JPS60163255A - Tape recorder device - Google Patents

Abstract

PURPOSE:To make assembling work easly by providing the titled device with an almost cylindrical supporting member having elastic collars on both end parts and penetrating the center part of two rotary bodies and holding the two rotary bodies, a frictional member and a spring between both the collar parts of the supporting member. CONSTITUTION:Plural slits (four slits in the drawing) 49d are formed on the upper medium part including the collar part 49a on the supporting member 49 in the longitudinal direction. Consequently, the supporting member 49 can be inserted into a supporting part 35n of a gear 35b from the lower medium part of the drawing, and when the collar part 49a is opposed to a step part 35o of the gear 35b, the collar part 49a is expanded and locked on the stepped part 35o, so that the gears 35b, 35c can be supported under the frictional engagement state. Namely, the gears 35b, 35c, the frictional member 50 and the spring 49c are supported as one unit by the supporting member 49.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a tape recorder device that is oriented toward miniaturization.
In particular, the present invention relates to improvements in mounting means for a rotational force transmission system for tape running.

[Technical background of the invention and its problems]

In recent years, cassette tape recorders have become small and lightweight, making them suitable for carrying, and two-way stereo types that use headphones have become popular. It has been made possible. Currently, this type of cassette recorder has already been developed in smaller formats than compact tape cassettes. In other words, the compact tape cassette is supported and mounted from the part where the head insertion hole and pinch roller insertion hole are formed to the part where the reel hub is provided, leaving the peripheral side of the tape cassette exposed. This makes it extremely compact when no tape cassette is attached, making it more convenient to handle.

By the way, if the cassette tape recorder becomes smaller than the compact cassette as mentioned above, the next thing that will be required is a conventional large cassette tape with auto-reverse function, manual reverse function, automatic stop function, etc. It is also possible to realize various functions provided in a recorder. However, it is of course impossible to apply the various mechanisms used in conventional large cassette tape recorders to compact tape cassettes and other small cassette tape recorders. There is a natural need for the development of a new mechanism suitable for cassette tape recorders, that is, capable of realizing all of the above-mentioned functions without hindering the miniaturization of cassette tape recorders.

On the other hand, simply reducing the size of various parts constituting the mechanism in order to achieve the above requirements will not only make assembly work difficult but also cause malfunctions.

Therefore, there has been a strong demand for the development of a mechanism that can realize the various functions described above without hindering miniaturization, is easy to assemble, and is less likely to malfunction.

[Purpose of the invention]

The present invention has been made based on the above circumstances, and an object of the present invention is to provide an extremely good tape recorder device that simplifies the installation of the rotating body that constitutes the rotational force transmission system of the tape running stop and facilitates assembly work. shall be.

[Summary of the invention]

That is, the tape recorder device according to the present invention includes a first rotating body to which the rotational force of the tape running motor is transmitted;
A tape recorder having a second rotary body that is coaxially frictionally engaged with the first rotary body using a friction member and a spring and transmits the rotational force of the motor to the reel. and a support member that passes through the center of the second rotating body, has a substantially cylindrical shape, has flanges at both ends, and has one end elastically narrowed, the first rotating body, The friction member, the second rotating body, and the sling are all held between flanges formed at both ends of the support member.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the appearance of a small cassette tape recorder to which the present invention is applied. That is, 11 in the figure is a cabinet formed in a substantially box shape, and is formed smaller than the compact tape cassette 12 (indicated by a two-dot chain line in the figure). A cassette lid 13 is supported on the upper surface of the cabinet 1 in the figure. In other words, this cassette lid 13 is formed in the shape of a curved side surface, and one end 13a thereof is attached to the cabinet 1 as shown by the arrow mark in the figure.
, are supported so as to be rotatable in the B direction. The cassette lid 13 is manually rotated by the user, and is lightly locked in the open position when rotated in the direction of arrow B in the figure, and in the closed position when rotated in the direction of arrow B in the figure. The compact tape cassette 12 is securely locked by a locking mechanism which will be described later. Here, the compact tape cassette 12 is connected to the cabinet 11 and the cassette lid as shown in FIG. 1 with the cassette lid 13 closed. 13.

In this case, the con-guctoteno cassette 12 has the part where the well-known head insertion hole and pinch roller insertion hole, which are not visible in the drawing, directed toward the rotational fulcrum of the cassette lid 13, and the pair of reel hubs. The cassette cover 12 is mounted in such a way that the provided portion thereof is sandwiched between the cabinet 11 and the cassette lid 13, and the other portions, such as the back side portion 12a of the handle and both side portions 12b and 12c, are exposed.

The cassette lid 13 is also provided with a stop operator 14 at a portion corresponding to its rotational fulcrum. Playback operator 15. Recording operator 16. A manual reverse operator 17, a display section 18 indicating the tape running direction, and the like are provided. Further, a window portion 19 made of, for example, a transparent acrylic plate is provided at a portion approximately in the center of the cassette lid 13, corresponding to the tape see-through window formed on the attached contact tape cassette 12. The remaining amount of tape, etc. can be visually checked with the cassette lid 13 closed.

Here, the cassette lid 13 is provided with a substantially triangular high-speed tape running operator 20 near the window 19. Although the details will be described later, this tape high-speed running operator is arranged so as to face the tip of one of a pair of reel shafts (not shown) that protrude from the approximate center of the cabinet 1 in the direction of the cassette lid 13. being done. Then, by suppressing this Chive high-speed running control 20f,
One of the reel shafts is pressed in the direction of its axis, and a tape recorder mechanism provided in the cabinet 11, which will be described later, is placed in a tape running state at high speed. However, in this case, the choice of whether to run the tape at high speed in the forward direction (fast forward) or in the reverse direction (rewind) is as follows:
This is done using the manual reverse operator 17.

Further, the other end of the pair of reel shafts is provided for locking the cassette lid 13 in a closed state.

On the side of the cassette lid 13, there is an ejector 2 for unlocking the cassette lid 13 in the closed position.
1 is provided.

Here, the above-mentioned cassette tape recorder is not only capable of recording and reproducing tape, but also can receive radio broadcasts by using a tuner back. In other words, this tuner J? , the tuner circuit section for receiving, tuning, detecting, amplifying, etc. of the Lanoo IN is housed in a casing shaped so that it can be inserted between the cabinet 11 and the cassette lid 13, It is installed between the cabinet 11 and the cassette lid 13 in place of the concrete tape cassette 12 described above. When a desired broadcasting station is selected by operating the tuning dial provided on the tuner back, the received radio waves are detected and amplified, and then connected to the connection terminal provided on the tuner back and the cabinet 1. The signal is introduced into the main amplifier circuit in the cabinet Jl through the connected terminal, and is reproduced by headphones, where the radio broadcast is received.

The back and side parts of the cabinet 11 that cannot be seen in Figure 1 include a headphone jack into which a headphone plug is inserted, a tape-to-lanyard selector switch, a volume adjustment dial, a stereo balance adjustment dial, and a tape type. (For example, normal tape and chrome tape, etc.)
The changeover switch and the reverse function selection switch for selecting whether or not to perform the auto reverse function, etc.
are arranged respectively.

FIG. 2 shows the tape recorder mechanism section of the cassette tape recorder shown in FIG. 1. That is, 22 in FIG. 2 is the main chassis of the tape recorder mechanism section, and the cabinet +, t 11 meat FliV Tsumugi Iri no Zue 1 r approximately the center of the small main chassis 22 = tf-
tt, the pair of reel shafts 23 and 24 are each rotatably supported. Of these, the reel shaft 23 is supported so as to be slidable also in its axial direction, and is adapted to run the tape at high speed as described above. Further, the other reel shaft 24 is connected to the cassette lid 1 described above.
It is offered every 30 days.

Here, on the lower surface side of the main chassis 22 that cannot be seen in FIG. 2, the reel shaft 23.
4, the playback, recording and high-speed tape running operation 15;
16. A tape drive mechanism that rotates at a predetermined rotational speed and direction in response to the operation in 20, a tape running stop detection mechanism that detects the stoppage of tape running, and the manual reverse operator. 17, a forward/reverse switching mechanism for switching the entire running direction of the tape, a motor 25 serving as a power source for each of these mechanisms, etc. are installed. , the second part of the main chassis 22
A pair of cab stans 26 and 27, which are part of the tape drive mechanism, are rotatably supported on the top side in the figure. These pair of cab stans 26 and 27 serve as rotation axes of a pair of flywheels, which will be described later, provided on the lower surface side of the main chassis 22 in FIG. 2, respectively.

A cassette holder 28 is rotatably supported at one end of the main shear 722 in the direction of arrow C in FIG. 2, and the cassette lid 13' is attached to the cassette holder 28. It is. This cassette holder 28 has hold parts 28a and 28b formed at both ends thereof so as to sandwich both ends of the compact tape cassette 12 in the width direction in the thickness direction.

Further, substantially at the center of the cassette holder 28, a recording/reproducing head (hereinafter referred to as a recording/reproducing head) 28c and an erasing head 28d are supported. Of these, the recording/reproducing head 28
c is attached to a head shear 728e that is supported by the cassette holder 28 so as to be slidable in the direction of arrow C in FIG. It is moved forward in the direction of arrow C in FIG. 2 in conjunction with the operation of the operator 15, and in conjunction with this, the recording/reproducing head 28c is moved forward and brought into contact with the tape. The erasing head 28d is moved forward in the direction of arrow C in FIG. 2 in conjunction with the operation of the recording operator 16 and comes into contact with the tape when the cassette holder 28 is in the closed position.

