JPS5931145B2 - A coupling device for audio equipment having a radio section and a tape recorder section that can be coupled and separated. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for combining a radio section and a tape player coater section in an audio equipment that can be combined and separated.

The conventionally known cassette tape recorder with radio, which includes a radio tuner section, tape recorder section, speaker, amplifier, and power supply circuit, is suitable for all kinds of applications, and can be used even when portable due to its built-in battery power supply. Because it is possible and also inexpensive, it has become extremely popular over the past few years. However, in the case of the cassette tape recorder 15 with a radio, even during portable recording in which only the tape recorder part is used, other parts that are not used must be carried around.

In order to solve this inconvenience, the applicant first developed a radio section and a tape recorder section 20 that can be coupled and separated, and by carrying one or both of them, the desired operation can be carried out. We proposed an audio device that can perform this function.

This audio equipment has 1a) independent operation in which the radio section and tape recorder section are used as a normal radio and a tape recorder, respectively, when combined and separated, and lb) the output of the radio section is recorded by the tape recorder section when combined. By configuring the configuration in which the operations 1 and 30 are performed, lc) the operation of reproducing the output of the tape recorder section by the radio section at the time of coupling, 2a) when recording with a microphone, it is convenient because it is only necessary to carry a small and lightweight tape recorder. 2) It is possible to make high-quality recordings from a radio, and 2c) Hi-Fi playback is possible because the radio's output amplifier and large-diameter speaker can be used when playing back recorded tapes. , etc.

By the way, in a typical radio-enabled tape recorder, since the radio section and the tape recorder section are integrated, a mode changeover switch is provided to switch between the radio function and the tape recorder function.

In conjunction with this mode changeover switch, the input signal for recording on the tape recorder section is changed as appropriate.

That is, when the mode selector switch is switched to the radio function, the output signal of the radio section can be played back by the speaker and simultaneously recorded by the tape recorder section. Also,
When the mode changeover switch is switched to the tape recorder function, the output signal of the tape recorder section can be played back through the speaker, or the audio signal detected by the microphone can be recorded. Further, when recording is performed using a microphone with the mode changeover switch set to the tape recorder function, the speaker is normally inactivated to prevent howling. Even in the aforementioned audio equipment having a radio section and a tape recorder section which can be combined and separated, it is also possible to provide a mode changeover switch having the above-mentioned function. However, in either case, since the switching operation is performed using only one small switch, it is difficult to discern at a glance which operating mode the radio-powered set tape recorder or the audio equipment is in.

Moreover, for this reason, the user often makes a mistake in switching the input signal to be recorded and ends up recording audio that was not intended to be recorded, such as noise around the device. In an attempt to solve these drawbacks, the radio-powered set tape recorder is equipped with an automatic tape stop device, which returns the tape drive mechanism to the stop position when the tape has finished winding, and switches the mode selector switch to the radio function. There is also known a configuration that automatically returns to .

However, in this case, the mechanism becomes complicated, which may impede miniaturization of the device. An object of the present invention is to appropriately switch the recording input signal of the tape recorder section when the tape recorder section performs a recording operation in a state where the radio section and the tape recorder section are combined in the above-mentioned type of audio device. It is an object of the present invention to propose a coupling device that can do this and also takes advantage of the feature that the radio section and tape recorder section are separate bodies.

The present invention includes a radio section and a tape recorder section that can be coupled and separated from each other, terminal groups are provided at opposing positions, and at least input and output signals are exchanged when coupled. In a coupling device for audio equipment in which each section can be used independently, (a) a support member capable of supporting the tape recorder section is provided on one side of the radio section, and a terminal group of the radio section is arranged on this support member. , the support member is connected to the tape recorder section by a first and a second support member.
(b) a switch is provided which is opened and closed in accordance with the displacement of the support member, and the switch disables the microphone of the tape recorder in one position of the support member; It is characterized by being arranged as follows.

The support member mechanically and electrically connects the radio section and the tape recorder section, and can be constituted by a pocket that supports the tape recorder section by storing it therein.

In the above coupling device, it is preferable that a second switch operated in conjunction with the switch is provided, and the second switch is arranged so as to ground the output signal of the radio section when the microphone is operated. The invention will now be explained with reference to the drawings.

Reference numeral 10 indicates a radio section, and 20 indicates a tape recorder section.

