JPS58212642A - Driving mechanism of tape recorder - Google Patents

Abstract

PURPOSE:To transmit precisely turning force and to reduce noises at the time of transmission, by engaging a transmission herical gear engaged with a center helical gear on the side of a prime mover with a constant speed helical gear on a reel turntable. CONSTITUTION:Helical gears are used for a center gear 351, a transmission gear 361 and a constant speed gear 123 on a right reel turntable 12. When a center pulley 35 is rotated, the transmission gear 361 generates buoyancy on its axial I center direction as the property of its helical gear and the center axis of revolution of the transmission gear 361 is paralleled with the center axis IIof revolution of the center gear 351. If only the positioning of the center pulley 35 and the right reel turntable 12 is performed precisely, the transmission gear 361 is easily fitted to a constant speed plate 36.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a drive mechanism for a tape recorder, and particularly to one suitable for soft-touch operation.

[Technical background of the invention and its problems]

2. Description of the Related Art Recently, in fully mechanical tape recorders, various operators for setting the tape in a predetermined running state and stop state have been frequently changed to soft-touch operations. This soft-touch operation of the controller means that, for example, the head chassis and various other movable parts are moved to predetermined positions using the force of a motor, etc. Since the movable member is not moved to a predetermined position, the operating force of the operator can be reduced.

By the way, the soft-touch operation of the tape recorder as described above is still in the development stage, and there is still room for improvement in various respects. For example, conventional soft touch operation mechanisms are large in size and consume a lot of power.
It is only used in some high-end so-called deck-type tape recorders. Therefore, there is a strong desire to develop a soft-touch operation mechanism that is compact, lightweight, and consumes little power, and can be applied to small portable tape recorders that use batteries, such as radio cassettes and tape recorders. There is.

In addition, in connection with the above-mentioned reduction in size and weight and reduction in power consumption, various movable parts are configured so that they can operate organically and smoothly, and safety measures are taken to prevent battery power consumption. , improvements are desired in various respects.

[Purpose of the invention]

This invention was made based on the above circumstances, and provides an extremely good chip recorder that can stably and reliably transmit the rotational force of the motor to the reel stand with a simple configuration, and can also reduce noise when transmitting the rotational force. The purpose is to provide a drive mechanism for

[Summary of the invention]

That is, the present invention includes a first double helical gear on the drive side driven by the rotational force of a motor, and a second double helical gear for transmission that meshes with the first double helical gear. In conjunction with the operation of the tape running operation member, the second double gear is engaged with the third double gear on the driven side which rotates in conjunction with the tape running, thereby causing the tape to run. It is characterized by this.

[Embodiments of the invention]

Hereinafter, an example in which the present invention is applied to a cassette tape recorder will be described in detail with reference to the drawings.

1 and 2 are overall views showing a front side of a cassette tape recorder to be described hereinafter, and a rear side with the main chassis removed from the front side, respectively.

First, in FIG. 1, reference numeral 1 denotes a main chassis formed into a substantially box shape by molding, for example, a synthetic resin material. Approximately in the center of this main shear'/11 are the right and right reel stands 12. J3 are each rotatably supported. A head slider 14 is supported between the cloth and the left reel stand 12, 13 so as to be slidable in the directions of arrows A and B in the figure. Furthermore, the Dozrider J4 is equipped with a recording head (hereinafter referred to as a recording/reproducing head) 15 and an erasing head 16 in line at the lower part of the figure.

Further, a capstan 17 is rotatably supported at the lower right portion of the main chassis 11 in the drawing. This capstan 17 serves as a rotating shaft of a flywheel, which will be described later, provided on the back side of the main chassis 11.

A pinch roller 18 is provided near the capstan 17. The pinch roller 18 is rotatably supported at one end of the pinch lever 181. The other end of the pinch pin J-181 is provided protruding from the main chassis 11 and is fitted onto a circular movement shaft 182, so that it is rotatably supported around the rotation shaft 182. Therefore, the pinch roller 18 comes into contact with the capstan 17 when the pinch lever 181 is rotated clockwise in the figure.

Further, a motor 19 is installed at the right end of the main chassis 110 in the drawing. Furthermore, in the part of the main chassis 1 corresponding to the upper part of the motor J9 in the figure,
A tape counter 2o is installed which is interlocked with the right reel stand J2 via a belt 2o1.

On the other hand, on the left end of the main chassis J1 in the figure, there is a well-known accidental erasure prevention lever 21, an eject slider 22 for holding the cassette lid (not shown) in the closed position, and releasing the holding in the closed position to open it. Song selection (cue)
Nodame solenoid plungers 23 and the like are provided respectively.

Next, in FIG. 2, arranged at the lower part of the figure is an operating section 24 for putting the cassette tape recorder into a predetermined operating state and stop state. This operation section 24
From the left side in the figure, 5TOP operation panel 2 for stopping and ejecting
4. REC operation board for recording 2421 RMw for rewinding
Operation panel 2431 PLAY operation panel 244 for playback. FF operation panel 245 for fast forwarding. -, PA for time stop (pause)
The USE operation plates 246 are arranged in this order, and each is supported so that it can be suppressed in the direction of arrow C in the figure and can be returned in the direction of arrow C. Here, a lock plate 25 is supported on the main chassis 11 so as to be slidable in the directions of arrows E and F in FIG. 2 so as to be substantially orthogonal to each of the operation plates 241 to -246. Of the operation panels 241 to 246, RgC, R-so-called PLAY.

The FF operation plates 242 to 245 are configured to be engaged with the lock plate 25 and locked in the pressed state by the suppression operation. Further, the 5TOP operation plate 241 is not locked by the lock plate 25, but is arranged so that the operation plates 242 to 245 in the locked state are released.
5. Further, the PAUSE operation plate 246 operates independently without being engaged with the lock plate 25 in any way, and is engaged with a known pussy-push mechanism 26 to be locked in the pushed state by the first pressing operation. For example, the reproducing state is temporarily stopped, and the second pressing operation releases the locked state and returns to the reproducing state, for example.

The R seat and FF operation panels 243 and 245 drive a high-speed drive mechanism to be described later to selectively move the left reel stand 13 and the right reel stand 12 in the clockwise and counterclockwise directions in FIG. It functions like rotating the tape and running it in rewind and fast forward mode. Still, the PLAY operation plate 244 drives a constant speed drive mechanism, which will be described later, to slide the head slider 14 in the direction of the arrow in FIG. By press-contacting the tape to the capstan J7 via the tape and rotating the right reel stand 12 counterclockwise in FIG. 1, the tape functions to run in a reproducing state. Further, the REC operation plate 242 drives the constant speed drive mechanism to bring the recording/reproducing head 15° pinch roller 18 and the right reel stand 12 into the same position and rotation state as in the playback state, and drives the tape recorder circuit (not shown). By switching the section to the recording side, it functions as if the tape is running in a recording state. In this case, the RF, C operation panel 24
2, it is not necessary to operate it in combination with the PLAY operation panel 244 (the REC operation panel 242 can be operated alone to enter the recording state).

Further, the erasing head 16 is brought into contact with the tape together with the recording head 15 in conjunction with the Radoslider 14 only during recording, and is not brought into contact with the tape during playback.

Here, as shown in FIG. 2, the capstan 17 is coaxially provided with a flywheel 27 and coaxially provided with a drive gear 28. This cab stump 1f, flywheel 27 and drive gear 28 are
It rotates as a unit. And the drive gear 2
On both sides of 8, a constant speed drive gear 29 and a high speed drive gear 30
is a rotary shaft 291. which is protruded from the main chassis 11.
301, respectively, so as to be rotatable. The constant speed and high speed drive gears 29.30 are respectively meshed with and rotated by the drive gear 28, and some of the constant speed and high speed drive gears 29.30 have teeth, which will be described in detail later. A notch is formed, and this notch is usually used for driving gears. Even if the driving gear 28 rotates, the constant speed and high speed driving gears 29 and 30 do not rotate.

And the above RFC and PLAY operation panel 242°244
When a constant speed tape running operation plate such as the one shown in FIG. and the pinch roller 18 is moved,
In addition, the right reel stand 12 is rotated, and the tape is run at a constant speed. Still above R); W and F
When a high-speed driving operation plate such as the F operation plates 243 and 245 is operated, the high-speed drive gear 30 is switched to the drive gear 2.
When the high-speed drive gear 30 is rotated, the right reel stand 12 and the left reel stand J3 are selectively rotated, and high speed running is performed here. Furthermore, the high-speed drive gear 30 also operates the drive gear 28 when the PAUi operation plate 246 is operated.
It is designed so that it can be rotated by meshing with it.

Here, in the right and left reel stands 12.13, the reel shafts 121.131, which are the centers of rotation thereof, are connected to substantially cylindrical bearing portions 122.131 formed in the main chassis 11.
It is supported by being fitted inside. The right reel stand 12 is provided coaxially with the right reel stand 12.
Constant speed gear 123 and FF gear 124 that rotate integrally with
are provided one on top of the other. Further, the left reel stand 13 is provided with an RF5N gear 133 that is coaxial and rotates integrally with the left reel stand 13. Each of the gears 123. '124.1.33, various gears to be described later are selectively engaged, and the right and left reel stands 12
．． 13 is rotationally driven. Further, in the vicinity of the right reel stand 12, an automatic stop mechanism (hereinafter A
3J (referred to as SO mechanism) is installed.

The overall configuration of the cassette player recorder described here has been schematically explained above, and the specific configuration and operation of each part will be explained in detail below. First, the constant speed drive mechanism will be explained with reference to FIG. 3. That is,
FIG. 3 shows details of the constant speed drive gear 29, and a toothless notch 292 is formed in a part of the periphery of the constant speed drive gear 29, as described above. This notch 2
92 is formed within an opening angle range of about 90° from the rotation center of the constant speed drive gear 29. In addition, the constant speed drive gear 2
A cam portion 293 is formed on one side of 9, and a cam portion 293 is formed on the other side.
Two locking portions 294 and 295 are provided protrudingly. and,
The cam portion 293 includes a substantially flat first portion 296;
A curved second portion 297. Further, of the two locking portions 294 and 295, the locking portion 294 is formed on the inner peripheral side, and the locking portion 295 is formed on the outer peripheral side.

Furthermore, the internal stop portions 294 and 295 are formed to have an opening angle of about 450 with respect to the rotation center of the constant speed drive gear 29.

Here, the constant speed drive lever 32 and the constant speed lock lever 33 are engaged with the cam portion 293 and the locking portions 294 and 295, respectively. The constant speed drive lever 32 and the constant speed lock lever 33 are both protruded from the main chassis 1, fitted onto a round moving shaft 331, and supported rotatably. Of these, the constant speed drive lever 32 has a thick portion 321 and a thick portion 32 formed in a substantially U-shape with the portion fitted onto the rotating shaft 331 as a base, and the inside of the thick portion 32 that is opened. The thin portion 322 is formed and the thin portion 322 faces the cam portion 293 face to face. The inner side of one arm portion 323 of the thick portion 321 of the constant speed drive lever 32 is connected to a retaining portion 3 that abuts the cam portion 293.
24. Furthermore, a driving section 326 for moving the Herado slider 4 is protruded from the tip of the other arm section 325 of the thick section 321 . Furthermore, a long hole 327 is formed in the thin portion 322 so as to escape the rotating shaft 291 of the constant speed drive gear 29 so as not to impede the rotation of the constant speed drive lever 32. The constant speed drive lever 32 is biased to rotate clockwise in FIG. 3 by a torsion spring (not shown) which will be described later, and its engaging portion 324 is pressed into contact with the cam portion 293. .

Further, the constant speed lock lever 33 is provided with a protruding lock portion 332 that selectively engages with the locking portions 294 and 295 of the constant speed drive gear 29 to prevent rotation of the constant speed drive gear 29. has been done. The constant speed lock lever 33 is urged to rotate clockwise in FIG. 3 by a spring (not shown). The constant speed lock lever 1v3 is rotated clockwise in FIG. Here, the above-mentioned constant speed mouth.

When the locking portion 332 of l and t4-ss is locked to the locking portion 294 of the constant speed drive gear 29, the constant speed drive gear 29
A notch 292 faces the mineral gear 28 . At this time, the engaging portion 324 of the constant speed portion/moving lever 32 is connected to the cam portion 2.
93, and the constant speed drive gear 29 is urged to rotate clockwise in FIG.

However, since the lock portion 332 of the constant speed lock lever 33 is engaged with the locking portion 294 of the constant speed drive gear 29,
The constant speed drive gear 29 is not rotated and is not meshed with the drive gear 28.

In this state, the RECt or PLAY operation panel 2
42, 244, the constant speed lock lever 33 is rotated counterclockwise as shown in FIG. 3 in conjunction with the operation, as will be described later. Then, constant speed lock/? −
5stv lock portion 332 is the locking portion 2 of the constant speed drive gear 29
He will be withdrawn from 94. For this reason, the constant speed drive gear 29 is driven at a constant speed and is rotated in the direction of time in FIG. .

4 and 5 show the relationship between the PLAY operation panel 244, the REC operation panel 242, and the constant speed lock lever 33, respectively. First, in FIG. 4, a substantially cylindrical retaining portion 333 is provided protruding from the constant speed lock lever 3'3. A protrusion 334 that engages with the retaining portion 333 of the constant speed lock lever 33 is formed on one side of the PLAY operation plate 244. This protrusion 334 is
When the AY operation plate 244 is operated in the direction of arrow C in FIG. 4, it has a sloped portion 335 that provides relief from the retaining portion 333 of the constant speed lock lever 33. Therefore, when the PLAY operation plate 244 is operated, the retaining part 333 is pressed by the inclined part 335, and the constant speed lock lever 3,'/
is rotated in the counterclockwise direction in FIG. And the above P
When the LAY operation plate 244 is locked to the lock plate 25 in the operated state, the constant speed lock lever 33 is held at the position rotated counterclockwise in FIG. 4. At this time, in the holding position of the constant speed lock lever 33, the lock portion 3
32 is a locking portion 295 on the outer peripheral side of the constant speed drive gear 29
It is arranged so that it is located in the rotation path of the

Next, in FIG. 5, the RgC operation plates 242i and 242t.

