JPS647415B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a tape recorder device with soft touch operation, and particularly to prevention of malfunction thereof.

[Technical background of the invention and its problems]

As is well known, there is a desire for tape recorders to be small and lightweight, so that users can easily carry them in their pockets, for example. A microcassette tape recorder using a lightweight microtape cassette appeared,
It is becoming popular. The next requirement for such a microcassette tape recorder is so-called soft-touch operation so that the various controls for making the tape run in a predetermined state can be easily operated with a small amount of force. It is to become

By the way, when the above-mentioned microcassette tape recorder is adapted for soft-touch operation, a particular problem is that by adding a mechanism for soft-touch operation, the microcassette tape recorder itself becomes larger and heavier. The goal is to avoid doing so. Therefore, as a soft touch operation mechanism for a microcassette tape recorder, it has been possible to operate reliably with an organic and simple structure without waste, and is suitable for miniaturization and weight reduction.
There is a strong demand for improvements that include measures to prevent malfunctions and power-saving measures to reduce battery power consumption.

Furthermore, it is desired that further improvements be made not only to the above-mentioned soft touch operation mechanism but also to the structure of other parts so that they are organic and suitable for miniaturization and weight reduction. Improvements are also desired in terms of not impairing the aesthetic appearance.

[Purpose of the invention]

This invention has been made based on the above circumstances, and can reliably prevent malfunctions such as stopping the soft touch operation mechanism in the middle of operation with a simple configuration, and effectively promote miniaturization and weight reduction. It is an object of the present invention to provide an extremely good tape recorder device particularly suitable for a microcassette tape recorder.

[Summary of the invention]

That is, the present invention includes a head chassis which is supported so as to be movable between first and second positions on which a head is mounted and which makes the head contact and non-contact with the tape; a switch that is operated to energize the motor; a rotating body to which the rotational force of the motor is transmitted in conjunction with the operation of the tape constant speed running operation member; and a rotating body that operates the head chassis by the rotational force of the rotating body. 1st
and a drive mechanism for moving between the second positions, an interlocking member that engages with the head chassis in a state in which the head chassis is moved from the first position in conjunction with the movement of the head chassis. includes a holding member that holds the switch at an operating position via a holding member, and even if the tape constant speed running operating member is set to a non-operating state during rotation of the rotating body, the rotating body is not at a predetermined rotational position. The motor is characterized in that the motor is energized and driven until the target is reached.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the appearance of a microcassette tape recorder with radio to which the present invention is applied. That is, the approximately box-shaped cabinet 11 is formed to a size that allows the user to easily carry it by putting it in a pocket or the like. Approximately in the center of the front panel 11a of the cabinet 11 is a tape cassette storage section 1 that can accommodate a micro tape cassette (not shown).
A cassette lid 13 for closing the cassette 2 is provided.
The cassette lid 13 is rotated in the directions of arrows A and B in the figure to perform opening and closing operations. Further, in the upper part of the front panel 11a of the cabinet 11 in the figure, an FM and AM reception frequency indicating section 14 is provided. Further, a function switch 15 is disposed between the cassette lid 13 and the reception frequency indicating section 14 for selectively switching the tape recorder function, AM reception function, and FM reception function.

On the other hand, the front panel 11 of the cabinet 11
A speaker sound emitting section 16 is formed at the lower part of the figure a. A tape counter 1 is located between the speaker sound emitting section 16 and the cassette lid 13.
7 and its reset button 18 are provided.

In addition, on the top surface of the cabinet 11 in the figure,
Built-in microphone 19, earphone jack 2
0 and an external microphone jack 21 are respectively provided.

Here, on one side panel 11b of the cabinet 11, there are a tuning dial 22, a recording operator 23, a playback operator 24, a stop/eject operator 25, a rewind operator 26, a fast forward operator 27,
A volume adjustment dial 28, a pause operator 29, and a tape running speed switch 30 are provided, respectively. Of these, the above channel selection dial 22
When rotated, the FM or AM broadcast radio wave selected by the function switch 15 is selected. In addition, the above playback,
Rewind and fast forward controls 24, 26, 27
are locked at the respective pressed positions and function to play, rewind, and fast forward the tape. Further, when the recording operator 23 is pressed together with the playback operator 24, it is locked in the pressed position and records the signals from the built-in microphone 19, the external microphone, and the FM and AM broadcast reception signals on tape. It functions like this.

Further, the stop/eject operator 25 is
It is not locked at the push-in position by pressing operation, and 1
With the second pressing operation, the other operators 23, 24, 26, and 27, which were previously locked in the pushed-in position, are unlocked and returned to their original positions, and with the second pressing operation, the cassette lid 13 is opened. It performs a so-called double eject function in which the microtape cassette can be opened and taken out from the tape cassette storage section 12. Furthermore, the pause operator 29 is slid in the vertical direction in the figure, and when operated upward in the figure, it temporarily stops the running of the tape for recording and playback, and when operated downward in the figure, it temporarily stops the running of the tape. This starts the recording and playback tape running again. The tape running speed selector switch 30 is also slid in the vertical direction in the figure, and when it is operated downward in the figure, the tape running speed for recording and playback is set to the standard 2.4 [cm/sec]. When operated upward, the tape running speed for recording and playback is set to half speed.
1.2 [cm/sec].

Furthermore, a carrying strap 31 is attached to the other side panel of the cabinet 11, which is not visible in the drawing.

Here, as shown in FIG. 2, the cabinet 11 is constructed in a substantially box shape by combining a front cabinet 32, a back cabinet 33, and the side panel 11b. First, the front cabinet 3
2, the cassette lid 13 is rotatably supported on its front panel 11a. Further, the function switch 15, tape counter 17 and reset button 18 are inserted into the front panel 11a of the front cabinet 32 (however, the tape counter 17 is not inserted and the counter display can be viewed from the outside). ) through hole 32a
32c to 32c are formed. Further, the front panel 11a is provided with FM and AM reception frequency scales 32d, and a speaker is attached to the back surface of the speaker sound emitting section 16, which is hidden from view in FIG.

The side panel 11b also includes the channel selection dial 22, a recording operator 23, a playback operator 24,
Various cutouts 11c to 11f are formed to enable external operation of the rewind operator 26, fast forward operator 27, pause operator 29, etc., and the stop/eject operator 25 and tape running speed changeover switch. Through hole 1 through which 30 is inserted
1g and 11h are formed, respectively.

Further, the back cabinet 33 includes the tape cassette storage section 12, recording, playback, stop/eject, rewind, and fast forward operators 23 to 2.
7. A tape recorder mechanism section 34 equipped with a tape counter 17, a reset button 18, etc. is attached. A tape drive motor 35 is attached to this tape recorder mechanism section 34, and an operation section 2 into which the pause operation element 29 is fitted is attached.
A printed wiring board 36 is attached to which a pause changeover switch 29b having a switch 9a and a tape running speed changeover switch 30 are connected. A printed wiring board 38 on which a governor circuit for controlling the rotational speed of the motor 35 is formed is connected to the printed wiring board 36 via a flexible printed wiring board 37.

Here, the pause changeover switch 29b functions to supply and de-supply electric power to the motor 35 by operating it, thereby making it possible to cause the tape to run or to temporarily stop it. be. Further, the tape running speed changeover switch 30 functions to switch the governor circuit and switch the amount of electric power supplied to the motor 35, thereby adjusting the tape running speed during recording and playback to a standard value. and half speed. Semi-fixed variable resistors 38a and 38b are connected to the printed wiring board 38 on which the governor circuit is formed to finely adjust the tape running speed between standard speed and half speed. These semi-fixed variable resistors 38a, 38b
is installed so that it can be adjusted from the outside via a battery storage section 39 formed in a portion of the back cabinet 33 facing the speaker sound emitting section 16 of the front cabinet 32. The battery storage section 39 is closed by a battery lid 39a.

Further, at predetermined positions of the back cabinet 33, the earphone jack 20, the external microphone jack 21, the channel selection dial 22, the volume adjustment dial 28, and the built-in microphone 19 are provided.
(not shown in FIG. 2), etc. are provided respectively. Furthermore, although not shown in FIG. 2, between the tape recorder mechanism section 34 and the back cabinet 33, there is a printed wiring board on which a tape recorder circuit section, a broadcast wave receiving circuit section, etc. are formed. is installed.

