JPS6330705B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette loading/unloading device for a cassette tape recorder in which a cassette is moved from an insertion position (recording/playback standby position) to a recording/playback position and loaded.

In a cassette tape recorder in which the cassette is inserted at the upper insertion position and then moved to the lower recording and playback position and installed, after the container is moved to the recording and playback position, a head is inserted onto the tape running surface of the container. In order to do this, the container that holds the cassette and moves it from the insertion position to the recording/playback position must be held at the upper cassette insertion position until the cassette is fully inserted. It is first necessary to hold the cassette securely in place, and then move it to the lower recording and playback position when the insertion of the cassette is completed.

In view of the above, an object of the present invention is to provide a cassette loading/unloading device for this type of cassette tape recorder that can always maintain proper operation timing and load/unload the cassette smoothly and properly. It is.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described below.

1 is a main body substrate, and a vertical substrate 2 is fixed to one side of the main body substrate 1. Reference numeral 3 denotes a movable plate, which has elongated holes 6 and 7 engaged with pins 4 and 5 protruding from the outside of the vertical substrate 2, and elongated holes formed in the bent horizontal surface of the vertical substrate 2. 8 is engaged with a pin 9 projecting downward from the bent portion 3' of the movable plate 3, and is supported slidably in the front and rear directions. An arm 10 that presses the end face of the insertion cassette is integrally bent at the bent portion 3' of the movable plate 3, and the movable plate 3 is always attracted to the front side of the main base plate 1 by a spring 11. Reference numeral 12 denotes a container driving plate, and the container driving plate 12 has long holes 15 and 16 connected to pins 13 and 14 protruding from the outside of the vertical substrate 2.
are engaged and supported so as to be slidable in the front and rear directions in parallel with the movable plate 3. In addition, the container drive plate 12
A sliding plate 17 is in contact with the outer surface of the sliding plate 17.
The elongated holes 18 and 19 are engaged with the pins 13 and 14, so that they can be slid back and forth. An interlocking biasing spring 20 is stretched between the sliding plate 17 and the container driving plate 12. 21 is a locking mechanism for the moving plate 3 and the container driving plate 12, and the locking mechanism 21 includes a lock arm 22 whose base end is rotatably supported on the pin 4, and a lock lever superimposed on the lock arm 22. 24
is rotatably supported by a pin 23 at an intermediate portion thereof. A locking step 25 is formed at the distal end of the lock arm 22, and an escape recess 26 is formed at the base end thereof.
A locking step 27 corresponding to the locking step 25 of the lock arm 22 and a rising guide portion 28 corresponding to the relief recess 26 are formed on the locking steps 25 and 27 of the lock arm 22 and the lock lever 24. The locking roller 29 on the plate 12 side is engaged at the movement start position, and the locking pin 30 on the movable plate 3 side slides into contact with the rising guide portion 28 of the lock lever 24, and the locking step portion 25 is engaged at the end of the movement. , 27 to the container drive plate 12
At the same time as the side locking roller 29 is removed, the locking pin 30 on the movable plate 3 side is locked in the escape recess 26 to lock the movable plate 3. An engagement arm 31 that constitutes an engagement mechanism between the movable plate 3 and the sliding plate 17 is rotatably attached to the movable plate 3, and a locking pin 32 at the tip thereof is attached to the sliding plate 17. It is biased downward by a spring 34 in order to be locked by the formed locking pawl 33. Further, the engaging arm 31 has an operating arm 35 integrally extending downward from its pivot portion, and the tip of the operating arm 35 is attached to a bent protrusion 36 at the rear end of the vertical base plate 2. At the end of the movement, the locking pin 32 is disengaged from the locking claw 33 of the sliding plate 17. Reference numeral 37 denotes an eject lock lever constituting an eject mechanism that locks the sliding plate 17 at the end of its movement. The stop portion 37a is such that the sliding plate 17 is engaged with a locking pin 38 protruding from the slide plate 17 at its end of movement, and the other end 37b extends toward the rear end of the main body board 1. Reference numeral 39 denotes an eject electromagnet, and the electromagnet 39 is provided with an adsorption lever 40. The tip of the adsorption lever 40 is latched to the other end 37b of the ejection lock lever 37, and both are connected to the excitation of the electromagnet 39. In this state, the eject lock lever 37 is locked, and in the demagnetized state, the lock is released. The suction lever 40 is always urged in the suction direction by a weak spring 41.