The radio section 10 includes an antenna 11, a tuning dial 13 of a tuner 12, a tape/radio selection switch 14,
Sound quality adjustment dial 15, volume adjustment 16, speaker 17
etc. Further, the tape recorder section 20 has a built-in condenser microphone 21, an external microphone jack 22, an earphone jack 23, a volume adjuster 24, a play button 25, a record button 26, and the like. The play button 25 and the record button 26 play and stop the tape recorder when they are displaced slightly apart from each other in parallel in a predetermined first direction, and the record button 26 is displaced in a second direction perpendicular to the displacement. It may be of a known type that allows recording to be performed when the play button 25 is moved in the first direction while in close contact with the play button 25. These buttons 25 and 26 switch the recording and playback switches 27a to 27.
form e. The radio unit 10 and tape recorder unit 20, which include the above-mentioned elements, are constructed so that they can be connected and separated from each other, but such a construction itself is known.

In one embodiment of the present invention, as shown in FIGS. 1 and 2, the side surface of the radio section 10 is formed to be somewhat larger than the back surface of the tape recorder section 20, and a recess 30 is provided on one side. A pocket 31 is provided in the recess 30 as a support member capable of supporting the tape recorder section 20. This pocket 3
1 supports the tape recorder section 20 by storing it therein, and is configured to tilt around its lower end. That is, as shown in FIGS. 3 and 4, the radio section 1
A push button 32 is disposed to protrude from the top surface of the device 0, and this button 32 is always biased upward by a coil spring 33 and is fixed to a sliding member 34. This sliding member 34
is guided by a guide pin 35 attached to the inner wall of the radio section 10. A locking pin 36 is attached to the lower end of the sliding member 34. A protruding piece 37 having a curved portion that engages with the locking pin 36 is provided at the upper part of the pocket 31. Also, pocket 31
The lower end of the pocket 31 is attached to the main body of the radio section 10 by a shaft 38, and a coil spring 39 is arranged between the pocket 31 and the main body of the radio section 10 so that the pocket 31 is always oriented in an open position with respect to the radio section 10. bias. The opening/closing operation of the pocket 31 having the above structure is as follows.

A push button 32 protruding from the top of the radio section 10
When the sliding member 34 is pushed downward against the spring force of the coil spring 33, the sliding member 34 is displaced downward along the guide pin 35, and as a result, the locking pin 36 at the lower end of the sliding member 34 locks into the pocket 31.
Since the protruding piece 37 of
(see Figures and Figure 4). Pocket 3 opened outward
1 into the radio section 10, the pocket 31 will lock into the locking pin 3.
6 is locked in the initial state (see Figures 1 and 3).
Needless to say, it is possible to return to . Pocket 31 above
In the closed position, the tape recorder part is completely housed in the radio part with about half of its surface exposed, and in the open position, the built-in microphone 21, jacks 22, 23, and operation buttons 25, 26 are exposed. It is desirable to do so.

In order to enable the radio section 10 and the tape recorder section 20 to be connected and separated from each other, input/output terminal groups 40a to 40d and 41a to 41d are provided at opposing positions on both sections 10 and 20, respectively.

In this embodiment, terminal groups 40a to 40 of the radio unit 10
d is arranged at the bottom of the pocket 31, and the terminal groups 41a to 41d of the tape recorder section 20 are arranged at the bottom of the tape recorder section 20, that is, on the surface opposite to the surface on which the built-in microphone 21 is provided. In addition, each of the above terminals 40a~
The respective functions of 40d and 41a to 41d will be described later. In this embodiment, the radio section 10 is further provided with a plunger 42 that projects into the recess 30 of the radio section 10, and the plunger 42 is connected to the recess 30 by a coil spring 43.
Always biased towards.

Fold the tip of the plunger 42 back to the free end 44 of the pocket 31.
The plunger 4 is brought into contact with the pocket 31, and the plunger 4
2 is arranged so that it moves forward and backward into the recess 30. Furthermore, the rear end of the plunger 42 is connected to the flexible member 45 of the contact switch 45.
a. This flexible member 45a is grounded, and at the position where the pocket 31 is opened and the plunger 42 protrudes into the recess 30, the contact 45b is connected to the flexible member 45a, and the pocket 31 is closed and the plunger 42 is brought into the recess 30.
In the more retracted position, the contact 45c is arranged to be connected to the flexible member 45a. Among these, the contact 45b is connected to the circuit system of the speaker 17 of the radio section 10, and the contact 45b is connected to the circuit system of the speaker 17 of the radio section 10.
5c is an input/output terminal group 40a to 40d, 4 as described later.
They are respectively inserted into the power supply circuit system of the condenser microphone 21 led into the radio section 10 via 1a to 40d. FIG. 5 is an electrical circuit diagram of an audio device equipped with a coupling device according to the present invention.

In this circuit diagram, the same reference numerals as used above indicate the same elements, respectively. In the radio section 10, a tape/radio changeover switch 14 has contacts R and T corresponding to the radio position and the tape position, respectively. The contact R is connected to the tuner 12, and the contact T is connected to a terminal 40a corresponding to the terminal 41a of the tape recorder 10, which transmits the output signal of the tape recorder 10. The volume adjuster 16 is
The input voltage to the main amplifier 50 connected between this and the speaker 17 is adjusted. Reference numeral 51 denotes an earphone jack connected between the main amplifier 50 and the speaker 17, and when an earphone (not shown) is inserted into the earphone jack, the speaker 17 becomes inactive.

52 is a power supply battery, 53 is a connecting jack for a converter (not shown), 54 is a power switch, 55 is a voltage control device, 5
6 is an amplifier.

The terminals 40b to 40d of the radio section 10 correspond to the terminals 41b to 41d of the tape recorder section 20, respectively, and the terminal 40b is connected to the contact 45b and also connected immediately before the volume controller 16. . Further, the terminal 40c is connected to the contact 45c, and furthermore, the terminal 40d
supplies power from the radio section to the tape recorder section when the radio section 10 and tape recorder section 20 are coupled. Many people,
In the tape recorder section 20, the recording/reproduction changeover switches 27a to 27e are interlocked and displaced between the recording position Rec and the reproduction position PB. The changeover switch 27a changes the function of the recording/reproducing magnetic head 60. The changeover switch 27b transmits the output signal of the radio section 10 transmitted via the microphone 21 or the terminals 40b and 41b at the recording position Rec2, and the output signal of the magnetic head 60 at the reproduction position PB through the AGC circuit 61. each preamplifier 62
selectively supplied to The changeover switch 27c is in the front! The terminals 40a and 41a are used only when reproducing the output signal of the amplifier 62.
The signal is supplied to the radio section 10 through the. The changeover switch 27d has the function of keeping the volume adjuster 24 fixed during recording and variable during playback. Further, the changeover switch 27e supplies power to the recording bias oscillation circuit 635 only during recording. 64 is the main amplifier, 66 is the equalizer circuit, 66 is the power battery, 67 is the power switch, and 68 is the built-in capacitor microphone 2.
This is a conducting wire connected to the power supply circuit No. 1.

The coupling device according to the present invention has a structure in which the connection between the tape recorder section 20 and the radio section 10 is maintained even when the pocket 31 is open (see Fig. 2) unless the tape recorder section 20 is pulled diagonally upward. do.

Next, the operation of the circuit corresponding to opening and closing of the pocket 31, particularly the function of the contact switch 45, will be explained.

3a) When the pocket is opened: When the pocket 31 is opened, the contact switch 45 is in the state shown in FIG.

That is, the contacts 45a and 45b are closed, and on the contrary, the contacts 45a and 45c are open. In this position, the tape recorder section can perform playback operations using earphones, and recording operations can be performed using the built-in condenser microphone 21 or an external microphone (not shown) inserted into the microphone jack 22. The reason for this will become clear from what will be described later. As described above, since the contacts 45a and 45c are open, the radio section 10
The battery 52 drives the built-in condenser microphone 21 via terminals 40d and 41d, and the voltage applied thereto is not grounded.

The output signal of the microphone 21 is supplied to an AGC circuit 61, a preamplifier 62, a main amplifier 64, and an equalizer circuit 65, and the output signal of the equalizer circuit 65 is superimposed on the bias current generated by the bias oscillator circuit 63 to be output to the recording/playback head. 60 and recorded on a magnetic tape 69. At this time, the contacts 45a and 45b are closed and the output of the tuner 12 of the radio unit 10 is grounded, so even if the switch 14 is in position R, the output of the microphone 21 and the output of the tuner 12 are mixed. Never. Note that when the switch 14 is in position R, the output of the amplifier 56 is grounded by the switch 45, so the speaker 17 is not driven. Further, even when the switch 14 is at the position T, the output of the preamplifier 62 is not transmitted to the radio unit 10 due to the action of the switch 27c, so that howling is prevented from occurring. Recording the output of the tuner 12 of the radio section 10 when the pocket 31 is in the open position is achieved by switching the contact switch 4.
This is impossible because the output of the tuner 12, which had the contacts 45a and 45b of No. 5 closed, is grounded.

Also, to perform the playback operation of the tape recorder section 20 at this position, the contact 45a of the contact switch 45,
45b is closed, it is impossible to set the switch 14 to position T and supply the output of the tape recorder section to the amplifier 56 because the output terminal of the amplifier 56 will be grounded. That is, playback of the tape recorder section 20 at this position is possible only through an earphone (not shown) inserted into the earphone jack 23. As described above, except in limited cases, the open position of the pocket 31 corresponds only to recording using the microphone of the tape recorder section 20.

3b) When the pocket is closed: When the pocket 31 is closed, the contact switch 45 closes the contact 45a.
, 45b open, and the contacts 45a, 45c change to a closed state.

At this position, radio reception by the radio section 10, recording of the received signal by the tape recorder section 20, and reproduction by the radio section 10 of the output of the tape recorder section 20 are possible. A radio signal received by the antenna 11 and tuner 12 of the radio unit 10 is supplied to the speaker 17 via the switch 14, amplifier 56, volume controller 16, and main amplifier 50, and is reproduced.

At the same time, the output of the amplifier 56 changes to the contacts 45a and 45b.
The terminals 40b and 41b are not grounded due to the gap between them.
The signal is then supplied to the AGC circuit 61 of the tape recorder section 20. On the other hand, since the contacts 45a and 45b are closed, the 1 drive voltage of the built-in capacitor microphone 21 becomes zero, and the output of the capacitor microphone 21 also becomes zero, so the AGC circuit 61 receives only the output signal of the radio section 10. will be supplied. The output signal of the AGC circuit 61 is supplied to the preamplifier 62, and thereafter the recording operation is performed in the same manner as described above. Further, the output signal of the tape recorder section 20 is reproduced by the radio section 10 as follows.

The signal recorded on the magnetic tape 69 is transferred to the selector switch 27.
The signal is detected by the magnetic head 60 which is switched for reproduction by the signal a, and is supplied to the preamplifier 62 via the switch 27b. The output of the preamplifier 62 is amplified by the main amplifier 64 and can be reproduced by the earphone.
When combined with the selector switch 27c1 terminals 41a, 40
The signal is supplied to the selector switch 14 of the radio unit 10 via a. When the selector switch 14 is selected at tape position T, the output of the tape recorder section 20 is supplied to amplifiers 56 and 50 and reproduced by the speaker 17. As explained above, the coupling device according to the present invention corresponds particularly to when the tape recorder section 20 is used for recording, when the open position of the pocket 31 corresponds to when recording from a microphone, and when the closed position of the pocket 31 corresponds to when recording from a radio. do.

This configuration is first possible for an audio device that has a radio section and a tape recorder section that can be combined and separated, and has an extremely useful effect that allows the operating mode of the audio device to be identified at a glance and prevents erroneous operation. It is something that brings about an effect. Furthermore, when the pocket is open, the output of the radio section is grounded and only the output of the microphone is recorded, and when the pocket is closed, the built-in microphone is inactive and only the output of the radio section can be recorded.

This has the advantage that the recording input signal can be selected reliably depending on whether the pocket is opened or closed. Note that the present invention is not limited to the above-described embodiments.

For example, the support member illustrated as a pocket may generally be of the parallel displacement type, as long as it exposes the built-in microphone of the tape recorder unit in a visually distinct position when opened, and may also be of the type with parallel displacement; It may also be something that tilts toward

[Brief explanation of drawings]

1 and 2 are perspective views showing the external appearance of an embodiment of the coupling device according to the present invention in a closed position and an open position, and FIGS. 3 and 4 are taken along line I in FIG. 1 and line 1 in FIG. 2, respectively. FIG. 5, a partial cross-sectional view along FIG. 5, is an electrical circuit diagram of an audio device comprising a coupling device according to the invention. 10... Radio section, 20... Tape recorder section, 21... Microphone, 31...
... Holding members, 40a to 40d, 41a to 41d...
...Input/output terminal group, 45...Switch, 4
5a to 45c...Same contact.

Claims (1)

[Scope of Claims] 1. A radio section and a tape recorder section, which can be coupled to and separated from each other, and have terminal groups provided at opposing positions so that at least input and output signals can be exchanged when coupled. and a coupling device for audio equipment in which each tape recorder section can be used independently, (a) a support member capable of supporting the tape recorder section is provided on one side of the radio section, and a terminal group of the radio section is attached to the support member. and the supporting member is configured to be movable between a first and second position with respect to the tape recorder section; (b) a switch is provided that opens and closes in accordance with the displacement of the supporting member; A coupling device for an audio device having a radio section and a tape recorder section that can be coupled and separated, characterized in that the microphone of the tape recorder is disposed at one position of the support member so as to be inactive. 2. The coupling device according to claim 1, further comprising a second switch operated in association with the switch, the second switch being arranged to ground the output signal of the radio unit when the microphone is operated. A coupling device for audio equipment having a radio section and a tape recorder section that can be coupled and separated.