JPS60163254A - Tape recorder device - Google Patents

Abstract

PURPOSE:To attain stable and sure tape travelling by controlling also the high speed travelling direction of a tape by using a normal/reverse switching means for switching the constant speed travelling direction of the tape. CONSTITUTION:A manual reverse function for reversing a tape constant speed travelling direction at an optional position during the tape constant speed travelling can be attained by operating a manual reverse operator 17 under a tape constant speed travelling stage in reproducing and recording, and an auto- reverse function for reversing the tape constant speed travelling direction automatically when a tape travelling stop detecting means detects that a normal tape has reached the terminal end can be attained. When the manual reverse operator 17 is operated under the state that a tape high speed travelling operator 20 is operated, the tape forward direction high speed travelling state and the tape backward direction high speed travelling state can be switched.

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 tape drive systems that are equipped with a mechanism for switching between forward and reverse tape running directions.

[Technical background of the invention and its problems]

In recent years, cassette tape recorders have become small and lightweight, making them suitable for portability, and two-way stereo recordings using headphones have become popular, making it easy to play back tapes while walking, for example. It is made so that you can enjoy it. Currently, cassette tape recorders of this type that are much smaller than compact tape cassettes have already been developed. In other words, the tape cassette is supported and mounted from the part where the head insertion hole and the pinch roller insertion hole are formed to the part where the reel nop is provided, and the peripheral side of the tape cassette is supported. It is designed to be left exposed, and when no tape cassette is attached, it is extremely small and easy to handle.

By the way, if the cassette recorder is made smaller than the conventional cassette as mentioned above, the next thing that is required is a conventional large cassette with auto reverse function, manual reverse function, automatic stop function, etc. The purpose of the present invention is to make it possible to realize various functions provided in a tape recorder. However, it is obviously impossible to apply the various mechanisms used in conventional large-sized cassette tape recorders to compact tape cassettes and small-sized cassette tape recorders. There is a need for the development of a new mechanism suitable for cassette tape recorders, that is, a new mechanism capable of realizing the various functions described above without hindering the miniaturization of cassette tape recorders.

On the other hand, simply downsizing the various parts that make up the mechanism in order to achieve the above requirements would not only make the assembly work difficult, but also make the operation difficult. There is a strong demand for the development of a mechanism that can realize various functions, is easy to assemble, and is less likely to malfunction.

[Purpose of the invention]

This invention was made based on the above circumstances, and by using a forward/reverse switching mechanism that switches the tape constant speed running direction to also control the high speed running direction of the tape, it is possible to achieve a stable and reliable tape with a simple configuration. It is an object of the present invention to provide an extremely good tape recorder device that can realize tape running and is suitable for downsizing.

[Summary of the invention]

That is, the tape recorder device according to the present invention includes a tape drive mechanism that makes the tape run at constant speed and high speed by switching the tape running motor between constant speed and high speed rotation states, and a tape drive mechanism that causes the tape running motor to rotate at constant speed and high speed. a tape constant-speed running operating means, and reversing the tape constant-speed running direction in conjunction with a tape end detection operation or an operation of a manual reverse operation member in a tape constant-speed running state by the tape constant-speed running operating means; a forward/reverse switching mechanism; and a high-speed tape running operating means for setting the tape running motor in a high-speed rotating state; The present invention is characterized in that switching is performed using the forward/reverse switching mechanism by operating a reverse operating 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 a compact tape cassette (indicated by a two-dot chain line in the figure) 12 is also formed in a smaller size. A cassette lid 13 is supported on the upper surface of the cabinet 11 in the figure. The cassette lid 13 has a side profile with a curved shape, and one end 13m of the cassette lid 13 is attached to the cabinet 11 as shown by the arrow (
4), is 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 rotated in the direction of the arrow (G) in the figure, and also in the direction of the arrow (B) in the figure.
In the closed position rotated in the direction, it is securely locked by a locking mechanism which will be described later.

Here, the compact tape cassette 12 is inserted between the cabinet 1 and the cassette lid 13, as shown in FIG. 1, with the cassette lid 13 closed.

In this case, the compact tape cassette 12 has the portion where the well-known head insertion hole and pinch roller insertion hole, which cannot be seen in the figure, directed toward the pivot point of the cassette lid 13, and is provided with a pair of reel hubs. The cassette cover 12 is sandwiched between the cabinet 11 and the cassette lid 13, and the other parts, such as the rear surface 12a and both side surfaces 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. Furthermore, a window portion 19 made of, for example, a transparent acrylic plate is provided at a substantially central portion of the cassette lid 13, corresponding to the tape see-through window formed on the mounted compact 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 I9. Although the details will be described later, this tape high-speed running operator is arranged to face the tip of one of a pair of reel shafts (not shown) that protrude from the approximate center of the cabinet 11 in the direction of the cassette lid 13. ing. By suppressing this tape high-speed running operator 20,
One of the reel shafts is pressed in its axial direction, and a tape recorder mechanism provided in the cabinet 1, which will be described later, is brought into a high-speed running state. however,
In this case, run the tape in the forward direction at high speed (fast forward).
The manual reverse operation button 17 is used to select whether to run at high speed or in the opposite direction (rewind).

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, the cassette tape recorder is not only capable of recording and reproducing tape, but also can receive radio broadcasts by using a tuner. That is, this tuner arm connects the tuner circuit section that performs tuning, detection, amplification, etc. of reception of radio waves to the cabinet 11.
and the cassette lid 13, and is installed between the cabinet 11 and the cassette lid 13 instead of the compact tape cassette 127/C described above. It is.

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 sent to the connection terminal provided on the tuner back and the cabinet 11. The signal is introduced into the main amplifier circuit in the cabinet 1 through a connecting terminal, and is reproduced through headphones, where the radio broadcast is received.

By the way, on the back and sides of the cabinet 11 that cannot be seen in Figure 1, there are a headphone jack into which a headphone plug is inserted, a Qi-Goo radio selector switch, a volume adjustment dial, a stereo balance adjustment dial,
A selector switch for tape type (for example, normal tape, chrome tape, etc.) and a reverse function selection switch for selecting whether or not to perform the auto-reverse function are provided, respectively.

FIG. 2 is an exploded view of the tape recorder mechanism of the cassette tape recorder shown in FIG. That is, 22 in FIG. 2 is a main chassis of the tape recorder mechanism section, which is housed in the cabinet 11. The pair of reel shafts 23 and 24 are rotatably supported at approximately the center of the main chassis 22, respectively. Of these, the reel shaft 23 is supported so as to be able to slide freely in its axial direction, and is adapted to run the tape at high speed as described above.The other reel shaft 24 is This is used to lock the cassette lid 13 that has been opened.

Here, on the lower surface side of the main shear 722 that cannot be seen in FIG. 2, the reel shaft 23.
4 as the playback, recording, and tape high-speed running controls 15.
16. A tape drive mechanism for rotating the tape at a predetermined rotational speed and rotational direction in response to the operation in 20, a tape running stop detection mechanism that detects when the tape has reached the end by detecting the stop of tape running; A tape running stop detection mechanism, a forward/reverse switching mechanism for switching the running direction of the tape in conjunction with the manual path operator 17, and a motor 25 serving as a power source for each of these mechanisms are installed, respectively. Further, on the upper surface side of the main chassis 22 in FIG. 2, a pair of capstans 26 and 27, which are part of the tape drive mechanism, are rotatably supported. These pair of capstans 26 and 27 serve as rotating shafts of a pair of flywheels, which will be described later, provided on the lower surface side of the main shear 722 in FIG. 2, respectively.

