JPS588059B2 - Kirokusai Seisouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording and reproducing apparatus that records signals on a recording medium and/or reproduces recorded signals.

Among such recording and reproducing devices, tape recorders, for example, have recently become significantly smaller and lighter.

By making such a tape recorder powered by batteries, it can be used in a wide range of locations, and can be carried and used not only indoors but also outdoors. became.

However, in tape recorders that are powered by batteries, the batteries sometimes run out of power.
There were inconveniences in that important information could not be recorded and it could not be reproduced when necessary.

The present invention has been made to overcome these problems, and includes: (a) a recording medium drive mechanism for driving a recording medium; (b) a recording medium drive mechanism for driving a recording medium;
A recording medium driving motor that drives this recording medium driving mechanism by its output; C. A recording and/or reproducing circuit; d. Manual operation means for manually rotating the motor to generate electricity; e. The motor and the recording medium. Clutch means for disconnecting and disconnecting from the drive mechanism, and when the recording/reproducing device is operated by the manual operation means, the clutch means is disconnected and the manual operation means connects the recording medium drive mechanism. The recording medium 1 is driven by the manual operating means, and the electric power generated by the recording medium 1 driving motor rotationally driven by the manual operation means is supplied to the recording and/or reproducing circuit.

Therefore, if the present invention is applied to, for example, a tape recorder with a built-in battery, when the battery is discharged, the tape recorder can be driven by the manual operation means to perform predetermined recording and/or reproduction.

An embodiment in which the present invention is applied to a microcassette tape recorder will be described below with reference to the drawings.

This micro cassette tape recorder is a tape recorder constructed into an ultra-small pocket size, and as shown in FIG. 1, the top surface of the main body 1 is equipped with a cassette for storing a micro cassette 2 containing a magnetic tape. A speaker 4 is provided on the side of the cassette mounting portion 3 in which a portion 3 is formed.

A dry battery (not shown) is built into the main body 1, and the battery drives the magnetic tape in the microcassette 2 through a motor and tape drive mechanism, and also slides into contact with the magnetic tape. Current is supplied to the recording/reproducing head and the erasing head via an amplifier circuit to perform predetermined recording and reproduction.

This tape recorder is equipped with a gear box 5 as a separate accessory for manually driving the tape recorder when the battery has finished discharging.

A handle 6 is provided on the side of the gearbox 5.

When the gear box 5 is attached to the tape recorder main body 1 and the handle 6 is rotated, the tape recorder is driven by the energy of the manual operation.

That is, as shown in FIG. 2A, a gear 7 is fixed to the handle shaft, and the rotation is transmitted from this gear 7 to the drive side portion 11a of the magnetic clutch 11 via gears 8, 9, and 10. has been done.

Moreover, at this time, 60 rotations of the handle is caused by the gears 8 and 9.
．． By increasing the speed by two steps of No. 10, the amount is increased approximately 40 times and is transmitted to the first drive side portion 11a of the clutch 11.

At the same time, the rotation of the handle 6 is caused by gears 12, 13, 14, 1.
5, 16 to the drive side portion 17a of the magnetic clutch 17, and at this time, these gears 7, 1
By increasing speed in 3 stages of 2, 13, 14, 15, and 16,
It is configured to be transmitted to the drive side portion 17a of the clutch 17 at a rate of about 120 times.

Further, a first pressing piece 18 and a second pressing piece 19, which protrude from the joint surface with the tape recorder main body 1, are fixed to the gear box 5.

On the other hand, in the tape recorder main body 1, a driven side portion 11b of the magnetic clutch 11 and a driven side portion 17b of the magnetic clutch 17 are arranged side by side on the side end surface of the main body 1.

A driven portion 1lb of the clutch 11 is fixed to a shaft 20, and a gear 21 is fixed to the shaft 20.

This gear 21 constitutes a gear train together with idler gears 22 and 23.

A driven portion 17b of the clutch 1γ is fixed to an output shaft 25 of a motor 24 which also serves as a generator.

A pulley 26 is further rotatably attached to the output shaft 25.

A gear 27 is integrally formed in the boss portion of the pulley 26, and an annular groove 28 is formed in the boss portion of the pulley 26 between the pulley groove and the gear 27.

