JP2000260084A - Tape recorder and/or reproduce - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability or the like for the fast-forwarding or rewinding operation of a tape. SOLUTION: This device is provided with a switching operation section 24 moved between first and second positions around a center position to switch between tape fast-forwarding and rewinding, a tape running mechanism for fast-forwarding or rewinding a tape when a switching operation section 25 is operated to the first or second position, a return spring 27 for returning the switching operation section 25 operated in the state of recording or reproducing signal in the tape from the first or second position to the center position, a returning means 18c for returning the switching operation section operated in a signal non-recording or non-reproducing state in the tape to the center position, and a held member 26 held in an application position where the spring force of the return spring is applied on the switching operation section 25 when the switching operation section 25 is operated to the first or second position in the signal recording or reproducing state in the tape, or held in a non- application position where the spring force of the return spring is not applied on the switching operation section when the switching operation section 25 is operated to the first or second position in the signal non-recording or non-reproducing state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape recording and / or reproducing apparatus. More specifically, the present invention relates to a technique for improving operability in tape fast-forward and rewind operations.

[0002]

2. Description of the Related Art In a tape recording and / or reproducing apparatus capable of recording and / or reproducing signals by running a magnetic tape, or both, for example, a cassette tape player, the magnetic tape is moved in one direction. There are ones provided with a forward running mode (FWD mode) in which the vehicle runs forward to perform the regeneration, and a reverse running mode (REV mode) in which the vehicle runs reversely in the direction opposite to the one direction to perform the regeneration. In such a cassette tape player, generally, a fast-forward mode (FF mode) in which a magnetic tape is rotated forward at high speed to perform fast forward, and a rewind in which the magnetic tape is reversed at high speed to perform rewinding. The mode (REW mode) can be set.

FIGS. 29 and 30 show a part of a mechanism for setting an FF mode and a REW mode in a conventional cassette tape player.

A lock lever a is rotatably supported on a mechanical chassis (not shown), and a lock pin b and a spring engaging piece c are formed on the lock lever a. Then, both ends of the lock spring e are engaged between the spring engagement piece c of the lock lever a and the spring support piece d formed on the mechanical chassis, whereby the lock lever a is shown in FIGS. 29 and 30. It is urged in the A1 direction.

A switching lever f is provided above the lock lever a.
29 and 30 are arranged so as to be movable in the directions of F-R shown in FIGS. 29 and 30, and the switching lever f is formed with a spring engagement piece g and a cam hole h. A first positioning edge i for positioning and a second positioning edge j and a third positioning edge k on opposite sides of the first positioning edge i are formed on the periphery of the cam hole h. The lock pin b of the lock lever a is engaged with any one of these positioning edges i, j, and k. The center return spring m is engaged so as to sandwich the spring engagement piece g and the spring support piece 1 formed on the mechanical chassis.

When the lock pin b of the lock lever a is engaged with the first positioning edge i of the switching lever f, the STOP mode in which the tape is not running is set (see FIG. 29).

When the switching lever f is moved in the F direction from the STOP mode by the operation of a predetermined knob (not shown) by the operator, the tape is fast-forwarded. In the FF mode, the lock pin b is engaged with the second positioning edge j by the spring force of the lock spring e, and the switching lever f is locked (see FIG. 30). At this time, the spring force of the center return spring m acts on the switching lever f, and the switching lever f is urged in the R direction.

When the operator operates a predetermined knob in the FF mode, the engagement of the lock pin b with the second positioning edge j is released, and the switching lever f is moved in the R direction by the spring force of the center return spring m. Be moved. Since the switching lever f moved in the R direction is also urged in the A1 direction by the spring force of the lock spring e, the lock lever a moved in the R direction is rotated in the A1 direction and the lock pin b Are engaged with the first positioning edge i, and the STOP mode is set again.

Conversely, when the switching lever f is moved in the R direction, the REW mode is set, the tape is rewound, and the lock pin b is moved to the third positioning edge k by the spring force of the lock spring e. The switching lever f is locked by being engaged, and the switching lever f is urged in the F direction by the spring force of the center return spring m. When the switching lever f, which has been moved in the R direction, is moved in the F direction, the lock lever a is rotated in the A1 direction, the lock pin b is engaged with the first positioning edge i, and the STOP mode is resumed. Is set (see FIG. 29).

[0010]

However, as in the above-described conventional cassette tape player a, the spring force of the lock spring e always acts on the lock member a, and the switching lever f moves in the F or R direction from the center position. When the configuration is such that the spring force of the center return spring m acts on the switching lever f when pressed, the lock spring e between the FF mode and the STOP mode and between the REW mode and the STOP mode.
And the spring force of the center return spring m compete with each other, and a large force is required when operating the above-mentioned predetermined knob, resulting in poor operability.

In addition, since the spring force of the lock spring e and the spring force of the center return spring m compete with each other, it is necessary to set a proper balance between the two. However, this balance is strict in order to ensure a proper operation state. And the setting of the balance is troublesome in terms of design work.

Accordingly, it is an object of the present invention to provide a tape recording and / or reproducing apparatus which overcomes the above-mentioned problems and improves the operability in fast-forwarding and rewinding a tape.

[0013]

According to the present invention, there is provided a tape recording and / or recording method.
Alternatively, in order to solve the above-described problem, the playback device is configured to move between the first position and the second position with reference to the center position and to switch between fast-forward and rewind of the tape, A tape traveling mechanism for fast-forwarding or rewinding the tape when the switching operation unit is operated to the first position or the second position, and a switching operation unit operated in a state of recording or reproducing a signal on the tape. A return spring for returning from the first position or the second position to the center position, return means for returning the switching operation unit operated in a non-recording or non-reproduction state of the signal to the tape to the center position, and a signal for the tape When the switching operation unit is operated to the first position or the second position in the recording or reproducing state of the above, the return spring is held at the operating position where the spring force acts on the switching operation unit, and the signal is not recorded on the tape. Or a held member that is held at a non-operating position where the spring force of the return spring does not act on the switching operation unit when the switching operation unit is operated to the first position or the second position in the non-reproduction state. It is.

Therefore, in the tape recording and / or reproducing apparatus of the present invention, in the non-recording or non-reproducing state of the signal on the tape, the switching operation unit returns from the first position or the second position to the center position. When the signal is recorded or reproduced on the tape, the switching operation unit is returned from the first position or the second position to the center position by the return spring.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiment described below, the present invention is applied to a portable cassette tape recorder having a so-called auto-reverse function capable of performing normal reproduction and reverse reproduction.

First, the configuration of a cassette tape recorder will be described mainly with reference to FIGS. FIG. 2 shows a stop mode of a magnetic tape drive mechanism (hereinafter, referred to as a main mode) mainly provided on the rear side of the mechanical chassis 11 of the cassette tape recorder.
This is called “STOP mode”. 3) shows the state in the STOP mode of the magnetic tape drive mechanism mainly arranged on the plane side of the mechanical chassis 11 of the cassette tape recorder. In addition, the magnetic tape drive mechanism in each figure is shown in a state viewed from one side for convenience.

The cassette tape recorder 1 has a housing 2 in which necessary members and mechanisms are arranged. A cassette mounting portion 3 is formed in the housing 2, and the cassette mounting portion 3 is opened and closed by a lid 4 rotatably supported by the housing 2.
Then, when the lid 4 is rotated and the cassette mounting portion 3 is opened, the tape cassette 5 can be mounted on the cassette mounting portion 3 (see FIG. 1).

The cassette tape recorder 1 has a playback button 6 for setting a playback mode for running a tape and playing a recorded signal, and a recording button for setting a recording mode for running a tape and recording a signal. 7, a stop button 8 for stopping the running of the tape, an FR switch 9 for running the tape at a high speed by a slide operation to perform fast forward or rewind, and a direction switch 10 for switching a running direction of the tape by the slide operation. (See FIG. 1).

In the cassette tape recorder 1, a normal reproduction mode (hereinafter, referred to as a "NOR mode") in which the tape runs in one direction as a reproduction mode and a tape is run in the opposite direction to the one direction. A reverse playback mode (hereinafter, referred to as “REV mode”) is set, and these two modes are switched by the direction switch 1.
It can be switched by sliding the 0. Then, in the recording mode (hereinafter,
It is called "REC mode". ), A normal recording mode in which the tape is run in one direction (hereinafter referred to as “NR”).
"EC mode". ) And a reverse recording mode in which the tape is run in a direction opposite to one direction (hereinafter referred to as “R-RE”).
"C mode". ) Can be set.

By sliding the FR switch 9 in the STOP mode, a fast-forward mode (hereinafter, referred to as "FF mode") or a rewind mode (hereinafter, referred to as "REW mode") is set. Alternatively, by sliding the FR switch 9 in the REV mode, a fast-forward mode during normal playback (hereinafter referred to as “CUE mode”) or a rewind mode during reverse playback (hereinafter referred to as “REVIEW mode”) is set. It is supposed to be.

Further, in the cassette tape recorder 1, in the NOR mode, the REV mode, the N-REC mode, the R-REC mode, the FF mode and the REW mode, the STOP mode is set by operating the stop button 8. It has become so.

As shown in FIG. 2, the mechanical chassis 11 has spring mounting portions 11a, 11b,
11c is formed.

A drive motor 12 capable of both forward and reverse rotation is disposed on the mechanical chassis 11, and a pulley 12a is attached to a rotation shaft of the drive motor 12. A flywheel 13 is rotatably supported by the mechanical chassis 11, and a belt 14 is stretched between the pulley 12a and the flywheel 13. Therefore, the flywheel 13 is rotated in the same direction as the rotation direction of the drive motor 12 by the drive of the drive motor 12.

The rotary shaft of the flywheel 13 is inserted through the mechanical chassis 1 and protrudes to the opposite side.
5 are provided. And the flywheel 13
A gear portion 13a having a small diameter is formed integrally with the center portion of the gear.

A tape running lever 16 is supported on the mechanical chassis 11 so as to be movable in the Y1-Y2 directions shown in FIG. 2, and the end on the Y2 side is bent to form a mounting portion 16a. The reproduction button 6 described above is attached. One end of a spring 17 attached to a spring attachment portion 11b of the mechanical chassis 11 is elastically contacted with the attachment portion 16a, whereby the tape running lever 16 is moved to Y.
It is biased in two directions and is located at the moving end in the Y2 direction in the STOP mode.