A cassette holder 28 is rotatably supported at one end of the main shear 722 in the direction of arrow (4)-1(B) in FIG. is to be installed. Hold parts 28h and 28b are formed at both ends of the cassette holder 28 so as to sandwich both ends of the compact 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 recording/reproducing head) 28C and an erasing head 28d are supported. Of these, the recording/reproducing head 21
Jc is attached to the cassette holder 28 by arrow (C) in FIG.
) head chassis 28 supported so as to be slidable in the direction
It is attached to e. This head shear 728e is connected to the playback operator 1 when the cassette holder 28 is in the closed position.
5, the recording/reproducing spatula V28c is moved forward in the direction of arrow (C) in FIG. Further, the erasing head 28d is operated in conjunction with the operation of the recording operator 16 (arrow Q in FIG.
It is moved forward in the direction and comes into contact with the tape.

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 touch the tape.

The cassette holder 28 also has a pin opening 29.30 at a position corresponding to the Yapstan 26.27.
are rotatably supported at an angle of 1°. The details of these pinch rollers 29 and 3θ will be described later, but in conjunction with the switching movement of the forward/reverse switching mechanism, the pinch rollers 29, 3θ selectively move the capstan 26.
．． ;! 5. moreover,"
The cassette holder 28 has the stop and play functions.

Each of the recording and manual reverse operators 141 to 17 is supported so as to be freely suppressable. When the cassette 113 is attached to the cassette holder 28, each of the operators 14 to 17 is projected to the outside and becomes operable. Further, the playback and recording controls 15 and 16 are both locked at their operating positions, and are unlocked by operating the stop control 14. Furthermore, the stop operation element 14 and the manual reverse operation element 17 are designed to always return to their original positions without being removed from the operation position. Further, the tape high speed running operator 20 and the tab υ reel shaft 23 are also locked at the operating position, and the stop operator 1
It is a trap so that the locked state will be released by operation 4.

Here, the cassette holder 28 is shown by the arrow (A) in FIG.
When the stop, play, record, and manual reverse controls 14 to 17 are rotated in the direction of
．． The recording/reproducing head 28C1 the erasing head 28d*The head chassis 28e and the pinch rollers 29 and 30 are moved together with the cassette holder 28.

FIG. 3 shows a tape drive mechanism for rotating the pair of reel shafts 23, 24, respectively. That is, as described above, the capstans 26 and 27 serve as rotational axes of the flyholes 31 and 32, respectively.

A belt 33 is connected to a small diameter pulley 25b fitted to the rotating shaft 25mK of the motor 25, a shaft 34m implanted in the flywheel 31.32 and the main 7 beam 22. The rotational force of the motor 25 is transmitted by attaching a rotatably supported small-diameter pulley 34 as shown in the figure. Here, the motor 25 is driven to rotate its rotating shaft 25a clockwise in FIG. 3 in conjunction with the operations of the playback operator 15 and the tape high-speed running operator 20. . For this purpose, the flywheels 31 and 32 are rotated counterclockwise and clockwise in FIG. 3, respectively. Note that during recording, since both the playback operator 15 and the recording operator 16 are operated, the burner motor 25 rotates and the flywheels 31, 32
It is also rotationally driven.

Further, when the regeneration operation element 15 is operated, the motor 25 is operated by a banner circuit (not shown), and the rotation shaft 25 is
When the tape m is controlled to be rotated at a low speed and the tape high speed running operator 20 is operated, the banner circuit is disconnected and the rotating shaft 25h is controlled to be rotated at a high speed, as will be described later. There is.

Here, a small diameter gear 26a is coaxially fitted into the capstan 26. This gear 26& is rotated integrally with the flywheel 31 and capstan 26. A large-diameter gear 35b rotatably supported by a shaft 35& implanted in the main shear 722 is meshed with the gear 26g. In addition, the above shaft 3
5th, a gear 35c having a smaller diameter than the gear 35b is rotatably supported. And these two gears 35
b and 35c are frictionally engaged with each other and rotate integrally until a predetermined load or more is applied.

The tape running direction switching lever 3 is still attached to the shaft 35h.
5 is rotatably supported at approximately the center thereof. However, the rotation of the tape running direction switching lever 35 and the rotation of the gears 35b and 35c are completely independent. Furthermore, a bent engagement piece 35ti is formed at one end of the tape running direction switching lever 35. When this bent engagement piece 95d is engaged with a reverse slider of a forward/reverse switching mechanism to be described later, the tape running direction switching lever 35 is rotated clockwise and counterclockwise in FIG. It is K so that it is done. That is, although the details will be described later, the tape running direction switching lever 35 is rotated clockwise in FIG. When the tape is in a state corresponding to running in the reverse direction, it is rotated counterclockwise in FIG.

Two shafts 35e and 35f are implanted at the other end of the tape running direction switching lever 35, respectively. Of these, the shaft 35e has two gears 35g, 35
b is rotatably supported. These two gears 35
g and 35h are rotated integrally, and one gear -35g is meshed with the gear 35a. Further, a gear 35i is rotatably supported on the shaft 35f. This gear 351 is meshed with the gear J5h. Therefore, the meshing states of the gears 26g, 35b1, 35c, 35g1, 35b, and 35i are always maintained regardless of the rotational position of the tape running direction switching lever 35.

Here, a gear 28th is coaxially attached to the reel shaft 23.
is provided. This gear 23e is rotated integrally with the reel shaft 23, and meshes with a gear 23c which is implanted in the main chassis 22 and rotatably supported by the outer shaft 23b.

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 24m is rotated integrally with the reel shaft 24, and meshes 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, and the pawl gears 35h and 23c are in mesh, the rotational force of the motor 25 is applied to the pulley 25b and belt 33°. Wheel 311 Gear 26a
, 35b, 35c.

Reel shaft 2 via 35g, 35h, 23e and 23a
3, the reel shaft 23 is rotated counterclockwise in FIG. 3, causing the tape to run in the forward direction. At this time, if the playback operator 15 is operated,
As mentioned above, the rotating shaft 25a of the motor 25 is
is rotated at a low speed, the reel shaft 23 is rotated at a low speed, and as will be described later, the pinch roller 29 is pressed against the capstan 26 (C) via the tape, and the tape is running at a constant speed in the forward direction. Furthermore, if the tape high-speed running operator 2o is operated and turned off, the governor circuit is disconnected, so the rotating shaft 25m of the motor 25 is rotated at high speed, and the reel shaft 23 is also rotated at high speed, so that the tape is running at high speed in the forward direction. It is done.

Further, when the forward/reverse switching mechanism is in a state corresponding to running the tape in the reverse direction, and in a state in which the pawl gear 35 and 24a are meshed, the rotational force of the motor 25 is applied to the pulley 2.
5b, belt 33° flywheel 31. Gear 26h,
35b, 35c.

