JPS62107478A - Recording device for electronic still camera - Google Patents

Abstract

PURPOSE:To obtain the charge of a spring necessary to a head shifting mechanism and to improve usability by inserting a cassette into a compartment and executing the spring charge of the head. CONSTITUTION:When the cassette 1 is inserted into the compartment 5 and a garage 8 is closed, the compartment 5 falls and the cassette 1 is positioned by positioning holes 33a and 33b. Thereafter, the garage 8 falls, a pressure bar spring 39, etc., hold the cassette 1 and an inserting spring 40 pushes the center core into the spindle of the motor. The parts on a pad plate 44 held at the garage 8 by a pad spring 43 are positioned by a height adjusting screw 48. After these actions are completed, the garage 8 is fixed by a locking hole 49. Thus, the cassette 1 is fixed onto the base plate and recording is executed by the head.

Description

DETAILED DESCRIPTION OF THE INVENTION 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.

Conventional technology The method of moving the head of a recording device that moves the head to form tracks on a magnetic sheet is to convert the rotational motion of a general stepping motor into linear motion using a steel belt, feed screw, or cam. . However, in devices such as electronic stealth cameras that aim to be small and lightweight above all else, the thickness of the stepping motor and its drive circuit becomes a problem, so the focus is on miniaturization and simplification, and the mechanical system is designed to limit the direction of movement of the head during recording. It is considered that the head can be moved using a biasing force that is charged in one direction.

Problems to be Solved by the Invention This can be achieved by using a ratchet mechanism, for example, and moving the ratchet by -pitch for each pulse of the solenoid, but in that case, how can the above-mentioned biasing force be obtained? , that becomes a problem. Sometimes a method is used in which the head is arranged so that a biasing force is always applied, a solenoid is used to move the head against this biasing force, and the head is reset by opening the cassette loading mechanism. The power of the solenoid inevitably increases. Therefore, as mentioned above, there is a need for a mechanical charging method that is easy to use, efficient, and highly desirable.The present invention has been made in view of these problems. This is a recording device for an electronic still camera that records by sliding a head on a rotating magnetic sheet in a cassette and moving the head in the radial direction of the magnetic sheet to form tracks. A first spring is provided to bias the head in the direction and move the head by this biasing force.
This is a recording device for an electronic still camera configured to charge a spring by inserting a cassette into a converter that holds the cassette.

Function The present invention has the above-mentioned configuration, and the indispensable operation of inserting the cassette into the converter has a relatively large stroke, and the spring charging of the head is performed by the movement performed using force outside the device. As a result, the spring required for the head moving mechanism can be charged without causing discomfort and without placing any burden on the device. That is, by installing the cassette to be used in the apparatus, the urging force necessary for head movement while the cassette is in use is obtained.

When using a new cassette, the cassette must be replaced, so there is no problem in use.

EXAMPLE Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIGS. 1A and 1B are block diagrams of a recording apparatus according to the present invention.

The cassette 1 closes a head insertion opening (described later) with a shutter 2, and the shutter 2 is movable in the direction of an arrow 3. Therefore, by sliding the cassette 1 in the direction of the arrow 4 and inserting it into the compartment 5, the shutter 2 is opened by the shutter opening/closing mechanism 6. When the cassette 1 is ejected from the compartment 5, the shutter opening/closing mechanism 6 automatically opens the shutter 2.
is closed. The compartment 5 is provided with a plurality of guide pieces 7a to 7f on the side into which the cassette 1 is inserted.
Easy to insert. The garage 8 is arranged outside the compartment 5, and both are pivotally supported by support shafts 1oa and 1ob on the base plate 9. This pivot direction is directed toward the insertion direction of the cassette 1, that is, the direction of the arrow 4. Therefore, when inserting the cassette 1, it must be slid with respect to the base plate 9 in an inclined state. However, the sliding direction is parallel to the base plate 9, so there is no problem in interlocking with the sliding plate A11. The slide plate B12 is located on the slide brake A11, and both slide on the base plate 9 in the cassette insertion direction to move the head 13, eject the cassette 1, etc. These two plates are pulled together by a spring 14. The bent portion 11a of the slide plate A11 engages with the cassette 1, and when inserted, the bent portion 11a of the slide plate A11 is aligned with the arrow 1.
Move in 5 directions, charge the slider 16,
The head 13 is moved by actuation of a two-stage pawl (described later) by suction from the solenoid 17. Garage 8 is open (
When the opening spring 18 is opened, the hook plate 1 is opened.
9 is engaged with the protrusion 19a and moved, and the hook portion 11b of the slide plate A11 is disengaged, and the slide plate A11 moves along the arrow 15 due to the force of a spring (described later) charged when the cassette 1 is inserted. Go in the opposite direction. Due to this movement, the bending portion 11a ejects the cassette 1 out of the compartment 5.