Here, FIG. 3 shows the back cabinet 33.
The tape recorder mechanism section 34 is shown taken out from the figure. That is, this tape recorder mechanism section 34 has various movable members, which will be described later, arranged on a main chassis 40, and is covered with a blinding plate 41 from above in the figure.
By fixing it to 0, it is integrated into a unit. Left and right reel stands 42 and 43 are rotatably supported by the main chassis 40, respectively. Blindfold board 4 by inserting each loosely
A pair of reel hubs of a microtape cassette (not shown) protrudes upward in FIG. 1 of FIG. Also, on the substantially perpendicular bisector of the imaginary line connecting the rotation centers of the left and right reel stands 42 and 43 of the main chassis 40,
A capstan 44 is rotatably supported.
That is, this tape recorder mechanism section 34 is of a center capstan type.

The capstan 44 is connected to the blind plate 4.
The blind plate 41 is protruded upward in FIG. 3 by loosely inserting the through hole 41c formed in the blind plate 41 in FIG. The main chassis 40 also includes a capstan 4.
A pair of substantially conical guide pins 45, 45 for guiding the microtape cassette are provided on both sides of the microtape cassette.
are provided protrudingly, and these guide pins 45, 45
are through holes 41d, 41d formed in the blind plate 41
are loosely inserted into the blind plate 41 and protrude upward in FIG. 3, respectively.

Here, the main chassis 40 and the blind plate 4
1, there is a head chassis 4 whose details will be described later.
6 is supported so as to be slidable in the directions of arrows C and D in FIG. At one end of the head chassis 46, a head stand 46c is attached to which a pinch lever 46a and a recording/reproducing head (hereinafter referred to as a recording/reproducing head) 46b are attached. The pinch lever 46a, the recording/reproducing head 46b, and the head stand 46c are all loosely inserted into a through hole 41e formed in the blinding plate 41, and project upward from the blinding plate 41 in FIG. The through hole 41e of the blind plate 41 is formed in a size that does not prevent the head chassis 46 from sliding in the directions of arrows C and D in FIG.

The pinch lever 46a is formed in a substantially U-shape, and one end of the pinch lever 46a is fitted onto a shaft 46d projecting from the head chassis 46, so that it is rotatably supported. Further, a pinch roller 46e is attached to the other end of the pinch lever 46a.
is rotatably supported. Here, the pinch lever 46a has a central portion wound around a shaft 46d, and both ends thereof are tows that are respectively locked to one end of the pinch lever 46a and a locking portion 46f protruding from the head stand 46c. Shion spring 46g
is biased to rotate counterclockwise in FIG. However, the third pinch lever 46a
The counterclockwise rotation in the figure is the pinch lever 46a.
An engaging arm portion 46h extending from the other end reaches a position where it is locked by a locking portion 46i protruding from the head stand 46c.

During recording and playback, the head chassis 46 is slid in the direction of arrow C in FIG. 3 by a mechanism to be described later, and the pinch lever 4 is
6a and the recording/reproducing head 46b are also moved in the same direction. Then, the pinch roller 46e comes into contact with the capstan 44, and the head chassis 46 is further moved in the direction of arrow C in FIG. In Figure 3, the pinch roller 46 is pushed back slightly in the clockwise direction.
e is stably pressed against the capstan 44 by the urging force of the torsion spring 46g. At this time, the recording/reproducing head 46b is brought into contact with the tape. However, during recording, the erasing head 23a, which is linked to the operation of the recording operator 23, is moved together with the pinch lever 46a and the recording/reproducing head 46b in the direction of arrow C in FIG. 3, and is brought into contact with the tape. .
The erase head 23a is a so-called magnetic erase head using a permanent magnet.

Further, a portion of the main chassis 40 facing the recording operator 23 is provided with an erroneous erasure prevention lever (not shown). Of this erroneous erasure prevention lever, the detection portion 23b that engages with the erroneous erasure prevention claw of the microtape cassette is connected to the blind plate 41.
The blind plate 41 is projected upward in FIG. 3 by being loosely inserted into a through hole 41f formed in the cover plate 41.

Here, the erasing head 23a of the blind plate 41
An eject lever 25a is supported on one side near the holder so as to be rotatable in the directions of arrows E and F in the figure. The eject lever 25a is rotated in the direction of the arrow E in FIG. 3 in conjunction with the operation of the stop/eject operator 25 to eject the microtape cassette.

Furthermore, a leaf spring 41g for holding down the microtape cassette, the tape counter 17, a reset button 18, etc. are arranged at predetermined positions on the blind plate 41, respectively.

Here, as shown in FIG. 4, the motor 35 is fixed to a sub-chassis 47 provided separately from the main chassis 40 with screws 47a, 47a. And this sub chassis 4
The motor 35 is attached to the main chassis 40 by fixing the motor 7 to the main chassis 40 with screws 47b, 47b. Further, a pulley 35b is fitted onto the rotating shaft 35a of the motor 35, and this pulley 35b is
It is connected to a flywheel 48 rotatably supported by the main chassis 40 via a belt 35c so that rotational force can be transmitted thereto. This flywheel 4
8 is configured coaxially with the capstan 44,
It is designed to rotate integrally.

Further, as shown in FIG. 5, the printed wiring board 36 is attached to the sub chassis 47 with screws 36a, 3
6a. However, this printed wiring board 36 is connected to the printed wiring board 3 on which the governor circuit is formed via a flexible printed wiring board 37.
8 are connected. Furthermore, a power leaf switch 49 is attached to the sub-chassis 47 with a screw 49a.
It is fixed by. This power leaf switch 49 includes a main body portion 49b fixed to the sub-chassis 47 by the screw 49a, and a main body portion 49b.
It consists of a pair of elastic contact pieces 49c and 49d that protrude from the base. The pair of elastic contact pieces 49c, 49d are separated from each other in a natural state, and when the pair of elastic contact pieces 49c, 49d are brought into contact with each other by an external force, the battery storage Electric power from a battery (not shown) housed in the unit 39 (see FIG. 2) is supplied to the motor 35 via the pause changeover switch 29b, the tape running speed changeover switch 30, the governor circuit of the printed wiring board 38, etc. It is designed to be supplied to That is, a pair of connection terminals 49e, 4 protruding from the main body 49b of the power leaf switch 49
9e and the printed wiring board 36, and the printed wiring board 38 and the power terminal (not shown) of the motor 35 are connected by connecting wires (not shown), respectively.

Furthermore, an engaging member 49f is attached to the tip of one of the pair of elastic contact pieces 49c, 49d. This engaging member 49
A substantially U-shaped engagement portion 49g is formed at f.

On the other hand, as shown in FIG. 4 again, the main chassis 40 has a lock plate 50 and a switch slider 51 along the protruding surface of each of the recording, playback, stop/eject, rewind, and fast forward operators 23 to 27. are arranged side by side. These lock plates 50
The switch sliders 51 and 51 are each independently supported so as to be slidable in the directions of arrows G and H in FIG. 4, and are normally biased in the direction of arrow H by a spring (not shown). First, the lock plate 50 is moved to the rewind/fast forward operator 2.
6 and 27 are engaged with the rewind and fast forward operation plates to be described later, and function to lock the rewind and fast forward operation plates at the push-in position. In addition, the above-mentioned playback/stop/eject operator 2
A regeneration and stop operation plate to which 4 and 25 are attached, which will be described later, engages with the lock plate 50, but is not locked at the pushed-in position depending on the lock plate 50. Then, the playback and stop operation plate is pushed into the lock plate 50.
4 in the direction of arrow G in FIG. 4, it functions to unlock the rewind and fast forward operation plates which are locked at the push-in position. Further, the switch slider 51 is engaged with the playback, rewind, and fast-forward operation plates, and is slid in the direction of arrow G in FIG. 4 when each of these operation plates is pushed. Although not shown in FIG. 4, one end of this switch slider 51 is interposed within the engaging portion 49g of the engaging member 49f previously shown in FIG.
By sliding the switch slider 51 in the direction of arrow G in FIG. 4, the elastic contact piece 49c of the power leaf switch 49 comes into contact with the elastic contact piece 49d. For this reason, each of the playback, rewind and fast forward controls 24, 26, 2
7 is operated, the motor 35 is driven to rotate.