35g, 35h1351.240 and 24&, the reel shaft 24 is rotated clockwise in FIG. 3, causing the tape to run 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 3 is rotated at a low speed.
0 is brought into pressure contact with the capstan 27 via the tape, and the tape runs at a constant speed in the reverse direction. Further, if the tape high-speed running operator 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, in the operating state of the constant speed tape running operation for playback, recording, etc., by switching the forward/reverse switching mechanism using the above-mentioned tape running stop detection mechanism and manual reverse operator 17, the tape is fixed in the forward direction. It is capable of running at high speed and traveling at a constant speed in the opposite direction, and is capable of realizing an auto-reverse function and a manual reverse function. In addition, in the operation state of the above-mentioned high-speed running operation element 20, the above-mentioned manual reverse operation element 17 is
By switching the forward/reverse switching mechanism, the tape can be 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 if the tape is running at a constant speed, if the reverse function selection switch, which is used to select whether or not to perform the auto-reverse function described above, is set to disable auto-reverse, the tape will stop running. When the detection 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 27m is coaxially fitted into the capstan 27. This gear 271L includes the flywheel 32 and the capstan 2.
7 and is rotated integrally with it. The gear 27& is connected to a shaft 36aK installed in the main chassis 22.
It is designed to mesh with a large diameter gear 36 that is rotatably supported. Here, the gear 36 has a shaft 36a.
A toothless notch 36b is provided on the outer periphery facing each other across the
r 36 c are formed respectively, and this notch 3
When 6b and 36c are opposed to the gear 27m,
The gears 27m and 36 are no longer geared.

A circular groove 36d along the outer periphery of the gear 36 is formed on one 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, the switching lever 37 is connected to a shaft 37 whose negative end is implanted in the main chassis 22.
b is rotatably supported. In addition, the above switching 1/
A coiled spring 37c is engaged between the other end of the bar 37 and the main chassis 22, so that the bin 37a is pressed against the inner wall of the groove 36d, that is, as shown in FIG. The center is biased counterclockwise. The switching lever 37 resists the biasing force of the spring 37c when the manual reverse operator 17 is operated and when the tape running stop detection mechanism detects that the tape running has stopped, as will be described later. It is designed to be rotated clockwise in FIG.

Here, on the inner peripheral side wall of the groove 36d formed in the gear 36, a recess 36 is provided at a position facing the shaft 36h.
e and 36f are formed, respectively. Then, with the pins 37h of the switching lever 37 inserted into the recesses 36e and 36f, the notch J6b of the gear 36 is inserted.
* J 6c is arranged to be opposed to gear 27m, respectively. Furthermore, protrusions 36g and 36h are formed on the outer peripheral wall of the groove 36d at positions facing the recesses 36e*J6f, respectively.

When the switching lever 37 is rotated clockwise in FIG. 4, the pin 37h comes into contact with these protrusions 36 g e 36 h, causing the gear 36 to move slightly counterclockwise in FIG. 4. Inclined portions 361, 36j that can be rotated are formed respectively.

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

The main gear 722 is provided with a pair of bent pressing pieces 38g, 38 which sandwich the cam part 36k of the gear 36 from the lateral direction in FIG. 4 at an interval corresponding to its maximum diameter.
The reverse slider 38 having a shape b is supported. This reverse slider 38 is constructed by loosely fitting the bins 38 a j j 8 f installed in the main chassis 22 into elongated holes 38 c and 38 d formed at both ends of the reverse slider 38 as shown by the arrows in FIG. The slide P is freely supported in the (g)) and (3) directions. As described above, the bent engagement piece 35d of the tape running direction switching lever 35 is loosely fitted into the elongated hole 38g formed approximately in the center of the reverse slider 38.

Now, as shown in FIG.
8 is slid in the direction of the arrow in FIG.
One end of the elongated hole 3gg presses the bent engagement piece 35d of the tape running direction switching lever 35 in the direction of arrow (F') in FIG. 4, so that the tape running direction switching lever 35 moves clockwise in FIG. The gears 35h and 23c are rotated, and the gears 35h and 23c are meshed.
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.
1, the gear 36 is rotated counterclockwise in FIG. 4, and the gear 27m is rotated clockwise in FIG.
It is aligned with the Therefore, the gear 36 is rotated counterclockwise in FIG. 4.

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

For this reason, the elongated hole of the reverse slider 38, ? /? g
The other end is the bent engagement piece 3 of the tape running direction switching lever 35
5d is pressed in the lateral direction () direction in FIG. 4, the tape running direction switching lever 35 is rotated counterclockwise in FIG. can be switched to Then, the gear 36 rotates half a turn,
With the notch 36c facing the gear 27a, the pin 37m of the switching lever 37 enters the recess 36f of the gear 36, the rotation of the gear 36 is stopped, and the tape is stably kept running in the reverse direction. .

Further, when the manual reverse operation element 11 is operated again in the tape running state in the reverse direction as described above, the switching lever 37 is rotated clockwise in FIG.
h presses the inclined portion 36j of the gear 36, so the gear 36
is rotated counterclockwise in FIG. 4 and meshed with gear 27hK, and gear 36 is rotated counterclockwise in FIG. 4 as described above. Then, this time, the cam portion 36k of the gear 36 presses the bent pressing piece 3f of the reverse slider 38.
lb is pressed, the reverse slider 38 is slid in the direction of the arrow (g) in FIG. Therefore, as shown in FIG. 4, gear 35 and gear 23c are brought into mesh with each other, and the tape is again switched to the forward running state, and the tape is then switched between forward and reverse running.

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

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

Further, by operating the manual reverse operation element 17 while the above-mentioned high-speed operation element 20 is being operated, it is possible to switch between a tape forward high-speed running state and a tape reverse high-speed running state. It is something.

Here, as can be easily seen from the above explanation, when this cassette tape recorder is in a stopped state where none of the operators are operated, the reverse slider 38
is moved in the direction shown by the arrow ■ 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 rows 29, 30 into and out of contact with the capstans 26 and 27 in the tape forward constant speed running state and the reverse tape running constant speed state. That is, both pinch rollers 29 and 30 are
Shafts 29b and 30bK provided at one end of pinch levers 29m and 30a are rotatably supported, respectively.

These pinch levers 29m and 30m are rotatably supported by substantially cylindrical bearings 29C130c formed at the other ends of the shafts 29d and 30dK protruding from the cassette holder 28, respectively. There is.

Here, one end of the pinch lever 29g is locked with a locking portion 29cK formed on the pinch lever 29m,
A torsion sedge ring 29g is attached so that its central portion wraps around the bearing 29c and its other end is locked to a locking portion 291 formed on the pinch lever 29a. This torsion spring 29g is normally only attached to the pinch lever 29m and cannot apply any biasing force to the pinch lever 29g. and,
The pinch lever 29h has a coiled spring 29h between the end of the torsion spring 29g that is locked by the locking portion 29f and the cassette holder 28.
By being engaged, it is urged to rotate in the counterclockwise direction in FIG. However, the fifth pinch lever 29a
A bent engagement piece 3 is formed at one end of a switching control lever 39, which will be described later, and the end of the torsion slide ring 29g that can be rotated counterclockwise in the figure and is locked by the locking part 29e.
It is said that the distance is until it comes into contact with 9m.

Further, the pinch lever 30& has one end that is locked to a locking portion 30e formed on the pinch lever 30m, a central portion that wraps around the bearing 3θC, and the other end that is formed on the pinch lever 30g. A torsion spring 30g is mounted so as to be locked in the locking portion 30f. This Torsion Sgeling 30g is usually pinched/4-
30m, it cannot apply any biasing force to the pinch lever 30m. and,
The pinch lever 308 has a coiled tin ring 30 between the end of the talk and i/spring 30g on the side that is locked by the locking portion 30f and the cassette holder 28.
When h is engaged, it is urged to rotate clockwise in FIG. 5. However, the fifth pinch lever 30a
The rotation in the clockwise direction in the drawing is such that the end of the torsion sgelling sog on the side where the engaging portion 30eVc is locked is a bent engaging piece 39 formed at the other end of the switching control lever 39.
b until it comes into contact with b.

