JPH0474792B2 - - 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.

BACKGROUND ART In a recording device for an electronic still camera, a center core to which a magnetic sheet is attached is inserted into a spindle of a motor to drive rotation. The spindle is equipped with a magnet, which attracts a magnetic plate placed in the center core. Furthermore, a centering spring is provided in the center core, and centering is performed by sandwiching the spindle.

Problems to be Solved by the Invention In addition to transmitting driving force, the magnet described above also performs suction for reliable insertion of the center core. However, due to the presence of the centering spring, there is resistance to insertion, and a fairly large suction force is required to overcome this resistance. However, if the suction force is too strong, the force of the centering spring will cause centering failure. In order to eliminate these unstable elements of rotation, the center core is inserted mechanically and securely, and the magnet has a weak force necessary only to transmit rotational force and prevent it from coming off, thereby preventing centering failure. There are proposals to do so. However, simply pushing down from the top like with a floppy disk increases the load on the motor. Therefore, there is a need for a simple mechanism that can solve these problems all at once.

Means for Solving the Problems The present invention has been made in view of the above problems, and the center core that holds the magnetic sheet is rotated by inserting a spindle provided in the main body of the device.
A recording device for an electronic still camera that performs recording operations, using a cassette that stores a magnetic sheet.
It consists of an outer lid provided on the device body, a compartment that is biased toward the device body by the outer lid, stores the cassette, and performs the mounting operation in conjunction with the outer lid, and a leaf spring that connects the cassette to the outer lid. The outer lid and the compartment have the same rotation axis within the main body of the device, and the direction in which the cassette is stored in the compartment matches the direction of the rotation axis, and the push member is fixed at one end. The end is arranged near the rotation axis, and the direction of extension to the free end is perpendicular to the direction in which the cassette is stored, and when the outer lid and compartment are in the open state,
The free end of the pushing member is spaced apart from the cassette in the compartment, and during the loading operation, the free end of the pushing member is inserted into the center core of the cassette in the compartment that reached the main body of the device first, but still remains after the compartment has finished its operation. By operating the outer cover, the free end of the pushing member comes into contact and reliably pushes the center core into the spindle, and
Before the operation of the outer lid ends, the protrusion provided on the outer lid side of the compartment engages with the pushing member, so that the contact between the free end and the center core is released, and then the outer lid It is configured so that the operation is completed.

Effects With the above-described configuration, the present invention allows the center core to be reliably inserted into the spindle by the pushing member made of a leaf spring when installing the cassette, and this is due to the positional relationship between the outer lid and the compartment. , and depends on the timing when the pushing member fixed to the outer lid is attached. Furthermore, the convex portion of the compartment can ultimately push the pushing member toward the outer lid and separate it from the center core. In other words, the compartment reaches the set position before the outer lid, the pushing member becomes pushable as the gap narrows, and the protrusion of the compartment pushes up the pushing member when the outer cover is just about to reach its final position. The above-mentioned operation is made possible by the section. Therefore, the leaf spring can be used alone to ensure reliable insertion into the spindle, and the subsequent separation action does not apply any load to the motor.
It is very simple, yet highly effective, and extremely effective for the entire device. Also,
The direction of the rotation axis of the outer lid and the compartment matches the direction in which the cassette is stored in the compartment, and one end of the pushing member shaped like a leaf spring is fixed near the rotating shaft, so this pushing member is aligned with the rotating shaft. When the cassette is inserted, the pushing member is pushed from the side, and an external force is applied to the tip, which is the weakest free end of the leaf spring, causing the tip to completely invert. This has the advantage of being less likely to lead to damage to the pushing member, which would result in plastic deformation and no pushing action at all.