The tape running lever 16 is provided with a locked portion 16b and a restricting portion 16c at the X1 side edge shown in FIG.
The pressed portion 16 is formed at a side edge on the X2 side.
d and the spring hook 16e are formed to be separated from each other in the Y direction. A spring support 16f protruding in the Y1 direction is formed near the pressed portion 16d. The tape running lever 16 is provided with a vertical pressing piece 16g at a position close to the edge on the X2 side. Further, a rotation fulcrum 16h protrudes from the tape running lever 16, and the rotation fulcrum 16h protrudes toward the mechanical chassis 11 at a position where it does not interfere with the mechanical chassis 11 (see FIG. 3).

A stop lever 18 is supported by the mechanical chassis 11 so as to be movable in the Y1-Y2 direction shown in FIG. 2 so as to be aligned with the tape running lever 16, and the Y2 side edge is bent so that the mounting portion 18a is formed. The stop button 8 is attached to the attachment portion 18a. One end of a spring 19 attached to the spring attachment portion 11a of the mechanical chassis 11 is elastically contacted with the attachment portion 18a, whereby the stop lever 18 is urged in the Y2 direction and positioned at the end of movement in the Y2 direction in the STOP mode. Have been.

The end of the stop lever 18 on the Y1 side is formed as an unlocking portion 18b.
A curved pressing piece 18c is formed in a portion approaching a.

A record lever 20 is supported on the mechanical chassis 11 on the opposite side of the stop lever 18 with the tape running lever 16 interposed therebetween so as to be movable in the Y1-Y2 direction shown in FIG. 2, and the edge on the Y2 side is bent. The recording button 7 is mounted on the mounting portion 20a.

The record lever 20 is provided with a spring engaging portion 20b at a portion near the end on the Y1 side. The record lever 20 has a pressing portion 20 which is located close to or in contact with the pressed portion 16d of the tape running lever 16.
c is formed. A spring 20 attached to the spring attachment portion 11c of the mechanical chassis 11 is attached to the attachment portion 20a.
d is elastically contacted with the tape driving lever 2.
0 is biased in the Y2 direction and is located at the moving end in the Y2 direction in the STOP mode.

A switch lever 21 is rotatably supported on the mechanical chassis 11 so as to overlap the tape running lever 16 and the stop lever 18.
A pressed portion 21a is formed at the end on the X2 side of No. 1, and a central portion of the pressed portion 21a is projected to form an engagement protrusion 21b. A switch operating portion 21c is formed at an end of the switch lever 21 on the X1 side and protrudes in a direction away from the mechanical chassis 11.

Switch operation section 21 of switch lever 21
One end of a lock spring 22 as a tension coil spring is attached to the base end of the switch c, whereby the switch lever 21 is urged in the R1 direction shown in FIG. Have been hit.
The spring force of the lock spring 22 is considerably smaller than the spring force of a return spring described later.

A lock member 23 is rotatably supported by the record lever 20. The lock member 23 has an engagement portion 23 which can be engaged with the lock portion 16f of the tape running lever 16.
a is formed. And the record lever 20 is Y
When the lock member 23 is moved in one direction, the engagement portion 23a is moved to the lock portion 16f by a torsion coil spring (not shown).
When the record lever 20 that has been moved in the Y1 direction is moved in the Y2 direction, the engagement between the engaging portion 23a and the lock portion 16f is released, and the record lever 20 is rotated to the original position. It is supposed to be.

The FR lever 24 functions as a switching operation section for switching between fast-forwarding and rewinding of the tape.
It is possible to move in the direction.

The FR lever 24 is the lever 1 for running the tape.
6. The mounting portion 24a is disposed so as to overlap the stop lever 18 and the record lever 20, and a bent attachment portion 24a is provided on the side edge on the Y2 side.
An R switch 9 is attached. Sliding edges 24b and 24c are formed on the Y2 side edge of the FR lever 24 adjacent to the mounting portion 24a, and the sliding edges 24b and 24c are formed.
Are inclined away from each other in the Y2 direction. The FR lever 24 has a support portion 2 at a position opposite to the sliding edges 24b and 24c with the mounting portion 24a interposed therebetween.
4d is formed.

The X1 side edge of the FR lever 24 on the Y1 side is
A spring engaging portion 24e is formed at a position closer to the side.
The FR lever 24 has a sliding contact portion 24f projecting in the Y1 direction, and the sliding contact portion 24f is formed in a substantially V shape so as to open in the Y1 direction. Also,
A working edge 24g is formed on the FR lever 24 between the mounting portion 24a and the support portion 24d, and the working edge 24g is formed in a substantially V shape so as to open in the Y2 direction.

A cam hole 25 having a predetermined shape is formed in the FR lever 24. The cam hole 25 is located between the stop engaging edge 25a located at the center and the stop engaging edge 25a.
-Rewinding engagement edges 25 located on both sides in the -X2 direction
b, a fast-forward engaging edge 25c. The engaging edge 25a for stopping includes the engaging edge 25b for rewinding and the engaging edge 2 for rapid feeding.
5c is located on the Y2 side. In the STOP mode, the lock spring 2
The engagement protrusion 21b is engaged with the stop engagement edge 25a of the cam hole 25 by the urging force of 2.

The FR lever 24 can be moved in the X1-X2 direction with reference to the center position in a state where the engagement projection 21b is engaged with the stop engagement edge 25a. The engagement projection 21b is a fast-forward engagement edge 25c.
To the first position where the engagement protrusion 21b is moved in the X2 direction, and reaches the second position where the engagement protrusion 21b is engaged with the rewind engagement edge 25b.

A held member 26 is supported between the switch lever 21 and the FR lever 24 so as to be movable in the X1-X2 directions. The held member 26 is the tape running lever 1.
A regulated edge 26a is formed at a position opposing the sixth regulating portion 16c, and the regulated edge 26a is constituted by a pair of inclined edges approaching each other in the Y1 direction. And
The held member 26 has a spring engagement portion 24 e of the FR lever 24.
, A spring engaging portion 26b is formed.

A support shaft 11d protrudes from the mechanical chassis 11, and a return spring 27 is supported on the support shaft 11d. The return spring 27 is a torsion coil spring. The support shaft 11d is inserted through the coil portion 27a, and in the STOP mode, the elastic contact portions 27b, 2b protruding from the coil portion 27a.
7c is crossed and the spring engaging portion 2 of the FR lever 24 is
4e and the spring engaging portion 26b of the held member 26.

The held member 26 can move in the X1-X2 direction with the movement of the FR lever 24. As described later, in the FF mode and the REW mode, the non-operating member moves with the movement of the FR lever 24. Moved to position.
Further, in a state where the movement of the held member 26 is restricted by the restricting portion 16c of the tape running lever 16, even if the FR lever 24 moves, it is not moved, and the CUE mode and the REVIEW mode are not performed.
In the mode, the movement is restricted at the central operation position in the movement direction.

A running stop lever 28 is provided on the mechanical chassis 11.
The traveling stop lever 28 is partially disposed between the tape traveling lever 16 and the switch lever 21. The travel stop lever 28 has a substantially inverted L-shape, and has a lock portion 28a formed at the end on the Y2 side and an affected portion 28b located opposite to the lock release portion 18b of the stop lever 18 and a Y1 side. And a spring hook 28c formed at the end. Then, the traveling stop lever 28 is partially cut out at the end on the Y1 side so that the engagement notch 2 is formed.
8d are formed.

The mechanical chassis 11 has a driving force transmission lever 2
9 is rotatably supported about the same rotation fulcrum as the capstan shaft 15, and the spring mounting portion 2 is located at a position near one end facing the lock portion 16f of the tape running lever 16.
9a is formed, and an actuated projection 29b is formed at the other end. A transmission spring 30, which is a compression coil spring, is attached to a spring attachment portion 29a of the driving force transmission lever 29. One end of the transmission spring 30 is connected to the tape running lever 1
6 is in elastic contact with the lock portion 16f.

A transmission gear 31, which is a two-stage gear, is supported at a portion near one end of the driving force transmission lever 29. The transmission gear 31 has a large diameter portion 31a and a small diameter portion 31b. The gear portion 13a of the flywheel 13 is meshed with the large diameter portion 31a of the transmission gear 31.

A substantially disk-shaped cam member 32 is rotatably disposed on the mechanical chassis 11 via a bearing member 33.
A gear portion 32a is formed on the outer periphery of the cam member 32 (see FIGS. 2 and 4). A limiter gear 34 is coaxially connected to the cam member 32 via a compression coil spring 35. Therefore, the cam member 32 and the limiter gear 34 rotate integrally or the cam member 32 rotates with respect to the limiter gear 34 due to the difference in the frictional force generated between the cam member 32 and the limiter gear 34.

A sliding cam portion 36 having an approximately oval outer diameter is formed on the outer peripheral side of the limiter gear 34 on the surface of the cam member 32 on which the limiter gear 34 is located (FIG. 1).
0 to FIG. 15). The sliding cam portion 36 is approximately three quarters thereof.
Is formed as an arc portion 36a, and the other portion is formed as a displacement portion 36b which approaches the outer periphery of the cam member 32 as the distance from the arc portion 36a increases.

The cam member 32 has a pair of projecting cam portions 37 which are circumferentially separated from each other on the surface on which the limiter gear 34 is located.
a and 37b are formed, and the protruding cam portions 37a and 37b are located on the opposite side of the displacement portion 36b of the sliding contact cam portion 36 with the rotation shaft of the cam member 32 interposed therebetween.

Between the mechanical chassis 11 and the limiter gear 34, the swing lever 3 is coaxial with the limiter gear 34.
8 is rotatably supported (see FIGS. 2 and 4).
The swing lever 38 is in elastic contact with the limiter gear 34 via the compression coil spring 35.

The swing lever 38 is formed by integrally forming a shaft portion 38a inserted into the bearing member 33 and a gear support portion 38b, and driven gears 39 and 40 are rotatable at both ends of the gear support portion 38b. It is supported by. The driven gears 39 and 40 are meshed with the limiter gear 34. A stopper piece 38c is formed on the gear support portion 38b of the swing lever 38, and the stopper piece 38c is located in a stopper hole 11e formed in the mechanical chassis 11.

