JPH0664776B2 - Tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention has three tape mechanisms for continuous reproduction,
The present invention relates to a tape recorder that can be simultaneously dubbed.

2. Description of the Related Art In recent years, cassette tape recorders having a plurality of mechanisms are increasing in order to meet the needs of consumers.

Hereinafter, an example of a conventional tape recorder capable of continuous reproduction will be described with reference to the drawings, which has two tape mechanisms.

FIG. 3 shows a conventional control circuit of a motor of a tape recorder having two tape mechanisms configured to be continuously reproducible.

In FIG. 3, M _A is _a motor for driving the first mechanism, S _a is a leaf switch which is turned on in association with the play button of the first mechanism, and S _b is turned on in association with a play button of the second mechanism. Leaf switch, M _b is second
Mechanism drive motor, Q ₃ is the motor control transistor of the motor M _b, Q ₂ is the control transistor of the transistor Q _3, Q ₁ is controlled to transmit the driving state of the motor M _a transistor Q ₂ Transistor, R ₁₁
The motor M transistors Q ₁ a driving condition of _a, Q _2, Q ₃ is transmitted to the control circuit of the motor M _b resistor made of, R _12, R ₁₃ is the resistance for the base bias of the transistor Q _1, R ₁₄ is transistor Collector resistors R ₁₅ and R ₁₆ , which generate a voltage corresponding to the operating state of Q ₁ , are base bias resistors of the transistors Q ₂ and Q ₃ , respectively. A indicates a circuit unit included in the first mechanism, and B indicates a circuit unit included in the second mechanism.

The continuous reproducing operation of the tape recorder configured as described above will be described.

First, press the play button of the first mechanism, the leaf switch S _a which is turned on in conjunction with the play button is turned on, power is supplied to the motor M _a of the first mechanism for driving the first The mechanism is in the replay state. Next, when the reproduction button of the second mechanism is pushed in, the leaf switch S _b is turned on in conjunction with the reproduction button, and the power supply voltage is applied to the transistors Q ₁ and Q ₃ , but the leaf switch of the first mechanism is pressed. since S _a and the power supply voltage to the transistor Q ₁ through the resistor R ₁ is applied, the transistor Q ₁ base of the transistor Q _1, the emitter is the same potential
Is inactive. Therefore, a bias is not applied to the base of the transistor Q ₂ , and this transistor Q ₂ is also in the non-operating state, so that the high impedance is maintained between the collector and the emitter. As a result, the transistor Q _{3 is} also deactivated, and the motor M _b of the second mechanism remains stopped.

Here, the reproduction operation of the first mechanism is released first laser off switch S _a in conjunction with the play button mechanism is turned off, it is applied through resistor R ₁₁ to the motor control circuit of the second mechanism Voltage disappears, and an appropriate base bias is applied to the transistor Q ₁ by the resistors R ₁₂ and R ₁₃ , so that the transistor Q ₁ is in an operating state. Thus, through the emitter of the transistor Q _1, the collector, the resistance R ₁₄ voltage of approximately V _cc to occur, the resistance transistors Q ₂ through R ₁₅ is an operating state, it takes appropriate bias to the transistor Q ₃ via the resistor R ₁₆ this The transistor Q ₃ is _activated , a voltage is applied to the motor M _b of the second mechanism, and the second mechanism starts the reproducing operation.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, using the above-mentioned configuration, the third mechanism is added to have three mechanisms, and when three tapes are continuously reproduced, the first mechanism is used. It is necessary to control the motor of the second mechanism by controlling the driving state of the motor of the mechanism, and control the motor of the third mechanism by controlling the driving states of the motors of the first and second mechanisms. That is, a control circuit similar to the circuit B is required for controlling the motor of the added third mechanism, and further, the driving states of the motors of the first and second mechanisms are changed to the motor control circuit of the third mechanism. Therefore, a complicated control circuit is required for the reproduction operation of three continuous windings, which causes a decrease in operational reliability and a significant increase in cost due to an increase in parts. Was.

Means for Solving the Problems In order to solve the above problems, the tape recorder according to the present invention has a first motor for driving three mechanisms of first, second, and third, and first and second mechanisms. And a second motor for driving a third mechanism, and the interlocking mechanism releases the push-lock state of the pause button of the second mechanism by pushing the play button of the first mechanism or moving the play button when returning. And a control circuit for controlling the driving state of the second motor according to the detection signal according to the driving state of the first motor and the operating state of the third mechanism operating button.