Here, the detailed configuration and operation of the tape recorder mechanism section 34 will be explained below.
That is, in FIG. 6, when the microtape cassette 52 is installed in the tape cassette storage section 12, the left and right reel stands 42, 43 are attached to the pair of reel hubs 52 of the microtape cassette 52.
a, 52b, and the capstan 44 is loosely inserted into a through hole 52c formed in the lower central portion of the microtape cassette 52 in FIG. Here, the capstan 44 is provided with a gear 44 a coaxially configured on the back side of the main chassis 40 and rotating integrally with the capstan 44 . This gear 44a
is always meshed with a gear 44b rotatably supported by the main chassis 40. Further, the gear 44b is coaxially rotated integrally with the gear 44b.
A gear 44c having a smaller diameter than the gear 44b is formed.

A drive gear 53 that can mesh with the gear 44c is rotatably supported on the main chassis 40. As shown in FIG. 7, this drive gear 53 has a toothless notch 53a formed within an opening angle range of about 125 degrees from the center of rotation.
Usually, this notch 53a is the gear 4.
4c, and the driving gear 53 is opposite to the gear 44c.
It is designed so that it does not mesh with the Further, on one side of the drive gear 53, a thick wall portion 5 is provided at a predetermined radius.
3b is formed, and a drive portion 53c having the shape shown in the drawing is provided protruding from a predetermined surface of this thick portion 53b. Further, a locking portion 53d is formed at a predetermined position on the outer periphery of the thick portion 53b.

Here, as shown in FIG. 6 again, the drive portion 53c of the drive gear 53 is connected to the head chassis 4.
It is loosely fitted into a substantially semicircular concave cam portion 46j formed on a head stand 46c attached to the head 6. That is, the head stand 46c is as shown in FIG. 8a.
It has a shape as shown in FIG. 1, and has a portion 46k facing the pinch lever 46a and a portion 46l on which the recording/reproducing head 46b is mounted. As shown in FIG. 8b, a substantially semicircular cam portion 46j is formed on the back side of the portion 46k facing the pinch lever 46a.

In addition, in FIG. 6, a shaft 54 protruding from the main chassis 40 is located near the drive gear 53.
A lock lever 54 is provided which is rotatably supported with a substantially central portion thereof fitted into a. On one side of the lock lever 54, the driving gear 53 is provided.
First and second lock portions 54b and 54c are formed that can be selectively engaged with the locking portion 53d.
Here, on the right side of FIG.
and a stop operation plate 25a are arranged one on top of the other. These playback and stop operation panels 24a, 25
6, the playback/stop/eject operators 24 and 25 are respectively attached to the lower part of FIG.
By pressing 4 and 25, arrow C in the figure
Main chassis 4 so that it slides in the direction
It is supported by 0. Furthermore, although the playback and stop operation plates 24a and 25a are urged in the direction of arrow D in FIG. It has been completed to the position shown in the figure.

A bending engagement piece 24b is formed on one side of the regeneration operation plate 24a, and the bending engagement piece 24b and a bending engagement piece 54d formed at one end of the lock lever 54 are connected to each other. Since a coiled spring 24c is engaged between the two, the lock lever 54 is biased to rotate counterclockwise in FIG. 6 with respect to the regeneration operation plate 24a.
The lock lever 54 is rotated counterclockwise in FIG. 6 until one end of the lock lever 54 comes into contact with an engaging piece 24d protruding from one side of the playback operation plate 24a. Therefore, when the playback operation plate 24a is in the non-operation position shown in FIG. 6, the lock lever 54 is also stably held at the position shown in FIG. At this time, the lock lever 54
The first locking portion 54b is positioned opposite to the locking portion 53d of the drive gear 53.

On the other hand, one end of a torsion spring 46n whose center portion is wound around a shaft 46m protruding from the main chassis 40 is latched to the upper end in FIG. 6 of the head chassis 46 to which the head stand 46c is attached. has been done. The other end of the torsion spring 46n is locked to a locking piece 46p protruding from the main chassis 40, so that the head chassis 46 is biased in the direction of arrow D in FIG. At this time, the cam portion 46j of the head stand 46c
As a result, the drive portion 53c of the drive gear 53 is pressed downward in FIG.
is rotated clockwise in FIG. However, when the drive gear 53 rotates clockwise in FIG.
This is prevented by being locked by the first lock portion 54b of No. 4. Also, at this time, the drive gear 53
The notch 53a faces the gear 44c,
After all, the drive gear 53 is stably held in a state where a bias is applied in the clockwise direction in FIG.

Here, the playback and stop operation plates 24a, 25
Engagement portions 24e and 25b are formed at the upper portion of FIG. 6a, respectively. These engaging portions 24e,
25b are respectively engaged with engaging portions 55a formed at the upper ends of the locking members 55 in FIG. That is, the lock member 5
5, the approximate center thereof is connected to the guide pin 45 (third
(see figure) and is rotatably supported. Further, this lock member 55 is urged to rotate clockwise in FIG. Parts 24e, 25
b. Here, the engaging portion 24 of the playback and stop operation plates 24a, 25a
e, 25b, the playback and stop operation plate 24a,
Slanted portions 24f and 25c are formed, respectively, which allow the locking member 55 to rotate counterclockwise in FIG. 6 when the lock member 25a is slid in the direction of arrow C in FIG. Further, the engagement portion 24e of the regeneration operation plate 24a has an engagement portion 55a of the lock member 55.
A locking portion 24g is formed to be locked at the upper end portion of FIG.

Then, in the state shown in FIG.
Assume that the playback operation plate 24a is slid in the direction of arrow C in FIG. 6 by pressing . Then, the inclined portion 24f of the regeneration operation plate 24a presses the engaging portion 55a of the locking member 55, and the locking member 55 moves to the sixth position.
It is rotated counterclockwise in the figure. When the locking portion 24g of the playback operation plate 24a reaches a position opposite to the upper end portion of the engaging portion 55a of the locking member 55 in FIG. rotated in the direction. Therefore, as shown in FIG. 9, the locking portion 24g of the regeneration operation plate 24a is locked to the upper end portion of the engagement portion 55a of the locking member 55 in FIG.
4a (playback operation element 24) is locked at the push-in operation position.

At this time, as the regeneration operation plate 24a is slid upward in FIG. 9, the spring 2
4c, the lock lever 54 is rotated counterclockwise in FIG. Then, the first lock portion 54b of the lock lever 54 is disengaged from the locking portion 53d of the drive gear 53. For this reason, the drive gear 53 has a ninth gear, as previously explained in FIG.
Since it is biased clockwise in the figure, the drive gear 53 is rotated clockwise in FIG. 9, and at this time the drive gear 53 meshes with the gear 44c.

On the other hand, when the playback operation plate 24a is operated, the power leaf switch 49 is turned on via the switch slider 51, and the motor 35 is rotationally driven. Therefore, the rotational force of the motor 35 is transmitted to the flywheel 48 via the belt 35c, and the flywheel 48 is rotated clockwise in FIG. 9. The capstan 44 and gear 44a, which are coaxial with the flywheel 48, are also rotated in the same direction. Therefore, the gear 44b meshed with the gear 44a is rotated counterclockwise in FIG. 9, and the gear 44c is also rotated in the same direction, so that the drive gear 53 is eventually rotated clockwise in FIG. .

Then, the driving part 53c of the driving gear 53 moves within the cam part 46j of the head stand 46c, comes into contact with the end of the cam part 46j on the opposite side to the position shown in FIG. Push the stand 46c upward in FIG. Therefore, the head chassis 46 to which the head stand 46c is attached is slid upward in FIG. At the same time as being pressed against the capstan 44, the recording/reproducing head 46b is brought into contact with the tape.

Here, the drive gear 53 is further rotated clockwise in FIG.
As shown in the figure, when the center of rotation of the drive gear 53 exceeds the upper part in the figure, the notch 53a of the drive gear 53 is opposed to the gear 44c, and the locking part 53d is connected to the second part of the lock lever 54. Lock part 5
4c, and the rotation of the drive gear 53 is stopped. At this time, the cam portion 46j of the head stand 46c
This pushes the drive portion 53c of the drive gear 53 downward in FIG. As shown in Figure 10, it is rotated clockwise and held stably. That is, the pinch roller 46e is pressed against the capstan 44 via the tape, and the recording/reproducing head 46b is stably held in contact with the tape.