A rotary lever 41 extending substantially in the Y-direction is rotatably supported on the mechanical chassis 11 coaxially with the capstan shaft 15. It is arranged between the force transmission lever 29. The end on the Y2 side of the rotating lever 41 is the supported part 4
The supported portion 41a is engaged with the support portion 24d of the FR lever 24 and is supported rotatably. A first gear 42 and a second gear 43 meshed with each other are rotatably supported at the Y1 side end of the rotating lever 41, and the first gear 42 has a gear of the flywheel 13. The portion 13a is engaged.

When the supported portion 41 a is supported by the support portion 24 d of the FR lever 24, the rotation lever 41
When the lever 24 is rotated in the X1-X2 direction and the FR lever 24 is moved in the X1 direction, the first gear 42 is engaged with the limiter gear 34 and the FR lever 24 is moved.
Is moved in the X2 direction, the second gear 43 is engaged with the limiter gear. In the STOP mode, neither the first gear 42 nor the second gear 43 is engaged with the limiter gear 34.

A pair of reel base gears 44 and 45 are disposed on both sides of the cam member 32. The reel base gear 44 located on the X1 side is rotatable in a direction corresponding to the rotation direction of the reel base gear 44. A swing lever 46 is rotatably supported. The swing lever 46 is disposed so as to extend substantially in the X direction, one end is supported by the reel base gear 44, and the other end is formed as a spring receiving portion 46a. A sliding contact portion 46 b protruding toward the center of the cam member 32 is formed at an intermediate portion of the swing lever 46. A pressing plate 47 is swingably supported on a portion of the swing lever 46 opposite to the portion where the sliding contact portion 46b in the Y direction is formed.

An urging spring 48 that is rotated in a direction corresponding to the rotation direction of the reel base gear 44 is supported on the reel base gear 45 located on the X2 side. When the 45 is rotated in a predetermined direction, one end portion elastically contacts the spring receiving portion 46a of the swing lever 46, and slides the sliding contact portion 46b of the swing lever 46 against the sliding contact cam portion 36 of the cam member 32. It plays a role.

The traveling reversing gear 4 is provided near the cam member 32.
9 and the traveling stop gear 50 are rotatably supported in a slightly separated state, and the traveling reversing gear 49 and the traveling stop gear 50
Is selectively engaged with the gear portion 32a of the cam member 32 in a predetermined state. The traveling reversing gear 49 also has a function as a regulation release member that temporarily releases regulation of movement of the traveling direction switching lever described later.

The traveling reversing gear 49 is formed by integrally forming a substantially semicircular portion and a portion protruding in the circumferential direction from an outer peripheral portion of the portion substantially opposite to the traveling stop gear 50. A gear 49a having several teeth is formed on the protruding portion. An operating shaft 49 b protruding toward the mechanical chassis 11 is formed in a substantially hemispherical portion of the traveling reversing gear 49. A substantially hemispherical portion of the traveling reversing gear 49 is provided with the pressing plate 4 supported by the swing lever 46.
A pressed portion 49c is formed at a position facing the portion 7.

The coil spring 5 is disposed between the center axis of the traveling reversing gear 49 and the spring hook 28c of the traveling stop lever 28.
2, the travel stop lever 28 is urged in the R2 direction shown in FIG. The center axis of the traveling reversing gear 49 is located in the engagement notch 28d of the traveling stop lever 28.

The traveling stop gear 50 is formed by integrally forming a substantially semicircular portion and a portion protruding in a circumferential direction from an outer peripheral portion of the portion substantially opposite to the traveling reversing gear 49. A gear 50a having several teeth is formed in the protruding portion. An operating shaft 50b is formed in a substantially hemispherical portion of the traveling stop gear 50 so as to protrude in a direction opposite to the mechanical chassis 11 side. A pressed portion 50c is formed in a substantially hemispherical portion of the traveling stop gear 50 at a position facing the pressing plate 47 supported by the swing lever 46.

The traveling stop gear 50 and the traveling reversing gear 49
A coil spring 52 is stretched between the gears 49a and 50b, whereby the traveling reversing gear 49 and the traveling stop gear 50 are urged in a direction in which the gears 49a and 50a are separated from each other. In the STOP mode, the gears 49a and 50a Are both cam members 3
The second gear portion 32a is not engaged.

An intermediate lever 53 is rotatably supported by the mechanical chassis 11, and one end of the intermediate lever 53 is rotatably connected to one end of a running direction switching lever 54.

The traveling direction switching lever 54 extends substantially in the X direction, and is supported by the mechanical chassis 11 so as to be movable in the X1-X2 directions. The traveling direction switching lever 54 is formed with a switch piece 54a protruding on the opposite side to the mechanical chassis 11 and an actuated portion 54b located opposite to the acting shaft 49b of the traveling reversing gear 49.

The switch piece 54 of the traveling direction switching lever 54
A changeover switch 55 is disposed in the vicinity of a (see FIG. 7), and when the changeover switch 55 is operated by the switch piece 54a, the tape is driven to reverse.

The movement restricting lever 56 is provided on the mechanical chassis 11.
Is rotatably supported coaxially with the traveling stop gear 50. A first regulating edge 56a and a second regulating edge 56b are formed at one end of the movement regulating lever 56 at a distance from each other in the X direction, and a spring engaging portion 56c is formed at the other end.
Then, the rotation shaft of the movement restricting lever 56 is inserted into the coil portion 57a of the torsion coil spring 57, and in the STOP mode, an elastic contact portion 57b projected from the coil portion 57a,
57c, the spring engaging portion 20b of the record lever 20 and the spring engaging portion 56c of the movement restricting lever 56 are connected.
And sandwiched.

A head switching lever 58 is supported on the surface of the mechanical chassis 11 opposite to the side on which the above-mentioned levers and the like are arranged so as to be movable in the X1-X2 directions shown in FIG. The head switching lever 58 extends in the X1-X2 direction, and has a mounting portion 58a formed at one end thereof.
The direction switch 10 is attached to 8a.

The head switching lever 58 is formed with regulating projections 58b and 58c which are spaced apart in the X1-X2 direction and project to the opposite side of the mechanical chassis 11. A connection hole 58d is formed in the head switching lever 58.
The other end of the intermediate lever 53 is rotatably engaged with 8d, and the intermediate lever 53 and the head switching lever 58 are connected.

Accordingly, when the head switching lever 58 is moved in the X1 direction, the traveling direction switching lever 54 is moved in the X2 direction via the intermediate lever 53, and the head switching lever 58 is moved.
Is moved in the X2 direction, the traveling direction switching lever 54 is moved in the X1 direction via the intermediate lever 53, and the switch piece 5 is moved.
4a operates the changeover switch 55.
The moving end of the head switching lever 58 in the X1 direction and the moving end of the X2 direction in the moving direction are respectively a first restricting position and a second restricting position for restricting the movement of a first base or a second base described later. Position.

A first base 59 and a second base 60 are arranged so as to be rotatable about a rotation fulcrum 16h formed on the tape running lever 16 so as to overlap the head switching lever 58. ing. The first base 59 and the second base 60 have escape recesses 59 respectively.
a and 60a are formed.

A torsion coil spring 61 is interposed between the first base 59 and the second base 60, whereby the first base 59 is moved in the direction R1 shown in FIG. Numeral 60 is urged in the R2 direction shown in FIG. Then, a first magnetic head 62 and a second magnetic head 63 are attached to the first base 59 and the second base 60, respectively.

The second base 60 has a support member 64 of X2
A pinch roller 65 is rotatably supported on the support member 64 by using the end on the side as a fulcrum. A torsion coil spring 64a is interposed between the support member 64 and the spring engaging portion 16e of the tape running lever 16 (see FIG. 16), and the torsion coil spring is twisted when the second base 60 is moved in the Y1 direction. The pinch roller 65 is pressed against the capstan shaft 15 by the action of the torsion coil spring 64a. An actuated piece 64b is formed on the second base.
4 is engaged with the working edge 24g.

The cassette mounting section 3 of the cassette tape recorder 1 is provided with a pair of reel bases 66 and 67 which are rotated with the rotation of the reel base gears 44 and 45 (see FIG. 1). Positioning pins 68, 68 for positioning the tape cassette 5 are provided in the cassette mounting section 3.
(See FIG. 1).

Hereinafter, each operation of the cassette tape recorder 1 will be described.

First, a case where the NOR mode is set from the STOP mode will be described (see FIGS. 6 and 7).

In the STOP mode, when the tape running lever 16 is operated in the Y1 direction shown in FIG. 6 in a state where the head switching lever 58 is at the first restricting position which is a position on the X1 direction side, the pressing piece 16g is used. Switch lever 2
One pressed portion 21a is pressed in the Y1 direction, and a drive switch (not shown) is operated by the switch operation portion 21c, so that the drive motor 12 is rotated. And the drive motor 1
2 is transmitted to the flywheel 13 via the belt 14, and the transmission gear 31 is rotated via the gear portion 13a. In the STOP mode, since the FR lever 24 is at the center position, the first lever
The gear 42 and the second gear 43 are not meshed with the limiter gear 34.

When the tape traveling lever 16 is moved in the Y1 direction, the locked portion 16b is moved to the traveling stop lever 2 position.
8, the travel stop lever 28 is slightly rotated in the R1 direction, and the tape travel lever 16
Is moved in the Y1 direction, the travel stop lever 28 that has been slightly rotated in the R1 direction is rotated in the R2 direction by the action of the coil spring 51, and the locked portion 16b is locked by the lock portion 28a.

At the same time, when the tape running lever 16 is moved in the Y1 direction, the driving force transmission lever 29 connected via the transmission spring 30 elastically contacting the lock portion 16f is rotated, and the driving force transmission lever 29 is rotated. Transmission gear 3 supported by
One small diameter portion 31b is meshed with the cam gear 32a of the cam member 32. The driven gears 39, 4 supported by the swing lever 38 via the transmission gear 31, the cam member 32, and the limiter gear 34 rotated by the rotation of the gear portion 13a.
0 is rotated. Also, the bearing member 33 is rotated with the rotation of the cam gear 32.

At this time, the limiter gear 34 is
2 is rotated in the R1 direction shown in FIG.
Since the bearing member 33 is in elastic contact with the swing lever 38 via the compression coil spring 35, the swing piece 38 is connected to the stopper hole 11 e of the mechanical chassis 11 by the stopper piece 38 c.
Is rotated in the R1 direction to a position regulated by the edge of the. When the swing lever 38 is rotated in the R1 direction, the driven gear 39 meshes with the reel base gear 44 and the reel base 66
Is rotated.