Moreover, by simultaneously pushing the slide plate B12, the slide plate A11
The movement is transmitted to the ratchet 23 through the gears 21 and 22 provided on the gear plate 2o of the rack portion 12a1 of 12, and the slider 16 is moved by pushing up the cam follower 24 that comes into contact with an integrally provided cam (described later). and bring the head 13 to the initial position. The slider 16 is attached to the slide block 25 by pressing springs 26a to 26c (26d
(described later) and adjustment screws (described later), and are moved along slide shafts 27a and 27b held by adjustment screws (described later), and are biased by a spring toward the cam.

The garage 8 always tries to open because the spring 28 is applied to the spring catch part 29 of the base plate 9 and the spring catch part 30 of the garage, and the spring 31 urges the compartment 5 away from the garage 8. are doing. Now, when the cassette 1 is inserted into the compartment 5 and the garage 8 is closed, the compartment 5 first descends until it comes into contact with the height setting bin 32, and the cassette 1 has its positioning holes 33a, 33b aligned with the positioning bin 34a.

34b and is positioned, and the height is also determined by the two bins and the height determining bin 36.

During this time, the switch 37 that engages with the accidental erasure prevention claw 36 of the cassette 1 is moved by the protrusion 38 of the garage 8 so that the cassette 1
It has been pushed to a position where it does not engage.

After that, as the garage 8 descends, the presser spring 3
9 hold the cassette 1, and the insertion spring 40 holds the motor 41.
Push the center core (described later) into the spindle 42 of.

Further, a pad plate 44 held in the garage 8 by a pad spring 43 has a pulse generator (hereinafter referred to as PG).
) 46 and a pad 46, these also have pad height determining bins 47a and 47b that are connected to the pad 46.
Further, the height adjustment screw 48 is positioned by coming into contact with the center portion (described later) of the spindle 42. After these operations are completed, the lock hole 49 of the garage 8 engages with the lock 5o to fix the garage 8.

To release the lock 5o, push the pressing portion 60a against the spring 51 to release the lock 5o.

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 explained in more detail with reference to the drawings.

FIG. 2 is an explanatory diagram of the cassette 1 used.

The built-in magnetic sheet 52 is attached to the center core 63. This center core 53 has a positioning wall 54a.
, s4b, a positioning spring 65, and a PG yoke 56 are provided, and are positioned with respect to the spindle 42. Housing 5
7, as described above (33a.

There is a positioning hole 33b and a positioning bin 34a.

34b1 is positioned by the height determining bin 35.

68 is after the shutter 2 slides in the direction of the arrow 3.
' is a window provided in the same shape on both sides of the housing 57 to expose the magnetic sheet 52, and the pad height determining bin 4
7a and 47b also use the inside of this window 68. 59 is a label that allows you to write down the month and date of use and organize the items. 36 accidental erasure prevention claws are provided on the back side,
It is used to prevent recorded contents from being accidentally erased or overwritten.

FIG. 3 shows the configuration on the base plate 9. Fourth
7 to 7 are explanatory diagrams of each component, and the explanation will be given using the above drawings. 4 is a view seen from the X direction of FIG. 3, FIG. 5 is a view from the Y direction, and FIGS. 7A and B are views from the Z direction.

The slide plate A11 is attached to the spring 6o by the cassette 1.
It moves in the direction of arrow 15 against the force and is held in a charged state (FIG. 4, 11') by the hook plate. When the garage 8 descends, the hook plate 19 does not move because the opening spring 18 bends, but when the garage 8 descends, the hook plate 19 moves against the spring 61 due to its shape and disengages from the hook portion 11b. Move in the opposite direction to arrow 15.

