JPH0632178B2 - Electronic still camera recording device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device for an electronic still camera that records video signals and the like on a magnetic sheet.

2. Description of the Related Art In many floppy devices, when the cassette is taken out, the cassette is automatically sent out to the position where it is easy to take out by hand, and the structure is relatively simple.
Even in recording devices for electronic still cameras, which are in the utmost pursuit of downsizing and weight reduction, there are few devices that employ this cassette pushing mechanism.

Generally, the charged spring force is used when the cassette is inserted, and the cassette is pushed out when the cassette is taken out.

On the other hand, the head is configured to move in the radial direction in order to form a track on the magnetic sheet. In this moving method as well, in pursuit of miniaturization and weight reduction, a head is used without using a stepping motor or the like. It is considered that the moving direction of the head is limited and the head is moved by utilizing the biasing force mechanically charged in one direction. In this case, of course, it is essential that the head be moved to its initial position each time the cassette is changed.

Problems to be Solved by the Invention That is, as described above, in pursuit of reduction in size and weight,
A mechanism for returning the head to its initial position must also be provided. In addition, for ease of use, I would like to incorporate the cassette pushing mechanism described above. This mechanism is often located in the compartment that holds the cassette, the major part of which is the cassette. Therefore, there are many problems such as the weight of the compartment itself becomes large. Therefore, there is a need for a device that solves these problems all at once.

Means for Solving the Problems The present invention has been made in view of such problems, and a head is slidably contacted with a rotating magnetic sheet in a cassette, and the head is moved in a radial direction of the magnetic sheet. A recording device of an electronic still camera that performs recording so as to form a track, a compartment that stores the cassette, and a cassette pushing member that pushes the cassette out of the compartment when the cassette is discharged to the outside of the device, A cam follower that moves the head to an initial position by opening the lid and a cam that moves the cam follower are provided, and the compartment rotates in a state of being axially supported by a rotation shaft provided in the main body of the apparatus, Move between the position for inserting and ejecting the cassette and the position for recording and insert the cassette When the cassette is ejected, the cam rotates mechanically in conjunction with the cassette pushing member, the cam rotates, and the cam follower moves. The head is moved to an initial position by the recording medium, and at the same time, the cassette pushing member abuts against the cassette to eject the cassette to the outside of the compartment.

Operation The present invention has the above-described configuration, which greatly improves the usability of the cassette pushing mechanism from the compartment, and the two operating mechanisms of returning the head to the initial position, which can be one factor in pursuing reduction in size and weight. Since it can be performed by the same means, an efficient device can be obtained. This return of the head to the initial position is performed every time the cassette is replaced, and of course there is no problem in use.