Further, a container vertical movement guide groove 42 is formed in the container drive plate 12 . 43 is a container that holds a cassette, and the container 43
is supported by a hanging plate 44 on the main body board 1 so as to be vertically movable. The container 43 is not limited to a box-like shape with a surrounding periphery, but may also have a shape that simply supports the bottom surface of the cassette, or may have no sides. A pin 45 protruding from one side of the container 43 is engaged with the container vertical movement guide groove 42 . The container vertical movement guide groove 42 has an upper horizontal portion 42a that supports the container 43 in the upper cassette insertion position and a lower horizontal portion 4 that supports the container 43 in the recording and playback position.
After the container 43 moves to the recording/playback position, the lower horizontal part 42b further moves to the container drive plate 1.
2 is formed slightly longer so that it moves backward during the remaining motion. Reference numeral 46 denotes a head board.A magnetic head 47, a pinch roller 48, etc. are mounted on the head board 46, and the head board 46 is supported so as to be movable forward and backward with respect to the recording/reproducing position. 49 is an interlocking regulation lever of the head board, and the interlocking regulation lever 4
9 is pivotally supported by a pin 50 so as to be freely rotatable in the front and rear direction, and a locking roller 51 is pivotally attached to the upper surface of the pin 50.
is fitted into the through hole 52a of the rotating arm 52, and is locked at the locking position 52c of the locking protrusion 52b, and the bent piece 5 at the other end of the rotating arm 52
3 is engaged with a protrusion 54 of the head substrate 46. Then, the head board 46 and the rotating arm 52
The space between them is connected by a spring 55. A locking piece 56 is formed at one end of the interlocking regulation lever 49, and a locking pin 5 is formed on the sliding plate 17 correspondingly.
A locking pin 57 and a locking piece 56 are always engaged with each other by a spring 57'.
Further, the rotating arm 52 includes an operating arm 52d.
is integrally formed in a protruding manner, and the actuation arm 52
An actuating roller 52e is attached to the container driving plate 12 corresponding to point d, and the actuating roller 52e pushes the actuating arm 52d during the movement of the container driving plate 12 near the end of its backward movement, causing the rotation. The arm 52 is adapted to be rotated. 58
is a switch operating plate 58, which is attached to the movable plate 3 so as to protrude from the rear end thereof. Reference numeral 59 denotes a power supply microswitch, which is fixed to the rear end of the vertical board 2 and is closed by being pushed by the switch operating plate 58 just before the moving plate 3 reaches the end of its movement. 60
is a cassette.

