JPS6012715B2 - An audio device having a radio section and a tape recorder section that can be engaged with and separated from each other. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a radio part and a tape recorder part that can be engaged and separated from each other, and in the engaged or separated state can be used as a normal radio and a tape recorder, respectively. The present invention relates to an audio device that can be used as a tape recorder with a radio when combined.

In recent years, tape recorders with radios have become extremely popular, and various types have been proposed.

A tape recorder with a radio generally has a radio tuning circuit section, an amplifier circuit section, a speaker section, a tape recorder section,
and a power supply unit are integrated. Such a tape recorder with radio is suitable for all applications,
In particular, those equipped with a built-in battery power supply can be carried and used. However, since the above-mentioned parts are integrated into a tape recorder with a radio, it is usually large and heavy, and is not necessarily convenient to carry.

For example, when a tape recorder with radio is used only as a radio, the tape recorder section is redundant, and
When used as a tape recorder, the radio section is completely redundant, and when portable, these extra parts must also be carried around, which is inconvenient. In addition, it is also possible to prepare a radio and a tape recorder completely separately and connect them with a connecting cord as necessary.
These connections are troublesome and are often connected incorrectly.

Further, although it is possible to perform playback from a tape recorder only, it is generally not preferable to play back from a radio because it is possible to obtain higher quality playback sound than from a tape recorder alone. The present invention provides an audio device that eliminates the drawbacks of the conventional audio device described above, and that can be used as a radio and a tape recorder independently, making it convenient to carry, and when engaged, can be used as a tape recorder with a radio. People have already developed it.

In this device, the electrical connection section for supplying the signal received by the radio section to the tape recorder section and the electrical connection section for supplying the signal reproduced by the tape recorder section to the radio are provided separately. However, as the number of such electrical connections increases, the possibility of poor contact increases, resulting in lower reliability. An object of the present invention is to reduce the possibility of poor contact and improve reliability by configuring the radio section and the tape recorder section to exchange signals in both directions through one common electrical connection section. The purpose is to provide an audio device that can increase the performance.

The audio device of the present invention comprises a radio section and a tape recorder section, each of which can be used independently as a radio and a tape recorder, means for mechanically engaging and separating them from each other, and a common electrical connection. a ground connection part is provided in the radio part and the tape recorder part, and the ground connection part is engaged with the tape recorder part;
A mode in which a signal received by the radio section is supplied to the tape recorder section via the common electrical connection section for recording, and a signal reproduced by the tape recorder section is supplied to the radio section via the common electrical connection section for audible reproduction. This feature is characterized by the provision of a changeover switch for switching between modes.

Next, the present invention will be explained in detail with reference to the drawings.

1 to 4 show the configuration of an example of the audio device of the present invention, and FIGS. 1 and 2 are perspective views showing the radio section and tape recorder section in a separated state, and FIG. is a perspective view showing these in an engaged state. The overall appearance of the radio section 1 is similar to that of a normal portable radio, and includes a tuning section tuning scale 2, a tuning dial 3, an FM/AM selector switch 4, an acoustic adjustment dial 5, a bass sound quality adjustment dial 6, High-pitched sound quality adjustment dial 7, large-mouth flea speaker suitable for high-fidelity playback 8
It also includes a speaker section including a treble speaker 9, an antenna 10, a level meter 11, and a main switch 12. The tape recorder section 30 can be used as a stand-alone ordinary tape recorder, and in this example, it is an ultra-small tape recorder developed by the applicant.
This tape recorder part 3 Kawama cassette installation lid 31
, recording/playback operation member 32, fast forward/rewind operation member 33
, a volume adjustment dial 34, a built-in microphone 35, a jack 36 for connecting an external microphone, a jack 37 for connecting earphones, a speaker 38, a switch 39, and the like. These radio section 1 and tape recorder section 30
A flange 13 is formed on the right side surface of the radio section 10 so that the flange 13 and the side wall 1 can be engaged and separated from each other.
The tape recorder part 3 is placed in the recess formed by the tape recorder part 3 and 4.
0 can be iron-matched. Slidable pins 15, 16, 17, and 18 are provided on the wall 14 of the radio section 1, and these pins 15 to 18 are provided on the back surface of the tape recorder dark section 30.
18 are formed into holes 40, 41, 42 and 43 in which they fit together. The side wall 14 of the radio section 1 is further provided with a protrusion 19 which is deflected outward by a spring force. Knockout buttons 20 are provided on the front and back surfaces of the radio section 1, and by pressing these buttons, the pins 15 to 18 can be moved. Also,
In order to electrically connect the radio section 1 and the tape recorder section 30, a pair of plugs 2 are provided on the side wall 14 of the radio section 1.
1 and 22 are provided, and jacks 44 and 45 to which these plugs 21 and 22 are fitted are formed at corresponding positions on the back surface of the tape recorder section 30. The lengths of these plugs 21 and 22 are made shorter than the height of the flange 13 to protect them from protruding from the green of the flange 13. 0 As shown in FIG. 3, in order to engage the radio section 1 and the tape recorder section 30, the back surface of the tape recorder section 30 is inserted into the recess formed by the flange 3 formed on the side surface of the radio section 1. All you have to do is insert it and push it in against the force of the protrusion 19.