Therefore, when recording is performed by operating both the recording operator 16 and the reproducing operator 15, both the recording/reproducing head 28c and the erasing head 28d are brought into contact with the tape.

Pinch rollers 39 and 30 are rotatably supported on the cassette holder 28 at positions corresponding to the cab stans 26 and 27, respectively. These pinch rollers 29.30 will be described in detail later, but the pinch rollers 29.30 are selectively connected to the capstan 26.2 in conjunction with the switching operation of the forward/reverse switching mechanism.
7. Furthermore, the cassette holder 28 has the stop and play functions.

Each of the recording and manual reverse operators 14 to 17 is supported so as to be freely suppressable. When the cassette lid 13 is attached to the cassette holder 28, each of the operators 14 to 17 is projected to the outside and becomes operable. The playback and recording controls 15 and 16 are both locked at the operating position, and are unlocked by operating the stop control 14. moreover,
The stop operator 14 and the manual reverse operator 17 are
It is not locked in the operating position and always returns to its original position. Further, the tape high-speed running operator 20,
The claw υ reel shaft 23 is also locked at the operating position, and the locked state is released by operating the stop operator 14.

Here, when the cassette holder 28 is rotated in the direction of arrow C in FIG. 28d1 head chassis 2
8e, pinch roller 29.30 is the cassette holder 28
It will be moved along with the

FIG. 3 shows a tape drive mechanism for rotating each of the pair of reel shafts 23, 24f. That is, as described above, the cab stans 26 and 27 serve as rotation axes of the flywheels 31 and 32, respectively. These flywheels 31 and 32 are fitted with a small diameter pulley 25b on which a belt 33 is fitted onto the rotating shaft 25aVC of the motor 25, and a flywheel 3.

32 and a shaft 341 implanted in the main chassis 22
The rotational force of the motor 25 is transmitted by attaching a small diameter pulley 34 which is rotatably supported by L as shown in the figure. Here, the motor 2
5 is a rotating shaft 25 a ?5 in conjunction with the operation of the playback operator 15 and the tape high-speed running operator 20 . ? Third
It is driven to rotate clockwise in the figure. For this purpose, the flywheels 31 and 32 are rotated counterclockwise and clockwise in FIG. 3, respectively. In addition, when recording, the playback operator 15 and the recording operator 16
Since both are operated together, the rotary motor 25 rotates and the flywheels 31 and 32 are also driven to rotate.

Still, when the regeneration operator 15 is operated, the motor 25 is rotated by a panar circuit (not shown), which rotates the rotation shaft 25.
a is controlled to rotate at a low speed, and when the tape high speed running operator 20 is operated, the governor circuit is disconnected and the rotating shaft 25a is controlled to rotate at a high speed, as will be described later. .

Here, a small diameter gear 26a is coaxially fitted into the cab stan 26. This gear 26a is rotated integrally with the flywheel 31 and capstan 26. A large-diameter gear 35b rotatably supported by a shaft 35a implanted in the main chassis 22 is meshed with the gear 26a. In addition, the above shaft 3
A gear 35c having a smaller diameter than the gear 35b is rotatably supported by the gear 5a. And these two gears 35b
, 35c are frictionally engaged with each other and rotate integrally until a predetermined load or more is applied.

Further, a tape running direction switching lever 3 is attached to the shaft 35a.
5 is rotatably supported at approximately the center thereof. However, the rotational operation of the tape running direction switching unit 35 and the rotational operation of the gears J5b*35c are performed completely independently. Further, a bent engagement piece 35d is formed at one end of the tape running direction switching unit 35. When this bent engagement piece 35d is engaged with a reverse slider of a forward/reverse switching mechanism, which will be described later, the tape running direction is switched. In other words, as will be described in detail later, the tape running direction switching mechanism 35 is operated when the forward/reverse switching mechanism is in a state corresponding to forward tape running. When the forward/reverse switching mechanism is in a state corresponding to running the tape in the reverse direction, it is rotated counterclockwise in FIG. 3.

Two shafts 35o and 35f are implanted at the other end of the tape running direction switch 35, respectively. Of these, the shaft 35e has h, two gears s s g p
s 5h is rotatably supported. These two gears 35g and 35h are rotated integrally, and one gear 35g is meshed with the gear 35c. Further, a gear 35i is rotatably supported on the shaft 35f. This gear 35i is meshed with the gear 35h. For this reason, the gears 26a, 35b1, 35c, and 35g1, 35h, ? Each gear table state of 51 is always maintained regardless of the rotating position of the tape running direction switching lever 350. Here, the reel shaft 23 is coaxially provided with a gear 23a. This gear 23m is rotated integrally with the reel shaft 23, and meshes with a gear 23c rotatably supported by a shaft 23b implanted in the main chassis 22.

When the tape running direction switching lever 35 is rotated clockwise in FIG.
It is meshed with 5h.

On the other hand, a gear 24a is also coaxially provided on the reel shaft 24. This gear 24a is rotated integrally with the reel shaft 24, and is meshed with a gear 24c rotatably supported by a shaft 24b implanted in the main chassis 22.

The gear 24c meshes with the gear 351 when the tape running direction switching lever 35 is rotated counterclockwise in FIG.

Therefore, when the forward/reverse switching mechanism is in a state corresponding to the forward running of the tape, that is, in a state where the gears 35h and 23c are meshed, the rotational force of the motor 25 is applied to the pulley 25b and the belt 33°. Flywheel 31. gear 26h
, 35b.

The signal is transmitted to the reel shaft 23 through 35c, 35g, 35h, 23c and 23af, and the reel shaft 23 is rotated counterclockwise in FIG. 3, thereby causing the chive to run in the forward direction. At this time, if the playback operator 15 is operated, the rotary shaft 25th of the motor 25 is rotated at a low speed due to the action of the panna circuit as described above, so the reel shaft 23 is rotated at a low speed, and as described later, the rotation shaft 25th is rotated at a low speed. The roller 29 is brought into pressure contact with the capstan 26 through a chi of 7°, and the tape is brought into a constant speed running state in the forward direction. Further, if the tape high-speed running operator 20 is operated, the governor circuit is disconnected, and the rotating shaft 25a of the motor 25 is rotated at high speed.
The reel shaft 23 is also rotated at high speed, and the tape is running at high speed in the forward direction.Furthermore, the forward/reverse switching mechanism is in a state corresponding to running the tape in the reverse direction, that is, the gears 35i and 24a are in mesh with each other. At some point, the rotational force of the motor 25 is applied to the pulley 2.
5b, belt 33° flywheel 3, gear 26ag
It is transmitted to the reel shaft 24 via 35be35c, 35g, 35b, 35+, 24c and 24&, and the reel shaft 24
is rotated clockwise in FIG. 3, and the tape runs in the reverse direction.

At this time, if the playback operator 15 is operated, the reel shaft 24 is rotated at a low speed, and the pinch roller 30 is brought into full tape contact with the capstan 27, causing the tape to run at a constant speed in the reverse direction. . Further, if the tape high-speed running operation element 20 is operated, the reel shaft 24 is rotated at high speed, and the tape is brought into a high-speed running state in the reverse direction.

Therefore, by switching the forward/reverse switching mechanism using the above-mentioned tape running stop detection mechanism and the manual reverse operation element 17 in the operating state of the tape constant speed running operator for playback, recording, etc., the tape is run at a constant speed in the forward direction. The vehicle can be in the following states: 1) and 2) constant speed travel in the opposite direction, and can realize an auto-reverse function and a manual reverse function. In addition, the tape high-speed running operator 2
By fully switching the forward/reverse switching mechanism using the manual reverse operation element 17 in the 0 operation state, the tape can be made to run at high speed in the forward direction and at high speed in the reverse direction. However, in the case of a high-speed tape running state, when the stop of tape running is detected by the tape running stop detection mechanism, the tape running direction is controlled so as not to be reversed but to be in a stopped state. In addition, even when the tape is running at a constant speed, if the reverse function selection switch used to select whether or not to perform the auto-reverse function described above is set to disable auto-reverse, the tape running stop is detected. When the mechanism detects that the tape has stopped running, it is controlled to automatically come to a stopped state.

FIG. 4 shows a forward/reverse switching mechanism for switching tape running. That is, a small diameter gear 27h is coaxially fitted into the capstan 22. This gear 27h includes a flywheel 32 and a capstan 27.
It is rotated integrally with the And the gear 2
7& is configured to mesh with a large-diameter gear 36 rotatably supported by a shaft 36a implanted in the main chassis 22. Here, the gear 36 has a shaft 36 a
Toothless notches 36b, 3 are provided on the outer periphery facing each other with f.
6c are formed respectively, and these notches 36b, 3
6c is opposed to the gear 27a, the gear 27
A and 36 are no longer meshed.

