JPH0319068Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an operating lever mechanism that is operated to control the movement state of a recording medium (for example, a magnetic tape) in a recording/reproducing device such as a tape recorder. .

BACKGROUND TECHNOLOGY AND PROBLEMS In tape recorders that use magnetic tape, during recording and playback operations, the magnetic tape is
A forward-feeding state of a magnetic tape that causes it to run forward at a speed suitable for normal recording or playback, a forward fast-forwarding state of a magnetic tape that causes it to run forward at high speed, and a magnetic tape that causes it to run in a rewinding direction at a high speed. The tape is in a state in which various tape feeding operations are performed, such as a rewinding and feeding state. These various tape feeding states are controlled by a plurality of operating levers connected to each of a plurality of operating buttons that are operated according to the desired tape feeding state, and these operating levers are moved as appropriate. It is selectively engaged via an operating lever mechanism configured to be locked in one operating position or unlocked in a particular operating position.

FIG. 1 shows an example of such an operating lever mechanism in a conventionally proposed tape recorder. In this example, a forward operating lever 1 is operated to take a forward forwarding state, a rewind operating lever 2 is operated to take a rewinding state, and a fast forwarding lever 2 is operated to take a forward fast forwarding state.
A forward operating lever 3 and a stop operating lever 4 which is operated to release the locked state of these operating levers 1, 2 and 3 at a specific operating position.
is provided. These operating levers 1 to 4
are movable in the pushing operation direction a and the opposite direction, and are biased in the opposite direction to the pushing operation direction a by springs 5, 6, 7, and 8, respectively. When it is not pushed in, it assumes a normal position as shown by the solid line in FIG. The operation levers 1 to 4 are provided with lock pins 1a, 2a, 3a and 4a, respectively.

In addition, a rewind operation lever 2, a fast forward operation lever 3, and a stop operation lever 4 are also provided.
A lock plate 9 that engages with the push-in operation direction a and a lock plate 10 that is stacked on this lock plate 9 and engages with the forward operation lever 1 and the stop operation lever 4 are individually moved in a direction perpendicular to the push-in operation direction a. These lock plates 9 and 10 are biased to the left in FIG. 1 by springs 11 and 12, respectively.

The lock plate 9 has three arm parts 13, 14 and 15.
(In FIG. 1, the arm portion 15 is located below the lock plate 10), and these arm portions 13, 1
4 and 15 are provided with inclined portions 13a, 14a, and 15a, respectively, and arm portions 13 and 14 are provided with inclined portions 13a, 14a, and 15a, respectively.
are provided with concave holding portions 13b and 14b, respectively. On the other hand, the lock plate 10 has two arm parts 16 and 17.
are provided with inclined portions 16a and 17a, and further, the arm portion 16 is provided with a concave holding portion 16b.

With this configuration, for example, when the forward operating lever 1 is pushed in from the normal position, the lock pin 1a is pressed against the arm portion 16 of the lock plate 10.
The lock plate 10 is moved in a state in which it is in contact with the inclined portion 16a of the lock plate 10, thereby moving the lock plate 10 to the right, as shown by the dashed line in FIG. 1, against the biasing force of the spring 12. The position of the holding portion 16b of the arm portion 16 is reached. At this time, the lock plate 10 is moved leftward by the spring 12, and the lock pin 1a engages with the holding portion 16b of the arm portion 16.
As a result, the forward operation lever 1 is locked at the push-in position, and the magnetic tape is fed in the forward direction.

Further, when the rewind operation lever 2 is pushed in, the lock pin 2a is pushed into the arm portion 1 of the lock plate 9.
The lock plate 9 is moved in a state where it is in contact with the inclined part 13a of the arm part 13, and the lock plate 9 is moved to the right against the biasing force of the spring 11, and reaches the position of the inclined part 13b of the arm part 13. At this time, the lock plate 9 is moved to the left by the spring 11, and the lock pin 2a is moved to the left by the spring 11.
It engages with the inclined portion 13b of the arm portion 13. As a result, the rewind operating lever 2 is locked at the push-in position, and the magnetic tape is rewinded and fed.

When the fast forward operation lever 3 is pushed in, the locking pin 3a similarly engages with the holding portion 14b of the arm portion 14 and is locked in the pushed-in position, thereby fast forwarding the magnetic tape in the forward direction. .

