JPS6346915B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette tape recorder device, and more particularly to a cassette tape recorder device that is made smaller and lighter by improving a mechanism for detecting rotation of a reel.

As is well known, for example, in the case of cassette tape decks, etc., there is a tendency to increase the number of functions, but at the same time, to reduce the size and weight. Recently, in response to this, devices with various functions such as an auto-repeat function, an auto-reverse function, and a program selection function have been manufactured to be relatively small and lightweight.

However, the above-mentioned cassette tape deck is still in the development stage, and there is a strong desire to improve the configuration of each part in order to make it even smaller and lighter to meet the needs of users. It is rare.

The present invention has been made based on the above circumstances, and provides an extremely good cassette tape recorder device that can effectively achieve miniaturization by making the mechanism for detecting the rotation of the reel organically configured without waste. The purpose is to provide

Hereinafter, an embodiment in which the present invention is applied to a cassette tape deck will be described in detail with reference to the drawings. That is, FIG. 1 shows the external appearance of the above-mentioned cassette tape deck, and in the figure, reference numeral 11 denotes a nearly box-shaped cabinet. Approximately at the center of the front panel 111 of this cabinet 11, there is a
A generally concave tape cassette storage section 12 is formed. The cabinet 11 is provided with a cassette lid 13 so as to close the opening of the tape cassette storage section 12. The cassette lid 13 is provided with a cassette holder (described later) on its inner surface, that is, on the inside of the cabinet 11, in which a tape cassette (not shown) can be stored in a substantially upright position. When the eject operator 14 is operated, the cassette lid 13 first protrudes parallel to the front panel 111 by a well-known mechanism, and then its upper end rotates around the lower end in the figure, and finally the cassette lid 13 protrudes parallel to the front panel 111. As shown in Figure 2, it is in the open state,
The tape cassette is attached and detached.

Here, the cassette lid 13 has a cassette tape see-through window 15 formed approximately at its center. The cassette lid 13 is provided with the following display section and operation section around the cassette tape see-through window 15, the detailed mounting means of which will be described later. That is, at the upper part of the cassette tape viewing window 15 in the figure, there are provided an electronic tape counter 16 for displaying the amount of tape travel and a reset button 17 thereof having a touch switch structure. Further, in the lower part of the cassette tape transparent window 15 in the figure, for example, a light emitting diode (hereinafter referred to as
A tape running direction display section 18 composed of an LED (referred to as an LED) or the like is provided. At the bottom of the tape running direction display section 18 in the figure, there is a rewind operator 19, a playback operator 20, a fast forward operator 21, a recording operator 22, a pause operator 23, a tape run stop operator 24, and a muting control. Operators 25 and the like are arranged laterally.

Each of these operators 19 to 25 has a touch switch structure, and the upper part of each operator 19 to 25 in the figure is used to display, for example, that the operator 19 to 25 is in an operating state. Display sections 26 to 32 each composed of an LED or the like are provided. Here, when the muting operator 25 is operated, the recording signal is muted. Therefore, when the muting operator 25 is operated in the recording state, the recording signal is muted and no longer recorded on the tape.

Further, on the left side of the cassette tape transparent window 15 in the figure, a tape recorder (not shown) is installed depending on the type of cassette tape used (normal tape, chrome tape, metal tape, etc.) and whether noise reduction (NR) processing is performed. Switches 33 to 36 having a touch switch structure for switching the characteristics of the circuit section are arranged in the vertical direction.
In the vicinity of these switches 33 to 36, display units 37 to 40, each comprised of, for example, an LED, are provided to display that each switch 33 to 36 is in an operating state. Each of these display sections 37 to 40 has characters such as "Normal", "Chrome", "Metal", and "NR" written on the front side of a translucent plate, and LEDs arranged on the back side of the plate. It is designed to display light by emitting light.

Furthermore, on the right side of the cassette tape see-through window 15 in the figure, there is a level display section 41 that displays the level of the recording signal to the tape, the playback signal from the tape, etc.
is provided. This level display section 41 is made up of a plurality of LEDs arranged vertically for each of the left and right channels, and changes from the lower LED to the upper LED in the figure according to the level of the recording and playback signals.
The LED lights up to display the level.

Note that the front panel 11 of the cabinet 11
1 is provided with a power switch 42, a recording level adjustment dial 43 for the left and right channels, an external microphone jack 44 for the left and right channels, and the like.

The cassette tape deck explained in this embodiment has been described above, and the specific structure of each part thereof will be explained in detail below. First, to explain the tape counter 16, this tape counter 16 is, for example, a three-digit electronic display type number display, each digit is composed of seven segments (LED) in the shape of a "day", and the desired number is displayed. The numbers are expressed by lighting up the segments. As shown in FIG. 2, the tape counter 16 is fitted into a tape counter mounting hole 131 formed in the cassette lid 13.

Here, the cassette holder 45 is integrally formed with the cassette lid 13, and a leaf spring 46 for holding down the tape cassette is provided inside the cassette holder 45. The connection electrode (not shown) of the tape counter 16 is connected to the upper rear end of the cassette holder 45 via a conductive wire 47 that is routed around the inner surface of the cassette lid 13 and the inner surface of the peripheral side wall of the cassette holder 45. The connecting terminal 48 is connected to a connecting terminal 48 protruding from the connecting terminal 48 .

On the other hand, inside the cabinet 11, a main chassis 49 of a tape recorder mechanism is installed parallel to the front panel 111. The main chassis 49 rotatably supports a pair of reel stands 50 (only one side is shown in FIG. 2), and is also equipped with a head mechanism 51 and a tape recorder mechanism 52, which are indicated by two-dot chain lines in the figure. . The main chassis 49 also includes a cassette lid 1.
A connecting terminal 53 is provided that contacts the connecting terminal 48 when the connecting terminal 3 is closed. This connection terminal 53 is connected to the output end of a tape counter control circuit 54.

Here, the tape counter control circuit 54 is
The pulses obtained each time the reel stand 50 rotates by a predetermined angle are sequentially counted by means to be described later with reference to FIG. 3, and the counted number is decoded and output as a display signal.