It is engaged with an RFC drive slider 34 that is disposed substantially perpendicularly in the operating direction, that is, in the direction of arrow C in FIG. That is, this RCC drive slider 34 is supported by the main chassis 11 so as to be slidable in its longitudinal direction, and is biased rightward in FIG. 5 by a spring (not shown). A locking portion J4J that engages with the locking portion 333 of the constant speed lock lever 33 is formed at the negative end of the RgC drive slider 34. Further, a bent engagement piece 343 is formed at the other end of the REC drive slider 34 and is loosely fitted into a guide hole 342 formed in the RFC operation plate 242. This REC
The guide hole 342 of the operation plate 242 is connected to the REC operation plate 242.
The REC drive slider 34 is configured to be able to slide to the left in FIG. 5 when the REC drive slider 34 is operated in the direction of arrow C in FIG. Therefore, when the REC operation plate 242 is operated, the REC drive slider 34 is slid to the left in FIG. 5, and the engaging portion 333 of the constant speed lock lever 33 is pressed by the retaining portion 341 thereof. Therefore, the constant speed lock lever 33 is rotated counterclockwise in FIG. be. When the REC operation plate 242 is locked to the lock plate 25 in the operated state, the constant speed lock lever 3
3 is held at a position rotated counterclockwise in FIG. In the holding position of the constant speed lock lever 33 at this time, the lock portion 332 is located in the rotation path of the locking portion 295 on the outer peripheral side of the constant speed drive gear 29.

That is, the constant speed lock lever 33 is rotated by the same amount during playback and recording. In addition, as shown in FIG. 3, the constant speed drive lever 32 has a thick wall portion 3, 21 which escapes the engagement portion 333 of the constant speed lock lever 33 and is driven at a constant speed. This prevents rotation of the wheel 32 and constant speed lock lever 33.

A long hole 328 is formed to prevent this from occurring.

Here, the driving portion 326 of the constant speed drive III lever 32 is loosely inserted into a through hole (not shown) formed in the main chassis 11 and extends to the surface side of the main chassis 1, and extends to the surface side of the main chassis 1. As shown in the figure, the head slider J
4 and the pinch lever 181, one end of each of the torsion springs J 4J and 183 are engaged with each other. Each of these torsion springs 141.18
3, the torsion spring 141 has its central portion wound around and supported by a support shaft 142 that protrudes from the portion of the Rad slider 14 to which the pre-recording/re-recording head J5 is attached. In a stopped state, both ends of the torsion spring 141 are connected to the RAD slider 1.
4, respectively, and does not apply a biasing force to the head slider 14 (OJ etc.) to cause it to slide.Here, the head slider J4 At the upper end of Figure 6,
One end of the torsion spring 145 is engaged. This torsion spring 145 has a substantially central portion wound around a support shaft 146 protruding from the main chassis 1, and the other end thereof is locked to a locking portion 147 protruding from the main chassis I). The head slider 14
is biased in the direction of arrow B in FIG. For this reason, the head slider 14 is moved in the direction of arrow B in the figure while in a stopped state, and the drive portion 326 of the constant speed drive lever 32 is pushed in the same direction by one end of the torsion spring 141. Therefore, as previously explained with reference to FIG. 3, the constant speed drive lever 32 is biased clockwise in FIG. If you are inebriated, the constant speed drive lever 3 will move when stopped.
2 can be said to be biased clockwise in FIG. 3 by a torsion spring 145.

Next, the torsion spring 183 is
The center portion thereof is wound around and supported by the rotation shaft 182 of 4-xsx. And the above torsion spring 1
Both ends of the pinch lever 181 are in a stopped state.
They are respectively locked by locking portions 184 and 185 protruding from the pinch lever 181, and do not apply any rotation biasing force to the pinch lever 181. Further, at the lower right portion of the head slider 14 in FIG. 6, there is an engaging portion 148 that protrudes from the pinch lever 181 and engages with the protrusion 186 from the upper blade in the figure.
is formed. Therefore, when the head slider J4 is moved in the direction of arrow B in FIG. 6 in a stopped state, the pinch rollers 181 are rotated and held in the counterclockwise direction in FIG. It is spaced apart from capstan J7.

Here, as shown in FIG. 7, the rotating shaft 191 of the motor shaft 9 has two motor shafts IJz9z formed coaxially and integrally with each other.

193 is fitted. Each of these motor pulleys 192
．． Among the motor pulleys 193, a motor pulley 192 is connected to the flywheel 27 via a belt 194 so as to freely transmit rotational force. Further, the other motor pulley 193 is connected to the center pulley 35 rotatably supported by the main chassis 11 via a belt 195' so that rotational force can be transmitted thereto. A center gear 35 is formed coaxially and integrally with this center pulley 35. Further, a constant speed plate 3 is provided near the center pulley 35.
6 is provided.

The constant speed plate 36 is supported by the main chassis 11 so as to be rotatable about the rotating shaft 352 of the center pulley 35.

A transmission gear 36 meshed with a center gear 35 is rotatably supported on the constant speed plate 36. Here, since the constant speed plate 6 rotates around the rotating shelf 1352 of the center pulley 35, the transmission gear 461 rotates around the rotating shelf 1352 of the center pulley 35.
Even if it is rotated, it is always meshed with the center gear 35.

As shown in FIG. 6, the constant speed plate 36 has a coiled spring 364 between a retaining hook 362 formed at one end thereof and an engaging portion 363 formed on the main chassis 11. The seventh
The transmission gear 3 is biased to rotate counterclockwise in the figure.
-61 is meshed with the constant speed gear 123 of the right reel stand J2. At one end of the constant speed grate 36, a retaining portion 365 is provided to protrude. At the upper end of the head slider 4 in FIG.
A retaining portion 366 having an inclination that engages with the retaining portion 365 from the upper blade in FIG. 7 is formed. Therefore, in the stopped state, the head slider 4 is moved in the direction of arrow B in FIG.
63 presses the engaging portion 365 of the constant speed plate 36 and rotates the constant speed plate 36 clockwise in FIG. 7 against the biasing force of the spring 364, so that the transmission gear 3
61 is spaced apart from the constant speed gear 123.

That is, in the stopped state, as explained in FIG. 6, the head slider 14 is
is lowered in the upward direction B in FIG. 6, and as a result, the pinch lever 18 J75:' is kept rotated counterclockwise in FIG. At the same time, the constant speed grate 36 is rotated clockwise in FIG.
It is separated from 23. Assume that the cassette tape recorder is not put into the playback state in this stopped state, and the PLAY operation panel 244 is operated as shown in FIG.

Then, as explained above, the constant speed lock lever 33 is rotated counterclockwise in FIG. 4, and as shown in FIG.
,? The constant speed drive gear 29 is disengaged from the locking portion 294, and the constant speed drive gear 29 meshes with the drive #ih gear 28.

On the other hand, when the PLAY operation panel 244 is operated, a power supply switch is turned on via a switch slider to be described later, the motor 19 is rotationally driven, and the flywheel 27 and center pulley 35 are rotated as shown in FIG. rotated counterclockwise. Here, the power leaf switch is not limited to the PLAY operation panel 244, but also the REC, total W.

It is turned on via a switch slider in conjunction with the operation of the FF operation panels 242, 243, and 245. As the flywheel 27 is rotated, the drive gear 28 is also rotated counterclockwise in FIG. 3. Therefore, as shown in FIG. 8, the constant speed drive gear 29 is rotated clockwise in FIG. 8 by the rotational force of the drive gear 28. Then, the cam portion 293 formed on the constant speed drive gear 29
The second portion 297 of the constant speed drive lever 32 presses the engaging portion 324 of the constant speed drive lever 32, and the constant speed drive lever 32
It is rotated counterclockwise in the figure.

Therefore, the drive section 326 of the constant speed drive lever 32
As shown in the figure, a torsion spring 141.1E provided on the head slider 14 and the pinch lever 181
Press each end of 13 upward in FIG. Therefore, the head slider 14 is slid upward in the direction A in FIG. 6 through the torsion slide ring 141 against the biasing force of the torsion spring 145.

4 fr-1 The t-inch □R-no sz is rotated clockwise in FIG. 6 via the torsion spring 183.

As shown in FIG. 9, the constant speed drive gear 29 is approximately 3
When the manual constant speed drive lever 32 is rotated by /4 rotation and reaches just before the notch 292 faces the drive gear 28, the manual constant speed drive lever 32 is at the most rotated position in the counterclockwise direction in FIG.

Here, the slide of the upper 8C head slider 4 in the upper eight directions in FIG. ,ru. This can be done, for example, by forming a retaining portion (not shown) on the main chassis 11 at a portion corresponding to the optimal position of the head slider 14, and making the head slider 14 come into contact with the retaining portion. It can be realized if In addition, the above pinch lever 1
Rotate in the direction dI in Figure 6 of 81, pinch roller 18
is defined up to the position where it contacts the capstan 17.

Then, the head slider 14 and pinch lenses-1
21 each movement stroke, constant speed drive Leno-32
The movement stroke for reaching the position shown in FIG. 9 is set to be longer. Therefore, when the constant speed drive lever 32 is rotated to the position shown in FIG. 9, as shown in FIG. At this time, both torsion springs 141 and 183 are pushed up and away from the locking part 144 of the head slider 14 and the locking part 185 of the pinch lever 181.
4 and Pinch Leno-11! , 1 will be generated.

Therefore, the head slider 14 is held by the biasing force of the torsion spring J4J at a position where the pre-recording/re-recording head J5 contacts the tape with optimum pressure. Further, the pinch roller 18 is pressed against the capstan 17 via a tape by the biasing force of a torsion spring 183.

At this time, the constant speed drive lever 32 has its drive section 3.
26, the torsion springs 141, 18
This means that the resultant force of 3,145 urging forces is applied. When the constant speed drive gear 29 is further rotated slightly clockwise in FIG. 9 by the rotational force of the drive gear 28 from the position shown in FIG. 9, the constant speed drive lever is rotated as shown in FIG. The first portion 296 and the second portion 29 of the cam portion 293 have 32 engaging portions 324 formed on the constant speed drive gear 29.
It comes to face the boundary with 7.

Here, as mentioned earlier, when the constant speed drive gear 29 is in the state shown in FIG. All of this urging force is applied to the rotating shaft 291 via the cam portion 293. That is, when the constant speed drive gear 29 rotates before reaching the state shown in FIG.
Although it is urged to rotate counterclockwise at the position shown in the figure, it is rotated clockwise in the figure by the rotational force of the drive gear 280 against the urging force. However, after reaching the position shown in FIG. 9, the constant speed drive gear 29 is driven at the constant speed. The shape of the cam portion 293 and the positional relationship with the rotating shaft 291 are such that the cam portion 293 receives the urging force applied to the cam portions 12 and 12 and is urged to rotate clockwise in FIG. 10. It is set.

Therefore, in the state shown in FIG. 10, the constant speed drive gear 29
is about to be rotated clockwise, but this rotation is caused by the locking portion 332 of the constant speed lock lever 33 causing the constant speed drive gear 2
9 is locked, and the constant speed drive gear 29 and the constant speed drive lever 32 are stably held in the position shown in FIG. This bull, constant speed drive gear 2
The notch 292 of No. 9 completely faces the drive gear 28 so that no rotational force is applied thereto. Therefore, the head slider J4 and the pinch roller 18 are stably held at the positions shown in FIG. 6.

On the other hand, by first sliding the head slider 14 in the direction of the arrow in FIG. Therefore, the constant speed plate 36 is rotated counterclockwise in FIG. 6 by the biasing force of the spring 364. Therefore, as shown in FIG. 7, the transmission gear 361 is meshed with the constant speed gear 123, and the rotational force of the motor 190 is transferred to
3. Belt 195. Center pulley 35. The information is transmitted to the right reel stand 12 via the center gear 35, the transmission gear 361, and the constant speed gear 123, and the right reel stand 12 is rotationally driven in the counterclockwise direction in FIG. It is something that

When the S TOP operation plate 241 is operated in such a playback state, the PLAY operation plate 244 locked to the lock plate 25 is released as shown in FIG.
Y operation plate z plate Filf is slid downward in FIG. 4 and returned to the non-operation position.

At this time, the constant speed lock lever 33 is rotated back clockwise in FIG. 4. Therefore, as shown in FIG.
will be separated from.

Then, the constant speed drive gear 29 moves to the 1st θ as described above.
In the state shown in the figure, the constant speed drive gear 2 is biased to rotate clockwise in FIG. 10 via the constant speed drive lever 32.
9 is rotated clockwise in FIG.
32 to the position where it is locked.

In this manner, the constant speed drive gear 29 is returned to its original stop position, and the constant speed drive lever 32 is accordingly held at its original position, which has been rotated clockwise in FIG. Therefore, the above-mentioned Heads 2 Ida 14 and Vincire/4-181 are the 6th
The constant speed plate 36 is moved in the direction of arrow B and counterclockwise in the figure, and in conjunction therewith, the constant speed plate 36 is rotated clockwise in FIG. Therefore, the recording head 15 is separated from the tape, the pinch roller 18 is separated from the capstan 17, and the transmission gear 361 is also separated from the constant speed gear J 2 J, and is returned to the stopped state.

Next, it is assumed that the cut-chip recorder is put into the recording state in the above-described stopped state, and the REC operation panel 242 is operated as shown in FIG.

Then, as mentioned earlier, the constant speed locking mechanism 33 is rotated counterclockwise in FIG.
is held in the position shown in Figure @6, and the transmission gear 3
61 is meshed with the constant speed gear 123, and chive travel is performed.

However, in this recording state, the erasing head J6 comes into contact with the recording head, and the mechanism thereof will be described later.

In addition, in the recording state as described above, the 5TOP operation panel 2
41, the REC operation plate 242 locked to the lock plate 25 is released as shown in FIG.
The EC operation plate 242 is slid downward in FIG. 5 and returned to the non-operation position. Therefore, the REC drive slider 3
4 is slid to the right in FIG. 5, and accordingly, the constant speed lock lever 33 is rotated clockwise in FIG.

Then, as mentioned above, the head slider 14. The pinch reno J-1111, constant speed grate 36, etc. are returned to their original positions and are in a stopped state.

