JPS6155178B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating mechanism for a tape recorder, and its object is to use the rotational force of a motor to rotate a capstan shaft.
Operations such as playback (recording), fast forwarding, rewinding, etc. can be performed easily with little torque, and when performing fast forwarding or rewinding operations from the playback state, the head base can be moved back slightly to perform cue or review operations easily. In addition, it is an object of the present invention to provide an apparatus that reliably prevents malfunctions.

That is, an embodiment of the present invention will be described with reference to FIGS. 1 to 12. 1 is a chassis, and a head base 7 equipped with a magnetic head 4, an erasing head 5, and a pinch roller 6 slides on the chassis 1. It is movable. 9... is a guide pin for attaching the head base 7 to the chassis 1, 8 is a spring attachment shaft provided on the head base 7, 10 and 11 are supply or take-up reel stands rotatably provided on the chassis 1, and 12 is a A capstan shaft is rotatably provided on the chassis 1, and a drive gear 13 is provided at the lower end of the capstan shaft 12, as is particularly clear in FIG. 14 is a flywheel fixed to the capstan shaft 12; 15 is a belt provided between a motor (not shown) and the flywheel 14;
6 is an idler for fast forwarding and rewinding, 19 is a sub-idler, and the idler 16, sub-idler 1
9 transfers the rotational force of the flywheel 14 to the belt 2.
Supply or take-up reel stand 10,1 via 1
1 to perform rewind or fast forward operations. 17 is an idler mounting plate made of synthetic resin and rotatably provided on the back surface of the chassis 1; 20 is a sub-idler mounting plate coaxially mounted on the mounting shaft 18 of the idler mounting plate 17; and,
The idler mounting plate 17 is connected to a fast forward/rewind lever 69 which will be described later, and the idler mounting plate 17 rotates as the fast forward/rewind lever 69 moves.
This is to engage the idler 16 with the reel stands 10 and 11. Note that the idler 16 and sub-idler 19 are connected to the reel stand 1 through the hole 2 provided in the chassis 1.
It protrudes toward the 0 and 11 sides. Reference numeral 22 denotes an operating mechanism mounting plate arranged at a predetermined interval on the back surface of the chassis 1, and 23 is an auxiliary mounting plate arranged at a predetermined interval on the back surface of the operating mechanism mounting plate 22. A main operating mechanism 24 is attached to the operating mechanism mounting plate 22. To explain the operating mechanism 24 using the exploded perspective view seen from the back side of FIG. The interlocking gears 25 and 30 are interlocking gears provided on the left and right sides of the gear 13, and the interlocking gears 25 and 30 have the same configuration. 26a, 26b, 31a, 31b are toothless parts provided by cutting out a part of the gear parts of the interlocking gears 25, 30, and the toothless parts 26a, 26b and 31a, 3
1b are provided at positions shifted by 180 degrees from each other. 2
7a, 27b, 32a, 32b are interlocking gears 25,
Driving parts 28a, 28b, 33a, and 33b provided on the back side of 30 at positions 180 degrees apart from each other are similarly provided on the back side of the interlocking gears 25 and 30 at positions 180 degrees apart from each other, that is, toothless parts 26a, 26b, and 31.
Locking parts 29, 34 provided at the same intervals as a, 31b
is a drive pin provided at a position eccentric from the rotation center of the interlocking gears 25 and 30. When the interlocking gear 25 operates, a fast forward or queue operation is performed, and when the interlocking gear 30 operates, a rewind or review operation is performed, and both interlocking gears 2
When 5 and 30 are activated, a playback or recording operation is performed. 35 and 36 are interlocking gears 2
A spring member for giving initial rotation to 5, 30,
It is attached to the mounting plate 22 with screws 37 and 38,
A drive unit 27 whose one end is provided on the interlocking gears 25 and 30
a, 27b, 32a, and 32b. 39 and 42 are the locking parts 2 of the interlocking gears 25 and 30
a stopper member that engages with 8a, 28b, 33a, 33b to hold the interlocking gears 25, 30 in a predetermined position (a position that does not mesh with the drive gear 13) against the initial rotational force of the spring members 35, 36; 41,4
4 is an electromagnetic mechanism for operating the stopper members 39, 42; 40, 43 are stopper members 39, 4;
