JPH0439145B2 - - Google Patents

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.

2. Description of the Related Art Devices using cassette-shaped recording media require a mechanism for mounting the cassette in a recording or reproducing state, and there are various mechanisms such as rotating type, link type, and front loading. There is a method. Of these, the rotary type is mechanically the simplest, and although it is easy to use, it is more complicated.
It has front loading and a link type in the middle. As the recording device of an electronic still camera, a rotary type is often used in pursuit of small size and light weight.

Problems to be Solved by the Invention The rotating cassette loading mechanism ultimately rotates the cassette around a certain axis to load it, but before doing so, the cassette must first be slid and inserted into the compartment. Must. Therefore, the final step requires ejecting the cassette from the compartment. There is no particular problem in doing this by hand, but in order to make it easier to use, a mechanism is often provided that automatically ejects the cassette to some extent when the cassette is separated from the device. In other words, even though it is rotatable and has a simple structure, it still requires the sliding action or mechanism described above, and these actions or mechanisms must be recognized as simply one element of installation. There is no such situation.

It goes without saying that if this operation or mechanism is organically linked with other elements (for example, head movement), the overall design of the device will be more efficient. However, the rotating cassette mounting mechanism
When the cassette is taken in and out of the compartment, it is tilted to the device, and since the cassette is slid along this tilted direction, the direction of movement at that time is a diagonal movement for the member on the mounting side. Difficult to relate. The main part of the ejection mechanism is also provided in the compartment, and this also moves at an angle. Furthermore, since the weight of the compartment itself increases, there are problems such as the need to increase the operating force.
Therefore, there is a need for an apparatus that effectively links the cassette sliding operation and ejection mechanism to the apparatus side.

Means for Solving the Problems The present invention has been made in view of the above problems, and has a garage that opens and closes by rotational movement, and a shaft coaxial with the garage, in which a cassette is attached in conjunction with the garage. The electronic still camera recording device is composed of a compartment in which a cassette is inserted or ejected by sliding it into the compartment, and the sliding direction coincides with the direction of the axis.

Effect The present invention is a rotary cassette mounting mechanism with the above-described configuration, but the sliding direction for inserting the cassette into the compartment and ejecting it to the outside is not oblique to the device but parallel to the device. become. That is, it becomes easy to organically link this operation with the members on the device side.

Embodiment Hereinafter, an embodiment 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) by 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 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. compartment 5
is provided with a plurality of guide pieces 7a to 7f on the side into which the cassette 1 is inserted, making insertion easier. The garage 8 is arranged outside the compartment 5 and both are pivotally supported on support shafts 10a, 10b on the base plate 9. This pivot direction is directed in the insertion direction of the cassette 1, that is, in 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, and there is no problem in interlocking with the slide plate A11.
Slide plate B12 is slide plate A1
Both slide on the base plate 9 in the cassette insertion direction to move the head 13 and eject the cassette 1. These two plates are pulled together by a spring 14. The bent portion 11a of the slide plate A11 engages with the cassette 1, moves in the direction of the arrow 15 during insertion, charges the slider 16, and operates the two-stage pawl (described later) by the suction of the solenoid 17. Therefore, the head 13 is moved. When the garage 8 is opened (as shown in the figure, the figure is opened wider than it actually is for explanation), the opening spring 18 engages with the protrusion 19a of the hook plate 19 and moves it. , the hook portion 11b of the slide plate A11 is disengaged, and the slide plate A11 moves in the direction opposite to the arrow 15 by the force of a spring (described later) charged when the cassette 1 is inserted. This movement causes the bending portion 11a to eject the cassette 1 out of the compartment 5. Also slide plate A11
By simultaneously pushing the slide plate B12, the latch portion 12a of the slide plate B12 and the gear 2 provided on the gear plate 20 are released.
1 and 22, the movement is transmitted to the ratchet 23, which pushes up a cam follower 24 that comes into contact with an integrally provided cam (described later), and moves the slider 16.
, and bring the head 13 to its initial position. The slider 16 is a slide shifter 27a, which is held on a slide block 25 by presser springs 26a to 26c (26d will be described later) and an adjustment screw (described later).
27b and is biased by a spring toward the cam.