When the cassette lid 13 is now in the open state shown in FIG. 2, the tape cassette is mounted in the cassette holder 45 with the tape exposed surface facing upward in the figure, and the cassette lid 13 is closed. Then, the connection terminal 48 is brought into contact with the connection terminal 53, and the reel stand 50 is fitted into the reel hub of the tape cassette. In this state, the reel stand 50
When the reel table 50 is rotated to run the tape, a pulse is supplied to the tape counter control circuit 54 every time the reel stand 50 rotates by a predetermined rotation angle. Then, the tape counter control circuit 54 sequentially counts the pulses and outputs a display signal obtained by decoding the counted number. This display signal is connected to the connection terminals 53 and 48.
It is supplied to the tape counter 16 via a conductive wire 47, where the amount of tape travel is displayed.

Here, a means for detecting the rotation of the reel stand 50 mentioned above and generating a pulse every time the reel stand 50 rotates by a predetermined rotation angle will be explained. That is, as shown in FIG. 3, a tapered portion 501 is formed at the tip of the reel stand 50 so that the reel hub of the tape cassette 55 shown by the two-dot chain line in the figure can be easily inserted into the reel stand 50. . A magnet 56 is provided at a predetermined position of this tapered portion 501.

Further, a recess 132 is formed on the inner surface of the cassette lid 13 at a portion facing the tapered portion 501 of the reel stand 50 when the cassette lid 13 is closed. A Hall effect element 57 is provided at a predetermined position on the bottom surface of this recess 132. For this reason, the pulse is generated by utilizing the electromotive force generated in the Hall effect element 57 when the reel stand 50 rotates and the magnet 56 moves away from or approaches the Hall effect element 57. It is. Therefore, the tapered portion 501 of the reel stand 50
By providing a plurality of magnets 57 at regular intervals, a plurality of pulses can be generated during one rotation of the reel stand 50.

The rotation detection pulse signal of the reel stand 50 generated from the Hall effect element 57 is transmitted to the connection terminal 48 (not shown) which is connected in parallel to the aforementioned connection terminal 48 via a conductive wire 58 that is routed around the inner surface of the cassette lid 13. Supplied to the connection terminal. Further, the main chassis 49 is provided with a connection terminal (not shown) which is arranged parallel to the connection terminal 53 and comes into contact with the connection terminal to which the rotation detection pulse signal is supplied, and this connection terminal is connected to the tape counter control circuit 54. Connected to the input end.

For this reason, close the cassette lid 13 and open the reel stand 5.
0 is rotated, a rotation detection pulse signal generated from the Hall effect element 57 is transmitted to the tape counter control circuit 54 via the conductive wire 58 and both connection terminals.
are supplied and counted. Then, the tape running amount is displayed on the tape counter 16 as described above.

Further, the reset button 17 is attached by fitting or embedding a switch having a touch switch structure in the cassette lid 13 in the same way as the tape counter 16. It is connected to a connection terminal (not shown) arranged in parallel to the connection terminal 48 via a conducting wire (not shown) routed around the inner surface. The main chassis 49 is provided with a connecting terminal (not shown) which is arranged in parallel with the connecting terminal 53 and comes into contact with the connecting terminal connected to the reset button 17.
This connection terminal is connected to the clear input terminal of the tape counter control circuit 54.

Therefore, when the cassette lid 13 is closed and the reset button 17 is pressed, the tape counter control circuit 54 opens or shorts its clear input terminal by operating the reset button 17, and at this time, the tape counter control circuit 54 outputs a display signal from the output terminal. A signal is output to set all the displays on the counter 16 to "0", and the tape counter 16 is reset at this time.

Therefore, the tape counter 16 as described above
According to the rotation detection means of the reel stand 50 for mounting and displaying the amount of tape travel, first, since the tape counter 16 is provided near the cassette tape see-through window 15 of the cassette lid 13, the reel stand 50 actually The amount of tape wound on the tape and the amount of tape running displayed on the tape counter 16 can be viewed at the same time, making it easy to understand the relationship between the two and easily calculating the remaining amount of tape, for example. It is something that can be done. Furthermore, when the cassette lid 13 is closed and the connection terminals 48 and 53 come into contact, the display signal from the tape counter control circuit 54 is supplied to the tape counter 16. In this case, the tape counter 16 is not displayed.
This is also advantageous in terms of power consumption. In particular, regarding this point, if the display on the tape counter 16 is set to all "0" when the connecting terminals 48 and 53 are once separated and brought into contact again, the tape counter will automatically be displayed when the cassette lid 13 is opened and closed. 16 can be conveniently reset.

Conversely, if the content of the display signal output from the tape counter control circuit 54 is memorized when the cassette lid 13 is opened, when the cassette lid 13 is closed again and the tape is run, It is also possible to display the amount of tape travel by adding up the previous display content.

On the other hand, since the rotation of the reel stand 50 is detected using the magnet 56 and the Hall effect element 57, no unnecessary external force is applied to the reel stand 50.
Does not interfere with smooth running of the tape. Also,
Since a magnet 56 is provided on the tapered portion 501 of the reel stand 50 and a Hall effect element 57 is provided on the portion of the cassette lid 13 facing the tapered portion 501 to detect rotation, a separate rotation detection means is provided. It is not necessary to provide a space for this in the cabinet 11, which contributes to a reduction in size and weight, and allows for reliable rotation detection with an organic configuration.

As described above, the first and second members, that is, the magnets 56 that interact with the tip of the reel stand 50 and the portion of the cassette lid 13 that closely opposes the tip of the reel stand 50, Hall effect element 5
7 and 7 respectively to detect the rotation of the reel stand 50 is a feature of the present invention.

Here, the means for electrically connecting the tape counter 16 and the tape counter control circuit 54 may be as shown in FIG. 4. That is, the connection electrode of the tape counter 16 is connected to a connection terminal 481 protruding from the lower part of the cassette lid 13 in the figure, via a conductive wire 471 that is routed around the inner surface of the cassette lid 13. A connecting terminal 531 that can be contacted with the connecting terminal 481 is provided at the bottom of the cassette holder 45.
The output terminal of the tape counter control circuit 54 is connected to.