The pulley 26 and gear 27 are connected to the output shaft 2 of the motor 24.
5, it is configured to rotate freely with respect to the output shaft 25 and also to be slidable in the direction of the axis of this shaft 25.

The pulley 26 and gear 27 are urged toward the gear box 5 by a coil spring 29.

Moreover, the end surface 26a of this pulley 26 on the magnetic clutch 1γ side is magnetized, and this magnetic clutch 1
When the pulley 26 is attracted to the driven side portion 17b of No. 7, the pulley 26 rotates together with this driven side portion 17b.

That is, the pulley 26 and the driven portion 17 of the clutch 1γ
A magnetic clutch 35 is formed by b.

Therefore, normally (when the tape recorder is driven by a battery), the rotation of the motor 24 is transmitted to the pulley 26 via the shaft 25 and the driven shaft portion 17b.

As the motor 24, a permanent magnet rotating brushless motor is used.

This is preferable since there are fewer failures even when the motor 24 is used as a generator, as will be described later, since there are no brushes.

A belt 30 is wrapped around the pulley 26.

This belt 30 is used to drive the tape by driving a tape drive capstan and a reel shaft (not shown).

The tip of a switching lever 32 that is rotatably supported around a fixing pin 31 is engaged with an annular groove 28 formed in the boss portion of the pulley 26 .

A pressed portion 33 is integrally formed on this switching lever 32 in a direction perpendicular to this lever 32 .

When this pressed portion 33 is pressed by the first pressing piece 18 formed on the gear box 5, it causes the lever 32 to rotate slightly clockwise in FIG. As shown in the figure, the pulley 26 and gear 27 are pressed against the coil spring 29 toward the motor 24 (left side in Figure 2B) to disconnect the clutch 35 and engage the gear 27 and the idler gear 23. It is.

Furthermore, a switch operation piece 34 is arranged on the side of this pressed part 33.

When this switch operation piece 34 is pressed by the second pressing piece 19 formed on the gear box 5, it switches a group of switches to be described later, so that the tape can be driven manually.

Next, the above power transmission mechanism is shown in block form as shown in Fig. 3.

That is, the gear box 5 is equipped with a handle 6 and is connected to the tape recorder main body 1 via magnetic clutches 11 and 17.
The output shaft 25 of the motor 24, which is configured to be connectable and disconnectable with the clutch 3 and housed in the tape recorder main body 1, is connected to the clutch 3.
5 and a transmission 36 to drive a cab stan and a take-up reel.

The positive side of the battery 40 built into the tape recorder main body 1 is connected to the control circuit 42 via a power switch 68 and a switch 41 which is opened and closed by the second operation piece 19.

The control circuit 42 is configured to receive a rotor position detection signal and speed information from a tachometer or the like from the motor 24, and its three output terminals are connected to the three-phase coil 4 of the motor 24.
3, 44, 45 (see FIG. 4).
, 47.48.

Further, the three output side terminals of the drive circuit are connected to a changeover switch via a series circuit of a switch 49 and a diode 50, a series circuit of a switch 51 and a diode 52, and a series circuit of a switch 53 and a diode 54, respectively. 55 is connected to one fixed contact 56 .

The other fixed contact 57 of this switch 55 is connected to the positive side of the battery 40 via a power switch 68, and the movable contact 58 receives a recording signal to be applied to the recording/reproducing head and a reproduction signal from the recording/reproducing head, respectively. It is connected to a recording and reproducing circuit 59 that includes an amplifier circuit for amplification and other circuits necessary for recording and reproducing.

The switches 49 , 51 , 53 and the changeover switch 55 are all operated by the second suppressing piece 19 via the switch operation piece 34 .

That is, the second suppressing piece 19 causes the switch operating piece 34 to
When is pressed, switches 49, 51 and 53 close together,
The movable contact 58 of the changeover switch 55 is configured to fall toward the fixed contact 56 side.

The drive circuit 46. 47. 48 are switching transistors 61, 62, and 63, respectively, as shown in FIG.
The bases of these transistors each receive a voltage 6 that is 120 degrees out of phase from the control circuit 42.
By sequentially supplying transistors 4, 65, and 66, the switching transistors 61, 62, and 63 are made conductive, thereby causing current to sequentially flow through the coils 43, 44, and 45.