A circular groove 36d extending around the outer periphery of the gear 36 is formed on one surface side of the gear 36.
A bottle 3 protruding from approximately the center of the switching lever 37 within 6d.
7h is loosely fitted. Here, switch the above-37
is a shaft 3 whose one end is implanted in the main chassis 22.
It is rotatably supported by 7b. Further, a coil spring 37c is engaged between the other end of the switching lever 37 and the main chassis 22, so that the switching lever 37 is arranged in a direction in which the bottle 97a is pressed against the inner peripheral wall of the groove 36d. That is, it is biased counterclockwise in FIG. The switching lever 37 is activated when the manual release operator 17 is operated and the tape running stop is detected by the tape running stop detection mechanism as described later. It is designed to be rotated clockwise in FIG. 4 against the biasing force.

Here, in the inner peripheral side wall of the groove J6d formed in the gear 36, a recess 3 is formed at 1σ at a position opposite to the shaft 36af.
66e and 36f are formed respectively. and,
The bin 37h of the switching lever 37 is placed in this recess 36e*36f.
are inserted into each notch 36 of the gear 36.
b.

36c are respectively opposed to the gears 27h. Further, on the outer circumferential wall of the groove 36d, protrusions 36g, 36 are provided at positions facing the recesses 36e, 361.
):1 are formed respectively. When the switching lever 37 is rotated clockwise in FIG. 4, the pin 37h comes into contact with these protrusions 36g and 36b, causing the gear 36 to rotate slightly counterclockwise in FIG. Obtaining inclined portions 36i and 36j are formed respectively.

Further, a cam portion 36k eccentric to the shaft 36th is formed on one side of the gear 36 and inside the inner wall of the groove 36d.

The main chassis 22 is provided with a pair of bent pressing pieces 38a, 38b which sandwich the cam part 36k of the gear 36 from the lateral direction in FIG. 4 at an interval corresponding to the maximum diameter thereof.
The reverse slider 38 is supported. This reverse slider 38 is constructed by allowing the bins 38e and 38f installed in the main chassis 22 to move into long holes 38c and 38d formed at both ends of the reverse slider 38, so that the arrows E and F in FIG. It is supported so that it can slide freely in the direction. As described above, the bent engagement piece 35d of the tape running direction switching lever 35 is loosely fitted into the elongated hole 3Bg formed approximately at the center of the reverse slider 38.

Now, as shown in FIG.
8 is slid in the direction of arrow F in FIG. 4, in the cassette tape recorder, one end of the elongated hole 3Bg of the reverse slider 38 is aligned with the bent engagement piece 35dk of the tape running direction switching lever 35, as shown by the arrow in FIG. Since it is pressed in the F direction,
The tape running direction switching lever 35 is rotated clockwise in FIG. 4, gears 35h and 23c are meshed, and the tape is running in the forward direction.

In this state, for example, when the manual reverse operator 17 is operated, the switching lever 37 is rotated clockwise in FIG.
iff, the gear 36 is rotated counterclockwise in FIG. 4 and meshed with the gear 27a which is being rotated clockwise in FIG. Therefore, the gear 36 is rotationally driven in the counterclockwise direction in FIG. 4.

Then, as the gear 36 rotates, the cam portion 36k
presses the bent pressing piece 38hf of the reverse slider 38, so that the vertical slider 38 is slid in the direction of arrow E in FIG.

Therefore, the other end of the elongated hole 38g of the reverse slider 38 switches the tape running direction.
ff: Since it is pressed in the direction of arrow E in FIG. 4, the tape running direction switching lever 35 is rotated counterclockwise in FIG.
The gears 35i and 24c are meshed and the tape is switched to a reverse running state. Then, with the gear 36 rotating half a turn and its notch 36c facing the gear 27a, the pin 37& of the switching lever 37 enters the recess 36f of the gear 36, the rotation of the gear 36 is stopped, and the rotation becomes stable. The tape is kept running in the opposite direction.

Further, when the manual reverse operator I7 is operated again in the tape running state in the reverse direction as described above, the switching lever 32 is rotated clockwise in FIG.
a presses the inclined part 36 of the gear 36, so the gear 36
is rotated counterclockwise in FIG. 4 and meshed with the gear 27a, and the gear 36 is rotated counterclockwise in FIG. 4 as described above. Then, this time, the cam portion 36k of the gear 36 engages the bent pressing piece 38 of the reverse slider 38.
Since bf is pressed, the reverse slider 38 is slid in the direction of arrow F in FIG. Therefore, as shown in FIG. 4, the gears 35b and 23a are brought into mesh with each other, and the tape is again switched to the forward running state, at which point the tape is switched between forward and reverse running.

Then, when the gear 36 rotates half a turn and its notch 36b is opposed to the gear 27a as shown in FIG. The rotation is stopped, and the tape continues to run in the forward direction stably.

Thereafter, the switching lever 37 rotates clockwise in FIG. 4 each time the manual reverse operator 12 is operated or each time the tape travel stop detection mechanism detects a stop in tape travel as described later. The tape forward running state and the tape reverse running state described above are alternately repeated. Therefore, by operating the playback and recording keys 17, it is possible to realize a manual reverse function that reverses the tape constant speed running direction at any position while the tape is running at a constant speed, and also has a tape running stop detection mechanism. It is possible to realize an auto-reverse function that automatically reverses the constant speed tape running direction when it is detected that the tape has stopped running, that is, when it is detected that the tape has reached the end.

Further, by operating the manual reverse operator 17 while the tape high-speed running operator 20 is being operated, it is possible to switch between a tape reverse high-speed running state and a tape reverse high-speed running state. be.

Here, as is easily understood from the above explanation, when this cassette Tezo T/Corder is in a stopped state where none of the operators are operated, the reverse slider 3
8 is moved in the direction of arrow E in FIG. 4, and the tape is running in the forward direction, and the reverse slider 38 is moved in the direction of arrow F in FIG. Which state is in is determined by the operating state when the previous tape running was stopped.

FIG. 5 shows a mechanism for selectively bringing the pinch rollers 29, 30f into contact with and separating from the capstans 26, 27 in the tape forward constant speed running state and in the reverse tape running constant speed state. That is, both pinch rollers 29 and 30 are rotatably supported by shafts 29b and 30b provided at one end of pinch levers 29a and 30th, respectively.

These pinch levers 29a and 30a are rotatably supported by being loosely fitted into a substantially cylindrical bearing 29C230cf formed at the other end and a shaft 29dt3θd protruding from the cassette holder 28.

Here, one end of the pinch pin 4-29a is
The L uni tone is locked in a locking part 29e formed on the opening lever 29&, the central part is fully wound around the bearing 29c, and the other end is locked in a locking part 29f formed on the opening lever 29a. This torsion spring 29g is usually only attached to the pinch lever 29&, and the torsion spring 29g is attached to the pinch lever 29
It is impossible to apply the full biasing force to a. And, the above-mentioned Vincille Riichi 29tc has its locking portion 29f.
A coiled spring 29h is engaged between the end of the torsion spring 29g that is engaged with the cassette holder 28, and is biased to rotate counterclockwise in FIG. There is. However, this pinch lever 29
The rotation of g in the counterclockwise direction in FIG.
The end of the torsion spring 29g on the side that is locked comes into contact with a bent engagement piece 39th formed at one end of a switching control lever 39, which will be described later.

Further, the pinch lever 30a has one end that is locked to a locking portion 30e formed on the pinch lever 30h, a central portion that is fully wound around the bearing 3θC, and the other end that is formed on the pinch lever 30m. A torsion spring 30g is mounted so as to be locked to the locking portion 30f. This torsion spring 30g is usually used for pinch lever 3.
Just by being attached to the pinch lever 30a, no biasing force can be applied to the pinch lever 30a. In the bin f-L/par 30a, a coiled tin IJ y-gage 30h is engaged between the end of the torsion spring 30g that is engaged with the engagement portion 30f and the cassette holder 28. As a result of this, it is urged to rotate clockwise in FIG. 5. However, when the pinch lever 30m is rotated clockwise in FIG. bent engagement piece 3
9b.

Here, the switching control lever 39 is installed so as to partially overlap the head chassis 28e, and is installed in the head chassis 28e in a through hole 39c formed approximately in the center thereof. The shaft 39d is loosely fitted so that it is rotatably supported in a substantially 7-no shape relative to the head chassis 22e. This head chassis 2
8e, a shaft 28f formed at a substantially central portion thereof is a substantially cylindrical bearing 28 formed in the cassette holder 28.
It is rotatably supported by the cassette holder 28 by being fitted into the fifth V (shown with hatching in the middle). Then, when the playback operator 15 of No. 111 is operated, the Herad chassis 28e is operated.
The engagement piece 28b protruding from the left end in the figure is indicated by the arrow G in FIG.
By being pressed in the direction, the shaft 28ff is rotated clockwise in FIG.
(not shown in FIG. 5) is adapted to move forward.