At this time, bins 15 to 18 of radio unit 1 are tape recorders.
The radio section 1 and the tape recorder section 30 are firmly combined by engaging with the holes 40 to 43 of the tape recorder section 30. At the same time, the plugs 21 and 22 of the radio section 1 are connected to the tape recorder section 3.
0 jacks 44 and 45, and an electrical connection is made. Also, the tape recorder section 30 is replaced by the radio section 1.
To separate it from the machine, press the knockout button 20. At this time, the pins 15 to 18 are disengaged from the holes 40 to 43, and the tape recorder part 30 is disengaged by the spring action of the protrusion 19.
is forced to escape from the recess on the side of the radio section 1. Fourth
The figure is a circuit diagram showing a connection device between the radio section 1 and the tape recorder section 30.

The radio section 1 includes a built-in battery power supply 23, an AM tuning circuit 24,
It includes an FM tuning circuit 25, a variable resistor controlled by a volume adjustment dial 5, and an amplification circuit 27. When using such radio section 1 as a normal radio,
The main switch 12 is turned on, and the tuning circuits 24 and 25 and the amplifier circuit 27 are energized. AM and FM are selected by switch 4. For example, when the switch 4 is switched to the FM position, the FM broadcast signal received by the FM tuning circuit 25 is supplied to the speakers 8 and 9 via the switch 4, the variable resistor 26, and the amplifier circuit 27, and the FM broadcast program Z can be reproduced in high fidelity. . Tape recorder section 30
1 includes a front amplification circuit 46, an output amplification circuit 47, a reproduction magnetic head 48, a recording magnetic head 49, a first recording position R for recording a radio broadcast program, and a second recording position R for live recording.
It has a recording position R2 and a playback position P, and has switching switches 50, 51, 52, 53, and 54 that are interlocked with each other, a variable resistor 55 that is controlled by a volume adjustment dial 34, and adjusts the playback output during playback, an equalizer circuit 56, It includes a bias oscillator 57, a transformer 58, a motor 59, a built-in battery power source 60, and a main switch 61.

Switches 50 to 54 and 61 are tape recorder section 3
It is driven by the operation member 32 of 0.

First, the case where the tape recorder section 30 is used as a normal tape recorder will be explained.

The audio signal converted by the built-in microphone 35 or the external microphone connected to the external microphone connection jack 36 is supplied to the front amplifier 46 via the second recording mode R2 of the switch 50, and after being amplified there, it is sent to the switch 51 and 52. The signal is supplied to the output amplifier 47 via the . This output amplifier 47
The amplified signal is further supplied to the recording magnetic head 49 via a switch 53 and an equalizer 56. At this time, the bias oscillator 57 is activated via the switch 54 and the bias signal is added to the recording signal via the transformer 58.
In this way, the audio signal is recorded on the magnetic tape 62. Furthermore, during such recording, an AGC circuit (not shown) operates and the recording level is kept constant, so adjustment by the variable resistor 55 is not necessary. When performing the next reproduction, the switches 50 to 54 are switched to the reproduction position P.

The audio signal recorded on the tape 62 and reproduced by the reproduction magnetic head 48 is transmitted to the switch 50, the front amplifier 46,
The signal is supplied to the output amplifier 47 via the switch 39, the switch 52, and the variable resistor 55. The amplified audio signal is coupled to the speaker 38 via the switch 53 and reproduced. In the case of reproduction by the tape recorder section 30 alone, the switch 39 must be switched to the tape recorder position T. Next, radio section 1 and tape recorder section 30
A case will be described in which a broadcast program received by the radio unit 1 is recorded by the tape recorder unit 30.

