JPS5942383B2 - Tape recorder operation switching device - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a method for locking the fast forward button or the rewind button in the push-in position as necessary when performing a cue (temporary fast forward) or review (temporary rewind) operation from a playback state. The present invention relates to an operation switching device for a tape recorder that can perform the following operations.

In conventionally known operation switching devices, when temporarily fast forwarding or rewinding from a playback operating state, the playback operation member is locked in the push position and the fast forward or rewind button is pressed, and the fast forward or rewind button is pressed. When the return button is released, these buttons are configured to automatically return and reproduce the playback operation state again, and these trough operations are called cues or reviews.

However, when queuing or reviewing for a long time, it is a pain to keep pressing the fast forward or rewind button during that time.

Therefore, when performing cue or review, it may be possible to lock the fast forward button or rewind button in the push-in position so that these operations can be performed without having to release the button. , which is inconvenient when you want to perform a queue or review. The present invention was made based on these circumstances, and its purpose is that when performing cue or review operations, these operations are normally performed only while the fast forward or rewind button is pressed, and other simple operations are performed. It is an object of the present invention to provide an operation switching device for a tape recorder that can also lock a fast forward button or a rewind button in a push-in position by performing the operations at the same time.

Hereinafter, the configuration of the present invention will be explained in detail based on illustrated embodiments. FIG. 1 is a plan view showing the mechanical parts of a cassette tape recorder. On the top surface of the recorder board 1 are a pair of reel shafts 2a, 2b, a capstan shaft 3, a head mounting plate 4,
A pinch roller 5, a push button mechanism 6, etc. are attached.

The push button mechanism 6 has a shaft 7 disposed in the horizontal direction, and from the left side in the figure, operating members such as a recording chopstick 8, a rewind 9, a fast forward 10, a play 11, a stop 12, a pause 13, and an eject 14 are arranged at equal intervals from each other. and rotatably mounted, each of these operating members 8 to 14
is held at the stop position by springs 8a to 14a, and first and second valley locking members 15, 16, etc. are arranged at a lower position between the recording head operating member 8 and the pose operating member 13. It is configured.

Further, a recording/reproducing head 1r1, an erasing head 18, etc. are mounted on the head mounting plate 4.

The head mounting plate 4 is biased downward in the drawing by springs 19a and 19b, and is moved forward by pressing the playback button and pushing the playback operation member 11.
8 is brought into contact with the magnetic tape in a force set (not shown).
Furthermore, the pinch roller 5 follows the forward motion of the head mounting plate 4 and comes into resilient pressure contact with the capstan shaft 3. Furthermore, when the fast forward button or the rewind button is pressed and the fast forward operating member 10 or the rewind operating member 9 is pushed in, when the head mounting plate 4 is in the forward position, this mounting plate 4 moves back slightly and the head 17 , 18 are weakened, and the pinch roller 5 is separated from the capstan shaft 3. As shown in FIG. 2, the first and second locking members 15 and 16 are long in the left and right directions, and are movable forward and backward in the longitudinal direction, and are biased toward the right in the figure by springs 15a and 16a, respectively. has been done.

On the upper edge of the first locking member 15, there are slopes 20, 21, 22 downward to the right below the recording chopstick, playback and stop operation members 8, 11, 12; Locking pawls 20a and 21a are formed at the bottom of each of them. Furthermore, a bending piece 23 is bent toward the right side of the inclined surface 20, and a pressing piece 24 is provided on the left side of the inclined surface 21 to protrude upward. The second locking member 16 is stacked on the row side of the first locking member 15 as shown in FIG.
Slopes 25, 26, 27 downward to the right at the lower positions of 0, 12
However, below each of the inclined surfaces 25 and 26, there are locking claws 25a,
26a are formed respectively.

Further, on the left side of the inclined surface 26, a bent piece 28 located on the left side of the pressing piece 24 is formed. Further, an abutment piece 29 is provided on the lower edge of the second locking member 16 and protrudes downward. An interlocking member 30 is disposed on the momme side of the second locking member 16 as shown in FIG.

This member 30 is attached to the second locking member 16 so as to be able to move back and forth in the left-right direction, and has a sloped surface 3 slanting downward to the right on the upper edge of the rewind and fast-forward operating members 9 and 10.
1 and 32, and a stopper claw 33 is formed at the right end of the playback operation member 11 and facing from the right side. Further, on the left side of the inclined surface 31, a locking protrusion 34 is provided that protrudes in the direction of the cutout. The relationship between the stopper claw 33 and the regeneration operation member 11 is as follows. That is, when the regeneration operation member 11 is locked with the locking pawl 21a of the first locking member 15, the stopper pawl 33 engages the regeneration operation member 11 from the right side when moving the interlocking member 30 to the left. The interlocking members 30 are brought into contact with each other, and the amount of leftward movement of the interlocking member 30 is limited. However, when the regeneration operation member 11 is not locked with the locking pawl 21a or when it is pushed in deeper than the predetermined locking position, the stopper pawl 33 does not come into contact with the regeneration operation member 11, and the interlocking member 30 can be moved sufficiently to the left. Further, a motion selection member 35 is disposed on the male side of the interlocking member 30.