Embodiment Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

1A and 1B are block diagrams of a recording apparatus according to the present invention.
The cassette 1 has a shutter 2 that blocks a head insertion port (described later), and the shutter 2 can move in the direction of arrow 3. Therefore, by sliding the cassette 1 in the direction of the arrow 4 and inserting it into the compartment 5, the shutter opening / closing mechanism 6 opens the shutter 2. When the cassette 1 is ejected from the compartment 5, the shutter opening / closing mechanism 6 automatically closes the shutter 2. The compartment 5 includes a plurality of guide pieces 7a to 7f on the side where the cassette 1 is inserted,
It is easy to insert. The garage 8 is arranged outside the compartment 5, and both are rotatably supported by the support shafts 10 a and 10 b on the base plate 9. The axial support direction is the insertion direction of the cassette 1, that is, the direction of arrow 4. Therefore, when inserting the cassette 1, the cassette 1 is slid with respect to the base plate 9. However, the sliding direction is parallel to the base plate 9, and there is no problem in interlocking with the slide plate A11. The slide plate B12 is on the slide plate A11, and both slide on the base plate 9 in the cassette insertion direction to move the head 13 and eject the cassette 1. The two plates are attracted to each other by a spring 14. The bent portion 11a of the slide plate A11 engages with the cassette 1, and the arrow 1
Move in 5 directions, charge the slider 16,
The head 13 is moved by the operation of a two-stage structure claw (described later) by suction of the solenoid 17. When the garage 8 is opened (the state is as shown in the figure, but the figure is wider than it is for the sake of illustration), the opening spring 18 moves the hook plate 19 by engaging with the protrusion 19a thereof. , The hook portion 11b of the slide plate A11 is disengaged, and the slide plate A11 advances in the direction opposite to the arrow 15 by the force of a spring (described later) charged by the insertion of the cassette 1.
By this movement, the bent portion 11a ejects the cassette 1 out of the compartment 5. Also slide plate A11
By simultaneously pushing the slide plate B12, the movement is transmitted to the ratchet 23 via the rack portion 12a of the slide plate B12 and the gears 21 and 22 provided on the gear plate 20, and the cam 63 (provided integrally) is provided. The cam follower 24 abutting against (see FIG. 3) is moved in the direction of arrow 73 (see FIG. 3) to bring the head 13 to the initial position. The slider 16 includes a slide shaft 27a held by a slide block 25 and holding springs 26a to 26c (26d is described later) and an adjusting screw (described later),
It moves along 27b and is spring-biased toward the cam.

The garage 8 always tries to open because the spring 28 is hooked on the spring hook 29 of the base plate 9 and the spring hook 30 of the garage, and the spring 31 biases the compartment 5 away from the garage 8. There is. Now insert cassette 1 into compartment 5,
When the garage 8 is closed, first the compartment 5 descends until it abuts the height determining pin 32, and the positioning holes 33a and 33b of the cassette 1 are aligned with the positioning pins 34a and 3b.
4b is fitted and positioned, and the height is determined by the two pins and the height determining pin 35. During this time, the switch 37 that engages with the erroneous erasure prevention claw 36 of the cassette 1 is pushed by the protrusion 38 of the garage 8 to a position where it does not engage with the cassette 1. After that, the garage 8 descends, and the presser springs 39 and the like hold the cassette 1,
The insertion spring 40 pushes a center core (described later) into the spindle 42 of the motor 41. Further, the pad plate 44 held in the garage 8 by the pad spring 43 is provided with a pulse generator (hereinafter referred to as PG) 45 and a pad 46, which are also pad height determining pins 47.
The a and 47b come into contact with the pad 46, and the height adjusting screw 48 comes into contact with the central portion (described later) of the spindle 42 for positioning. After completion of these operations, the lock hole 49 of the garage 8 engages with the lock 50 to fix the garage 8. To release, the pressing portion 50a is pushed against the spring 51 so that the lock 50 is disengaged.

In this way, the cassette 1 is fixed on the base plate 9 and recording is performed by the head 13. The operation of each part will be described in more detail with reference to the drawings.

FIG. 2 is an explanatory view of the cassette 1 used. The built-in magnetic sheet 52 is attached to the center core 53. The center core 53 has positioning walls 54a, 54
b, a positioning spring 55 and a PG yoke 56 are provided and positioned with respect to the spindle 42. In the case 57,
As described above, the positioning holes 33a and 33b are provided, and the positioning pins 34a and 34b and the height determining pin 35 are used for positioning. Reference numeral 58 denotes a housing 57 for exposing the magnetic sheet 52 after the shutter 2 slides in the direction of arrow 3 and 2 '.
The windows are provided in the same shape on both sides of the pad, and the pad height determining pins 47a and 47b also use the inside of the window 58. Reference numeral 59 is a label that allows the user to write down the date of use and organize it. The erroneous erasure prevention claw 36 is provided on the back side and is used to erroneously erase recorded contents or prevent overwriting.