This is the return coil spring No. 2. The stopper members 39, 42 are attracted toward the electromagnetic mechanisms 41, 44 when the electromagnetic mechanisms 41, 44 are energized, and are returned to their original positions by the elasticity of the coil springs 40, 43 when the excitation is released. Reference numerals 45 and 49 denote drive levers that are slidably attached to the auxiliary mounting plate 23. The drive levers 45 and 49 have the same configuration, and are opposed to the back surfaces of the interlocking gears 25 and 30. Engagement holes 46 and 50 that engage with the drive pins 29 and 34 are provided.
0 is a long hole extending in a direction perpendicular to the sliding direction of the drive levers 45, 49. The drive levers 45 and 49 rotate once per rotation of the interlocking gears 25 and 30.
Move back and forth. 47, 47, 51, 51 are sliding guide holes provided with drive levers, and 48, 52 are mounting holes provided at the ends of the drive levers 45, 49. Note that 45a and 45b are detection pins provided on the drive lever 45, and 49a and 49b are detection pins provided on the other drive lever 45.
With the detection pin provided in the detection pin 45a, 45
b, 49a, and 49b engage with a switch portion 89 of a detection device 85, which will be described later. Reference numeral 54 denotes a regeneration operation lever that is slidably and rotatably provided on the mounting plate 22 by a mounting shaft 53. The regeneration operation lever 54 has a substantially T-shape and is connected to the head base 7 and the coil spring 65
The operating section 55 is comprised of a roller that operates a connecting lever 66 that is connected by a lever, and arm sections 56 and 57 that connect the driving levers 45 and 49 are provided. 58 is a guide hole provided in the operation part, 59 is a long hole, 60, 6
1 is a long hole provided in the arm portions 56 and 57, and the long hole 6
Pins 62 and 63 are inserted into mounting holes 48 and 52 provided in drive levers 45 and 49, and the three are connected by caulking. 64 is a spring for returning the regeneration operation lever 54 to its original position. 6
Reference numeral 6 denotes a connecting lever slidably provided on the mounting plate 22, and the connecting lever 66 has an operating surface 67 that engages with the operating portion 55, and a bent piece 68 that protrudes from the hole 3 provided in the chassis 1. The operation surface 67 is a mountain-shaped inclined surface, and a coil spring 65 is stretched around the bending piece 68. Therefore, the connecting lever 66 is connected to the head base 7 by the coil spring 65. 69 is a fast forward/rewind lever provided on the mounting plate 22 and slides in a direction perpendicular to the drive levers 45, 49; 70, 71 are pins provided on the fast forward/rewind lever 69; 72 is a playback operating lever 54; A pin that protrudes into the provided long hole 59 and connects the playback operation lever 54 and the fast forward/rewind lever 69, 73, 73 are long holes for guides,
74 is a shaft to be connected to the idler mounting plate 17;
5 and 76 are stoppers provided on the fast forward/rewind lever 69, and 77 and 78 are spring mounting pieces. 7
Reference numerals 9 and 80 are operation pieces rotatably provided on pins 70 and 71 provided on the fast forward/rewind lever 69;
The operating pieces 79, 80 are brought into contact with the stoppers 75, 76 by the elasticity of spring members 83, 84. Note that the spring members 83 and 84 have their approximate centers aligned with the pin 7.
0,71, and one end has a spring mounting piece 7.
7, 78, and the other end is locked in holes 81, 82 provided in operation pieces 79, 80. 85 is a detection device, and the detection device 85 is connected to the drive lever 4.
5 and 49 and correct the malfunction to normal operation, the board 8 provided on the auxiliary mounting plate 23
6. It consists of a switch part 89 attached to a board 86. Reference numerals 87 and 88 indicate mounting shafts provided on the board 86, into which the base 90 of the switch section 89 is fitted, and if necessary, slits may be provided in the mounting shafts 87 and 88 to facilitate installation. You may. The switch part 89 consists of a base 90, four mutually independent contact pieces 91, 92, 93, 94, one common contact piece, and operating parts 96, 97 provided at both ends of the common contact piece 95. The detection pins 45a, 45 provided on the drive levers 45, 49
b and located between 49a and 49b. In addition, 9
8 and 99 are mounting holes. The common contact piece 95 and the contact piece 91 constitute a first switch SW ₁ , the common contact piece 95 and the contact piece 92 constitute a second switch SW ₂ , and the common contact piece 95 and the contact piece 93 constitutes the third switch SW ₃ , and the common contact piece 9
5 and the contact piece 94 constitute a fourth switch _SW4 . In addition, each switch SW ₁ to _{SW 4} is turned "ON" by moving the drive levers 45 and 49.
This is to turn it OFF.