This member 35 is approximately L-shaped, and its bent portion is rotatably supported by the second locking member 16, with one piece 36 positioned to the left of the locking protrusion 34. An engaging stepped portion 3r is formed in the middle of the other piece to face the bent piece 23 of the first locking member 15 from the right side. The motion selection member 35 is biased clockwise by a spring 38, and one piece 36 is always brought into contact with the locking protrusion 34 of the interlocking member 30 from the left side. The recorder board 1
A release lever 39 shown in FIG. 4 is rotatably supported on the lower surface of the lever via a shaft 40.

A drive pin 42 is provided on the upper surface of a flywheel 41 fixed to the lower end of the capstan shaft 3, and a slide plate 43 is provided on the lower surface of the base plate 1, and the slide plate 43 is movable left and right. A magnetic plunger 44 that moves to is attached. The release lever 39 is always urged counterclockwise by a spring 45, and has one end brought into contact with a bent piece 43a formed on the side edge of the slide plate 43 from the left.

In this state, the other end of the release lever 39 is located on the rotational path of the drive pin 42. However, when the magnetic plunger 44 is energized, it is pushed around by the bending piece 43a and moves into the rotation orbit of the drive pin 42 as shown by the imaginary line. Then, the release lever 39 that has moved to the position shown by the imaginary line is pushed by the drive pin 42 due to the rotation of the flywheel 41 and rotates greatly to the position shown by the broken line. drive to the left. Note that by moving the pose operation member 13 to the push-in position,
The engagement between the movable piece 44a of the plunger 44 and the slide plate 43 is released. The magnetic plunger 44 is energized by a predetermined detection signal. This detection signal is generated, for example, when the recording/non-recording reproducing head 17 comes into contact with a non-recording portion of the magnetic tape, and applies a constant current to the plunger coil. Next, the operation of this operation switching device will be explained.

For example, when a tape cassette containing a plurality of songs is attached to both reel shafts 2a and 2b and the play button is pressed, the head board 4 moves forward and the heads 1r and 18 come into contact with the tape in the force set. The pinch roller 5 comes into pressure contact with the capstan shaft 3, and the capstan shaft 3 and the reel shaft 2b on the supply side rotate to perform a playback operation, so that a specific song can be listened to. Further, the regeneration operation member 11 is lowered by pressing the regeneration button, pushes the inclined surface 21 of the first locking member 15 with its lower end, and after moving the locking member 15 to the left, the first locking member 15 is moved downward. When it returns to the right direction, it is locked by the locking pawl 21a below the inclined surface 21 as shown in FIG. 5, and is locked at the pushed-in position. In this way, if you want to listen to the next song while a particular song is being played, or if you want to listen to the song that is being played from the beginning, all you have to do is click or review.

First, if you perform the QUICK or REVIEW operation for a short time, i
This can be done by further pressing the fast forward button or rewind button in the state shown in FIG.

For example, in the case of a review operation, it is sufficient to press the rewind button, which causes the rewind operation member 9 to descend. Same operation member 9
The lower end first comes into sliding contact with the inclined surface 31 of the interlocking member 30, and moves the interlocking member 30 to the left. At this time, the operation selection member 3
5 is pushed around by the locking protrusion 34 of the interlocking member 30 to position the engagement step 3r below the bending piece 23. Subsequently, the lower end of the rewinding operation member 9 is connected to the inclined surface 25 of the second locking member 16.
sliding into contact with. At this time, since the engagement step portion 3r is located below the bending piece 23, the second locking member 16 moves to the left, but at the same time, the interlocking member 30 also moves to the left, causing the unwinding. The stopper pawl 33 comes into contact with the regeneration operation member 11 from the right side before the lower end of the operation member 9 is removed from the inclined surface 25 (see FIG. 6). Therefore, the rewind button cannot be pushed any further, and the rewind operation member 9 cannot be locked with the locking pawl 25a of the second locking member 16. Therefore, the review operation is performed only while the rewind button is pressed, and when the rewind button is released, the playback operation state is resumed.
The location of key operation is exactly the same. Next, if the playback or review operation must be performed for a relatively long time, the user may press the fast forward or rewind button while pressing the playback button deeper in the state shown in FIG.

