JPS5813981B2 - Tape recorder recording switching mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a first recording operation function that puts one of two tracks into a recording state and the other one into a playback state, and a second recording operation that puts both tracks into a recording state. function,
The present invention relates to a recording switching mechanism for a tape recorder in which both tracks are in a recording state and one track is provided with a third recording operation function for recording a control signal having an effect such as stopping the running of the tape.

To explain each of the above-mentioned recording operation functions in detail, the first recording operation function is a language practice function, in which the practitioner records his or her own voice on the other track while listening to the teacher's voice. .

The second recording operation function is a general-purpose function, and left and right signals obtained from, for example, microphones are recorded on both tracks.

The third recording operation function is a learning function, and unlike language practice, this learning function involves recording problems such as mathematics and science on tape, and having the learner answer the questions while playing back the tape.

Therefore, it is necessary to temporarily stop the running of the tape after the question is played back, and a control signal for such a stopping operation is recorded on a track different from the track on which the question is recorded.

The present invention aims to provide a recording switching mechanism suitable for a tape recorder having the above-mentioned three different recording operation functions, and will be described below with reference to the drawings.

The drawings are all plan views of the main parts of the switching mechanism of the present invention,
Each shows a different operating state.

In the figure, reference numeral 1 denotes a first switching lever that is slidably attached to a fixed board 2, and is biased in the direction of arrow A by a spring 3, and a first spring that switches a first switching switch 4 that switches the recording function. Means 5 is fixed.

Reference numeral 6 denotes a second switching lever that is slidably attached to the fixed base plate 2, to which a second spring means 8 for switching the second switching switch 7 is fixed, and a second switching lever 6 that is attached to the first switching lever 1 is attached. A contact portion 10 that contacts the contact piece 9 is formed.

Reference numeral 11 denotes a third switching lever slidably attached to the fixed base plate 2, and a third spring means 13 for switching the third switching switch 12 is fixed and formed on the second switching lever 6. A contact piece 14 that contacts the contact portion 10 is provided.

15, 16 and 17 are respectively displaced when push buttons (not shown) are operated, and the first, second and third switching levers 1, 6,
11 in the direction of arrow B.

Reference numeral 18 denotes an erroneous erasure prevention member that detects the presence or absence of an erroneous erasure prevention claw formed at the rear end of the cassette (not shown) and moves. This has the function of preventing the second switching lever 6 from being displaced in the direction of arrow B.

The switching mechanism of the present invention is constructed as described above, and its operation will be explained next.

Figure 1 shows the first, second and third switching levers 1, 6 and 11.
are all in the inactive position, and regeneration takes place in this state.

When a recording switching operation for language practice is performed in this state, the first switching lever 1 is displaced by the first operating piece 15 in the direction of arrow B against the biasing force of the spring 3.

As a result, the first spring means 5 comes into contact with the switch 19 of the first changeover switch 4, and the first changeover switch 4 is switched to the recording side to enter the language practice state shown in FIG.

That is, in this state, only the practice track is in the recording state, and the practitioner can record his or her own voice while listening to the teacher's voice.

Next, when a recording switching operation for general-purpose use is performed, the second switching lever 6 is displaced in the direction of arrow B by the second operating piece 16, but in this case, the contact portion 10 formed on the switching lever 6 is The first switching lever 1 comes into contact with the contact piece 9 provided on the first switching lever 1 and displaces the first switching lever 1 in the direction of arrow B.

As a result, the first spring means 5 and the second spring means 8 are
It comes into contact with the switches 19 and 20 of the second changeover switches 4 and 7, and switches the first and second changeover switches 4 and 7 to the recording side, resulting in the recording state for general use shown in FIG.

That is, in this state, left and right signals obtained from microphones etc. are recorded on both tracks.

Further, such a recording operation is possible because the displacement prevention by the erroneous erasure prevention member 18 is released only when a cassette whose erroneous erasure prevention claw has not been removed is mounted.