In the state where the head switching lever 58 is in the first restricting position which is the position on the X1 direction side, the traveling direction switching lever 54 is moved in the X2 direction via the intermediate lever 53 as described above. Switch 5
The operation to 5 has not been performed. When the tape running lever 16 is operated in the Y1 direction while the head switching lever 58 is at the first regulating position, the first base 59 and the second base 60 are moved with the movement of the tape running lever 16. Is moved in the Y1 direction (see FIG. 7). Then, with the movement of the second base 60, the pinch roller 65 is moved to Y1.
, And pressed against the capstan shaft 15 via a tape.

When the first base 59 and the second base 60 are moved in the Y1 direction, the head switching lever 58
Is in the first regulating position, one side edge of the first base 59 contacts the regulating protrusion 58 b of the head switching lever 58. On the other hand, the second base 60 has the restriction protrusion 58c located in the clearance recess 60a, so that the torsion coil spring 61
The second magnetic head 63 is rotated in the R2 direction about the rotation fulcrum 16h by the spring force of the above, and the second magnetic head 63 contacts the tape.

As described above, the driven gear 39 is engaged with the reel base gear 44, and the second magnetic head 63 is brought into contact with the tape, so that the NOR mode is set (see FIGS. 6 and 7). Then, the tape is sent out by the pinch roller 65 and the capstan shaft 15, and is wound up by the reel base 66.

To end the operation of reproducing the signal recorded on the tape, the stop lever 18 is operated in the Y1 direction. When the stop lever 18 is operated in the Y1 direction, the operated portion 2 of the travel stop lever 28 is actuated by the lock release portion 18b.
8b is pressed, and the travel stop lever 28 is rotated in the R1 direction. Therefore, the lock of the tape running lever 16 is released, and the tape running lever 16 is moved in the Y2 direction by the action of the spring 17 to return to the original position before the operation,
When the switch lever 21 is moved by the action of the lock spring 22
It is moved in two directions and returns to the original position, and the switch operation unit 2
1c is released from the operation of the drive switch and the drive motor 12
Is stopped.

Further, with the movement of the tape running lever 16 in the Y2 direction, the driving force transmission lever 29 also returns to the original position, and the engagement between the transmission gear 31 and the cam member 32 is released.
The rotation of the reel base 66 is stopped. Further, the second magnetic head 63 and the pinch roller 65 also return to their original positions. Therefore, the STOP mode is set again. When the operation on the stop lever 18 is released, the stop lever 18 returns to the original position before the operation by the action of the spring 19.

In the setting from the REV mode to the STOP mode, which will be described later, the stop lever 18 is set to Y in the same manner as described above.
This is done by operating in one direction. Also, as described later, in the state where the REC mode is set,
The record lever 20 is locked by the travel stop lever 28 via the tape travel lever 16.
The setting of the STOP mode from the C mode (N-REC mode and R-REC mode) is also performed by operating the stop lever 18 in the Y1 direction in the same manner as described above.

Next, a case where the REV mode is set from the STOP mode will be described (see FIGS. 8 and 9).

When the head switching lever 58 is in the first restriction position, which is the position on the X1 direction side, the head switching lever 58 is operated in the X2 direction to move to the second restriction position. When the head switching lever 58 is moved to the second restriction position, the traveling direction switching lever 54 is moved in the X1 direction via the intermediate lever 53, and the switch piece 54a operates the switching switch 55. Accordingly, the drive motor 12 is rotatable in a direction opposite to the rotation direction in the NOR mode, and the tape is allowed to run in reverse.

When the head switching lever 58 is in the second regulating position, the tape running lever 16 is moved to Y1 shown in FIG.
When operated in the direction, the drive motor 12 is rotated by operating a drive switch (not shown) by the switch operation unit 21c as in the STOP mode. The rotation of the drive motor 12 is in the opposite direction to that in the STOP mode, as described above. Then, the driving force of the drive motor 12 is transmitted to the transmission gear 31. In the NOR mode, the first gear 42 and the second gear 43 supported by the rotation lever 41 are not meshed with the limiter gear 34 because the FR lever 24 is at the center position.

When the tape running lever 16 is moved in the Y1 direction, the tape running lever 16 is locked to the running stop lever 28 as in the STOP mode. Further, the cam member 32, the limiter gear 34, and the driven gears 39 and 40 are rotated via the transmission gear 31.

At this time, the limiter gear 34 is
2 is rotated in the R2 direction shown in FIG.
The swing lever 38 is the stopper piece 38c is the mechanical chassis 1.
R2 up to the position regulated by the edge of the first stopper hole 11e.
It is turned in the direction. When the swing lever 38 is rotated in the R2 direction, the driven gear 40 meshes with the reel base gear 45, and the reel base 67 is rotated.

When the tape running lever 16 is operated in the Y2 direction, the first base 59 and the second base 60 are moved in the Y1 direction with the movement of the tape running lever 16 (see FIG. 9). ), The pinch roller 65 is moved in the Y1 direction with the movement of the second base 60, and is pressed against the capstan shaft 15 via the tape.

When the first base 59 and the second base 60 are moved in the Y1 direction, the head switching lever 58
Is located at the second restriction position, one side edge of the second base 60 contacts the restriction protrusion 58 c of the head switching lever 58. On the other hand, the first base 59 has the restricting projection 58b located in the escape recess 59a, so that the torsion coil spring 61
The first magnetic head 62 is rotated in the R1 direction about the rotation fulcrum 16h by the spring force of the first magnetic head 62 and comes into contact with the tape.

As described above, the driven gear 40 is engaged with the reel base gear 45, and the first magnetic head 62 is brought into contact with the tape, whereby the REV mode is set (see FIGS. 8 and 9). Then, the tape is sent out by the pinch roller 65 and the capstan shaft 15, and is wound up by the reel base 66.

As described above, in the cassette tape recorder 1, switching between the first magnetic head 62 and the second magnetic head 63 is performed by turning the first base 59 or the second base 60 one time. This is performed by selectively rotating around the pivot 16h.

Therefore, the operation of one base 59 (60) is not restricted by the other base 60 (59).
Good positional accuracy of each of the magnetic heads 62 and 63 can be ensured. Also, since there is only one rotation fulcrum 16h, the number of parts is small, and in addition, since the space for the first base 59 and the second base 60 to rotate is small, interference with other members is avoided. The degree of freedom of design is improved.

Next, the auto-reverse operation (switching operation from the NOR mode to the REV mode or the switching operation from the N-REC mode to the R-REC mode) and the shut-off operation (REV mode or R-REC mode) of the cassette tape recorder 1 are performed.
The automatic stop operation in the REC mode will be described (FIG. 1).
0 to FIG. 15).

When the NOR mode is set, both the cam member 32 and the reel base gear 44 are set to R1.
(See FIG. 10). Reel base gear 4
The swing lever 46 is urged in the R1 direction with the rotation of the slide lever 4 in the R1 direction, and the sliding contact portion 46b is in sliding contact with the sliding contact cam portion 36 of the cam member 32. Therefore, the swing lever 46 is
When the sliding contact portion 46b is in contact with the portion of the displacement portion 36b of the sliding contact cam portion 36 that is farthest from the center of rotation, the projecting cam portion 37a or the projecting cam portion 37b is in an engagement ready position where it can be engaged. When the sliding contact portion 46b is in contact with a portion of the displacement portion 36b of the sliding contact cam portion 36 other than the portion farthest from the rotation center or the arc portion 36a, the projecting cam portion 37
a and the protruding cam portion 37b is in a non-engagement position where it cannot be engaged. At this time, the pressing plate 47 supported by the swing lever 46
Are not in contact with the pressed portion 49c of the running reversing gear 49 and the pressed portion 50c of the running stop gear 50.

When the tape reaches the end and stops running,
The rotation of the reel base gear 44 is stopped, and the rotation of the limiter gear 34 is also stopped. When the rotation of the reel base gear 44 stops, the urging of the swing lever 46 in the R1 direction is released. At this time, since the tape running lever 16 remains operated, the drive motor 12 is not stopped, and the cam member 32 continues to rotate in the R1 direction with respect to the limiter gear 34.

When the cam member 32 is rotated to a predetermined position, the sliding portion 46b of the swing lever 46 is brought into sliding contact with the displacement portion 36b of the sliding cam portion 36. Since the urging of the swing lever 46 in the R1 direction is released when the cam member 32 is continuously rotated, the sliding contact portion 46b is left at the engagement preparation position where the sliding contact portion 46b is in sliding contact with the displacement portion 36b. And is engaged with the protruding cam portion 37b (see FIG. 11).

When the sliding contact portion 46b is engaged with the protruding cam portion 37b and the cam member 32 is further rotated, the swing lever 46 is rotated in the R2 direction by the action of the protruding cam portion 37b, and the traveling stop lever is turned. The pressing plate 47 presses the pressed portion 49c of the running reversing gear 49 and the pressed portion 50c of the running stop gear 50. Accordingly, the traveling reversing gear 49 is rotated in the R2 direction and the traveling stop gear 50 is rotated in the R1 direction, and the tips of the gear 49a and the gear 50a contact the gear portion 32a of the cam member 32 (see FIG. 12). .

The gear 49a and the gear 50a are connected to the cam member 32.
At this time, the cam member 32 is rotated in the R1 direction, and meshes only with the gear 49a that can mesh with the gear portion 32a. Therefore, the traveling reversing gear 49 is further rotated in the R2 direction, but the traveling stopping gear 50 is moved in the R2 direction by the action of the coil spring 52 stretched between the traveling reversing gear 49 and the traveling stopping gear 50. When rotated, the gear 50a is separated from the gear portion 32a of the cam member 32 (see FIG. 13). And the traveling reversing gear 4
9 rotates in the R2 direction, the operating shaft 49b presses the operated portion 54b of the traveling direction switching lever 54 in the X1 direction, the traveling direction switching lever 54 is moved in the X1 direction, and the switch piece 54a switches the switching switch 55. Manipulate. At this time, the head switching lever 58 is
Is moved in the X2 direction via the intermediate lever 53 to reach the second restriction position.