Here, the switching control lever 39 is installed so as to partially overlap the head chassis 21Je, 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 seesaw shape relative to the head shear 728e. This head chassis 28e has a shaft 211f formed approximately in the center thereof, which is fitted into a substantially cylindrical bearing 28g (shown with a hatch in FIG. 5) formed in the cassette holder 28. , which is rotatably supported by the cassette holder 28. And to the above Radsha-7
28e, when the playback operator 15 is operated, the engagement piece 21Jb protruding from the left end in FIG. 5 is pressed in the direction of arrow (G) in FIG.
It is rotated clockwise in FIG. 5 about the center to advance the previous recording/reproducing head 28C (not shown in FIG. 5).

Further, the switching control lever 39 has bent engagement pieces J 9e on both sides of the through hole 39c and at the bottom in FIG.
r J 9f are formed respectively. Among these, the bending engagement piece 39@ is arranged so that the reverse slider 38 is moved by the arrow (E) in FIG. 5 when the cassette holder 28 is closed.
) direction, the reverse slider 38 is loosely fitted into a recess 38hIIC formed in the lower part of FIG. 5. Further, the bent engagement piece 39f is attached to the reverse slider 3 when the cassette holder 28 is closed.
When the reverse slider 38 is moved in the direction of the arrow (ffi) in FIG.
In the vicinity of the recess 38b and the engaging protrusion 3B+ of the reverse slider 38, the switching control lever 39 is folded when the reverse slider 38 is slid in the directions of arrows (]0 and (G) in FIG. Curved engagement piece 39e.

Slanted portions 38j and 38k are formed to guide the recess 3fjh and the engaging protrusion 381 so as to oppose the recessed portion 3fjh and the engaging protrusion 381, respectively. When the playback operator 15 is not operated, both pinch rollers 29 and 30 are spaced apart from the capstan 26 and 27, as shown in FIG.

Now, as shown in FIG.
8 has been moved in the direction of arrow C) in the figure, that is, the tape is running in the forward direction, and the cassette recorder is stopped, and it is assumed that the playback operator 15 is operated in this state. Then, the reel shaft 23 is rotated counterclockwise in FIG. 5 by the tape drive mechanism described above, and the engagement piece 28b of the shear 728e is pressed in the direction of arrow (G) in FIG. Then, the head shear 728e is rotated clockwise in the button diagram as shown in FIG. 6, and the previous recording/reproducing head 28c is advanced to come 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 3B+ of the reverse slider 38 is in a position facing the bent engagement piece 39f of the switching control lever 39, the bent engagement piece 391 comes into contact with the engagement protrusion 31JiK. , after all, the switching control lever 3g is connected to the bent engagement piece 391 and the engagement protrusion 381.
It is rotated counterclockwise in FIG. 6 using the contact point as a fulcrum. Therefore, the bent engagement piece 39& of the switching control lever 39 presses one end of the torsion spring 29g upward in FIG. 6, and the pinch lever
29a is rotated clockwise in FIG. 6, and the pinch roller 29 comes into contact with the capstan 26 via the tape. Then, the pinch roller 29 is connected to the capstan 2.
As shown in FIG. 6, when the regeneration operator 15. Head shaft 21je and switching control lever 3
Each movement stroke, such as 9, is set. For this reason,
The torsion spring 29g generates a biasing force that rotates the pinch lever 29a clockwise in FIG. 6, and eventually the pinch roller 29 is pressed against the capstan 26 via the tape by the biasing force of the torsion spring 29g. , this is where the tape forward playback state is realized. At this time, the bending engagement piece 39b of the switching control lever 39 of the other pinch roller 30 moves downward in FIG.
Because it is rotated clockwise in Fig. 6 by the action of 0h, the fifth
As long as it is not spaced further away from the capstan 27 than the position shown in the figure, it can contribute to stable forward playback of the tape.

It is also assumed that the manual reverse operator 17 is operated in an attempt to reverse the tape running direction in the tape forward playback state as described above.

Then, as described above in the description of the forward/reverse switching mechanism, the reverse slider 38 is moved in the direction of the arrow (T) in FIG. At this time, first, reverse slider 38
The engaging protrusion 38i is the bent engaging piece 3 of the switching control lever 39.
9f and then the inclined portion 3 of the reverse streak 1da 38
It comes into contact with the bent engagement piece 39e of the 8J-11 switching control lever 39. Then, since the playback operator 15 remains locked at the operating position, the spare chassis 28e is moved to the sixth position.
Since it is fixed at the position shown in the figure, as the reverse slider 38 is moved in the direction of arrow (E) in FIG. It will now be moved to the middle and below. Therefore, the switching control lever 39 is rotated clockwise in FIG. 6 using the contact point between the bent engagement piece 39e and the inclined portion 38j as a fulcrum. Then, when the S/4-Snull slider 38 is sufficiently moved in the direction of the arrow (G) in FIG. It is fitted into the recess 3FIb and held stably. At this time, the switching control lever 3
The fulcrum 9 is the contact point between the bent engagement piece 39e and the recess 311b.

Then, when the bending engagement piece 3 of the switching control lever 39
9b connects one end of the torsion spring 30g to the seventh
When pressed upward in the figure, the pinch lever 30h is rotated counterclockwise in FIG. 7, and the pinch roller 30 comes into contact with the capstan 22 through the tape. Here, when the pinch roller 30 comes into contact with the capstan 27, as shown in FIG.
The playback operator 15.
Each movement stroke of the head chassis 28e, the switching control lever 39, etc. is set. For this reason, the torsion spring sogtd, Hinchle/4-30h is
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 torque spring 30g. At this time, the reel shaft 24 is rotated clockwise in FIG. 7 by the above-mentioned chip drive mechanism, thereby realizing a tape reverse playback state. At this time, the bending engagement piece 39h of the switching control lever 39 of the other pinch roller 29 moves downward in FIG. 7, so the pinch lever 29m moves counterclockwise in FIG. Since the tape is rotated in the opposite direction, it is not separated from the capstan 26 further than the position shown in FIG. 5, which contributes to stable tape replay 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 the arrow (g) in FIG. Then, the recess 3 of the reverse slider 38
8h is released from the bending engagement piece 39e of the switching control lever 39, and then the inclined portion 38k of the reverse slider 38 comes into contact with the bending engagement piece 39f of the switching control lever 39. Since the playback operator 15 remains locked at the operating position and the chassis 28e is fixed at the position shown in FIG. 7, the reverse slider 38 is moved downward in the direction shown in FIG. As the bending engagement piece 3
9f is moved downward in FIG. 7 along the inclined portion 3FIk. Therefore, the switching control lever 39 is sequentially rotated counterclockwise in FIG. 7 using the point of contact between the bent engagement piece 39f and the inclined portion 38 as a fulcrum. When the reverse slider 38 is sufficiently moved in the direction of the arrow (F) in FIG. As described above, it is secured to the engaging protrusion 381 and held stably. Thus, a tape reverse playback state is realized.

Now, in the state shown in FIG. 5 again, it is assumed that the reverse slider 38 is moved in the direction of arrow (in the figure) and the cassette tape recorder is stopped with the tape running in the reverse direction. Assume that the playback operator 15 is operated.At this time, the concave portion of the i4-slider 38
As the head shear 728e is rotated clockwise in FIG.
The tape is rotated clockwise in FIG. 5 using the contact point with b as a fulcrum, and as a result, the tape is played in the reverse direction as shown in FIG. 7. Then, each time the manual reverse operation element 17 is operated, the states shown in FIGS. 6 and 7 described above are alternately repeated.