The slide plate B12 and the slide plate A11 are attracted to each other by the spring 14, and eventually the slide plate A11 and the slide plate A11 come into contact with each other, the spring force is lost, and the slide plates A12 and B12 move together by the force of the spring 6o. This movement rotates the gear 62 provided integrally with the ratchet 23 via the gears 21 and 22 of the rack portion 12a1, 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 arrow 66 with respect to the shaft 65, it moves as shown in 641, and the ratchet 23 rotation is possible. 67 is a counter lever, which shares the shaft 68 with the pointer 64;
The end portion 67a is pulled and biased clockwise by a spring 69, and the other end portion 67b is in contact with the stopper portion 7o of the base plate 9. This counter lever 67 is configured to sandwich the pointer e4 from above and below, and is equipped with a spring 71 to bias the pointer 64. pointer 64
Since the claw e4b of the protrusion 64a stops in contact with the ratchet za, a gap d is created between the protrusion 64a and the end 67a. Since these spring forces are small, they do not put much load on the movement of the slide plate A11. In other words, it is possible to easily move the head 13 to the initial position without requiring any particular mechanism for separating the claw portion 64a from the ratchet 23. As described above, the rotation of the cam 63 pushes up the cam follower 24 and applies a motion force in the direction of the arrow 73 to the slider 16 via the adjustment plate 72, thereby moving the head 13. The head 13 is screwed onto the slide 16. The movement of the slide plate A11, which is moved by the force of the spring 60, is stopped at a predetermined position by a stopper 74, and this state is maintained. That is, each time the garage 8 is opened, the cassette 1 is ejected and the head 13 is
is moved to its initial position and reset. Therefore, it is not necessary to return the head 13 to the initial position when replacing the cassette 1, etc., and the mechanism is simplified and power is saved.

Now, if you insert a new cassette 1 in this state, the 4th cassette
As shown in the figure, the insertion direction is parallel to the base plate 9, and the slide plate A11 moves in the direction of the arrow until it reaches 11' and stops.

However, the slide plate B12 cannot be moved because the pointer 64 and ratchet 23 are engaged as shown in FIG. 6A, and the spring 14 is stretched, causing the slide plate B12 to move.
An urging force is applied in the direction of the slide plate A11, that is, in the direction of the arrow 15.

As mentioned 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 is stabilized in the state shown in FIG. 6A. Further, since the slider 16 is also in contact with the cam 63 by the spring 96, it is stabilized and the position of the head 13 is determined. This chaska resists the springs 14 and 60, and the spring 14 can rotate the ratchet 23 against the contact friction force between the cam 63 and the cam follower 24 due to the spring 96, and the spring 60 Using the frictional force between the pointer 64 and the ratchet and pushing up the cam follower 24 as before,
A force is required that allows the slide plate A11 to move while ejecting the cassette 1.

Therefore, although a somewhat large force is required, it is not a burden on this device at all, since it is performed by the insertion operation of the cassette 1, that is, by a human hand, or by a force obtained from a mechanism outside the device, and it can be simplified and It does not hinder downsizing. Furthermore, the spring 14 only applies a force that attracts the two plates, and its size does not affect the spring 6o. In other words, there is no unnecessary strain on the Charsica, there is less discomfort on the hand when inserting the cassette, and there is less burden on other machines. Also, garage 8
By making the axis support direction of the compartment 6 the same as the sliding direction of the cassette 1, this cassette insertion force can be easily used as a sliding force on the pace plate 9, and no conversion mechanism is required. In addition, the head 13
By organically linking the movement and positioning operations of the cassette and the cassette insertion and ejection operations, an extremely efficient and simple mechanism has been 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. In this case, the counter lever 67 is rotated counterclockwise through the pin 78 against the screw 69. The end portion 67a contacts the protrusion 64a of the pointer 64, and similarly rotates the pointer 64. At this time, the claw portion e7b of the counter lever 67 moves to a position where it engages with the ratchet 23, and then the claw portion s4b of the pointer 64 moves to a position where it engages with the ratchet 23.
is separated from the ratchet. Since the ratchet 23 is biased in the direction of the arrow 76 as described above, it rotates until it comes into contact with the claw portion 67b. The amount of rotation is set such that the pawl e4b exceeds the ratchet 23 by one peak. After that, the solenoid.

Cut off the power to 17, and turn it back on to Fig. 6A by
to return to the state of At this time, the ratchet 23 has advanced one step, and the cam 63 moves the slider 1θ. In this way, the head 13 is moved one trunk each time the solenoid 17 is energized. The suction force of the solenoid 17 is only required to resist the frictional force between the ratchet 23 and the pointer 64 due to the biasing force in the direction of the arrow 69 and the arrow 75, and the force is extremely small, thus making the solenoid 17 more compact and power saving. Helpful for thick. In addition, the circuit configuration is simplified because the current only needs to be turned on and off.