FIG. 3 shows the structure on the base plate 9. Fourth
FIG. 7 to FIG. 7 are explanatory diagrams of each constituent element, which will be described with reference to the above drawings. 4 is a view from the X direction of FIG. 3, FIG. 5 is from the Y direction, and FIGS. 7A and 7B are from the Z direction.
The slide plate A11 moves in the direction of arrow 15 against the spring 60 by the cassette 1 and is held by the hook plate 19 in a charged state (FIG. 11 '). When the garage 8 descends, the hook plate 19 does not move because the open spring 18 bends, but when it rises, the hook plate 19 moves against the spring 61 due to its shape and disengages from the hook portion 11b, and the arrow 15 And move in the opposite direction. The slide plate B12 is attracted to the slide plate A11 by the spring 14, and finally comes into contact with the slide plate A11 to lose its spring force and move integrally with the force of the spring 60. This movement rotates the gear 62 integrally provided with the ratchet 23 through the rack portion 12a and the gears 21 and 22 as described above, and also rotates the cam 63. FIG. 6A shows the state at this time, and the pointer 64 is engaged with the ratchet 23, but since the ratchet 23 rotates in the direction of the arrow 66 with respect to the shaft 65, it moves like 64 '. Can be rotated. 67 is a counter lever, and the shaft 6
8 is shared with the pointer 64, and the end portion 67a thereof is connected to the spring 69.
The end portion 67b is abutted against the stopper portion 70 of the base plate 9. The counter lever 67 is configured to sandwich the pointer 64 from above and below, and is provided with a spring 71.
Energize. The protrusion 64a of the pointer 64 has an end 67a because the claw 64b is in contact with the ratchet 23 and is stopped.
There is a gap d between the and. Since these spring forces are small, the load of moving the slide plate A11 is not so great. That is, the head 13 can be easily moved to the initial position without requiring a mechanism for separating the claw portion 64a from the ratchet 23. As described above, the rotation of the cam 63 depends on the cam follower 24.
Is pushed up, a kinetic force in the direction of arrow 73 is given to the slider 16 via the adjusting plate 72, and the head 13 is moved. The head 13 is screwed to the slider 16. Spring 6
The movement of the slide plate A11 that moves with a force of 0 is stopped at a predetermined position by the stopper 74 and the state is maintained. That is, each time the garage 8 is opened, the cassette 1 is ejected, the head 13 is moved to the initial position and reset. For this reason, it is not necessary to return the head 13 to the initial position when the cassette 1 is replaced, and the mechanism is simplified and power consumption is saved.

Now, when a new cassette 1 is inserted in this state, the fourth
As shown in the figure, the insertion direction becomes parallel to the base plate 9, and the slide plate A11 moves in the arrow direction to reach 11 'and stop. However, the slide plate B12 cannot move because the pointer 64 and the ratchet 23 are engaged with each other as shown in FIG. 6A, the spring 14 is stretched, and the slide plate A1 is attached to the slide plate B12.
A biasing force is applied in one direction, that is, in the direction of arrow 15.
As described above, this force exists until the garage 8 is opened and the slide plates A11 and B12 come into contact with each other,
In FIG. 6B, the force is in the direction of arrow 75. Therefore, the ratchet 23 becomes stable in the state shown in FIG. 6A. Further, the slider 16 is also stable because it is in contact with the cam 63 by the spring 95, and the position of the head 13 is determined. This charging force resists the springs 14 and 60, but the spring 1
4 can rotate the ratchet 23 against the contact frictional force between the cam 63 and the cam follower 24 by the spring 95, and the spring 60 causes the frictional force between the pointer 64 and the ratchet and the cam follower 24 as before. It is necessary to have a force capable of moving the slide plate A11 while pushing up and ejecting the cassette 1. Therefore, although a little large force is applied, since it is performed by the insertion operation of the cassette 1, that is, the operation by the human hand, or the force obtained from the mechanism outside the device, it does not burden the device at all.
The simplification and miniaturization are not obstructed. Moreover,
The spring 14 only applies a force to draw the two plates, and the size thereof does not affect the spring 60. That is, the charging force is not increased unnecessarily, and the discomfort to the hand when the cassette is inserted and the burden on other mechanisms are small. Further, by making the axial support direction of the garage 8 and the compartment 5 the same as the sliding direction of the cassette 1, this cassette insertion force can be easily used for the sliding force on the base plate 9, and no conversion mechanism is required. Further, by organically connecting the movement and positioning operation of the head 13 and the cassette insertion / ejection operation, an extremely efficient and simple mechanism is realized.

