JPS5813476Y2 - Tape recorder operating lever device - Google Patents

Description

[Detailed description of the invention] This invention has a movable sliding operation button, and by moving the sliding operation button in one direction from the position where the stop operation state is set, each operation state of playback and rewind is set. is set in this order, and by moving in the other direction from the position where the rewind operation state is set, each operation state of playback or stop is set, and in each operation state of playback or rewind, f is connected to the rotational force generating means. The present invention relates to an operating lever device used in a tape recorder that selectively brings an idler pulley into contact with one or the other of a pair of reel shafts to selectively transmit rotational force to one or the other of the pair of reel shafts.

In conventional devices of this kind, the idler pulley is manually operated to bring it into pressure contact with the reel stand of the supply reel shaft, so the pressure force is not constant, and if the pressure force is too strong, the idler pulley There was a problem in that the load on the drive motor that rotates the reel increased, causing the motor to heat up or be damaged.In addition, if the pressure contact force was too weak, the rotational force could not be reliably transmitted to the reel shaft. .

This invention was made with the aim of solving the above problems.The purpose of this invention is to have a sliding operation button that can be moved in one direction and the other direction, and that the sliding operation button is in a stopped operation state. By moving in one direction from the setting position, each operation state of rewind and rewind is set in this order, and by moving in the other direction from the position where the rewind operation state is set, playback is performed.

Each operation state of stop is set, and in each operation state of playback or rewinding, the idler pulley connected to the rotational force generating means is selectively brought into contact with one or the other of the pair of reel shafts. In a tape recorder operating lever device used in a tape recorder that selectively transmits rotational force to one or the other of It is an object of the present invention to provide a control lever device which has a simple structure, has reliable and good operability, and can ensure transmission of rotational force to a reel shaft without damaging a motor.

Hereinafter, an embodiment in which the operating lever device of this invention is applied to a dictation recorder, which is a type of tape recorder, will be described with reference to the drawings.

1 to 3 show the appearance of a gamma dictation recorder 11 to which this invention is applied, and FIG. 1 is a side view.

FIG. 2 is a plan view, and FIG. 3 is a front view.

This dictation recorder 11 has a lid 12 hingedly connected to the front half of its upper surface, and the lid 12 is opened to load or remove a tape cassette from a cassette loading section.

Further, the lid 12 is provided with a transparent window 12a, and this window 1
The cassette mounting side portion can be observed from the outside through 2a.

On the front of the dictation recorder 11 are a volume control knob 13° and a built-in microphone net 14. An earphone connection jack 15, an external microphone connection jack 16, etc. are provided.

In addition, a large number of small holes 17 are provided in the rear half of the upper surface of the dictation recorder 11.
The audio output reproduced by the reproduction magnetic head is emitted from a speaker (not shown) housed on the back side of the small hole 17.

Next, the operating lever device 18 provided inside the dictation recorder 11 will be explained based on FIGS. 4 to 6.

First, in FIG. 4, numerals 19 and 20 indicate a head support lever and a pinch roller support lever, respectively.

These support levers 19 and 20 are stacked with the shorter pinch roller support lever 20 on top, and one end of each corresponding to the other end in this invention is rotatably supported on a common shaft 21. There is.

A magnetic head 22 is fixedly attached to one end of the upper surface of the head support lever 19, that is, on the rotation end side, and a magnetic head 22 is fixedly attached to one end of the upper surface of the pinch roller support lever 20, that is, on the rotation end side. A pinch roller 23 is rotatably attached.

In the figure, reference numeral 24 denotes an operating lever whose intermediate portion is rotatably supported on a shaft 25, and a locking pin 26 is protruded from one rotating end corresponding to the other end in this invention. Further, a spring hook 27 is made to protrude from the tip.

The locking pin 26 has an abutting piece 19a protruding forward from the rotating end of the head support lever 19, and an abutting piece protruding forward from the rotating end of the pinch roller support lever 20. 20a are brought into contact with each other.

Further, reference numerals 28 and 29 in the figure are first and second tension springs, respectively, and the first tension spring 28 is provided at the rotation end of the locking pin 26 and the head support lever 19, and the T-spring hangs. 30, the second tension spring 29 is connected to the spring hook 27, and the spring hook 31 provided at the rotating end of the pinch roller support lever 20 constitutes a contact piece in this invention. Support lever 19
The head support lever 190 is in contact with the head support lever 190 from the counterclockwise direction.

A hook is passed between the spring hook 31 and the spring hook 31.

A switch operating protrusion 19b is provided at the rotating end of the head support lever 190 to protrude upward in the figure, and another contact piece in this invention is provided on the lower surface side of the rotating end of the same bar 190. A cut-and-raised piece 19c is formed which is cut and raised downward.

In the figure, reference numeral 32 denotes an intermediate lever, which has an abbreviated shape, and its bent portion is rotatably supported by one fixing pin 330, which will be described later.

One end side of this intermediate lever 32 is adapted to abut against the locking pin 26 of the operating lever 24.

In the figure, reference numeral 34 denotes an operation plate, on the negative side of which a sliding operation button 35 is fixed, and the sliding operation button 35 is exposed on the outer surface of the dictation recorder 11.

The operation plate 34 has elongated holes 36 at three locations, and a fixing pin 33 is inserted into each of the elongated holes 36, so that the sliding operation button 35 can be manually moved forward and backward along the outer surface. It has become.

The operation plate 34 has the operation lever 24 in the middle part thereof.
In this invention, there is also a stopper pin 37 that abuts on the other end corresponding to one end of the intermediate lever 3 at the lower end shown in the figure.
A pressing pin 38 that comes into contact with one end of each of the pins 2 is provided in a protruding manner.

