JPS5818385Y2 - tape recorder - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tape recorder in which a microphone is attached to the tape recorder body so that it can be freely moved in and out. In addition, the sensitivity of the microphone is also automatically switched in relation to the input/exit of the microphone to enable good recording.

Recently, it has become common for portable tape recorders to be equipped with a built-in microphone, but in most cases, this built-in microphone is fixed to the main body of the tape recorder.

Therefore, in the recording state, this type of tape recorder mainly records the sound in front of the microphone, and does not take into account the sounds from the sides and rear, which tends to result in insufficient sensitivity.

In order to overcome this lack of sensitivity, some tape recorders have a built-in microphone that is manually pushed out from the tape recorder body, but with this tape recorder, the built-in microphone can be freely pushed out even during playback, regardless of the recording operation of the device, making it visually appealing. The recording condition is unclear and gives the user an unnatural feeling.

The present invention solves this inconvenience by making the built-in microphone protrude from the tape recorder body when the recording button is operated, making the recording status visually clear, and changing the sensitivity of the microphone accordingly. The sensitivity of the built-in microphone can be selected depending on the application.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, 1 is the casing of the tape recorder, 2 is a removable microphone attached so that it can protrude outside through an opening 3 provided in the casing 1, and 4 is a microphone holder integrally provided on the bottom side of the microphone. The microphone holding member 4 is biased by a compression coil spring 5 in a direction in which the microphone 2 protrudes outside the housing.

Reference numeral 6 denotes a locking member that prevents the microphone 2 from protruding and moving due to the spring 5 and holds the microphone 2 in the position housed in the housing 1. It is rotatable to the right in the figure, that is, clockwise, against the clockwise rotation biasing force.

Reference numeral 9 denotes a protrusion that prevents the lock member 6 from rotating to the left, that is, counterclockwise.

A pin 10 is installed at one end of the locking member 6.

11 is a sensitivity changeover switch for the microphone 2;

The microphone holding member 4 has an engaging piece 12 that engages with the locking member 6 and a sensitivity switching operation piece 13 that operates the sensitivity switching inch 11.

Reference numeral 14 represents a recording/playback selection lever, and 15 represents a recording/playback selection switch.

A lock release lever 17 that rotates around a support shaft 16 is attached to the recording/playback switching lever 14 .

Although the lock release lever 17 is urged to rotate clockwise by a tension spring 18 at one end, rotation is prevented by a protrusion 19 provided on the recording/playback switching lever 14.

The operation of the above configuration will now be described.

Now, in a state other than a recording state, such as a playback state, the state is as shown in FIG.

That is, the engaging piece 12 of the microphone holding member 4 is engaged with the locking member 6, and the microphone 2 is housed in the housing and held in position.

At this time, when the recording button (not shown) is pressed to perform a recording operation, the recording/playback switching lever 14 changes from the playback position to the recording position (
In the figure, the recording/playback changeover switch 15 is switched to the recording position.

At this time, the lock release lever 17 on the recording/playback lever 14 also moves to the left at the same time.

During this movement process, the lock release lever 17 hits the pin 10 set in the lock member 6, but the lock release lever 17
Since the pin 7 is prevented from rotating clockwise by the protrusion 19, it does not rotate, and the pin 10 is held to the left.

As a result, the lock member 6 is rotated clockwise about the support shaft 7 against the biasing force of the spring 8.

As a result, the microphone holding member 4, which is engaged with the other end of the locking member 6, is disengaged from the engagement piece 12, and the microphone holding member 4 protrudes outward from the housing 1 due to the biasing force of the spring 5. move in the direction.

Due to this movement, the sensitivity switching/actuating section 13 of the microphone holding member 4 pushes up the movable piece 11a of the sensitivity changeover switch 11 to turn the switch 11 from the on state to the off state, thereby switching the sensitivity of the microphone 2.

In this way, the microphone 2 protrudes to the outside of the tape recorder housing 1 in conjunction with the recording operation, as shown in FIG. 2.

Note that when the recording/playback switching lever 14 is completely switched to the recording side, the lock member 6 and the lock release lever 17 are in a disengaged device, and the lock member 6 is rotated counterclockwise by the spring 8. , it has returned to its original position where it abuts against the rotation prevention protrusion 9.