Here, the connection terminal 481 is made of an elastic material and is normally kept in a non-contact state with the connection terminal 531. When the tape cassette is mounted in the cassette holder 45, the weight of the tape cassette presses the connection terminal 481 downward in the figure, bringing both the connection terminals 481 and 531 into contact. Therefore, the tape counter control circuit 54
A display signal from the tape counter 16 is supplied to a tape counter 16, where the amount of tape travel is displayed.

Therefore, with the configuration shown in FIG. 4, it is possible to display the amount of tape travel with the tape cassette mounted in the cassette holder 45, regardless of whether the cassette lid 13 is open or closed. be able to. In addition, even in such a configuration, as described above, if the connection terminals 481 and 531 are once separated and brought into contact again, all the displays on the tape counter 16 will be set to "0", so that, for example, when the tape cassette is replaced, The tape counter 16 can be reset automatically. Furthermore, the content of the display signal output from the tape counter control circuit 54 is displayed when the tape cassette is inserted into the cassette holder 4.
If the tape cassette is memorized when the tape is taken out from the tape cassette, the amount of tape travel can be displayed by adding up the previous display contents when the tape cassette is replaced.

Here, the manner in which the tape running amount is displayed by the tape counter 16 is not limited to numerical display as described above, but may also be graphically displayed as shown in FIGS. 5a to 5c. That is, Figure 5a
What is shown is a plurality of LEDs 591, 592,...
..., 59n are arranged in a row in the horizontal direction in the figure, and the LEDs 591 and 59n on the left and right sides of the figure are sequentially lit up to the right and left sides of the figure as the tape runs in the forward and reverse directions. By doing so, the amount of tape travel is displayed. Furthermore, the components shown in FIGS. 5B and 5C can be explained in substantially the same manner as the components shown in FIG. 5A. however,
The one shown in Figure 5b is the LED 591 on the left side of the figure, regardless of whether the tape is running in the forward or reverse direction.
The tape lights up sequentially from the front to the right to display the amount of tape travel.

Next, FIGS. 6 to 8 show the reel stand 50
This shows another example for detecting the rotation of. First, to explain what is shown in FIG. 6, an LED 60 is attached to the tip of the reel stand 50,
A polarizing member 601 is attached to this LED 60 to make the irradiated light from the LED 60 slightly eccentric from the rotation axis of the reel stand 50 and emit the light. Further, the recess 132 is formed in a portion of the inner surface of the cassette lid 13 that faces the tip of the reel stand 50.
2 is provided with a phototransistor 602 at a predetermined position on the bottom thereof. The connection electrode of this phototransistor 602 is connected to the input end of the tape counter control circuit 54 as described above via a conductor 603 that is routed around the inner surface of the cassette lid 13. For this reason, the reel stand 50
rotates, and the irradiated light from the polarizing member 601 is received or not received by the phototransistor 602, whereby the phototransistor 60
2 is turned on and off, and a pulse is generated every time the reel stand 50 rotates a predetermined rotation angle.

Moreover, what is shown in FIG. 7 includes a pair of reel stands 5.
A magnet 604 is provided at a predetermined position on a flange 502 formed at the lower part of the reel stand 50 in the drawing. And the cassette holder 45
A protrusion 451 is formed near the flange 502 in the closed state, and a Hall effect element 605 is attached to the tip of the protrusion 451. The connection electrode of this Hall effect element 605 is connected to the input end of an IC (integrated circuit) 607 embedded in the inner surface of the cassette lid 13 via the protrusion 451 and a conductive wire 606 routed around the inner surface of the cassette holder 45. has been done.

Here, the above-mentioned IC 607 is formed by converting the above-mentioned tape counter control circuit 54 into an IC, and is actually an IC.
As a result, it is constructed so small that even if it is embedded in the cassette lid 13, it will not adversely affect the arrangement of other display sections and operation sections. And the above IC607
The output end of the tape counter 16 is connected to the connection electrode of the tape counter 16 via a conductive wire 608 that is routed around the inner surface of the cassette lid 13.

Therefore, according to the configuration shown in FIG. 7, first, the tape cassette 55 shown by the two-dot chain line in the figure is mounted in the cassette holder 45, and the cassette lid 13 is closed to allow the tape to run. Then, the magnet 604 provided on the collar 502 approaches or moves away from the Hall effect element 605 in accordance with the rotation of the reel stand 50, and as described above, the magnet 604 is moved from the Hall effect element 605 to the rotation of the reel stand 50. A corresponding pulse is generated. This pulse is IC60
7, and the counted number is decoded and supplied to the tape counter 16, where the tape running amount is displayed. Also, IC
The power supply voltage is supplied to 607 in the same way as the connection terminals 48 and 53 explained in FIG.
It can be obtained from a power supply circuit (not shown) in the cabinet 11.

Also with such a configuration, the rotation detection pulse signal of the reel stand 50 can be reliably obtained without applying unnecessary external force to the reel stand 50. Furthermore, since the tape counter control circuit 54 is integrated into an IC and embedded in the cassette lid 13, the structure is organic and wasteful, contributing to further reduction in size and weight.

Further, in FIG. 8, the same parts as in FIG. 7 are marked with the same symbols, as shown in FIG.
A magnet 604 is provided on the peripheral flat part of the magnet 60.
The protrusion 451 of the cassette holder 45 and the Hall effect element 605 are arranged so as to face the cassette holder 45.