Here, we have described the control of the pinch rollers 29 and 30 in the manual reverse function in which the tape running direction is reversed by operating the manual reverse operator 17, but this is because the tape running stop detection mechanism stops the tape running. The same explanation can be given to the auto-reverse function that automatically reverses the tape running direction in a detected state. The pinch rollers 29 and 30 are controlled by the playback operator 15 and the recording operator 1.
It goes without saying that the same explanation as above can be made even when in a recording state in which both 6 and 6 are operated together.

Therefore, according to the mechanism for selectively bringing the pinch roller 29.30 into contact with the capstan 26.27 as explained in FIGS. 5 to 7 above, the capstan 26.27
Since the pinch rollers 29.30 on the VC contacting side are moved in the direction of contacting the capstans 26.27 via the switching control lever 39, the operating force of the playback operator 15 can be reduced, and Said motor 2
5 can also be reduced.

In other words, in this regard, conventional pinch roller control means biases both pinch rollers together with a spring in the direction of contacting both capstans, and reduces the operating force of the playback operator and the moving force of the reverse slider. This is used to pull one pinch roller away from the cab stan 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, the moving force of the reverse slider, and the load applied to the shimotor increase. In this case, in order to press the pinch roller against the cab stun and to ensure stable running of the tape, the above-mentioned spring must have a certain biasing force on base running, and this biasing force is used for regeneration. This places a large load on the operator and motor.

However, as mentioned above, Sgeling 29h.

30h selectively moves the pinch rollers 29, 30, which are urged in the direction of separating the capstans 26, 27, from the capstans 2-13-. 27, the above-mentioned sugering 29 can be moved in a direction in which it is pressed against
h, 30b need only have a biasing force sufficient to separate the pinch roller 29.30 from the capstan 26.2'1, and this biasing force is extremely weak compared to the biasing force of the conventional spring described above. Since the operating force of the playback operator 15 and the moving force of the reverse slider 38 are sufficient,
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 tape is running at a constant speed in the forward and reverse directions.
Since the contact point between the bent engagement piece J9f and the engagement protrusion 381 and the contact point between the bent engagement piece 39e and the recess 38h are used as fulcrums for rotation, the bending engagement piece can be rotated in a narrow space. Each rotation stroke of the joining piece J 9 m + 39b and the movement stroke of the cinch rollers 29 and 30 can be made large, and this 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 this through hole 23d.
A shaft 231 is passed through 3e. This shaft 23f is located between a recess 23g formed in the upper part of the bearing 23e in FIG. 8(,) and a washer 23h fitted in the upper end of the shaft 231 in FIG. 8(
8) It is biased towards the upper middle part. Further, a substantially conical operating portion 23j is formed at the middle lower portion of the shaft 231 in FIG. 8(8) and below the main chassis 22. As shown in FIG. A lock lever 40 and a switch lever 41 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 When the tape high-speed running operator 20 is operated and the shaft 231 is moved downward in FIG. 8, the shaft 23f is moved at that position. Further, the switch lever 41 is
The governor circuit that controls the rotational speed of the motor 25 is connected to and disconnected from a leaf switch (described later) that is connected to the motor 25 and disconnected from the motor 25, and controls the leaf switch to be turned on or off. It is something to do. The lock lever 40 and the switch lever 41 are both biased so as to come into pressure contact with the operating portion 23j.

Further, a substantially cylindrical holder 231 is rotatably fitted on the outer peripheral side of the bearing 23e. The middle and lower part of this holder 231 in FIG. Furthermore, the bearing 23
A reel cap 23m, which is fitted to the reel hub of the compact tape cassette, is rotatably fitted to the outer circumferential side of e. This reel cag 23m has a coiled sedge ring 23a interposed between its middle lower end in FIG. 8(,) and the gear 23m, as shown in FIG.
8) It is biased towards the upper middle part. When the reel cap 23m moves upward in FIG. 8, the upper end of the reel cap 23m in FIG.
8(a) until it comes into contact with a washer 23o attached to the middle upper part of FIG.

Here, the reel cap 23m and the holder 23t are fitted so that they partially overlap, as shown in FIG. 8(,). In this mated state, reel character 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 2o is operated, the upper end of the shaft 23f in FIG. , is slid downward in the figure against the biasing force of the sedge ring 231. At this time, the mouth.

After the flavor 40 is once moved to the left in FIG. 8(b) along the inclined portion 23k of the operating portion 23j, the flavor 40 is moved to the left in FIG. 8(b).
), the shaft 23f is engaged with the bottom surface 23p of the operating portion 23j, and the shaft 23f is locked therein at the operating position. At this time, the switch lever 41 is moved along the inclined portion 23k of the operating portion 23j in the direction of the inner cloth in FIG. It acts to separate the two. Note that this switch lever 41 is shown in FIG. 8(b).
), it is configured so that it is not locked to the bottom surface portion 23p of the operating portion 23j.

Here, FIG. 9 shows the lock lever 40, the switch lever 41, 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 at 0 m. 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 41 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 23'' of the reel shaft 23. The switch lever 41 has a hook portion 41a protruding from one end thereof and a main chassis 22.
A coiled sedge ring 41d is engaged between the holder and the holder, so that the bent engagement piece 41b is pressed into contact with the operating portion 23j. It is.

Here, an engaging protrusion 41e is formed at the other end of the switch lever 41. This engagement protrusion 41e is connected to the leaf switch 42 attached to the main chassis 22.
A pair of contact pieces 42a.

It is opposed to one of the contact pieces 42b. 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. 10, one end of the lock lever 40 is engaged with the bottom surface 23p of the operating portion 23j, thereby locking the shaft 23f at the operating position. Further, the bending engagement piece 41b of the switch lever 41 is pressed by the operating portion 23j and rotated clockwise in FIG. 42a to turn on the leaf switch 42. Therefore, the governor 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 will 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 will run at high speed in the reverse direction. This is where high-speed tape running begins. By operating the manual reverse operator I7 while the tape is running at high speed, the tape high-speed running direction can be switched as described above.

Therefore, as described above, the reverse slider 38 of the forward/reverse switching mechanism is associated with the tape running direction switching lever 35 of the tape drive mechanism, and the tape running direction can be switched in the correct direction by operating the manual reverse operator 17 when the tape is running at high speed. By using a reverse switching mechanism, there is no need for independent mechanisms to achieve high-speed tape running in the forward and reverse directions, and the same tape drive mechanism can be used to run the tape at constant speed. The tape running direction can be switched between when the tape is running at high speed and when the tape is running at high speed, the configuration is extremely simplified, and the miniaturization of the cassette tape recorder can be effectively promoted. Since only one reel shaft 23 is used for high-speed tape running,
As will be described later, the other reel shaft 24 can be used to lock the cassette lid 13 in the closed position, especially when the compact tape cassette 12 is installed protruding from the cabinet 11 as shown in FIG. This is extremely effective for small-sized cassette tape recorders of this type.

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 high-speed tape running states through the forward/reverse switching mechanism as described above, all tape running can be realized using the same tape drive mechanism. The structure can be simplified, and the cassette tape recorder can be made more compact than ever before. In addition, in the conventional cassette l' tape recorder shown in the above publication number,
Since the compact tape cassette is completely stored in the cabinet with the cassette lid closed, the locking mechanism for the cassette lid can be installed in the cabinet. 1
In the cassette tape recorder shown in the figure, a major problem is the means for reliably locking the cassette lid I3 in the closed position. Therefore, by using the manual reverse operator 17 to switch the tape running direction during high-speed tape running through the forward/reverse switching mechanism as described above, it is possible to control the governor 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 13, which also contributes to the miniaturization of the cassette tape recorder. It is possible to promote this.