Next, to explain the operation of the present invention, first, in order to simplify the explanation, the operation of the detection device 85 will be described later. Figures 4 to 8 show the detection device 8.
FIG. 4 is an explanatory diagram of the operation with reference numeral 5 removed, and FIG.
The interlocking gears 25 and 30 rotate in the directions of arrows A and B in the figure due to the elasticity of the spring members 35 and 36. Although it is biased, it does not rotate because the stopper members 39 and 42 are engaged with the locking portions 28b and 33b. Further, the drive pins 29 and 34 provided on the interlocking gears 25 and 30 are located on the arrow D side in the lower part of the drawing. In this state, when the cassette is installed, the motor (not shown) rotates, and the capstan shaft 1 rotates.
2 rotates, and the drive gear 13 rotates in the direction of arrow C. For example, when a rewind button (not shown) is operated, the electromagnetic mechanism 44 is excited and attracts the stopper member 42, so that the stopper member 42 and the locking portion 33b of the interlocking gear 30 are disengaged. The interlocking gear 30 is given initial rotation by the elasticity of the spring member 36 and rotates slightly in the direction of arrow A as shown in FIG. , meshes with the driving gear 13, and rotates the interlocking gear 30 by half a turn so that the driving gear 13 faces the next toothless portion 31b. During this half-rotation, the electromagnetic mechanism 44 is de-energized and the stopper member 42 is urged by the coil spring 43 in the direction of returning to its original position, so that the next locking portion 33a faces the stopper member 42. When it reaches this position, it engages with the locking portion 33a and prevents further rotation. Further, the spring member 36 also engages with the next driving portion 32b. FIG. 7 shows a state in which the drive gear 30 has made a half turn. Also, when the other electromagnetic mechanism 41 is excited, that is, when the fast forward button is operated, the half rotation of the interlocking gear 25 has the same effect as the half rotation of the interlocking gear 30, that is, the spring member 35 moves in the direction of arrow B. Initial rotation of, drive gear 1
3 and the interlocking gear 25, and then the interlocking gear 25 is disengaged. The above has explained the transmission of the rotational force of the drive gear 13 to the interlocking gears 25 and 30. Next, the playback (recording) operation will be explained using FIGS. 4 and 6. When the regeneration button (not shown) is operated, the two electromagnetic mechanisms 41 and 44 are excited at the same time, so the stopper members 39 and 42 are simultaneously attracted toward the electromagnetic mechanisms 41 and 44, and the interlocking gear 25 is activated as described above. ，
30 is rotated by the elasticity of spring members 35 and 36;
Both mesh with the drive gear 13 and rotate half a rotation at the same time, and the stopper members 39 and 42 engage the next locking portions 28a and 3.
3a, and the next toothless portions 26b, 31b
is opposed to the driving gear 13, so the interlocking gears 25, 3
The rotation of 0 stops. As the interlocking gears 25, 30 rotate by half a rotation, the drive pins 29, 34 provided on the interlocking gears 25, 30 also rotate by a half, and are positioned in the direction of arrow E (see FIG. 6). Therefore, the drive levers 45 and 49 that engage with the drive pins 29 and 34 also move in the direction of arrow E, and the regeneration operation lever 54 also moves in the same direction. By moving the regeneration operation lever 54 in the direction of arrow E, the operation section 55 presses the operation surface 67 of the connection lever 66, and the connection lever 66 is moved in the same direction (direction of arrow E).
Since the head base 7, which is connected to the connecting lever 66 by the coil spring 65, is also moved to the reproducing position in the same direction, the reproducing operation is performed. It goes without saying that the recording operation can be easily performed by adding a means for operating a recording/playback switch to the aforementioned operation. Furthermore, when the stop button is operated from the reproducing state, the two electromagnetic mechanisms 41 and 44 are simultaneously excited again, the interlocking gears 25 and 30 rotate half a rotation in the same direction (arrows A and B directions), and each member returns to its original state. It returns to the stopped state (Fig. 4).