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 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 has a plurality of guide pieces 7a on the side where the cassette 1 is inserted.
~7f, making it easier to insert. A garage 8, which corresponds to an outer lid, is arranged outside the component 5, and both are pivotally supported by support shafts 10a, 10b on a 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, cassette 1
When inserting, it is slid in an inclined state relative 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 located on the slide plate A11, and both slide on the base plate 9 in the cassette insertion direction to connect the head 1.
3 and ejects the cassette. 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 protrusion of the hook plate 19 that is engaged with the notch 18a of the opening spring 18 opens. As the portion 19a moves along the inclined surface 18b of the cutout portion 18a in accordance with the upward movement of the opening spring 18, the hook plate 19 moves in the direction of the arrow 15a (when the garage 8 is closed, , the guide portion 18c of the release spring 18 is the convex portion 19a.
The hook plate 19 does not move because the entire release spring 18 is bent. ), 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.
Furthermore, by simultaneously pushing the slide plate B12, the slide plate A11 moves its movement 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. The slider 16 is moved by pushing up the cam follower 24 that comes into contact with a cam (described later) provided on the head 13.
to the initial position. The slider 16 is pressed against the slide block 25 by springs 26a to 26c (26
d (described later) and adjustment screws (described later) move along slide shafts 27a, 27b held by adjustment screws (described later), and are biased by a spring toward the cam. Garage 8 is spring 2
8 is hung between the spring hook 29 of the base plate 9 and the spring hook 30 of the garage, so that it always tries to open, and the spring 31 biases the compartment 5 away from the garage 8. 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 pin 32, and the cassette 1 is inserted into the positioning holes 33a, 33.
b is positioned by fitting into the positioning pins 34a and 34b, and the two pins and the height determining pin 35
The height is also determined by During this time, cassette 1
The switch 37, which engages with the accidental erasure prevention pawl 36, is pushed by the projection 38 of the garage 8 to a position where it does not engage 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. Further, 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 a pad 46, which are also attached to a pad height determining pin 4.
7a and 47b are in contact with the pad 46, and the height adjustment screw 48 is in the center of the spindle 42 (described later).
is positioned in contact with the After these operations are completed, the lock hole 49 of the garage 8 engages the lock 50 to secure the garage 8. In order to release the lock 50, the lock 50 is disengaged by pushing the pressing portion 50a against the spring 51.

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 45a, 45b and a positioning spring 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 is a window provided in the same shape on both sides of the housing 57 to expose the magnetic sheet 52 after the shutter 2 slides in the direction of arrow 3 2', and 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 direction. Slide plate A
11 is moved in the direction of arrow 15 by the cassette 1 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, it moves against the spring 61 due to its shape, and the hook part 1
1b and moves in the opposite direction of arrow 15. The slide plate B12 is moved by the spring 14.
The slide plate A11 and the slide plate A11 are attracted to each other, and eventually the spring force is lost when they come into contact with each other, and the slide plate A11 moves together with the force of the spring 60. This movement is carried out by the rack part 12a, gears 21, 22 as described above.
The gear 62 provided integrally with the ratchet 23 is rotated through the cam 63, and the cam 63 is also rotated.
FIG. 6A shows the situation 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 in a direction 64' and the ratchet 23 rotation is possible. A counter lever 67 shares a shaft 68 with the pointer 64, and its end 67a is pulled and biased clockwise by a spring 69.
The other end 67b is in contact with the stopper portion 70 of the base plate 9. This counter lever 67 is configured to sandwich the pointer 64 from above and below, and is equipped with a spring 71 to bias the pointer 64. The protrusion 64a of the pointer 64 has a claw 64b that comes into contact with the ratchet 23 and is stopped at the end 64a.
7a, a gap d is created. Since these spring forces are small, slide plate A
11 does not place much burden on movement. In other words, there is no need for a mechanism to separate the pawl portion 64a from the ratchet 23, and the head 13 can be easily moved.
can be moved to its initial position. 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 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 this 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, it is not necessary to return the head 13 to its initial position, which simplifies the mechanism and saves power.

Now, when a new cassette 1 is inserted in this state, its 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 mentioned above, this force exists until the garage 8 is opened and the slide plates A11 and B12 come into contact, and in FIG.
It becomes a force in five directions. Therefore, the ratchet 23 is stabilized in the state shown in FIG. 6A. Further, since the slider 16 is in contact with the cam 63 by the spring 95, it is stabilized and the position of the head 13 is determined. 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 pointer 6
4 and the ratchet, and a force that allows the slide plate A11 to move while pushing up 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. , without hindering 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. Thereafter, the power to the solenoid 17 is cut off, and the spring 69 returns to the state shown in FIG. 6A. At this time, Ratchet 2
3 is one step forward, and the slider 16 is moved by the cam 63. In this way, the head 13 is moved one track each time the solenoid 17 is energized. The suction force of the solenoid 17 is the spring 69
, due to the urging force in the direction of arrow 75. Ratchet 2
It is only necessary to resist the frictional force between the solenoid 17 and the pointer 64, and an extremely small force is required, which greatly contributes to miniaturization of the solenoid 17 and power saving. 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. 3, and moves up to 13'. Also, since the pointer 64 and the counter lever 67 are configured in two stages, the positioning of the head 13 can be easily adjusted.
That is, when positioning the ratchet 23, a gap d is provided between the counter lever 67 and the pointer 64 to prevent the counter lever 67 from exerting any influence, thereby maintaining its accuracy. Further, when returning the head 13 to the initial position, the pointer 64 is moved independently, and when the head 13 is sent, it is moved in unison, thereby preventing 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 Bushiyu. Also slide shaft 27
b is fitted into the engagement groove 16b, and the slide shaft 27a determines the top, bottom, left and right, and 27b determines the top and bottom. Therefore, as shown in the figure, the slide shaft 27a is held against the slide block 25 by two adjustment screws 80, 81 and a presser spring 26b.
Its vertical and horizontal positions can be adjusted. (Although not shown, the other end has a similar configuration.) Also, the slide shaft 27b is attached to the presser spring 26 of the adjustment screw 82.
c, and its vertical position can be adjusted. (Same configuration on the other end). Head 13 like this
The position of is slightly up, down, left, right, and
The inclination can be completely adjusted over the entire stroke, which is very effective in maintaining contact with the magnetic sheet 52 and tracking accuracy. Also, the positional relationship between the cam 63 and the slider 16 is determined by adjusting the adjustment plate 72.
Therefore, the position of the head 13 can be adjusted, and sufficiently high performance can be obtained without requiring high precision other than the cam 63 and ratchet 23.