If you want to change the sensitivity in this recording state, by manually pushing the microphone 2, the engagement between the movable piece 11a of the sensitivity changeover switch 11 and the sensitivity changeover actuating part 13 is released, and the switch 11 has two pieces 11a and 11b. It returns to the on state of contact and the sensitivity of the microphone is switched to its original state, and the engaging piece 12 and the locking member 6 are engaged and the microphone 2 is held in the housed state again, and the audio is transmitted to the housing 1.
The sound introduction hole 2 of the microphone 2 is only connected to the sound collection window 20 of the
Enter a.

Next, when an operation such as stopping is performed from this recording state, the recording/playback switching lever 14 moves to the right as indicated by the arrow in FIG. 2, that is, from the recording position to the playback position, and the recording/playback switch 15 is switched to the playback side.

At this time, the lock release lever 17 is released from the pin 1 of the lock member 6.
0, but since the locking member 6 is prevented from rotating by the rotation preventing protrusion 9, the pin 10 does not move, and the lock release lever 17 moves counterclockwise around the support shaft 16 against the biasing force of the spring 18. When the pin 10 and the lock release lever 17 are rotated in the direction shown in FIG.
Return to the original position as shown in the figure.

In this manner, the lock release lever 17 transmits the operation to the locking member 6 when changing from the playback state to the recording state, but does not exert any influence on the locking member 6 when moving from the recording state to the playback state.

FIG. 3 relates to a sensitivity switching circuit for switching the sensitivity of a microphone, and parts common to those in FIGS. 1 and 2 are given the same numbers.

Reference numeral 2 is a microphone, and reference numeral 11 is a sensitivity selector switch, which turns on and off in conjunction with the insertion and removal of the microphone 2.

21 is a recording amplifier, 22 is a recording head, and 23 is a dividing resistor. When the sensitivity changeover switch 11 is turned on, the input from the microphone 2 is divided by the dividing resistor 23, and the sensitivity is reduced.

Of course, it is easily possible to reverse the sensitivity of the microphone when it is protruded and when it is retracted.

As described above, the present invention allows recording through the sound collection window located within the microphone tape recorder body, while also allowing recording with the microphone protruding from the tape recorder body.

Furthermore, the microphone can be made to protrude from the tape recorder in conjunction with circuit switching during recording operations, and the sensitivity at this time and the sensitivity when the microphone is housed inside the main body can be automatically adjusted according to the movement of the microphone. It is possible to switch to the optimum recording condition.

In this way, the present invention simplifies the operation during recording and can automatically set the sensitivity according to the microphone position.
It is possible to provide an excellent tape recorder that can realize optimal recording conditions with easy operation.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a state in which a microphone of a tape recorder according to an embodiment of the present invention is housed in a housing, FIG. Figure 3 is a circuit diagram for changing the microphone sensitivity of the same tape recorder. 1...--Housing, 2...--Microphone, 6
......Lock member, 11...- Sensitivity selection switch, 14... Recording/playback selection lever.

Claims (1)

[Scope of utility model registration request] It is held by the holding member and has a first position behind the sound collection window of the tape recorder main body and a second position that protrudes outside the tape recorder main body.
a microphone that is movable between positions, a spring that always presses the holding member in the direction from the first position to the second position, a retaining piece provided on the holding member, and a sensitivity switch. an actuating section; a sensitivity changeover switch that is actuated by the sensitivity changeover actuation section to switch between a first sensitivity and a second sensitivity when the microphone moves between a first position and a second position; a locking member that engages with the engaging piece of the holding member when it is in position 1 and holds that position; a lever that is driven in one direction by a recording operation and driven in the opposite direction when recording is stopped; a recording/playback selector switch that is switched in conjunction with a lever, and a locking member that is operated in conjunction with the movement of the lever during recording to release the engagement with the engagement piece and protrude to a second position. When the microphone is pushed into the first position, the lock release part becomes independent of the operation of the lock member when the lock member is engaged, and the lever is driven during recording operation to switch recording and playback. At the same time as switching the switch,
The lock release part is driven to release the engagement between the lock member and the retaining piece, and the spring force moves the microphone from the first position to the second position.
position, and change the sensitivity changeover switch using the sensitivity changeover operating section to enter a recording state with the second sensitivity;
From a recording state in which the microphone is at a second position with a second sensitivity, the microphone is pushed against the force of a spring to engage an engaging piece with a locking member to hold it at the first position, and the sensitivity is switched. 1. A tape recorder characterized in that the sensitivity changeover switch is changed over by the section to create a recording state at a second sensitivity at a first position.