Next, the rewinding operation will be explained using FIG. 4 and FIG. 7. When the rewinding button is operated from the stopped state in FIG. 4, only the electromagnetic mechanism 44 is energized, so the stopper member 42 is 33b is disengaged, and as shown in FIG.
3a is engaged and locked. This half rotation of the interlocking gear 30 also causes the drive pin 34 to rotate half a rotation, and the drive lever 49 that engages with the drive pin 34 moves in the direction of arrow E. Therefore, the drive lever 49 and one arm 5
The playback operation lever 54 to which 7 is connected also slides a little in the direction of arrow E, but since the other arm 56 is connected to the drive lever 45 that does not slide, it moves halfway in the direction of arrow H.
rotate in the direction. As the playback operation lever 54 rotates, the fast-forward/rewind lever 69, which is connected to the playback operation lever 54 by a pin 72, also attempts to rotate in the same direction, but the fast-forward/rewind lever 69 is connected to the drive levers 45, 49. Since it is allowed to slide only in orthogonal directions, it moves in the direction of arrow G. and,
By moving the fast-forward/rewind lever 69 in the direction of arrow G, the idler mounting plate 17 connected to the fast-forward/rewind lever 69 by a shaft 74 moves in the direction of arrow J in FIG.
The idler 16 rotates in the direction of the supply reel stand 10.
, the supply reel stand 10 is rotated at high speed, and rewinding is performed. Further, when the stop button is operated, the interlocking gear 30 rotates another half turn in the same direction (arrow A direction), each member returns to its original position, and the rewinding operation is canceled to return to the original stopped state.

Further, although the fast-forward operation is not particularly shown, if only the reverse electromagnetic mechanism 41 is energized from the stopped state in FIG. 4, contrary to the above-mentioned rewind operation, only the interlocking gear 25 rotates by half a rotation, causing the drive The lever 45 moves, the playback operation lever 54 rotates in the direction of arrow I, and the fast forward/rewind lever 69 moves in the direction of arrow F, which is opposite to the above. Therefore, the idler mounting plate 17 shown in FIG. 2 rotates in the direction of arrow K, and the idler 16
The rotation is transmitted to the take-up reel stand 11 via the sub-idler 19, and the take-up reel stand 11 is rotated at high speed to perform a fast-forward operation. Then, when the stop button is operated, the interlocking gear 25 rotates another half turn, and the fast forward operation is canceled.

Next, to explain the queue and review operations, the review operation will first be explained using Figures 4, 6, and 8. The state is as explained above. When the review button (the rewind button may also be used) is operated in the playback state, that is, the head base 7 is positioned at the playback position, the electromagnetic mechanism 41 is energized and the stopper member 39 is attracted. Therefore, only the interlocking gear 25 rotates half a rotation, and the interlocking gear 25 rotates by a fourth rotation.
Return to the state shown in the figure. Therefore, the drive lever 45 that engages with the interlocking gear 25 also returns to the state shown in FIG. 4, and the playback operation lever 54 that is connected to the drive lever 45 also returns somewhat in the direction of arrow D, but this time the rewind operation is not performed. Conversely, since the other drive lever 49 is positioned in the direction of arrow E, the playback operation lever 54 rotates in the direction of arrow H, and moves the fast forward/rewind lever 69 in the direction of arrow G. Along with this movement, the connection lever 66 that had been engaged with the operation part 55 of the regeneration operation lever 54 gradually disengages from the operation surface 67, so the connection lever 66 moves slightly in the direction of arrow D. , during the movement, press the fast forward/rewind lever 6.
As shown in FIG. 8, one operating piece 80 provided at the connecting lever 66 protrudes into the movement range of the connecting lever 66 and engages with the operating surface 67, preventing its movement.The head base 7 also moves back slightly, causing the pinch. The engagement between the roller 6 and the capstan shaft 12 is released, and the magnetic head 4 is in slight contact with the magnetic tape (not shown) (to function as a sensor head).
Further, as the fast forward/rewind lever 69 moves in the direction of arrow G, the idler mounting plate 17 rotates in the direction of arrow J in FIG.
A review operation can be performed to rotate the supply reel stand 10 at high speed. and,
When, for example, an arbitrary song is selected by the review operation and the operation is completed, the interlocking gear 25 rotates half a turn again, and the drive lever 45 moves in the direction of the arrow E as shown in FIG. rotates in the direction of arrow I and moves in the direction of arrow E, so the operation portion 55 of the playback operation lever 54 engages with the operation surface 67 of the connection lever 66 again, and the fast forward/rewind lever 69 moves in the direction of arrow F. Since the head base 7 moves in the direction, the engagement by the operation piece 80 is released and the connection lever 66 returns to the regeneration state shown in FIG. 6, so that the head base 7 also returns to the regeneration position and the regeneration operation can be performed again. Further, if the stop button is operated directly from the review operation state, the stop state shown in FIG. 4 is returned.