Further, a step portion 39 is formed at the middle gAts of the operation plate 34, a pressing protrusion 40 is formed at the upper end of the operation plate 34 in the drawing, and an engaging tongue piece 41 is formed on the side of the pressing protrusion 40. ing.

There are four click holes 42 in the middle part of the operation plate 34.
43, 44, and 45 are arranged in a straight line from the top to the bottom in the drawing.

The click hole 42 at the end is smaller than the other three click holes 43 to 45.

On the other hand, the fixed base plate 46 of the dictation recorder 11 is provided with a hole 47 on its negative side, as shown in FIG. 5, and a ball 48 is inserted into the hole 47.

One ball 48 is partially connected to the click holes 42 to 4 by a leaf spring 49 whose one end is fixed to the board 46.
5 is selectively pressed against one of them.

Note that the small-diameter click hole 421 ball 48 and leaf spring 49 constitute a holding force reduction mechanism, and the other click holes 43 to 45
, together with the ball 48 and the leaf spring 49, constitute each click stop mechanism.

Returning to FIG. 4 again, reference numeral 50 in the figure is an interlocking lever whose one end is rotatably supported on a shaft 51, and at the upper end in the figure, which serves as the pivot point, there is a pair of abutting pieces. 52 and 53, and also has another abutting piece 54 at the lower end in the figure.

The contact piece 52 is located in front of the pressing protrusion 40 of the operation plate 34.

In the figure, reference numeral 55 denotes an erroneous erasing prevention lever. The erroneous erasing prevention lever 55 is rotatably supported at its middle part on a shaft 56, and its upper end in the figure faces a lug provided on the side of the loaded tape cassette C. It has a lug detection pawl 57, and stopper portions 58 and 59 are formed at the lower end and the middle side in the drawing, respectively.

A deployment spring 60 is wound around the shaft 56.
Both ends of the expansion spring 600 are hooked between the rotating end of the interlocking lever 500 and the lower end of the accidental erasure prevention lever 55 as shown in the figure, thereby elastically integrating the levers 50 and 55.

Further, a tension spring 61 is hooked between the shaft 56 and the other end of the operating lever 24.

In the figure, 62 is a cue lever, and the middle part of this cue lever 62 is rotatably supported by one of the fixing pins 330.

A bifurcated pressing piece 63at63b is formed at the upper end of the cue lever 62 in the drawing, and a pressing piece 64 is formed at the lower end in the drawing. The piece 64 is the intermediate lever 32
It is positioned opposite the other end.

Also. A locking piece 65 is provided on one side between the pressing pieces 63a, 63b of the lever 62 and the fixing pin 33.

The cue lever 62 is biased to rotate clockwise by a tension spring 66, and can be rotated by manually pressing a cue button 67 attached to the upper side in FIG. 4 from outside the dictation recorder 11. It looks like this.

In the figure, 68 is pivotally supported by an FF lever so that it can rotate freely once.

It is rotated and biased clockwise by a tension spring 69, so that the upper surface in FIG. 4 is held in contact with the shaft 70.

Further, an FF button 71 is attached to one end of the FF lever 68, and when the FF button 71 is pressed from outside the dictation recorder 11, the FF lever 68 rotates counterclockwise.

A switch operating piece 72 is provided at one end of the FF lever 68, and locking pieces 73 and 74 bent downward are provided at the other end of the FF lever 68.

Note that 75 indicated by an imaginary line in FIG. 4 is a capstan shaft disposed at a position in front of the pinch roller 23.

Next, the drive mechanism 76 of this dictation recorder 11 will be explained based on FIG. 7.

77.78 in Figure 7 is. A pair of reel shafts are arranged symmetrically in front of the capstan shaft 75, and a reel stand 77a is provided at the lower end.

78a.

The reel shaft 77 on the left side of the figure is the tape winding side, and this is the board 46V? C rotatably supported on the shaft t, = IJ-ru stand 7
It is connected to the upper surface of 7a via a friction transmission mechanism.

The right reel shaft 78 is on the tape supply side, and is rotatably supported by one end of the tape end detection lever 79 and connected to the upper surface of the tarry stand 78a via a friction transmission mechanism.

The tape end detection lever 79 has a portion close to the reel shaft 78 fixed to the board 46 and rotatably supported on a shaft 80. A lever 81 is rotatably supported.

The swinging lever 81 is L-shaped, and its bent portion is pivotally supported by the tape end detection lever 79, and the hook is passed between the lever 79 and the tape end detection lever 79. rotationally biased.

The swing lever 81 has one end facing the inner peripheral surface of a flywheel 83 attached to the capstan shaft 75, and the other end facing the alarm microswitch SW1.

When the microswitch SW1 is turned on, an alarm sound generating device (not shown) emits an alarm sound indicating the end of the tape.

In the figure, reference numeral 84 indicates a tension spring that rotates and biases the tape end detection lever 79 counterclockwise, and reference numeral 85 indicates a deployment spring wound around the shaft 30.

One end of the expansion spring 85 is attached to the operating lever 24.
The locking pin 26 extends to a position in front of the locking pin 26.

Further, a semi-solid notch 86 is formed in a part of the inner peripheral surface of the flywheel 83.

Reference numeral 87 in the figure indicates a switching lever, and the upper end of the switching lever 87 in FIG. A first idler pulley 88 for rotation, and a relatively large diameter second idler pulley 89 for reverse rotation at an intermediate position.

Each is rotatably supported.