Next, the high-speed drive mechanism will be explained with reference to FIG. 11. That is, FIG. 11 shows details of the high-speed drive gear 3o, and a toothless notch 302 is formed in a part of the periphery of the high-speed drive gear 30, as described above.

This notch 302 is formed within a range of an opening angle of about 900 degrees from the rotation center of the high-speed drive gear 3o. Further, a cam portion 303 is formed on one side of the high-speed drive gear 3o, and two locking portions 3o4 and 305 are protruded from the other side. The cam portion 303 is composed of a substantially flat first portion 306 and a curved second portion 307. Of the two locking portions 304 and 305, the locking portion 304 is formed on the inner peripheral side, and the locking portion 305 is formed on the outer peripheral side. Furthermore, the inner stop portion 3o4, 305 is
It is formed to have an opening angle of about 450 with respect to the rotation center of the high-speed drive gear 30.

Here, a high speed drive lever 37 and a high speed drive lever 38 are engaged with the cam part 303 and the locking parts 304 and 306, respectively. The high-speed drive lever 37 has a rotating shaft 37 whose substantially central portion is protruded from the main chassis 11.
It is rotatably supported by being fitted into the hole.

At the end of the high-speed drive lever 37, there is a retaining part 372 that comes into contact with the cam part 303 of the high-speed drive gear 3o.
is formed. Further, at the other end of the high-speed drive lever 37, a substantially cylindrical drive portion 373 that engages with a control lever described later is formed. The above-mentioned high-speed driving gear is biased to rotate in the direction of the clock in FIG. .

Further, the high-speed lock lever 38 is rotatably supported by having a substantially central portion thereof fitted onto a rotation shaft 38 protruding from the upper OC main chassis I. A locking portion 38 is provided at one end of the high-speed lock lever 38 to selectively engage with the locking portions 304 and 305 of the high-speed drive gear 30 to prevent rotation of the high-speed drive gear 30.
2 is provided protrudingly. Here, the high speed lock lever 3
8 is urged to rotate clockwise in FIG. 11 by a spring (not shown). The high-speed lock lever 38 is rotated clockwise in FIG. 11 until its locking portion 382 is engaged with the locking portion 304 of the high-speed drive gear 30. When the locking portion 382 of the high-speed lock lever 38 is engaged with the locking portion 304 of the high-speed drive gear 30, the notch 302 of the high-speed drive gear 30 faces the drive gear 28. At this time, high-speed drive Leno-3
7 comes to press the first portion 306 of the cam portion 303, and the high-speed drive gear 30 is urged to rotate in the clockwise direction in FIG. However, since the locking portion 382 of the high-speed lock lever 38 is engaged with the locking portion 304 of the high-speed drive gear 30, the high-speed drive gear 3.0 is not rotated and is not meshed with the drive gear 28. .

At the other end of the high-speed lock lever 38, engaging pieces 3 and 83 are formed to be engaged with the high-speed drive slider 39. This high-speed drive slider 39 is connected to the lock plate 2.
The high speed drive slider 39 is supported by the main chassis 1 so as to be slidable in the left and right directions in FIG. There is a part c that is biased toward the left in the middle, but as will be described later, in conjunction with the operation of the REIW or FF' operation plate 24:i, 245, it is biased toward the right in FIG. 11 against the biasing force of the spring. It is something that can be slid in any direction. Here, when the high-speed drive slider 39 is slid to the right in FIG.
1. Press the retaining piece 381 of the high-speed lock lever 38 in the same direction. Rotate the high-speed lock lever 38 counterclockwise in FIG. Then, the locking portion 382 of the high-speed lock lever 38 is disengaged from the locking portion 304 of the high-speed drive gear 30. Therefore, the high-speed drive gear 30 is connected to the high-speed drive lever 3.
It is rotated in the direction of the time it in FIG.

Figure 12 shows the above Rf! W and FF operation board 243°245
This shows the relationship between the high speed drive slider 39 and the high speed drive slider 39. That is, the high-speed drive slider 39 has the above-mentioned RFW and F.
Engagement pieces 391 are located at positions corresponding to the F operation plates 213 and 245.
, 392 are formed, respectively. And the above Rt
'On one side of the W and FF operation plate 243.245, when the operation plate 243.245 is operated in the left-right direction in FIG.
Slanted portions 393 and 394 are formed to allow the high-speed drive slider 39 to slide in the direction shown in FIG.

As shown in Figure 12, RF? W operation board 24
3, the retaining piece 39 of the high-speed drive slider 39 is pressed by the inclined portion 393, and the high-speed drive slider 39 is slid to the right in FIG. Therefore, in conjunction with the slide of the high-speed drive slider 39 in the right direction in FIG.
2, the locking portion 382 of the high-speed opening lever 38 is disengaged from the locking portion 304 of the high-speed drive gear 30. And the above RPV
When the operation plate 243 is locked to the lock plate 25 in the operated state, the high-speed lock key 38 is held at a position rotated counterclockwise in FIG. 11. At this time, in the holding position of the high-speed lock lever 38, the lock portion 382
is located in the rotation path of the locking portion 305 on the outer peripheral side of the high-speed drive gear 30.

Further, as shown in FIG. 13, when the FF operation plate 245 is operated in the direction of arrow A in the figure, the engagement piece 392 of the high-speed drive slider 39 is pressed by the inclined portion 394, and the high-speed drive slider 39 is moved to the second position. It is slid to the right in Figure 14. Therefore, the high speed lock lever 38 is rotated counterclockwise in FIG.
The locking portion 382 of No. 8 is the locking portion 304 of the high-speed drive gear 30
It is to be separated from.

When the FF operation plate 245 is locked to the lock plate 25 in the operated state, the high speed lock lever 38 is moved to the first position.
It is held in the position rotated counterclockwise in Figure 1. In the holding position of the high-speed lock lever 38 at this time, the lock portion 382 is located in the rotation path of the locking portion 305 on the outer peripheral side of the high-speed drive gear 30. In other words, when rewinding or fast forwarding, the high speed lock lever
38 is rotated by the same amount.

Where is the above-mentioned fast-driving leno? -sr drive unit 373 is
A control lever (indicated by a broken line in FIG. 14) is loosely inserted into a through hole (not shown) formed in the main chassis 11 and extends to the surface side of the main chassis 11, as shown in FIG. It is adapted to be engaged with one side of 40. The control lever 40 is rotatably supported by having its substantially central portion fitted onto a rotation shaft 401 formed in the main chassis 11. A bending engagement part 402 is formed on the upper side of the control lever 40 in FIG. 14 to which the drive part 373 of the i4-37 that is driven at high speed comes into contact. In addition, the above control-40
A bent locking piece 403 to which one end of the torsion spring 41 is locked is formed at the lower end in FIG. The other end of the tone 9 spring ring 4 is wound around a support shaft 4'I' that is protruded from the main chassis 1, and is locked to a locking part 412 that is protruded from the main chassis 1. has been done. Therefore, the control lever 4 is in the 14th position.
Although it is urged to rotate counterclockwise in the figure, the rotation is made to the position shown in FIG. 14.

On the other hand, as shown in FIG. 14, the center.

The pulley 35 is provided with a high-speed gear 353 that rotates coaxially and integrally with the center gear 35. At the middle lower part of this high-speed gear 353 in FIG.
1.422 is located. And the transmission gear 4
2 no.

422 overlap each other and rotate coaxially and integrally, and the transmission gear 421 is connected to the high speed gear 35.
3, and the transmission gear 422 can mesh with the FF gear 124 of the right reel stand 12. Further, the other end of the FF lever 42 is rotatably supported by being fitted onto a rotation shaft 423 projecting from the main chassis 1r. When the FF gear 42 is rotated clockwise in FIG.
They are respectively meshed with the F gear 124.

Furthermore, a substantially central portion of a torsion spring 424 is wound around and supported by the rotation shaft 423 of the FF lever 42 . Both ends of this torsion spring 424 are connected to locking portions 42 formed on the FF lever 42.
5°426 respectively, and the FF lever 42
No rotation biasing force is applied to the shaft.

Here, the FF lever 4 of the torsion spring 424 is located at the upper end of the FF operation plate 245 in FIG.
A retaining portion 427 is formed that can be engaged with the end portion retained by the second retaining portion 426. This engaging portion 427 is set to be at a position slightly downward in FIG. 14 from the end of the torsion spring 424 when the FF operating plate 245 is in the non-operating position. Furthermore, a substantially cylindrical control section 428 is provided protruding from the other end of the FF lever 42 .

This control portion 428 includes first and third arm portions 4o4, 4o5, which are formed in a substantially curved shape at the other end of the control lever 40.
It can be held inside the first arm portion 404 of the two.

Further, an inverse rotation gear 134 rotatably supported by the main chassis 11 is engaged with the R and annular gear 133 of the left reel stand 13. The first reversing gear 134
Transmission gears 431 and 432 rotatably supported by the end of the REVFF lever 43 are located at the bottom in FIG. The transmission gears 431 and 432 have approximately the same diameter and overlap each other so that they rotate coaxially and integrally9, and the transmission gear 43 can mesh with the high speed gear 353, so that the transmission gear 432 It is capable of meshing with the reversing gear 134.

The REW lever 43 is supported by the main chassis 11 so that its substantially central portion is rotatable around the reel shaft 131 of the left reel stand 13. When the REW lever 43 is rotated clockwise in FIG. 14, the transmission gear 431.4s2 is meshed with the high speed gear 353 and the reversing gear 134, respectively.

Further, a substantially central portion of a torsion spring 433 is wound around and supported by the bearing portion 132 of the left reel stand J3. And this tone spring 4330
Both ends have locking portions 4 formed on the RFW lever 43.
34 and 435 respectively, and the R-shaped bar 4
3, no rotation biasing force is applied. At the upper end of the RFW operation plate 243 in FIG. 14, there is formed a retaining portion 436 that can be engaged with the end of the torsion spring 433 that is engaged with the retaining portion 435 of the RLW lever 43. has been done. This retaining portion 436 is
When the RFW operation plate 243 is in the non-operation position, it is set to be in a position slightly extending from the end of the torsion spring 433 to the lower blade in FIG. Further, at the other end of the REW lever 43, a substantially cylindrical control section 4 is provided.
37 is provided protrudingly.

This control section 437 can be held inside the second arm section 405 of the control e-4o.

Here, hook portions 429 and 438 are respectively formed on the FF lever 42 and (jFtFWFF lever 43), and the coiled spring 44 is engaged between both the hook portions 429 and 438, so that the above-mentioned The FF levers 42 and 43 are biased to rotate counterclockwise in FIG.
The rotation of the IW lever 43 is defined as lf''! shown in FIG.

Further, a return slider 45 is arranged at the lower blade portion in FIG. The return slider 45 is supported by the main chassis J2 so as to be slidable in the vertical direction in FIG. 14 (9), and is biased downward in FIG. 14 by a spring (not shown). And the above return slider 4
5 to the lower blade in FIG. 14, the contact pieces 451 and 452 formed at the lower end in the figure
45 and abutting portions 453 and 454 formed at one end of the Rgw operation plate 243, respectively. For this reason, the return slider 45 is
Either one of the FW operation panels 245 and 243 is the 14th
When the lower blade in the figure is operated in the manual direction, it slides in the same direction, and the details will be explained later.
Suppose now that the cassette tape recorder is in the fast forward state and the FF operation plate 245 is operated in the up and down direction in FIG.

Then, the engaging portion 427 of the FF operation plate 245 presses the end of the torsion spring 424 of the FF lever 42 against the lower blade in FIG. At this time, the control section 4 of the FF lever 42
28 controls/? -40, the FF lever 42 is not rotated in the wound direction in FIG. However, since the FF operation plate 246 is slid fully 1 in the direction of arrow A, its engaging portion 42
7 pushes up the end of the torsion spring 424 and releases it from the locking portion 426 of the FF lever 42. Therefore, the torsion spring 424 is
A biasing force is generated against the lever 42 to rotate the FF lever 42 clockwise in FIG.

On the other hand, at the same time as the FF operation plate 245 is operated, the high-speed lock lever is activated as shown in FIG.
The locking portion 382 of 38 is the locking portion 30 of the high-speed drive gear 30
4, and the high-speed drive gear 30 meshes with the drive gear 28.

Also, at this time, the above-mentioned mixed leaf switch is turned on in conjunction with the operation of the FF operation plate 245, so the motor 19 is rotated and the drive gear 28 is rotationally driven in the counterclockwise direction in FIG. Ru. For this reason, the high-speed drive gear 3
o is rotated clockwise in FIG. 11 by the rotational force of the drive gear 28, and as shown in FIGS. 15 and 16,
The second portion 307 of the cam portion 303 presses the engaging portion 372 of the high-speed drive lever 37, causing the high-speed drive lever 37 to rotate counterclockwise in FIG.

Then, as shown in FIG. 17, the drive section s7s of the high-speed drive lever 37 presses the bending engagement section 402 of the control lever 40, causing the control lever 4o to resist the biasing force of the torsion spring 4. and rotate it clockwise in Fig. 17. Therefore, the restriction on the control section 428 of the FF switch 42 by the first arm section 404 of the control lever 4o is released, so that the FF switch 42 is rotated by the rotation applied by the front spring 424. Due to the biasing force, the 17th
It is rotated clockwise in the figure.

The transmission gears 421 and 422 are connected to the high speed gear 353.
and FF gear 124, respectively. For this reason,
The rotational force of the motor 19 is applied to the belt J 9.5 and the center pulley 35. High speed gear 353, transmission gear 421.42
2 and the FF gear 124, the right reel stand 12 is rotated at high speed in the counterclockwise direction in FIG. 17, and the tape is fast-forwarded.

Here, when the high speed drive gear 3o is rotated approximately 3/4, as shown in FIG.
05 is locked to the a-lock portion 382 of the constant speed lock gear 38, and the notch 30-2 of the high-speed drive gear 30 faces the drive gear 28, preventing rotation of the high-speed drive gear 3o.