Next, a mechanism for running the tape will be explained. That is, as shown in FIG. 11, the capstan 44 is supported by being inserted through a substantially cylindrical bearing portion 40a formed in the main chassis 40. As shown in FIG. This bearing portion 40a is loosely inserted into a long hole 56a formed at one end of the winding lever 56. Further, the other end of the winding lever 56 has a long hole 56 into which a shaft 40b protruding from the main chassis 40 is loosely fitted.
b is formed. At approximately the center of the winding lever 56, gears 56c and 56d coaxial with each other are integrally and rotatably supported. Of these, the gear 56c is always meshed with the gear 44a of the capstan 44.

On the other hand, the left reel stand 42 coaxially supports a gear 42a with a large diameter and a gear 42b with a small diameter so that they can rotate freely. However, the above gear 4
2a, 42b and the left reel stand 42 are frictionally engaged and rotate together. The gear 56d can mesh with the gear 42a. In addition, the right reel stand 43
A gear 43a is coaxially and frictionally engaged with and rotatably supported by the gear 43a. The gear 43a is always meshed with the gear 43b of the gears 43b and 43c, which are configured coaxially with each other and rotatably supported integrally with the main chassis 40. Further, the gear 56c can mesh with the gear 43c. That is, the gears 56d, 56c
The winding lever 56 is selectively engaged with the gears 42a and 43c by swinging left and right in FIG. 11 along the elongated hole 56a from the shaft 40b.

Here, the winding lever 56 is connected to the shaft 40.
A torsion spring 56g whose central part is wound around b, and whose ends are respectively engaged with a locking piece 56e protruding from the main chassis 40 and a locking piece 56f protruding from the winding lever 56. The shaft 40b is biased to swing leftward in FIG. 11 along the elongated hole 56a with the shaft 40b as the base point. However, when the winding lever 56 moves to the left in FIG. The protrusion 56h formed at the lower end comes into contact with the protrusion 56h. In this position, the gear 56 of the winding lever 56
d and 56c are in a neutral position where they do not mesh with either the gear 42a or the gear 43c of the left reel stand 42.

Assume that the regeneration operator 24 is operated with the gears 56d and 56c in the neutral position as described above, and the head chassis 46 is slid upward in FIG. 11 as described above. Then, as shown in FIG. 12, the engaging portion 46q of the head chassis 46
is removed from the protrusion 56h of the take-up lever 56, so the take-up lever 56 is swung leftward in FIG. 12 by the biasing force of the torsion spring 56g. Therefore, the gear 56d meshes with the gear 42a. Since the gear 44a of the capstan 44 is rotated clockwise in FIG. 12 by the rotational force of the motor 35, the rotational force of the gear 44a is transmitted to the left reel stand 42 via the gears 56c, 56d, and 42a. be done. Therefore, the left reel stand 42 is rotated clockwise in FIG. 12, and the tape is run here in a reproducing state.

Assume that the stop/eject operator 25 is operated in the above-described playback state. Then, the first
As shown in FIG. 3, the stop operation plate 25a is slid upward in FIG. Therefore, the inclined portion 25c of the stop operation plate 25a comes into contact with the engaging portion 55a of the lock member 35, and the lock member 55 is rotated counterclockwise in FIG. At this time, the engaging portion 55a of the locking member 55 is disengaged from the locking portion 24g of the playback operation plate 24a, so the playback operation plate 24a is slid downward in FIG. 13 and returned to its original position.

Then, the engagement piece 24d of the playback operation plate 24a,
Since the bent engagement piece 54d of the lock lever 54 is pressed downward in FIG.
It is rotated clockwise in Figure 3. At this time, the second lock portion 54c of the lock lever 54 is disengaged from the locking portion 53d of the drive gear 53, so that the drive gear 53 is moved to the 13th position by the bias force in the clockwise direction in FIG. It is rotated clockwise in the figure, and the locking portion 53d is locked with the first locking portion 54b of the lock lever 54 as shown in FIG. 14, and returns to the position shown in FIG. 6 again.
Therefore, the head chassis 46 is returned to its original position as shown in FIG.
(see FIG. 1), the winding lever 56 is returned to the neutral position shown in FIG. 11, where it is stopped. The shape of the engaging portion 25b of the stop operation plate 25a is set so that it will not be locked by the locking member 55 even if the stop operation plate 25a is operated sufficiently upward in FIG.

Therefore, the head chassis 46 is connected to the motor 35.
Since the pinch roller 46e and the recording/reproducing head 46b are slid in the direction in which they come into contact with the tape using the rotational force of the
The playback state can be easily achieved by simply applying an operating force sufficient to lock a into the locking member 55, and a soft touch operation can be achieved.

As described above, the head stand 46c to which the recording/reproducing head 46b is attached and the head chassis 46 are integrated, and the drive section 53c of the drive gear 53 is directly engaged with the cam section 46j formed on the head stand 46c. Since the head chassis 46 is moved at the same time, the structure is simple and reliable operation can be performed. In this regard, the conventional soft touch operation mechanism rotates a gear having a cam part by the rotational force of a motor, and moves the head chassis to a predetermined position via a drive member driven by the cam part. . For this reason, the drive member is interposed between the gear and the head chassis, which complicates the configuration and makes assembly difficult. It also tends to cause loss during power transmission, leading to unstable operation. This is problematic.

However, by directly engaging the drive portion 53c of the drive gear 53 with the cam portion 46j of the head stand 46c, the configuration is simplified, and it is possible to effectively promote downsizing and weight reduction, while also reducing loss during power transmission. It is less likely to occur and can ensure reliable operation.
This also saves battery power.

Next, as shown in FIG. 15, a bent engagement piece 57a formed at one end of the tape cassette detection lever 57 is engaged with one side of the lock lever 54. As shown in FIG. This tape cassette detection lever 5
7 is rotatably supported by the blind plate 41 via a shaft 57b in a substantially seesaw shape. The other end of the tape cassette detection lever 57 is opposed to the lower surface of the microtape cassette 52 in FIG. That is, when viewed from the side, the tape cassette detection lever 57 is bent into a substantially doglegged shape, as shown in FIG. It is biased by a spring (not shown).

When the microtape cassette 52 is not placed on the blind plate 41, the bent engagement piece 57a faces the lock lever 54, so the playback operation plate 24a is operated upward in FIG. However, the lock lever 54 is prevented from being rotated counterclockwise in FIG. 15. Therefore, the first lock portion 54b of the lock lever 54 is not released from the locking portion 53d of the drive gear 53 and is not in an operating state.

Here, as shown in FIG. 16b, the blindfold plate 4
When the microtape cassette 52 is placed on the tape cassette 1, the other end of the tape cassette detection lever 57 is pressed by the lower surface of the microtape cassette 52 in the drawing. Therefore, the tape cassette detection lever 57 is rotated counterclockwise in FIG. Therefore, when the regeneration operation plate 24a is operated upward in FIG. 15, the lock lever 54 is rotated counterclockwise in FIG. 15, as described above, to enter the regeneration state.

Therefore, as described above, when the microtape cassette 52 is not installed, the playback operation plate 24a (that is, the playback operation element 24) is operated to the normal operation position, but the lock lever 54 is not moved. By preventing the playback operation panel 24a from entering the operating state, it is possible to prevent problems such as the user applying excessive force to the playback operation panel 24a and deforming it.
That is, this type of conventional mechanism locks the playback operation panel so that it cannot be operated by pressing when no microtape cassette is attached. However, in such a microcassette tape recorder, in order to achieve overall reduction in size and weight, various parts are made extremely thin and have weak mechanical strength. Therefore, if the user accidentally presses the playback control button without a microtape cassette installed, excessive force will be applied to the playback control panel, easily bending, twisting, or deforming it. There are many problems.

However, as described above, when the microtape cassette 52 is not installed, the playback operation plate 24a can be operated to the normal operation position, and the lock lever 54 is not moved to prevent it from being activated. When the cassette 52 is not installed, the user accidentally presses the playback operator 2.
Even if 4 is pressed, no unreasonable force is applied to the reproduction operation plate 24a, and bending or deformation can be prevented. Also,
The structure is simple and does not hinder miniaturization.

Next, the case where the rewind operator 26 is operated will be explained. That is, in FIG. 17,
The rewind operation plate 26a is supported by the main chassis 40 so as to be slidable in the directions of arrows C and D in FIG. The rewind operator 26 is attached to the lower end of the rewind operation plate 26a in FIG. 17. Here, the rewind operation plate 2
At the upper part of 6a in FIG. 17, the winding lever 5
A through hole 26b is formed into which a protrusion 56i formed on one side of the hole 26b is loosely fitted. One side of the through hole 26b engages with the protrusion 56i when the rewind operation plate 26a is slid upward in FIG. An inclined portion 26c is formed that allows the device to be swung rightward in FIG.