Here, the rotation detection pulse signal generated each time the reel stand 50 rotates by a predetermined rotation angle as described above is not only used as a counting pulse for the tape counter 16, but also as shown in FIGS. 9a to 9c. It can also be used for other controls. First, what is shown in FIG. 9a is a pair of reel stands 5.
Rotation is detected from 0 and 50 by Hall effect elements 605 and 605, respectively, in the same manner as shown in FIG. And both Hall effect elements 605,
Pulses output from 605 are supplied to arithmetic circuit 613 via amplifier circuits 611 and 612, respectively. This arithmetic circuit 613 counts the pulses from both the Hall effect elements 605, 605, for example, per unit time, and calculates the ratio of the two counted values. Then, the arithmetic circuit 613
The output of is supplied to a control circuit 614, and the control circuit 614 operates the buck tension mechanism 615 according to the above ratio. This back tension mechanism 615 is capable of changing the back tension braking force applied to the reel stand 50 on the tape supply side when the tape is running in the forward direction, for example, and is controlled by the output from the control circuit 614. The above braking force is determined.

Therefore, the back tension can be changed according to the rotational speed of both reel stands 50, 50, and the optimal back tension can always be applied to the tape.

Further, in the device shown in FIG. 9b, the pulses output from both Hall effect elements 605 and 605 are passed through amplifier circuits 611 and 612 to an arithmetic circuit 61.
Supply to 6. This calculation circuit 616 counts the output pulses from both Hall effect elements 605, 605, for example, per unit time, and performs calculations so as to cause the tape counter 16 to display a display corresponding to the actual tape running length. . In other words, no matter how the tape is wound around the reel stands 50, 50, the length of tape travel is displayed in real time so that the length of tape travel when the tape counter 16 increases by one count is constant. is to be carried out. Note that the switch 617 of the arithmetic circuit 616 is for resetting.
This resets the calculation contents of the calculation circuit 616 and sets all the displays on the tape counter 16 to "0".

Furthermore, in the one shown in FIG. 9c, the rotation of one reel stand 50 is detected by a Hall effect element 605, and the pulses output from this Hall effect element 605 are supplied to a control circuit 618 via an amplifier circuit 612. . This control circuit 618 detects that the pulse from the Hall effect element 605 is no longer output for a predetermined period of time, and activates an automatic stop mechanism (ASO).
619 can be driven. In other words, when the tape reaches the end and the rotation of the reel stand 50 is stopped, the tape recorder mechanism section 52 can be brought into a non-operational state.

Therefore, by using the rotation detecting means of the reel stand 50 as described above, various types of control of the tape recorder can be performed.

Next, FIG. 10 shows the rewind operator 19, the playback operator 20, the fast forward operator 21, and the recording operator 2.
2. Pause operator 23, tape running stop operator 2
4 and the muting operator 25, and means for attaching the display sections 26 to 32 thereof. That is, each of the above-mentioned operators 19 to 25 has a touch switch structure, and is fitted and attached within operator attachment holes 191 to 251 formed at predetermined positions of the cassette lid 13. Further, the display sections 26 to 32 are also connected to the cassette lid 13.
It is fitted and attached within display section mounting holes 261 to 321 formed at predetermined positions.

The connection electrodes (not shown) of the operators 19 to 25 and their display portions 26 to 32 are connected to conductive wires 192 to 192 which are routed on the inner surface of the cassette lid 13 and the inner surface of the circumferential side wall of the cassette holder 45, respectively, at the upper part in the figure. 252, a connection terminal 193 protruding from the upper rear end of the cassette holder 45 in the figure.
to 253, respectively.

On the other hand, the main chassis 49 of the cabinet 11 is provided with connection terminals 194 to 254 that come into contact with the connection terminals 193 to 253, respectively, when the cassette lid 13 is closed. The connection terminals 194 to 254 are connected to the input end of an LSI 62 dedicated to tape recorder control. The output end of the LSI 62 is connected to the input end of the driving circuit 63. This driving circuit 63
Based on the output from the LSI 62, the tape recorder mechanism 52 is controlled to run or stop the tape in a predetermined state.

Now, install the tape cassette in the cassette holder 45 with the tape exposed surface facing upward in the figure as described above, and then attach each of the above-mentioned operators 19 to 25.
For example, assume that the playback operator 20 is operated.
Then, the touch switch constituting the playback operator 20 becomes conductive, and the conductor 20
2. LSI62 via connection terminals 203 and 204
The input terminal corresponding to the playback operator 20 is set to a high level (hereinafter referred to as H level), for example. For this reason, the LSI 62 outputs a control signal to the drive circuit 63 to put the tape recorder mechanism section 52 into a tape playback state. That is, this driving circuit 6
3, by driving a solenoid plunger (not shown) or the like, the recording/reproducing head (not shown) of the head mechanism section 51 is moved downward in the figure along the main chassis 49 and brought into contact with the tape, and the reel stand 50 is rotated. It operates to play back a tape.

At this time, since the touch switch constituting the playback operation element 20 is in a conductive state, the display section 27, which is commonly connected to the connection electrode of the playback operation element 20 via the conductive wire 202, lights up, and the tape is being played back. An indication of the status is displayed.

Furthermore, other operators 1 other than the playback operator 20
The operations when operating 9, 21 to 25 can also be explained in substantially the same manner as above.

Further, the display units 26 to 32 may be turned on after operating the operators 19 to 25 to determine whether the tape recorder mechanism unit 52 is in a predetermined operating state or a stopped state.

Here, FIG. 11 shows switches 33 to 33 for changing the characteristics of the tape recorder circuit section depending on the type of cassette tape (normal tape, chrome tape, metal tape, etc.) and whether or not noise reduction (NR) processing is performed. 36 is shown. That is, each of the switches 33 to 36 has a touch switch structure, and is fitted and mounted in switch mounting holes 331 to 361 formed at predetermined positions of the cassette lid 13, respectively. Although not shown in FIG. 11, each of the display parts 37 to 40 of the switches 33 to 36 also has a display part mounting hole (not shown) formed at a predetermined position of the cassette lid 13.
They are fitted and attached to each other.

The connection electrodes (not shown) of the switches 33 to 36 and their display parts 37 to 40 are
Connection terminals 33 are connected to the upper rear end of the cassette holder 45 through conducting wires 332 to 362 which are routed through the inner surface of the cassette lid 13 and the inner surface of the circumferential side wall of the cassette holder 45, respectively.
3 to 363, respectively.