At this time, as is clear from FIG. 17, the high-speed drive gear 3o receives the biasing force of the torsion spring 41 of the control lever 4o, and the biasing force of a spring (not shown) that applies a rotational biasing force to the high-speed drive lever 37 itself. The resultant force is applied via the cam portion 303. This combined biasing force is applied to the cam portion so as to act to rotate the high speed drive gear 30 clockwise in FIG. The shape of 3o3 etc. is set. Therefore, the locking portion 305 of the high-speed drive gear 3o is pressed against the locking portion 382 of the high-speed mouth and flavor 38, and is stably held at the position shown in FIG. 18, so that the tape fast-forwarding state is continued.

In such a tape fast forwarding state, the 5TOP operation panel 2
41, the FF operating plate 245 is returned to the non-operating position, so the high-speed locking lever z4 3g is rotated clockwise in FIG. 18 and returned to its original position. For this reason,
The locking portion 382 of the high-speed lock lever 38 is disengaged from the locking portion 306 of the high-speed drive gear 3o, and is placed in a position corresponding to the locking portion 304. Therefore, as described above, the high-speed drive gear 3o is rotated clockwise in FIG. Part 38
2, the rotation is stopped and returned to the original position. For this reason, the high-speed drive lever 37, control lever 40, etc. are also returned to the stop positions shown in FIG. 14, and are brought to a stop state here. It is.

Further, it is assumed that the REIW operation plate 243 is operated in the upward direction in FIG. 14 while the cassette Teso recorder is not in the rewinding state. Then, the engaging portion 436 of the REIW operation plate 243 engages the torsion ring 4 of the REW lever 43.
Press the end of 33 upward in FIG. At this time,
Since the control portion 437 of the RIM lever 43 is locked inside the second arm portion 405 of the control lever 40, the RFW lever 43 is not rotated in the clockwise direction in FIG. However, since the R so-called operating plate 243 is sufficiently slid in the direction of the arrow A, the end of the torsion spring 433 is pushed up by the engaging portion 436, and the RgW lever 4 is pushed up.
3 is released from the locking portion 435. Therefore, the torsion spring 433 generates a biasing force against the Rff lever 43 to rotate the RIiW lever 43 clockwise in FIG. 14.

At the same time as the REW operation panel 243 is operated,
As mentioned above, as shown in FIG.
04, and the speed drive gear 30 is meshed with the drive gear 28. Therefore, as described above, as shown in FIG. 19, the high speed drive gear 30 is controlled via the high speed drive lever 37.
0 is rotated clockwise in FIG. Then, the RIM lever 4 is moved by the second arm portion 405 of the control lever 40.
Since the restriction on the control unit 437 of No. 3 is released, the RFW lever 43 is rotated clockwise in FIG. 19 by the rotation urging force previously applied by the torsion spring 433. The transmission gears 437 and 432 are meshed with the high speed gear 353 and the reversing gear 134, respectively.

Therefore, the rotational force of the motor 19 is transferred to the belt 195. Center pulley 35. High speed gear 353. Transmission gear 43 J
, 4321 is transmitted to the left reel stand 13 via the reversing gear 134 and the REW gear 133, the left reel stand 13 is rotated at high speed clockwise in FIG. 19, and tape rewinding is performed here.

Then, when the high-speed drive gear 30 is rotated about 3/4 of a turn, the high-speed drive gear 30 is stably held at the position shown in FIG. 18, as described above, and the tape rewinding state continues. It is something.

In addition, in the above-mentioned chive rewind state, the previous i1: 5
When you operate the TOP operation panel 241, the RF? W operation board 24
3 is returned to the non-operating position, and in conjunction with this, the high-speed lock lever 38 is returned to the return position. Therefore, the high-speed drive gear 30 is returned to its original position, so the high-speed drive lever 3
7, the control lever 40, etc. are also returned to the stop positions shown in FIG. 14, and are in a stopped state here.

Next, a case where the PAUSE operation panel 246 is operated will be explained. That is, as shown in FIG.
On one side of the USE operation panel 246, there is a high-speed lock lever 3.
A retaining portion 385 is formed that can engage with one end portion of a torsion spring 384 whose center portion is wound around the 80 rotation shaft 381. And the above Torsion Sgeling 384
When the PAUSg operating plate 246 is in the non-operating position, its both ends are respectively locked to locking parts 386 and 387 formed on the high-speed lock lever 38, and the high-speed lock lever 5-SS cannot be rotated. It does not have any motivating force attached to it. In addition, when the PAUSE operation plate 246 is in the non-operation position, its retaining portion 385 is connected to the torsion spring 384 at a high speed.
-38 is set to be located at the lower blade in FIG. 20 of the end that is locked by the locking part 386.

Now, with the cassette tape recorder in the playback state shown in FIG. 6, the pAt78g operation panel 2
46 in the direction of the arrow in FIG. Then, the engaging portion 385 of the PAUSg operation plate 246 presses the end of the torsion spring 384 upward in FIG.
do. For this reason, the high-speed lock lever 38 is rotated in the counterclockwise direction in FIG. 20, and as previously shown in FIG.
0 is released from the locking portion s 04 Qh, and the high-speed drive gear 30 is anastomosed to the drive gear 28 .

At this time, the high-speed lock lever 38 is rotated counterclockwise in FIG. 20, and its locking portion 382 is rotated as shown in FIG.
until it reaches the rotation path of the locking portion 305 of the high-speed drive gear 30. However, since the PAUSE operation plate 246 is sufficiently slid in the direction indicated by the arrow in FIG. Ru. Therefore, the torsion spring 384 generates a biasing force against the high-speed lock lever 38 to rotate the high-speed lock lever 38 in the counterclockwise direction in FIG.
It is held in the position shown in the figure. In addition, the PAUSE operation panel 2
46 is locked in the operating position by the previously described known bush-push mechanism (not shown).

When the high-speed drive gear 30 is rotated clockwise in FIG. 11 by the rotational force of the drive gear 28, the control is performed as shown in FIGS. 17 and 19. rotated in the direction.

Here, as shown in FIG. 21, at one end of the control lever 40, there is a third arm portion 406 that can be engaged with a rotating shaft 187 for rotatably supporting the pinch roller 18 on the Vinci lever knob 81. At the same time, a bent engagement piece 407 that can be engaged with a protruding piece 149 formed on one side of the head slider 4 is formed. 'i! Further, the constant speed plate 36 is formed with an engaging portion 367 that can be engaged with the outside of the first arm portion 404 of the control lever 40.

Therefore, in the playback state shown in Figure 6, the PAU S
When the E operation plate 246 is operated and the control lever 4° is rotated in one direction as shown in FIG. 407 is the rotating shaft 187 of the pinch roller J8 and the head slider 14
2. Press the protruding pieces 149, respectively. However, the pinch lever 181 and the head slider 14 are moved counterclockwise and downward in FIG. 21 against the biasing force of the torsion springs 18.? The pinch roller 18 is returned to a position where it lightly contacts the tape, and the pinch roller 18 is separated from the capstan 17.The engaging portion 367 of the constant speed plate 36 is still pressed by the outside of the first arm portion 404 of the control lever 40. Therefore, the constant speed plate 36 is rotated clockwise in FIG. 21 against the biasing force of the spring 364, and the transmission gear 3
61 is separated from the constant speed gear 123 of the right reel stand 12, the rotation of the right reel stand 12 is stopped, and tape running is temporarily stopped.

In the paused state as above, press PAUSE operation panel 2 again.
46 in the direction of arrow A in Fig. 20, the PAUSE
The operation plate 246 is unlocked at its operation position and returned to its non-operation position. Then, constant speed lock lever 38
is returned to its original position, the high-speed drive gear 30 returns to the stop position as described above, and in conjunction with this, the control lever 40 is returned to the position shown in FIG. 6, returning to the regeneration state again. It is.

Further, the above-described pause operation can be similarly explained in the recording state.

Next, this cassette tape recorder has a PLAY operation panel 244, an FF operation panel 245, and a PLAY operation panel.

When both the printing plate 244 and the REW operation panel 243 are operated (these operations may be performed both at the same time or with a time difference), a fast forward playback (hereinafter referred to as a key) state and a rewind playback (hereinafter referred to as a review key) are activated. state can be realized. First, the key state will be explained. That is, this cue state can be thought of as the operation of the FF operation panel 245 in the playback state, and the high-speed drive gear 30 is rotated in conjunction with the operation of the FF operation panel 245, as shown in FIG. The control lever 40 is rotated clockwise in the figure. For this reason, the head slider 14 is moved from the recording/reproducing head 15 by the control lever 40 in the same way as explained earlier in the paused state.
is pushed down to a position where it lightly contacts the tape, the pinch roller 18 is separated from the capstan 17, and the transmission gear 361 is separated from the constant speed gear 123 of the right reel stand J2. At this time, as the FF operation panel 245 is being operated, as described above, as shown in FIG.
The FF lever 42 is rotated clockwise in the figure, and the transmission gear 4
21 and 422 are respectively meshed with the high speed gear 353 and the FF gear 124, the right reel stand J2 is rotated counterclockwise in FIG. 22, the tape is fast-forwarded, and a cue state is established.

Next, the review status will be explained. In other words, this review state can be thought of as operating the REW operation panel 243 in the playback state, and the high-speed drive gear 3° is rotated in conjunction with the operation of the RIIM operation panel 243, and in conjunction with this, the state shown in FIG. As shown, the control lever 4o is rotated clockwise in the figure. Therefore, in the same way as explained above in the paused state, the head slider 14 is pushed down by the control lever 40 to a position where the recording/reproducing head J5 lightly contacts the tape, and the pinch row 218 is separated from the capstan 17. , and the transmission gear 361 is separated from the constant speed gear 123 of the right reel stand 12. At this time, R Utsuo version board 243
As mentioned earlier, the 23rd
As shown in FIG.
(not shown in FIG. 23) is rotated clockwise in FIG. 23, the tape is rewound, and the review state is established.

Here, in this cassette tape 1/coder, as described above, the erasing head 16 is not brought into contact with the tape during playback, but is brought into contact with the tape during recording. This is because the erase head 16 is a so-called magnet erase head using a permanent magnet. Therefore, a mechanism for causing the erasing head 16 to contact or not contact the tape during playback and recording will be described. That is, as shown in FIG. 1 again, the erasing head 16 is attached to the other end of an erasing lever 162 whose one end is rotatably supported by a rotation shaft 161 provided on the head slider 14. has been done.

This erasing lever 162 has a central portion that is connected to the rotation shaft 1.
61, and both ends are connected to a locking portion 163 provided on the wood rider 14 and a locking portion 164 formed on the eraser lever 162. The torsion and the ring 165, which are respectively locked, are urged to rotate clockwise in FIG. 1, and the rotation is made to the position shown in FIG.

A substantially columnar control section 166 is protruded from the lower portion of the erasing lever 162 in which the erasing head 16 is attached in FIG. The control unit 166 is connected to the RεC operation plate by loosely inserting it into a through hole (not shown) formed in the main chassis 1 and a through hole 167 formed in the REC operation plate 242 as shown in FIG. It extends to a position where it can engage with a bent engagement piece 461 formed at the lower end in FIG. 24 of the REC slider 46 arranged in parallel with 242. The REC slider 46 is supported by the main chassis 11 so as to be slidable in the vertical direction in FIG. 24. The REC slider 46 is biased toward the lower blade in FIG. 24 by a spring (not shown), but when the REC slider 46 slides toward the lower blade in FIG. The tttlJN portion 76e of the erase head □<-1e2.

In FIG. 24, it is defined to be located slightly in the direction of force.

When the RgC slider 46 is slid to the lower blade in FIG. 24, it turns on a REC switch (not shown) for switching the not-shown chip recorder circuit section to a recording state.

Here, a rotation shaft 462 is installed approximately in the center of the RgC slider 46. And this rotation axis 462
A REC lever 47 is rotatably supported.

This RI! , on one side of the C lever 47 is a protrusion 4 that is loosely fitted into a through hole 463 formed in the RFC slider 46.
71 is formed. Further, on one side of the REC lever 47, a guide portion 472 is formed in the lower part of the protrusion 471 in FIG.
A retaining portion 473 (shown enclosed by a hatch in FIG. 24) that is loosely fitted inside is provided in a protruding manner. Here, the guide section 4
72 is formed into a long rectangular shape in the vertical direction in FIG. 24, and a stepped portion 474 is formed on the left side in the figure.

The RF and C levers 47 are urged to rotate in the clockwise direction in FIG. 24 by an unillustrated suge ring, but this rotation is caused by the engagement portion 473 being pushed against the lower side portion of the guide portion 472 in FIG. 24. It is done until it comes into contact. Also, upper 6th R
A retaining portion 475 is formed protruding from the lower part of the EC lever 47 in FIG.

Then, the 24th part of the engaging part 475 of the RIC lever 41 is
A drive section 4111 formed at one end of the RgC drive lever 48 is located at the bottom of the figure. This RECEC drive section bar 48 is formed in a dogleg shape, and its corner portion projects from the main chassis 11 and is rotatably supported by a circular movement shaft 482. Therefore, when the RE:C drive section-Z-4g is rotated clockwise in FIG.
comes into contact with the engaging portion 475 of the REC lever 47, but as shown in FIG. In the state, the engaging portion 475 of RL':C-42
is not opposed to the drive portion 481 of the Rgc drive lens 4-48 and is not engaged with it. In addition, the above REC
A long hole 483 is formed at the other end of the drive lens ζ-48. In the elongated hole 483 is the constant speed drive.
A protrusion 484 formed at the end is loosely fitted.

Further, on one side of the REC operation panel 242, the REC
When the operating plate 242 is operated in the vertical direction in FIG. 24, it engages with the engaging portion 473 of the REC lever 47, and the R
A sloped portion 476 is formed that allows the EC lever 47 to be rotated counterclockwise in FIG. 24.