Therefore, when the rewind operation plate 26a is operated in the direction of arrow C in FIG. 17, the take-up lever 56 is swung rightward in the figure, and the gear 56c is meshed with the gear 43c. At this time, by operating the rewind operation plate 26a, the switch slider 51 is
Since the power leaf switch 49 is turned on via the motor 35, the motor 35 is rotated, and the gear 44a of the capstan 44 is rotated clockwise in FIG. 17 by its rotational force. Therefore, the rotational force of the gear 44a is transmitted to the right reel stand 43 via the gears 56c, 43c, 43b, and 43a. Then, the right reel stand 43 is rotated counterclockwise in FIG. 17, and the tape is run here in a rewound state.

Further, a case where the fast forward operator 27 is operated will be explained. That is, in FIG.
The fast-forward operation plate 27a is supported by the main chassis 40 so as to be slidable in the directions of arrows C and D in FIG. The fast-forward operation element 27 is attached to the lower end of the fast-forward operation plate 27a in FIG. 18. Here, the above-mentioned fast forward operation plate 2
A substantially crank-shaped through hole 27b is provided in the substantially central portion of 7a.
A protrusion 58a formed at one end of the fast-forwarding lever 58 is loosely fitted into the through hole 27b. The other end of the fast-forwarding lever 58 is fitted onto a shaft 58b projecting from the main chassis 40, so that it is rotatably supported. The through hole 27b of the fast-forward operating plate 27a engages with the protrusion 58a of the fast-forward lever 58 when the fast-forward operating plate 27a is slid in the direction of arrow C in FIG. 1st
8, and when the fast-forward operation plate 27a is returned in the direction of arrow D in FIG. Slanted portions 27c and 27d that can be rotated clockwise in the figure are formed, respectively.

Here, a gear 58c that can mesh with the gear 44c is provided at the third end of the fast-forwarding lever 58.
It is rotatably supported. On the other hand, the main chassis 40 rotatably supports a gear 42c that is always meshed with the gear 42b of the left reel stand 42. This gear 42c also includes the gear 58.
A gear 42d that can mesh with the gear 42d is provided so as to rotate coaxially and integrally with the gear 42d.

Then, when the fast-forward operation plate 27a is operated in the direction of arrow C in FIG.
The gear 58c is rotated counterclockwise in the figure, and the gear 4
4c and 42d are meshed together. At this time, by operating the fast-forwarding operation plate 27a, the power leaf switch 49 is turned on via the switch slider 51, as described above, so the motor 35 is rotated, and its rotational force causes the gear 44a of the capstan 44 to turn on. is rotated clockwise in FIG. Therefore, the rotational force of the gear 44a is transferred to the gears 44b and 44.
c, 58c, 42d, 42c, and 42b to the left reel stand 42. Then, the left reel stand 42 is rotated clockwise in FIG. 18, and the tape is run here in a fast forward state.

Next, in the microcassette tape recorder described here, when the rewind and fast forward operators 26 and 27 are operated in a playback state in which the replay operator 24 is locked at the operating position, the rewind and fast forward operator 26 is operated. , 27 are operated, and when the operation is stopped, the playback mode is resumed, so that so-called review and queue operations can be performed. Therefore, first, the review operation will be explained. That is, suppose that the rewind operator 26 is operated to slide the rewind operation plate 26a upward in FIG. 19, as shown in FIG. 19, in the playback state as previously described with reference to FIG. At this time, the playback operation panel 2
The lock by the locking member 55 of 4a is not released, and when the playback operation plate 24a is operated, the lock plate 50 explained earlier in FIG. 4 locks the rewind and fast forward operation plates 26a and 27a at the operation position. Since the rewinding operation plate 26a has been moved to the non-operating position (the position slid in the direction of arrow G in FIG. 4), the rewinding operation plate 26a is not locked in the operation position.

Here, as shown in FIG. 19 again, a locking portion 26d that engages with one side portion of the lock lever 54 is formed at the lower portion of the rewind operation plate 26a in FIG. Therefore, when the rewind operation plate 26a is slid upward in FIG. 19 in the playback state, its locking portion 26d is engaged with the lock lever 54, and the lock lever 54 is rotated clockwise in FIG. be done. Then, as mentioned earlier in the transition from the regeneration to the stop state, the second lock lever 54 is activated.
The lock portion 54c is the locking portion 53d of the drive gear 53.
will be separated from. Therefore, the drive gear 53 is
It is rotated clockwise in FIG. 9, and its locking portion 53d is locked with the first locking portion 54b of the lock lever 54 and stopped. Therefore, headshishashi 46
is returned to the stop position shown in FIG.

At this time, by operating the rewind operation plate 26a,
As previously explained in the rewinding state, since the winding lever 56 is swung rightward in FIG. 19, the gear 5
6c is meshed with a gear 43c, and the tape is run therein in a rewound state.

Then, when the operation of the rewind operation plate 26a is stopped, since the rewind operation plate 26a is not locked by the lock plate 50, it is returned to the original non-operation position, and its locking portion 26d is released from the lock lever 54. Will be left. Then, since the playback operation plate 24a remains locked by the locking member 55, a counterclockwise rotating force is applied to the lock lever 54 by the spring 24c in FIG. Therefore, when the rewind operation plate 26a is returned, the lock lever 54 is rotated counterclockwise in FIG. As mentioned above, the playback state is returned to, and the rewind state is maintained only while operating the rewind operation plate 26a in the playback state, and when the operation of the rewind operation plate 26a is stopped, the playback state is returned. A review operation is performed as shown in FIG.

Next, the queue operation will be explained. That is, in the playback state as previously explained in FIG. 10,
Assume that the fast-forward operation element 27 is operated as shown in FIG. 20, and the fast-forward operation plate 27a is slid upward in FIG. At this time, the playback operation panel 24a
Since the lock by the locking member 55 is not released, and the playback operation plate 24a is being operated, the fast-forward operation plate 27a is in the operation position and the lock plate 5 is not released.
It is designed not to be locked to 0.

A locking piece 27e that engages with an end of the lock lever 54 is formed on one side of the fast-forward operation plate 27a. Therefore, when the fast-forward operation plate 27a is slid upward in FIG. 20 in the playback state, its locking piece 27e is engaged with the end of the lock lever 54, and the lock lever 54 is rotated clockwise in FIG. be moved. Then, lock lever 54
The second lock portion 54c of the lock lever 54 is disengaged from the lock portion 53d of the drive gear 53, the drive gear 53 is rotated clockwise in FIG. It is locked and stopped. Therefore, the head chassis 46 is returned to the stop position shown in FIG. 6, and the take-up lever 56 is returned to the neutral position shown in FIG. 11.

At this time, by operating the fast-forward operation plate 27a,
As previously explained in the fast-forward state, the fast-forward lever 58 is rotated counterclockwise in FIG.
The gear 58c is meshed with the gears 44c and 42d, respectively, and the tape is run therein in a fast forward state.

Then, when the operation of the fast-forward operation plate 27a is stopped, since the fast-forward operation plate 27a is not locked to the lock plate 50, it is returned to the original non-operation position, and the locking piece 27e is released from the end of the lock lever 54. be done. Then, since the playback operation plate 24a remains locked by the locking member 55, a rotation urging force is applied to the lock lever 54 in the counterclockwise direction in FIG. 20 by the spring 24c. Therefore, when the fast-forward operation plate 27a is returned, the lock lever 54 is rotated counterclockwise in FIG. As described above, the playback state is returned to, and the fast-forward state is maintained only while operating the fast-forward operation plate 27a in the playback state, and the playback state is returned when the operation of the fast-forward operation plate 27a is stopped. , a queue operation is performed.

Therefore, as described above, the lock lever 54 for locking the drive gear 53 for performing the soft touch operation is attached to the rewind and fast forward operation plate 2.
6a and 27a to perform the review and queue operations, there is no need to newly provide a separate member to perform the review and queue operations, and the structure is extremely organic, waste-free, and compact. This can effectively promote weight reduction. In this regard, the review and cue operation mechanism related to the conventional soft touch operation mechanism includes a drive gear for review and cue that is provided separately from a drive gear for playback, or a drive gear that is driven by the drive gear for playback. Since two drive members are used, one for regeneration and one for review and queue, the structure becomes complicated, which is contrary to the goal of miniaturization and weight reduction, and malfunctions are likely to occur.