The switching control lever 39 also has a through hole 39cf.
On both sides of the sandwich and at the middle lower part of Fig. 5, bend the engaging pieces 39e*3.
9f are formed respectively. Of these, bent engagement piece 3
9e is a state in which the cassette holder 28 is closed,
When the reverse slider 38 is moved in the direction of arrow E in FIG. 5, it is fitted loosely into a recess 38h formed in the lower part of the reverse slider 38 in FIG. The bent engagement piece 391 is formed at the lower part of the reverse slider 38 in FIG. 5 when the reverse slider 38 is moved in the direction of arrow F in FIG. 5 with the cassette holder 28 closed. The engagement protrusion 3B+ is opposed to the engagement protrusion 3B+. Furthermore, the reverse slider 38
In the vicinity of the recess 38b and the engagement protrusion 381, there is a bent engagement piece 39e of the switching control lever 39 when the reverse slider 38 is slid toward the left end E and F in FIG.

391f Inclined portions 38j t sgk are formed to guide the recessed portion 38b and the engagement protrusion 38I so as to face them. When the regeneration operation element 15 is not operated, both pinch rollers 29 and 30 are spaced apart from the cab stuns 25 and 27, as shown in FIG.

Now, as shown in FIG.
It is assumed that the cassette tape recorder is stopped in a state in which the cassette tape recorder 8 is moved in the direction of arrow F in the figure and the cassette tape recorder is running in the forward direction, and it is assumed that the playback operator 15 is operated in this state. Then, the tape drive mechanism described above moves the reel shaft 2.
3 is rotated counterclockwise in FIG. 5, the engaging piece 28b of the head chassis 28e is pressed in the direction of arrow G in FIG. 5, and the head chassis 28e is rotated counterclockwise in FIG. The recording/reproducing head 28c is moved forward and comes into contact with the tape.

At this time, as the head chassis 28e is rotated clockwise in FIG. 6, the switching control lever 39 is also moved upward in FIG. In this case, since the engagement protrusion 381 of the reverse slider 38 is in a position facing the bent engagement piece 391 of the switching control lever 39, the bent engagement piece 39f comes into contact with the engagement protrusion 38i. Therefore, the switching control lever 39 is eventually rotated counterclockwise in FIG. 6 using the point of contact between the bent engagement piece 39f and the engagement protrusion 381 as a fulcrum. Therefore, the bent engagement piece 39a of the switching control lever 39 presses one end of the torsion spring 29g upward in FIG. 6, and the pinch lever 2
9 a is rotated clockwise in FIG.
9 comes into contact with the capstan 26 through the tape. Then, the pinch roller 29 is connected to the capstan 26.
As shown in FIG. 6, when the regeneration operator 15. Each movement stroke of the head chassis 28e, the switching control lever 39, etc. is set. Therefore, the torsion roller 29g generates a full urging force to rotate the pinch lever 29af clockwise in FIG. This is the state in which the tape is played back in the forward direction. At this time, the bending engagement piece 39b of the switching control lever 39 of the other pinch roller 30 moves downward in FIG.
Since it is rotated clockwise in FIG. 6 by the action of FIG. .

It is also assumed that the manual reverse operator 12 is fully operated in an attempt to completely reverse the tape running direction in the above tape square state.

Then, as described above in the description of the forward/reverse switching mechanism, the reverse slider 38 is moved in the direction of arrow E in FIG. At this time, first, the engagement protrusion 381 of the reverse slider 38
and then the inclined portion 38 of the reverse slider 38
j is brought into contact with the bent engagement piece 39e of the switching control lever 39. Since the playback operator 15 remains locked at the operating position, the reverse slider 38 is fixed to the position shown in FIG.
is moved in the direction of arrow E in FIG. 6, the bent engagement piece 39e is moved downward in FIG. 6 along the inclined portion 38jK. Therefore, the switching control lever 39 is sequentially rotated clockwise in FIG. 6 using the contact point between the bent engagement piece 39e and the inclined portion J8j as a fulcrum. When the reverse slider 38 is sufficiently moved in the direction of arrow E in FIG. 6, as shown in FIG.
It is fitted into the four parts 38h of 8 and held stably. At this time, the fulcrum of the switching control lever 39 is the contact point between the bent engagement piece 39e and the recess 38h.

At this time, the bending engagement piece 3 of the switching control lever 39
9b connects one end of the torsion spring sag to the seventh
When pressed upward in the figure, the pinch lever 308 is rotated counterclockwise in FIG. 7, and the pinch roller 30 comes into contact with the capstan 27 via the tee 7' (i7). So, the pinch roller 30 is the capstan 27
When the torsion spring 30g comes in contact with the torsion spring 30g, as shown in FIG. 7, the regeneration operator 15. Each movement stroke of the head chassis 28e, the switching control lever 39, etc. is set. Therefore, the pinch lever 3θai 7th
A biasing force is generated to rotate the pinch roller 30 counterclockwise in the figure, and eventually the pinch roller 30 comes to be pressed against the capstan 27 via the tape by the biasing force of the torsion spring 30g. At this time, the reel shaft 24 is rotated clockwise in FIG. 7 by the tape drive mechanism described above, thereby realizing a tape reverse playback state. At this time, the bending and retaining piece 39a of the switching control lever 39 moves downward in FIG. 7, so the pinch lever 29a moves counterclockwise in FIG. 7 due to the action of the spring 29h. Since the tape is rotated in this direction, it is spaced further away from the capstan 26 than the position shown in FIG. 5, which contributes to stable tape playback in the reverse direction.

Furthermore, if the manual reverse operator 17 is operated again in the tape reverse playback state as described above, the reverse slider 38 will be moved in the direction of arrow F in FIG. Then, the four parts 38h of the reverse slider 38
is released from the bent engagement piece 39e of the switching control lever 39,
Then, the inclined portion 38k of the reverse slider 38 comes into contact with the bent engagement piece 391 of the switching control lever 39. and,
Since the playback operation element 15 remains locked in the operation position, the drive chassis 28e is fixed at the position shown in FIG. As a result, the bent engagement piece 39f is moved downward in FIG. 7 along the inclined portion 38k. Therefore, the switching control lever 39
The contact points between 9f and the inclined portion 38 are all fulcrums and are sequentially rotated in the counterclockwise direction in FIG. When the reverse slider 38 is sufficiently moved in the direction of arrow F in FIG. 7, the switching control lever 39 is moved again as shown in FIG.
The bent engagement piece 391 is engaged with the engagement protrusion 38i of the reverse slider 38 and is stably held.
As described above, the tape square dosho student state is realized.

Now, in the state shown in FIG. 5 again, assume that the reverse slider 38 has been moved in the direction of arrow E in the figure, that is, the cassette chip recorder is stopped in a state in which the chip is running in the reverse direction, and in this state, the above-mentioned playback is performed. Assume that the operator 15 is operated. At this time, the four parts 38h of the reverse slider 38 have already been engaged with the bent engagement piece 3 of the switching control lever 39.
9eK low match, so the head chassis 28e is the fifth
As the switching control lever 39 is rotated clockwise in the drawing, the switching control lever 39 is rotated clockwise in the drawing using the contact point between the bent engagement piece 39e and the recess 38h as a fulcrum. As a result, the tape is played back in the reverse direction as shown in FIG. Thereafter, each time the manual reverse operation element 17 is operated, the states shown in FIGS. 6 and 7 described above are alternately repeated.

Here, the above describes the pinch rollers 29, , ? in the manual reverse function of reversing the tape running direction by operating the manual reverse operator 17. 0 control has been described, but this can be explained in exactly the same way for an auto-reverse function that automatically reverses the tape running direction when the stop of tape running is detected by the tape running stop detection mechanism. Furthermore, the pinch rollers 29 and 30 are controlled also in the recording state when the playback operation element 15 and the recording operation element 16 are operated together.
Of course, it can be explained in the same way as above.

Therefore, according to the mechanism for selectively bringing the pinch roller 29.30f into contact with the capstan 26.27 as explained in FIGS. 5 to 7 above, the capstan 26.27
Since the pinch rollers 29, 30f are moved in the direction of contacting the capstans 26, 27 via the switching control lever 39 on the side where they are brought into contact with the motor 25
It is also possible to reduce the load on.

In other words, in this regard, the conventional pinch roller control means uses a spring to force both pinch rollers in the direction of bringing them into contact with both cazostane, and utilizes the operating force of the playback operator and the moving force of the reverse slider. Then, the entire cab stand collar of one pinch roller is pulled apart against the biasing force of the spring. Therefore, as the pinch roller is pulled away from the cab stun against the biasing force of the spring, the operating force of the regeneration operator and the moving force of the reverse slider, that is, the load applied to the motor, increase. In this case, the above-mentioned spring is brought into pressure contact with all the pinch roller cab stuns, and from the point of view of ensuring stable running of the tape, it is necessary to have a certain biasing force on base running, and this biasing force is required for regeneration. This places a large load on the operator and motor.

However, as mentioned in ``2'', the spring 29h.

30h, the pinch roller 29.30, which is biased in a direction away from the capstan 26.27t, is selectively moved in a direction in which it is brought into pressure contact with the capstan 26.27. Spring 29b
, 30h should have enough biasing force to simply pull them away from the pinch rollers 29, 3Of the diaphragm 26°27.
In fact, this biasing force is sufficient if it is extremely weaker than the biasing force of the conventional spring, so the operating force of the regeneration operator 15 and the moving force of the reverse slider 38, that is, the motor 2
It is possible to reduce the load applied to 5.