On the other hand, the main chassis 49 of the cabinet 11 is provided with connection terminals 334 to 364 that come into contact with the connection terminals 333 to 363, respectively, when the cassette lid 13 is closed. The connection terminals 334 to 364 are connected to the control circuit 64. Here, the control circuit 64 switches the characteristics of the bias equalizer and the like depending on the normal tape, chrome tape, metal tape, and the presence or absence of noise reduction processing.

Assume that the chrome tape cassette is now installed in the cassette holder 45 and the cassette lid 13 is closed. In this case, the user first operates the switch 34 for the chrome tape. Then, as the switch 34 becomes conductive, the input terminal of the control circuit 64 corresponding to the switch 34 is set to the H level via the conductor 342 and the connection terminals 343 and 344, for example. For this reason, the control circuit 64
The signal path of the tape recorder circuit is switched so that the bias equalizer characteristics for recording and playback become compatible with chrome tape. Therefore, for example, when the recording operation element 22 is operated to enter the tape recording state, recording can be performed with bias equalizer characteristics suitable for chrome tape.

Also, at this time, since the switch 34 is in the conductive state, the display unit 38, which is commonly connected to the connection electrode of the switch 34 through the conductor 342, lights up, and the tape recorder circuit unit becomes compatible with the chrome tape. An indication that the switch is being made will be displayed.

Furthermore, when using a tape cassette other than the chrome tape cassette (normal tape cassette, metal tape cassette, etc.), it is sufficient to operate the switches 33 and 35, respectively. In addition, when recording with noise reduction processing on various tape cassettes (normal, chrome, metal), or when playing back tapes that have been subjected to noise reduction processing in advance, operate the switch 36. It's a good thing.

Therefore, as described above, each of the operators 19 to 2
5 and switches 33 to 36 and their display section 26
By providing 32 to 32 and 37 to 40 on the cassette lid 13, each operator 19 to 25 can be operated while watching the actual tape running or the tape running amount displayed by the tape counter 16, making the operation extremely easy. It is something. In addition, each of the above-mentioned operators 19 to 25 and switches 33 to 36
Since the display sections 26 to 32 and 37 to 40 are provided on the cassette lid 13, the area occupied on the front panel 111 of the cabinet 11 can be reduced, which can contribute to miniaturization as a whole. It is.

Furthermore, unless the cassette lid 13 is closed, the reel stand 50 will not rotate even if any of the operators 19 to 25 are operated.
Malfunctions can be prevented.

Next, FIG. 12 shows mounting means for the level display section 41. That is, as shown in FIG. 1 above, the level display section 41 is constructed by integrating a plurality of LEDs arranged vertically in FIG. 1 for each of the left and right channels into a unit. It is fitted into and attached to a level display attachment hole 411 formed at a predetermined position of the cassette lid 13. The connection electrode (not shown) of the level display section 41 is connected to the inner surface of the cassette holder 45 through a conductive wire 412 that is routed through the inner surface of the cassette lid 13 and the inner surface of the peripheral side wall of the cassette holder 45 at the upper part in FIG. It is connected to a connection terminal 413 protruding from the upper part of the rear end.

On the other hand, the main chassis 49 of the cabinet 11 is provided with a connecting terminal 414 that comes into contact with the connecting terminal 413 when the cassette lid 13 is closed. This connection terminal 414 is connected to the control circuit 65
connected to the output end of the Here, the control circuit 65 controls the level of the playback signal from the recording/playback head of the head mechanism section 51 and the level of the playback signal supplied to the recording/playback head from, for example, an external microphone (not shown) through the input terminal 651. Depending on the level of the recording signal, a level display signal is output that causes the LEDs of the left and right channels of the level display section 41 to sequentially light up from the bottom to the top in FIG. 1.

For this purpose, suppose that a predetermined tape cassette is now mounted in the cassette holder 45, the cassette lid 13 is closed, and the recording operator 22 is operated in order to record a signal from, for example, an external microphone onto the tape. Then, the signal from the external microphone is supplied to the recording/reproducing head of the head mechanism section 51 via the input terminal 651 and the control circuit 65, and is recorded on the tape. At this time, the control circuit 65 determines the level of the signal from the external microphone and outputs the level display signal according to the determined level. This level display signal is connected to connection terminal 4.
The signal is supplied to the level display unit 41 via the conductor 412 and the conductor 412, and the level is displayed for each left and right channel as described above. Then, while looking at this level display, the user adjusts the recording level adjustment dial 43 so that recording is performed at the optimum recording level.

Therefore, there is a level display section 4 on the cassette lid 13.
1 is provided, the level display is easy to see, and it is easy to grasp the tape running amount and the correspondence with the operators 19 to 25.
This is also advantageous in terms of miniaturization.

Here, FIGS. 13a and 13b show modified examples of the level display section 41, respectively. first,
In the device shown in FIG. 13a, level display sections 661 and 662 for the left and right channels are provided on both sides of the cassette tape viewing window 15 of the cassette lid 13. This level display section 661,6
62 is composed of a plurality of LEDs arranged vertically in the figure, and the level is displayed by sequentially lighting up the LED from the bottom of the figure upwards according to the level of the playback signal and recording signal. be. and,
Level adjustment switches 663, 664, and 66 are located below the level display sections 661, 662 in the figure.
5,666 are arranged respectively. These level adjustment switches 663 to 666 are provided in place of the recording level adjustment dial 43, and are configured as switches having a touch switch structure. Then, in the tape recording state, by operating the level adjustment switches 663 and 665, the recording level of the left and right channels can be increased, respectively.
By operating 66, the recording level of the left and right channels can be decreased respectively.

Moreover, the one shown in FIG. 13b is the cassette lid 1.
At the bottom of the cassette tape transparent window 15 in Figure 3, there are level display sections 671, 672 for the left and right channels.
It is designed to provide a. The level display sections 671 and 672 are each made up of a plurality of LEDs arranged horizontally in the figure, and are lit sequentially from the leftmost LED in the figure to the right according to the level of the playback signal and recording signal. The level is displayed. And the level display sections 671, 672
There are level adjustment switches 673, 67 at both ends of the
4, 675, and 676, respectively. These level adjustment switches 673 to 676
is provided in place of the recording level adjustment dial 43, and is comprised of a touch switch structure switch. In the tape recording state, by operating the level adjustment switches 674 and 676, the recording level of the left and right channels can be increased, and by operating the level adjustment switches 673 and 675, the recording level of the left and right channels can be increased, respectively. This is something that can be reduced.