The locked state of these operating levers 1, 2, or 3 in the pushed-in position is such that when the stop operating lever 4 is pushed in, the locking pin 4a is connected to the inclined portion 15a of the arm portion 15 of the locking plate 9 and the locking plate 10.
The lock plates 9 and 10 are released by moving the lock plates 9 and 10 as shown by the dashed lines in FIG.

Next, the forward operation lever 1 is moved to the lock plate 1.
When the rewind operation lever 2 is locked in the pushed-in position by the lock plate 9, the playback circuit system changes from the forward feeding state of the magnetic tape to the operating state. While this state is maintained, the magnetic tape is brought into a rewinding and forwarding state. In this case, since the playback circuit system is operating, the signal recorded on the magnetic tape by the playback head Hd, for example, a signal representing a musical song (hereinafter simply referred to as a song), is read, and the song interval detection circuit reads the signal recorded on the magnetic tape by the playback head Hd. 18. When the playback head Hd is located between songs recorded on the magnetic tape, that is, in a non-recorded portion of the magnetic tape, a pulse signal is obtained at the output terminal of the song interval detection circuit 18. and is supplied to the base of transistor 19. As a result, the current from the power supply +B is supplied to the drive section 20a of the plunger 20 through the transistor 19, thereby causing the plunger 2
0 movable part 20b is attracted. Here, one end of the movable part 20b of the plunger 20 is coupled to the end of the lock plate 9, and therefore, the lock plate 9 is
When a song interval on the magnetic tape is detected, the plunger 20 moves it to the right. As a result, the rewind operating lever 2 is unlocked at the pushed-in position and returns to its normal position. In this case, the forward operation lever 1 is kept locked in the push-in position, so the magnetic tape is once again fed in the forward direction, and playback starts from the beginning of the song after the song interval has been detected. An automatic song interval detection operation is performed.

Also, the forward operation lever 1 is locked on the lock plate 10.
Similarly, when the fast forward operation lever 3 is locked at the pushed-in position by the lock plate 9, the fast-forward operating lever 3 is locked at the pushed-in position. When the song interval is detected, the fast forward operation lever 3 is unlocked at the push-in position and returns to the normal position, and playback starts from the beginning of the song after the song interval is detected. is performed, and automatic song interval detection is performed.

By the way, when the forward operation lever 1 is locked in the push-in position, the operator
If only the forward operation lever 3 or the rewind operation lever 2 is pushed in, the magnetic tape can be fast-forwarded in the forward direction or rewinded while the reproducing circuit system remains in operation. An operation called so-called queue playback or review playback is performed. To this end, when the forward operating lever 1 is locked in the pushed-in position, it is required that the fast-forward operating lever 3 or the rewind operating lever 2 is not locked in the pushed-in position even if it is pushed in. be done.

However, in this example, the rewind operating lever 2 and the fast forward operating lever 3
is configured so that when it is pushed in, it is always locked at the pushed-in position by the lock plate 9, so such queue playback or review playback operations cannot be performed. Therefore, in an example of a conventional tape recorder that is capable of performing automatic song interval detection, cue playback, and review playback, an operating lever mechanism as shown in FIG. 2 is used. It is used.

The example of the conventional operating lever mechanism shown in FIG. 2 has parts similar to those shown in FIG. 1, such as each operating lever and the lock pins and springs provided thereon. Such parts are shown with the same reference numerals as those in FIG. 1, and detailed explanation thereof will be omitted.

In this example, the rewind operating lever 2 and the fast forward operating lever 3
, when they are pushed in individually,
a locking plate 30 for locking in the push-in position;
A locking plate 31 is provided for locking in the pushed-in position when each is pushed in during the automatic song interval detection operation. The lock plate 30 is biased toward the left in FIG. 2 by a spring 32, and has four arm portions 33, 34, 35, and 36, and these arm portions 33-36 are They are engaged with the lock pin 4a of the stop operation lever 4, the lock pin 1a of the forward operation lever 1, the lock pin 2a of the rewind operation lever 2, and the lock pin 3a of the fast forward operation lever 3, respectively. As a result, in the example shown in FIG.
When the lever is locked in the push-in position, the forward operation lever 1 and the rewind operation lever 2 are activated in the same way.
and the fast forward operating lever 3,
They are locked in the pushed-in position by arms 34, 35 and 36 of locking plate 30, respectively. In this case, when the forward operation lever 1 is locked in the push-in position, the lock plate 30 is locked as shown in FIG.
is shifted to the right so that even if the rewind operating lever 2 and the fast forward operating lever 3 are pushed in, they will not be locked in the pushed-in position by the lock plate 30. Therefore, queue playback and review playback operations can be performed.
The locked state of each of the operation levers 1 to 3 at the pushed-in position is released by pushing the stopper operation lever 4 and moving the lock plate 30 to the right by its lock pin 4a.