In this case, the switch 4 of the radio section 1 is switched to a desired broadcast band, for example, an FM broadcast band. Therefore, F
The FM broadcast signal received by the M tuning circuit 25 is sent to the switch 4.
It is taken out after passing through. As mentioned above, this signal is reproduced by the speakers 8 and 9 of the radio section 1, and is also transmitted to the tape recorder section 30 via the plug 21 and jack 44.
Also supplied. Switch 5 of tape recorder section 30
0 to 54 are switched to the radio recording position R, and the switch 39 is switched to the recording position R. Therefore, the FM broadcast signal supplied to the jack 44 is supplied to the recording magnetic head 49 via the switch 50, the preamplifier 46, the switch 51, the switch 52, the output amplifier 47, the switch 53, the equalizer circuit 56, and the bias oscillator 57. is recorded on tape 62 together with the bias signal from. In this recording, since the microphone 35 is disconnected by the switch 50, howling does not occur even when the sound is reproduced by the speakers 8 and 9 of the radio section 1. Next, a case will be described in which a signal reproduced from the tape 62 is sent to the radio unit 1 for high quality reproduction.

In this case, the switch 4 of the radio section 1 is set to the tape position T.
Switch to APE. Further, the switches 50 to 54 of the tape recorder section 30 are switched to the playback position P, and the switch 39 is switched to the radio position RA. The signal recorded on the tape 62 and reproduced by the reproduction magnetic head 48 passes through the switch 50, the preamplifier 46, and the switch 39 to the jack 4.
4. This signal is further sent to the radio section 1 via the plug 21, and is supplied to the speakers 8 and 9 through the variable resistor 26 and the amplifier circuit 27, and is reproduced.As described above, according to the present invention, the radio section 1 The transmission and reception of signals between the
, 44:22, 45, the electrical connection mechanism is extremely simple.

Furthermore, electrical connection mechanisms that allow two circuits to be connected using one plug and one jack are well known; This allows for flexible connections, saving space and cost. Furthermore, when recording a signal from the radio section using the tape recorder section, and when audibly reproducing the playback signal from the tape recorder section on the radio section, the user must move the operating member of the tape recorder section between the recording mode and the playback mode. Since it is necessary to drive the vehicle on a daily basis, the changeover switch can be changed in conjunction with this operation, so even if a common electrical connection is provided, the user does not need to perform any extra operations. The present invention is not limited to the above-mentioned example, but can be modified in many ways.

For example, when the radio section 1 and tape recorder section 30 are engaged, the built-in battery power supply 60 of the tape recorder section 30
When the tape recorder section 30 is disconnected from the circuit and the tape recorder section 30 is energized by the built-in battery power supply 23 of the radio section 1, it is only necessary to add one plug/jack pair for the power supply. Further, the tape recorder section 30 may not be provided with a speaker 38, and the audio can be listened to only through earphones.

[Brief explanation of drawings]

0 Figures 1 and 2 are perspective views showing the radio part and tape recorder part of an example of the audio device of the present invention in a state where they are separated from each other, and Figure 3 is a perspective view showing the radio part and tape recorder part similarly engaged. FIG. 4 is a circuit diagram showing the detailed connection arrangement between the radio section and the tape recorder data section. 1... Radio club, 8, 9... Speaker, 13...
...Flange, 14...Side wall, 15-18...
...Engagement pin, 23...Built-in battery power supply,
24, 25... Tuning circuit, 27... Amplifying circuit, 21, 22... 0 signal exchange plug,
30...Tape recorder section, 38...Speaker, 40-43...Engagement hole, 44,4
5... Jack for signal transmission and reception, 46... ...
Front tatami amplifier, 47...Output tokijikutomi device, 48...
...Reproducing magnetic head, 49...Recording magnetic head, 5
0 to 54...Recording/playback selector switch. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1.Equipped with a radio part and a tape recorder part, each of which can be used independently as a radio and a tape recorder, means for mechanically engaging and separating them from each other, a common electrical connection part, and a ground connection part. a mode provided in the radio section and the tape recorder section and provided in the tape recorder section in an engaged state in which a signal received by the radio section is supplied to the tape recorder section via the common electrical connection section and recorded there; A radio section and a tape that can be engaged and separated from each other, characterized in that a changeover switch is provided for switching between a mode in which signals reproduced by the tape recorder section are supplied to the radio section via the common electrical connection section and audibly reproduced there. An audio device having a recorder section.