Now, in the state shown in FIG.
If 0 is operated in the direction of arrow A in the figure, then the 25th
As shown in the figure, the retaining part 473 of the REC recorder 47 is pressed by the inclined part 476 of the REC operation plate 242,
When the engaging part 475 of the REC lever 47 is placed in a position not facing the step part 474 of the REC lever 47, the engaging part 475 of the REC lever 47 is placed in a position facing the moving part 4.8 of the RECEC driving part bar 48. As described above, when the constant speed drive lever 32 is rotated counterclockwise in FIG. 24 by operating the REC operation plate 242, the image shown in FIG. As shown, the RICIC drive bar 482
At the middle of figure 6, the name is rotated in the direction of the hands. Therefore, the driving section 481 of the RFC drive unit 48 pushes up the engaging section 475 of the REC lever 47, so that the REC slider 46 is slid in the direction of arrow A in FIG. At this time, the head slider 14 is slid to the position shown in FIG. 6 in conjunction with the constant speed drive lever 32, so that the erasing head 16 attached to the head slider 14 via the erasing head lever 162 is slid in the same direction and comes into contact with the tape.

On the other hand, in the state shown in FIG.
44, the REC is activated via the constant speed drive lever 32.
The EC drive section bar 4 is rotated clockwise in FIG.

However, the RECEC drive section bar 48 moving section 481 and the RE
Since it is not in a position opposite to the engaging part 475 of the C lever 47,
The moving part 481Fi of the RECEC driving part bar 48 does not come into contact with the engaging part 475 of the REC gear 47, and the REC slider 4eld does not slide in the direction of arrow A in FIG. 24. At this time, the head slider 1 is moved by the action of the constant speed drive lever 32.
4 is slid to the position shown in FIG. In other words, if 1 in FIG. 24, the erasing head lever 1620 rotates,
61 is moved in the vertical direction in FIG. 24, and the erase head/#-162 is also moved in the same direction. However,
Since the REC slider 46 is not slid in the direction of arrow A in FIG. It will be done. To prevent this, the erasing head lever 162 is rotated counterclockwise in FIG. 24 against the biasing force of the torsion spring 165 shown in FIG. 1, so that the erasing head 16 does not come into contact with the tape. done to.

Therefore, according to the configuration shown in FIG. 24, the REC slider 46 for regulating the position of the erasing head 16 during recording and playback is driven at a constant speed to move the head slider 14. Since I used force to slide it, the composition is extremely organic and there is no waste.
Further, the operation of the RFC and PLAY operation panels 242 and 244 does not become difficult, and is suitable for soft-touch operation. In this regard, using a magnetic erasing head as the erasing head 16 in particular simplifies the tape recorder circuit and eliminates the need for a connecting wire between the erasing head J6 and the tape recorder circuit. This has the advantage that the head slider 14 is not subjected to unnecessary side pressure or the like due to the connection line. However, in the past, magnet 2. As a means of regulating the blunt position of the erase head during recording and playback, the erase head is linked directly to the Ic control and PLAY control, etc., but the operation of the REC and PLAY controls becomes difficult and the software It is not suitable for touch operation.

Therefore, as shown in FIG. 24, by sliding the REC slider 46 for regulating the position of the erase head groove using the driving force of the constant speed drive lever 32, the RFC, PI, AY operation plate 242. The magnetic eraser can be used in a soft-touch operated cassette tape recorder, which has the above-mentioned advantages, without having to perform H.244 operations.

Next, as shown in FIG. 27, a control cam portion 298 is formed on the constant speed drive gear 29. The control cam portion 298 is formed so as to overlap the cam portion 293 of the constant speed drive gear 29, and is formed in the substantially flat first portion 2.
98@ and a curved second portion 298b. Further, a sub-chassis (not shown) is arranged in parallel with the main chassis 1 . A release lever 49 is rotatably supported on this sub-chassis. The release lever 49 has its base 49 fitted into and supported by a rotating shaft 492 protruding from the sub-chassis. The release lever 49 has first to third extending portions 493 to 495 formed from its base portion 491.

Of these, the first extending portion 493 is connected to the REW lever 43.
It is configured to be able to engage with an engaging portion 43th that protrudes from. Further, the second extending portion 494 is capable of engaging with an engaging portion 42h provided protrudingly from the FF lever 42. Further, the third extending portion 495 can be engaged with the control cam portion 298 of the constant speed drive gear 29. The release lever 49 has a central portion wound around its rotation shaft 492, and both end portions include a locking portion 496 formed on the release lever 49 and a locking portion 497 protruding from the main shear 711. The 27M is rotated in the counterclockwise direction by torsion springs 498 respectively engaged with the 27M. The release lever 49 can be rotated counterclockwise in FIG. 27 until it reaches the position shown in FIG.

Here, as described above, in a state where the locking part 294 of the constant speed drive gear 29 is locked with the lock part 332 of the constant speed lock lever 33, the control cam part 2 of the constant speed drive gear 29
The first portion 298a of the release leg 49 is positioned opposite the third extension 495 of the release leg 49.

In this state, for example, when the REW operation panel 243 is operated, the cassette tape recorder enters the tape rewinding state as shown in FIG. 19. Suppose now that the cassette tape recorder is rewinding the tape and the PLAY operation panel 244 is operated as shown in FIG. 28 in order to perform a review operation. Then, by operating the PLAY operation plate 244, the constant speed drive gear 29 is brought into mesh with the drive gear 28, as described above.
It is rotated clockwise in FIG. At this time, the third extending portion 495 of the release lever 49 is suppressed by the second portion 298b of the control cam portion 298 of the constant speed drive gear 29. Therefore, the release lever 49d is rotated clockwise in FIG. 28 against the urging force of the torsion spring 498. At this time, the first extending portion 493 of the release lever 49 is engaged with the engaging portion 43m of the RLW-lever 43, and the R)W lever 43 is rotated counterclockwise in FIG. 28. For this reason, transmission gear 4,'+
1 and 432 are separated from the high speed gear 353 and the reversing gear 134, and the rotation of the left reel stand 13 is temporarily stopped.

Thereafter, the constant speed drive gear 29 is rotated approximately 3/4 of a turn, and the first
When the control cam portion 298 is held in the position shown in FIG.
Since the first part 298 of the release lever 491rJ is located opposite the third extension part 495 of the release lever 49, the release lever 491rJ is rotated counterclockwise in FIG. and returned to its original position. Therefore, the first extending portion 493 of the release lever 49 is
Since the EIW lever 43 is disengaged from the engaging portion 43IL, the REW lever 43 is rotated in the chronological direction in FIG. 28, and the transmission gears 431 and 432 are meshed with the high speed gear 353 and the reversing gear 134, respectively. The left reel stand 13 is then driven to rotate again. At this time,
The head slider 1 is rotated by the rotation of the constant speed drive gear 29.
It is assumed that the 4° pinch lever 181, the constant speed plate 3°6, etc. are each moved to the playback position, but their movement is regulated by the index 1/54-40 as shown in Fig. 23. - This is what is considered a review action.

Furthermore, when the FF operation panel 245 is operated and the PLAY operation panel 244 is operated to perform a cue operation while the cassette tape recorder is fast forwarding the tape, the operation will be explained in substantially the same manner as above. I can do it.

However, in this case, when the release lever 49 is rotated clockwise in FIG. 28, the second extending portion 494 of the release lever 49 engages with the engaging portion 42m of the FF lever 42, so 42 is rotated counterclockwise in FIG. Therefore, the transmission gears 421 and 422 are disengaged from the high speed gear 353 and the FF gear 124, and the rotation of the right reel stand 120 is temporarily stopped.

When the constant speed drive gear 29 is held at the position shown in FIG.
21 and 422 are brought into mesh with the high speed gear 353 and the FF gear 124, respectively, and the right reel stand J2 is rotationally driven again. At this time, go to the above.

Toss slider 14. The positions of the pinch lever 181, constant speed plate 36, etc. are regulated by the control lever 4o, and a cue state is established here.

Here, as described above, when the PLAY operation plate 244 is operated while the cassette tape recorder is fast forwarding and rewinding the tape, the release lever 49 interlocked with the rotation of the constant speed drive gear 29 moves the right By not transmitting rotational force to the left reel stand z2.13, the load applied to the motor 19 can be reduced, and power consumption can be reduced. That is, when the PLAY operation plate 244 is operated and the constant speed drive gear 29 is rotated, the constant speed drive lever 3
2 is rotated, and the head slider 14 and pinch lever 1
81 is moved to a predetermined position, the driving force for rotating the constant speed drive gear 29 at this time is required to be greater than the driving force for rotating the high speed drive gear 30. In other words, the load applied to the motor 19 is greater when the constant speed drive gear 29 is rotated than when the high speed drive gear 3o is rotated. Therefore, in the tape fast forward and rewind state, the PLAY operation panel 244
When the constant speed drive gear 29 is rotated at the regular rotation angle, the release lever 49 is rotated by 1/l and the % -'J1
By separating the rotational force transmission relationship between 9 and the right and left reel stands 12, 7.3, it is possible to remove the load caused by the motor 19 rotating the right and left reel stands 12, 13 to run the tape. It is possible. For this reason, power consumption is also low, making it suitable for battery-powered cassette tape recorders. Regarding this point, when switching from the high-speed tape running state to the cue and review state without providing the conventional release lever 49, the motor J9 rotates the constant speed drive gear 29 and rotates the right and left reel stands 1.
2.13 is rotated to run the tape at high speed, the load is heavy and power consumption increases. For this reason, in a conventional battery-powered cassette tape recorder, if the normal blood pressure of the battery is 100 digits, the rotational torque of the motor 19 can only be sufficiently generated until the voltage is reduced by 70 digits. %] or less, there is an inconvenience that the rotation of the motor J9 is stopped when switching from the high-speed tape running state to the key and review state.

However, using the release lever 49, the right and left IJ-
By stopping the rotation of the tape tables 12 and 13 and stopping the tape running, it is possible to switch from the tape high speed running state to the cue and review state until the voltage is reduced by about 50%. It is especially suitable for use in portable type cassette tape recorders that use batteries.

Here, as shown in FIG. 27 again, as mentioned earlier, the switch slider 50 is supported on the main chassis 11 so as to be slidable in the vertical direction in the figure. This switch slider 5oh As mentioned above, RgC, R[, PLA
In conjunction with the operation of the Y and FF ridge plates 242 to 245, the power leaf switch 501 is slid upward in FIG. Turn on motor J91k
It is driven by JJ electric. However, the interlocking relationship between the switch slider 5o and each of the ridge plates 242 to 245 for REC, R tiles, PI, AY, and FF' is not shown because it is well known. And the above-mentioned release lenses-
A bent engagement piece 499 that can be engaged with a bent engagement piece 502 formed on one side of the switch slider 5o is formed on the first extension portion 493 of the switch slider 5o. That is, the bifold engagement piece 5o2.499 is engaged with the switch slider 50 so that when the release lever 49 is rotated clockwise in FIG. 27, the switch slider 50 is slid upward in the figure. ing.

For example, if the cassette tape recorder is placed in the student/student state and the PLAY operation panel 244 is operated, the constant speed drive gear 29 changes to the drive gear 2 as described above.
It is meshed with 8. At this time, since the power leaf switch 501 is turned on by the switch slider 5o that is linked to the operation of the PLAY operation panel 244, the motor 19 is rotationally driven, and thereby the constant speed drive gear 29 is rotated. The Herad slider 14, the pinch lever 181, the constant speed plate 36, etc. are moved to predetermined positions,
It is in a playback state. At this time, for example, as shown in FIG.
Suppose that is manipulated. Then, the PLA'Y operation panel 244
is returned to the non-operating position, and along with this, the switch slider 5o is also slid downward in FIG. 27, and the power leaf switch 501 is about to be turned off. However, when the constant speed drive gear 29 is rotated, the release lever 49 is rotated clockwise in FIG.
The bent engagement piece 502 of the release lever 49 is engaged with the bent engagement piece 499 of the release lever 49, and the switch slider 5o is prevented from sliding downward -\ in FIG. Therefore, the power leaf switch 501 is not turned off and the rotation of the motor 19 is not stopped. Therefore, drive gear 2
8, the constant speed drive gear 29 continues to rotate. Here, since the PLAY operation plate 244 has been returned to the non-operating position first, the constant speed drive gear 29 is not locked by the constant speed lock lever 33 even if it reaches the position shown in FIG. It is rotated one complete revolution to the position.

When the constant speed drive gear 29 reaches the stop position, the release lever 49 is rotated counterclockwise in FIG. It is separated from the bent engagement piece 502 at
The rotation of the motor 190 is stopped by returning the switch slider 50 to its original position and turning off the power leaf switch 501. That is, once the constant speed drive gear 29 is engaged with the drive gear 28, the PL
Until the AY operation 8244 is returned to the non-operating position and the constant speed drive gear 29 rotates once, the release lever
9 keeps the power leaf switch 50J in the on state and continues the rotation of the motor 19. Further, the operation of keeping the power leaf switch 501 in the on state by the release lever 49 as described above can be similarly explained when the REC operation panel 242 is operated. Then press the release lever as shown above.
By keeping the power leaf switch 501 in the ON state while the constant speed drive gear 29 is meshed with the drive gear 28 by 49, the constant speed drive gear 29 and the drive gear 2
This makes it possible to prevent the inconvenience of the rotation being stopped while the parts 8 and 8 are still engaged.

Regarding this point, in the conventional cassette Teso recorder, the switch slider 5o is used for REC and RFM.

It is simply linked to the PLAY and FF block plates 242 to 245. For this reason, for example, PLA
When the Y operation plate 244 is operated and the s'i'op operation plate 241 is operated while the constant speed drive gear 29 is meshing with the drive gear 28 and being rotated, as shown in FIG. P
Since the LAY operation plate 244 is returned to the non-operation position, the switch slider 5o is returned in conjunction with this, and the power leaf switch 50 is turned off. therefore,
There is a problem in that the constant speed drive gear 29 and the drive gear 28 are stopped from rotating while being meshed with each other. In particular, if the constant speed drive gear 29 is stopped in the middle of its rotation, it means that the head slider 14, pinch lever 181, etc. are stopped in the middle of being moved to the position shown in FIG. That's true. In this case, the pre-recording/re-recording head 15, the pinch roller 18, etc. are inserted into a head insertion opening and a pinch roller insertion opening formed in a tape cassette (not shown). For this reason, a big problem arises in that the tea cassette cannot be taken out. In order to release such a state, it is necessary to operate the PLAY operation panel 244 again to turn on the power leaf switch 501f and drive the motor J9 with electricity, which is inconvenient to operate.