However, as described above, by using the same lock lever 54 for playback, review, and queue use, the structure is simplified, suitable for reduction in size and weight, and malfunctions are less likely to occur.

Next, the detailed operation of the winding lever 56 will be explained. That is, this winding lever 56
As shown in FIGS. 12 and 17, the gear 56
d and 56c can be selectively meshed with the gears 42a and 43c, and the gear 56c can be constantly meshed with the fixed gear 44a at the center of rotation. It must be swung to the left and right. For this reason, the elongated hole 5 of the winding lever 56
6a is formed so that the take-up lever 56 can be guided so that the distance from the rotation center of the gear 56c to the rotation center of the gear 44a is always equal. The other elongated hole 56b of the winding lever 56
When the winding lever 56 is guided by the elongated hole 56a and swung left and right in FIGS. 12 and 17, the shaft 40b escapes so as not to impede the movement of the winding lever 56. It is formed like this. In other words, the path through which the take-up lever 56 moves between the two positions shown in FIGS. 12 and 17 is determined by the two elongated holes 56a and 56b. can.

Here, the movement path of this winding lever 56 is as follows:
It must be determined so as not to interfere with the following conditions: First, the gear 42a of the left reel stand 42
must have a large diameter in order to decelerate regeneration travel. Further, it is necessary to mesh the gear 43b of the right reel stand 43 with the gear 43b in order to rotate the reel in a direction corresponding to rewinding. Further, the driving force for rotating both reel stands 42 and 43 is provided by the motor 3.
This means that it must be obtained from the gear 44a of the capstan 44 (center capstan), which is rotated in one direction by the rotation of No. 5. The gears 56d and 56c are connected to the gears 42a and 43 without interfering with these conditions and with the gear 56c constantly meshing with the gear 44a without undue space constraints.
In order to selectively engage the winding lever 56, the winding lever 56 is guided by two elongated holes 56a and 56b.

Therefore, as mentioned above, both reel stands 42,
The winding lever 56 is guided by two elongated holes 56a and 56b so as to obtain a predetermined gear meshing relationship without interfering with the rotational speed and direction of the winder 43, the gear 44a of the capstan 44 at the center, etc. As a result, the structure is extremely simple and can be easily realized, and is particularly suitable for reduction in size and weight. Further, it is possible to realize stable tape running without causing malfunctions.

Next, the recording state will be explained. In FIG. 21, the recording operation element 23 is connected to the recording operation member 2.
It is attached to one end of 3b. This recording operation member 23b is supported by the main chassis 40 so as to be slidable in the directions of arrows C and D in FIG. 21, and is normally biased by a spring (not shown) in the direction of arrow D in FIG. 21, that is, in the return direction. has been done. The erasing head 23a is attached to one side of the recording operation member 23b. Therefore, along with the playback operator 24, the recording operator 23
When the recording/reproducing head 46b is operated, the erasing head 23a also moves forward and comes into contact with the tape.

Further, on one side of the recording operation member 23b,
A locking portion 23c is formed to be locked to the engaging portion 55a of the locking member 55. Here, the depth at which the locking portion 23c of the recording operation member 23b is locked with the engaging portion 55a of the locking member 55 is such that the locking portion 24g of the playback operation plate 24a is locked with the locking portion 55a of the locking member 55.
The depth is set to be shallower than the depth at which it is engaged with the engaging portion 55a.

Further, sloped portions 23d and 23e are formed on both sides of the upper end of the recording operation member 23b in FIG. 21, respectively, with vertical shifts in FIG. These inclined portions 23d and 23e are engaged with protrusions 23f and 23g formed on the main chassis 40, respectively. Therefore, when the recording operation member 23b is operated in the direction of the arrow C in FIG.
The upper part of the figure is tilted in the direction of arrow I in the figure.

Here, a locking piece 23h projecting leftward in the figure is formed at the upper part of the recording operation member 23b in FIG. This locking piece 23h is located above the engaging piece 23i formed on one side of the head chassis 46 in FIG. 21 when the recording operation member 23b is operated and tilted as described above. It is done like this. Further, one side of the head chassis 46 is engaged with the engaging member 55a of the lock member 55 when the head chassis 46 is slid upward in FIG. An inclined portion 23j that can be rotated counterclockwise in the figure is formed. The rotation of the locking member 55 in the counterclockwise direction in FIG. 21 by the inclined portion 23j releases the locking of the locking portion 23c of the recording operation member 23b, but the locking portion of the playback operation plate 24a is released. The lock of 24g is within a range that does not allow the lock to be released.

Here, it is assumed that the recording operation member 23 and the playback operation element 24 are operated together, and the recording operation member 23b and the playback operation plate 24a are respectively slid in the direction of the arrow C in FIG. The operation plate 24a is shown in a non-slided state). Then, as mentioned earlier, the regeneration operation plate 24a has its locking portion 24g locked with the locking member 5.
At the same time, the recording operating member 23b is also locked at its operating position by having its engaging part 23c engaged with the engaging part 55a of the locking member 55.

As described above, when the head chassis 46 is slid in the direction of arrow C in FIG. 21 due to the rotation of the drive gear 53, as shown in FIG.
The inclined portion 23j of the head chassis 46 engages with the engaging portion 55a of the lock member 55, and the lock member 5
5 in the counterclockwise direction in FIG. Therefore, the playback operation panel 24a remains locked by the locking member 55, and the recording operation member 23b is unlocked by the locking member 55. Therefore, the recording operation member 23b is about to be returned in the direction of arrow D in FIG.
Since the locking piece 23h of 3b is locked with the engaging piece 23i of the head chassis 46, the recording operation member 2
3b is held at the operating position, where the tape is run in a recording state.

Therefore, as described above, with both the recording and playback controls 23 and 24 being operated, the recording operating member 23b is first locked to the locking member 55, and when the head chassis 46 is slid, the head chassis 46 By locking the recording operation member 23b at the same time, a special member for locking the recording operation member 23b is not required, so the number of parts can be reduced, and the structure is simple and suitable for reduction in size and weight. be.

Also, the recording operation member 23b is moved to the head chassis 4.
By locking the device in the operating position by means 6, the quick review operation can be performed easily. This quick review operation means that when the rewind operator 26 is operated in the recording state, the recording operator 23 is returned to the non-operating position while the playback operator 24 remains locked in the operating position.
The tape is now rewound. When the operation of the rewind operator 26 is stopped, the tape is automatically run in a reproducing state, which is convenient when it is desired to immediately reproduce the recorded contents.

That is, in the recording state shown in Figure 22,
If the rewind operator 26 is operated, the first
As explained in the review state shown in FIG. 9, the head chassis 46 is slid in the direction of the arrow D in FIG. 22 and returned to its original position, so that the tape is run in the rewound state. At this time, the recording operation member 23b that is locked to the head chassis 46
is also returned to its non-operating position. Here, in the operation position of the recording operation member 23b, its upper end in FIG. 21 is tilted in the direction of the arrow I in the figure, and the locking piece 23h is opposed to the engagement piece 23i. By being returned to the operating position, the upper end in FIG. 21 is tilted in the direction opposite to the direction of arrow I in the figure.
The locking piece 23h is arranged not to face the engaging piece 23i. Therefore, even if the operation of the rewind operator 26 is stopped and the head chassis 46 is again slid in the direction of arrow C in FIG. 22, the recording operation member 23b remains in the non-operating position and the tape is run in the playing state. , this is where the quick review operation is performed.

Therefore, when the rewind operator 26 is operated in the recording state, the recording operating member 2
Since 3b is returned to the non-operating position,
The structure is extremely organic, and the quick review operation can be performed reliably and easily without waste.

Next, as shown in FIG. 23, the switch slider 51 is supported on the main chassis 40 so as to be slidable in the directions of arrows G and H in FIG. This switch slider 51 has an engaging portion 49 in which an engaging piece 51a protruding from one end is attached to an elastic contact piece 49c of the power leaf switch 49.
This is what is attached to g. As described above, the switch slider 51 is slid in the direction of the arrow G in FIG. The elastic contact piece 49c of the leaf switch 49 is brought into contact with the elastic contact piece 49d, and the motor 35 is energized and driven.