The changeover switch 5 is set by the switch piece 54a.
5 is operated, the rotation of the drive motor 12 is reversed,
The cam member 32 is rotated in the R2 direction and the running reversing gear 49 is rotated.
Is rotated in the R1 direction to release the engagement with the gear portion 32a (see FIG. 14). Then, the swing lever 38 is rotated in the R2 direction according to the rotation direction of the cam member 32, the driven gear 40 and the reel base gear 45 mesh with each other, and the reel base gear 45 is also rotated in the R2 direction. Reel base gear 4
The biasing spring 48 supported by 5 is rotated in the R2 direction.

As described above, the auto-reverse operation is performed, the REV mode is set, and the tape runs reversely.

The spring receiving portion 46a of the swing lever 46 is pressed by the biasing spring 48 rotated in the R2 direction, and the swing lever 46 is urged again in the R1 direction. Accordingly, the sliding contact portion 46b of the swing lever 46 comes into sliding contact with the sliding contact cam portion 36 of the cam member 32 again (see FIG. 14).

When the tape reaches the end and stops running in the REV mode, the rotation of the reel base gear 45 is stopped and the rotation of the limiter gear 34 is also stopped. Then, when the rotation of the reel base gear 44 stops, the urging of the swing lever 46 in the R1 direction by the urging spring 48 is released. At this time, since the tape running lever 16 remains operated, the drive motor 12 is not stopped, and the cam member 32 continues to rotate in the R2 direction with respect to the limiter gear 34.

When the cam member 32 is rotated to a predetermined position, the sliding portion 46b of the swing lever 46 comes into sliding contact with the displacement portion 36b of the sliding cam portion 36. Since the urging of the swing lever 46 in the R1 direction is released when the cam member 32 is continuously rotated, the sliding contact portion 46b is left at the engagement preparation position where the sliding contact portion 46b is in sliding contact with the displacement portion 36b. And is engaged with the protruding cam portion 37a.

When the sliding contact portion 46b is engaged with the protruding cam portion 37a and the cam member 32 is further rotated, the swing lever 46 is rotated in the R2 direction to reach the operating position, and the pressing plate 47 is turned. The pressed portion 49c of the driving gear 49 and the pressed portion 50c of the traveling stop gear 50 are pressed. Therefore,
The traveling reversing gear 49 is rotated in the R2 direction and the traveling stop gear 50 is rotated in the R1 direction, and the tips of the gear 49a and the gear 50a contact the gear portion 32a of the cam member 32 (see FIG. 15).

The gear 49a and the gear 50a are
At this time, the cam member 32 is rotated in the R2 direction, and meshes only with the gear 50a that can mesh with the gear portion 32a. Accordingly, the traveling stop gear 50 is further rotated in the R1 direction, but the traveling reversing gear 49 is moved in the R1 direction by the action of the coil spring 52 stretched between the traveling reversing gear 49 and the traveling stop gear 50. When rotated, the gear 49a is separated from the gear portion 32a of the cam member 32. The rotation of the travel stop gear 50 in the R1 direction causes the operating shaft 50b to press the tip of the travel stop lever 28, and the travel stop lever 28 is rotated in the R1 direction, thereby locking the lock portion 28a and the tape travel lever. 16 is disengaged from the locked portion 16b. Therefore, the tape running lever 16 returns to the original position before the operation by the action of the spring 17.

As described above, the shut-off operation is performed, the STOP mode is set, and the running of the tape is stopped.

The auto-reverse operation in which the R-REC mode is set from the N-REC mode is the same as described above, except that the record lever 20 is operated together with the tape running lever 16. Done. Also, regarding the shut-off operation in which the STOP mode is set from the R-REC mode, the record lever 20 is moved in the R-REC mode by the tape running lever 16
The operation is performed in the same manner as described above, with the only difference being that they are operated together with.

As described above, in the cassette tape recorder 1, since the mode switching operation is performed by changing the position of the swing lever 46, the switching mechanism does not have a complicated structure. A reliable operation state can be ensured with a small number of parts.

Also, when the tape is reversed,
The swing lever 46 is urged by the urging spring 48 in a direction in which the sliding contact portion 46b approaches the sliding contact cam portion 36 of the cam member 32, so that the operation at the time of reverse running of the tape and the operation at the time of shut-off are properly performed. Done. Further, since the biasing spring 48 is rotated with the rotation of the reel base gear 45, a proper operation state during the reverse running of the tape can be ensured.

In addition, in the cassette tape recorder 1, when the swing lever 46 is rotated to the above-described operating position, the cam member 32 is rotated in accordance with the rotation direction of the cam member 32.
Reversing gear 4 selectively meshed with the gear portion 32a
9 and the running stop gear 50, the automatic switching of the running direction of the tape and the automatic stop of the running of the tape are performed.
Properly done with a small number of parts.

The above description includes switching of the running direction of the tape,
That is, from the NOR mode to the setting of the REV mode or the N-R
The case where the setting of the R-REC mode from the EC mode is automatically performed when the tape reaches the end has been described. However, in the cassette tape recorder 1, the NOR mode is set by manually operating the traveling direction switching lever 54. And the REV mode.

As described above, the manual switching between the NOR mode and the REV mode is performed by operating the traveling direction switching lever 54 in the X1 direction in the NOR mode.
The EV mode is set (see FIG. 8), and the NOR mode is set by operating the traveling direction switching lever 54 in the X2 direction in the REV mode (see FIG. 6).

Therefore, in the cassette tape recorder 1, as described above, the proper switching operation between the first magnetic head 62 and the second magnetic head 63 is performed, and the automatic reverse operation is performed. Thus, the running direction of the tape can be switched and the running direction of the tape can be switched manually, thereby improving usability and operability.

In the cassette tape recorder 1, as described above, the switching between the NOR mode and the REV mode can be manually performed. However, in the REC mode, the switching between the N-REC mode and the R-REC mode is performed. The mutual switching cannot be performed manually.

Hereinafter, a mechanism for preventing manual switching between the N-REC mode and the R-REC mode will be described (see FIGS. 16 to 20).

First, the setting of the STOP mode to the N-REC mode will be described (see FIGS. 16 and 17).

In the STOP mode, when the record lever 20 is operated in the Y1 direction while the head switching lever 58 is at the first restricting position which is the position on the X1 direction side, the pressing portion 20c is pressed by the tape running lever 16. Pressing part 16d
, And the tape running lever 16 is moved in the Y1 direction as the record lever 20 moves. When the tape traveling lever 16 is moved to a predetermined position, as described above, the tape traveling lever 1
6 is locked by the travel stop lever 28.

When the record lever 20 is simultaneously moved in the Y1 direction, the lock member 23 is rotated in the R2 direction by the action of a torsion coil spring (not shown), and
3a is engaged and locked with the lock portion 16f of the tape running lever 16 (see FIG. 16). Therefore, the record lever 20 is connected to the tape running lever 16 and the lock member 2.
3 to the travel stop lever 28, whereby the N-REC mode is set.

When the record lever 20 is moved in the Y1 direction and locked, the spring engagement portion 20b of the record lever 20 is elastically contacted with the torsion coil spring 57 engaged with the spring engagement portion 20b. 57b is displaced in the Y1 direction. The movement restricting lever 56 with which the elastic contact portion 57c is engaged by the action of the torsion coil spring 57
It is rotated in two directions, and the second regulating edge 56b of the movement regulating lever 56 is engaged with the operated portion 54b of the traveling direction switching lever 54 (see FIG. 17). Therefore, the movement direction switching lever 54 is restricted from moving in the X1-X2 direction, and the N-REC
Even if the user attempts to manually operate the head switching lever 58 in the mode, the head switching lever 58 connected to the traveling direction switching lever 54 via the intermediate lever 53 cannot be operated.

In the auto-reverse operation, the running direction switching lever 54 needs to move in the X1 direction when the tape reaches the end in order to switch the running direction of the tape. When the tape reaches the end in the NOR mode and the N-REC mode, the running reversing gear 49 is rotated in the R2 direction. In the slave mode, the rotation of the traveling reversing gear 49 causes the action shaft 49b to press the side edge of the movement restricting lever 56 so that the movement restricting lever 56 rotates in the R1 direction. The engagement between the regulating edge 56b and the operated portion 54b is released, and the traveling direction switching lever 54 is made movable in the X1 direction (see FIG. 18). When the traveling direction switching lever 54 is moved in the X1 direction and the switch piece 54a operates the switching lever 55, the rotation direction of the drive motor 12 is reversed, and the cam member 32 and the reel base gear 45 are rotated in the R2 direction, and -REC mode is set (FIG. 19)
reference).

In the R-REC mode, the traveling reversing gear 49 is rotated in the R1 direction and returned to the state before being rotated in the R2 direction. Has been released. And
The movement restricting lever 56 is again rotated in the R2 direction by the action of the torsion coil spring 57. At this time, since the traveling direction switching lever 54 has been moved in the X1 direction, the first regulating edge 56a is moved to the traveling direction switching lever 54. (See FIGS. 19 and 20).

Therefore, the traveling direction switching lever 54 is set to X1-
When movement in the X2 direction is restricted and the user tries to manually operate the head switching lever 58 in the R-REC mode,
The head switching lever 58 connected to the traveling direction switching lever 54 via the intermediate lever 53 cannot be operated.

As described above, in the cassette tape recorder 1, the movement of the traveling direction switching lever 54 is restricted by the movement restricting lever 56 which is operated in conjunction with the operation of the record lever 20, and the manual operation in the REC mode is performed. , The switching operation of the running direction of the tape is not possible, the number of parts is very small, the mechanism can be simplified, and good assemblability during manufacturing can be ensured.

Further, when the tape reaches the end, the regulation of the traveling direction switching lever 54 by the movement regulating lever 56 is temporarily released, which may hinder the auto reverse operation of automatically switching the traveling direction of the tape. Absent.

Further, an action shaft 49b for releasing the restriction on the traveling direction switching lever 54 of the movement restricting lever 56 is formed on the traveling reversing gear 49 for moving the traveling direction switching lever 54 in the X1 direction in the auto reverse operation. Therefore, the traveling reversing gear 49 has two functions, that is, the function of moving the traveling direction switching lever 54 and the function of releasing the restriction of the movement restricting lever 56, and a member having each function is separately provided. There is no need, and the mechanism can be further simplified by reducing the number of parts.