In the above configuration, when the cassette 60 is inserted from the cassette insertion opening of the container 43, the end face of the cassette 60 first hits the arm 10 of the movable plate 3, so the cassette 60 is further pushed in with force. In this state, the locking pin 32 of the engaging arm 31 on the movable plate 33 side is locked to the locking pawl 33 of the sliding plate 17, so that the movable plate 3 can be slid by the pushing operation of the cassette 60. Spring 11 with plate 17
and moves rearward while accumulating the interlocking biasing spring 20. When the cassette 60 is pushed in the most, the locking pin 30 on the movable plate 3 side of the locking mechanism 21 pushes the rising guide portion 28 of the lock lever 24 and moves the locking stepped portion 27 on the container drive plate 12 side. At the same time, the locking pin 30 on the movable plate 3 falls into the escape recess 26 of the lock arm 22 and is locked to restrict the return movement of the movable plate 3, so that the lock arm 22 and The locking step portion 25 of the lock lever 24,
The locking roller 29 of the container drive plate 12 is disengaged from the container drive plate 27, and the container drive plate 12 becomes movable rearward. Further, when the movable plate 3 reaches the end of its movement, the working arm 35 of the engagement arm 31 moves to the bent protrusion 36.
As a result, the locking pin 32 of the engaging arm 31 is disengaged from the locking claw 33 of the sliding plate 17, and the container driving plate 12, which is now able to move backward as described above, is loaded with energy in the interlocking biasing spring 20. The resulting elasticity causes it to move rapidly backwards. And a little before that,
During the insertion process of the cassette 60, the switch operating plate 58 closes the power supply micro switch 59, so the eject electromagnet 39 is energized and the suction lever 4 is energized.
0 is attracted, the suction lever 40 rotates, presses the other end 37b of the eject lock lever 37, and the eject lock lever 37 is fixed at the locking position, and the locking pin 38 of the sliding plate 17 is locked. The ejection lock lever 37 is locked in the locking portion 37a, and the forward return movement is prevented.

On the other hand, when the container drive plate 12 rapidly moves backward as described above, the container vertical movement guide groove 4
The container 43 is lowered while being guided by the inclined portion 42c of No. 2, and the cassette 60 is installed at the recording/playback position. Furthermore, when the cassette 60 reaches the recording/playback position, the container driving plate 12 moves rearward because there is a residual amount in the lower horizontal portion 42b of the container vertical movement guide groove 42, and as a result of this movement, the sliding plate 17 side first moves backward. The locking pin 57 is connected to the interlocking regulation lever 49 on the head board.
Since the locking piece 56 of the rotary arm 52 is pushed and rotated backward, the locking roller 51 is pressed against the locking protrusion 5 of the rotating arm 52.
2b, and the rotary arm 52 is made rotatable. Next, the operation roller 52e of the container drive plate 12 moves to the rotation arm 52.
Since the operating arm 52d of the head board 46 is pushed, the head board 46
At this time, advances to the recording/playback position. Therefore, the head board 46 can be reliably advanced to the recording/playing position with a slight delay from the time when the cassette 60 is installed at the recording/playing position.
is installed smoothly and properly.

By the way, it is absolutely necessary to properly maintain the timing of the operations from the time of insertion of the cassette 60 to the time of installation, as described above, in order to ensure that the subsequent operations are carried out smoothly. When the container 43 is moved from the insertion position to the recording/playback position, the locking roller 29 of the container drive plate 12 locks the lock arm 22 and the lock lever 24 of the lock mechanism 21 at the upper cassette insertion position until the cassette 60 is completely inserted. When the cassette 60 is securely held by the steps 25 and 27 and fully inserted, the locking pin 30 of the movable plate 3
falls into the relief recess 26 of the lock arm 22, and at that time, the upward guide portion 28 of the lock lever 24
Push down and lock arm 22 and lock lever 2.
4 is rotated upward, and the locking steps 25 and 27 are connected to the locking roller 2 of the container drive plate 12.
Cassette 6 is removed more securely than 9.
When the insertion of 0 is completed, it can be quickly and reliably moved and placed at the recording/playback position.
That is, to explain the above operation in more detail based on FIG. 7, from the time when the insertion of the cassette 60 is started until just before the insertion is completed, the locking pin 30 of the movable plate 3 does not touch the upper edge of the lock arm 22. Since the lock arm 22 slides, the lock arm 22 is constantly pressed down, and therefore the lock arm 22 and the lock steps 25, 27 of the lock lever 24 may be inadvertently locked to the lock roller 29 of the container drive plate 12. Container drive plate 12
is securely held in place until the insertion of the cassette 60 is completed (FIG. 6A). When the insertion of the cassette 60 is completed, the locking pin 30 of the movable plate 3 falls into the escape recess 26 of the lock arm 22, so that the pushing down action of the lock arm 22 is released. When the rising guide portion 28 of the lock lever 24 is pushed down, the locking step portion 27 of the lock lever 24 is forcibly released from the locking roller 29 of the container drive plate 12 (FIG. B).
Since the locking recess 27 of the lock arm 22 and the locking roller 29 are guided to release the locking, the cassette 60
When the insertion of the cassette 60 is completed, the container driving plate 12 can be rapidly and reliably moved rearward, so that the cassette 60 that has been inserted can be reliably moved to the recording/playback position.