Function The present invention shares the motors of the first and second mechanisms,
By returning the pause button of the second mechanism in synchronization with the movement of the play button of the first mechanism, the first mechanism and the second mechanism are not used at all.
Of the first and second mechanism drive motors is electrically transmitted to the motor drive control circuit of the third mechanism, thereby enabling the first and second mechanisms to operate.
The mechanism of and the third mechanism are linked. That is, three consecutive reproductions by the first mechanism, the second mechanism and the third mechanism or simultaneous dubbing from the first mechanism to the second and third mechanisms are made possible by the above simple structure.

Embodiment A tape recorder according to an embodiment of the present invention will be described below with reference to the drawings.

In FIG, 1, 2 and 3 first, respectively, show a second, third tape _{mechanisms, 1 a ~1 e, 2 a} ~2 f, 3 a ~
3 _f are a pause button, a stop button, a fast forward button, a rewind button, a play button, and a record button,
These are shown in schematic form. M ₁ is the first and second
Is a first motor for driving the first and second mechanisms, and each mechanism 1, 2 is adapted to be driven by a transmission means such as a belt, and M ₂ is a _second motor for driving the third mechanism 3. Is the motor of. Here, the first mechanism 1
A mechanical interlocking mechanism 4 is configured between the playback button 1 _e of the second mechanism 2 and the pause button 2 _a of the second mechanism 2 to lock the push-lock state of the pause button 2 _a by pushing the playback button 1 _e . Alternatively, it can be released by detecting the movement of the lever when returning. That is,
This means that the pause button of the second mechanism 2 can be unlocked at the time of transition from the stop-to-play state or the play-to-stop state of the first mechanism 1.

S _1-1 and S _1-2 are leaf switches which are turned on and off in conjunction with the reproduction button 1 _e of the first mechanism 1, one terminal of which is both connected to the V _cc power source, and S _{2 -1} , S
_2-2 in conjunction with the play button 2 _e of the second mechanism 2 on a leaf switch off, S ₃ is turned on in conjunction with the third mechanism 3 play button 3 _e, leaf switch to OFF, RS ₁ and RS ₂ are recording / playback changeover switches of the second and third mechanisms 2 and 3, respectively. Of these switches, the play button _1e of each mechanism 1-3
Leaf switch S ₁ ~S ₃ to be linked to the ~3 _e is, there is a play button 1 _{e ~3 e} is pushed to the ON state, recording and playback change-over switch RS _1, RS ₂ Recording button 2 _f, 3 _f is return It is in the playback position because it is in a state. Then, these switch groups are in the connected state as shown in the figure, and the control signal corresponding to the drive state of the first motor M ₁ and the operation state of the operation buttons of the second and third mechanisms 1 and 2 is supplied. It is supplied to the control circuit 5 described later.

The control circuit 5 controls the drive of the second motor M _{2, and the} drive is controlled by the drive state of the first motor and the states of the operation buttons of the second and third mechanisms 2 and 3. . The control circuit 5 includes a motor control transistor Tr _1, the control transistor Tr of the transistor Tr _1
2 , a diode D connected to the power source side, and resistors R _{1 to} R ₅ connected to give an appropriate bias to both transistors Tr ₁ and Tr ₂ so as to operate. The transistor Tr ₂ controls the transistor Tr ₁ during continuous reproduction, and the transistor Tr ₁ alone controls the _second motor M ₂ during dubbing.

The continuous reproducing operation will be described below with reference to FIG.

First, when the reproduction button 1 _e of the first mechanism 1 is pressed, the drive motor of the first mechanism 1 is driven by the leaf switches S _1-1 and S _1-2 which are turned on in synchronization with the reproduction button 1 _e. Power is supplied to M ₁ and the first mechanism is in the regenerative state. The next second mechanism 2 of the temporary stop button 2 Play button at _a by you push the mechanism 2 2 _e that the pushing in this state, the second mechanism 2 becomes the reproduction waiting state. And subsequently third mechanism 3 play button 3 _e of pushing, leaf switch S ₃ interlocked with the playback button 3 _e is turned on, the third mechanism drive motor M ₂ and the control circuit 5 of 3 Power is supplied. However, since there the playback button 1 _e or 2 _e at I pushed, V _cc power supply from the control voltage through the leaf switch S _1-1 or recording PLAY switch RS ₁ and the leaf switch S _2-1 is in the control circuit 5 a diode D since supplied through the base potential of the transistor Tr ₂ is kept higher than the emitter potential, the transistor Tr ₂ becomes non-operation, thus the bias voltage to the transistor Tr ₁ is also not applied, the transistor Tr ₁ becomes inoperative , Second
The motor M ₂ of No. 3 continues to be stopped, so that the third mechanism 3 also enters the reproduction standby state.