Although the queue operation is not particularly shown, the operation is the opposite to the review operation, and the fast forward/rewind lever 69 is moved in the opposite direction of arrow F, and the other operation piece 79 is moved to the connecting lever 66. It can engage with the operation surface 67 and perform cue operations.

In addition, the stop button in each operation explanation described above,
Playback button (recording button), rewind button, fast forward button, review button (rewind button may also be used) queue button (fast forward button may also be used)
The electromagnetic mechanisms 41 and 44 are controlled by a microcomputer, and its operation is as follows. That is, when the regeneration button is operated in the stopped state, the two electromagnetic mechanisms 41 and 44 are simultaneously excited and released, causing the stopper members 39 and 42 to reciprocate once. In addition, when the stop button is operated from this reproducing state, the two electromagnetic mechanisms 41 and 44 are simultaneously activated and deactivated again,
The stopper members 39 and 42 are reciprocated once. When the rewind button is operated from a stopped state, the electromagnetic mechanism 44 is energized and released, and the stopper member 42 is moved to 1.
make it go back and forth. When the stop button is operated from this rewind operation state, the same electromagnetic mechanism 44 as described above is activated to cause the stopper member 42 to reciprocate once. Further, when the fast forward button is operated from a stopped state, the electromagnetic mechanism 41 opposite to that for the rewinding operation operates to cause the opposite stopper member 39 to reciprocate once. and,
When the review button (rewind button) is operated from the playback state, the electromagnetic mechanism 41 is activated to cause the stopper member 39 to reciprocate once. When the review operation is completed, the electromagnetic mechanism 41 operates again to move the stopper member 39 back and forth once. Further, when the cue button (fast forward button) is operated from the playback state, the electromagnetic mechanism 44 opposite to that described above operates to cause the stopper member 42 to reciprocate once. When the cue operation is completed, the electromagnetic mechanism 44 operates again and the stopper member 4
2 back and forth once. Further, if the stop button is operated directly during the review operation or the queue operation, the two electromagnetic mechanisms 41 and 44 are activated and the stopper member 39 and
42 makes one reciprocation (as a result, one stopper member makes two reciprocations).

In addition, in the above embodiment, the stopper member 3
Although the electromagnetic mechanisms 41 and 44 are used to operate the actuators 9 and 42, the electromagnetic mechanisms do not necessarily have to be used; for example, the stopper members 39 and 42 may be operated directly or indirectly using each operation button. It is something.

Next, to explain malfunction prevention, when the regeneration button is operated to change from the stop state shown in FIG. 4 to the regeneration state shown in FIG. This is normal, but for some reason they are not excited at the same time.
First, when one electromagnetic mechanism 41 is excited and then the other electromagnetic mechanism 44 is excited, the fast forward/rewind lever moves in the direction of arrow G (state as shown in Fig. 8), and then While returning in the direction of arrow F, the reproduction operation lever 54 moves the connecting lever 66 in the direction of arrow E. At this time, the operation piece 80 provided on the fast forward/rewind lever 69 is operated as shown in FIG. Since the connecting lever 66 is located on the back side of the surface 67, it becomes as if it is sandwiched between the operation piece 80 and the regeneration operation lever 54 in the middle, and cannot be moved any further, which may cause damage to each member. However, in the operating mechanism of the present invention, the operating pieces 79 and 80 are rotatably provided on the fast forward/rewind lever 69, so the operating piece 80 resists the elasticity of the spring member 84, as shown in FIG. , operation surface 67
The connecting lever 66 is pressed by the back surface 67a and rotates.
It is designed to stay out of the travel path of the Of course, when the operating pieces 79 and 80 are engaged with the operating surface 67, they will not rotate any further due to the action of the stoppers 75 and 76.