Next, the operation of the tape recorder with the above configuration will be explained.

First, a normal state, that is, a case where the tape recorder is driven by the battery 40 will be described.

In this case, the gear box 5, which is a separate accessory, is used separately from the tape recorder main body 1.

At this time, as shown in FIG. 2A, the pressed portion 33 and switch operation piece 34 of the switching lever 32 are the first pressing piece 18 and the second pressing piece 19 provided on the gear box 5, respectively.
It is separated from.

Therefore, the clutch 35 is in the connected state, and the pulley 2
6 is in a state where it can rotate together with the driven side portion 17b of the clutch 17 which is fixed to the output shaft 25 of the motor 24.

Further, switch 41 is closed, and switches 49 and 5 are closed.
1,53 are open.

At the same time, the movable contact 58 of the switch 55 is tilted toward the fixed contact 57 side.

When the power switch 68 is turned on in this state, the control circuit 42
Power is supplied to the drive circuit 46 . 47 and 48 are sequentially supplied with voltage, whereby the switching transistors 61, 62, and 63 are sequentially switched to 1 in accordance with the rotation of the motor 24.
The coil 43 becomes conductive at a rate of 20 degrees, and as a result, the coil 43
, 44, 45, and the motor 24 rotates.

The rotation of this motor 24 is taken out by its output shaft 25.

Therefore, the driven portion 17b of the clutch 17, which is fixed to this output shaft, is driven one rotation.

Moreover, at this time, the clutch 3 together with this driven side portion 17b
Since the clutch 35 is in a connected state, the pulley 26 constituting the clutch 5 rotates together with the driven portion 17b.

The rotation of the pulley 26 rotates a capstan (not shown) and a take-up reel via the belt 30, thereby driving the tape to travel.

Furthermore, at this time, since the gear 27 integrated with the pulley 26 is not meshing with the idler gear 23, the idler gears 23, 22, the gear 21, and the driven portion 11b of the clutch 11 do not rotate. Since the movable contact 5B and the fixed contact 57 are in contact with each other, power is supplied to the amplifier 59 from the battery 40.

Therefore, this recording/reproducing circuit 59 is in an operating state, so that desired recording or reproduction can be performed.

Next, a case will be described in which the tape recorder is manually driven after the battery 40 has finished discharging.

In this case, a gear box 5, which is a separate accessory, is connected to the tape recorder main body 1 as shown in FIG. 2B.

The tape recorder main body 1 and the gear box 5 are connected by a connecting means (not shown) in the state shown in FIG. 2B.

At this time, the magnetic clutches 11 and 17 are attracted to each other by magnetic force and are in a connected state.

Also, since the first pressing piece 18 presses the pressed part 33, the switching lever 32 rotates clockwise in FIG. 2A along the output shaft 25.

Therefore, the pulley 26 separates from the driven side portion 17b of the clutch 17, and the clutch 35 becomes in a disengaged state.

At the same time, the gear 27 meshes with the idler gear 23 due to the movement of the pulley 26 in the same direction.

Furthermore, by connecting the gear box 5 to the tape recorder main body 1, the second pressing piece 19 presses the switch operation piece 34, and therefore the switch 41 is opened and the switches 49, 5 are opened.
1,53 is closed.

Furthermore, the movable contact 58 of the changeover switch 55 falls toward the fixed contact 56 side.

In the above state, when the handle 6 provided in the gear box 5 is rotated by hand, the rotation of the handle 6 is accelerated by the drive portion 11a of the clutch 11 via the gears 7, 8, 9, and 10. communicated.

Moreover, since the clutch 11 is in the connected state at this time, the driven side portion 11b of the clutch 11 also rotates.

This rotation of the driven portion 11b is transmitted to the gear 27 via the gear 21 and the idler gears 22 and 23.

Therefore, the pulley 26 formed integrally with this gear 27
is rotationally driven, and thereby a cab stan and a take-up reel (not shown) are rotationally driven via the belt 30.

At this point, the tape is driven to run.

At the same time, the rotation of the handle 6 is caused by gears 7, 12, 13, 14,
It is transmitted to the drive side portion 17a of the clutch 17 via 15 and 16.

Since the clutch 17 is in the connected state as described above, the driven portion 17b is also rotationally driven.