On the other hand, the lock plate 31 is placed over the lock plate 30, and is biased toward the right in FIG. 2 by a spring 37. And this lock plate 31
has two arms 38 and 39, and these arms 38 and 39, as shown in FIG.
Normally, even if the rewind operation lever 2 or the fast forward operation lever 3 is pushed in,
It is placed in such a position that it does not come into contact with the respective lock pins 2a or 3a. In addition, the lock plate 31
A protrusion 40 is provided at one end, and the lock plate 31 is engaged with the protrusion 40.
A plunger 41 is disposed to suction and move the to the left in FIG. The plunger 41 is
It is composed of a driving part 41a and a movable part 41b whose one end is coupled to the protruding part 40. When the current from the power supply +B is supplied to the driving part 41a, the driving part 41a
attracts the movable part 41b, and as a result, the lock plate 3
1 to the left.
The current supply to the drive section 41a is controlled by a switch group and a song interval detection circuit 18, which will be described below.

A switch 42 is connected between the drive unit 41a of the plunger 41 and the power supply +B and is turned on when automatic song interval detection operation is instructed and turned off at other times.
and rewind operation lever 2 or fast
The forward operation lever 3 is pushed in, and its lock pin 2a or 3a is pushed into the arm portion 3 of the lock plate 31.
A switch 43 is turned on when the lever reaches a position where it can be engaged with the lever 8 or 39, and is turned off at other times, and a switch 43 is turned on when the forward operation lever 1 is locked in the push-in position and turned off at other times. Further, a switch 45 is provided, which is turned on when the stop operating lever 4 is in a normal position where it is not pushed in, and turned off when it is pushed in. Also, switch 4
A transistor 19 having a base connected to a song interval detection circuit 18 is connected between the connection point between the drive section 41a of the plunger 41 and the earth.
Now, as shown in FIG. 3, the forward operating lever 1 is locked in the push-in position, that is,
While switches 44 and 45 are turned on, switch 42 is turned on to perform automatic song interval detection operation.
is turned on and one of the rewind operation lever 2 and the fast forward operation lever 3, for example, the rewind operation lever 2 is pushed in and the switch 43 is turned on, the current from the power supply +B drives the plunger 41. It is supplied to the section 41a.
As a result, the movable portion 41b of the plunger 41 is attracted, and the lock plate 31 is moved to the left as shown by the dashed line in FIG. For this reason, the lock pin 2 of the rewind operation lever 2
a engages with the arm portion 38 of the lock plate 31, and the rewind operating lever 2 is locked in the push-in position. As a result, the magnetic tape is changed from the forward speed state to the rewinding and feeding state while the reproducing circuit system remains in the operating state. And the playback head
Between songs on which HD is recorded on magnetic tape,
That is, when the magnetic tape is located at a non-recorded portion, a pulse signal based on the song interval detection is obtained at the output terminal of the song interval detection circuit 18 and is supplied to the base of the transistor 19. As a result, the current from the power supply +B flows to the ground through the transistor 19, and the current supply to the drive section 41a of the plunger 41 is cut off. Therefore, the lock plate 31 is returned to its original position by the spring 37, and the rewind operating lever 2 is released from the lock at the pushed-in position.
Return to normal position. As a result, the magnetic tape is once again fed in the forward direction, and reproduction is performed from the beginning of the song after the song interval has been detected. In addition, when performing the automatic song interval detection operation, the forward operation lever 1
A similar operation is performed when the fast forward operating lever 3 is pushed in while the fast forward operating lever 3 is locked in the pushed-in position.