However, as shown in FIG. 27, the constant speed drive gear 29
Constant speed drive gear 2
9 is rotating, the RT2C or PLAY operation panel 242.
Even if the tape cassette 244 is returned to the non-operating position, by keeping the power leaf switch 501 in the on state, the constant speed drive gear 29 is stopped mid-rotation, which solves the problem that the tape cassette cannot be removed. It is something that can be done.

Next, when running the tape at constant speed during recording and playback, the 29th
As shown in the figure, the center gear 35 of the center pulley 35
As shown in FIG. 30, the transmission gear 36, which is always meshed with the reel 1, is meshed with the constant speed gear 123 of the right reel stand 12. In the case of Jin, the above RPC or PI
, when the AY operation panel 2420244 is operated, motor J9
is rotationally driven, thereby causing the transmission gear 361 to move to the 29th position.
The transmission gear 361 is rotated clockwise in the figure, and the rotated transmission gear 361 meshes with the constant speed gear 123.

Here, as shown in FIG. 31, the center gear 35
Both helical gears are used for the transmission gear 36 and the constant speed gear 123. Therefore, when the center pulley 35 is rotated, a buoyant force is generated in the axial direction of the transmission gear 361 due to the nature of a double helical gear. , is automatically regulated to be parallel to . Therefore, the center pulley 35 and the right reel stand 12 are positioned so that the rotation center axis I of the center gear 351 and the rotation center axis II of the constant speed gear 123 are parallel to each other, and the center pulley 35 and the right reel stand 12 are mounted on the main chassis 1.
1, the transmission gear 361 does not have to be supported by the constant speed plate 36 by positioning its rotational center axis I parallel to the two rotational center axes (1) and (2). That is, the transmission gear 361 has a constant speed grade 3.
If 6 is supported with some wobbling,
When the center gear 351 is rotated, its rotation center axis I
Since it is automatically regulated to be parallel to the rotation center axis H of the center gear 351, there is no support when meshing with the constant speed gear 123. Therefore, it is only necessary to accurately position the center pulley 35 and the right reel stand 12, and the constant speed plate 36 of the transmission gear 361
Since the installation work becomes easier, the assembly work as a whole can be facilitated.

In short, the transmission gear 361 is always engaged with the drive side gear (center gear 35) to which the rotational force from the motor 19 is applied, and the transmission gear 361 is brought into contact with and separated from the driven side gear (constant speed gear 123). By doing so, the above effects can be obtained. Further, by using a helical gear, noise during transmission of rotational force is reduced compared to a normal gear, and it is particularly suitable for audio equipment such as a tape recorder.

And, Riyo Uemachi, ``Meta-wheel'', Transmission gear 3
61 and constant speed gear 123 □As a wheel,
Transmission gear 36 meshed with center gear 351 on the drive side
1 is meshed with the constant speed gear 123.
This is a characteristic feature of this invention.

Next, as explained earlier, the control lever 40 controls the FF lever 42, the 8W reno gear 431, the constant speed plate 3, the tape fast forward, 2 rewind, pause, cue, and review.
61 head slider J4, pinch lever 181, etc., to perform predetermined operations.

Here, when the tape is running at a constant speed, the PAUSE operation plate 2 is pressed.
46, the control lever 40 is rotated clockwise in the figure, as shown in FIG.

At this time, the first arm portion 404 of the control unit 40 is engaged with the retaining portion 367 of the constant speed plate 36, and the constant speed plate 36 is rotated clockwise in FIG. The gear 361 is separated from the constant speed gear 123 of the right reel stand 12, and the rotation of the right reel stand 12 is stopped.Then, the third arm 4oe of the control lever 40 engages with the rotating shaft 187 of the pinch row 218. and the pinch roller 8 is separated from the capstan 17. That is, at the time of temporary stop, the rotation of the right reel stand 120 is first stopped, and then the rotation of the right reel stand 120 is stopped, and then the rotation of the right reel
18 is spaced apart from capstan 17 by a control gear 40.

Then, when pausing like this, first the right reel stand 12
The tape winding is stopped by stopping the rotation of the tape, and then the pinch roller 18 is moved away from the capstan J7. Especially when a pause is made in the recording state, a popping sound is recorded on the tape. This can be prevented.

It is also assumed that the RE%V operation panel 243 is operated while the tape is being played back and a repeat operation is not performed. Then, as explained in FIG. 32, the control lever 40 is rotated in the open direction in the figure, the transmission gear 361 is disengaged from the constant speed gear 123, and then the pinch roller 18 is moved to the capstan J7.
be separated from Thereafter, as shown in FIG. 33, the control unit 437 of the RE and W levers 43
The transmission gears 4 J 1 and 4 :42 are meshed with the high speed gear 353 and the reversing gear 134, respectively, and the left reel stand 13 is rotated. That is, when directly transitioning from the playback state to the review state, the control lever is moved so that the rotation of the right reel stand 12 is first stopped, then the pinch roller J8 is separated from the capstan 17, and then the left reel stand 13 is rotated. The timing is determined by 4o.

Then, when the playback state is directly transferred to the review state, the pinch roller J8 is moved to the capstan J7.
After separating from the capstan 1?, the left reel stand 13 is rotated to run the tape. Also, it is possible to prevent the tape from being pulled apart by the pinch roller 18 and the left reel stand J3.

Therefore, when switching from the tape constant speed running state to the pause state and from the playback state to the review state, the timing can be set using the control lever 4o.
With a simple configuration, a smooth switching operation can be performed without inconveniences such as recording of a sound on the tape or the tape being stretched.

Furthermore, the control lever 40 performs the following functions. That is, assume that, for example, the 5TOP operation panel 241 is operated in the tape fast forwarding state shown in FIG. 17. Then, the FF operation plate 245 is returned to the non-operation position, and in conjunction with this, as described above, the control lever 4
0 is rotated counterclockwise in FIG. 17 by the biasing force of the torsion spring 41 shown in FIG. 14, and returned to the original position shown in FIG. 14. For this reason, the control lever 40
The first arm portion 404 of the FF lever 42 presses the control portion 428 of the FF lever 42 against the lower blade in FIG.
2 is rotated counterclockwise in FIG.
2 no.

422 are separated from the high speed gear 1s'ss and the FF gear 124, respectively.

In addition, in the tape rewinding state shown in FIG.
When the operation plate 241 is operated, the RLW operation plate 243 is returned to the non-operation position, and in conjunction with this, the control lever 4o is rotated counterclockwise in FIG. 19 by the action of the torsion spring 41, and as shown in FIG. returned to the indicated position. Therefore, the second arm portion 405 of the control lever 4o is connected to the REW lever 4.
3 is pressed against the lower blade in FIG. 19, the REW lever 43 is rotated counterclockwise in FIG. They will be separated from each other.

Here, the above FF lever 42 and REW L/par 4
3 is always biased in the counterclockwise direction in FIG. 14 by the action of a spring 440 shown in FIG. For this reason,
In the tape fast forward and rewind states shown in FIGS. 17 and 19, the 5TOP operation plate 241 is operated, and the FF and RI
When the i5N operating plate 246 and 243 are returned to the non-operating position, the FF and R
The EW levers 42 and 43 are returned to their original positions by the biasing force of the spring 44. Therefore, the book, the control lever, and the
The reason why the FF and REW levers 42 and 43 are returned to their original positions using the switch 40 will be explained.

First, in the tape fast forwarding state shown in FIG.
24, and are in a position where they are engaged with each other so as to bite into each other.

For this reason, especially when the tape reaches the end, the biting force becomes large near the end, and the 5TOP operation plate 2
Even if the FF operation plate 245 is returned by operating the
4 may be held in a state where they are engaged with each other, and the above-mentioned 42 may not be able to be returned to its original position. Similarly, in the tape rewinding state shown in FIG.
53 and the reversing gear 134, respectively, so as to bite into each other. Therefore, especially when the tape reaches the end or near the end, the biting force increases, and even if the RIiW repeating plate 2 version is returned by operating the 5TOP operation plate 2411, the transmission gear 43 of.

432 is held in a state of meshing with the high speed gear 353 and the reversing gear 134, respectively, and the REV lever 43 may not be able to be returned to its original position by the biasing force of the spring 44. be.

Furthermore, even though such a problem exists, if the biasing force of the spring 44 is increased, the operation of the FF and RIIN operation panels 245 and 243 becomes difficult, which is contrary to the soft-touch operation. .

Therefore, as described above, when the tape is brought from a high speed running state to a stopped state, the return force of the control lever 40 causes the F
By forcibly returning the F, RE, and W levers 42 and 43 to their original positions, the transmission gears 421.4
22 and 431.432 to high speed gear 353. FF gear 1
24 and the high-speed gear 3531 can be separated from the reversing gear 134, respectively, and -operation can be prevented. The control lever 40 is connected to the high speed drive gear 3o.
Since the control lever 4o is driven by the rotational force of
Even if the spring force of the torsion spring 4 that provides a restoring force is increased, the operation of the FF and RFW operation plates 245 and 243 does not become heavy, and is suitable for soft-touch operation. In addition, transmission gears 421, 422 and 43
1.432 can be meshed with the high speed gear 35J, FF gear 124, and high speed gear 3531 reversing gear/wheel 134 so as to bite into each other, so rotational force can be transmitted reliably and smoothly. be.

Here, as mentioned above, one operation in which the FF and RFW levers 4x and 4st are forcibly returned by the return force of the control lever 4o is when the 5TOP operation panel is in the cue and review state shown in FIGS. 22 and 23. The same explanation can be given for the case where 241 is operated.

Further, a case will be explained in which the PAUSE operation panel 246 is operated in the above-mentioned cue and review states. First, FIG. 34 shows a state in which the PAUSE operation panel 246 is operated in the queue state. That is, in this queue state, the high-speed lock lever 38 locks its lock portion 382.
is held at the locked position by the locking portion 305 of the high-speed drive gear 30, so even if the PAUSE operation plate 246 is operated, the high-speed locking gear 38 is not rotated at all and remains in the cue state. will continue. A long hole 5 is provided at the upper end of the PAUSE operation plate 246 in FIG.
11 is formed in the elongated hole 511. - A protruding shaft 612 is loosely fitted to one end of the shifter 51. The other end of the pauser A-57 projects from the main chassis 11 and is rotatably supported by being fitted onto a circular movement shaft 513. A torsion spring 5 is attached to the rotation shaft 513 of the 4-shifter 51.
14 is wound approximately at the center. Both ends of this torsion spring 514 are respectively locked to locking portions 515 and 516 formed on the Bose lever 51.

The end portion of the torsion spring 514 on the side that is locked with the locking portion 515 is attached to a bent engagement piece 455 formed at the upper end portion of the return slider 45 in FIG.
It is extended until it reaches the upper part in FIG. 34. Further, at the lower part of the return slider 45 in FIG.
An engaging portion 456 that engages with the control portion 428 of the F lever 42 is formed.

And now, the P LAY operation panel 244 and the FF operation panel 24
If both 5 and 5 are operated, the tape is run in a queue state as described above. At this time, the contact portion 453 of the FF operation plate 245 is engaged with the contact piece 45 of the return slider 45, and the return slider 45 is slid upward in FIG. 34.

Also, at this time, since the PAUSE operation plate 246 is not operated, the PAU8g operation plate 246 is slid to the upper end in FIG. Since the torsion spring 51 is in a state where it is rotated in the 34th-center direction, the torsion spring 51
4 is in a state where it is not engaged with the bent engagement piece 455 of the return slider 45. In this situation, PAUS
E Operate the operation plate 246 in the direction of the arrow in FIG.
In its operating position, the button shoe push mechanism 26
Suppose it is locked by Then, in conjunction with the operation of the PAUSE operation panel 246, the pause lever 51 moves to the 34th position.
The torsion spring 51 is rotated counterclockwise in the figure.
4 presses the bent engagement piece 455 of the return slider 45, so the return slider 45 is urged toward the lower blade in FIG. At this time, the return slider 45 is prevented from sliding toward the lower blade in FIG. 34 because its abutting piece 451 abuts the abutting portion 453 of the FF operation plate 245. The cassette tape recorder continues in the queue state.

In such a queue state, when the 5TOP operation panel 241 is operated, the PLAY operation panel 244 and the FF operation panel 24
5 is returned to the non-operating position.

For this reason, the return slider 45 is
14, it is slid to the lower blade in FIG. 34. At this time, the FF lever 420 control section 428 is pressed by the retaining section 456 of the return slider 45, and the FF lever 42 is forcibly rotated in the counterclockwise direction in FIG.
The transmission gears 421 and 422 are separated from the high speed gear 353 and the FF gear 24.

Moreover, FIG. 35 shows a state in which the PAtJSF; operation panel 246 is operated in a review state.

That is, in this case as well, as in the queue state, the high-speed lock lever 3B is held at a position where its locking portion 382 is locked with the locking portion 305 of the high-speed drive gear 30, so the PAUSE operation plate 246 cannot be pressed. Even when operated, the high-speed lock lever 38 remains in the review state without being rotated in any way. And the above return slider 4
A retaining portion 458 that can be engaged with a retaining portion 457 formed on one side of the Ry lever 43 is formed on one side of the Ry lever 43 .

And now, the PLAY operation board 244 and the RLW operation board 24
If both 3 and 3 are operated, the tape is run in the review state as described above. At this time, the REW operation panel 243
The contact portion 454 of the return slider 45 is engaged with the contact piece 452 of the return slider 45, and the return slider 45 is slid upward in FIG. Also, at this time, the PAUSE operation panel 2
46 is not operated, the end of the torsion spring 514 is bent into the engagement piece 456 of the return slider 45.
It is in a state where it is not engaged with.

In this state, when the PAUSE operation plate 2 is fully operated 246, the end of the torsion spring 514 presses the bent engagement piece 455 of the return slider 45, so the return slider 45 is attached to the lower blade in FIG. However, when the return slider 45 slides downward in the figure, its abutment piece 452 becomes RW.
It comes into contact with the contact portion 454 of the operation plate 243 and is blocked.

The cassette tape recorder continues to be in the ready state.

In such a review state, when the 5TOP operation panel 241 is operated, the P LAY operation panel 244 and the RFW operation panel 2
43 is returned to the non-operating position.