Further, a deployment spring 9 is provided at the lower end of the switching lever 87 in the drawing.
0 is attached.

One end of this spring 90 is connected to the operating lever 2.
It extends to a position in front of the locking pin 26 of No. 4.

Furthermore, the switching lever 87. A switch operation piece 91 is provided on the side near the shaft 70.

This switch operation piece 91 is placed above the switch operation piece 72 of the FF lever 68 .

A sub-switch SW2 is disposed at a lower position of both the switch operation pieces 91 and 720 in the drawing.

In FIG. 9, SW3 is a main switch, and this main switch SW3 is disposed in front of the switch operating protrusion 19b of the head support lever 19.

The main switch SW and the sub-switch SW2 are connected in parallel to a motor drive circuit (not shown), and when either one is turned on, the motor 92 as a rotational force generating means shown in FIG. 7 is rotated. It has become.

A pulley 93 is provided on the rotating shaft of the motor 92, and a pulley 94 is provided on the capstan shaft 75.

An endless belt 95 is provided between the pulley 93 and the flywheel 83, and an endless belt 96 is provided between the pulley 94 and the second idler pulley 89, which functions as a biasing means in this invention. However, each person has been given a fee.

The first idler pulley 88 having a small diameter comes into elastic contact with the endless belt 96 from the outside, and uses the tension of the endless belt 96, that is, the biasing force of the biasing means in this invention, to reel the reel of the take-up reel shaft 77. It is pressed against the stand 77a.

At this time, the switching lever 87 is close to one of the reel shafts 78, and the position of the switching lever 87 at this time is
7's first position.

SW4 shown in FIG. 12 is a cue switch, and this cue switch SW4 is disposed in front of the cue button 67.

This cue switch Kō. is connected to a discrimination signal recording circuit (not shown), and when the cue button 67 is pressed and turned on, the discrimination signal recording circuit is activated.

Next, the operation of this dictation recorder 11 will be explained.

First, this dictation recorder 11 can be operated by manually moving the sliding operation button 35 in one direction and the other direction.
You can stop, record, play, and rewind the tape.

Namely. In the state shown in FIG. 5 in which the click hole 44 of the operation plate 34 is engaged with the ball 48, the recorder 11 is in a stopped state, and the magnetic head 22 and pinch roller 23 are loaded as shown in FIG. It is located away from the magnetic tape 97 in the tape cassette C.

The positions of the pinch roller support lever 20 and the head support lever 19 at this time are defined as the first positions of the pinch roller support lever 20 and the head support lever 19.

In this state, the operating lever 24 is biased counterclockwise by the tension spring 61, and its rotation is restricted by contacting the stopper pin 37 of the operating plate 34.

Therefore, when the sliding operation button 35 is moved upward in FIG. 4 from the stop operation state setting position shown in FIG.

The pressing protrusion 40 of the operation plate 34 is the contact piece 5 of the interlocking lever 50
2 and rotate the interlocking lever 60 counterclockwise.

At this time, if no tape cassette is loaded or if the loaded tape cassette does not have a lug on the accidental erasure prevention opening on the side of the The stopper portion 58 of the erroneous erasure prevention lever 55 moves to a position in front of the stepped portion 39 of the operation plate 340 to prevent further forward movement of the operation plate 34, thereby prohibiting a recording operation caused by an erroneous operation. .

(Figure 8). However, if the erroneous erasure prevention port on the side surface of the loaded tape cassette is blocked by a lug, the erroneous erasure prevention lever 55 causes the lag detection water 57 to come into contact with the lug, and does not follow the rotation of the interlocking lever 500.

However, forward movement of the operation plate 34 is allowed.

Therefore, when the operation plate 34 is moved to a position where the click hole 45 engages with the ball 48, the suppression pin 38 is moved to the intermediate lever 32.
Push the operating lever 24 clockwise via the button.

As a result, the head support lever 19 and the pinch roller support lever 20 are connected to the first and second tension springs 28.
．． 290 follows the operating lever 24 with its contact pieces 19a, 20a in contact with the locking pin 26 of the operating lever 24 due to the elastic force, and the magnetic head 22 and the pinch roller 2
3 is brought into contact with the magnetic tape 97 (FIG. 9).

The positions of the head support lever 19 and the pinch roller support lever 20 at this time are defined as the second positions of the head support lever 19 and the pinch roller support lever 20.

Further, the main switch SW3 is turned on by having its movable contact piece pressed by the switch operating protrusion 19b of the head support lever 19, and the motor 92 rotates.

As a result, the capstan shaft 75 rotates, and the rotational force of the capstan shaft 50 is transmitted to the reel shaft 77 on the winding side via the pulley 94 and the first idler pulley 88. rotates and enters recording operation mode.

Note that when the sliding operation button 35 is moved from the stop operation state setting position shown in FIG. 4 to the recording operation state setting position shown in FIG. On the other hand, it rotates counterclockwise about the locking pin 26 as a fulcrum.

At this time, the length of the first tension spring 28, which is hooked between the locking pin 26 and the spring hook 30 of the head support lever 19, remains unchanged;
4 spring hook 27 and pinch roller support lever 20
The second tension spring 29, which is passed between the spring hook 31 and the second tension spring 29, is gradually stretched to accumulate elastic force.

Therefore, the head support lever 19. Pinch roller support lever 20, operation lever 24. The members such as the operation plate 34 are urged in the return direction by the second tension spring 29 and the tension spring 66.

When the click hole 45 engages with the ball 48, the click stop mechanism functions, and the operation plate 34 is locked at the recording operation position.