As described above, the operating lever mechanism shown in FIG. Locking the fast forward operating lever 3 in the pushed-in position and releasing it from the locked state are performed using two locking plates, which has the disadvantage of complicating the mechanical structure. be.

Purpose of the invention In view of the above points, the present invention forms a part of a tape recorder, has a relatively simple configuration, and can perform normal recording and playback operations by operating it.
An object of the present invention is to provide an operating lever mechanism that can take various tape feeding states required for each of queue playback operation, review playback operation, and automatic song interval detection operation.

Summary of the invention The operating lever mechanism according to the invention has first and second
a forward operating lever disposed to selectively take the operating position; a rewind operating lever disposed to selectively take the third and fourth operating positions;
A fast-forward operating lever disposed to selectively take the fifth and sixth operating positions, and a rewind operating lever or a fast-forward operating lever that is biased to take the third or fifth operating position, respectively. and a biasing member that moves the rewind operating lever or the fast forward operating lever from the third or fifth operating position to the fourth or sixth operating position against the biasing member. The plunger section is configured to include a plunger section that selectively takes an operating state held at the fourth or sixth operating position, and first and second switch sections that control the plunger section, and the first switch section is configured to perform forward operation. When the rewind operating lever or the fast forward operating lever is moved from the third or fifth operating position to the fourth or sixth operating position with the lever in the first operating position, the plunger portion When the rewind operating lever or the fast-forward operating lever is in an operating state in which it is held in the fourth or sixth operating position, and the forward operating lever is in the second operating position, the rewind operating lever is or the fast forward operating lever is moved from the third or fifth operating position to the fourth operating position.
Alternatively, when the plunger is moved to the sixth operating position, the plunger section is configured to take an operating state in which the rewind operating lever or the fast forward operating lever is not held in the fourth or sixth operating position, and , the second switch part is configured such that while the forward operating lever is in the second operating position, the rewind operating lever or the fast forward operating lever is in the third or fifth operating position.
When the operating position is shifted from the operating position to the fourth or sixth operating position, regardless of the state of the first switch section, the rewind operating lever or fast forward operating lever is moved to the fourth or sixth operating position on the plunger section. The device is configured to selectively take an operating state in which it is held in position. With this configuration, the forward operation lever, rewind operation lever, and fast forward operation lever have a relatively simple configuration using one plunger, and can perform queue playback operation, review playback operation, automatic song interval detection operation, etc. It can be operated to take various tape feeding states required for each of the above.

Embodiments The embodiments of the present invention will be explained in Figures 4 to 7 below.
This will be explained with reference to the figures.

FIG. 4 shows an example of the operating lever mechanism according to the present invention, and this example is applied to a tape recorder using magnetic tape.

In this example, the forward operation lever 5 is operated to take the forward direction feeding state of the magnetic tape.
0, a rewind operating lever 51 that is operated to put the magnetic tape in a rewinding state, a fast forward operating lever 52 that is operated to put the magnetic tape in a forward fast forwarding state, and these operating levers 50, 51. and a stop operating lever 53 which is operated to release the locked state at a specific operating position of 52. These operation levers 50, 51, and 52 are all movable in the push-in operation direction a' and the opposite direction, and are also moved in the push-in operation direction a' and the opposite direction by springs 54, 55, 56, and 57, respectively. are urged in the opposite direction, and when not pushed in, the guide slots 50a, 51a and 53a provided respectively
Due to the presence of pins 58, 59, 60 and 61 which engage with each other, a steady position is assumed as shown by solid lines in FIG.

Also provided is a locking plate 64 having arms 62 and 63 that engage the forward operating lever 50 and the stop operating lever 53. The lock plate 64 is movable in a direction perpendicular to the push-in operation direction a', and is biased to the left in FIG. 4 by a spring 65. The lock plate 64 is normally moved to the position shown by the solid line in FIG. Localized.

Switches 67 and 68 are provided in association with the forward operating lever 50 and the stop operating lever 53, respectively. The switch 67 is an engagement piece 50 provided at the tip of the forward operation lever 50.
The switch 68 is turned on and off by the tip of the stop operation lever 53. The switch 67 is connected to the forward operating lever 50.
The switch 68 is turned on when the stop operation lever 53 is not pushed in, and the switch 68 is turned off when the stop operation lever 53 is not pushed in.