Further, the switching control lever 39 is operated as shown in FIGS. 6 and 7 when the vehicle is running at a constant speed in the forward and reverse directions.
Since the contact point between the bending engagement piece 39f and the engagement protrusion 381 and the contact point between the bending engagement piece 39e and the recess 38h are used as fulcrums to rotate, the bending engagement piece can be rotated in a narrow space. Each rotation stroke of the joining pieces 39a and 39b and the movement stroke of the shimbinch rollers 29 and 30 can be made large, which is sufficiently effective in downsizing the cassette tape recorder.

Next, FIG. 8(,) shows the tape high-speed running operator 2.
The reel shaft 2 is operated in the axial direction by the operation of
This shows the details of 3. That is, the main chassis 22 has a portion where the reel shaft 23 is provided.
A through hole 23d is formed. A substantially cylindrical bearing 23e is implanted in the through hole 23d.
A shaft 23f passes through the interior of the shaft 3e. This shaft 23f is located between a four part 23g formed at the upper part of the bearing 23e in FIG. By intervening a coiled spring 231, υ, Fig. 8 (
a) There is one force in the middle upper part. Further, a substantially conical operating portion 23j is formed below the main chassis 22 at the middle lower portion of the shaft 23f in FIG. 8(a). A lock lever 40 and a switch lever 4 are engaged with the inclined portion 23k of the operating portion 23j when the tape high-speed running operator 20 is not operated.

Here, the lock lever 40 is used to lock the shaft 231 in that position when the tape high-speed running operator 20 is operated and the shaft 231 is moved downward in FIG. . Further, the switch lever 4 engages and disengages a leaf switch, which will be described later, for connecting and disconnecting the cabana circuit that controls the rotational speed of the motor 25 from the motor 25. This is to control the on/off state. The lock lever 40 and the switch lever 4 are both biased so as to come into pressure contact with the operating portion 23j.

Further, a substantially N-cylindrical holder 231 is rotatably fitted to the outer peripheral side of the bearing 23e. The middle lower part of this holder 231 in FIG. 8(a) is formed in the shape of a brim,
The gear 23a is used as the gear 23a. Furthermore, the bearing 2
A reel cap 23m, which is fitted with the glue loop of the contact tape cassette 3e, is rotatably fitted on the outer circumferential side of the reel 3e. This reel cag 23m is
A coiled spring 23n is interposed between the lower end in FIG. 8(a) and the gear 23m, so that it is biased towards the upper end in FIG. 8(a). When the reel character 7' 23 m moves upward in FIG. 8, the upper end of the reel character 7' 23 m in FIG. It is made until it comes into contact with the washer 23o attached to the.

Here, as shown in FIG. 8(a), the reel cag 23m and the holder ZSt are fitted in such a way that they are partially interlocked. In this mated state, the reel case, 7'
Although the holder 23m and the holder 231 can slide relative to each other along the axis 23f, they are configured to rotate integrally with respect to rotation.

When the tape high-speed running operator 20 is operated, the upper end of the shaft 23f in FIG. 8(a) is pressed downward in the same figure, and the shaft 231 moves as shown in FIG. 8(b). , is slid downward in the figure against the biasing force of the sedge ring 231. At this time, the lock lever 4o is once moved along the inclined portion 23k of the operating portion 23J in the intermediate pressure direction as shown in FIG. 8(b), and then, as shown in FIG. The shaft 23f is locked at the operating position. Also, at this time, the switch lever 4 is moved to the eighth position along the inclined part 23k of the operating part 23j.
(b) It is moved in the direction of the inner fabric, turns on the leaf switch, and acts to disconnect the governor circuit from the motor 25. In addition, this switch lever 4
As is clear from FIG. 8(b), the operation section 23j
It is made so that it is not locked to the bottom surface part 23p.

Here, FIG. 9 shows the lock lever 40° switch lever 4 and the tape running stop detection mechanism. That is, the lock lever 40 is formed in an abbreviated shape, and one end thereof faces the operating portion 23j of the reel shaft 23. Further, this lock lever 40 is connected to a shaft 4 installed in the main chassis 22.
It is rotatably supported by 0a. The lock lever 40 is urged to rotate counterclockwise in FIG. 9 by a spring (not shown), and one end thereof is pressed against the operating portion 23J.

Further, the switch lever 4 has one end rotatably supported by a shaft 41m implanted in the main chassis 22, and a bent engagement piece 41b formed approximately at the center thereof.
is opposed to the operating section 23j of the reel shaft 23. The switch lever 4 has a hook portion 41c protruding from one end thereof and a main chassis 22.
A coil-shaped spring 41d is engaged between the holder and the holder, so that the bent engagement piece 41b is pressed against the operating portion 23j by being biased to rotate counterclockwise in FIG. Here, an engaging protrusion 41e is formed at the other end of the switch lever 4. This engagement protrusion 4
1e is opposed to one contact piece 42h of the pair of contact pieces 42*r42b of the leaf switch 42 attached to the main chassis 22. The leaf switch 42 is normally in an off state, and when turned on, acts to disconnect the governor circuit from the motor 25.

For this reason, it is now assumed that in the stopped state shown in FIG. 9, the tape high-speed running operator 20 is operated and the reel shaft 23 is suppressed as shown in FIG. 8(b). Then, as shown in FIG. 1O, one end of the lock lever 40 is first engaged with the bottom surface 23p of the operating portion 23 to lock the shaft 23.1 in the operating position. Further, the bending engagement piece 41b of the switch lever 4 is pressed by the operating portion 23j and rotated clockwise in FIG. One contact piece 42af
This suppresses the leaf switch 42 to turn it on. Therefore, the above-mentioned BANA circuit is disconnected from the motor 25, and the motor 25 is rotated at high speed. At this time, if the forward/reverse switching mechanism is in a state that supports forward running of the tape, the tape is run at high speed in the forward direction, and if it is in a state that supports running of the tape in the reverse direction, the tape is moved at high speed in the reverse direction. This is where the tape runs at high speed, even though it is not running. By operating the manual reverse operator 17 while the tape is running at high speed, the high-speed tape running direction can be switched as described above.

Therefore, as described above, the reverse slider 38 of the forward/reverse switching mechanism is connected to the tape running direction switching lever 35 of the tape drive mechanism of the tape drive mechanism, and the manual reverse operation switch is used to switch the tape running direction when the tape is running at high speed. 1
By operating all the valves of the forward/reverse switching mechanism in the operation of step 7, there is no need for independent mechanisms to achieve each high-speed running state of the tape in the forward and reverse directions, and the same switch 7° The drive mechanism can switch the tape running direction between constant-speed tape running and high-speed tape running, which greatly simplifies the configuration and can effectively promote downsizing of cassette tape recorders. be.

Since only one reel shaft 23 is used for high-speed tape running, the other reel shaft 24 is used to lock the lid 7.9 in the closed position, as will be described later. This is especially effective in a small cassette tape recorder of the type shown in FIG. 1, in which the tape cassette 12 is installed protruding from the cabinet 1.

In this regard, a conventional reel shaft operation type cassette tape recorder uses a pair of reel shafts for fast forwarding and rewinding operations, respectively, as shown in Japanese Patent Laid-Open No. 58-80147. . For this reason,
The pair of reel shafts must be configured to be operable and lockable in the operating position, and independent members and gears are provided to move the tape into fast forward and rewind states in response to the operation of each reel shaft. etc., making the configuration complicated and hindering further miniaturization of cassette tape recorders.

However, by making it possible to control each tape running direction in the tape constant-speed running and tape cylinder stray running states through the forward/reverse switching mechanism as described above, all tape running can be performed using the same tape drive mechanism. The present invention can be realized, the configuration can be simplified, and the cassette tape recorder can be made more compact than ever before. In addition, in the conventional cassette tape recorder shown in the above publication number, the cassette is completely stored in the cabinet when the cassette lid is closed, so the locking mechanism of the cassette lid is Although it can be installed in the cabinet, the first
In a cassette tape recorder as shown in the figure, a major problem is the means for reliably locking the cassette 3 in the closed position. Therefore, by using the manual reverse operator 17 to switch the tape running direction during high-speed tape running via the forward/reverse switching mechanism (as described above), the governor can be controlled by operating only one reel shaft 23. Since it is only necessary to disconnect the circuit from the motor 25 and make the motor 25 rotate at high speed, the other reel shaft 24 can be used for locking the cassette lid 130, which also contributes to the miniaturization of the cassette tape recorder. This can be promoted.

In this case, first, the governor [gl
Since the switching operation means for separating the motor 25 from the motor 25 and making the motor 25 rotate at high speed is mounted on the reel shaft 23, there is no need to separately install a new operator on the cabinet IJ, and the configuration is simplified. It's something you get. Also,
When the shaft 23f of the reel shaft 23 is carefully operated, the switch 42 is turned on via the switch lever 4), so that the shaft 23f of the reel shaft 23 is operated in the above-mentioned conventional reel shaft operation type cassette tape recorder. Compared to a system in which each member, gear, etc. of the tape drive mechanism is directly operated by the reel shaft, the structure is much simpler and the operating force can be reduced.

Next, the tape running stop detection mechanism will be explained.