For this reason, the return slider 45 is
Due to the urging force of 14, it is slid to the lower blade in FIG. 35. At this time, the retaining part 458 of the return slider 45 presses the retaining part 457 of the Rr, W reno 43, and the HB reno 43 is forcibly rotated in the counterclockwise direction in FIG. The transmission gears 431 and 432 are connected to the high speed gear 353.
and is separated from the reversing gear 134.

i.e. in queue or review state and PAUSE
While the operation panel 246 is being operated, the 5TOP operation panel 241 can be operated to select FF or RE, W operation panel 245,
243 is returned to the non-operating position, the control lever 40 is held at the position shown in FIGS. 34 and 35 because the PAUSE operation plate 246 is being operated. For this reason, the control lever 40 controls FF and Rk.
W Reno-4,? , 43 to its original position (since this is not possible, the transmission gear 42
1°422 and 431,432 are high speed gears 353°FF
The gear 124, the high speed gear 3531, and the reversing gear 134 may be meshed with each other and held. Therefore, in such a case, by using the return slider 45, FF and REW are performed. -42, 43f It is forcibly returned to its original position.

Then, control - 40 or return slider 45
etc., when the FF and RFW operation plates 245 and 243 are returned to the non-operation position, the FF and REW levers 42.
43 was forcibly returned to its original position, so the transmission I
! i! ! 1 ton 42, 422, 43, and 432' can be reliably separated from high speed gear 24 and high speed gear 3531 and high speed gear 3531, preventing malfunction. It is something that can be done.

Next, as shown in FIG. 36, the S1'OP operation plate 2
An eject slider 22 interlocked with the operation of the main chassis 1 is supported by the main chassis 1. Here, the above 5T
OP operation board 241 is 11! ! RF: C, RlzW,
In a state in which the ridge plates 242 to 245 of PLAY and F''F are operated in advance, each ridge plate 242 to 245 is unlocked at the operating position in the first operation,
In the second operation, the eject slider 22 is slid downward in FIG. 36 to open the cassette lid (not shown), which is a so-called double inoject function. A retaining portion 22 that can be engaged with one end of the stop lever 52 is formed approximately at the center of the inoect slider 22. This stop leno”
-52 is rotatably supported by having its substantially central portion fitted onto a rotation shaft 521 formed in the main chassis 11. And the above-mentioned Su Tozzoleper 52
The other end is adapted to be engaged from below in FIG. 36 with a retaining portion 522 protruding from approximately the center of the slider J4. □For this reason, when the 5TOP operation plate 241 is operated, the eject slider 22 is slid downward in FIG. 36 in conjunction with this, and the stop reno-ku 52 is rotated clockwise in the figure. Therefore,
Since the other end of the stop lever 52 presses the engaging portion 522 of the head slider J4, the toss slider J4 moves to the third position.
It can be slid downward in Figure 6.

For example, when the P LAY operation plate 244 is operated, the constant speed drive gear 29 is engaged with the drive gear 28 and driven to rotate, as shown in FIG. At this point, the constant speed drive gear 290 is in the middle of rotation (for example, the state shown in Fig. 8)
Assume that the rotation of motor J90 is stopped due to battery power consumption. Then, the constant speed drive gear 29 shifts to the eighth
The rotation is stopped at the intermediate position shown in the figure. At this time, the recording/reproducing head J5, the pinch roller 18, etc. are driven at a constant speed as shown in FIG. This causes the problem that the tape cassette cannot be removed.In such a situation,
5) Operate the TOP operation panel 24) to access the PLAY operation panel 244.
Even if the constant speed drive gear 29 is returned to the non-operating position, the constant speed drive gear 29 does not return to its original position.

However, by operating the S1'OP operation plate 241 again, the eject slider 22 is slid downward in FIG. 36, so the head slider 14 is forcibly moved downward in FIG. is slid to. Therefore, the pinch lever 181 is also rotated in the counterclockwise direction 11 in FIG. 36, and the tape cassette can be taken out.

Therefore, if the rotation of the motor 19 is stopped due to exhaustion of battery power while the constant speed drive gear 29 is in the process of rotating, the tape cassette can be taken out by operating the 5TOP operation plate 241. This configuration allows protection measures to be taken in the event of battery power consumption.Next, the song selection (cue cue) mechanism provided in this cassette tape recorder will be explained. That is, this song selection mechanism detects all the unrecorded parts between songs in the cue and review state described in 5 above, and when the unrecorded parts between songs are detected, the solenoid plunger 23 shown in FIG. 1 is energized and driven. By sliding the front U lock plate 25,
Leaving the LAY operation panel 244 behind, the FF and R counterfeit plates 24.
This is done by unlocking 5 and 243. That is, as shown in FIG. 37, RFW,
Each of the ridge plates 243 to 245 for PLAY and F'F engages with the lock plate 25, and each of the ridge plates 243 to 24
Engagement parts 25 to 25 for locking 5 in the operating position
3 is formed as shown in the figure. Each of the retaining portions 25 to 253 is longer than the engagement interval t of the engaging portion 252 of the PLAY operation panel 244, so that the RFW and FF operation plates 243°245
The engagement interval t' is set to be shorter. Therefore, by sliding the lock plate 25 by a distance t'' which is larger than the engagement interval t' but does not reach the engagement interval t, the FF and REW operation plate 243.
45 can be unlocked and the PLAY operation panel 244 can be left in the locked position.

Here, as shown in FIGS. 38 and 39, the drive piece 23 of the solenoid plunger 23 has a connecting shaft 23.
2 is attached through it.

The connecting shaft 232 is loosely fitted into a through hole 53 formed at one end of the search lever 53. It is rotatably supported by being fitted onto a rotary shaft 532 protruding from the main chassis 1 . Furthermore, an engaging portion 533 that can be engaged with an engaging piece 254 formed at one end of the lock plate 25 is formed at the other end of the search lever 53 . Further, a retaining portion 534 is formed near the retaining portion 533 of the search lever 53 and is engageable with a stop plate 54 attached to the main chassis 1. Further, the other end of the search lever 53 is provided with an engaging piece 255 formed on one side of the lock plate 25, and a third
An engaging portion 535 is extended to prevent sliding to the left in FIGS. 8 and 39.

When an unrecorded part between songs is detected in the key or review state, the solenoid planshaft 23 is energized and the drive piece 23 is pulled upward in the figure, as shown in FIG. The search lever 53 is rotated clockwise in FIG. Then, the retaining portion 533 of the search lever 53 presses the engagement piece 254 of the lock plate 25, causing the lock plate 25 to slide to the left in FIG. Here, the rotation of the search lever 53 in the clockwise direction in FIG. 40 is restricted until its retaining portion 534 comes into contact with the stop plate 54. At this time, the lock plate 25
is slid by the above-mentioned distance t'', and in this state, the retaining portion 535 of the search rapper 53 comes into contact with the engagement piece 255 of the lock plate 25, and the lock plate 25 slides in the left direction in FIG. Therefore, the FF or RFIW operation plates 245, 243 are released from the lock plate 25 and returned to the non-operating position.
44 remains locked to the lock plate 25, and automatic music selection (heading) is performed here.

Therefore, as described above, the rotation of the search lever 53 is restricted by the retaining portion 534 formed on the search lever 53 coming into contact with the stop plate 54. Therefore, the drive piece 2 of the solenoid silan gloss 23
Search retardation regardless of the retraction stroke of 31, J
-53 rotation can be defined, the driving piece 231 of the solenoid plunger 23 can be prevented from being magnetized at the retracted position, and the operating voltage of the solenoid plunger 23 can be guaranteed. It is something that can be done. Further, the locking plate 25 is prevented from sliding to the left in FIG. 40 beyond the position where the retaining portion 534 of the search lever 53 contacts the stop plate 54 by the engaging portion 535 of the search lever 53. be able to.

That is, the above RFW and PLAY.

Each of the ridge plates 243 to 245 such as FF can be operated by soft touch, and is therefore set so that the operating force is extremely light. The lock plate 25 for locking each of the operation plates 243 to 245 at the operation position is also configured to be slid with extremely light force. For this reason,
When the search lever 53 is instantaneously rotated by the solenoid gland gear 23 so that the retaining portion 534 hits the stop grating 54, the lock plate 25 is further rotated by the negative force even when the rotation of the search lever 53 is stopped. It may be slid upward in Figure 41. If this happens, the FF and REV operation panels 245, 24 should not be repaired.
This poses a problem in that not only the PLAY operation panel 244 but also the PLAY operation panel 244 is released.

However, when the search levers 53 are paired, their retaining portions 535 are engaged with the engagement pieces 255 of the lock plates 25, so that the lock plates 25 are moved further than the distance t'' due to the 11 penetration. It is possible to prevent a large slide, and it is possible to prevent a erroneous cueing operation.

Next, this cassette Q, the AS used for the recorder
The O mechanism will be explained. That is, as shown in FIG. 41, the ASO gear 55 is meshed with the center gear 351 of the center pulley 35. This ASO gear 54 is connected to a rotating shaft 55 embedded in the main chassis IIK.
It is rotatably supported by being fitted into the hole.

On one side of the ASo gear 55, a cam portion 552 and a cam portion 55 are provided eccentrically with respect to the rotation shaft 55.
A near the part of the outer periphery of 2 that is close to the rotating shaft 551.
An engaging portion 553 is formed that tapers toward the tip of the ASO gear 55 in the rotational direction.
As shown in FIG. 2, a long hole 561 formed at one end of the ASO detection lever 56 is loosely fitted into the washer 55.
At 4, withdrawal is stopped. This long hole 561 is the 41st hole again.
As shown in the figure, it is formed in a substantially curved shape. Furthermore, an engagement protrusion 562 is formed at one end of the ASO detection lever 56 to be engaged with the cam portion 552 and engagement portion 553 of the ASO gear 55 as described later. moreover,
A curved portion 5 fitted to the circumferential side of the bearing portion 122 of the right reel stand 12 is located approximately at the center side of the ASO detection lever 56.
63 is formed. In addition, the above ASO detection records
A pair of protrusions 564, 56 are provided on both sides of the curved portion 563 of 56.
5 is formed. These protrusions 564 and 565 are adapted to engage with both ends of a friction plate 125 provided on one side of the constant speed gear 123 of the right reel stand 12, respectively. The friction plate 125 is rotated in conjunction with the rotation of the right reel stand 120, but is attached so as to prevent its rotation when a force exceeding a predetermined level is applied.

Further, a long hole 566 is formed near the curved portion 563 of the ASO detection element 56. This long hole 566
Inside is a rotation shaft 56 protruding from the main chassis 11.
7 is loosely fitted. Furthermore, the ASO detection lever 75
A support shaft 568 is provided protruding from the other end of the support shaft 6 . The center portion of the suspension spring 57 is wound around and supported by the support shaft 568. Both ends of this torsion spring 57 are connected to the rotation shaft 567 and the ASO
They are respectively locked to locking portions 57 formed on the detection lever 56. Therefore, the ASO detection lever 56 is biased so that the rotation shaft 567 is loosely fitted into the upper part of the elongated hole 566 in FIG. Further, at the other end of the ASO detection lever 56, a protrusion 569 is formed which can be engaged with a bent piece 581 formed at one end of the ASO damper 58. This ASO slider 58 is supported by the main chassis J1 so as to be able to slide vertically in FIG. 41. Also, the above ASOS Lasda 58
41, a coiled sedge ring 583 is locked between the bent locking piece 582 formed on the negative side and a locking part (not shown) formed on the main chassis 77. Since it is biased upward in the middle, the ASO slider 58 slides downward in the figure to the position shown in FIG. 41.

Further, at the other end of the ASO slider 58, an AGO slider 58 is provided.
An engaging portion 584 that can be engaged with one end of the lever 69 and gF is formed. The ASO lever 59 is formed in an abbreviated shape, and its corner portion is fitted onto a surface m-shaft 591 protruding from the main chassis 1, so that it is rotatably supported.

Further, the other end of the ASO lever 59 faces a bent piece 256 formed at the other end of the lock plate 25.

The operation of the ASO mechanism configured as described above will be described below. First, as shown in FIG.
The Y operation plate 244 is locked to the lock plate 25 at the operation position.
In the playback state where the
The right reel stand 12 is rotated counterclockwise in FIG. 41 by the rotational force of the float 35J. For this reason, the friction plate 12
5 is pressed against the protrusion 565 of the ASO detection lever 56, the ASO detection lever 56 is urged to rotate in the 41st-center clockwise direction about the rotation shaft 567, and the engagement protrusion 562 is pressed against the circumferential side of the cam portion 552 of the ASO gear 55. At this time, the ASO gear 55 is the center gear 35.
Since it is rotated in the direction of time 1 in FIG. 41 with 10 rotational force, the ASO detection lever 56it and the cam part 552 perform rocking motion around the rotation shaft 567, and the deso is stable. Runs in regeneration state.

Assume that the chive reaches the end in the above-described playback state and the rotation of the right reel stand 12 is stopped.

Then, as shown in FIG. 43, the Aso detection lever 56
The biasing force by the right reel stand J2 is no longer applied to. Therefore, the ASO detection lever 56 is rotated counterclockwise about the rotation shaft 567 in the upper part of FIG. The dynamic movement is stopped. At this time, the curved portion 563 of the ASO detection lever 56 is positioned closest to the circumferential side of the bearing portion 122 of the right reel stand 12. However, the center gear 35
) continues to rotate, the ASO gear 55 is in the fourth position.
It is rotated clockwise in Figure 3.

Therefore, the tip of the engaging portion 553 of the ASO gear 55 is A
The engagement protrusion 662 of the SO detection lever 56 comes into contact with the upper part in FIG.

When the ASO gear 55 is further rotated clockwise in FIG. 43, the engagement protrusion 562 is pressed by the outside of the engagement portion 553 of the ASO gear 55, as shown in FIGS. 44 and 45. Therefore, the ASO detection lever 56 is moved counterclockwise in FIG. 44 by the curved portion 563 slidingly contacting the circumferential surface of the bearing portion 122 of the right reel stand 12 against the biasing force of the torsion spring 57. Rotated. Therefore, the protrusion 569 of the ASO detection lever 56 engages with the bent piece 581 of the ASO slider 58, and the ASO slider 58 is slid upward in FIG. 43. Then, AS
The engaging portion 584 of the O slider 68 engages with one end of the ASO lever 59, and the ASO lever 59 is rotated clockwise in FIG. 44. Therefore, the other end of the ASO lever 69 engages with the bent piece 256 of the lock plate 25, and the lock plate 25 is slid to the left in FIG. 43. Therefore, the PLAY operation plate 244 is released from the lock plate 25,
This is where the automatic stop occurs. Further, the automatic stop operation as described above operates not only during playback but also during recording, fast forwarding and rewinding.