Here, in the cassette tape deck shown in FIG. 1, the user operates the switches 33 to 36 to select the tape recorder circuit section according to whether or not normal tape, chrome tape, metal tape, and noise reduction processing have been performed. However, it is also possible to automatically perform these identifications and switch the characteristics of the tape recorder circuit section. Figure 14 shows an external view of a cassette tape deck that automatically identifies tape types such as normal tape, chrome tape, metal tape, and the presence or absence of noise reduction treatment. If the same parts are shown with the same symbols, the switches 33 to 36 are no longer necessary.

Below, a description will be given of means for automatically identifying the type of tape and the presence or absence of noise reduction processing and switching the characteristics of the tape recorder circuit section. That is, FIG. 15 shows the surface (back surface) opposite to the tape exposed surface of the tape cassette 55, and the well-known accidental erasure prevention claws 551 and 552 are provided at both ends of the tape cassette 55. 5
If 5 is for chrome tape, these are also well-known recesses 553 and 554 for chrome tape identification.
is formed. The tape cassette 55 is located approximately at the center of the back surface of the tape cassette 55.
5 is for a metal tape, a recess 555 for metal tape identification is formed. Also,
Approximately at the center of the back of the tape cassette 55, the above-mentioned accidental erasure prevention claw 551 is provided regardless of the tape type.
A noise reduction identification claw 556 having substantially the same configuration as 552 is provided.

That is, the accidental erasure prevention claws 551, 552 and the noise reduction identification claw 556 are provided on the tape cassette 55 regardless of the tape type (normal, chrome, metal), and when it is desired to record with noise reduction processing. , the noise reduction identification claw 556 is broken off and used. Further, if the tape type is normal tape, the recesses 553 to 555 are not formed, in the case of chrome tape, recesses 553 and 554 are formed but the recess 555 is not formed, and in the case of metal tape, the recess 555 is formed and the recess 553 is not formed. , 554 are not formed.

Here, as shown in FIG. 16, the display sections 37 to 40 are fitted and installed in display section mounting holes 371 to 401 formed at predetermined positions of the cassette lid 13, respectively. It is. The connection electrodes (not shown) of the display sections 37 to 40 are connected to the cassette holder 45 via conducting wires 372 to 402 which are routed along the inner surface of the cassette lid 13 and the inner surface of the peripheral side wall of the cassette holder 45 at the upper part in the figure. Connection terminal 37 protruding from the upper part of the rear end in the figure
3 to 403, respectively (the 17th
(see figure). Further, at the bottom of the cassette holder 45, as shown in FIG. 17, micro switches 681 to 683 are provided at positions corresponding to the recesses 553, 554 and 555 of the tape cassette 55 and the noise reduction identification claw 556, respectively. is provided. The microswitches 681 to 683 are connected to the input terminals of a control circuit 68 provided within the cabinet 11, the details of which will be described later.

On the other hand, as shown in FIG. 16 again, the connection terminals 373 to 4 are connected to the main chassis 49 of the cabinet 11 with the cassette lid 13 closed.
Connection terminals 374 to 40 in contact with 03, respectively
4 is provided. This connection terminal 374 to 4
04 are respectively connected to the output terminals of the control circuit 68.

Assume that a chrome tape cassette, for example, is now mounted in the cassette holder 45. Then, as described above, the recesses 553 and 554 are formed in the chrome tape cassette, but the recess 555 is not formed. Therefore, when installed in the cassette holder 45, the recess 553
Or, since 554 corresponds to the microswitch 681, the microswitch 681 remains in the off state. At this time, the micro switch 682
Since the recess 555 is not formed, the tape cassette comes into contact with the back surface of the tape cassette and is turned on. Then,
The control circuit 68 includes micro switches 681 and 682.
are turned off and on, respectively, so it is identified that a chrome tape cassette is installed, and a display signal is output to the connection terminal 384 corresponding to chrome tape, and the tape recorder circuit section is set to be compatible with chrome tape. Outputs a control signal to set the characteristics. When the cassette lid 13 is closed in this state, the connection terminals 374 to 404 and the connection terminals 373 to 403 are brought into contact with each other, and the display signal is transmitted via the connection terminal 383 and the conductive wire 382.
The signal is supplied to the display section 38. Therefore, the display section 38
lights up to indicate that a chrome tape cassette has been installed.

Here, if the noise reduction identification claw 556 is broken off before installing the chrome tape cassette in the cassette holder 45, the micro switch 683 will remain in the OFF state when the tape cassette is installed, and the control circuit 68 will be connected to the tape recorder. Switch the signal path of the circuit section so that it can perform noise reduction processing. Therefore, if recording is performed in this state, the recording will be performed with noise reduction processing applied. In addition, the noise reduction identification claw 5
If the tape cassette is inserted into the cassette holder 45 without breaking off the micro switch 6
83 is turned on, and the control circuit 68 switches the signal path of the tape recorder circuit section so as not to perform noise reduction processing. For this reason, normal recording is performed during recording.

Furthermore, when the metal tape cassette is installed in the cassette holder 45, the micro switches 681 and 682 are turned on and off, respectively, in substantially the same manner as described above.
The control circuit 68 determines that a metal tape cassette has been installed.
The characteristics of the tape recorder circuit section are switched. Furthermore, when the normal tape cassette is installed, since the recesses 553 to 555 are not formed, both the micro switches 681 and 682 are turned on, thereby controlling that the normal tape cassette is installed. This can be determined by the circuit 68.

Here, a liquid crystal display may be used as the various display sections provided on the cassette lid 13. FIG. 18 shows a configuration in which the cassette lid 13 is provided with a liquid crystal display. That is, the cassette lid 13 is made of a transparent plate 69 made of glass or the like, and each of the operators 1
Although not shown in FIGS. 9 to 25 and FIG. It has been installed.