This movement of the head 13 is performed in the direction opposite to the arrow 73 in FIG. 3, and moves up to 13'.

However, since the pointer 64 and Calantare/<-67 are configured in two stages, when positioning the head 13, that is, positioning the ratchet 23, a gap d is provided between the counter lever 67 and the pointer 64, and the counter lever 6
7 can be prevented from having any influence and the accuracy can be maintained.

Also, when returning the head 13 to the initial position, use the pointer 6.
4 is moved independently, and when the head 13 is sent, they are moved together to prevent the mechanism from becoming complicated.

The head 13 is fixed to the slider 16, and the two slide shafts 27a, 27, which are guide members of the slider 16, are constructed as shown in FIG. 7B. The slide shaft 2a is inserted into the retaining hole 16& of the slider 16. 79 is a bush. Further, the slide shaft 27b is fitted into the engagement groove 16b, and the slide shaft 27a determines the top, bottom, left and right, and the top and bottom are determined by the slide shaft 27b. Therefore, as shown in the figure, the slide shirt 27a is held against the slide block 2S by two adjustment screws 80 and 81 and a presser spring 26b, so that its vertical and horizontal positions can be adjusted (the other end is not shown). has a similar configuration.

). Further, the slide shaft 27b is held by an adjustment screw 82 and a presser spring 26c, and its vertical position can be adjusted (the other end has the same configuration). In this way, the position of the head 13 can be completely adjusted over the entire stroke, such as slight up/down, left/right, tilt, etc. with respect to the motor 41.
This is very effective in maintaining contact with the magnetic sheet 62 and tracking accuracy. Further, the positional relationship between the cam 63 and the slider 16 can be adjusted by an adjustment plate 72, and the head 13
The position of cam 63 and ratchet 23 do not require high precision to obtain sufficiently high performance.

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

In FIG. 8, A is an open state, and B is a state where the cassette 1 is attached to the motor 41. As seen in Figure 5,
Two positioning pins 34a for positioning the cassette 1
, 34b are located far from the rotation axis of the garage 8 and the connector 6, which connect the support shafts 10a and 10b, and it is the motor 41 and pad 46 that affect the attachment and detachment of the cassette 1. Figure 8A
In this embodiment, these members also come in the axial direction of the garage 8 and into the window 68 of the cassette 1.) By selecting the position relative to the rad 46, it is possible to use the cassette y1. It is constructed so that it can escape with a small opening angle. That is, when the cassette 1 is attached or detached, its opening angle is minimized to prevent dirt from entering and contact with the inside by fingers or the like. Garage 8 opening angle is support shaft 1ob
The opening angle of the compartment 5 with respect to the garage 8 is determined by the protrusion 83 of the compartment 6. Now, in the movement from FIG. 8A to FIG. 8B, the insertion spring 40 is located above the compartment 6 at A so that the cassette 1 can be removed and removed. When the garage 8 is lowered in this state, the cassette 1 is set on the motor 41 while the relative angle between the garage 8 and the compartment 6 is maintained by the spring 31. Although the center core 63 is inserted into the spindle 42, there may be some resistance at that time, and the insertion may be incomplete. After the compartment 6 stops, only the garage 8 continues to descend, and the insertion spring 4o presses the center core 63 to ensure that it is pushed into the spindle 42. Further, when the garage 8 is rotated and lowered, the upper curved piece 84 of the compartment 6 comes into contact with the insertion spring 4o. Therefore, the tip 40a is separated upward from the center core 63, as shown in FIG. 8B, and does not become a load for rotating the center core 63. In this way, the insertion spring 40 provided in the garage 8 is the leaf spring 1
Although it has a simple configuration of just one sheet, it is valuable because it allows reliable insertion of the center core 63 into the spindle 42 and subsequent separation operation.

Similarly, the PGA 1 and the pad 46 arranged on the pad plate 44 which is biased and held toward the base plate 9 side by the pad spring 43 provided in the garage 8 are also as shown in the figure.
Its height is precisely determined by pad height determining bins 47a and the like.

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 bins 47
a, the height is determined by contacting 47b. The pad plate 44 is provided with a height adjustment screw 48 at a position corresponding to the center portion 85 of the motor 41, which is biased by a spring 86 and absorbs play. With this height adjustment screw 48 as the last one, the pad plate 44, that is, the pad 46 and the
The height of G 46 is determined accurately. Its planar position is already determined by the pad spring 43.