A switch 77 related to the rewind operation lever 51 and the fast forward operation lever 52 is also provided, and when the rewind operation lever 51 or the fast forward operation lever 52 is pushed in, the switch 77 is turned on by its tip. and is off at other times.

Furthermore, a plunger 72 is installed. This plunger 72 is composed of a movable part 73 and a drive part 74, and the movable part 73 has an L
The support shaft 75 is formed at the bent part.
and is urged by a spring 76 to rotate in the counterclockwise direction c.
An adsorbed body 73a is provided at one end of the movable portion 73, and a lock pin 73b that engages with the timing lever 69 is provided at the other end. In the state shown in FIG. 4, this lock pin 73
b comes into contact with the side surface of the timing lever 69, and the rotation of the movable part 73 by the spring 76 is restricted. On the other hand, the drive unit 74 is specifically an electromagnet composed of a solenoid, for example, and is designed to generate a magnetic force that attracts the attracting object 73a provided on the movable unit 73 when energized. ing.

With this configuration, when the forward operating lever 50 is pushed in, the lock pin 50c provided on the forward operating lever 50
The arm portion 62 of the lock plate 64 moves while being in contact with the inclined portion 62a, and thereby the lock plate 64
After moving to the right in FIG. 4 against the biasing force of the spring 65, the arm 62 is engaged with the holding portion 62b of the arm portion 62, as shown by the dashed line in FIG. becomes. As a result, the forward operating lever 50 is locked in the pushed-in position. in this case,
Switch 67 is turned off.

When the stop operation lever 53 is pushed in in this state, the lock pin 53b provided on the stop operation lever 53 moves while being in contact with the slope 63a of the arm 63 of the lock plate 64. The lock plate 64 is then moved to the right as shown by the dashed line in FIG. As a result, the locked state of the forward operating lever 50 in the pushed position is released, and the forward operating lever 50 is released.
0 returns to the steady position. In this case, the switch 68 is turned on while the stop operating lever 53 is pushed in.

Next, a description will be given of a structure in which the rewind operating lever 51 and the fast forward operating lever 52 are locked in the push-in position and released from the locked state. The tip of the fast forward operating lever 52 is bent so as to overlap the tip of the rewind operating lever 51. Both operating levers 5
The tip portions of 1 and 52 have the same shape,
They form engaging portions 51b (FIG. 5) and 52b, respectively. The engaging portions 51b and 52b each include
Engagement protrusions 51c (FIG. 5) and 52c are provided.

A timing lever 69 is provided which engages with the engaging portions 51b and 52b provided on the rewind operating lever 51 and the fast forward operating lever 52 and responds to their movements.
The timing lever 69 is pivotally supported by a support shaft 70 and is urged by a spring 71 to rotate in the clockwise direction b. Normally, this timing lever 69 has a locking piece 69a at the tip of the engaging portion 51b of the rewind operating lever 51 and an engaging portion 52b of the fast forward operating lever 52.
Its rotation is restricted by contacting the tip of the

When the rewind operating lever 51 is pushed in, the engaging protrusion 51c of the rewind operating lever 51 engages the lock pin 73b provided on the movable part 73 of the plunger 72 at its inclined portion, as shown in FIG. It will be in a state where it matches. In addition, the tip of the engaging portion 51b of the rewind operation lever 51 allows
The locking piece 69a of the timing lever 69 is moved and comes into contact with the switch 77, and the switch 77 is turned on. At this time, when the drive section 74 of the plunger 72 is energized, the attracted object 73a provided on the movable section 73 is electromagnetically attracted to the drive section 74, as shown in FIG. 73 locks the lock pin 73b on the rewind operating lever 5.
It is held in a position where it is engaged with the first engagement protrusion 51c. As a result, the rewind operating lever 51 is locked against the biasing force of the spring 55 that tends to return the rewind operating lever 51 to its normal position.
On the other hand, if the drive section 74 of the plunger 72 is not energized at this time, the rewind operation lever 5
1, when the pushing force is no longer applied, the movable portion 73 of the plunger 72 is rotated against the force of the spring 76 to disengage the lock pin 73b and the engagement protrusion 51c and return to the normal position.