The garage 8 always tries to open because the spring 28 is applied to 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, when the cassette 1 is inserted into the compartment 5 and the garage 8 is closed, the compartment 5 will first descend until it touches the height setting pin 32, and the cassette 1 will have its positioning holes 33a and 33b aligned with the positioning pin 34.
a and 34b for positioning, and the height is also determined by these two pins and the height determining pin 35. During this time, the switch 37, which engages with the accidental 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. Thereafter, as the garage 8 descends, the presser spring 39 and others hold the cassette 1, and the insertion spring 40 pushes a center core (described later) into the spindle 42 of the motor 41. In addition, a pad plate 44 held in the garage 8 by a pad spring 43 is equipped with a pulse generator (hereinafter referred to as PG) 45 and pads 46, and pad height determining pins 47a and 47b are attached to the pads 46. In addition, the height adjustment screw 48 abuts and is positioned at the center of the spindle 42 (described later). After these operations are completed, the lock hole 49 of the garage 8 engages with the lock 50 to secure the garage 8. To release the pressing part 50a, press the spring 51.
The lock 50 is disengaged by pushing against it.

In this way, attach the cassette 1 to the base plate 9.
The head 13 is fixed to the top and records are made using the head 13, and 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 5
It is attached to 3. This center core 53 includes positioning walls 54a, 54b, positioning springs 55,
A PG yoke 56 is provided and positioned relative to the spindle 42. As described above, the housing 57 has positioning holes 33a and 33b, and is positioned using the positioning pins 34a and 34b and the height determining pin 35. Reference numeral 58 denotes windows with the same shape provided on both sides of the housing 57 to expose the magnetic sheet 52 after the shutter 2 slides 2' in the direction of arrow 3. The pad height determining pins 47a and 47b also fit into this window. 58 is used. 59 is a label, which allows you to write the month and date of use and organize the items. 36 erroneous erasure prevention claws are provided on the back side and are used to prevent the recorded contents from being erroneously erased or overwritten.

FIG. 3 shows the configuration on the base plate 9. 4 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 moved by the cassette 1 in the direction of the arrow 15 against the spring 60, and is held in a charged state by the hook plate 19 (FIG. 4, 11'). When the garage 8 descends, the hook plate 19 does not move because the opening spring 18 bends, but when the garage 8 ascends, due to its shape, it moves against the spring 61 and disengages from the hook portion 11b. Slide plate A11 moves in the opposite direction to arrow 15. The slide plate B21 is pulled together with the slide plate A11 by the spring 14, and finally,
When they come into contact, the spring force is lost and they move together by the force of the spring 60. This movement rotates the gears 62 and 63, which are provided integrally with the ratchet 23 via the rack portion 12a and the gears 21 and 22, as described above. FIG. 6A shows the state at this time, in which 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 indicated by 64', and the ratchet 23 rotation is possible. A counter lever 67 shares a shaft 68 with the pointer 64, its end 67a is pulled and biased clockwise by a spring 69, and its other end 67b is attached to the base plate 9.
It is in contact with the stopper part 70 of. This counter lever 67 is configured to sandwich the pointer 64 from above and below, and is equipped with a spring 71.
energize 4. Since the claw portion 64b of the protrusion 64a of the pointer 64 is stopped in contact with the ratchet 23, a gap d is created between the protrusion 64a and the end portion 67a. Since these spring forces are small, they do not put much load on the movement of the slide plate A11. That is, especially when the claw portion 64a is
The head 13 can be easily moved to its initial position without requiring a mechanism for separating it from the head. As described above, the rotation of the cam 63 pushes 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 to the slider 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 that state is maintained. That is, each time the garage 8 is opened, the cassette 1 is ejected and the head 13 is moved to its initial position and reset. Therefore, when the cassette 1 is replaced, there is no need to return the head 3 to its initial position, which simplifies the mechanism and saves power.

Now, when a new cassette 1 is inserted in this state, the insertion direction becomes parallel to the base plate 9, as shown in FIG. 4, and the slide plate A1
1 moves in the direction of the arrow until it reaches 11' and stops. However, the slide plate B12 is
As shown, the pointer 64 and the ratchet 23 are engaged and cannot be moved, and the spring 14 is stretched, applying a biasing force to the slide plate B12 in the direction of the slide plate A11, that is, in the direction of the 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, and becomes a force in the direction of the arrow 75 in FIG. 6B. For this reason, the ratchet 23
is stabilized in the state shown in FIG. 6A. Also slider 1
6 is also in contact with the cam 63 by the spring 95, so it is stable and determines the position of the head 13. This charge force is against the springs 14 and 60, but the spring 14 is able to rotate the ratchet 23 against the contact friction force between the cam 63 and the cam follower 24 due to the spring 95, and the spring 60 is This requires the frictional force between the pointer 64 and the ratchet, and the force that allows the slide plate A11 to move while pushing the cam follower 24 and ejecting the cassette 1 as before. Therefore, the force is somewhat large, but since it is performed by the insertion operation of the cassette 1, that is, by a human hand, or by force obtained from a mechanism outside the device, it does not impose any burden on the device. There is no obstacle to its simplification and miniaturization. Moreover, the spring 14 only applies a force that attracts the two plates, and the size of the spring 14 is 6.
0 will not be affected. That is, the charging force is not increased unnecessarily, and the discomfort caused to the hand when inserting the cassette and the burden placed on other mechanisms are also reduced. Furthermore, by making the axis 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 as the sliding force on the base plate 9, and a conversion mechanism is not required. I don't. Also, the movement and positioning of the head 13, the insertion of the cassette,
By organically linking the discharge operations, an extremely efficient and simple mechanism has been realized.