Here, an engaging piece 51b is provided on one side of the switch slider 51 in a protruding manner. One end portion of a switch slider lever 59 can be engaged with this engaging piece 51b. The switch slider lever 59 is formed into a substantially L-shape in plan, and its corner portion is fitted onto a shaft 59a protruding from the blind plate 41, so that it is rotatably supported. The other end of the switch slider lever 59 can be engaged with a locking portion 59b projecting from the head stand 46c.

Here, when trying to playback the tape,
When the playback operator 24 is operated, the drive gear 53 meshes with the gear 44c, as shown in FIG. At this time, since the power leaf switch 49 is turned on by the switch slider 51 that is linked to the operation of the playback operation plate 24a, the motor 35 is rotationally driven, thereby rotating the drive gear 53. Therefore, the head shear 46, the winding lever 56, etc. are moved to the positions shown in FIGS. 10 and 12, respectively, and the reproducing state is established. At this time, for example, as shown in FIG. 9, it is assumed that the stop/eject operator 25 is operated while the drive gear 53 is being rotated while meshing with the gear 44c. Then, the playback operation plate 24a is returned to the non-operation position, and accordingly, the switch slider 51 is also returned in the direction of arrow H in FIG. 23, and the power leaf switch 49 is about to be turned off.

However, as shown in FIG.
The drive section 53c of No. 3 is the cam section 46 of the head stand 46c.
When the drive gear 53 is further rotated clockwise in FIG. 23 from the state in which it is in contact with j, the head stand 46c is slid upward in FIG. Press the end of the lever 59 upward in the figure. Therefore, the switch slider lever 59 is rotated counterclockwise in FIG. 23, so the switch slider 51 is slid in the direction of arrow G in FIG. 23, and the power leaf switch 49 is held in the on state. be. Therefore, even when the playback operation plate 24a is in the non-operation position, the motor 35 continues to be energized and the drive gear 53 is stably rotated. However, at this time, since the regeneration operating plate 24a has been returned to the non-operating position, the locking portion 53d of the drive gear 53 is not locked by the second locking portion 54c of the lock lever 54, but is locked by the first locking portion. 54b and is stopped.

That is, in a state where the drive gear 53 is meshed with the gear 44c and is pushing the head chassis 46 upward in FIG. 23, even if the regeneration operation plate 24a is returned to the non-operating position, the switch remains unchanged until the head chassis 46 returns to the stop position. The power leaf switch 49 is kept in the on state by the slider lever 59, and the motor 35 continues to rotate.

Then, as described above, the drive gear 53 is connected to the gear 4.
By keeping the power leaf switch 49 in the ON state while the head chassis 46 is being pushed up by being engaged with the leaf switch 4c, the following effects can be obtained. That is, suppose that the power leaf switch 49 is turned off when the playback operation plate 24a is returned to the non-operating position with the drive gear 53 meshing with the gear 44c and pushing up the head chassis 46. Then, the drive gear 53 is stopped while being meshed with the gear 44c, and the head chassis 46 is also stopped in the middle of being pushed up. Without fixing this, the pinch roller 46
This means that the recording/reproducing head 46b and the recording/reproducing head 46b are stuck in a pinch roller insertion opening (not shown) or a head insertion opening (not shown) formed in the microtape cassette 52 and are stopped. Therefore, a serious problem arises in that the microtape cassette 52 cannot be taken out from the tape cassette storage section 12. In order to release such a state, the playback operation panel 24a must be pressed again.
Turn on the power leaf switch 49 by operating
The motor 35 must be energized and driven, which is inconvenient to operate.

However, by keeping the power leaf switch 49 in the on state while the drive gear 53 is engaged with the gear 44c and pushing up the head chassis 46, the drive gear 53 can rotate while pushing up the head chassis 46. This can solve the problem of the microtape cassette 52 being stopped and being unable to be taken out. In particular, since the switch slider lever 59 detects that the head chassis 46 has been moved and turns on the power leaf switch 49, the removal of the microtape cassette 52 is more effective. Further, since the switch slider lever 59 only transmits the moving force of the head chassis 46 to the switch slider 51, the structure is extremely simple and suitable for reduction in size and weight.

As described above, the switch slider lever 59 holds the switch slider 51 in a position where the power leaf switch 49 is turned on in conjunction with the movement of the head chassis 46. This is a characteristic part.

Next, in the microcassette tape recorder described here, when the tape reaches the end when the tape is running at a constant speed during recording and playback, the recording and playback controls 23 and 24 are automatically set to the non-operating position. Automatic stop mechanism for returning (hereinafter referred to as ASO mechanism)
is provided. That is, as shown in FIG.
For example, suppose that the playback operation plate 24a is operated to lock the lock member 55.
Then, as described above, the head chassis 46 is slid upward in FIG. 24, and the pinch roller 46
e is the tape 52d of the microtape cassette 52
The head 46 is pressed against the capstan 44 via the pre-recording head 46 (not shown in FIG.
b is brought into contact with the tape 52d. At the same time, the rotational force of the gear 44a of the capstan 44 is applied to the gear 56c,
The signal is transmitted to the left reel stand 42 via 56d and 42a, and the tape 52d is run in the direction of the arrow in FIG. 24, where the tape 52d is run in a reproducing state.

Here, the right reel stand 43 is rotatably supported not by the main chassis 40 but by one end of the ASO detection lever 60. The ASO detection lever 60 is rotatably supported by having its substantially central portion fitted onto a shaft 60a protruding from the main chassis 40. And this shaft 60a
This is the rotation axis of the gears 43b and 43c shown in FIG. 11 above. Also, above
A shaft 60b is provided protruding from the other end of the ASO detection lever 60. And, on this shaft 60b,
A substantially central portion of the ASO drive lever 61 is fitted, and the ASO drive lever 61 is rotatably supported. Here, the ASO detection lever 60 is
Between the locking part 60c formed at the other end and the through hole 60d formed in the main chassis 40,
By being engaged with a coiled spring 60e, it is urged to rotate counterclockwise in FIG. 24. Then, the 24th position of the ASO detection lever 60 is
Rotation in the counterclockwise direction in the figure is restricted to the position shown in FIG. 24.

Further, the ASO drive lever 61 has its shaft 6
A locking part 60f whose central part is wound around 0b and whose both ends protrude from the ASO detection lever 60 and the ASO
The drive lever 61 is biased to rotate clockwise in FIG. 24 by torsion springs 61b respectively locked to locking portions 61a protruding from the drive lever 61.
The rotation of the ASO drive lever 61 in the clockwise direction in FIG. 24 is restricted to the position shown in FIG.
A claw portion 61c formed in a substantially fan shape at one end faces the gear 44a. However, the above
When the ASO detection lever 60 is rotated counterclockwise in FIG. 24 by the action of the spring 60e, the engagement portion 61e of the ASO drive lever 61 is separated from the gear 44a and is not engaged with it. be.

A protrusion 61d is formed at the other end of the ASO drive lever 61 and can be engaged with an engaging portion 55b formed at the lower end of the lock member 55 in FIG.

In the playback state shown in FIG. 24, when the tape 52d reaches the end as shown in FIG. Through
The ASO detection lever 60 is rotated clockwise in FIG. 25 against the urging force of the spring 60e.
This is because, as is well known, the reel hubs 52a and 52b of the microtape cassette 52 are supported with some wobble relative to the casing of the microtape cassette 52, so the right reel stand 4
3 is movable within the wobbling range of the reel hub 52b. Then, when the ASO detection lever 60 is rotated clockwise in FIG. 25, the bite portion 61c of the ASO drive lever 61 meshes with the gear 44c.

Then, since the gear 44c is being rotated clockwise in FIG.
As shown in Figure 6, the torsion spring 61b
It is rotated counterclockwise in FIG. 26 against the urging force of. Therefore, the protruding portion 61d of the ASO drive lever 61 is engaged with the engaging portion 55b of the locking member 55, and the locking member 55 is rotated counterclockwise in FIG. 26. Then, the engaging portion 55a of the locking member 55 is disengaged from the locking portion 24g of the regeneration operation plate 24a, and the regeneration operation plate 24a is returned to the non-operation position, at which time automatic stopping is performed.

Furthermore, it goes without saying that the automatic stop operation as described above operates in the same way when the end point is reached in the recording state.