For example, in the case of a review operation, it is sufficient to press the rewind button while pressing the playback button deeper as shown in Fig. r. In other words, by pushing the playback button deeper, the stopper pawl 33 of the interlocking member 30 can be released from the contact with the playback operation member 11, and the rewind operation member 9 can be lowered sufficiently, as shown in FIG. It can be locked to the locking claw 25a of the second locking member 16 as shown in FIG. Therefore, in this case, even if the rewind button is released, the single review state is maintained. In this way, the magnetic tape is rewound at high speed, and when the recorded portion of the song that has been played so far passes the recorder playback head 11, the same head 17
The unrecorded portion of the tape is detected and a predetermined detection signal is generated. This detection signal causes the magnetic plunger 44 to
is energized, and the movable piece 44a moves to the position shown by the imaginary line in FIG. As a result, the bent piece 43a of the slide plate 43 pushes the release lever 39 to the imaginary line position, and the rotational force of the flywheel 41 is applied to the release lever 39 via the drive pin 42.
, and the release lever 39 powerfully moves the contact piece 29 of the second locking lever 16 to the left. This movement of the locking lever 16 releases the lock on the rewind operation member 9, and the rewind button returns to the stop position to enter the playback operation state. Note that the configuration shown in FIG. 4 also functions as an automatic stop device.

That is, in the playback operation state, the unrecorded portion from the end of a specific song until the start of the next song is recorded on the playback head 1r.
When detected, the magnetic plunger 44 is energized, the release lever 39 moves into the orbit of the first drive pin 42, and the lever 39 receives the rotational force of the flywheel 41 to move the second locking member 16 to the left. Move to. However, in the regeneration operation state, the operation selection member 35 is set so that the engagement step portion 37 is in the first position.
Since the second locking member 16 is located at a position opposite to the bent piece 23 of the locking member 15, when the second locking member 16 moves to the left, the first locking member 15 also moves in the same direction. The regeneration operation member 11 is released from the lock and brought to a stopped state.
As described above in detail with reference to the illustrated embodiments, the operation switching device of the present invention includes a first locking member 15 that locks the self-returning regeneration operation member 11 in the pushed position, and a self-returning fast forwarding or winding A second locking member 16 that selectively locks the return operation members 10 and 9 in the push-in position, and a fast forward or rewind operation member 1
When the playback operation member 11 is locked to the first locking member 15 in conjunction with the pushing movement of the buttons 0 and 9, the fast forward or rewind operation members 10 and 9 are locked to the second locking member 16. By contacting the playback operation member 11 and prohibiting the pushing movement of the fast forward or rewind operation members 10 and 9 before the playback operation member 11 is pressed, the playback operation member 1 is pushed beyond a predetermined locking position.
interlocking member 3 that is released from the contact state with respect to 1 and enables the fast forward or rewind operating members 10, 9 to move to the locking position;
0.

Therefore, if you press only the fast forward or rewind button when pressing the fast forward or rewind button, you can maintain the queue 1 or review 1 state only while pressing these buttons, or press the play button more deeply. By pressing the fast-forward button or the rewind button, these buttons can be locked in the pushed-in position, making it possible to provide an operation switching device for a tape recorder that achieves the desired effect with an extremely simple configuration.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view showing the mechanical part of a tape recorder, Fig. 2 is an exploded front view showing the push button mechanism, and Fig. 3 The figure is a front view of the main part of the push button machine, Fig. 4 is a plan view showing the automatic release mechanism, Fig. 5 is a front view of the main part of the push button mechanism showing the reproducing operation state, and Fig. 6 is a locking of the rewind operation member. Figure R is a front view of the main part of the push button mechanism showing a state in which the rewind operation member is locked and the review operation is performed; FIG. 9... Rewind operation member, 10... Fast forward operation member, 11... Playback operation member, 15...
...First locking member, 16...Second locking member, 30...Interlocking member.

Claims (1)

[Claims] 1. A plate-shaped first locking member that locks a self-returning type playback operation member in the push-in position; A plate-shaped second locking member that selectively locks in the pushed-in position, and an interlocking member that is placed overlapping the first and second locking members and is biased in one direction. The interlocking member is located on each push-in operation line of the fast-forwarding and rewinding operating members, and when the fast-forwarding or rewinding operating member is pushed in, the interlocking member slides into contact with the fast-forwarding or rewinding operating member and biases the interlocking member in a counter-biasing manner. When the interlocking member is moved in the opposite biasing direction by a pushing operation of the fast forward or rewind operating member with the playback operating member being locked in the first locking member. a stopper portion that comes into contact with the playback operation member to limit the amount of movement of the interlocking member and prevents the fast forward or rewind operation member from being locked by the second locking member; When the first locking member is locked, the fast forwarding or rewinding operation is enabled only while the fast forwarding or rewinding operation member is pushed in, and the playback operation member is excessively pushed beyond a predetermined locking position. 1. An operation switching device for a tape recorder, characterized in that the abutting state between the stopper portion and the playback operation member is released by pressing the stopper portion and the playback operation member, thereby making it possible to move the fast forward or rewind operation member to a locking position.