Then, as mentioned above, the manual sonographer 1
A feature of the present invention is that the tape high-speed running direction is switched by the operation in step 7 via the forward/reverse switching mechanism.

In addition, in this case, first, the switching operation means for disconnecting the governor circuit for constant speed tape running from the motor 25 and setting the motor 25 in a high speed rotation state is installed in the reel shaft 23, so it is necessary to install it in a separate cabinet. There is no need to newly install an operator on the controller 11, and the configuration can be simplified. Furthermore, when the shaft 231 of the reel shaft 23 is operated in the axial direction, the leaf switch 42 is only turned on via the switch and chiller 41. Compared to a recorder in which each member, gear, etc. of the tape drive mechanism is directly operated by a 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, of the gear 35b meshed with the gear 26a of the capstan 26, the surface opposite to the surface facing the gear 35c has an eccentric surface with respect to the shaft 35a. The eccentric cam portion 35j and the eccentric cam portion 35
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 35b, opposite to the surface facing the gear 35b. The friction lever 43 has one end rotatably supported by the shaft 35m and is frictionally engaged with the gear 35e, and is biased in the direction of rotation when the gear 35c is rotated. It is.

Further, an elongated hole 4Ja is formed at the other end of the friction lever 43, and the drive lever 44 is located within this elongated hole 4311.
A protruding bottle 44g is loosely fitted to one end of the bottle. Here, the drive lever 44 has a main portion at its substantially central portion.
It is rotatably supported by a shaft 44b implanted in the palm 22, and the other end has a protrusion 44c that can engage with the eccentric cam part 35j and the engaging part 35 of the gear 35C.
and a protrusion 44 that can engage with one side of the switching lever 37.
d is formed.

Furthermore, a bottle 40 is provided at the other end of the lock lever 40.
b is planted, and the bottle 40b is loosely fitted into a recess 45m formed at one end of the regeneration port and flavor 45. The regeneration lock lever 45 has a substantially central portion rotatably supported by a shaft 45b implanted in the main chassis 22, and the other end engages with the operating section 15ml IC provided on the regeneration operator 15. When combined, the playback operator 15 can be locked at the operating position.

That is, the operating section 1511 has the same configuration as the operating section 23j provided on the shaft 231 of the reel shaft 23, and the lock lever 40 is biased counterclockwise in FIG. Therefore, the regeneration lock lever 45 is in the 9th position.
The other end is biased to rotate clockwise in the figure and is the operating section 15b.
The other end of the regeneration port and flavor 45 is latched to the bottom surface 15b of the operation section 15th when the regeneration operation element 15 is operated. It is.

A bent engagement piece 41f is still formed at the other end of the switch lever 41, and this bent engagement piece 411 is connected to the retention piece 4 formed at one end of the reverse function selection lever 46.
It is opposite to 6a. This reverse function selection lever 4
6 is rotatably supported by a shaft 46b implanted in the main chassis 22 at its substantially central portion, and the other end serves as the aforementioned reverse function selection switch 46c. A shaft 46d is implanted at the other end of the reverse function selection lever 46, and a substantially central portion of an automatic stop lever 47 is rotatably supported by this shaft 46m.

The automatic stop lever 47 has a protruding piece 47m that can be engaged with a bent engagement piece 40c formed on one side of the lock lever 40 at one end thereof. The automatic stop lever 47 still has the drive lever 4 at its other end.
An engaging piece 47b that can be engaged with the protrusion 44a of No. 4 is formed.

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 performing the auto-reverse function when the tape is operated in the H) direction. The reverse function selection lever 46 automatically reverses the tape running direction when the tape reaches the end with the user operating the reverse function selection switch 46c in the direction of arrow (I) in FIG. An auto-reverse function will be required. Further, the reverse function selection lever 46 automatically stops when the reverse function selection switch 46a is operated in the direction of arrow (H) in FIG. The lever 47 is positioned such that its protruding piece 47m and retaining piece 47b face the folding engagement piece 40c of the lock lever 4Q and the protrusion 44c of the drive lever 44, respectively, and the reverse function selection switch 4
6c is rotated in the direction of arrow (I) in FIG. 9, that is, when it is rotated clockwise in FIG. The bent engagement piece 40c and the protrusion 4 of the drive lever 44
4c, respectively, so as not to 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.
The operation part 23J is locked to the lock lever 40, and the switch lever 41 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 9, so that the tape is run at high speed in the forward or reverse direction. Here, when the switch lever 41 is rotated clockwise in FIG. 10, its bent engagement piece 47f presses the engagement piece 46m 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
7a and the engagement piece 47b are opposed to the bent engagement piece 40a 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 that is frictionally engaged with the gear 35c is rotated clockwise in FIG. Eccentric cam portion 35J formed in
It will be pressed into contact with the situation. At this time, the drive lever 44 performs a swinging motion in response to the rotation of the eccentric cam portion 35j without its protrusion 44c being engaged with the engaging portion 35k of the gear 35b, so that the drive lever 44 can maintain stable high-speed tape operation. The running condition is maintained.

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 into contact with the curved 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 swings at the position where its protrusion 44c is pressed by the maximum diameter portion 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 47m of the automatic stop lever 47, causing the automatic stop lever 47 to rotate clockwise in FIG. 11. Therefore, the protruding piece 47m of the automatic stop lever 47 presses the bent engagement piece 40c of the lock lever 40, causing the opening and the flavor 40 to move to the first position.
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 section 23j, so that the shaft 23f of the reel shaft 23 is returned to the non-operating position by the biasing force of the spring 23+ shown in FIG. Automatic stopping is performed when the tape is running at high speed.

Next, assume that the cassette tape recorder is in a stopped state and the playback operator I5 is operated. Then, the ninth
As shown in the figure, the bottom surface portion 15b of the operating section 15m provided on the playback operator I5 is engaged with the playback port and flavor 45, and the playback operator 15 is locked at the operating position, and as described above, the tape is The vehicle 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 the speed is lower than when the tape is running at high speed. As explained above, the drive lever 44 does not swing in response to the rotation of the eccentric cam portion 35j, and a stable constant speed tape running state is maintained.

In such a constant tape running state, in order to automatically stop the tape when it reaches the end, the reverse function selection lever 46 is set to the reverse function selection switch 46c.
9 in the direction of the arrow (B) in FIG. 9, rotate it counterclockwise in FIG.
And the retaining piece 47b is the opening, and the bent engagement piece 40 of the flavor 40
c 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 44c of the drive lever 44 engages with the engagement piece 47b of the automatic stop lever 47, as previously explained in FIG. Then, the mouth and flavor 40 are rotated clockwise in FIG. 11, and the reproduction lock lever 45 is accordingly rotated counterclockwise in FIG. 11. Therefore, the other end of the regeneration lock lever 45 is
Since the operating section 15m is detached from the bottom surface 15b of the operating section 15m provided at the tape 5, the playback control 15 is returned to the non-operating position, and the tape playback state is automatically stopped at this point.

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 (I) in FIG. direction and rotate it clockwise in FIG. 9 to release the automatic stop lever 47.
The protruding piece 47m and the retaining piece 47b are not opposed to the bent engagement piece 40a of the flavor 40 and the protrusion 44a of the drive lever 44, respectively.

Then, the tape reaches the end, the rotation of the gear 35c is stopped, and as mentioned earlier, the protrusion 44c of the drive lever 44
Even if the drive lever 44 is rotated counterclockwise in FIG. 9, and the automatic stop lever 47 is set so as not to be rotated clockwise in FIG. For this reason, playback port, flavor 4
5 is not moved at all, and the playback operator I5 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
d presses one side of the switching lever 37 and rotates the switching lever 37 clockwise in FIG. For this reason,
As described above in the description of the forward/reverse switching mechanism, the reverse slider 38 is driven, the tape running direction is reversed, and 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 attached state of the gears 35b, 35c and the friction lever 43. That is, the shaft 35m implanted in the main chassis 22 is composed of a base portion SSt 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 48a formed in a sub-chassis 48 arranged in parallel with the main chassis 22.