Therefore, according to the ASO mechanism as described above,
Detecting that the tape 52d has reached the end
Rotate the locking member 55 on the ASO detection lever 60 in the direction of unlocking the regeneration operation plate 24a.
Since the ASO drive lever 61 is attached, the structure is extremely organic and suitable for reduction in size and weight, and a reliable automatic stopping operation can be performed.

Next, as previously explained with reference to FIG. 5, the motor 35 and the power leaf switch 49 are attached to the sub-chassis 47. Therefore, as shown in FIG. 4, when the sub chassis 47 is attached to the main chassis 40,
A power leaf switch 49 is also attached together with the motor 35. In other words, the motor 35
and power leaf switch 49 are sub chassis 4
7 is integrated into a unit, so assembly work is easy. In this regard,
Conventionally, the power leaf switch 49 is independently screwed to the main chassis 40.
However, the power leaf switch 49 of the microcassette tape recorder is extremely slender in order to be small and lightweight. For this reason, if you attach other movable parts after screwing the power leaf switch 49 to the main chassis 40, the power leaf switch 49 may be accidentally screwed on while attaching these movable parts.
For example, if the elastic contact piece 49
There is a problem that c and 49d may be bent. In addition, after installing various movable parts on the main chassis 40, the power leaf switch 4
If the power leaf switch 49 is to be fixed with screws, the movable parts will get in the way and the installation work will be difficult, since the power leaf switch 49 is extremely small.

However, by attaching the power leaf switch 49 to the sub-chassis 47 to which the motor 35 is attached to form a unit, the power leaf switch 49 can be easily installed without damaging it. .

Further, as shown in FIG. 5, the sub chassis 47
A motor 35 is attached to each, and a printed wiring board 38 to which a pause changeover switch 29b and a tape running speed changeover switch 30 are respectively connected is also attached. Here, the pause changeover switch 29b operates to supply and de-supply battery power to the motor 35,
The tape running speed selector switch 30 supplies electric power to the motor 35 corresponding to running the tape 52d at standard speed (2.4 [cm/sec]) and half speed (1.2 [cm/sec]) during recording and playback. The governor circuit operates to control the battery power to correspond to the operation of the pause changeover switch 29b, the tape running speed changeover switch 30, and the semi-fixed variable resistors 38a and 38b, thereby controlling the motor 35. It is intended to supply That is, motor 3
Various switches and circuits used for rotation control of 5.
Since the motor 35 is attached to the sub-chassis 47 to form a unit, assembly work is facilitated, and size and weight reduction can be effectively promoted.

Also, the sub chassis 47 is replaced by the main chassis 40.
When the main chassis 40 is attached to the back cabinet 33 as shown in FIG. It is also possible to facilitate assembly work and to reduce the size and weight.

Next, as shown in FIG. 2, the printed wiring board 3
Semi-fixed variable resistors 38a and 38b connected to 8 for finely adjusting the tape running speed between standard time and half speed, respectively, can be adjusted from the outside via a battery storage section 39. . That is, as shown in FIG. 27, through holes 39b and 39c are formed in this battery storage portion 39 at positions corresponding to the semi-fixed variable resistors 38a and 38b, respectively. When finely adjusting the tape running speed, a driver or the like (not shown) is inserted through the holes 39b and 39c to operate the semi-fixed variable resistors 38a and 38b, respectively.

Therefore, a through hole 39 is provided in the battery storage portion 39 for operating the semi-fixed variable resistors 38a and 38b.
b, 39c, semi-fixed variable resistors 38a, 38 are formed on the outer surface of the cabinet 11.
Compared to forming a through hole for operating b.
The space on the cabinet 11 can be used effectively, and it is suitable for downsizing and weight reduction.
Further, since the battery storage section 39 is closed by the battery lid 39a, the through holes 39b and 39c are not visible from the outside, and the aesthetic appearance is not spoiled.

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

〔Effect of the invention〕

Therefore, as detailed above, according to the present invention, it is possible to reliably prevent malfunctions such as stopping the soft touch operation mechanism in the middle of operation with a simple configuration, and to effectively reduce size and weight. Therefore, it is possible to provide an extremely good tape recorder device which is particularly suitable for microcassette tape recorders.

[Brief explanation of drawings]

Fig. 1 is an external view showing a micro cassette tape recorder to which the present invention is applied, Fig. 2 is an exploded perspective view of the micro cassette tape recorder, and Fig. 3 is an exploded perspective view of the micro cassette tape recorder.
4 and 4 are perspective views showing the microcassette tape recorder mechanism section from the front and back sides, respectively, and FIG. 5 shows the motor of the same tape recorder mechanism section,
FIG. 6 is a perspective view showing the installed state of the power leaf switch and printed wiring board; FIG. 6 is a plan view showing the soft touch operating mechanism of the tape recorder mechanism; FIG. 7 is a detailed view of the drive gear that constitutes the soft touch operating mechanism. The plan view, FIGS. 8a and 8b are front and back views respectively showing details of the head stand constituting the same soft touch operating mechanism, and FIGS. 9 and 10 are respectively explanatory diagrams of the operation of the same soft touch operating mechanism.
The figure is a plan view showing the drive system of the reel stand of the tape recorder mechanism, Figure 12 is an explanatory diagram of the operation of the drive system, and Figures 13 and 14 show the soft touch operation mechanism changing from the playback state to the stop state. Fig. 15 is a plan view showing the tape cassette detection mechanism of the soft touch operation mechanism;
Figures 6a and 6b are explanatory diagrams of the operation of the tape cassette detection mechanism, Figures 17 and 18 are plan views showing the tape recorder mechanism in rewinding and fast forwarding states, respectively, and Figures 19 and 20 are diagrams showing the operation of the tape cassette detection mechanism. FIGS. 21 and 22 are plan views showing the review and queue states of the tape recorder mechanism, respectively; FIGS.
The figures show one embodiment of the tape recorder device according to the present invention, and FIG. 24 is a plan view showing the relationship between the head chassis and the switch slider of the tape recorder mechanism section.
5 and 26 are respectively explanatory diagrams of the operation of the ASO mechanism, and FIG. 27 is an exploded perspective view showing a state in which a means for finely adjusting the tape running speed is provided in the battery storage section. 11... Cabinet, 12... Tape cassette housing section, 13... Cassette lid, 14... Receiving frequency instruction section, 15... Function switch,
16...Speaker sound emitting unit, 17...Tape counter, 18...Reset button, 19...Built-in microphone, 20...Earphone jack, 21...
Jack for external microphone, 22... Tuning dial, 23... Recording operator, 24... Playback operator, 25... Stop/eject operator, 26...
...Rewind control, 27...Fast forward control, 28...
...Volume adjustment dial, 29...Pause operator,
30... Tape running speed selection switch, 31...
String, 32...Front cabinet, 33...Back cabinet, 34...Tape recorder mechanism section, 35...Motor, 36...Printed wiring board, 37
...Flexible printed wiring board, 38... Printed wiring board, 39... Battery storage section, 40... Main chassis, 41... Blindfold board, 42... Left reel stand, 4
3...Right reel stand, 44...Capstan, 45
...Guide pin, 46...Head shear, 47
...Sub chassis, 48...Flywheel, 4
9...Power leaf switch, 50...Lock plate,
51... Switch slider, 52... Micro tape cassette, 53... Drive gear, 54... Lock lever, 55... Lock member, 56... Winding lever, 57... Tape cassette detection lever, 5
8...Fast forward lever, 59...Switch slider lever, 60...ASO detection lever, 61...
ASO drive lever.

Claims (1)

[Claims] 1. A head chassis on which a head is mounted and supported so as to be movable between first and second positions for making the head non-contact and contact with the tape; a switch for energizing; a rotating body to which the rotational force of the motor is transmitted in conjunction with the operation of the tape constant-speed running operation member; and the rotational force of the rotating body moves the head chassis to the first and second in a tape recorder device having a drive mechanism for moving between the positions of the tape recorder, in which the tape recorder is moved from the first position in conjunction with the movement of the head chassis through an interlocking member that engages with the head chassis. The switch is provided with a holding member that holds the switch at an operating position, and even if the tape constant speed running operating member is set to a non-operating state during rotation of the rotating body, the switch is not operated until the rotating body reaches a predetermined rotational position. A tape recorder device characterized in that the motor is driven by electricity.