Therefore, even if the slide type operation button 35 is released, each of the above-mentioned members does not return to the stop operation state setting position shown in FIG. 4, and the recording operation state is maintained.

Next, the sliding operation button 35 is returned to the stop operation state setting position shown in FIG. 4 (the position where the click hole 44 engages with the ball 48), and then the sliding operation button 35 is moved downward in FIG. the operation panel 34.
When the click hole 43 is moved to a position where it engages with the ball 48, the stopper pin 3T pushes the operating lever 24 clockwise against the elastic force of the tension spring 610.

As a result, the head support lever 19 and the pinch roller support lever 20 are connected to the first and second tension swings 28.
Due to the elastic force of 29, each contact piece 19a, 20a follows the operating lever 24 in a state where it is in contact with the locking pin 26 of the operating lever 24, and the magnetic head 22 and the pinch roller 23
is brought into contact with the magnetic tape 97.

FIG. 10 shows this state, and the positions of the head support lever 19 and the pinch roller support lever 20 at this time are the second positions of the head support lever 19 and the pinch roller support lever 20.

Also, the main switch SW3 is turned on by having its movable contact piece pressed by the switch operation protrusion 19b of the head support lever 19, and the main switch SW3 is turned on in the same manner as in the recording operation state described above.
92 rotates, the capstan shaft 75 and the take-up reel shaft 77 rotate, and the reproducing operation state is set.

In this case as well, the spring 61 and the second tension spring 29 are gradually stretched as the operating lever 240 rotates.

Although the elastic force is stored, the click hole 43 engages with the ball 48 and the click stop mechanism performs its function, so that the operation plate 34 is locked at the regeneration operation state setting position.

Therefore, even if you take your hand off the sliding operation button 35, the head support lever 19. Pinch roller support lever 20. The members such as the operation lever 24 and the operation plate 34 do not return to the stop operation state set position as shown in FIG. 4, and the regeneration operation state is maintained.

Next, the sliding operation button 35 is further moved in one direction downward in FIG. 4, and the operation plate 34 is moved to a position where the click hole 42 engages with the ball 48 as shown in FIG. , the stopper pin 37 pushes the operating lever 24 further clockwise.

At this time, the pressing pin 38 provided on the operation plate 34 moves downward in each drawing and touches the cut-and-raised piece 19c provided on the head support lever 19 and constituting the contact piece of this invention, as shown in FIG. As shown, the first
The head support lever 19 is moved downward in the drawing against the elastic force of the tension spring 28.

The pinch roller support lever 20 also has a spring hook 31 that constitutes another contact piece in the invention.
Since the head support lever 190 is bent in the direction crossing the plane of the paper so as to contact the lower side in the drawing, when the head support lever 19 rotates downward in the drawing,
The pinch roller support lever 20 also moves downward in the drawing against the elastic force of the second tension spring 290.

Thus, the magnetic head 22 and the pinch roller 23 are separated from the magnetic tape 97, and the head support member 19 and the pinch roller support member 20 are placed in the first position.

At this point, the operating lever 24 is pushed by the pressing pin 38 of the operating plate 34 and further rotates in the clockwise direction in the drawing.
The locking pin 26 of the first and second tension springs 28
．． 290 resisting the elastic force, the head support lever 19 and the pinch roller support lever 20 are separated from the contact pieces 19a, 20a, and further moved upward in the drawing, and the switching lever 8
7, and the switching lever 8
Endless belt 96 as a biasing means
After rotating counterclockwise against the elastic force of the tape end detecting lever 79, it comes into elastic contact with a deployment spring 90 provided on the tape end detection lever 79.

Furthermore, at this time, the switch operation protrusion 19b of the head support lever 19 disposed at the second position releases the bias against the main switch SW3, and the main switch SW3 is thereby opened.

However, the switching lever 8 rotated counterclockwise.
7 approaches the other reel shaft 77, and its switch operation piece 91 turns on the sub-switch SW2, causing the motor 92 to rotate at high speed.

Further, as the switching lever 87 rotates from the first position, the small-diameter first idler pulley 88 moves onto the take-up side reel shaft 7.
7, the large-diameter second idler pulley 89 moves away from the reel 78 of the supply-side reel shaft 78.
Since the capstan shaft 750 is in pressure contact with the capstan shaft 750 via the endless belt 96, the rotational force of the capstan shaft 750 is transmitted to the supply reel shaft 78, and the supply reel shaft 78 rotates in the reverse direction, thereby performing a tape rewinding operation (FIG. 11). .

The position of the switching lever 87 at this time is defined as the second position of the switching lever 87.

In this case, since elastic force is stored in the tension spring 61 and the second tension spring 29 as the operation lever 240 rotates, the head support lever 19, the pinch roller support lever 20, the operation lever 24. The operating plate 34 and other members are urged in the return direction by the elastic force of the tension spring 61 and the second tension spring 29, but when the ball 48 engages with the click hole 42 provided in the operating plate 34, Since the holding force reducing mechanism performs its function, the person operating the dictation recorder 11 can hold the sliding operation button 35 at the tape rewinding operation position with a small amount of force.

However, the click hole 42 is small.

The ball 48 cannot fully enter into the hole 42, and the above-mentioned members cannot be held in the tape rewinding operation position only by the engagement between the click hole 42 and the ball 48.

In other words, the holding force reducing mechanism incompletely holds the sliding operation button 35 in the tape rewind operation position.If you release your hand from the sliding operation button 35, the above-mentioned members will move in the return direction. , the click hole 43 is held in the position where it engages with the ball 48, that is, the regeneration operation position shown in FIG.