That is, as shown in FIG. 9 again, the surface of the gear 35b meshed with the gear 26a of the cab stan 26, which is opposite to the surface facing the gear 35e, is eccentric with respect to the shaft 35&. The eccentric cam portion 35J and the eccentric cam portion ss
A substantially arc-shaped retaining portion 35 facing the small diameter portion of j is formed with a dot. Furthermore, a friction lever 43 is provided on the surface of the gear 35c that is frictionally engaged with the gear 35) d, which is opposite to the surface facing the gear 35b.

The friction lever 43 has one end rotatably supported by the shaft 35a and is frictionally engaged with the gear 35c, and is biased in the direction of rotation when the gear SSC is rotated. It is.

A long hole 43& is formed at the other end of the friction lever 43, and a pin 44& protruding from one end of the drive lever 44 is loosely fitted into the long hole 43a. Here, the driving lever 44 is rotatably supported at its substantially central portion by a shaft 44b implanted in the main chassis 22, and at the other end thereof, the eccentric cam portion 35j of the gear 35c and a protrusion 44a that can engage with the engagement portion 35;
A protrusion 44d that can be engaged with one side of the cutting lever 37 is formed.

Furthermore, a bin 40 is provided at the other end of the rotter lever 4o.
b is planted, and the bottle 40b is loosely fitted into a four part 45& formed at one end of the regeneration lock lever 45. This regeneration lock lever 45 has a substantially central portion rotatably supported by a shaft 45b implanted in the main shear 722, and the other end thereof is connected to an operating portion 15h provided on the regeneration operator 15. When engaged, the playback operator 5 can be locked in the operating position.

That is, the operating section 15h has the same configuration as the operating section 23j provided on the shaft 23f of the reel shaft 23, and the lock lever 40 is biased counterclockwise in FIG. Since the regeneration lock lever 45 is urged to rotate clockwise in FIG. , the other end of the regeneration lock lever 45 is locked to the bottom surface 5b of the operating section 15a.

Further, a bent engagement piece 41f is formed at the other end of the switch lever 4, and this bent engagement piece 41f is a retaining piece 4 formed at one end of the reverse function selection lever 46.
It is facing 6m. This reverse function selection lever 4
Reference numeral 6 is rotatably supported by a shaft 46b mounted on the main chassis 22 at its substantially central portion, and the other end serves as the aforementioned reverse function selection switch 46c. In addition, the reverse function selection lever 46
A shaft 415d is implanted at the other end, and this shaft 46
A substantially central portion of the automatic stop lever 470 is rotatably supported at one end of the automatic stop lever 47. The automatic stop lever 47 has a bent retaining piece 40c formed on one side of the lock lever 40 at one end thereof. A protruding piece 47m is formed that can be fitted with the holder. Further, the automatic stop lever 47 has a retaining piece 47b that can be engaged with the flange 44c of the drive lever 44 at the other end thereof.

Here, the reverse function selection lever 46 is operated by the user when the reverse function selection switch 46c is pressed by the arrow shown in FIG.
An automatic stop function is required that automatically stops the tape when it reaches the end without disabling the auto-reverse function when the tape is operated in the direction b). Also, upper M
C2') When the user operates the reverse function selection switch 46c in the direction of arrow (I) in FIG. 9, the reverse function selection lever 46 automatically changes the direction of travel when the tape reaches the end. An auto-reverse function will be required to reverse the situation. Furthermore, when the reverse function selection switch 46c is operated in the direction of arrow (6) in FIG.
Automatic stop lever 47 when rotated counterclockwise in the figure
The protruding piece 47m and the retaining piece 47b are the lock lever.
40 bent engagement piece 40c and the protrusion 44 of the drive lever 44
When the reverse function selection switch 46c is operated in the direction of the arrow (I) in FIG. 9, that is, when it is rotated in the direction of the wound in FIG. The protruding piece 47a and the engaging piece 47b are the bent engaging piece 40C of the lock lever 40 and the drive lever 44.
The protrusions 44c are located at positions that do not face each other.

Assume that the cassette tape recorder is now in a stopped state and the tape high-speed running operator 20 is operated. Then, as shown in FIG. 1O, the reel shaft 23
The operation part 23j is locked to the lock lever 40, and the switch lever 4 is moved to the first position by the action of the operation part 23j.
0, the leaf switch 42 is turned on and the motor 25 is rotated at high speed, causing the tape to run at high speed in the forward or reverse direction. Here, when the switch lever 4 is turned clockwise in FIG. 10, its bent engagement piece 411 presses the engagement piece 46h of the reverse function selection lever 46, and eventually
is forcibly rotated counterclockwise in FIG. 10, and the automatic stop function is set to the required state as described above. At this time, as mentioned above, the protruding piece 4 of the automatic stop lever 47
7m and the retaining piece 47b are opposed to the bent engagement piece 40c of the lock lever 40 and the protrusion 44c of the drive lever 44, respectively.

Here, when the tape is running stably at high speed,
Both gears 35b and 35c are rotated clockwise in FIG. Therefore, the friction lever 43 which is frictionally engaged with the gear 35c is urged to rotate in the clockwise direction in FIG. Eccentric cam portion 35 formed on gear 35b
It will be pressed against the circumferential surface of J. At this time, the protrusion 44c of the drive lever 44 is connected to the engagement portion 35k of the gear 35b.
The eccentric cam portion 35j performs a swinging motion in accordance with the rotation of the eccentric cam portion 35j without being engaged with the tape, thereby maintaining a stable high-speed tape running state. - When the tape reaches the end in such a high-speed tape running state and the rotation of the reel shafts 23 and 24 stops, the rotation of the gear 35c is also stopped in conjunction with this. Then, since no rotational bias is applied to the friction lever 43, no biasing force is applied to the drive lever 44 to press its protrusion 44c against the circumferential surface of the eccentric cam portion 35j.

On the other hand, since the gear 35b continues to rotate as the rotational force of the motor 25 is transmitted, the drive lever 44 eventually oscillates at the position where its protrusion 44c is pressed by the maximum part of the eccentric cam portion 35J. dynamic movement is stopped. At this time, when the gear 35b is further rotated, the protrusion 44c of the drive lever 44 rides on the outside of the engagement part 35 of the gear 35b, as shown in FIG. It is rotated significantly counterclockwise.

Then, the protrusion 44c of the drive lever 44 engages with the engagement piece 47a of the automatic stop lever 47, rotating the automatic stop lever 42 clockwise in FIG. 11. Therefore, the protruding piece 47a of the automatic stop lever 2 presses the bent engagement piece 40c of the lock lever 40, and the lock lever (Ok first
Rotate clockwise in Figure 1. As a result, one end of the lock lever 40 is detached from the bottom surface 23p of the operating portion 23j, and is returned to the non-operating position by the biasing force of the shaft 231 of the reel shaft 23 or the sedge ring 23 shown in FIG. At this point, automatic stopping is performed while the tape is running at high speed.

Next, assume that the cassette tape recorder is in a stopped state and the playback operator J5 is operated. Then, the ninth
As shown in the figure, the bottom part J5b of the operation part 15m provided on the playback operator) 5 is engaged with the playback lock lever 45, and the playback operator 5 is locked in the operating position, and as described above, the is driven at a constant speed in the forward or reverse direction. When the tape is running stably at a constant speed, the gears 35b and 35c are both rotated clockwise in FIG. 9, although at a slower speed than when the tape is running at high speed. As described above, the drive lever 44 does not swing in response to the rotation of the eccentric cam portion 35J, so that a stable constant speed tape running state is maintained.

In such a tape running state at a constant speed, in order to automatically stop the tape when it reaches the end, the reverse transmission selection lever 46 is set to the reverse function selection switch 46c.
by moving it in the direction of the arrow in FIG. 9 and rotating it counterclockwise in FIG.
and the protrusion 44c of the drive lever 44, respectively. Then, when the tape reaches the end and the rotation of the gear 35c is stopped, the protrusion 44e of the drive lever 44 switches to the automatic stop lever, as previously explained in FIG.
42 is rotated clockwise in FIG. 11, and the regeneration lock lever 45 is accordingly rotated counterclockwise in FIG. As a result, the other end of the playback lock lever 45 separates from the bottom surface 15b of the operating section 15m provided on the playback operator J5, so that the playback operator J5 is returned to the non-operating position and the tape is being played back. The system automatically stops at .

In addition, in the tape playback state shown in FIG. 9, in order to perform auto-reverse when the tape reaches the end, the reverse function selection lever 46 and the reverse function selection switch 46c are set as indicated by the arrow (1) in FIG. direction and rotate it clockwise in FIG. 9 to release the automatic stop lever 47.
Lock the protruding piece 47th and the engaging piece 47b.
0 bent engagement piece 40c and the protrusion 44c of the drive lever 44
Make sure that they are not facing each other.

Then, the tape reaches the end, the rotation of the gear 35c is stopped, and the protrusion 44 of the driving mark 44 is stopped as described above.
Even if the drive lever 44 is rotated counterclockwise in FIG. 9 by riding on the outside of the engagement portion 3Bk of the gear 35b, the protrusion 44c will not engage with the engagement piece 47b of the automatic stop lever 47. 9, and the automatic stop lever 47 is prevented from rotating clockwise in FIG. For this reason, the regeneration lock lever
45 is not moved at all, lever 45 is not moved at all,
The playback operator 15 remains locked at the operating position.