For this reason, the output shaft 25 of the motor 24, which also serves as a generator, rotates, and thus the rotor of the motor 24 is rotationally driven.

Note that a boob 26 is fitted to this output shaft 25,
At this time, both are rotatable relative to each other, and the handle 6 is rotated, for example, at 1r. p. m. If the output shaft 25 is rotated at, for example, 8000r. The pulley 26 rotates at 250 rpm, for example. p. m. It is configured to rotate.

When the output shaft of the motor 24, which also serves as a generator, is driven to rotate, the motor 24 operates as a generator, and as shown in FIG.
, 70, 71 occur.

These electromotive forces 69, 70, and 71 are induced with a phase difference of 120° of the rotation angle of the rotor of the motor 24.

These electromotive forces 69, 70, and 71 are rectified by diodes 50, 52, and 54, respectively, and only the positive side portion is taken out, which is superimposed and supplied to the power supply terminal of the recording/reproducing circuit 59 as a power supply voltage. can be recorded and played back.

If the superimposed voltage applied to the recording/reproducing circuit 59 described above is not smooth, a smoothed voltage may be supplied to the recording/reproducing circuit 59 via an integrating circuit.

Normal recording and reproducing operations can be performed as described above, but this tape recorder also allows fast forwarding and rewinding by manual operation.

In these modes, since the tape is separated from the head, there is no need to supply power to the recording/reproducing circuit 59.

Therefore, in conjunction with the switching of these modes, the switch 49
, 51.53.

Although the present invention has been described above with reference to embodiments, the present invention provides a recording/reproducing device in which when the battery has finished discharging, the recording medium is driven via the recording medium drive mechanism by a manual operation means, and the recording medium is normally driven. The motor used to drive the recording medium is used as a generator, and the motor is rotated by the above-mentioned manual operation means, and the induced power is used to supply power supply voltage to the recording and/or reproducing circuit. It is something.

Therefore, according to the present invention, when the battery built in the recording and reproducing device has finished discharging and there is no spare battery, the recording and reproducing device can be driven by the manual operation means. Therefore, the portability of the recording/reproducing device is increased.

Furthermore, when this recording/reproducing device is driven by a manual operating means, the recording medium is driven by mechanically converting the energy obtained by the manual operating means, so the motor normally used to drive the recording medium is can be used as a generator, and there is no need to provide a generator separate from the motor.

In addition, this recording/reproducing device directly utilizes the energy obtained by manual operation means, and does not have any kind of energy storage device, such as a battery, to be taken out later. When the battery has finished discharging without any time delay, it is possible to immediately switch to the manual operating means and drive the recording/reproducing device.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a microcassette tape recorder, in which FIG. 1 is a perspective view thereof, and FIG. 2A is a cross-sectional plan view of the main part in a normal use state.
Figure 2B is a cross-sectional plan view of the main part in a state in which it is used by manual operation means, Figure 3 is a block diagram showing the power and electric power transmission system, Figure 4 is a circuit diagram of the main part, and Figure 5 is the motor. FIG. 4 is a waveform diagram of induced voltage when used as a generator. In the symbols used in the same drawing, 5 is a gear box, 6 is a handle, 11 is a magnetic clutch, 17 is a magnetic clutch, 24 is a motor that also functions as a generator, 2
6 is a pulley, 30 is a belt, 35 is a clutch, 36 is a transmission, and 59 is a recording/reproducing circuit.

Claims (1)

[Scope of Claims] 1. A recording and reproducing device configured to record signals on a recording medium and/or reproduce signals recorded on a recording medium, comprising: a. a recording medium drive mechanism that drives the recording medium; , b a recording medium drive motor that drives this recording medium drive mechanism with its output; C a recording and/or reproducing circuit; d a manual operation means for manually rotating the motor to generate electricity; e the motor and the Clutch means for disconnecting and disconnecting from the recording medium drive mechanism, and when the recording and reproducing apparatus is operated by the manual operation means, the clutch means is disconnected and the manual operation means connects the recording medium drive mechanism. A recording/reproducing apparatus configured to drive the recording medium through the recording medium and supply electric power generated by the recording medium driving motor rotationally driven by the manual operation means to the recording and/or reproducing circuit.