As a result, contact between the head 13 and the magnetic sheet 62 and PG
The relationship between the bin 87 and the PG yoke 56 is also reliably guaranteed, and the recording performance can be made sufficient. A magnetic sheet 62 is attached to the PG yoke 66, and the receiver of the motor 41 is provided integrally with a magnetic plate 89 that comes into contact with the base 88. This magnetic plate 89 is attracted to the magnetic plate 89 for positioning and rotational driving force. The magnetic force of the magnet 90 that performs the transmission is PG
Tell pin 87. This is detected by the coil 91 and outputted as a PG ratio.

Finally, the movement of the switch 37 will be explained using FIGS. 10A and 10B.

As mentioned above, all the parts that obstruct the attachment and detachment of the cassette 1 are evacuated out of the path. However, the erroneous recording prevention claw 36 is located near the axis of the garage 8, and the switch 3
7 is also nearby, so it is necessary to move from the normal inspection position. This can be seen in Figure 1A. So B
When the garage 8 is opened, the protrusion 38 of the garage 8 moves the switch plate 92 provided with the switch 37 against the biasing spring 93, causing the cassette 7 to slide in the direction of arrow 15 or the opposite direction. Configure it so that it does not interfere with The switch plate 92 is supported by a shaft 94 on a side wall portion (not shown) of the base plate 9, and is in contact with the base plate 9 to determine its position.

Then, as described above, it is moved from this state so as not to interfere with the sliding of the cassette 1. For this reason,
Since it is not necessary to take the switch 37 into account when determining the pivot direction of the garage 8, the degree of freedom in design increases and other advantages can be utilized, which is effective.

Effects of the Invention As is clear from the above explanation, in the electronic still camera recording device employing the present invention, the insertion operation into the compartment that is essential for mounting the cassette,
To charge the head, the required V force can also be obtained from outside the device, without putting any burden on the device.
The device is simple, small, lightweight, and extremely efficient.

[Brief explanation of drawings]

1A and 1B are block 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 the main parts of the apparatus, and FIG. is an explanatory diagram of the main part seen from the X direction of FIG. 3, FIG. 6 is an explanatory diagram of the main part similarly seen from the Y direction, and FIG. 6A. B is an explanatory diagram of the main part of the same device, FIGS. 7A and 7B are explanatory diagrams of the main part similarly seen from the Z direction of FIG. 3, and FIG. 8A is an explanatory diagram of the main part. B and Figure 9 are both explanatory diagrams of the main parts seen from the Y direction,
Figure 1o A and B are explanatory diagrams of the main parts of the device. 0 1... Cassette, 5... Compartment, 8... Garage, 11...・Slide plate A111a...Folded part, 12・River...Slide plate B. 13...Head, 14...Spring, 19
...Hook plate, 62...Magnetic sheet,
60... Spring. Name of agent: Patent attorney Toshio Nakao and 1 other person57
・-LaN Leroux fJ Z z3
・-Ratchet by 61 Data base plate 13- Head 41--Motor 42--Spindle 44-1-Buffed plate 5-pQ 46--Nozurad 53--1 Zenter core 5-PG yoke qo- --Magnet L? l-m-coil 7---cut 37°゛Sui Nochi Fig. 10

Claims (3)

[Claims] (1) A recording device for an electronic still camera that performs recording by sliding a head on a rotating magnetic sheet in a cassette and moving the head in the radial direction of the magnetic sheet to form tracks. biasing the head in the direction;
A first spring is provided to move the head by this biasing force, and the first spring is configured to be charged by inserting the cassette into a compartment that holds the cassette. An electronic still camera recording device. (2) the position where the cassette is inserted into the compartment;
2. The recording device for an electronic still camera according to claim 1, wherein the position of the cassette where the head records on the magnetic sheet is different from the position of the cassette. (3) A first charging member that engages with the cassette and moves in the insertion direction when inserting the cassette, and a head moving mechanism that is connected to the first charging member by a first spring. and a second charging member interlocking with the
When moving the head, the first charging member is fixed and only the second charging member is moved by the biasing force of the first spring, and after the head has finished moving, the first charging member is fixed. After the first and second charging members come into contact with each other and eliminate the biasing force of the first spring, both the first and second charging members move in a direction different from the direction in which the cassette is inserted. 3. The recording device for an electronic still camera according to claim 2, wherein the first charging member is provided with a second spring for returning the head to its initial position.