Here, as shown in FIG. 46, a protrusion 601 that can be engaged with one end of the ASO control lever 60 is formed at the other end of the A80 detection lever 56. The ASO control lever 60 is formed in an oval shape, and its corner portion is fitted onto a rotation shaft 602 protruding from the main chassis 11, so that it is rotatably supported. A sloped portion 604 that can be engaged with a retaining portion 603 protruding from the high-speed assistance lever 37 is formed on one end side of the A80 control unit 60. When the high-speed drive lever 37 is rotationally driven in the counterclockwise direction in FIG.
The control lever 60 is configured to rotate clockwise in FIG. 46. Further, the other end of the ASOilj control lever 60 is connected to the drive portion 326 of the constant speed drive lever 32.
It is made possible to engage with. Further, the ASO control lever 60 has a coiled spring 606 between a bent locking piece 605 formed at one end i11!1 and a locking portion (not shown) formed at the front main chassis 1. By being engaged, it is urged to rotate counterclockwise in FIG. 46.

When the cassette tape recorder is in a stopped state, that is, when the high-speed drive lever 37 and the constant-speed drive lever 3
2 is in the non-driving position shown in FIG.
Press the protrusion 601 on the ASO detection lever 56 at one end of the control lever 60, and move the ASO detection lever 56 onto the rotation shaft 56.
7 in the clockwise direction in FIG. 46, and the engagement protrusion 562 is held in pressure contact with the Q'' cam portion 552 of the ASO gear 55.Here, the above-mentioned 1c.

Each ridge board 242 such as RFW, PLAY, FF, etc.
245 are operated and the high speed drive lever 37 and constant speed drive lever 32 are rotated counterclockwise as shown in FIG.
Press the inclined part 604 and the other end of the O control lever 6o,
The ASO control lever 6o is rotated clockwise in FIG. 47 against the urging force of the spring 606. For this reason, A
One end of the SO control lever 60 is connected to the ASO detection lever 9-56.
Since it is detached from the protrusion 601, ASO detection is not possible.
The reference numeral 56 is capable of freely swinging and performing the above-mentioned automatic stopping operation.

Therefore, as mentioned above, in the stopped state, the ASO control lever 60 is configured to hold the ASO 56 with its engaging protrusion 562 in pressure contact with the cam part 552 of the ASO gear 55. If the ASo detection lever 56 does not wobble in this state and the tape is allowed to run, the automatic stop operation will not be performed by mistake.
Tape running can be reliably started and malfunctions can be prevented. Further, the ASO control lever 6° is detected by the driving force of the high-speed drive lever 37 and the constant-speed drive lever 32, and is detached from the protrusion 603 of the gear 56, so that the REC is activated.

This does not make the operation of the respective ridge plates 242 to 245 such as Rw, PLAY, FF, etc. difficult. In this regard, conventional cassette tape recorders, REC,
Each block plate 24 for RE'W, PLAY, FF, etc.
The ASO detection lever 56 is held at the position shown in FIG. 46 when stopped by members linked to the operations 2 to 245,
When each of the operation plates 242 to 245 is operated, the above-mentioned member is separated from the ASO detection lever 56 in conjunction with the operation. Therefore, the operation of each of the ridge plates 242 to 245 becomes like a claw by the amount of movement of the above-mentioned members, which is contrary to soft-touch operation.

However, as mentioned above, the high speed drive lever 37 and the constant speed drive lever 3 driven by the rotational force of the motor J90
By rotating the ASO control lever 60 with the driving force of 2, each ridge board 242 such as RFC, RFW, F F, etc.
This feature is suitable for soft-touch operation without making the operations of 245 to 245 difficult.

Furthermore, as shown in FIG. 42 again, one end of the ASO detection lever 56 is supported by the rotation #@551 of the ASO gear 55 loosely inserted into the elongated hole 56 and prevented from being pulled out with a washer 554. ing.

Here, as shown in FIG. 45, the ASO detection lever 56
When the engaging protrusion 562 of the ASO gear 55 is engaged with the engaging part 553 of the ASO gear 55, the Aso detection gear 56 is not only given rotational force in the counterclockwise direction in FIG. 45th
A biasing force is also felt in the lower part of the figure. However, the ASO detection lever 56
The Aso detection lever 56 is supported so that it is loosely inserted into the elongated hole 561 and is prevented from being removed by the washer 554.
is moved downward in FIG. 45 and its engagement protrusion 562 is
It is possible to prevent the O-gear 55 from being disengaged from the engaging portion 553 with a simple configuration, and a reliable automatic stopping operation can be performed.

Regarding this point, in the past, ASO detection was performed and the fourth
In Figure 5 - By bringing the F side into contact with another part, the ASO
Since it is designed to prevent the exposed groove 56 from moving to the solid line in FIG. 49, there is a problem in that the construction becomes complicated and miniaturization cannot be expected.

However, as described above, the rotation i11+s of the ASO wheel 55 is detected in the elongated hole 561 formed in the ASO detection lever 56.
By loosely inserting s1 and locking it with a washer 554, the structure is simple and suitable for downsizing and weight reduction.
This enables reliable automatic stopping operation.

Furthermore, in the cassette tape recorder described here, when the tape reaches the end (starting end from the playback side) in the review state, the Rhw operation panel 242 is automatically returned to the non-operation position and the PLAY operation panel 244 is locked. By holding it directly in your hand, it performs a so-called auto-play operation that switches it to a playback state. That is, in the review IJt, as shown in FIG.
34, respectively. At this time, one end of the q-J7 (2) which is driven at high speed is in the following engagement relationship with the ASO slider 58. That is, the 49th
In the figure, a sloped portion 585 that can be engaged with one end of the high-speed drive lever 37 is formed on one side of the ASO slider 58. Here, in the tape stopped state and the tape constant speed running state, as shown by the dotted chain line in FIG.
The drive lever 17 is the inclined part 585 of the ASO slider 58
is not engaged with. A step portion is formed in the ASO slider 59, and the retaining portion 584 of the ASO slider 58 is opposed to the first step portion 592. Therefore, for example, when the automatic stop operation is performed in the playback state and the ASO slider 58 is slid upward in FIG.
Since the ASO lever 59 engages with the stepped portion 592 of the PL
The AY operation plate 244 is rotated by an amount corresponding to sliding the lock plate 25 beyond the distance (the retention interval t described above) that allows release.

In addition, when the tape is running at high speed, the high-speed drive lever 37 is engaged with the inclined portion 585 of the ASO slider 58, as shown by the solid line in FIG.

The slider 58 is moved to the position shown by the solid line in FIG. At this time, the engaging portion 584 of the Aso slider 58 is
It faces the second step portion 593 of the OV par 59. In this case, an automatic stop operation is performed and the ASO slider 58 is moved to the fourth position.
When slid upward in Figure 9, the engaging portion 584
Since it engages with the second step 593 of SO Renogu-59,
As.

Renogu-59 is RE%V or FF' operation panel 243.2
45 (the engagement interval 1/
) The lock plate 25 is rotated only by the movement corresponding to the slide. However, the amount of rotation of the ASO lever 59 at this time is set to such an extent that the lock plate 25 will not slide to the engagement interval t.

Therefore, in the review state, the ASO slider 58 is set to the fourth position.
Since the position indicated by the solid line in Fig. 9 is 1 red, when the automatic stop operation is performed when the Teso terminal is reached, the lock plate 25 is in the R position.
Since the E, W operation Afi 243t is slid to the unlocking position, an automatic trap playback state is entered, and an autoplay operation is performed here.

Therefore, the ASO slider 58 is regulated to the two positions shown by the dashed line and the solid line in FIG. 49 using the driving force of the high-speed drive ray z-;vy, so that the sliding amount of the lock plate 25 can be varied. , RFW operation panel 243 and PLAY
The autoplay operation can be performed without making the operation of the operation panel 244 difficult. Regarding this point, in the conventional cassette recorder, the position of the ASO slider 58 is regulated in conjunction with the operation of the Rw operation plate 243, and the sliding amount of the lock plate 25 is varied.
This has the disadvantage that the operation of the operation panel 243 becomes difficult. However, by regulating the position of the ASO slider 58 using the high-speed drive lever 37 driven by the rotational force of the motor 19, the RLW operation plate 243
It is possible to perform auto-gray operation without increasing the weight of the screen, making it suitable for soft-touch operation.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without departing from the gist thereof.

〔Effect of the invention〕

Therefore, as detailed above, according to the present invention, the rotational force of the motor can be stably and reliably transmitted to the reel stand with a simple configuration, and the noise generated when the rotational force is transmitted can be reduced. A drive mechanism for the recorder can be provided.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an outline of a cassette recorder to which Hato's invention is applied, Fig. 2 is a plan view showing the main chassis removed from Fig. 1, and Fig. 3 is a constant speed drive. FIG. 4 and FIG. 5 are block diagrams showing the relationship between gears and constant speed drive levers, etc., FIGS. 4 and 5 are block diagrams showing the relationship between the PLAY operation panel, RFC operation panel, and constant speed lock lever, respectively, and FIG. 6 is a configuration diagram showing the relationship between the Herad slider and A plan view showing the relationship between the pinch lever and the constant speed drive lever, and Figure 7 is the motor. A plan view showing the rotational force transmission relationship between the flywheel and the right reel stand, Figures 8 to 10 are respectively explanatory diagrams of the operation of Figure 3, and Figure 11 shows the relationship between the high speed drive gear, high speed drive lever, etc. The configuration diagram, Figures 12 and 13 are R
Fig. 14 is a plan view showing the rotational force transmission relationship during high-speed tape running, and Figs.
1 is an explanatory diagram of the operation, FIG. 17 is a plan view showing the tape fast forwarding state, FIG. 18 is a configuration diagram showing the relationship between the high speed drive gear and the high speed lock lever in the tape high speed running state, and FIG.
Figure 9 is a plan view showing the tape-wrapped urine condition, and Figure 20 is the PA
FIGS. 21 to 23 are block diagrams showing the relationship between the USE operation panel and the high-speed lock lever, respectively, in the temporary stop state 1. FIG. 24 is a configuration diagram showing a mechanism for bringing the erase head into contact with and out of contact with the chip during recording and playback; FIGS. 25 and 26 are explanatory diagrams of the operation of FIG. 24, respectively. , Fig. 27 and Fig. 28 are respectively a configuration diagram and an explanatory diagram of the operation of the release lever, Fig. 29 and Fig. 30 are plan views respectively showing the rotational force transmission relationship during constant speed running, and Fig. 31 is a diagram illustrating the rotational force transmission relationship of the release lever according to the present invention. FIGS. 29 and 3 show an embodiment of the drive mechanism of such a tape recorder.
Side view showing details of each gear in Figure 0, Figures 32 and 33
34 and 35 are plan views showing the state when the PAUSE operation panel is operated in the cue state and review state, respectively. FIG. 37 is a plan view showing a mechanism for returning the head slider to its original position when the battery power is exhausted; FIG. The figures are a plan view and a side view respectively showing the song selection (cueing) mechanism, Fig. 40 is an explanatory diagram of the operation of Figs. 38 and 39, Fig. 41 is a configuration diagram showing the Aso mechanism, and Figs. 42 to 45. The figures are respectively an explanatory diagram of the operation of Figure 41, Figures 46 and 47 are a configuration diagram and an explanatory diagram of the operation of the ASO control lever, respectively, and Figures 48 and 49 are a plan view and its essentials, respectively, showing the autoplay mechanism. It is a side +Ni diagram of the part. 1. Main chassis, 12. Right reel stand, J
3°°°Left reel, 14...Head slider, 15
...Recording head, 16...Erasing head, 17...
Cab stan, 18...pinch roller, J4? ...
Motor, 2o... Tape counter, 2no... Erroneous erasure prevention recorder - 122... Eject slider, 23.
...Solenoid f2 connector, 24...Operation unit, 25.
...Lock plate, 26...Punyuzosh mechanism, 2
7... Flywheel, 28... Driving float, 29.
・・Constant speed drive gear, 3o・High speed drive float, 3J・・
・ASO mechanism, 32...Constant speed drive M! h lever, 33・
...>Me speed lock lever 134 ・R): Cmi speed lock lever 134 ・R): Cmi speed lock lever 134
Ir, 35... Center slider, 36... Constant speed plate, 32... High speed drive lever, 38 River^ speed lock lever -139... High speed drive slider %40... flll
l Control lever, 4 pieces...Torsion spring, 42
...FF lever, 43...RIiW l/par, 4
4... Spring, 45... Return slider, 46...
・RFC slider, 47-REC, <-14B-R
EC drive lever, 49...Release lever-15o...
・Switch slider, 5...Pause lever, 52・
...Stop lever, 53...Search lever, 54.
...Stop plate, 55...ASO gear, 56.
...ASO detection lever, 57...Torsion spring, 58...ASO slider, 59...ASO lever, 6o...ASO control lever Applicant's representative Patent attorney Takehiko Suzue Figure 14 Figure 15 Figure 16: 1n17 B Figure 18 Figure 19 mW Official A Figure 24 Figure 25 Figure 29 Figure 30 Figure 31 Figure 36 Figure 37 If 389I 391 Figure 40 Figure 41 Figure 43 Bad Figure 44 Figure 45 Figure 46 Figure 47 's48 Figure 1-242
24! j 49th II

Claims (1)

[Claims] It has a first double gear on the drive side that is driven by the rotational force of the motor, and a second double gear for transmission that is meshed with the first double gear. A tape recorder characterized in that, in conjunction with the operation, the second two-scrape gears are meshed with the third two-scraper gears on the driven side that rotate in conjunction with tape running to cause the tape to run. Drive mechanism.