When the fast forward operation lever 52 is pushed in, the plunger 72 is energized and the lock pin 7 provided on the movable part 73 of the plunger 72 is energized in the same manner as the rewind operation lever 51.
3b is held in a position where it engages with an engaging protrusion 52c provided on the engaging portion 52b of the fast forward operating lever 52, and the fast forward operating lever 52 is locked in the push-in position;
When the plunger 72 is not energized and no pushing force is applied to the fast forward operating lever 52, a state is assumed in which it returns to its normal position.

FIG. 6 shows an example of a circuit for energizing the drive section 74 of the plunger 72. As shown in FIG. In this example, a terminal 80 connected to the power supply +B is connected to the drive unit 74 through a parallel connection between switches 67 and 77 connected in series and a switch 81 that is turned on during the automatic song interval detection operation. connected to one end of the drive unit 7
The other end of 4 is grounded. Further, one end of the driving section 74 is connected to the collector of the transistor 82, and the emitter of the transistor 82 is grounded. The base of the transistor 82 is connected to the output terminal of a song interval detection circuit 83, which is connected to the output terminal of the reproduction head Hd. Further, a switch 6 is connected in parallel with the drive section 74.
8 are connected.

Next, referring to FIG. 4, a drive mechanism for running the magnetic tape will be described. The magnetic tape runs on a supply reel stand 90 and a take-up reel stand 91.
and a capstan (not shown) are driven. In the example shown in Fig. 4, the capstan flywheel 9 is integrated with the capstan.
2 is rotated, for example, in a counterclockwise direction by a motor 93 via a belt. For example, when the forward operating lever 50 is pushed in and locked in the pushed-in position, an idler 94 that responds to this moves the capstan flywheel 9 as shown by a dashed line.
2 and the take-up reel stand 91. As a result, the take-up reel stand 91 is rotated counterclockwise, and the magnetic tape is fed in the forward direction. Further, when the rewind operating lever 51 is pushed into a position where it can be locked, the idler 95 responding to this engages with the large diameter portion 92b of the capstan flywheel 92, and as a result, the idler 95 rotates. The movable supply reel stand 90 is rotated clockwise at high speed, and the magnetic tape is run in a rewinding and feeding state. Furthermore, when the fast forward operating lever 52 is pushed to a position where it can be locked, an idler 96 responsive to this causes the capstan flywheel 92 to
As a result, the take-up reel stand 91 is rotated counterclockwise at high speed, and the magnetic tape is fast forwarded in the forward direction. be exposed. Note that if the rewind operation lever 51 or the fast forward operation lever 52 is pushed in with the forward operation lever 50 locked in the push-in position, running in the rewind feed state or forward fast forward state will be reversed. This is done in priority to running in the direction feed state.

In the example of the operating lever mechanism according to the present invention using the configuration shown in FIG. 4 and the circuit shown in FIG. 6 as described above, when a normal recording or reproducing operation is performed, the forward The operating lever 50 is pushed in and locked in the pushed-in position by the lock plate 64. This causes the magnetic tape to be fed in the forward direction. At this time, switch 67
is turned off. In addition, when rewinding the magnetic tape, the forward operation lever 50
With the rewind operating lever 51 in the normal position, the rewind operating lever 51 is pushed in, and the switch 77 is turned on as shown in FIG. In this case, switch 6
Since the switch 7 is turned on and the switches 68 and 81 are turned off, the drive section 74 of the plunger 72 is energized. As a result, the rewind operating lever 51 is locked in the pushed-in position by the plunger 72. As a result, the magnetic tape is rewinded and fed. Further, when fast forwarding the magnetic tape is performed, the fast forward operating lever 52 is pushed in and the switch 77 is turned on with the forward operating lever 50 in its normal position. In this case, as in the case where the rewind operating lever 51 is pushed in, the drive section 74 of the plunger 72 is energized, the fast forward operating lever 52 is locked in the pushed position,
The magnetic tape is put into forward fast forward mode.

Next, when a cue playback operation is to be performed, the forward operating lever 50 is locked in the pushed position, so the switch 67 is turned off, and the switches 68 and 81 are turned off. state, fast forward operation lever 5
2 is pushed in. This turns on the switch 77, but since the switch 67 is off, the drive section 74 of the plunger 72 is not energized. As a result, the fast-forward operation lever 52 is not locked in the push-in position by the plunger 72, and takes the push-in position only while the push-in force is being applied. The fast forward operating lever 52 returns to its normal position and enters the forward forward feeding state of the magnetic tape when the pushing force is no longer applied.