Under these circumstances, the solenoid 17 is energized. Solenoid shaft 76 as shown in Figure 6B
is attracted and moves in the direction of arrow 77. For this reason,
The counter lever 67 is connected to the spring 69 via the pin 78.
Rotate counterclockwise against the End portion 67a
comes into contact with the protrusion 64a of the pointer 64, and similarly,
Rotate the pointer 64. At this time, the claw portion 67b of the counter lever 67 moves to a position where it engages with the ratchet 23, and then the claw portion 67b of the pointer 64 moves to a position where it engages with the ratchet 23.
4b is spaced apart from the ratchet. Ratchet 2
3 is biased in the direction of the arrow 75 as described above, so it rotates until it comes into contact with the claw portion 67b. The amount of rotation is set so that the claw portion 64b exceeds the ratchet 23 by one peak. After that, solenoid 1
7 is turned off, and the spring 69 returns to the state shown in FIG. 6A. At this time, the ratchet 23 has advanced one step, and the slider 16 is moved by the cam 63. In this way head 13
is moved by one track each time the solenoid 17 is energized. The suction force of the solenoid 17 only needs to resist the frictional force between the ratchet 23 and the pointer 64 caused by the spring 69 and the biasing force in the direction of the arrow 75, and only a very small force is required. Therefore, the solenoid 17 can be made smaller and save power. It is very useful for In addition, the circuit configuration is simplified because power 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.
That is, when positioning the ratchet 23, a gap d is provided between the counter lever 67 and the pointer 64, so that the counter lever 67 does not have any influence, and the accuracy can be maintained. Also, when returning the head 13 to its initial position,
The pointer 64 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 two slide shafts 27a and 27b, which are guide members of the slider 16, are constructed as shown in FIGS. 7A and 7B. The slide shaft 27a is inserted into the engagement hole 16a of the slider 16. 79 is Bushiyu. Further, the slide shaft 27b is fitted into the engagement groove 16b, and the slide shaft 27a moves the top, bottom, left and right sides of the slide shaft 27b.
to determine the top and bottom. Therefore, as shown in the figure, the slide shaft 27a is attached to the slide block 25 by two adjustment screws 80, 81 and a presser spring 26b.
is held, and its vertical, horizontal, and horizontal positions can be adjusted (the other end has a similar configuration, although not shown). Also, the slide shaft 27b has an adjustment screw 8.
2 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 with respect to the motor 41, such as up and down, left and right, as well as inclination, over its entire stroke.
This is very effective in maintaining contact with the 2nd track 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 position of the head 13 can be adjusted to obtain sufficiently high performance without requiring high precision other than the cam 63 and the ratchet 23. can.

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 the open state and B is the cassette 1.
is set in the motor 41. As seen in FIG. 5, the two positioning pins 34a and 34b for positioning the cassette 1 are located far from the rotation axis of the garage 8 and the compartment 5 that connect the support shafts 10a and 10b, and are used for attaching and detaching the cassette 1. It follows that the motor 41, pad 46, etc. will be affected. In this embodiment, as shown in FIG.
Depending on how you choose the position relative to 6, this cassette 1
When using it, it is constructed so that it can be escaped with a small opening angle. That is, with the cassette 1 being installed and removed,
The opening angle is minimized to prevent dirt from entering and contact with the interior by fingers. The opening angle of the garage 8 is determined by the contact with the member having the support shaft 10b, and the opening angle of the compartment 5 with respect to the garage 8 is determined by the protrusion 83 of the compartment 5. Now the 8th
In the movement from Figure A to Figure 8B, the insertion spring 4
0 is located above the compartment 5 so that the cassette 1 can be attached and detached at A. When the garage 8 is lowered in this state, the cassette 1 is set onto the motor 4 while the relative angle between the garage 8 and the compartment 5 is maintained by the spring 31. When the center core 53 is inserted into the spindle 42, there may be some resistance and the insertion may be incomplete. After the compartment 5 is stopped, only the garage 8 continues to descend, and the insertion spring 40 presses the center core 53 to ensure that it is pushed into the spindle 42. Further, when the garage 8 is rotated and lowered, the upper convex piece 84 of the compartment 5 and the insertion spring 40 come into contact with each other. Therefore, the tip 40a is connected to the center core 53.
8B, and does not become a load for rotating the center core 53. In this way, although the insertion spring 40 provided in the garage 8 has a simple structure of only one leaf spring, it is possible to reliably insert the center core 53 into the spindle 42 and perform the subsequent separation operation.
It's valuable.