As described above, each operation of stopping, recording, playing, and rewinding the tape can be performed by simply moving the single sliding operation button 35 forward and backward in one direction and the other, but the tape fast forward operation can be performed by pressing FFFr2O. Accordingly, the 1-discrimination value recording operation can be performed by pressing the cue button 67.

That is, when FFFr2O is pressed, the FF lever 68 rotates counterclockwise against the tension spring 69, and the switch operating piece 72 of the FF lever 68 pushes the movable contact piece of the sub-switch SW2.

and. When this switch SW2 turns on, the motor 9
2 rotates at high speed, and the flywheel 83. The winding side reel shaft 7 is connected to the winding side reel shaft 7 via the pulley 94 and the first idler pulley 88.
7 is rotated at high speed (Figure 12).

At this time, since the pinch roller 23 is located away from the capstan shaft 75, the capstan shaft 75 does not perform tape feeding operation, and the magnetic tape 97 is only taken up in the tape cassette by the rotation of the take-up reel shaft 770. It is wound on the side reel at high speed.

When FFFr2O is released, the FF lever 68 is returned to its original position by the tension spring 694C, the sub-switch SW2 is opened, and the motor 92 is stopped.

Note that during the recording operation, the engaging tongue piece 41 of the operation plate 34 is set to FF.
Located on the orbit of the locking piece 74 of the lever 68, FFFr2
O press operation is prohibited.

During the tape fast-forwarding operation, the locking piece 74 is positioned on the trajectory of the engaging tongue piece 41, and the recording operation is prohibited.

Next, when the cue button 67 is pressed and the cue lever 62 is rotated counterclockwise against the tension spring 66, the suppressing piece 63a of the cue lever 62 is pressed against the interlocking lever 50.
Push the abutting piece 53 and rotate the interlocking lever 50 counterclockwise.

At this time. When the tape cassette C is not loaded or the loaded tape cassette C does not have a lug, the accidental erasure prevention lever 55 rotates following the interlocking lever 50, and the stopper portion of the accidental erasure prevention lever 55 rotates. 59 is now located on the trajectory of the locking piece 65 of the cue lever 62, the subsequent rotation of the cue lever 62 is prevented, and the discrimination signal recording operation due to erroneous operation is prevented (13th
figure).

However, if the accidental erasure prevention port provided on the side surface of the loaded tape cassette C is blocked by a lug, the accidental erasure prevention lever 55 will cause its lug detection claw 57 to come into contact with the lug, causing the interlocking lever 500 to rotate. does not follow.

Therefore, the rotation operation of the cue lever 620 is permitted.

Therefore, when the cue lever 62 is sufficiently rotated counterclockwise, the pressing piece 64 of the cue lever 62 is pressed against the intermediate lever 3.
2 clockwise, one end of this intermediate lever 32 pushes the locking pin 26 of the operating lever 24, and the operating lever 24 is rotated clockwise against the tension spring 61.

Then, the head support lever 19 and the pinch roller support lever 20 follow the rotational movement of the operating lever 240 and are rotated counterclockwise to be placed in the second position, and the magnetic head 22 and the pinch roller 23 are placed in the second position. 97 (Fig. 14).

Further, the main switch SW3 is turned on when its movable contact piece is pushed by the switch operating protrusion 19b of the head support lever 19, and the motor 92 rotates, causing the capstan shaft 75 and the take-up reel shaft 77 to rotate. At the same time, the cue switch SW4 is turned on by being pressed by the cue button 67, and the 2-discrimination signal recording circuit is activated to enter the 1-discrimination signal recording operation state.

Note that this discrimination signal is used to distinguish between records that should actually be written and records that do not need to be written (γ This is a signal for determining whether the information is written in the text, such as an explanation when writing it, etc.

By the way, this dictation recorder 11 is designed so that when there is no magnetic tape on the supply reel of the tape cassette (C) during a recording operation, an alarm sound generating device is activated to emit an alarm sound to notify the end of the tape. It has become.

The operation in this case will be explained with reference to FIGS. 15 and 16.

When the tape cassette C is loaded into the cassette loading section and the sliding operation button 35 is moved upward, as mentioned above, if the accidental erasure prevention port of the tape cassette C is covered with a lug, the click hole 45 is closed. A recording operation can be performed while engaged with the ball 48.

At this time, the tension of the magnetic tape 97 acts as a clockwise rotational force on the tape end detection lever 79 supporting the reel shaft 78 on the supply side, but the tension spring 8
4, rotation of the tape end detection L/bar 790 is prohibited.

In this state, one end of the swing lever 81 is away from the inner peripheral surface of the flywheel 83, and the other end of the swing lever 81 is away from the alarm microswitch SW1 (see FIG. 7). .

Then, when the magnetic tape 97 runs out on the supply reel of the tape cassette C.

Since the end of the magnetic tape 97 is fixed to the supply reel, the tension of the magnetic tape increases rapidly.

The tape end detection lever 79 rotates clockwise against the tension spring 84.

At this time, the amount of movement of the reel shaft 78 is very small, but since the tape end detection lever 79 is pivoted at a portion close to the reel shaft 78, the rocking lever 81 is not displaced greatly due to the "lever" principle. Then, one end thereof is brought into contact with the inner peripheral surface of the flywheel 83.

When the swing lever 81 comes into contact with the inner peripheral surface of the flywheel 83, the tape end detection lever 79 cannot rotate any further and remains in that position, but the flywheel 83 rotates. When the notch 86 reaches a position opposite to one end of the swing lever 81, the one end retracts into the notch 86 (FIG. 15).