Next, when the recording switching operation for learning use is performed, the third switching lever 11 is displaced in the direction of arrow B by the third switching operation piece 17, but in this case, the abutment piece 14 provided on the switching lever 11 is The contact portion 10 formed on the second switching lever 6 is brought into contact with the contact portion 10 formed on the second switching lever 6, and the second switching lever 6 is displaced in the direction of arrow B. 10 abuts, the first switching lever 1 is also displaced in the direction of arrow B.

As a result, the first spring means 5, the second spring means 8 and the third spring means 13 are connected to the first, second and third changeover switches 4, 7, respectively.
．． 12 switches 19, 20, and 21, the first, second, and third selector switches 4, T, and 12 are switched to the recording side, and the learning use recording state shown in FIG. 4 is entered.

That is, in this state, problems such as arithmetic are recorded by a microphone on one track, and control signals for operations such as stopping tape running are recorded on the other track.

In addition, since such switching operation is controlled by the presence or absence of the erroneous erasure prevention claw as in the above-mentioned general-purpose use, valuable questions recorded on the teaching tape will not be erroneously erased.

In addition, the first and second
The return of the third switching levers 1, 6, and 11 to their non-operating positions is effected by the spring 3 that biases the first switching lever 1.

As explained above, in the recording switching mechanism of the present invention, when the first switching lever is displaced by the first recording operation, the recording switching mechanism of the present invention
Configure the first recording state by changing only the selector switch,
When the second switching lever is displaced by the second recording operation, the first switching lever is moved in conjunction and the second switching switch and the first switching switch are switched to configure the second recording state, and the third switching state is established. When the third switching lever is displaced by the recording operation, the second switching lever and the first switching lever are also moved in conjunction with each other to switch the third switching switch, the second switching switch, and the first switching switch, and the third recording state is achieved. In other words, each recording operation state is configured by a combination of three changeover switches, so each recording operation can be performed by providing a changeover switch corresponding to each recording operation and switching only that switch. Compared to the case of configuring the operating state, it is possible to reduce the number of switch contacts, and therefore it has the advantage that wiring mistakes and soldering mistakes can be minimized.

Further, the present invention uses spring means as means for respectively switching the first changeover switch, the second changeover switch, and the third changeover switch, and each spring means is provided on each of the first, second, and third changeover levers. Therefore, it has the great feature of being able to absorb mounting errors between the switching levers and mounting errors of the changeover switches when the switching levers are moved in conjunction with each other.

Furthermore, in the present invention, the force for returning the second and third switching levers to the non-operating position is obtained by the spring that applies the force for returning the first switching lever to the non-operating position. This has the advantage that it does not require a spring, and therefore has a simple structure and easy assembly work.

[Brief explanation of drawings]

The drawings all relate to the recording switching mechanism of the present invention, and FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are plan views of essential parts showing different states, respectively. Explanation of main figure numbers, 1...First switching lever, 3.
... Spring, 4 ... First changeover switch, 6 ... Second changeover lever, 7 ... Second changeover switch, 11 ... Third switching lever, 1
2... Third changeover switch, 18... Member for preventing accidental erasure.

Claims (1)

[Claims] 1. In a tape recorder equipped with first, second, and third different recording operation functions, the first, second, and third recording functions are switched.
second and third changeover switches; a first changeover lever that is slidably displaced by a first recording operation and is provided with a first spring means that changes over the first changeover switch; and a return to the first changeover lever. a second spring means for applying a force and a second spring means for slidingly displacing the second changeover switch by a second recording operation, and a means for interlockingly displacing the first changeover lever; 2 switching levers, and a third spring means that is slidably displaced by a third recording operation and switches the third switching switch; and a third switching lever provided with a means for interlockingly displacing the second switching lever, and during the first recording operation, the first switching lever is switched by displacement of the first switching lever, and the second switching lever is switched during the second recording operation. Sometimes the displacement of the second switching lever and the first switching lever. The second changeover switch and the first changeover switch are changed over, and during the third recording operation, the third changeover switch and the second changeover switch are changed by the displacement of the third changeover lever, the second changeover lever, and the first changeover lever.
A recording switch of a tape recorder, characterized in that the changeover switch and the first changeover switch are changed over, and the return force of the second changeover lever and the third changeover lever is obtained from a spring that applies a return force to the first changeover lever. mechanism.