Here, when the tape mounted on the first mechanism 1 is the end and the reproduction button 1 _e is released, the leaf switches S _1-1 and S _{1-2 of} the first mechanism 1 are turned off. The interlocking mechanism 4 also releases the pause button _2a of the second mechanism 2 in association with the play button _1e .

By the way, in the second mechanism 2, the reproduction button 2 _e is still pushed in, and V _cc is supplied to the first motor M ₁ through the leaf switch S _2-1 and the recording / reproduction changeover switch RS ₁ . Mechanism 2 of 2 is the first mechanism 1
Then, the playback operation starts. At this time, the third mechanism 3 is
The stop state is continued by the control voltage supplied to the diode D of the control circuit 5 of the second motor M ₂ through the recording / reproducing changeover switch RS ₁ and the leaf switch S _{2-1 of} the second mechanism 2. Next, the tape loaded on the second mechanism 2 becomes the end, and the play button 2 _{e of the} above mechanism 2
Is released, the leaf switches S _2-1 and S _2-2 are turned off and the second mechanism 2 is also stopped. At this time, the control voltage supplied to the diode D through the recording / reproducing changeover switch RS ₁ and the leaf switch S _2-1 is also cut off, and the transistor Tr ₂ is appropriately biased by the resistor R ₅ ,
This transistor Tr ₂ is turned on, a voltage of about the power supply voltage V _cc is generated from the collector of the transistor Tr ₂ via the recording / reproduction changeover switch RS ₂ to the series resistance circuit of the resistors R ₁ and R ₂ , and the transistor Tr ₁ is also in the operating state. , The second motor M ₂ is driven, and this driving brings the third mechanism into a reproduction state.

As described above, according to the present embodiment, first, the driving force of the first mechanism 1 and the second mechanism 2 is set to the one motor M.
Shared by _1, from the state the second mechanism 2 of the temporary stop button 2 _a and first playback button 1 _e mechanism 1 are both pushed, the first mechanism 1 play button 1 _e is released The interlocking mechanism 4 mechanically releases the temporary stop button _2a of the second mechanism 2 in conjunction with the above.

Further, a control voltage corresponding to the driving state of the first and second mechanism driving first motors M ₁ is detected and applied to the control circuit 5 of the third mechanism driving second motor M _2. As a result, the tape can be continuously reproduced by the first, second, and third mechanisms.

Next, description will be given with reference to FIG. The figure is a diagram of a standby state for simultaneous dubbing of two rolls.

In the figure, it is different from the first figure, the recording button and the second mechanism 2 of the Record button 2 _f third mechanism 3 _f
Is pushed in and the first mechanism 1 is in a stopped state. In connection with this, the leaf switches S _1-1 and S _1-2 are off, and the recording / playback changeover switches RS ₁ and RS ₂ are on the recording side. Is the same as that shown in FIG. 1.

Regarding the tape recorder configured in this way, the following 2
The simultaneous winding dubbing operation will be described. First, press the record button _3f and play button _3e of the third mechanism 3,
Then through the leaf switch S _3, although the second motor M ₂ to the power source V _cc is supplied, not bias is applied to the base of the transistor Tr _1, the third mechanism remains stopped, the recording standby state Become. Second mechanism 2
Pushing the pause button 2 _a of the further record button 2 _f and playback button 2 _e the pushing, leaf switch S _2-1, S
_2-2 is turned on, and the regular power supply voltage V _cc is applied to the first motor M ₁ through the leaf switch S _2-2 , but the second mechanism 2 is also put into the recording standby state by the pause button 2 _a . Become. FIG. 2 shows this state.

In this state, when the play button _1e of the first mechanism 1 is pushed in, the leaf switch S _1-1 of the first mechanism 1 is pushed.
And S _1-2 are turned on, and the first mechanism 1 starts the reproducing operation. At the same time, the pause button of the second mechanism 2 is also released by the interlocking mechanism 4, the second mechanism 2 enters the recording state, and the leaf switch S _1-1 and the recording / playback change-over switch RS _{2 of} the third mechanism. through, the bias voltage to the base of the transistor Tr ₁ is applied, since the second motor M ₂ is driven, the third mechanism 3 is also in recording mode.