However, since the flywheel 83 continues to rotate clockwise, the inner edge P1 of the notch 86 presses one end of the swing lever 81 with a force in the connection direction KF, as shown in FIG.

This force E is applied at the rotation center P2 of the swing lever 81.
A component force FX directed toward the center of rotation of the tape end detection lever 790 and a component force FY orthogonal thereto act on the tape end detection lever 79.

Due to the action of this component force FY, the tape end detection lever 79
does not return due to the elastic force of the tension spring 84, and therefore the swing lever 81
Rotates clockwise against zero elastic force.

As a result, one end of the swing lever 81 comes into sliding contact with the inner peripheral surface of the flywheel 83, and the other end of the swing lever 81 pushes the movable contact piece of the microswitch SW1.

When the switch SW□ is turned on, the alarm sound generating device is activated and an alarm sound is generated to notify the end of the tape.

The swing lever 81 has one end inserted into the notch 86 each time the flywheel 83 rotates once, and is rotated counterclockwise by the deployment spring 82 each time.
Since the micro switch SW is opened, the switch lock,
As shown in FIG. 17, every time the flywheel 83 rotates once, it is instantaneously turned off.

However, since the time during which the switch SW0 is in the OFF state is extremely short, the alarm sound is emitted almost continuously.

Because of the above configuration, the dictation recorder 11 shown in this embodiment has the following advantages.

First, recording, playback, and tape rewinding operations can be performed by moving the single sliding operation button 35 forward and backward, so compared to other devices, a separate operation button is provided for each operation. It has a simple configuration and good operability.

The operating plate 34 is provided with a relatively small diameter click hole 42 and relatively large diameter click holes 43, 44, 45, and the board 46 is provided with a hole 47, into which the ball is inserted. 4
8 to the above-mentioned click holes 42, 43, 4 by a leaf spring 49.
The small diameter click hole 42 constitutes a holding force reducing mechanism together with the ball 48 and the leaf spring 49, and the large diameter click holes 43, 44,
45 constitutes a click stop mechanism together with the ball 48 and the leaf spring 49, so by engaging the click hole 44 with the ball 48, the slide type operation button 35 can be held at the stop operation state setting position. By engaging the click hole 45 or 43 with the ball 48, the sliding operation button 35 can be held in the recording or playback operation state setting position.

Furthermore, by engaging the click hole 42 with the ball 48, the sliding operation button 35 can be held incompletely at the tape rewinding operation position. It can be held in a fixed position by force.

Also, the head support lever 19 to which the magnetic head 22 is attached
and the pinch roller support lever 20 to which the pinch roller 23 is attached are rotatably supported on a common shaft 21, and between the operation lever 24 and the head support lever 19, and between the operation lever 24 and the pinch roller support lever 20. 1st each between. The second tension springs 2B and 29 are connected to the head support lever 19 and the pinch roller support lever 2.
0 rotates following the operating lever 24,
The second tension spring 29 stores an elastic force as the magnetic head 22 and pinch roller 23 move toward the tape cassette, so that the sliding operation button 35 can be moved easily. Operability can be improved.

Further, since the second tension spring 29 also functions as a return spring for the head support lever 19 and the pinch roller support lever 20, there is no need to provide a separate return spring, and the number of parts can be reduced. becomes easier.

In this case, the first tension spring 28 can also function as a return spring by hanging one end of the first tension spring 28 on the suffling hook 27.

In addition, a common erroneous erasure prevention lever 55 handles recording operations caused by erroneous operation of the slide type operation button 35 and recording operations caused by erroneous operation of a cue button 67 provided separately from the slide type operation button 35.
Since this is prevented, the number of parts is small and the configuration is simple.

Further, the supply reel shaft 78 is attached to one end of a rotatably long tape end detection lever 79.

By rotating the tape end detection lever 79 with the tension at the end of the magnetic tape 97, the swing lever 81 provided at the other end of the tape end detection lever 79 is moved to a large extent, and the swing lever 81 is moved at that position. The flywheel 830 is pushed around with a strong rotational force, and the alarm microswitch SW□ is closed via the swing lever 81 to activate the alarm sound generator, so the tension of the magnetic tape and the supply reel shaft are Even though the amount of movement is very small, the alarm sound generating device can be operated reliably.

Furthermore, since the alarm sound is emitted while one end of the swing lever 81 is in sliding contact with the inner circumferential surface of the flywheel 83, the alarm sound is emitted almost continuously, and the notification function is fully demonstrated. be able to.

Also, even though the tension of the magnetic tape 97 strongly acts on the reel shaft 78 on the supply side during tape rewinding,
During the tape rewinding operation, the locking pin 26 of the operation lever 24 engages the deployment spring 85 provided on the tape end detection lever 79.
Since the clockwise rotation of the take end detection lever 790 is prevented by pressing the take end detection lever 790, the alarm sound generating device will not malfunction during the tape rewinding operation.

Furthermore, in the state of tape rewinding operation, the operating lever 24
The second idler pulley 8 attached to the switching lever 87 is pushed around with the locking pin 26 provided on the switching lever 87.
9 is brought into pressure contact with the reel stand 78a of the supply side reel shaft 78 via the endless belt 96.
6 is provided on the switching lever 87 so that the switching lever 87 is pushed around via the deployment spring 90. Therefore, the pressing force of the second idler pulley 89 against the reel stand 78a is controlled by the deployment spring 90. 900, the elastic force is fixed at a constant value, and the pressure contact force is too strong and the endless belt 9
6 may be damaged, the motor 92 may heat up due to the increased load, and the pressing force may be too weak to cause slip between the endless belt 96 and the reel stand 78a, making it impossible to reliably transmit rotational force.