Under these circumstances, the solenoid 17 is energized.
As shown in FIG. 6B, the solenoid shaft 76 is sucked,
Move in the direction of arrow 77. Therefore, the counter lever 67 is rotated counterclockwise against the spring 69 via the pin 78. The end portion 67a comes into contact with the protrusion 64a of the pointer 64, and similarly rotates the pointer 64. At this time, the claw 67b of the counter lever 67 moves to a position where it engages with the ratchet 23, and then the claw 64b of the pointer 64
Separate from the ratchet. Since the ratchet 23 has the urging force in the direction of the arrow 75 as described above, it rotates until it comes into contact with the pawl portion 67b. This rotation amount is set so that the claw portion 64b crosses the ratchet 23 by one mountain. After that,
The energization of the solenoid 17 is cut off, and the spring 69 returns the state of FIG. 6A again. At this time, the ratchet 23 has advanced one mountain, and the cam 63 causes the slider 16 to move.
Moves. In this way, the head 13 is connected to the solenoid 1
Move one track at a time to energize 7. The attraction force of the solenoid 17 only needs to resist the frictional force between the ratchet 23 and the pointer 64 due to the biasing force of the spring 69 and the direction of the arrow 75, and an extremely small force is required. Be useful. Moreover, the circuit configuration is simple because it is sufficient to turn on and off the power.
The movement of the head 13 is carried out in the direction opposite to the arrow 73 in FIG. 3 and moves to 13 '. Further, since the pointer 64 and the counter lever 67 have a two-stage structure, the head 1
When positioning 3, the ratchet 23, a gap d is provided between the counter lever 67 and the pointer 64 so that the counter lever 67 is not affected and its accuracy can be maintained. When the head 13 is returned to the initial position, the pointer 64 is independently moved without moving the counter lever 67 to disengage the ratchet 23 and move the head 13 to the initial position. When sending the, it is moved integrally with the counter lever 67 to prevent the mechanism from becoming complicated.

The head 13 is fixed to the slider 16, and the two slide shafts 27a and 27b, which are guide members of the slider 16, are constructed as shown in FIG. 7B. The slide shaft 27a is inserted into the engagement hole 16a of the slider 16. 79 is a bush. The slide shaft 27b is fitted in the engagement groove 16b, and the slide shaft 27a determines up and down and left and right with 27b. Therefore, as shown in the figure, the slide shaft 27a is held by the two adjusting screws 80 and 81 and the pressing spring 26b with respect to the slide block 25, and its vertical and horizontal positions can be adjusted. (Although not shown, the other end has the same structure.)
The slide shaft 27b is held by an adjusting screw 82 and a pressing spring 26c, and its vertical position can be adjusted. (The other end has the same structure). In this way, the position of the head 13 can be completely adjusted over the entire stroke, such as delicate up / down, left / right, and inclination with respect to the motor 41, which is very effective in contact with the magnetic sheet 52 and maintaining track accuracy. Further, the positional relationship between the cam 63 and the slider 16 can be adjusted by the adjusting plate 72, and the position of the head 13 can obtain sufficiently high performance without requiring high precision other than the cam 63 and the ratchet 23. it can.

On the other hand, the structure of the garage 8 and the like will be described with reference to FIGS. 8A, 8B and 9. These are the views seen from the Y direction in FIG.