Also, when a review playback operation is performed,
The rewind operating lever 51 is pushed in with the forward operating lever 50 locked in the pushed-in position, the switch 67 being turned off, and the switches 68 and 81 being turned off. In this case as well, switch 77 is turned on, but switch 67 is turned off, so
The drive portion 74 of the plunger 72 is not energized. As a result, the rewind operation lever 51 is not locked at the push-in position by the plunger 72.
Only while a pushing force is applied, the pushing position is taken. Only while a pushing force is applied to the rewind operating lever 51, the magnetic tape is rewinded and fed, and the rewind operating lever 51 is
When the pushing force is no longer applied, it returns to its normal position,
The magnetic tape enters the forward feeding state.

Furthermore, when the automatic song interval detection operation is performed, the switch 81 is turned on while the forward operation lever 50 is locked at the push-in position, and the switch 67 is turned off. The operating lever 51 or the fast forward operating lever 52 is pushed in. At this time, the switch 68 is turned off, and the switch 8
1 is turned on, the drive section 74 of the plunger 72 is energized. Therefore, the rewind operation lever 51 or the fast forward operation lever 52 is locked in the pushed position by the plunger 72, and the magnetic tape is put into a rewinding state or a forward fast forwarding state. At this time, the playback circuit system is in the operating state and enters the song interval detection state, and the playback head Hd detects the gap between the songs recorded on the magnetic tape, that is, the unrecorded portion of the magnetic tape. When the song interval detection circuit 83 is located at
A pulse signal, which is a song interval detection output, is obtained at the output end of the circuit and is supplied to the base of the transistor 82.
As a result, the transistor 82 is turned on, and the current from the power supply +B flows to the ground through the switch 81 and the transistor 82, and the plunger 72
The current supply to the drive unit 74 is cut off. Therefore, the rewind operation lever 51 or the fast forward operation lever 52 is connected to the plunger 7.
2, the locked state at the push-in position is released and the device returns to the normal position. As a result, after the song interval is detected, the magnetic tape is automatically fed in the forward direction.

In any case, when the stop operation lever 53 is pushed in and the switch 68 is turned on, the drive section 74 of the plunger 72 is connected to the power source +.
Since the current from B stops flowing, the locked state of the rewind operation lever 51 or the fast forward operation lever 52 at the pushed position by the plunger 72 is released.

FIG. 7 shows another example of a circuit for energizing the drive section 74 of the plunger 72. In this example, the switch 68' operates in the opposite manner to the above-described switch 68, and is normally turned on and turned off when the stop operating lever 53 is pressed. The switch 67' also operates in the opposite manner to the above-described switch 67, and is normally turned off and turned on when the forward operating lever 50 is pushed in. moreover,
The switch 81' has a movable contact that selects the contact to which the transistor 82 is connected when the automatic song interval detection operation is performed, and selects the grounded contact at other times.

When this circuit is used, the same operational results as when the circuit shown in FIG. 6 is used can be obtained. For example, when rewinding a magnetic tape is performed and the forward operation lever 50 is in the normal position, when the rewind operation lever 51 is pushed in, the switches 68' and 77 are turned on, and the switch 67 is turned on. ′ is turned off, so
The driving portion 74 of the plunger 72 is energized, and as a result, the rewind operating lever 51 is locked in the push-in position by the plunger 72. Also, when a review playback operation is performed,
When the rewind operating lever 51 is pushed in while the forward operating lever 50 is locked in the pushed position, the switches 67', 68' and 7
7 is turned on, and the movable contact of switch 81' selects the contact connected to ground.
Therefore, the driving portion 74 of the plunger 72 is not energized, and the rewind operation lever 51 is not locked in the pushed-in position, but returns to its normal position when no pushing force is applied. Further, when the automatic song interval detection operation is performed and the rewind operating lever 51 is pushed in with the forward operating lever 50 locked in the pushed position, the switches 67', 68' and 77 are activated. At this time, the movable contact of the switch 81' is turned on, and at this time, the movable contact of the switch 81' is turned on.
Since the contact point to which 2 is connected is selected, the driving section 74 of the plunger 72 is energized until the song interval is detected and the transistor 82 is turned on. Therefore, the rewind operation lever 51
is locked in the pushed-in position by the plunger 72 until a song interval is detected. When the stop operation lever 53 is pushed in, the switch 68 is turned off and the drive section 74 of the plunger 72 is turned off.
No current from power supply +B flows through.