No such inconvenience will occur.

The operating lever device for a tape recorder is this invention.

It has a movable sliding operation button, and by moving the sliding operation button in one direction from the position where the stop operation state is set, each operation state of playback 1 rewind is set in this order, and the rewind operation state is set. By moving in the other direction from the set position, each operating state of playback or stop is set, and in each operating state of playback or rewinding, the idler pulley connected to the rotational force generating means is moved to one of the pair of reel shafts or It is used in tape recorders that selectively transmit rotational force to one or the other of a pair of reel shafts by selectively contacting the other, and is attached to a sliding operation button and moves together with the sliding operation button. an operation panel 34;
A stopper pin 37 fixed to the operation plate 34; and the operation plate 3
A press pin 38 is fixed to the press pin 38; one end thereof is brought into contact with the stopper pin 37 of the operation plate 34, and the one end is movable together with the stopper pin 37 when the operation plate 34 is moved in one direction and the other direction. , an operating lever 24 that is rotatable around an intermediate portion by movement of a stopper pin 37 due to movement of the operating plate 34; a pinch roller 23 is attached to one end, and one end is used to move the operating plate 34 in the other direction. and a first position where the pinch roller 23 is separated from the magnetic recording tape 97 with the other end being the center of rotation, and a first position where the pinch roller 23 is brought into contact with the magnetic recording tape 97. It is rotatable between the slide type operation button and the second position, and when the slide type operation button is placed in the stop operation state setting position, it is placed in the first position by contacting the other end of the operation lever 24. A pinch roller support lever 20 is placed in a second position by contacting the other end of the operation lever 24 when the operation button is placed in the playback operation state setting position; a magnetic head 22 is attached to one end.

A first position in which one end is arranged so as to be able to contact the other end of the operating lever 24 from the direction of movement of the operating plate 34 in the other direction, and the magnetic head 22 is separated from the magnetic recording tape 97 at the rotation center of the other end. and magnetic head 22 on magnetic recording tape 97v.
(c) It is rotatable between the second position and the second position where it comes into contact, and when the sliding operation button is placed in the stop operation state setting position, it is placed in the first position by contacting the other end of the operation lever 24. and a head support lever 19 that is placed in a second position by contacting the other end of the operation lever 24 when the sliding operation button is placed in the playback operation state setting position; the operation lever 24 and the head support lever. a first spring 28 that is connected to the head support lever 19 and brings one end of the head support lever 19 into contact with the other end of the operating lever 24 by elastic force;
It is connected to the operating lever 24 and the pinch roller support lever 20.

A second spring 2 that brings one end of the pinch roller support lever 20 into contact with the other end of the operating lever 24 by elastic force.
9; A contact piece is provided with the head support lever 19vc and comes into contact with the pressing pin 38 of the operation plate 34 from the other direction of movement of the operation plate 34 when the sliding operation button is placed at the rewind operation state setting position. 19c; a contact piece 31 that is provided on the pinch roller support lever 20 and contacts the head support lever 19 from the direction of movement of the head support lever 19 from the first position to the second position; and a pair of reel shafts 77°. a switching lever 87 disposed between 78 and swingable between a first position close to one reel shaft 77 and a second position close to the other reel shaft 78 with one end as the rotation center; It is provided on the lever 87 so as to be movable together with the switching lever 87, and when the switching lever 87 is placed in the first position, it contacts the reel stand 77a of one reel shaft 77 and transfers the rotational force from the rotational force generating means to one reel. A first idler pulley 88 that transmits transmission to the shaft 77; is provided on the switching lever 87 so as to be movable together with the switching lever 87, and comes into contact with the reel stand 78a of the other reel shaft 78 when the switching lever 87 is placed in the second position. a second idler pulley 89 for transmitting the rotational force from the rotational force generating means to the other reel shaft 78; a biasing means 96 for biasing the switching lever 87 to the first position; and a biasing means 96 provided on the switching lever 87. When the sliding operation button is placed in the rewinding operation setting position, the other end of the operation lever 24 is pressed and an elastic force is accumulated, which causes the switch to switch against the urging force of the urging means 96. a spring 90 for disposing the lever 87 in the second position; and a head in which the contact piece 19c is brought into contact with the suppressing pin 38 of the operating plate 34 by arranging the sliding operation button to the rewinding operation setting position. Support lever 1
9 and head support lever 19, the pinch roller support lever 20 is placed in the first position against the elastic force of the first and second springs 28, 29. .

With such a configuration, it has a sliding operation button that can be moved in one direction and the other direction, and by moving the sliding operation button in one direction from the position where the stop operation state is set, it is possible to rewind one playback. Each operating state is set in this order, and by moving in the other direction from the position where the rewinding operating state is set, each operating state of playback or stop is set, and in each operating state of playback or rewinding, the rotational force generating means Operation of a tape recorder used in a tape recorder that selectively brings a connected idler pulley into contact with one or the other of a pair of reel shafts to selectively transmit rotational force to one or the other of the pair of reel shafts. The lever device has a simple structure that allows the idler pulley to be brought into pressure contact with the reel stand of the supply side reel shaft with a constant force, thereby ensuring the transmission of rotational force to the reel shaft without damaging the motor. It is possible to provide an operating lever device that has a simple configuration and reliable and good operability.

The embodiments described above are intended to explain the invention and are not intended to limit the invention in any way.

It goes without saying that all modifications, modifications, etc. made within the technical scope of this invention are also included in this invention.