At a predetermined position on the inner surface of the plate body 69,
A tape counter 161, a tape running direction display section 181, and display sections 262 to 3 each have a liquid crystal display.
22. Although not shown in FIG. 18, the display section 37
5 to 405, a level display section 415, etc. are provided (see FIG. 19). Furthermore, an IC 70 is provided at a predetermined position on the inner surface of the plate 69 to control the display of the various display sections having a liquid crystal display configuration.
Each connection electrode (not shown) of the various display sections is connected to the IC via a conductive wire 701 routed around the inner surface of the plate 69, as shown by dotted lines in FIG.
70.

Also, as shown in FIG. 18 again, the power supply end (not shown) of the IC 70 is connected to the bottom of the cassette holder 45 via a conductive wire 702 that is routed around the bottom of the cassette holder 45 attached to the plate 69. It is connected to a connection terminal 703 protruding from the lower middle rear end.

On the other hand, the main chassis 49 of the cabinet 11 is provided with a connecting terminal 704 that comes into contact with the connecting terminal 703 when the cassette lid 13 is closed. This connection terminal 704 is connected to the control circuit 7
Connected to 1. Then, the control circuit 71
For example, it counts the rotation detection pulse signal of the reel stand 50 and generates a display signal to be output to the tape counter 161, or it counts the level of a recording signal from an external microphone or the like supplied to the input terminal 711 or the level of a recording signal from the head mechanism section 51. detects the level of the reproduced signal, etc., and generates a level display signal to be output to the level display section 415, or determines the state of the tape recorder mechanism section 52, and generates a display signal to be output to the display sections 262 to 322. It is something to do.

In addition, although not shown, the connection electrodes of the respective operators 19 to 25 and switches 33 to 36, etc. are
It can be connected to the LSI 62, control circuit 64, etc. in the cabinet 11 in substantially the same way as shown in FIGS. 10 and 11 above.

Here, a blindfolding sheet 72 is attached to the front side of the plate 69. This blindfold sheet 72 includes the tape counter 161 of the liquid crystal display described above, the tape running direction display section 181, and the display section 2.
62 to 322 and 375 to 405, transparent windows 721 are formed in portions corresponding to the level display section 415. The blindfold sheet 72 also includes the respective operators 19 to 25 and switches 33 to 3.
6. A through hole 7 is provided in the part corresponding to the reset button 17, etc.
22 is formed.

Then, when the tape cassette is installed in the cassette holder 45 and the cassette lid 13 is closed, the power supply voltage and the various display signals are transmitted from the control circuit 71 to the IC via the connection terminals 704, 703 and the conductor 702. The display is performed using a liquid crystal.

Therefore, according to the configuration shown in FIG. 18, various display sections can be integrally formed with liquid crystal on the plate 69, and manufacturing and assembly can be easily performed.

Next, in FIG. 20, the electrical parts constituting the various display sections and operation sections are attached to a printed wiring board, and this printed wiring board is used as a cassette lid 13. That is, 73 in the figure is a printed wiring board, and approximately in the center thereof is a cassette tape transparent window 7.
31 is formed. On this printed wiring board 73, as shown in FIG.
2. Reset button 171, tape running direction display section 1
82, each operator 195 to 255, display section 263
Various electrical components such as switches 335 to 323, switches 335 to 365, display sections 376 to 406, and level display section 416 are provided.

Here, as shown again in FIG. 20, the printed wiring board 73 is covered with a transparent liquid 74, such as glass, over the various electrical components. Approximately U-shaped locking portions 741 and 742 are formed at the upper and lower portions of the plate 74 in the drawing, and are locked to the upper and lower end portions of the printed wiring board 73 as shown in the drawing. Then, the plate body 74
includes controls 195 to 255 and switch 335.
A through hole 743 is formed in a portion corresponding to the reset button 171, and each of the operators 195 to 255, the switches 335 to 365, and the reset button 171 can be operated from the outside by passing through the through hole 743. being done.

Furthermore, a blindfolding sheet 723 is attached to the surface of the plate 74. This blindfold sheet 723 includes the tape counter 162, the tape running direction display section 182, and the display sections 263 to 323.
A transparent window 724 is formed in the portions 376 to 406 corresponding to the level display section 416.
Furthermore, the blindfold sheet 723 includes the respective operators 195 to 255 and the switches 335 to 3.
65, a through hole 725 is formed in a portion corresponding to the reset button 171 and the like.

Here, a cassette holder 45 is attached to the plate 74 as shown in the figure. The circuit pattern 732 formed on the back side of the printed wiring board 73 connects to a connection protruding from the bottom of the rear end of the cassette holder 45 in the figure, via a conductive wire 733 that is routed around the bottom of the cassette holder 45. terminal 734
is provided.

On the other hand, the main chassis 49 of the cabinet 11 is provided with a connecting terminal 735 that comes into contact with the connecting terminal 734 when the cassette lid 13 is closed. This connection terminal 735 is connected to a control circuit 75 that performs substantially the same function as the control circuit 71 shown in FIG. 18 previously. However, although the control circuit 71 shown in FIG. 18 was for controlling the display section (that is, generating display signals), the control circuit 75 also controls the operation section. .

That is, the operation of the control circuit 75 related to the display section includes, for example, counting the rotation detection pulse signal of the reel stand 50 and generating a display signal to be output to the tape counter 162, and counting the rotation detection pulse signal of the reel stand 50 and generating a display signal to be outputted to the tape counter 162. It detects the level of the recording signal, the level of the playback signal from the head mechanism section 51, etc. and generates a level display signal to be output to the level display section 416, or determines the state of the tape recorder mechanism section 52 and displays the display sections 263 to 263. It also generates display signals to be output to the H.323. Also,
The operation of the control circuit 75 regarding the operating section includes, for example, identifying which of the operating elements 195 to 255 has been operated and controlling the tape recorder mechanism section 52 to a predetermined operation or stop state, or controlling the switches 335 to 365. It identifies which switch has been operated and changes the characteristics of the tape recorder circuit section, and also generates a display signal to be output to the corresponding display section 376 to 406. 16
It generates a display signal that makes the display of 2 all "0".