At this time, as shown in FIG. 11, with the drive lever 44 rotated counterclockwise in the figure, the other protrusion 44
c1 presses one side of the switching lever 37 and rotates the switching lever 37 clockwise in FIG. Therefore, as described above in the description of the forward/reverse switching mechanism, the reverse slider 38 is driven, and the tape running direction is reversed.
Here, an auto-reverse operation is performed in the tape playback state.

Furthermore, it goes without saying that the automatic stop operation and auto-reverse operation described above can be similarly explained not only in the tape playback state but also in the tape recording state. However, in the case of recording, the tape is automatically stopped or switched to the playback state after one round trip by a mechanism not shown.

Next, Fig. 12 shows the front gear, ? 51), 35
c and shows the attached state of the friction lever 43.

That is, the shaft 36 implanted in the main chassis 22
h is composed of a base portion 35t with a large diameter and a tip portion 35m with a small diameter. The tip of this shaft 35a is fitted into a through hole 48& formed in a sub chassis 48 arranged in parallel with the main shear 722.

Here, a substantially cylindrical support member 49 that can support the gears 35b and 35c in frictional engagement with each other is loosely fitted onto the shaft SSa, as will be described in detail later. A substantially cylindrical support portion 35n formed at the center of the gear ssb is fitted on the outside of the support member 49. In this case, the first part of the support part 35n is attached to the flange 49& formed at the upper end of the support member 49 in FIG.
By locking the stepped portion 35° formed at the upper part in FIG. 2, the gear 35b is prevented from coming off the support member 49 upward in FIG. 12.

Further, the support portion 35H of the gear 35b has a through hole 35p formed in the center thereof on the outside thereof.
It is rotatably supported by being loosely fitted. Furthermore, a ring-shaped friction member 50 is interposed between the gears 35b and 35c. Here, a substantially cylindrical support portion 35q is formed on the lower surface of the gear 35c in FIG. 12 so as to surround the through hole 35p. Further, at the lower end of the support member 49 in FIG.
is formed.

A coiled spring 49c is loosely fitted into the support portion 35q of the gear 35c.

This spring 49c is engaged between the bottom surface of the support part 35q and the collar part 49b of the support member 49, so that
This urges the gear 35e upward in FIG. 12. Therefore, the gear 35C is connected to the gear 35b via the friction member 50.
The gears 35b and 35c are frictionally engaged with each other.

Here, in order to assemble the gears 35b and 35c into a state of frictional engagement, the gear 35c is first loosely fitted into the support portion 35n of the gear 36b via the friction member 50. Then, a spring 49e is loosely fitted between the support portion 35n of the gear 35b and the support portion 35g of the gear 35c, and finally the support member 49 is inserted into the support portion 35n of the gear 35b from below in FIG. It is carried out by

Here, at the upper part of the support member 49 in FIG. 12, there is a flange portion 49 as shown in FIGS.
A plurality of (four in the illustrated case) notches 49d are formed in the longitudinal direction including m. Note that FIG. 13(b) shows a cross-section of FIG. 13(,) taken along the arrow x-x'. For this reason, the support member 49 is attached to the support portion 3 of the gear 35b.
5n from below in FIG. 12, and the flange 491L fits into the step 35.5n of the gear 35b. When facing the flange 49. expands to 5 steps 35. The gear 35b should be locked here.

35c can be supported in a frictionally engaged state. That is, gears 35b and 35c.

The friction member 50 and the sliding ring 49c are supported by the support member 49 as one unit.

And, before the sub-chassis 48 is installed,
The support member 49 is loosely fitted onto the shaft 35h from the flange 49m side. This loose fit is such that the step 49e formed inside the support member 49 is locked to the step between the base SSt and the tip ssm of the shaft 35&.

In the above state, the support portion 35q of the gear 35c is
A ring-shaped friction member 5, one end of the friction member 43, a washer 52, and a coil-shaped spring 53 are loosely fitted in this order. Here, the diameter of the spring 53 is formed to be larger than the diameter of the flange 49b of the support member 49. Therefore, when the friction lever 748 is attached, the biasing force of the sliding ring 53 is applied to the friction lever 43.
is pressed against the gear 36a via the friction member 5, and the gear 35c and the friction lever 43 are frictionally engaged therewith.

Therefore, according to the above-described attachment means for the gears 35b and 35c, the support member 49 is attached to the support portion 35n of the gear 35b.
Just insert it into both gears 35b.

35c can be supported in a state of frictional engagement, the assembly work is extremely easy, and the support can be carried out reliably. Further, the support member 4g can be easily manufactured by molding a synthetic resin material, and the structure can be simplified.

As described above, a feature of the present invention is that the gears 35b and 35c are supported by frictional engagement with each other by inserting the support member 49.

Here, in the above-described attachment means for the gears 35b and 35c, the flange 49& of the support member 49 is attached to the crotch 35o of the gear 35b.
Since the support member 49 is locked with the gear J5b, the support member 49 is rotated together with the gear J5b. There would be no problem if the supporting member 49 was completely rotated integrally with the gear 35b, but since the gear 35b is used for both constant-speed tape running and high-speed tape running, Speed, torque, etc. are changed. For this reason,
If a space is created between the support member 49 and the gear 35b, and the support member 49 rotates and then stops even when the gear 35b is rotated, the rotation speed of the gear 35b becomes uneven, and as a result, the tape A problem arises in that it has a negative impact on driving.

Therefore, as shown in FIG. 14, the stepped portion 35 of the gear 35b
A protrusion 49f is formed in the inside of the support member 49 to correspond to the notch 49d, and the flange 49a of the support member 49 is connected to the gear 35.
The notch 49d is locked in the stepped portion 35'o of b.
The protrusion 49f is fitted inside. Then, the support member 49 can be rotated completely integrally with the gear 35b without slipping.

Further, the other flange 49b of the support part 49 has a first
A protrusion 49g as shown in FIG. 5 is formed. This protruding portion 49g has a portion 49b that is flush with the circumferential side of the flange portion 49b. In this case, gear 3
As the support member 49 rotates, the support member 49 moves as indicated by the arrow (
When rotated in the J) direction, the winding direction of the coiled sedge ring 53 is such that the end facing the protruding part 49g has an escape from the protruding part 49g, that is, the supporting member 49 The tip of the spring 53 is oriented so that it does not come into contact with the protrusion 49g when the spring 53 is rotated.

For this reason, when the support member 49 is rotated in the direction of arrow (J) in FIG. It is pressed and pushed out so as to spread outward beyond the flange portion 49b. Therefore, by inserting the end of the spring 53 between the flange 49b and the sub-chassis 48, it is possible to prevent the rotation of the support member 49 and, by extension, the rotation of the gear 35b from being adversely affected, thereby making it possible to stabilize the rotation of the gear 35b. This allows for smooth tape running.

Next, with the cassette lid J3 in the closed position, the other reel shaft 2
4 will be explained. That is, in FIG. 16, on the flat surface of the cassette lid 3, there are the stop operator 14, the playback operator J5, and the manual reverse m.
A through hole 13b for attaching the cover 1y and the display section 18, etc.
13e to 13e are formed, respectively. Further, a through hole 13f is formed in the side of one end 13h of the cassette cover 13 for rotatably attaching the cassette lid 13 to the cabinet 1.

The cassette lid 3 has the ejector 2 and the lock slider 5 on the bottom side in FIG.
A support body 65 supporting 4 etc. is attached. That is, the support body 55 includes a main body portion 56c that is substantially plate-shaped and has a through hole 551L and a cutout portion 55b formed in a portion facing the window J9 of the cassette lid 3 and the tape high-speed running operator 20; These are arm portions 55d and 55e in an abbreviated form that protrude from both ends of the main body portion 55c so as to follow the shape of the cassette lid 3.

Further, the main body portion 55c of the support body 550 has a through hole 5 therein.
A long hole 551.55g is formed on the opposite side of the notch 55b of 5a. Of these, the top of the reel shaft 24 is loosely inserted into the elongated hole 55f when the cassette lid 3 is closed. Further, a step portion 55h having a substantially U-shape in plan is formed at the end portion of the main body portion 55c on the side where the arm portion 55e is formed, and an eave-like portion 551 of the step portion 55h is formed with a step portion 55h. A long hole 55j is also formed.

Here, the lock slider 54 is formed by bending a metal plate into a substantially crank shape, and the blade portion 54 has a substantially rectangular shape at a position facing the elongated hole 55f of the support body 55. A through hole 54b is formed. The lock slider 54 also has a long hole 55f t in the support body 55.
Screw holes 54 cr 54 d r 54 are provided at positions facing the eaves-like portion 551 of the stepped portion 55 g and the stepped portion 55 h, respectively.
e is formed.

The lock slider 54 has the other portion 54f.
from the lower surface side of the support body 55 in FIG.
16, and the one blade portion 54h and the other portion 54f of the lock slider 54 are brought into contact with the lower surface of the support body 55 in FIG. 16 and the upper surface of the eave-shaped portion 5151, respectively.