[Brief explanation of drawings]

The figures show one embodiment of this invention. Figure 1 is a side view of the exterior, Figure 2 is a plan view of the exterior, Figure 3 is a front view of the exterior, and Figure 4 is a front view of the exterior.
5 and 6 are partial side sectional views of FIG. 4, FIG. 7 is a plan view of the drive mechanism, and FIGS. 8 to 16 show the operating state of each part. The plan view shown in FIG. 17 is a diagram showing the operating state of the alarm microswitch. 1...dictation recorder (tape recorder), 19.
...Head support lever, 19c...Cut and raised piece (contact piece). 20...Pinch roller support lever, 22...
...magnetic head, 23...pinch roller, 2
4... Operation lever, 28... First tension spring, 29... Second tension spring, 31... Spring hook (contact piece), 34・
......Operation board, 35...Sliding operation button, 37...Stopper pin, 38...Press pin, 77...Reel shaft, 77a...
・Reel stand. 78... Reel shaft, 78a... Reel stand, 87... Switching lever, 88... First idler pulley. 89...Second idler pulley, 90...
... Deployment spring, 92... Motor (rotational force generating means). 96... Endless belt (biasing means), 97...
...magnetic take.

Claims (1)

[Claims for Utility Model Registration] It has a movable sliding operation button, and by moving the sliding operation button in one direction from the position where the stop state is set, each operation state of playback and rewinding is changed in this order. Each operation state of playback and stop is set by moving in the other direction from the position where the rewind operation state is set, and in each operation state of playback or rewind, the idler boot connected to the rotational force generating means is set to 1. It is used in a tape recorder that selectively contacts one or the other of a pair of reel shafts to selectively transmit rotational force to one or the other of the pair of reel shafts. An operation plate 34 that is attached to the sliding operation button and moves together with the sliding operation button; A stopper pin 37 fixed to the operation plate 34: The operation plate 3
4; one end is brought into contact with the stopper pin 37 vc- of the operation plate 34, and the one end is movable together with the stopper pin 37 when the operation plate 34 moves in one direction and the other direction. The operation lever 24 is rotatable around the intermediate portion by movement of the stopper pin 37 due to the movement of the operation plate 34; A pinch roller 23 is attached to one end, and the operation plate 34 is moved in the other direction by one end. A first position in which the pinch roller 23 is placed so as to be able to contact the other end of the operating lever 24 from the direction, and the pinch roller 23 is separated from the magnetic recording tape 97 with the other end as the rotation center, and a first position in which the pinch roller 23 is brought into contact with the magnetic recording tape 97. When the sliding operation button is placed in the stop operation state setting position, the sliding operation button is placed in the first position by contacting the other end of the operation lever 24. When the operation button is placed at the playback operation state setting position, it contacts the other end of the operation lever 24 to
A magnetic head 11 is attached to one end of the pinch roller support lever 20 and the other end of the pinch roller support lever 20 is arranged so as to be able to contact the other end of the operating lever 24 from the direction of movement of the operating plate 34 in the other direction. , is rotatable around the other end between a first position where the magnetic head 22 is separated from the magnetic tape 97 and a second position where the magnetic head 22 is brought into contact with the magnetic tape 97, and has a sliding operation. When the button is placed in the stop operation state setting position, it is placed in the first position by contacting the other end of the operation lever 24, and when the sliding operation button is placed in the regeneration operation state setting position, the operation lever 24 The head support lever 19 is placed in the second position by contacting the other end; The head support lever 19 is connected to the operation lever 24 and the head support lever 19, and the head support lever 19 is moved to the other end of the operation lever 24 by elastic force. a first spring 28 that brings one end of the pinch roller supporting lever 20 into contact with the other end of the operating lever 24 through elastic force; A second spring 29 is provided on the head support lever 19, and when the sliding operation button is placed in the rewinding operation state setting position, the second spring 29 is provided to push the pressing pin 38 of the operation plate 34 from the other direction of movement of the operation plate 34. a contact piece 19c that comes into contact; a contact piece 31 that is provided on the pinch roller support lever 20 and comes into contact with the head support lever 19 from the direction of movement of the head support lever 19 from the first position to the second position; A switching lever is arranged between reel shafts 77 and 78 and is swingable around one end between a first position close to one reel shaft 77 and a second position close to the other reel shaft 78. 87; is provided on the switching lever 87 so as to be movable together with the switching lever 87, and when the switching lever 87 is placed in the first position, the reel stand 77a of one reel shaft 77 is moved.
a first idler pulley 88 that contacts the rotational force generating means 92 and transmits the rotational force from the rotational force generating means 92 to one reel shaft 77 ; a second idler pulley 89 which contacts the reel stand 78a of the other reel shaft 78 and transmits the rotational force from the rotational force generating means 92 to the other reel shaft 78 when placed in the second position; A biasing means 96 for biasing the switching lever 87 to the first position; when the sliding operation button is placed in the rewinding operation setting position, the other end of the operating lever 24 is pressed and an elastic force is accumulated. The biasing means 9 is biased and caught by this elastic force.
and a spring 90 for disposing the switching lever 87 in the second position against the biasing force of the switching lever 87. The head support lever 19 has the contact piece 19c in contact with the pressing pin 38 of the operation plate 34 due to the arrangement of the sliding operation button at the rewind operation setting position, and the pinch roller support has the contact piece 31 in contact with the head support lever 19. Lever 20 is the first
and the first spring against the elastic force of the second spring 28,29.
An operating lever device for a tape recorder, characterized in that it is arranged at the position.