Next, the CUE mode and the REVIEW mode will be described (see FIGS. 22 and 23).

As described above, in the STOP mode, the FR lever 24 is located at the center position, so that the rotating lever 41 is located substantially at the center in the rotating direction, and both the first gear 42 and the second gear 43 It is not meshed with the limiter gear 34 (see FIG. 21). In the STOP mode, the spring engaging portion 26b of the held member 26 is positioned close to the spring engaging portion 24e of the FR lever 24 at the center position in the Y direction.
The spring engagement portion 24e and the spring engagement portion 26b are sandwiched in a state where b and 27c are crossed (see FIG. 21).

From STOP mode to NOR mode or RE mode
When the V mode is set, the FR lever 24
And the held member 26 are not moved, so the return spring 2
In the state where the elastic contact portions 27b and 27c are crossed, the above-described state in which the spring engaging portion 24e and the spring engaging portion 26b are sandwiched is maintained (see FIGS. 6 and 8). In the NOR mode and the REV mode, the regulating portion 16c of the tape running lever 16 is
a, whereby the movement of the held member 26 in the X1-X2 direction is restricted (see FIGS. 6 and 8). Further, in the NOR mode and the REV mode, the operating piece 64b of the support member 64 is connected to the operating edge 24 of the FR lever 24.
g (see FIGS. 6 and 8).

In the NOR mode, when the FR lever 24 is moved in the X1 direction, the CUE mode is set (see FIG. 22). In the NOR mode, the transmission gear 3
The first small diameter portion 31b and the gear portion 32a of the cam member 32 mesh with each other, and the driven gear 39 and the reel base gear 44 mesh with each other, and the reel base gear 44 is rotated in the R1 direction (see FIG. 6). .

In the NOR mode, when the FR lever 24
When moved in one direction, the supported portion 41 of the rotating lever 41
a is engaged with the support portion 24d,
Is rotated in the R1 direction, and the first gear 42 is engaged with the limiter gear 34 (see FIG. 22). At the same time FR lever 2
4 is moved in the Y1 direction by the movement of the sliding contact action portion 24f accompanying the movement of the driving force transmission lever 2
9 is rotated in the R1 direction, and the small diameter portion 31b of the transmission gear 31 is rotated.
And the gear portion 32a of the cam member 32 is disengaged.
In the state where the first gear 42 is engaged with the limiter gear 34, the rotation direction of the limiter gear 34 is not changed due to the number of gears from the gear portion 13a of the flywheel 13 to the limiter gear 34. The meshing state with the reel base gear 44 is maintained.

Further, as the FR lever 24 moves in the X1 direction, the operating piece 64b of the support member 64 moves
g, the support member 64 is rotated in the R1 direction, and the pinch roller 65 is separated from the capstan shaft 15.

As described above, the first gear 42 meshes with the limiter gear 34, and the transmission gear 31 and the cam member 3
2 is released, and the pinch roller 65 is separated from the capstan shaft 15, whereby the CUE mode during forward running is set (see FIG. 22). And
In the CUE mode, the reel base gear 44 is rotated at a high speed due to the relationship between the gear ratios, and a so-called CUE operation, which is a fast-forward operation in a reproduction state in forward running, is performed.

Further, in the CUE mode, the FR lever 24 is moved in the X1 direction and is at the first position, but the held member 26 is restricted by the restricting portion 16c of the tape running lever 16 and is in the operating position. The elastic contact portion 27b of the return spring 27 is displaced in the X1 direction along with the movement of the spring engaging portion 24e, whereby the FR lever 24 is urged in the X2 direction (see FIG. 22). Accordingly, when the operation of the FR lever 24 is released, the FR lever 24 is moved in the X2 direction by the spring force of the return spring 27, returns to the center position, and the NOR mode is set again (see FIG. 6). In addition, FR
When the lever 24 returns to the center position, the support member 64
Is returned in the R1 direction by the action of the torsion coil spring 64a, and the pinch roller 65 is pressed against the capstan shaft 15.

In the NOR mode, when the FR lever 24 is moved in the X2 direction, the REVIEW mode is set (see FIG. 23).

In the NOR mode, when the FR lever 24
When moved in two directions, the rotation lever 41 is rotated in the R2 direction, and the second gear 43 is engaged with the limiter gear 34 (see FIG. 23). At the same time, the driving force transmission lever 29 is moved by the movement of the sliding contact portion 24f accompanying the movement of the FR lever 24.
Is rotated in the R1 direction, and the engagement between the small diameter portion 31b of the transmission gear 31 and the gear portion 32a of the cam member 32 is released. When the second gear 43 is engaged with the limiter gear 34, the rotation direction of the limiter gear 34 is changed due to the number of gears from the gear portion 13a of the flywheel 13 to the limiter gear 34, and the swing lever 38 Is rotated in the R2 direction, and the driven gear 39 and the reel base gear 44 are rotated.
And the driven gear 40 and the reel base gear 45 are meshed with each other.

Further, as the FR lever 24 moves in the X2 direction, the operating piece 64b of the support member 64 is moved to the working edge 24b.
g, the support member 64 is rotated in the R1 direction, and the pinch roller 65 is separated from the capstan shaft 15.

As described above, the second gear 43 is engaged with the limiter gear 34, and the transmission gear 31 and the cam member 3 are engaged.
And the driven gear 40 and the reel base gear 4 are disengaged from each other.
5 are engaged with each other, and the pinch roller 65 is separated from the capstan shaft 15, whereby a REVIEW mode during forward running is set (see FIG. 23). Then, in the REVIEW mode, the reel base gear 45 is rotated at a high speed due to the relationship between the respective gear ratios, and a so-called REVIEW operation, which is a rewind operation in a reproduction state in forward running, is performed.

In the REVIEW mode, FR
The lever 24 is moved in the X2 direction and is at the second position,
The held member 26 is the regulating portion 16 of the tape running lever 16.
c, the movement of the return spring 27 is restricted.
The elastic contact portion 27c is moved to X2 with the movement of the spring engagement portion 24e.
The FR lever 24 is urged in the X1 direction (see FIG. 23). Therefore, the FR lever 24
Is released, the FR lever 24 is moved in the X1 direction by the spring force of the return spring 27, returns to the center position, and the NOR mode is set again (see FIG. 6).
When the FR lever 24 returns to the center position, the pinch roller 65 is pressed against the capstan shaft 15.

Next, setting of the CUE mode or the REVIEW mode from the REV mode will be described (FIG. 2).
4 and FIG. 25).

When the FR lever 24 is moved in the X1 direction in the REV mode, the CUE mode is set (see FIG. 24). In the REV mode, the transmission gear 3
The first small diameter portion 31b and the gear portion 32a of the cam member 32 mesh with each other, and the driven gear 40 and the reel base gear 45 mesh with each other, and the reel base gear 45 is rotated in the R2 direction (see FIG. 8). .

In the REV mode, when the FR lever 24
When moved in one direction, the rotating lever 41 is rotated in the R1 direction, and the first gear 42 is engaged with the limiter gear 34 (see FIG. 24). At the same time, the driving force transmission lever 29 is moved by the movement of the sliding contact portion 24f accompanying the movement of the FR lever 24.
Is rotated in the R1 direction, and the engagement between the small diameter portion 31b of the transmission gear 31 and the gear portion 32a of the cam member 32 is released. When the first gear 42 is meshed with the limiter gear 34, the rotation direction of the limiter gear 34 is not changed due to the number of gears from the gear portion 13a of the flywheel 13 to the limiter gear 34. The meshing state with the reel base gear 45 is maintained.

Further, as the FR lever 24 moves in the X1 direction, the operating piece 64b of the support member 64 moves
g, the support member 64 is rotated in the R1 direction, and the pinch roller 65 is separated from the capstan shaft 15.

As described above, the first gear 42 meshes with the limiter gear 34, and the transmission gear 31 and the cam member 3
2 is released, and the pinch roller 65 is separated from the capstan shaft 15, whereby the CUE mode at the time of reverse running is set (see FIG. 24). And
In the CUE mode, the reel base gear 45 is rotated at a high speed due to the relationship between the gear ratios, and a so-called CUE operation, which is a fast-forward operation in a reproduction state in reverse running, is performed.

In the CUE mode, the FR lever 24 is moved in the X1 direction and is at the first position. However, the held member 26 is restricted by the restricting portion 16c of the tape running lever 16 and is in the operating position. The elastic contact portion 27b of the return spring 27 is displaced in the X1 direction along with the movement of the spring engaging portion 24e, whereby the FR lever 24 is urged in the X2 direction (see FIG. 24). Accordingly, when the operation of the FR lever 24 is released, the FR lever 24 is moved in the X2 direction by the spring force of the return spring 27, returns to the center position, and the REV mode is set again (see FIG. 8). In addition, FR
When the lever 24 returns to the center position, the pinch roller 65 is pressed against the capstan shaft 15.

In the REV mode, when the FR lever 24 is moved in the X2 direction, the REVIEW mode is set (see FIG. 25).

In the REV mode, when the FR lever 24
When moved in two directions, the rotating lever 41 is rotated in the R2 direction, and the second gear 43 is engaged with the limiter gear 34 (see FIG. 25). At the same time, the driving force transmission lever 29 is moved by the movement of the sliding contact portion 24f accompanying the movement of the FR lever 24.
Is rotated in the R1 direction, and the engagement between the small diameter portion 31b of the transmission gear 31 and the gear portion 32a of the cam member 32 is released. When the second gear 43 is engaged with the limiter gear 34, the rotation direction of the limiter gear 34 is changed due to the number of gears from the gear portion 13a of the flywheel 13 to the limiter gear 34, and the swing lever 38 Is rotated in the R1 direction, and the driven gear 40 and the reel base gear 45 are rotated.
And the driven gear 39 and the reel base gear 44 are meshed with each other.

Further, as the FR lever 24 moves in the X2 direction, the operating piece 64b of the support member 64 is moved to the working edge 24b.
g, the support member 64 is rotated in the R1 direction, and the pinch roller 65 is separated from the capstan shaft 15.

As described above, the second gear 43 is engaged with the limiter gear 34, and the transmission gear 31 and the cam member 3 are engaged.
2 and the driven gear 39 and the reel base gear 4 are disengaged.
4 are engaged with each other, and the pinch roller 65 is separated from the capstan shaft 15, whereby the REVIEW mode during reverse running is set (see FIG. 25).