In addition, the cassette 60 placed at the recording and playback position
When the eject electromagnet 39 is de-energized, the end 37b of the eject lock lever 37 is unlocked, and the locking pin 38 loses its biasing force. Due to the strong force, the eject lock lever 37 is rotated to the right, and the locking pin 38 is disengaged from its locking portion 37a, and the sliding plate 17
is an interlocking biasing spring 20 with a container drive plate 12.
It slides back forward with the accumulated elasticity. Therefore, at the initial stage of the return operation of the container drive plate 12, the pins 45 of the container 43 are guided by the lower horizontal portion 42b of the container vertical movement guide groove 42, so that the container 43 can perform recording and playback of the cassette 60. However, the operating roller 52e of the container drive plate 12 separates from the operating arm 52d of the rotating arm 52, so the rotating arm 52 rotates to the left according to the spring 55 and the bending piece 53
presses the protrusion 54, and the head board 46 retreats from the recording/playback position. Next, the container 43 is guided to the inclined part 42c of the container drive plate 12, so that
It is moved upward from the recording/playback position, and further guided by the upper horizontal portion 42a to reach the cassette insertion position. Then, when the container driving plate 12 finishes returning forward, the locking roller 29 returns to the position where it locks on the lock arm 22 and the tilting step portions 25 and 27 of the lock arm 24. The downward rotation prevention action on the right side disappears, and the locking pin 30 of the movable plate 3 is pushed up by the rising guide portion 28, and the locking pin 30 is removed from the escape recess cutout 26 of the lock arm 22. (Fig. 7D). Therefore, the movable plate 3 rapidly moves back forward due to the accumulated elasticity of the spring 11, but this movement of the movable plate 3 removes the cassette 6 in the container 43, which has already moved to the cassette insertion position.
0 is pushed by the arm 10 and ejected in front of the insertion opening of the container 43, and the ejecting operation is completed. Note that when the eject operation is completed, the locking steps 2 of the lock arm 22 and the lock lever 24
5 and 27 are locking rollers 29 of the container drive plate 12.
is locked, and the locking pin 30 of the movable plate 3 returns to the state in which it presses the upper end edge of the lock arm 22 and lock lever 24 (FIG. 7E). Even when the cassette 60 is removed as described above, as is clear from the above explanation, the head board 46 is retracted at the beginning of the return movement process of the container drive plate 12, and the head board 46 is retracted slightly later than that. Since the container 43 is moved upward, the removal of the cassette 60 is performed smoothly and appropriately in the same way as when it is installed.