As described above, the operating lever mechanism according to the present invention applied to a tape recorder using magnetic tape can perform different modes required for various operations of the tape recorder by pushing each operating lever. This allows the tape to be fed.

It goes without saying that the operating lever mechanism according to the present invention may be applied to devices other than the tape recorder as described above.

Effects of the Invention As is clear from the above explanation, the operating lever mechanism according to the present invention has a relatively simple configuration including a plurality of operating levers and one plunger, and the plunger controls and releases the position of the operating lever. This lever is designed to enable each control lever to assume the required operating position or operating state by utilizing the action of the lever, such as forward control lever, rewind control lever, fast forward control lever. By operating the and stop operation lever, in addition to normal recording and playback operations, tape rewinding operations, and tape fast forwarding operations, the functions necessary for queue playback operation, review playback operation, automatic song interval detection operation, etc. An operating lever mechanism that can take various tape feeding states can be realized with a relatively simple configuration.

Further, in such a case, the operation for obtaining each tape feeding state may be performed by, for example, pushing the operation lever that takes the normal position into the push-in position, and locking it in the push-in position, or by not locking it. However, it is assumed that the pushing operation of the operating lever, the locking operation in the pushed-in position, and the releasing operation from the locked state in the pushed-in position can be performed easily and extremely reliably. This gives you a good operating feel.

[Brief explanation of the drawing]

1 and 2 are configuration diagrams showing a conventional operating lever mechanism, FIG. 3 is a diagram used to explain the operation of the conventional operating lever mechanism shown in FIG. 2, and FIG. A configuration diagram showing an example of the operating lever mechanism according to the invention, FIG. 5 is a diagram used to explain the operation of the example shown in FIG. 4, and FIG. 6 is a diagram showing the drive of the plunger used in the example shown in FIG. 4. FIG. 7 is a connection diagram showing another example of such a circuit. In the figure, 50 is a forward operation lever, 51 is a rewind operation lever, 52 is a fast forward operation lever, 53 is a stop operation lever, and 64
are lock plates, 67, 67', 68, 68', 77,
81 and 81' are switches, 69 is a timing lever, 72 is a plunger, 73 is a movable part, 74 is a drive part, and 83 is a song interval detection circuit.

Claims (1)

[Claims for Utility Model Registration] A forward operating lever arranged to selectively take the first and second operating positions, and a rewind operating lever arranged so as to selectively take the third and fourth operating positions. and a fast-forward operating lever arranged to selectively take the fifth and sixth operating positions; and the rewind operating lever or the fast-forward operating lever.
a biasing member that biases the forward operating lever to assume the third or fifth operating position, respectively;
When the forward operating lever is moved from the third or fifth operating position to the fourth or sixth operating position against the biasing member, the rewind operating lever or the fast forward operating lever is moved from the third or fifth operating position to the fourth or sixth operating position. a plunger portion that selectively assumes an operating state held in a fourth or sixth operating position; and when the forward operating lever assumes the first operating position, the rewind operating lever or the fast forward operating lever is 3rd above
Alternatively, when the fifth operating position is shifted to the fourth or sixth operating position, the plunger portion holds the rewind operating lever or the fast forward operating lever at the fourth or sixth operating position. When the operating state is taken and the forward operating lever assumes the second operating position, the rewind operating lever or the fast forward operating lever changes from the third or fifth operating position to the above. When the plunger is moved to the fourth or sixth operating position, the plunger section takes an operating state in which the rewind operating lever or the fast forward operating lever is not held at the fourth or sixth operating position. a first switch portion, and while the forward operating lever assumes the second operating position, the rewind operating lever or the fast forward operating lever moves to the third operating position;
Or when the fifth operating position is shifted to the fourth or sixth operating position, the first
A second method for selectively causing the plunger section to take an operating state in which the rewind operating lever or the fast forward operating lever is held at the fourth or sixth operating position, regardless of the state of the switch section. An operating lever mechanism consisting of a switch part and.