As described above, in the cassette tape recorder 1, when the FR lever 24 is moved in the X1 direction, the CUE mode is set regardless of the NOR mode or the REV mode. The tape is run at a high speed in the same direction as the tape runs in the NOR mode or the REV mode.
If the operation is performed in the direction
The REVIEW mode is set regardless of the EV mode, and the tape is run at a high speed in the direction opposite to the running direction of the tape in the NOR mode or the REV mode.

Therefore, when it is desired to fast-forward the tape, F
The operator must always move the R lever 24 in the X1 direction and always move the FR lever 24 in the X2 direction to rewind the tape. Therefore, the operator must check the current mode each time. In addition, the usability is improved and erroneous operation can be prevented.

The mechanism for improving the usability is composed of the FR lever 24, a rotating lever 41 which is rotated in a direction corresponding to the operation direction of the FR lever 24, and a supporting mechanism supported by the rotating lever 41. The first gear 42 and the second gear 43 are selectively meshed with the first gear 42 and the second gear 43 by the rotation of the rotation lever 41.
4 and a swing lever 38 which is rotated in a direction corresponding to the rotation direction of the limiter gear 34, and is not formed as a specially complicated mechanism. There is no such thing as increasing.

Next, the setting of the FF mode and the REW mode will be described (see FIGS. 26 to 28).

As described above, in the STOP mode, the FR lever 24 is located at the center position, so that the rotating lever 41 is located substantially at the center in the rotating direction, and both the first gear 42 and the second gear 43 It is not meshed with the limiter gear 34 (see FIG. 21). In the STOP mode, the spring engaging portion 26b of the held member 26 is positioned close to the spring engaging portion 24e of the FR lever 24 at the center position in the Y direction.
The spring engagement portion 24e and the spring engagement portion 26b are sandwiched in a state where b and 27c are crossed (see FIG. 21). Further, in the STOP mode, the engagement protrusion 21b of the switch lever 21 is engaged with the stop engagement edge 25a of the cam hole 25 of the FR lever 24 (see FIG. 21).

When the FR lever 24 is moved in the X1 direction while the head switching lever 58 is at the first regulating position in the STOP mode, the FF mode is set (FIG. 2).
6).

When the FR lever 24 is moved in the X1 direction, the switch lever 21 is turned in the R2 direction against the spring force of the lock spring 22, and the engaging projection 21b is engaged with the fast-forward engaging edge 25c. Is done. Therefore, the switch operating section 21c operates the drive switch, and the drive motor 12 is rotated.

At the same time, when the FR lever 24 moves in the X1 direction, the rotating lever 41 is rotated in the R1 direction, and the first gear 42 is meshed with the limiter gear 34. Then, the limiter gear 3 according to the rotation direction of the drive motor 12
4 is rotated in the R1 direction, the swing lever 38 is rotated in the R1 direction, the driven gear 39 meshes with the reel base gear 44, and the reel base gear 44 is rotated in the R1 direction.

As described above, the FF mode during forward running is set by rotating the drive motor 12 and engaging the first gear 42 with the limiter gear 34 (see FIG. 26). Then, in the FF mode, the reel base gear 44 is rotated at a high speed due to the relationship of each gear ratio, and the tape is fast-forwarded.

In the STOP mode, since the tape traveling lever 16 is not operated in the Y1 direction, the movement of the held member 26 in the X1-X2 direction is not restricted. Therefore, when the FR lever 24 is moved in the X1 direction, the spring engaging portion 24e and the spring engaging portion 26b are sandwiched in a state where the elastic contact portions 27b and 27c of the return spring 27 cross each other. As the return spring 27 is rotated around the support shaft 11d of the mechanical chassis 11, the held member 26 is moved in the X1 direction together with the FR lever 24 to reach the non-operating position (see FIG. 26). Therefore, the FR lever 24
Does not act on the spring force of the return spring 27.

If the stop lever 18 is operated in the Y1 direction in the FF mode, the sliding edge 24c of the FR lever 24 is pressed by the pressing piece 18c. When the sliding edge 24c is pressed by the pressing piece 18c, the FR lever 24 located at the first position is moved in the X2 direction to reach the center position.
Then, the rotation lever 41 is rotated in the R2 direction to release the engagement between the first gear 42 and the limiter gear 34, and the switch lever 21 is rotated in the R1 direction by the spring force of the lock spring 22, and the engagement protrusion is formed. 21b is engaged with the stop engagement edge 25a of the cam hole 25. Then, since the operation of the drive switch by the switch operation unit 21c is released, the rotation of the drive motor 12 is stopped. Therefore, ST
The OP mode is set (see FIG. 21).

Since the spring engaging portion 24e and the spring engaging portion 26b are held between the FR lever 24 and the held member 26 by the return spring 27, the X
With the movement in the two directions, the held member 26 is moved in the X2 direction.

When the FR lever 24 is moved in the X2 direction while the head switching lever 58 is at the first restriction position in the STOP mode, the REW mode is set (see FIG. 27).

When the FR lever 24 is moved in the X2 direction, the switch lever 21 is rotated in the R2 direction against the spring force of the lock spring 22, and the engaging projection 21b is engaged with the rewinding engaging edge 25b. Is done. Therefore, the switch operating section 21c operates the drive switch, and the drive motor 12 is rotated.

At the same time, when the FR lever 24 moves in the X2 direction, the rotating lever 41 is rotated in the R2 direction, and the second gear 43 is engaged with the limiter gear. Then, the limiter gear 3 according to the rotation direction of the drive motor 12
4 is rotated in the R2 direction, the swing lever 38 is rotated in the R2 direction, the driven gear 40 meshes with the reel base gear 45, and the reel base gear 45 is rotated in the R2 direction.

As described above, when the drive motor 12 is rotated and the second gear 43 is meshed with the limiter gear 34, the REW mode during forward running is set (see FIG. 27). Then, in the REW mode, the reel base gear 45 is rotated at high speed due to the relationship between the gear ratios, and the tape is rewound.

In the STOP mode, since the tape running lever 16 is not operated in the Y1 direction, the movement of the held member 26 in the X1-X2 direction is not restricted. For this reason, the held member 2 together with the FR lever 24
6 is moved in the X2 direction to reach the inoperative position (see FIG. 27). Therefore, the spring force of the return spring 27 does not act on the FR lever 24.

In the REW mode, the stop lever 18
Is operated in the Y1 direction, the sliding edge 24b of the FR lever 24 is pressed by the pressing piece 18c. When the sliding edge 24b is pressed by the pressing piece 18c, the FR lever 24 located at the second position is moved in the X1 direction to reach the center position. Then, the rotating lever 41 is rotated in the R1 direction to release the engagement between the second gear 43 and the limiter gear 34, and the switch lever 21 is rotated in the R1 direction by the spring force of the lock spring 22 to engage the engaging protrusion. 21b is the cam hole 25
Is engaged with the stop engagement edge 25a. Then, since the operation of the drive switch by the switch operation unit 21c is released, the rotation of the drive motor 12 is stopped. Therefore, the STOP mode is set again (see FIG. 21).

The FR lever 24 and the held member 26 are moved by the return spring 27 between the spring engagement portion 24 e and the spring engagement portion 26.
b, the held member 26 is moved in the X1 direction with the movement of the FR lever 24 in the X1 direction.

As described above, in the cassette tape recorder 1, the movement of the held member 26 in the X1-X2 direction is regulated by the regulating portion 16c formed on the tape traveling lever 16. Since the configuration is simple and the number of parts does not increase, it contributes to a reduction in manufacturing cost.

Next, a brief description will be given of a case where the FR lever 24 is operated in the STOP mode with the head switching lever 58 at the second restriction position (FIG. 28).
reference). FIG. 28 shows a state in which the tape is rewound.

When the FR lever 24 is moved in the X2 direction, the switch lever 21 is rotated in the R2 direction, and the engaging projection 21b is engaged with the rewinding engaging edge 25b. Therefore, the switch operating section 21c operates the drive switch, and the drive motor 12 is rotated.

At the same time, when the FR lever 24 moves in the X2 direction, the turning lever 41 is turned in the R2 direction, and the second gear 43 is engaged with the limiter gear. Then, the limiter gear 3 according to the rotation direction of the drive motor 12
4 is rotated in the R1 direction, the swing lever 38 is rotated in the R1 direction, the driven gear 39 meshes with the reel base gear 44, and the reel base gear 44 is rotated in the R1 direction.

As described above, when the drive motor 12 is rotated and the second gear 43 is meshed with the limiter gear 34, the REW mode in which the head switching lever 58 is at the second restriction position is set. Is done. And R
In the EW mode, the reel base gear 4
4 is rotated at a high speed, and the tape is rewound.

In the STOP mode, since the tape running lever 16 is not operated in the Y1 direction, the movement of the held member 26 in the X1-X2 direction is not restricted. Therefore, when the FR lever 24 is moved in the X2 direction, the held member 26 is moved together with the FR lever 24 in the X2 direction.
To the inoperative position (see FIG. 28). Therefore, the spring force of the return spring 27 does not act on the FR lever 24.

In the REW mode, the stop lever 18
Is operated in the Y1 direction, the sliding edge 24b of the FR lever 24 is pressed by the pressing piece 18c, and the FR lever 24 at the second position is moved in the X1 direction together with the held member 26 to return to the original state. And, when the rotating lever 41 is R
When the switch lever 21 is rotated in one direction to return to the original state, the switch lever 21 is rotated in the R1 direction, and the engagement protrusion 21b is engaged with the stop engagement edge 25a of the cam hole 25.
Is stopped. Therefore, the STOP mode is set again (see FIG. 21).

In the STOP mode, when the FR lever 24 is operated in the X1 direction with the head switching lever 58 at the second restriction position, the switch lever 21 is rotated in the R2 direction to drive the drive motor. 12 is rotated, and at the same time, the rotation lever 41 is rotated in the R1 direction by the movement of the FR lever 24 in the X1 direction, and the first gear 42 is meshed with the limiter gear 34. Then, the limiter gear 34 is rotated in the R2 direction, the swing lever 38 is rotated in the R2 direction, the driven gear 40 is meshed with the reel base gear 45, and the reel base gear 45 is rotated in the R2 direction.