Here, a substantially cylindrical support member 49 capable of supporting the gears 35b and 35c in frictional engagement with each other is loosely fitted onto the shaft 35tr, details of which will be described later.

A substantially cylindrical support portion 35n formed at the center of the gear 35b is fitted on the outside of the support member 49. In this case, the stepped portion 35° formed at the upper portion of the support portion 35n in FIG. 12 is locked with the collar portion 49m formed at the upper end portion of the support member 49 in FIG. 35b is prevented from coming off upwardly in FIG. 12 from the support member 49.

The support part 35n of the gear 35b still has a through hole 35p formed in the center of the gear 35c on the outside thereof.
It is rotatably supported by being loosely fitted. Furthermore, a ring-shaped friction member 5θ 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, the lower end portion of the support member 49 in FIG. 12 has a large diameter flange portion 49b.
is formed.

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

This spring 49c is attached to the bottom surface of the support portion 35q and the collar portion 49. of the support member 49. By being engaged between the gear 35c and the gear 35b, the gear 35c is urged upward in FIG.

Therefore, the gear 35c is connected to the gear 35 through the friction member 50.
b, and the gears 35b and 35c are frictionally engaged therewith.

To assemble the gears 35b and 35c into a frictionally engaged state, first, the gear 35c is loosely fitted into the support portion 35n of the gear 35b via the friction member 50. and,
Support part 35n of gear 35b (!: Support part 3 of gear 35c
This is done by loosely fitting a spring 49c between the gear 35b and the gear 35b, and finally inserting the support part 49 into the support part 35n of the gear 35b from below in FIG.

Here, as shown in FIGS. 13(a) and 13(b), the upper part of the support member 49 in FIG.
A plurality of (four in the illustrated case) notches 49d are formed in the vertical direction including 11. In addition, FIG. 13(b) shows
This figure shows a cross-section of the same figure (, ) taken along the arrow (X-X'). Therefore, the support member 49 can be inserted into the support portion 35n of the gear 35b from below in FIG. The gear 35b expands and is locked to the stepped portion 350.

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

The friction member 50 and the spring 49a are supported by the support member 49 as one unit.

And, before the subchassis 48 is installed,
The support member 49 is loosely fitted onto the shaft 35a from the flange 49m side. The depth of 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 35m of the shaft 35m.

In the above state, the support portion 35q of the gear 35c is
A ring-shaped friction member 51, one end of the friction lever 43, a washer 52, and a coil-shaped spring 53 are loosely fitted in this order. Here, the above spring 5
3 is formed to be larger than the diameter of the flange 49b of the support member 49. Therefore, when the sub-chassis 48 is attached, the friction lever 43 is moved through the friction member 51 by the biasing force of the spring 53. The gear 35c is pressed into contact with the gear 35c, and the gear 35c and the friction lever 43 are frictionally engaged with each other.

Therefore, according to the above-described attachment means for the gears 36b 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 49 can be easily manufactured by molding a synthetic resin material, and the structure can be simplified.

Here, in the above-described attachment means for the gears 35b and 35a, the flange 49m of the support member 49 is attached to the stepped portion 350 of the gear 35b.
Since the support member 49 is locked with the gear 35b, the support member 49 is rotated together with the gear 35b. By the way, there will be no problem if the supporting member 49 is 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, the rotational speed and torque are different. etc. are subject to change. For this reason,
If a slip occurs between the support member 49 and the gear 35b, and the support member 49 rotates or stops even when the gear 35b is rotated, the rotational speed of the gear 35b becomes uneven9, and as a result, A problem arises in that tape running is adversely affected.

Therefore, as shown in FIG. 14, the stepped portion 35 of the gear 35b
0, a protrusion 491 is formed corresponding to the notch 49d of the support member 49, and the flange 49m of the support member 49 is connected to the gear 35.
Step part b: L, with the state locked in -5o, the depth of cut is 4
The protrusion 491 is fitted into the inner portion 9d. Then,
The support member 49 is configured to rotate completely integrally with the gear 35b without slipping.

Further, the other flange portion 49b of the support member 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 the coiled spring 53 is rotated in the J) direction, the winding direction of the coiled spring 53 is such that the end facing the protrusion 49g has an escape from the protrusion 49g, that is, the supporting member 49 The tip of the sedge ring 53 is oriented so that it does not come into contact with the protrusion 49g when it is rotated.

For this reason, when the support member 49 is rotated in the direction of arrow (J) in FIG. When pressed, the flange portion 49b is also pushed out so as to expand outward. 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 13 in the closed position, the other reel shaft 2
4 will be explained. That is, in FIG. 16, the flat surface of the cassette lid 13 has through holes 13b for attaching the stop operator 14, the playback operator 15, the manual reverse operator 17, the display section 18, etc.
13e to 13e are formed, respectively. Further, a through hole ZSt for rotatably attaching the cassette lid 13 to the cabinet 11 is formed in the side of one end 13m of the cassette lid 13.

The cassette lid 13 has the eject operator 21 and the lock slider 5 on the bottom side in FIG.
A support body 55 supporting 4 etc. is attached. That is, the support body 55 has a substantially plate shape and is attached to the cassette lid 1.
The main body part 55a has a through hole 55a and a cutout part 55b formed in the part facing the window part 19 of No. 3 and the tape high-speed running operator 20, and a main body part 55c that follows the shape of the cassette lid 13 from both ends of the main body part 55c. These are similar to the arm portions 55d and 55e in the shape of an abbreviation that protrudes.

Further, the main body portion 55c of the support body 55 has a through hole 5 therein.
Elongated holes 55f and 55g are provided on the opposite side of the notch 55b of 5a.
is formed. Of these, the top of the reel shaft 24 is loosely inserted into the elongated hole 551 with the cassette lid 13 closed. Further, a step portion 55b having a substantially U-shape in plan is formed at the end of the main body portion 55a on the side where the arm portion 55e is formed, and an eave-like portion 551 of the step portion 55b. A long hole 55j is also formed therein.

Here, the mouth and the wedge slider 54 are formed by bending a metal plate into a substantially crank shape, and the blade portion 54m has a substantially square shape at a position facing the elongated hole 55f of the support body 55. A through hole 54b is formed. In addition, this mouth and the cross slider 54 are provided with long holes 55f and 5# of the support body 55.
Screw holes 54 c * 54 d g 54 s are formed at positions facing the eave-like portion 551 of the stepped portion 55h and the stepped portion 55h, respectively.

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 part 548 and the other part 54f of the lock slide finish 54 are made in contact with the lower surface of the support body 55 in FIG. 16 and the upper surface of the eave-shaped part 551, respectively.

On the other hand, the ejector 21 is formed into a substantially T-shape in plan, and has a screw hole 54c in the opening and the box slider 54.
Through holes 21m, 21b, 21 are provided at positions facing 54e to 54e.
c are formed respectively. This eject operator 2
A substantially cylindrical spacer portion 21d is formed on the lower surface side of I in FIG. 16 so as 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 21 in FIG. 16, a protrusion 21e is formed near the through hole 21b to be loosely inserted into the elongated hole 55g of the support body 55.