Next, to briefly explain the function of the detection device 85, as mentioned above, since the operating mechanism of the present invention can be controlled by a microcomputer, it can reliably detect the position to be taken by each drive lever 45, 49. It is necessary to store it in the microcomputer, and for this purpose the detection device 8
5 is provided, and its operation is shown in Figure 10~
To explain using the simplified drawing of FIG. 12, FIG. 10 shows the stopped state. That is, the state corresponds to that shown in FIG. At this time, the operating parts 96, 97 of the common contact piece 95 are pressed by the detection pins 45a, 49a provided on the drive levers 45, 49, and the contact pieces 91, 92
is in contact with. Therefore, the first switch SW ₁ and the second switch SW ₂ are in the "ON" state, and the third switch SW ₃ and the fourth switch SW ₄ are in the "OFF" state. When the drive lever 4 is operated from this state to the regeneration state shown in FIG.
5,49 moves upward. Therefore, as shown in FIG.
49b, and contrary to the above, the third and fourth switches SW ₃ and SW 4 are turned "ON", and the first and second switches SW 3 and SW ₄ are turned ON.
The switches SW ₁ and SW ₂ are turned "OFF". In addition, in the case of the rewind state shown in FIG. 7 and the review state shown in FIG.
The switches SW ₁ and SW ₄ are turned "ON," and the second and third switches SW ₂ and SW ₃ are turned "OFF." Although not shown, in the case of fast forward or queue status, the first and fourth switches SW ₁ and SW ₄ are turned OFF.
The second and third switches SW ₂ and SW ₃ are turned "ON". That is, when the drive lever 45 is located at the bottom of the drawing, the first switch SW ₁ is turned on, and when it is located at the top, the third switch SW ₃ is turned on, and the other switch is turned on. Drive lever 4
9 is the second switch when located at the bottom of the drawing.
When SW ₂ is in the "ON" position, the fourth switch SW ₄ is in the "ON" position.
Therefore, this switch SW ₁ to SW ₄ is "ON"
By storing the state in the microcomputer, the positions of the drive levers 45 and 49 can be reliably detected.

Therefore, when performing each operation, for example, when the playback button is operated, the drive levers 45 and 49 are first placed in the normal position (generally at the stop position) by each switch _SW1 to _SW4 . If it is normal, the electromagnetic mechanisms 41 and 44 are operated to perform the regeneration operation, but if it is detected that it is in an abnormal position due to a power outage, etc., the drive lever is first set to the normal state. , and then perform the above-mentioned normal operation, which can reliably prevent malfunctions.

As described above, the present invention disposes the first and second interlocking gears 25 and 30 on the left and right sides of the drive gear 13 that rotates with the rotation of the capstan shaft 12, and selectively applies the rotational force of the drive gear 13. When the two interlocking gears 25 and 30 are rotated at the same time, the regeneration operation lever 54 slides and engages the connection lever 66, and the head base equipped with the magnetic head 4 7 to the playback position to perform a playback or recording operation, and when either the first or second interlocking gear 25 or 30 is rotated from the stopped state, the fast forward/rewind lever 69 is activated. The reel bases 10 and 11 are slid to rotate at high speed to perform either fast forwarding or rewinding, and the first and second interlocking gears 2 are moved from the reproducing state to
When one of the interlocking gears 5 and 30 is rotated, the connection lever 66 is disengaged by the playback operation lever 54, and the head base 7 is released from the playback position. The connecting lever 66 with which the operating pieces 79 and 80 move back
The head base 7 is held at a position slightly retracted from the playback position, and the reel stands 10, 11 are rotated at high speed with the magnetic head 4 in contact with the magnetic tape to perform a queue operation or a review operation. Since each operation (playback, recording,
Fast forwarding and rewinding) can be easily performed with a small amount of torque, and the rotational force of the capstan shaft is effectively used to perform soft touch operations. ), it is economical as it does not require large power consumption, and has the advantage that queue and review operations can be performed easily and easily.

Further, the operation pieces 79 and 80 are rotatably provided on the fast forward/rewind lever 69, and are provided with spring members 83 and 8.
4 biased in one direction, even if the connecting lever 66 accidentally comes into contact with the operating pieces 79, 80 when moving from the stop position to the reproducing position, it will rotate against the elasticity of the spring members 83, 84. Since it comes out of the movement path of the connecting lever 66, the connecting lever 66, due to malfunction.
There is also an effect that the operation pieces 79, 80 or the interlocking gears 25, 30, etc. are not damaged.