As described above, when the drive motor 12 is rotated and the first gear 42 is meshed with the limiter gear 34, the FF mode in a state where the head switching lever 58 is at the second restriction position is set. Is done. And FF
In the mode, the reel base gear 45 is rotated at a high speed due to the relation of each gear ratio, and the tape is fast-forwarded.

When the FR lever 24 is moved in the X1 direction, the held member 26 is moved together with the FR lever 24 in the X1 direction.
Moved in one direction to reach the non-working position. Therefore, the spring force of the return spring 27 does not act on the FR lever 24.

When the stop lever 18 is operated in the Y1 direction in the FF mode, the sliding edge 24c of the FR lever 24 is pressed by the pressing piece 18c, and the FR lever 24 located at the first position is moved together with the held member 26 in the X2 direction. Is moved to and returns to the original state. And, the rotating lever 41 is R2
And the switch lever 21 is rotated in the R1 direction, and the engagement protrusion 21b is
5, and the rotation of the drive motor 12 is stopped. Therefore, the STOP mode is set again (see FIG. 21).

As described above, in the cassette tape recorder 1, the FF mode or the REW mode and the STOP mode
When the setting is switched between the mode and the mode, the spring force of the return spring 27 does not act on the FR lever 24. Therefore, the operation of the FR switch 9 at the time of switching the setting between the FF mode or the REW mode and the STOP mode can be performed with a very small force, so that the operability can be improved.

In order to move the FR lever 24 and the held member 26 integrally, spring engaging portions 24e and 26b are formed on the FR lever 24 and the held member 26, respectively, in which return springs 27 are engaged. Because by doing
Since the configuration is simple and the number of parts does not increase, it contributes to a reduction in manufacturing cost.

Further, the STOP mode is set from the FF mode or the REW mode by setting the pressing piece 18c formed on the stop lever 18 and the sliding edge 24 formed on the FR lever 24.
Since the sliding operation with b and 24c is performed, the configuration is simple and the number of parts does not increase, which contributes to further reduction of the manufacturing cost.

It should be noted that the specific shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment for carrying out the present invention, and the present invention is not limited thereto. Should not be construed as limiting the technical scope of the present invention.

[0183]

As is apparent from the above description, the tape recording and / or reproducing apparatus of the present invention is operated to move between the first position and the second position with respect to the center position, and A switching operation unit for switching between fast-forward and rewind; a tape traveling mechanism for fast-forwarding or rewinding the tape when the switching operation unit is operated to the first position or the second position; A return spring for returning the switching operation unit operated in the recording or reproduction state from the first position or the second position to the center position, and a switching operation unit operated in the non-recording or non-reproduction state of the signal to the tape. Return means for returning to the center position, and a spring force of the return spring acting on the switching operation part when the switching operation part is operated to the first position or the second position in a state of recording or reproducing a signal on the tape. When the switching operation unit is operated to the first position or the second position in the non-recording or non-reproduction state of the signal on the tape while the signal is not being recorded on the tape, the spring force of the return spring does not act on the switching operation unit. And a held member held in the operating position.

Therefore, the operation of the switching operation unit can be performed with a very small force in a state where the signal is not recorded or reproduced on the tape, so that the operability can be improved.

According to the second aspect of the present invention, the switching operation portion and the held member are respectively engaged with a return spring, and the switching operation portion is operated in a non-recording or non-reproduction state of a signal to the tape. A spring engaging portion is formed to move the switching operation portion and the held member at a fixed relative position when the member is held, and to hold the held member in the non-recording or non-reproducing state of the signal on the tape. Since it is held at the operating position, the structure is simple and the number of parts does not increase, which contributes to a reduction in manufacturing cost.

In the invention according to claim 3, a stop lever for stopping the operation of the tape running mechanism is provided,
A sliding edge is formed on the switching operation portion, and when the stop lever is operated by the stop lever as the return means, the sliding edge is pressed to move the switching operation portion from the first position or the second position to the center position. Since the pressing piece for returning to the above is formed, the structure is simple and the number of parts does not increase, which contributes to further reduction of the manufacturing cost.

According to the present invention, a tape running lever operated when a recording or reproducing state of a signal on a tape is set is provided, and the tape running lever is provided on the tape running lever. Since the regulating portion for holding the held member at the operation position in the recording or reproducing state is formed, the structure is simple and the number of parts does not increase, which contributes to a reduction in manufacturing cost.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention together with FIG. 2 to FIG. 28, which is a schematic perspective view of a cassette tape recorder.

FIG. 2 is a schematic enlarged rear view of the magnetic tape drive mechanism showing a STOP mode.

FIG. 3 is a schematic enlarged plan view of a magnetic tape drive mechanism showing a STOP mode.

FIG. 4 is an enlarged sectional view showing a cam member, a limiter gear, and a swing lever.

FIG. 5 is an enlarged view showing a swing lever.

FIG. 6 is a schematic enlarged rear view of the magnetic tape drive mechanism showing a NOR mode.

FIG. 7 is a schematic enlarged plan view of a magnetic tape drive mechanism showing a NOR mode.

FIG. 8 is a schematic enlarged rear view of the magnetic tape drive mechanism showing the REV mode.

FIG. 9 is a schematic enlarged plan view of a magnetic tape drive mechanism showing a REV mode.

FIG. 10 shows an automatic reverse operation and a shut-off operation together with FIGS. 11 to 15, in which the sliding contact portion of the swing lever is brought into sliding contact with the sliding contact cam portion by rotation of the reel base gear. It is a schematic enlarged rear view which shows a state.

FIG. 11 is a schematic enlarged rear view showing a state where a reel base gear is stopped and a sliding contact portion of a swing lever is engaged with a protruding cam portion.

FIG. 12 is a schematic enlarged rear view showing a state where a part of the traveling reversing gear and a part of the traveling stopping gear are in contact with a cam member.

FIG. 13 is a schematic enlarged rear view showing a state in which a traveling reversing gear is meshed with a gear portion of a cam member to operate a traveling direction switching lever.

FIG. 14 is a schematic enlarged rear view showing a state in which a sliding contact portion of a swing lever is slidingly contacting a sliding contact cam portion by an urging spring.

FIG. 15 is a schematic enlarged rear view showing a state in which a traveling stop gear is rotated and a traveling stop lever is operated.

FIG. 16 is a schematic enlarged rear view of the magnetic tape drive mechanism showing the N-REC mode.

FIG. 17 is a schematic enlarged rear view showing a state in which the travel restriction lever is restricted by the movement restriction lever in the N-REC mode.

FIG. 18 is a schematic enlarged rear view showing a state in which the regulation of the movement regulating lever on the traveling direction switching lever is temporarily released by the traveling reversing gear.

FIG. 19 is a schematic enlarged rear view of the magnetic tape drive mechanism showing the R-REC mode.

FIG. 20 is a schematic enlarged rear view showing a state in which the travel restriction lever is restricted by the movement restriction lever in the R-REC mode.

FIG. 21 is a schematic enlarged rear view showing a positional relationship between an FR lever and a held member in a STOP mode.

FIG. 22 is a schematic enlarged rear view showing a state where a CUE mode is set from a NOR mode.

FIG. 23 is a schematic enlarged rear view showing a state in which a REVIEW mode is set from a NOR mode.

FIG. 24 is a schematic enlarged rear view showing a state in which the CUE mode is set from the REV mode.

FIG. 25 is a schematic enlarged rear view showing a state in which a REVIEW mode is set from a REV mode.

FIG. 26 is a schematic enlarged rear view showing a state in which the FF mode is set when the head switching lever is at the first restriction position.

FIG. 27 is a schematic enlarged rear view showing a state in which the REW mode is set in a state where the head switching lever is at the first restriction position.

FIG. 28 is a schematic enlarged rear view showing a state in which the REW mode is set when the head switching lever is at the second restriction position.

29 shows a part of a mechanism for setting the FF mode and the REW mode in the conventional cassette tape player together with FIG. 30, and FIG. 29 shows a state in which the STOP mode is set.

FIG. 30 is a diagram showing a state in which the FF mode is set.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cassette tape recorder (tape recording and / or reproducing apparatus), 16 ... Tape running lever, 16c ... Restriction part, 18 ... Stop lever, 18c ... Pressing piece (return means), 24 ... FR lever (Switch operation part) , 24b: sliding edge, 24c: sliding edge, 24e: spring engaging portion, 26: held member, 26b: spring engaging portion, 27: return spring

Claims (4)

[Claims] A switching operation unit for moving between a first position and a second position based on a center position to switch between fast-forward and rewind of a tape; A tape traveling mechanism for fast-forwarding or rewinding the tape when operated to the second position; and a switching operation unit operated in a state of recording or reproducing a signal to or from the tape from the first position or the second position. A return spring for returning to a center position; return means for returning a switching operation unit operated in a non-recording or non-reproduction state of a signal to a tape to a center position; and a switching operation unit for recording or reproduction of a signal on a tape Is operated at the first position or the second position, the spring force of the return spring is held at the operating position acting on the switching operation portion, and the switching operation is performed in the non-recording or non-reproduction state of the signal on the tape. And a held member that is held at a non-operating position where the spring force of the return spring does not act on the switching operation unit when the unit is operated to the first position or the second position. And / or a playback device. 2. The switching operation unit and the held member are engaged with a return spring, respectively, and when the switching operation unit is operated in a non-recording or non-reproduction state of a signal to a tape, the switching operation unit and the held member are held. Forming a spring engaging portion for moving the member with the fixed relative position held therein, and holding the held member at the non-operating position in a non-recording or non-reproducing state of the signal on the tape. The tape recording and / or reproducing apparatus according to claim 1, wherein: 3. A stop lever for stopping the operation of the tape running mechanism is provided, a sliding edge is formed in the switching operation portion, and when the stop lever is operated by the stop lever as the return means, the sliding edge is pressed. Switch operation unit to the first
2. The tape recording and / or reproducing apparatus according to claim 1, wherein a pressing piece for returning from the second position or the second position to the center position is formed. 4. A tape running lever which is operated when a recording or reproducing state of a signal on a tape is set, wherein a member to be held is held on the tape running lever in a recording or reproducing state of a signal on the tape. 2. The tape recording and / or reproducing apparatus according to claim 1, wherein a restricting portion for holding the tape at the operation position is formed.