On the other hand, the ejector 2 is formed into a T-shape with a thousand sides, and has a screw hole 54c of the lock slider 54.
Through holes 21a, 21b, 21 are provided at positions facing 54e to 54e.
c are formed respectively. This eject operator 2
On the lower surface side in FIG. 16, a substantially cylindrical spacer portion 2d is formed to surround the through hole 21m and to be loosely inserted into the through hole 55f of the support body 55. Further, on the lower surface side of the ejector operator 2 in FIG. 16, a protrusion 21e is formed in the vicinity of the through hole 27b to be loosely inserted into the elongated hole 55g of the support body 55.

Then, as described above, after installing the lock slider 54 on the lower surface side of the support body 55 in FIG.
The ejector 2 is mounted on the upper side of the support 55 in FIG. 16 and is fastened with a screw 57. Then,
As shown in FIG.
The spacer portion 21d is loosely fitted into the elongated hole 55 of the support body 55, and the through hole 2Ja of the eject operator 2 and the spacer portion 21
The screw 57 inserted through the hole d is screwed into the screw hole 54c of the lock slider 54. Further, the protrusion 21e of the ejector 2 is loosely fitted into the elongated hole 55g of the support 55,
The screw 5 is inserted through the through hole 21b of the ejector operator 2.
7 is screwed into the screw hole 64d of the lock slider 54. Furthermore, the screw 57 inserted through the through hole 21a of the ejector 2 is screwed into the screw hole 54e of the lock slider 54, and the ejector 2 is connected thereto.

The slider 54 is slidably supported by the support 55 in the direction indicated by the arrow (1, (1, 1) in FIG. 17) with the support 55 sandwiched therebetween.

In this case, the spring 56 is connected to the elongated hole 5 of the support body 55.
5g and the protrusion 21e of the ejector 27).
(including the lock slider 54) is indicated by the arrow (6) in Fig. 17.
It becomes biased in the direction. At this time, one end of the eject operator 2 is projected outward from the end of the cassette lid 13. The ejector 2 can be suppressed by the user in the direction of the arrow (L) in FIG. 17 against the +J force of the sliding ring 56.

As described above, the support body 55 on which the ejector operator 2 and the lock slider 54 are supported is attached to the cassette lid J3.
It is attached to the lower surface side in FIG. 16. In this case, the portion of the lower surface of the cassette lid J3 in FIG. 16 that faces the ejector 2 is formed into a thin wall portion 13g, as shown in FIG. 17, except for the thin wall portion isg. This portion is brought into close contact with the support body 55 and fixed, for example, with an adhesive or the like.

Here, as shown in FIG. 17, a substantially conical lock portion 24d is formed at the top of the reel shaft 24. As shown in FIG. The lock portion 24d is implanted in the main chassis 22 and is formed in a substantially umbrella shape at the tip of a shaft 24e that is the center of the reel shaft 24. The shaft 24e does not rotate, and the lever cap 241 is rotatably supported on the shaft 24e.

Here, suppose that the cassette cover 13 is now in the open state and the cassette lid 13 is in the closed state. Then, one end of the through hole 54b of the lock slider 54 is pressed by the inclined portion 24g of the lock portion 2nd, and the lock slider 54 moves in the direction of arrow (L) in FIG. 17 against the biasing force of the spring 56. be done. And cassette lid no. 3
When the through hole 54b of the lock slider 54 is completely closed, as shown in FIG.
Since the lock slider 54 is opposed to the bottom part 2dh of
is returned to its original position by the force of the spring 56, and one end of the through hole 54b is engaged with the bottom surface 24b of the locking portion 24d, thereby locking the cassette lid 3 in the closed position. .

In addition, when the ejector 2 is operated in the direction of the arrow (with) in FIG. 17 with the cassette lid 13 in the locked state as described above, one end of the through hole 54b of the lock slider 54- will be inserted into the lock portion 21d. It is detached from the bottom surface portion 24h, and here the lock of the cassette lid J3 in the closed position is released, and the cassette lid J3 can be brought into the open state.

Therefore, as described above, by supporting the eject operator 2 and the lock slider 54 on the support 55 and attaching the support 55 to the cassette lid 13, the cassette lid 13 is closed. In this state, only the part of the ejector 2 that is pressed by the user is exposed to the outside, and the lock slider 54 is not visible from the outside at all.
The ejector 2 and the lock slider 54 can be reliably attached with a simple structure without spoiling the appearance of the cassette tape recorder.

In addition, the head of the screw 57 in particular cannot be touched from the outside either when the cassette lid 3 is in the open state or in the closed state, which is structurally effective. It is.

Next, as shown in FIG. 18, the main chassis 22
Of these, a connection terminal portion 58 is provided near the reel shaft 24 that locks the cassette lid 13 in the closed position, with which a connection terminal provided on the tuner pack mentioned above comes into contact when the tuner pack is attached. ing. That is, when the tuner is installed in the cassette tape recorder, the flat part facing the main chassis 22 is
Connection terminals that come into contact with the connection terminals 58a of the connection terminal section 58 are provided in a protruding manner so that signals can be transmitted between the tuner pack and the cassette tape recorder.

As mentioned above, by wiring the connecting terminal portion 58 for connecting to the tuner pack near the reel shaft 24, electrical connection with the cheese 9 is ensured. It is something that can be done. That is, when the cassette lid 3 is closed, the part locked to the reel shaft 24 is supported most reliably, so the connection terminal part 58 connected to the tuner pack is placed near the reel shaft 24 By arranging the tuner pack, it is possible to ensure contact between the connection terminal of the tuner pack and the connection terminal 581L of the cassette tape recorder, and good radio reception can be achieved.

Here, the connection terminal 58a is shown in FIG. 19(a).
, (b), (c), the reel shaft 24
The reel shaft 240 is arranged in a circular manner to surround the periphery of the reel shaft 240.
Of course, it is also possible to arrange the reel in two parts on both sides or in an arc shape along the circumference of the reel shaft 24.

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 described in detail above, according to the present invention, it is possible to provide an extremely good tape recorder device that simplifies the installation of the rotating body constituting the rotational force transmission system of the tape running stop and facilitates the assembly work. can.

[Brief explanation of the drawing]

Fig. 1 is an external view showing a cassette tape recorder to which the present invention is applied, Fig. 2 is an external view showing the tape recorder mechanism of the cassette Teso recorder, and Fig. 3 is a tape drive of the tape recorder mechanism. FIG. 4 is a configuration diagram showing the forward/reverse switching mechanism of the tape recorder mechanism,
Figure 5 is a configuration diagram showing the pinch roller control mechanism of the tape recorder mechanism, Figures 6 and 7 are explanatory diagrams of the operation of the pinch roller control mechanism, respectively, and Figure 8 is the reel shaft of the tape recorder mechanism. Fig. 9 is a configuration diagram showing the tape running stop detection mechanism of the tape recorder mechanism section, and Figs. 1O and 11 respectively show the operation of the tape running stop detection mechanism. Explanatory diagram, 12th
The figure shows an embodiment of the tape recorder device according to the present invention, and is a side sectional view showing the gear attachment mechanism of the tape recorder mechanism section, and FIGS. 13 and 14 show details of the gear attachment mechanism, respectively. An explanatory diagram, FIG. 15 is a perspective view showing the spring release mechanism of the gear attachment mechanism, FIG. 16, and FIG.
7 is an exploded perspective view and a side sectional view showing the locking mechanism of the cassette lid, respectively, and FIGS. 18 and 19 are a plan view showing the connecting mechanism of the Qina pack and a plan view showing a modification thereof, respectively. 1. Cabinet, 2. Conn. 7 and tape cassette, G. 13. Cassette lid, No. 4. Stop control, 15. Playback control, No. 7. Recording control. ,
DESCRIPTION OF SYMBOLS 17...Manual reverse operator, 18...Display part, 9...Controller, 20...Operator for tape high-speed running, 2...Eject operator, 22...Main chassis , 23.24... Reel shaft, 25... Motor, 26.27... Capstan, 28... Cassette holder, 29.30... Pinch roller, 3 no., 32.
...Flywheel, 33...Belt, 34...Pulley, 35...Tape running direction switching lever, 36...
- Gear, 37... Switching lever, 38... Reverse slider, 39... Switching control lever, 40... Lock lever -14... Switch lever, 42... Leaf switch, 43... Friction lever, 44... Drive lever, 45... Regeneration lock lever 246... Reverse function selection lever, 47... Automatic stop lever, 48...
・Sub-chassis, 49...Support paulownia, 50.51...
- Friction member, 52... washer, 53... spring, 54... lock slider, 55... support body, 5
6... Spring, 57... Screw, 58... Connection terminal portion. Figure 1 Figure 2 Figure 7 Figure 8 (a) (b) Figure 12 (a) (b) 4SOOX' Figure 14 Figure 15 Figure 16 Figure 17 Figure 18"') (b) (C) 8a

Claims (1)

[Claims] a first rotary body to which the rotational force of the motor for driving the vehicle is transmitted; and a reel that is coaxially frictionally engaged with the first rotary body using a friction member and a spring and transmits the rotational force of the motor to the reel. A tape recorder device having a second rotary body that penetrates the center portions of the first and second rotary bodies, has a generally cylindrical shape, and has flanges at both ends;
A support member whose one end is elastically narrowed, and both flanges formed at both ends of the support member, the first rotating body, the friction member, the second rotating body, and the spring. A tape recorder device, characterized in that it is held in between.