In summary, the present invention includes a container that holds a cassette, a movable plate that is moved by inserting the cassette into the container, and a movable plate that is movable parallel to the movable plate and that moves the container to record the container. a container drive plate for moving to a playback position;
A sliding plate slidable in the direction of movement is provided along the outer surface of the container driving plate, the container driving plate and the sliding plate are connected by an interlocking biasing spring, and the moving plate is provided with an engagement arm. The sliding plate is pivotably supported, and constitutes an engagement mechanism in which the movable plate engages with the sliding plate at the starting end of the movement and disengages at the end of the movement due to the rotational behavior of the engaging arm, and the sliding plate The eject mechanism is locked in cooperation with an electromagnet, and a head board is provided that can move forward and backward with respect to the recording and playback position where a magnetic head, pinch roller, etc. are attached, and the head board and the container drive plate are connected. An interlocking regulation lever is provided which is interlocked via a rotating arm, locks the rotating arm until the container reaches the recording/playback position, and releases the locking with the sliding plate, so that the container can play the recording/playback. After reaching the position, the head board is advanced to the recording and playback position by the remaining movement of the container drive plate, so the container that holds the cassette and moves it from the insertion position to the recording and playback position is moved from the cassette insertion position to the recording and playback position. It is possible to securely hold the head board in that position until the cassette is completely inserted, and then move it to the recording/playback position once the cassette has been inserted. The effect is obtained that the operation can always be performed at a reliable timing, and the loading and unloading of the cassette can be done smoothly and properly.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
Figure 1 is a perspective view, Figure 2 is a partially exploded perspective view of the main parts, Figure 3 is a side view of the main parts without the cassette installed, and Figure 4 shows the state after the cassette is installed. Fig. 5 is an exploded perspective view of the main parts; Fig. 6 A, B, C, and D are explanatory diagrams of some operations;
FIGS. 7A, B, C, D, and E are explanatory diagrams of operations of other parts. 2... Vertical board, 3... Moving plate, 12... Container driving plate, 17... Sliding plate, 20... Interlocking biasing spring, 21... Lock mechanism, 22... Lock arm, 24... Lock lever, 25, 27...Latching stepped portion, 26...Escape recess, 28...Rising guide portion, 29...Latching roller, 30...Latching pin, 3
DESCRIPTION OF SYMBOLS 1... Engagement arm, 37... Eject lock lever, 39... Electromagnet, 42... Container vertical movement guide groove, 43... Container, 46... Head board, 47... Magnetic head, 48... Pinch roller, 49...interlocking regulation lever, 52...rotating arm, 60...cassette.

Claims (1)

[Scope of Claims] 1. A container that holds a cassette, a movable plate that is moved by inserting the cassette into the container, and a movable plate that is movable in parallel with the movable plate and that allows the container to record and playback by its movement. a container driving plate to be moved to a position; and a sliding plate slidable in the direction of movement along the outer surface of the container driving plate;
The container driving plate and the sliding plate are connected by an interlocking biasing spring, and an engaging arm is pivotally supported on the moving plate, and the rotational behavior of the engaging arm causes the sliding plate to contact the sliding plate at the starting end of the moving plate. A cassette tape recorder comprising an engaging mechanism that engages and disengages at the end of movement, and the sliding plate locks the eject mechanism in cooperation with an electromagnet. Cassette loading/unloading device. 2. The container drive plate, which is movable in parallel with the moving plate, has a base end that is rotatably supported, and a locking step of the locking roller of the container drive plate at the tip and a locking step of the moving plate at the base end. It consists of a lock arm in which a stop pin escape recess is formed, and a lock lever whose intermediate portion is rotatably pivotally connected to the lock arm so as to overlap, and the lock lever has a locking step corresponding to the locking step of the lock arm. , a rising guide portion is formed in a direction corresponding to the escape recess of the lock arm and in a direction for releasing the locking of the container driving plate from the locking roller by movement of the locking pin of the movable plate. A cassette loading/unloading device in the cassette tape recorder according to item 1. 3 A container that holds a cassette, a moving plate that is moved by inserting the cassette into the container, and a container drive that is movable parallel to the moving plate and that moves the container to the recording and playback position by its movement. A recording device comprising a plate and a sliding plate which is slidable in the direction of movement along the outer surface of the container drive plate and connected to the container drive plate by an interlocking biasing spring, and is equipped with a magnetic head, a pinch roller, etc. A head board is provided that can move forward and backward with respect to the playback position, the head board and the container drive plate are interlocked via a rotating arm, and the swing arm is locked until the container reaches the recording and playback position, and An interlocking regulation lever is provided that is released from the lock by the sliding plate, and after the container reaches the registered playback position, the head board is advanced to the recording playback position by the remaining movement of the container drive plate. A cassette loading/unloading device for a cassette tape recorder, characterized by: