JPS634315Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the structure of a detachable tape recorder.

A typical tape recorder has two heads, one for erasing and one for recording and playback (hereinafter simply referred to as recording/playback), and three amplifiers: one for erasing, one for recording, and one for driving speakers. There is.

Nowadays, due to the diversification of uses of tape recorders, there is a demand for portable tape recorders that are especially suitable for playback. However, conventional tape recorders developed for this purpose were equipped with the two general elements mentioned above and three amplifiers, and as a result of pursuing portability, mechanical and electrical improvements were made. It is complicated, increases the price, has short lifespan of the built-in battery, and is large and heavy.

The purpose of this invention was to eliminate the above-mentioned drawbacks, and focused on the functional characteristic that a low-output playback function is sufficient for most portable devices. Department and
The amplifier section is separated from the amplifier section, which includes elements that consume large amounts of power and are not necessary for playback, such as the erase head, erase amplifier, recording amplifier, and speaker drive amplifier, and the mechanical section and amplifier section are detachable, allowing for independent playback. The functional mechanism is small, lightweight, and has low power consumption.

Examples of this invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view of a detachable tape recorder which is an embodiment of this invention, showing a state in which the mechanism section is removed from the amplifier section. In addition, Fig. 2 A, B, and C show the connection state of the operation button and head, etc., and Fig. 3 A,
B and C are stops when the mechanism section is attached to the amplifier section,
FIG. 4 shows a cross-sectional view of the main parts in each mode of playback and recording, and FIG. 4 shows an electrical wiring diagram.

As shown in FIG. 1, this tape recorder consists of an amplifier section 1 and a mechanism section 2 that can be attached to and detached from a mechanism attachment section A of this amplifier section 1. It is composed of a hook 10 and an ejector 11 provided on the amplifier section 1, a hook receiving section (not shown) and an ejector engaging section (not shown) provided on the mechanism section 2. Also, similarly,
The mechanical part mounting part A is provided with a power plug 12 that also serves as a positioning pin, and a terminal part 13 for connecting various electrical terminals such as for recording circuits and playback circuits. A connecting portion (not shown) is provided to connect to the plug and the terminal portion. Further, an erasing head 14 and a pin 15a for setting a recording mode are exposed in the mechanism mounting section A, and as will be described later, these are arranged in a specific relationship position with a predetermined part of the mechanism section 2. There is. Note that the only operation buttons provided on the amplifier section 1 are the record button 16 and the eject button 17, and pressing down the record button 16 switches the switches necessary for recording, and also switches the switch necessary for recording, as will be described later. The ejector 11 is pushed upward, and the depressing operation of the eject button 17 pushes the ejector 11 upward.

The mechanism section 2 is composed of the minimum parts necessary for playback, and includes a normal tape drive mechanism, a recording/playback head, a head amplifier, a battery for driving these, and a headphone output terminal that are integrally provided in the mechanism section main body 20. , the operation section is provided with several operation buttons such as a playback button 20, a stop button 21, and other tape eject buttons.

In the above configuration, in order to attach the mechanism section 2 to the amplifier section 1, it is sufficient to vertically lower the mechanism section 2 onto the attachment section A from above and engage the hook 10 with the hook receiving section. To remove the mechanism section 2, it is sufficient to press the eject button 17 and push the mechanism section 2 upward with the ejector 11.

FIG. 2A shows the state in which the record button 16 is connected to the erase head 14 and the pin 15a. Record button 1
A hanging lever 16a is fixed to the lever 1.
The tip of the bar 6a comes into contact with one end of the horizontal bar 3 which is swingably supported at the center. Also, this horizontal bar 3
At the other end is a sub chassis 15 integrated with a pin 15a.
Further, an erasing head 14 is engaged with the upper end of the sub-chassis 15. The state shown by the solid line in the figure is the state in which the recording button 16 is not pressed down, and the state shown by the dotted line is the state in which the button 16 is pressed down. That is, record button 16
When the erase head 14 is pressed down, the erase head 14 is pushed upward.

FIG. 2B shows a state in which the eject button 17 and the ejector 11 are connected. The structure of the connection is the same as that shown in FIG. 2A, and the hanging lever 17a, horizontal bar 4, and sub-chassis 5 are the connection elements. The state shown by the solid line in the figure is the state in which the eject button 17 is not pressed down, and the state shown by the dotted line is the state in which the button 17 is pressed down.

FIG. 2C shows how the playback button 21, playback head 23, and pinch roller 24 are connected. In this case as well, the connection structure is almost the same as above, and the sub-chassis 7 engages the hanging lever 21a, the horizontal bar 6, the reproducing head 23, and the pinch roller 24. The state indicated by the dotted line in the figure represents the state in which the button 21 is pressed down.

Next, the state of the head section in each mode will be explained with reference to FIG.

FIG. 3A shows the stop mode. The sub-chassis 7 of the mechanism section 2, the sub-chassis 15 of the amplifier section, and the sub-chassis 5 supporting the ejector 11 are always elastically biased downward by springs (not shown), and the erasing head 14 and the recording/playing head 23 Both do not touch the tape 8.

FIG. 3B shows the playback mode. This mode is formed by pressing down on the play button 21, and the second
The recording/reproducing head 23 and the pinch roller 24 are pushed up by the mechanism shown in FIG. Therefore, the recording/reproducing head 23 and the pinch roller 24 come into contact with the tape 8. As is clear from the figure, this state is formed in exactly the same way whether the mechanism section 2 is attached to the amplifier section 1 or separated. appears at the head amplifier output in the mechanism section 2. Therefore, when the device is attached, this reproduced signal is amplified by the amplifier section 1 via the terminal section 13, and when it is separated, it is output to the headphone terminal (not shown) of the mechanism section 2.

Figure 3C shows the recording mode. This mode is created by pressing down on the record button 16, and the second
Erase head 14 and pin 1 are erased by the mechanism shown in Figure A.
5a is pushed up. By pushing up the pin 15a, the sub-chassis 7 is also pushed up, and eventually the erasing head 14, the recording/reproducing head 23, and the pinch roller 24 all come into contact with the tape 8 in the recording mode.

As described above, the stop mode and the playback mode are valid whether the mechanism section 2 and the amplifier section 1 are attached or separated, and the head section is configured in which only the recording mode is established only when the mechanism section 2 and the amplifier section 1 are attached.

Next, the electrical connections of this tape recorder will be explained with reference to FIG. It should be noted that since this embodiment employs a stereo system, the symbols in FIG. 4 are labeled R or L to indicate the right or left channel.

In the same figure, the mechanism section 2 includes a recording/playback head 2.
3, 23R, 23L are recording/playback switch 3
0, 30R, 30L to the head amplifier 31,
31R, 31L, or recording input terminal 32,
Connected to 32R and 32L. The recording/playback switching switch 30 is connected to the recording button 16, and is located on the recording input terminal 32 side when the recording button is pressed down, and is located on the head amplifier 31 side in other cases, that is, in stop mode and playback mode.

Further, the output sides of the head amplifiers 31, 31R, 31L are connected to a headphone jack 34 or reproduction output terminals 35, 35R, 35L via output changeover switches 33, 33R, 33L. The output changeover switch 33 is normally located on the playback output terminal 35 side, and is switched to the headphone jack 34 side when a headphone plug is inserted into the headphone jack 34.

On the amplifier section 1 side, the playback output terminals 35, 3
Playback input terminals 35' and 3 corresponding to 5R and 35L
5'R and 35'L are also the recording terminals 32 and 32.
Recording output terminals 32', 3 corresponding to R, 32L
2'R, 32'L are provided in the terminal section 13 (see Figure 1), and playback input terminals 35', 35'R, 35'L
Speaker drive amplifier 36, 36R, 36L
However, the recording output terminals 32', 32'R, 32'L
are connected to recording amplifiers 37, 37R, and 37L, respectively. And speaker drive amplifier 3
The output of 6, 36R, 36L is the speaker 9, 9R,
Connected to 9L, recording amplifier 37, 37R, 37
For the L input, input selector switches 38, 38R,
Microphones 39, 39R, 39L or external input terminals 40, 40R, 40L are connected via 38L.
Note that 41 is an erase amplifier whose output is directly connected to the erase head 14. Although not shown in the drawings, when the mechanism section 2 is separated from the amplifier section 1, the head amplifier 31 and tape drive mechanism of the mechanism section 2 are driven by a built-in battery, but when the mechanism section 2 is attached to the amplifier section 1, When the amplifier section 1 is in use, these drives are performed by a power supply device provided within the amplifier unit 1, which uses the power plug 12 (see FIG. 1) as a supply terminal.

The sub-chassis 7 corresponds to the sub-chassis of this invention, and the power plug 12 corresponds to the power supply terminal of this invention.

In addition, the hanging lever 16a, the horizontal lever 3,
The sub-chassis 15 and pin 15a constitute the recording set mechanism of this invention.

As described in detail in the embodiments above, according to this invention, the mechanism section 2 functions independently as a tape playback device, and therefore can be removed from the amplifier section 1 and used as a playback-only device. In this case, since the erasing head 14, erasing amplifier 41, recording amplifiers 37R, 37L, etc., which are required only during recording, are provided on the amplifier section 1 side, the mechanism section 2 has only the minimum components necessary for tape playback. As a result, the structure and electric circuit of the mechanism section 2 are simplified,
Moreover, since the built-in battery has sufficient capacity to drive these components, there is an advantage that the shape of the mechanism can be made smaller and the weight can be reduced. Furthermore, when the mechanism section 2 is attached to the amplifier section 1, power is supplied from the power supply device inside the amplifier section 1, so that the battery of the mechanism section 2 can be prevented from being consumed, and the battery can be made smaller. . Therefore, when the device is portable to enjoy tape playback using headphones, only the small and lightweight mechanism section 2 needs to be carried, and when the device is stationary to enjoy playback or recording through a speaker, the mechanism section can be attached to the amplifier section. In this case, when the mechanism section is attached to the amplifier section and the record button is pressed, the erasing head 14 on the amplifier section 1 side enters the mechanism section side, and the recording/playback head 23 is advanced, and both heads are pressed. This is an extremely easy-to-use tape recorder that can be set to a recording-enabled state and operates as if it were a tape recorder with both heads integrated, ensuring operability that is no different from conventional integrated tape recorders. can be obtained.

[Brief explanation of the drawing]

FIG. 1 shows an external perspective view of a detachable tape recorder which is an embodiment of this invention, and FIG.
Figures B and C show the connection state of the operation buttons and heads, etc. Figures A, B, and C are cross-sectional views of the main parts in each mode of stop, playback, and recording when the mechanism section is attached to the amplifier section. Figure 4 shows electrical wiring diagrams. 1... Amplifier section, 2... Mechanism section, 10... Hook, 13... Terminal section, 14... Erase head, 16
...Record button, 17...Eject button, 2
1...Play button, 22...Stop button, 23...
... Recording/playback head, 31, 31R, 31L... Head amplifier, 34... Headphone terminal, 36, 36
R, 36L... Speaker drive amplifier, 37, 3
7R, 37L... Recording amplifier, 41... Erasing amplifier.

Claims (1)

[Scope of claim for utility model registration] Tape drive mechanism, recording/playback head, head amplifier, battery for driving these, headphone terminal and playback output terminal, recording input terminal,
The recording and playback head is equipped with a power supply terminal, and is mounted on a playback sub-chassis, and when a play button provided on the surface of the device is pressed, the sub-chassis moves forward and comes into contact with the tape surface, a mechanical unit that operates as a tape playback device by driving the tape drive mechanism and head amplifier with power supplied from the battery or the power supply terminal; an erase head, an erase amplifier, a recording amplifier, and a speaker drive amplifier; A speaker, a power supply device that drives these and supplies power to the power supply terminal described later, a mechanical part mounting part, when the mechanical part is mounted on this mechanical part mounting part, the playback output terminal, the recording input terminal, the power supply terminal an amplifier section including a playback input terminal, a recording output terminal, a power supply terminal, and an erase head provided in the mechanical section mounting section, each of which is in contact with the mechanical section mounting section; When the recording button provided on the surface of the device is pressed with the mechanism section attached, the erasing head enters the mechanism section and comes into contact with the tape surface, and at the same time advances the sub-chassis to start the recording process. A removable tape recorder comprising a recording set mechanism that brings a playback head into contact with the tape surface.