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, two positioning pins 34a, 34b for positioning the cassette 1 connect the support shafts 10a, 10b. The motor 41, pad 46, etc. are located far from the rotation axis of the garage 8 and the compartment 5 and affect the attachment and detachment of the cassette 1. 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, when the cassette 1 is being attached or detached, the opening angle is minimized to prevent dirt from entering and contact with the inside by fingers or the like. 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, in the movement from FIG. 8A to FIG. 8B, the insertion spring 40 is
In A, the cassette 1 is located above the compartment 5 so that it can be attached and detached. In this embodiment, the insertion spring 40 is installed in a direction perpendicular to the axial direction of the support shaft 10a.
If you lower garage 8 as it is, garage 8
The cassette 1 is cassetted into the motor 41 while the relative angle between the cassette 1 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 spaced upward from the center core 53, as shown in FIG. 8B, and does not become a load for rotating the center core 53. In this way, garage 8
Although the insertion spring 40 provided in the inserting spring 40 has a simple structure of only one leaf spring, it is valuable because it allows reliable insertion of the center core 53 into the spindle 42 and subsequent separation operation.

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. Using this height adjustment screw 48 as the last one, the pad plate 44, that is, the pad 46 or the PG4
5. 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. The magnetic force of PG
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 parts that obstruct it are evacuated out of the path. However, the erroneous recording prevention claw 36 is
Since the switch 37 is located near the axis of the switch 37, it is necessary to move it from the normal detectable position. This can be seen in Figure 10A. 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, and moves the cassette 1 in the direction of the arrow 15 or the opposite direction. Configure it so that it does not interfere with the slide. 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. 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 above explanation, the recording device for an electronic still camera according to the present invention is capable of reliably inserting the center core into the spindle using only a pushing member composed of a single leaf spring, and then Depending on the timing with the garage or compartment,
The pushing member can be separated from the center core, the load on the motor is not increased, the structure is simple, and the effect is great. Furthermore, since the insertion member is arranged perpendicularly to the insertion direction of the cassette, even if the pushing member comes into contact with the cassette, it will not extend or contract the leaf spring of the pushing member, so that no external force will be applied to the weakest tip of the leaf spring. It is highly reliable as it is unlikely to cause damage to the pushing member, such as plastic deformation due to inversion of the tip.
In other words, it is an extremely effective invention for the entire device.

[Brief explanation of the drawing]

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 view of the main part seen from the X direction of Fig. 3, Fig. 5 is an explanatory view of the main part 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, 5...compartment, 8
... Garage, 10a, 10b ... Support shaft, 31 ... Spring, 40 ... Insertion spring, 40a
... Tip, 41 ... Motor, 42 ... Spindle, 52 ... Magnetic sheet, 53 ... Center core, 83 ... Protrusion, 84 ... Convex piece.

Claims (1)

[Claims] 1 A recording device for an electronic still camera that performs a recording operation by rotating a center core that holds a magnetic sheet by inserting a spindle provided in the device body, which uses a cassette that stores the magnetic sheet, and The cassette is constructed of an outer cover provided on the apparatus main body, a compartment that is biased toward the apparatus main body by the outer cover, stores the cassette, and performs a mounting operation in conjunction with the outer cover, and a leaf spring. a pushing member having one end fixed to the outer cover, and the outer cover and the compartment have the same rotational axis within the apparatus main body, and the direction in which the cassette is stored in the compartment and the direction of the rotational axis are the same. and the pushing member has its fixed end disposed near the rotating shaft and is configured such that the direction in which it extends to the free end is perpendicular to the direction in which the cassette is housed, and the pushing member In the open state, the free end of the pushing member is spaced apart from the cassette in the compartment, and during the loading operation, the free end of the pushing member touches the center core of the cassette in the compartment that has reached the main body of the device first. , by still operating the outer cover after the compartment has finished its operation, the free end of the pushing member comes into contact to ensure that the center core is pushed into the spindle, and the operation of the outer cover is completed. Before this, the protrusion provided on the outer lid side of the compartment engages with the pushing member, thereby releasing the contact between the free end and the center core, and then the outer lid A recording device for an electronic still camera, characterized in that it is configured so that the operation ends.