Similarly, a padded spring 43 installed in the garage 8
As shown in the figure, the PG 45 and the pad 46 arranged on the pad plate 44 which is biased and held on the base plate 9 side are also attached to the pad height determining pin 47a.
Its height is determined precisely by

FIG. 9 shows a state in which the position of the pad plate 44 has been determined. The height of the pad 46 is determined by contacting two pad height determining pins 47a and 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 or PG45
The height is determined accurately. Its planar position has already been determined by the pad spring 43.

As a result, the contact between the head 13 and the magnetic sheet 52 and the relationship between the PG pin 87 and the PG yoke 56 are reliably guaranteed, and the recording performance can be made sufficient. In addition, PG Yoke 5
Reference numeral 6 denotes a magnet 90 to which a magnetic sheet 52 is attached, which is provided integrally with a magnetic plate 89 that comes into contact with the pedestal part 88 of the motor 41, and which attracts this magnetic plate 89 for positioning and transmission of rotational driving force. PG magnetic force
Tell pin 87. This is detected by the coil 91,
The output is PG.

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

As mentioned above, when the cassette 1 is attached or detached, all the parts that obstruct it are moved out of the way. However, since the erroneous recording prevention claw 36 is located near the axis of the garage 8 and the switch 37 is also located near it, it is necessary to move it from the normal detectable position. This can be seen in Figure 10A. Therefore, as shown in 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, and moves the cassette in the direction of the arrow 15 or the opposite direction. Configure it so that it does not interfere with the slide in step 1. The switch plate 92 is supported by a shaft 94 on a side wall (not shown) of the base plate 9.
The position is fixed by making contact with the Then, as described above, it is moved from this state so as not to interfere with the sliding of the cassette 1. Therefore, it is not necessary to take the switch 37 into account when determining the pivot direction of the garage 8, which increases the degree of freedom in design and allows other advantages to be utilized effectively.

Effects of the Invention As is clear from the invention described above, in the electronic still camera recording device employing the present invention, the cassette mounting mechanism is a rotary type, which is the most compact and simplest. Since the insertion and ejection direction of the cassette can be parallel to the device, this operation can be organically linked to the mechanism of the device, allowing for an extremely efficient design of the device as a whole, making it smaller and lighter and reducing costs. This will greatly contribute to the

[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.
The figure is an explanatory diagram of the main part as seen from the X direction of Fig. 3, Fig. 5 is an explanatory diagram of the main part as seen from the Y direction, Fig. 6A,
B is an explanatory diagram of the main parts of the same device, FIGS. 7A and B are explanatory diagrams of the main parts similarly seen from the Z direction of FIG. 3, and FIGS.
B and FIG. 9 are both explanatory views of the main parts as seen from the Y direction, and FIGS. 10A and B are explanatory views of the main parts of the same apparatus. 1... Cassette, 2... Shutter, 5... Compartment, 6... Shutter opening/closing mechanism, 8
... Garage, 10a, 10b ... Support shaft, 13 ... Head, 33a, 33b ... Positioning hole, 34a, 34b ... Positioning pin, 46
... Padded, 52 ... Magnetic sheet, 58 ... Window.

Claims (1)

[Scope of Claims] 1. Consists of a garage that opens and closes by rotational movement, and a compartment that is coaxial with the garage and in which a cassette is attached in conjunction with the garage,
A recording device for an electronic still camera, characterized in that the cassette is inserted into or ejected from the compartment by sliding the cassette, and the sliding direction coincides with the direction of the axis. 2 The cassette is provided with a head insertion window covered by a shutter that opens and closes when the cassette is inserted into or ejected from the compartment, and the garage is equipped with a magnetic sheet that enters the window when the cassette is installed. 2. The recording device for an electronic still camera according to claim 1, further comprising a pad for ensuring reliable contact with the head, and a shaft positioned on the opposite side of the window. 3. According to claim 1, the cassette is provided with two positioning holes that fit into positioning pins on the device side when the cassette is installed, and the shaft is configured on the opposite side to the positioning holes. electronic still camera recording device.