In FIG. 8, A is an open state and B is a state in which the cassette 1 is set on the motor 41. As seen in Figure 5,
Two positioning pins 34a for positioning the cassette 1,
34b is far from the rotation axis of the garage 8 and the compartment 5 connecting the support shafts 10a and 10b, and it is the motor 41 that affects the attachment and detachment of the cassette 1.
And the pad 46 and the like.

As shown in FIG. 8A, in this embodiment, these members are also used in the garage 8.
Pad 4 coming into the window 58 of cassette 1 in the axial direction of
Depending on how to select the position with respect to 6, the cassette 1 is constructed so that it can be escaped with the opening angle being the smallest when using this cassette 1. That is, the opening angle of the cassette 1 is minimized in the detached state to prevent invasion of dust and the like and contact with the inside by fingers and the like. The opening angle of the garage 8 is the support shaft 10b.
The angle of opening of the compartment 5 with respect to the garage 8 is determined by the contact with the member having the. Now, from FIG. 8A to FIG. 8B
In the movement to the
Are located above the compartment 5 so that they can be attached and detached. If you lower the garage 8 as it is, the garage 8
The cassette 1 is set on the motor 41 while the relative angle between the compartment 1 and the compartment 5 is held by the spring 31. The center core 53 is inserted into the spindle 42, but at that time, it is considered that there is some resistance and the insertion is incomplete. After the compartment 5 has stopped, only the garage 8 continues to descend, and the insertion spring 40 presses the center core 53 to securely push it into the spindle 42. Further, when the garage 8 is rotated downward, the upper protruding piece 84 of the compartment 5 and the insertion spring 40 come into contact with each other. For this reason, the tip 40a is separated upward from the center core 53 and does not become a load for rotating the center core 53 as shown in FIG. 8B. As described above, the insertion spring 40 provided in the garage 8 has a simple structure of one leaf spring, but the spindle 42 of the center core 53 has a simple structure.
It is valuable because it can be surely inserted into and then separated.

Similarly, the PG 45 and the pad 46 arranged on the pad plate 44 which is biased and held by the pad spring 43 provided on the garage 8 are also precisely adjusted by the pad height determining pins 47a as shown in the figure. Is determined.

FIG. 9 shows a state in which the position of the pad plate 44 has been determined. The pad 46 has two pad height determining pins 47.
The height is determined by contacting a and 47b. Pad plate 4
4, a height adjusting screw 48 is provided at a position corresponding to the central portion 85 of the motor 41 while being urged by a spring 86 to absorb backlash. With the height adjusting screw 48 as the last one, the pad plate 44, that is, the pad 46 and the PG
The height of 45 is accurately determined. The plane position is already determined by the pad spring 43.

As a result, the contact between the head 13 and the magnetic sheet 52 and P
The relationship between the G pin 87 and the PG yoke 56 is surely guaranteed, and the recording performance can be made sufficient. The PG yoke 56 is provided integrally with a magnetic plate 89 to which the magnetic sheet 52 is attached and which is in contact with the pedestal portion 88 of the motor 41. The magnetic plate 89 is attracted to perform positioning and transmission of rotational driving force. P of the magnetic force of the magnet 90
Tell G pin 87. This is detected by the coil 91, and PG
It is output.

Finally, the movement of the switch 37 will be described with reference to FIGS.

As described above, when the cassette 1 is attached or detached, all the parts that prevent it are retracted out of the path. However, the erroneous recording prevention pawl 36 is located near the axis of the garage 8, and the switch 3
Since 7 is also in the vicinity, it is necessary to move from the normal detectable position. This is seen in Figure 10A. So B
As described above, when the garage 8 is opened, the projection 38 of the garage 8 moves against the spring 93 which biases the switch plate 92 provided with the switch 37, and slides the cassette 1 in the direction of arrow 15 or in the opposite direction. Configure it so that it does not interfere with. The switch plate 92 is axially supported by a shaft 94 on a side wall portion (not shown) of the base plate 9 and abuts on the base plate 9 to be fixed in position. Then, as described above, it is moved from this state so as not to disturb the slide of the cassette 1. For this reason, it is not necessary to consider the switch 37 in determining the axial support direction of the garage 8, so that the degree of freedom in design is increased, and other advantages can be effectively used.