As described above, according to this embodiment, the first mechanism 1
And the driving force of the second mechanism 2 is shared by one motor M ₁ , and when the pause button 2 _a of the second mechanism 2 is pushed, the reproduction button 1 _e of the first mechanism 2
When the button is pushed in, the temporary stop button of the second mechanism 2 is mechanically released in conjunction with that, and the first motor M ₁ for driving the first and second mechanisms is set to the driving state. By applying the corresponding control voltage to the control transistor Tr ₁ of the second motor M ₂ for driving the third mechanism, the second and third mechanisms synchronize with the reproduction start of the first mechanism 1, It is possible to start recording and dubbing two volumes at the same time.

In addition, in the above description, the three-roll continuous reproduction has been described.
It goes without saying that it is possible to continuously reproduce two volumes, that is, from the first mechanism to the second mechanism, or from the second mechanism to the third mechanism, or from the first mechanism to the third mechanism. Nor.

In the dubbing, two volumes were simultaneously dubbed, but normal dubbing, that is, the first mechanism to the second mechanism, the second mechanism to the third mechanism, or the first mechanism to the first mechanism, It goes without saying that dubbing is possible for the 3rd mechanism.

EFFECTS OF THE INVENTION As described above, the present invention has three mechanisms including two motors, a first motor for driving the first and second mechanisms and a second motor for driving the third mechanism. The play button of the first mechanism is pushed or the play button of the pushed first mechanism is released while the pause button of the second mechanism is pushed. , Has a mechanism in which the pause button of the second mechanism that has been pushed in is mechanically released in conjunction with these two operations,
Moreover, by applying the control signal according to the driving state of the first and second mechanism driving motors to the control circuit of the third mechanism driving motor, the first, second and third mechanisms can be realized. It is possible to obtain an excellent tape recorder capable of performing a 3-roll continuous reproduction operation and a 2-roll simultaneous editing operation from the tape mounted on the first mechanism to the tape mounted on the second and third mechanisms. It is a thing.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a motor control circuit at the time of continuous reproduction operation of the tape recorder according to the first embodiment of the present invention, and FIG. 2 is at the time of simultaneously editing two volumes of the tape recorder according to the second embodiment of the present invention. FIG. 3 is a circuit diagram of the motor control circuit of FIG. 3, and FIG. 3 is a circuit diagram of the motor control circuit in the continuous reproducing operation of the tape recorder according to the conventional example. 1 ... First mechanism, 2 ... Second mechanism, 3
...... third mechanism, 4 ...... interlocking mechanism 5 ...... control circuit, M ₁ ...... first motor, M ₂ ...... second motor,
1 _e , 2 _e , 3 _e ... Play button, 1 _a , 2 _a , 3 _a ... Pause button.

Claims (3)

[Claims] 1. A first mechanism, a second mechanism, and a third mechanism,
A first motor for driving the first and second mechanisms and a second motor for driving the third mechanism are provided, and the second mechanism is driven by pushing the reproduction button of the first mechanism or moving it at the time of returning. In addition to providing an interlocking mechanism that releases the push lock state of the mechanism's pause button,
A tape recorder provided with a control circuit for controlling the drive state of the second motor according to a detection signal according to the drive state of the first motor and the operation state of the operation button of the third mechanism. 2. In the playback state of the first mechanism, the pause button and the playback button of the second mechanism are pushed to form a playback standby state, and in the third mechanism, the playback button is pushed to play. Even if the switch is turned on, the output of the control circuit upon detection of the driving state of the first motor causes the second motor to be in a stopped state to form a reproduction standby state. The pause button of the second mechanism is restored to continuously bring the second mechanism into the reproduction state, and the second motor is started to be driven by the detection of the first motor stoppage when the second mechanism is stopped. Third
The tape recorder according to claim 1, wherein the mechanism of (3) is continuously set to a reproducing state. 3. In the stopped state of the first mechanism, the pause button and the record / play button of the second mechanism are pushed to form a recording standby state, and the record / play button of the third mechanism is pushed. Even if the recording / reproducing switch is turned on, the output of the control circuit upon detection of the non-driving state of the first motor causes the second motor to stop and the recording standby state is configured. By pushing in, the second mechanism is set to the recording state by the action of the interlocking mechanism,
The tape recorder according to claim 1, wherein at the same time, the third mechanism is brought into a recording state by the action of the control circuit by detecting the drive of the first motor.