Therefore, according to the configuration shown in FIG.
Since it is used as the cassette lid 13, the structure is very organic and there is no waste, and manufacturing and assembly can be easily performed.

Here, FIGS. 22 to 24 each show a modification of the present invention, and hereinafter, parts having the same functions as those in FIG. 1 will be described with the same symbols.
First, the tape counter 1 shown in FIG.
6, reset button 17, tape running direction display section 1
8, Rewind operator 19, Play operator 20, Fast forward operator 21, Record operator 22, Pause operator 2
3. A tape running stop operator 24, display sections 26 to 31 and 37 to 40, etc. are arranged on the cassette lid 13. And switches 33 to 37
and the level display section 41 are arranged on the front panel 111.

In this way, it goes without saying that the display section and operation section provided on the cassette lid 13 and the display section and operation section provided on the front panel 111 may be arranged separately as desired.

23 and 24 show the case where the cassette tape viewing window 15 is not provided in the cassette lid 13. In the case shown in FIGS. That is, in this case, a display section 76 is provided approximately in the center of the cassette lid 13 to show the mounting state of the cassette tape in a simulated manner. This display section 76 has a plurality of LEDs 761 arranged in the shape shown in the figure, and uses the aforementioned rotation detection pulse signal of the reel stand 50 to sequentially light up each LED 761 in correspondence with the actual tape running. The tape is displayed graphically so that the user can visually recognize the tape running.

In addition, in FIG. 23, level adjustment switches 663 to 66 as shown in FIGS. 13a and 13b are used to adjust the left and right channel levels of the level display section 77.
Level adjustment switches 771 and 772 corresponding to switches 6 and 673 to 676 are provided. The level adjustment switch 771 is used to simultaneously raise the recording level of the left and right channels, and the level adjustment switch 772 is used to simultaneously lower the recording level of the left and right channels. Furthermore, the 24th
In the figure, level adjustment controls 78 for the left and right channels
1,782 as a sliding type, front panel 11
1.

In the above description, the cassette holder 45 is attached to the cassette lid 13, but the present invention is a cassette in which only the cassette lid 13 is opened and closed, and the tape cassette 55 is stored in the cabinet 11. Needless to say, the present invention can also be applied to tape recorders.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without departing from the gist thereof.

Therefore, as described in detail above, according to the present invention, by using the cassette lid, the mechanism for detecting the rotation of the reel has an organic structure without any waste, so that miniaturization can be achieved effectively. Therefore, it is possible to provide an extremely good cassette tape recorder device that can be achieved in a practical manner.

[Brief explanation of the drawing]

FIG. 1 is an external view showing a cassette tape deck to which the present invention is applied, FIG. 2 is a side sectional view showing a tape counter mounting means, and FIG. 3 is an embodiment of a cassette tape recorder device according to the present invention. a side sectional view showing rotation detection means of the reel stand;
FIG. 4 is a side sectional view showing another example of the mounting means for the tape counter, FIGS. The figures are side sectional views showing other examples of the rotation detecting means of the reel stand, and No. 9.
Figures a to c are block configuration diagrams showing means for utilizing the output obtained by the rotation detection means of the reel stand, respectively;
FIG. 10 and FIG. 11 are side sectional views showing the means for attaching the operator and switch to the display section, respectively;
Fig. 12 is a side sectional view showing the attachment means of the level display section, Fig. 13 a and b are front views showing modified examples of the display form of the level display section, and Fig. 14 shows the tape type and noise reduction processing. Fig. 15 is an external view showing a cassette tape deck equipped with means for automatically identifying the presence or absence of tape, etc.; 16 and 17 are a side sectional view and a block configuration diagram, respectively, for explaining the identification means such as the tape type and the presence or absence of noise reduction processing, and FIG. 18 and 1
Figure 9 is a side cross-sectional view and a front view showing the state in which the display section is composed of a liquid crystal, respectively, and Figures 20 and 21 respectively show various electrical components constituting the display section and operation section attached to a printed wiring board. A side sectional view and a perspective view showing a structure in which a printed wiring board is used as a cassette lid, and FIGS. 22 to 24 are external views showing modifications of the present invention, respectively. 11... Cabinet, 12... Tape cassette storage section, 13... Cassette lid, 14... Eject operator, 15... Cassette tape see-through window, 1
6...Tape counter, 17...Reset button, 1
8... Tape running direction display section, 19... Rewind operator, 20... Playback operator, 21... Fast forward operator, 22... Recording operator, 23... Pause operator, 24... Tape running Stop operator, 25...mutating operator, 26 to 32...display unit,
33 to 36... Switch, 37 to 40... Display section, 41... Level display section, 42... Power switch, 43... Recording level adjustment dial, 44
... External microphone jack, 45 ... Cassette holder, 46 ... Leaf spring, 47 ... Conductor, 4
8... Connection terminal, 49... Main chassis, 50
... Reel stand, 51 ... Head mechanism section, 52 ...
Tape recorder mechanism section, 53... Connection terminal, 54
... Tape counter control circuit, 55 ... Tape cassette, 56 ... Magnet, 57 ... Hall effect element, 58 ... Conductive wire, 591 to 59n ... LED,
60... LED, 62... LSI, 63... Drive circuit, 64, 65... Control circuit, 68... Control circuit, 69... Board, 70... IC, 71... Control circuit, 72... ...Blindfold sheet, 73... Printed wiring board, 74... Board, 75... Control circuit, 76...
...Display section.

Claims (1)

[Claims] 1. A tape cassette storage part in which an opening for attaching and removing a tape cassette is formed and a reel protrudingly fitted to the reel hub of the tape cassette; A cassette tape recorder device comprising: a cassette lid having a portion that closely opposes the tip of the reel in a closed state; 1. A cassette tape recorder device comprising: a first member and a second member which interact with each other; and are configured to detect the rotation of the reel.