As described above, after installing the lock slider 54 on the lower surface side of the support body 55 in FIG. Eject operator 2 from the top side in Figure 16
1 and tightened with screws 57. Then, as shown in FIG. 17, the spacer portion 21d of the ejector 2 is loosely fitted into the elongated hole 55f of the support 55, and the through hole 21!
The screw 57 inserted through Jd is screwed into the screw hole 54c of the lock slider 54. In addition, the eject operator 2
The protrusion 21e of the ejector 21 is loosely fitted into the elongated hole 55g of the support 55, and the screw 57 inserted through the through hole 21b of the ejector 21 is screwed into the screw hole 54d of the lock slider 54. Further, the screw 57 inserted through the through hole 21c of the ejector 21 is inserted into the screw hole 54 of the lock slider 54.
eVc is screwed on, and the eject operator 21 and the lock slider 54 are supported on the support 55 so as to sandwich the support 55 so as to be slidable in the directions of arrows (K) and (L) in FIG. be.

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 21.
(including the lock slider 54) is indicated by the arrow (K) in Fig. 17.
You'll start to feel like you're in the right direction. At this time, one end of the eject operator 21 projects outward from the end of the cassette lid 13. The ejector 21 can be depressed by the user in the direction of the arrow (L) in FIG. 17 against the biasing force of the spring 56.

As described above, the support body 55 on which the ejector operator 21 and the lock slider 54 are supported is attached to the cassette lid 13.
It is attached to the lower surface side in FIG. 16. In this case, the portion of the lower surface of the cassette lid 13 in FIG. 16 that faces the eject operator 21 is a thin wall portion 13fg, as shown in FIG. 17, and the portion other than the thin wall portion 13g is is closely attached to the support 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 a beam cap 24f is rotatably supported on the shaft 24e.

Here, assume that the cassette lid 13 is currently in the open state and that the cassette lid 13 is now 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 24d, 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 I3
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 surface 24h of the
is returned to its original position by the biasing force of the spring 56, and one end of the through hole 54b is engaged with the bottom surface 24b of the lip 24d, thereby locking the cassette lid 13 in the closed position. be.

When the eject operator 21 is operated in the direction of the arrow (L) in FIG. 17 with the cassette lid I3 still in the locked state as described above, one end of the through hole 54b of the lock slider 54 opens and the bottom surface of the lip 24d opens. 24h, the opening of the cassette lid 13 in the closed position is released, and the cassette lid 13 can be opened. Therefore, as described above, the eject operator 21 and the lock slider 54 are supported by a support 55, and the support 55
By attaching it to the cassette lid 13,
When the cassette lid 13 is closed, only the part of the eject operator 21 that is pressed by the user is exposed to the outside, and the lock slider 54 is not visible from the outside at all, so this does not spoil the aesthetic appearance of the cassette tape recorder. There is no
The eject operator 21 and the lock slider 54 can be reliably attached with a simple structure.

In addition, the head of the screw 57 is made so that it cannot be touched from the outside both when the cassette lid 13 is in the open state and in the closed state, which makes it structurally effective. be.

Next, as shown in FIG. 18, the main chassis 22
Among them, in the vicinity of the reel shaft 24 that opens the cassette lid 13 in the closed position, there is a connection terminal portion 58 that is contacted by the connection terminal provided on the tuner bag when the tuner bag is attached. It is provided. That is, the tuner 4 has connecting terminals protruding from the flat surface facing the main chassis 22 that come into contact with the respective connecting terminals 58m of the connecting terminal section 58 when the tuner 4 is mounted on the cassette tape recorder. Signals are transmitted between the tuner back and the cassette tape recorder.

As described above, by wiring the connection terminal portion 58 for connecting to the tuner pack near the reel shaft 24, it is possible to securely establish an electrical connection with the tuner pack. be. That is, when the cassette lid 13 is closed, the part that is connected to the reel shaft 24 will be supported most reliably, so the cassette lid 13 is connected to the tip and the tip near the reel shaft 24. By arranging the connection terminal portion 58, it is possible to securely establish contact between the connection terminal of the tuner back and the connection terminal 58a of the cassette tape recorder, thereby achieving good radio reception. It is something.

Here, the connection terminal 58a is shown in FIG. 19(a).
# (b) As shown in # (e), the reel shaft 24
It may be arranged in a circular shape surrounding the periphery of the reel shaft 24, divided into two parts on both sides of the reel shaft 24, or arranged in an arc shape along the periphery of the reel shaft 24. Of course.

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, the forward/reverse switching mechanism for switching the tape constant speed running direction is used to also control the tape high speed running direction, thereby achieving a stable and reliable structure with a simple configuration. Accordingly, it is possible to provide an extremely good tape recorder device that can realize smooth tape running and is suitable for downsizing.

[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 chip recorder mechanism of the cassette tape recorder, and Fig. 3 is an external view of a TESO recorder device according to the present invention. This is a configuration diagram showing one embodiment of the tape drive mechanism of the tape recorder mechanism section.
The figure is a configuration diagram showing the forward/reverse switching mechanism of the tape recorder mechanism section, FIG. 5 is a configuration diagram showing the pinch roller control mechanism of the tape recorder mechanism section, and FIGS. 6 and 7 are the same pinch roller control mechanism, respectively. FIG. 8 is a side sectional view for explaining the configuration and operation of 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, 10 and 11 are respectively explanatory diagrams of the operation of the tape running stop detection mechanism, FIG. 12 is a side sectional view showing the gear attachment mechanism of the tape recorder mechanism, and FIGS. 13 and 14 are the same. A detailed explanatory view of the gear attachment mechanism, FIG. 15 is a perspective view showing the spring release mechanism of the gear attachment mechanism, 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 plan views showing the connection mechanism of the tuner bag and modifications thereof 11...cabinet, 12 ...Content / 4-point tape cassette, 13...Cassette lid, 14...Stop operator, 15...Playback operator, 16...Record operator, 17...Manual reverse operator , 18...Display section, I9...Window section, 20...Tape high-speed running operator, 21...Eject operator, 22...Main chassis, 23.24...Reel shaft, 25...Motor, 26.27...Capstan, 28...Cassette holder, 29.30...Pinch roller, 31.32
...Flywheel, 33...Belt, 34...
Gooley, 35...Tape running direction switching lever, 36...
...Gear, 37...Switching lever, 38...Reverse slider, 39...Switching control lever, 40...Rock Leno 4-147...Switch lever, 42...Leaf switch, 43...・Friction lever, 44... Drive lever, 45... Regeneration lock lever - 146... Su/
(-, x, function selection lever, 47... automatic stop lever, 48... subchassis, 49... support member, 50
．． 51...Friction member, 52...Washer, 53...
・Spring, 54...Lock slider, 55...
Support body, 56... Spring, 57... Screw, 58
...Connection terminal section. Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 7 Figure 8 (a) (b) Figure 12 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 (C) 8a

Claims (1)

[Claims] a tape drive mechanism that puts the tape in a constant speed and high speed running state by switching the tape running motor between a constant speed and a high speed rotation state; and a tape constant speed running operation means that puts the tape running motor in a constant speed rotation state. , a forward/reverse switching mechanism for reversing the tape constant speed running direction in conjunction with a tape end detection operation or an operation of a manual reverse operation member in a chive constant speed running state by the tape constant speed running operation means, and the tape running motor. a high-speed tape running operation means for setting the tape in a high-speed rotation state, and the forward/reverse switching mechanism changes the high-speed running direction of the tape by operating the manual reverse operation member in the high-speed tape running state by the tape high-speed running operation means. A tape recorder device characterized in that the tape recorder device is configured to switch using.