Effects of the Invention As described above, according to the recording apparatus for an electronic still camera of the present invention, the cassette insertion / ejection direction and the axial direction of the rotation axis of the compartment are configured to coincide with each other, and the cassette is ejected. The cam rotates and the cam follower moves to move the head to the initial position, and at the same time, mechanically interlocks with the cam to move the cassette pushing member to eject the cassette to the outside of the compartment. Therefore, the configuration of the entire apparatus is simplified, the number of parts is small, and the size and weight can be reduced. In addition, since electric power is not used to move the head to the initial position, it can greatly contribute to power saving.

[Brief description of drawings]

1A and 1B are configuration diagrams of a recording apparatus according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of a cassette used in the apparatus, FIG. 3 is an explanatory diagram of main parts of the apparatus, and FIG. Is an explanatory view of a main part viewed from the X direction in FIG. 3, FIG. 5 is an explanatory view of a main part similarly viewed from the Y direction, and FIGS. 6A and 6B are explanatory views of a main part of the apparatus, FIG. B is an explanatory view of the main parts seen from the Z direction in FIG. 3, FIGS. 8A and 8B are explanatory views of the main parts also seen from the Y direction, and FIGS. 10A and 10B are views of the apparatus. FIG. 1 ... Cassette, 5 ... Compartment, 8 ... Garage, 11 ... Slide plate A, 11a ... Bent portion, 12 ... Slide plate B, 13 ... Head, 1
4 ... Spring, 19 ... Hook plate, 52 ... Magnetic sheet,
60 ... Spring.

Claims (2)

[Claims] 1. A recording apparatus for an electronic still camera, wherein a head is slidably contacted with a rotating magnetic sheet in a cassette, and the head is moved in a radial direction of the magnetic sheet to perform recording so as to form a track. A compartment for accommodating the cassette, a cassette pushing member that pushes the cassette out of the compartment when the cassette is discharged from the apparatus, a cam follower that moves the head to an initial position by opening a lid, A cam for moving a cam follower is provided, and the compartment rotates while being supported by a rotation shaft provided in the apparatus main body, and moves between a position for inserting and ejecting the cassette and a position for recording. At the same time, the cassette is inserted and discharged in the same direction as the axial direction of the rotary shaft. When ejecting a cassette, the cam rotates mechanically in conjunction with the cassette pushing member, the cam follower moves to move the head to an initial position, and at the same time, the cassette pushing member moves to the cassette. A recording apparatus for an electronic still camera, which abuts and ejects the cassette to the outside of the compartment. 2. A rack portion for transmitting power to the cassette pushing member, and a first gear engaged with the rack portion for transmitting power, in a portion where the cassette pushing member and the cam follower are mechanically interlocked. A second gear engaged with the first gear to transmit power, a ratchet arranged coaxially with the second gear and rotating in synchronization with the second gear, and a rotation shaft of the ratchet A cam for moving the cam follower, a counter lever for rotating the ratchet by a certain amount, a pointer for stably keeping the ratchet stationary, and a first spring for applying a biasing force to a state of always attracting the counter lever. , A second for applying a biasing force to the ratchet in the direction of returning the head to the initial position
And a third spring that applies a biasing force to the cam follower in the direction of ejecting the head at the time of recording, and at the time of recording, the ratchet is operated by the cooperation of the counter lever and the pointer by the biasing force of the third spring. 2. The head is moved by moving a fixed amount and when the cassette is ejected, the fixation of the pointer is released and the head is returned to the initial position. Recording device for electronic still camera.