[Brief explanation of the drawing]

The drawings all show embodiments of the present invention; FIG. 1 is a side view, FIG. 2 is a plan view, and FIG. 3 is an operating mechanism 24.
FIGS. 4 to 9 are explanatory views of the operating mechanism seen from the back to explain the operation of the operating mechanism 24, and FIG. 4 is an explanatory view of the operating mechanism in a stopped state.
Fig. 5 is an explanatory diagram of the operation in progress, Fig. 6 is an explanatory diagram of the playback (recording) state, Fig. 7 is an explanatory diagram of the rewinding state, Fig. 8 is an explanatory diagram of the review state, and Fig. 9 is an explanatory diagram of the malfunction prevention. 10 to 12 are explanatory diagrams for explaining the operation of the detection device 85, FIG. 10 is an explanatory diagram of the stopped state, FIG. 11 is an explanatory diagram of the playback (recording) state, FIG. 12 is an explanatory diagram of the rewind (review) state. 4... Magnetic head, 31a, 31b... Missing tooth part, 7... Head base, 33a, 33b... Locking part, 10... Supply reel stand, 35, 36... Spring member, 11... Take-up reel Stand, 39, 42...
... Stopper member, 13 ... Drive gear, 45, 4
9... Drive lever, 24... Operation mechanism, 54...
Regeneration operation lever, 25... Interlocking gear, 66... Connection lever, 26a, 26b... Missing tooth portion, 69...
Fast forward/rewind lever, 28a, 28b...locking portion, 75, 76...stopper, 30...interlocking gear, 79, 80...operating piece, 83, 84...spring member.

Claims (1)

[Claims] 1. A driving gear, first and second interlocking gears that are provided on the left and right sides of the driving gear and rotate in mesh with the driving gear, and a mechanism that is provided on the first interlocking gear to release the meshing with the driving gear. two toothless parts, two locking parts provided with the same spacing as the two toothless parts, and engaging with one of the locking parts to rotate the first interlocking gear. a first stopper member for preventing one of the toothless portions from opposing the driving gear; a spring member for imparting initial rotation to the first interlocking gear; and a spring member for imparting initial rotation to the first interlocking gear. a first drive lever that engages with a gear and reciprocates as the interlocking gear rotates; and two toothless parts provided on the second interlocking gear to release the engagement with the drive gear. , two locking portions provided with the same spacing as the two toothless portions, and a second locking portion that engages with one of the locking portions.
a second stopper member for preventing rotation of the interlocking gear so that one of the toothless portions faces the drive gear; and a spring member for imparting initial rotation to the second interlocking gear. a second drive lever that engages with the second interlocking gear and reciprocates as the interlocking gear rotates; and a second drive lever that is coupled to the first and second drive levers and moves back and forth as the drive lever moves. A regeneration operation lever that slides and rotates, a connection lever that moves as the regeneration operation lever slides, and a connection lever that directly or indirectly engages with the connection lever and moves to the regeneration position as the connection lever moves. a head base equipped with a magnetic head that moves; a fast forward/rewind lever connected to the playback operating lever and slidable as the playback operating lever rotates; and a fast forward/rewind lever rotatably provided on the fast forward/rewind lever. a pair of operating pieces, a stopper that restricts the rotation of the operating pieces, a spring member that biases the operating pieces in one direction, and a reel that rotates at high speed as the fast forward/rewind lever slides. When the first and second interlocking gears mesh with the driving gear and rotate at the same time, the regeneration operation lever engages with the connection lever to move the head base to the regeneration position and perform the regeneration operation. At the same time, when one of the first and second interlocking gears rotates from a stopped state, the fast forward/rewind lever slides to rotate the reel stand at high speed and perform either fast forwarding or rewinding. When one operation is performed and the head base moves to the playback position and one of the first and second interlocking gears rotates from the playback operation state, the fast forward/rewind lever moves and the playback The engagement of the operation lever with the connection lever is released and the orientation of the head base to the playback position is released, and the operation piece provided on the fast-forward/rewind lever engages with the retracting connection lever to move the head base from the playback position. The reel stand is held in a slightly retracted position and the reel stand is rotated at high speed with the magnetic head in contact with the magnetic tape to enable cue or review operations, and the connecting lever is moved from the stop position to the playback position. The tape recorder is characterized in that when the operation piece comes into contact with the operation piece as a result of the movement, the operation piece rotates against the elasticity of a spring member and can be removed from the movement path of the connection lever. Operation mechanism.