JPH045068Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a tape recorder, and particularly to a switching device for a switch that controls power supply to an electric motor.

(B) Prior Art Generally, a tape recorder is configured to be able to perform various operations such as recording, playback, fast forwarding, and rewinding, and is equipped with operation buttons for performing each operation. However, in ultra-compact tape recorders, it is difficult to arrange the number of operation buttons corresponding to each operation, so some are configured so that one operation button can switch between two or more operations. . In addition, since such ultra-compact tape recorders use batteries as a power source, they are configured to cut off the power supply to the motor when they are in a stopped state, so when switching to each operating state, the power to the motor is cut off. It is necessary to switch the power switch that supplies the power. In a tape recorder configured to switch between two or more operations with a single operation button, operation switching is generally performed by displacing the operation levers in the stop position in opposite directions. Jitsukō 58-53712
The publication describes a technique in which fast-forwarding and rewinding operations are performed by displacing levers in non-operating positions in opposite directions, but this technique does not provide power to the electric motor. In order to change the switch for performing this, it is necessary to use two switches or a special switch as described in the publication.

(c) Purpose of the invention The present invention is a tape recorder switch that can switch between two or more operations with a single operation button and can control the power supply to an electric motor with a single switch. The aim is to provide equipment.

(d) Structure of the invention The invention consists of an operation switching plate which is at a stop position when in a stopped state and is displaced into a first operation position and a second operation position which are in opposite directions with respect to the stop position; a control member that is rotationally displaced in accordance with the displacement of the operation switching plate, is in a non-operating position when the operation switching plate is in a stop position, and is in an operating position when the operation switching plate is in a first operating position and a second operating position; and a power switch that is opened and closed by the control member and controls the power supply to the electric motor, and when the control member is in the operating position, the power switch is closed and the electric power is supplied to the electric motor. This is what I did.

(E) Embodiments The drawings all relate to the switch switching device of the present invention, and FIG. 1 is a plan view showing the stopped state, FIG. 2 is a plan view showing the playing state, and FIG. 3 is a plan view showing the rewinding state. , FIG. 4 is a plan view showing the recording state.
In the figure, 1 is a recording/playback magnetic head that operates as a recording head during recording and as a playback head during playback, and 2 is a magnetic head that is attached to a fixed board 3 by pins 4, 5, 6 and guide holes 7, 8, 9. The recording/playback magnetic head 1 is mounted so as to be movable in the directions of arrows A and B.
is a magnetic head mounting plate to which is fixed, and is biased by a spring 10 in the direction of arrow B, which is the stop position. 11 is the pin 1 on the fixed board 3.
2, 13 and guide holes 14, 15 to indicate arrow C.
It is an operation switching board that is attached so as to be able to be displaced in the D and D directions, and is also equipped with an operation button 16, and can be moved to a stop position, a playback operation position, a rewinding operation position, and a recording operation position, and can also be used for each operation. It has the function of switching the drive mechanism to a state for performing each operation when in the position. A lock member 17 is rotatably attached to the fixed base plate 3 by a shaft 18 and is biased to rotate counterclockwise by a spring 19, and is formed on the operation switching plate 11. The first recess 20, the second
It engages with the recess 21, the third recess 22, and the fourth recess 23 to move the operation switching plate 11 to the stop position, the regeneration operation position,
A lock portion 17a is formed to hold the rewinding operation position and the recording operation position. 24 is the fixed board 3
a control member which is rotatably mounted on the magnetic head mounting plate 2 by a shaft 25 and whose end portion 26 is connected to the magnetic head mounting plate 2 by a spring 27 having an elastic force greater than the elastic force of the spring 10; and a control recess 2 formed in the operation switching plate 11 when the operation switching plate 11 is at the stop position.
A switching roller 29 that engages with the switching roller 8 is rotatably mounted, and a switching protrusion 30 is formed. Reference numeral 31 denotes a power switch that is fixed to the fixed substrate 3 and controls power supply to an electric motor (not shown), and is formed on the control member 24 when the control member 24 is rotated to the operating position. They are connected to each other so as to be closed by a switching protrusion 30.

The switch changeover device of the present invention is constructed as described above, and its operation will be explained next. When the tape recorder is in a stopped state, as shown in FIG. is held in the stopped position. When the operation switching plate 11 is at the stop position, the switching roller 29 formed on the control member 24 is engaged with the control recess 28 formed on the operation switching plate 11. The control member 24 is therefore in an inactive position displaced counterclockwise, with the end 2 of the control member 24
The magnetic head mounting plate 2, which is connected to the magnetic head 6 by a spring 27, is displaced to a stop position in the direction of arrow B by the biasing force of the spring 10. Further, when the control member 24 is in the non-operating position, the switching protrusion 30 formed on the control member 24 is in a position apart from the contact portion 31a of the power switch 31, so that the power switch 31 is not activated. It is in an open state and no power is supplied to the motor.

When the operation button 16 is pressed in the direction of arrow D when the tape recorder is in a stopped state, the operation switching plate 11 is displaced to the playback operation position, and the operation switching plate 11 is moved so that the lock portion 17a of the locking member 17 is in the second recess. 21, it is held in the playback operating position. FIG. 2 shows a regeneration operation state in which such an operation is performed, and when the operation switching plate 11 is displaced to the regeneration operation position, the drive mechanism enters the regeneration state and the operation switching plate 11 is in a regeneration operation state. The switching roller 29 of the control member 24, which had been engaged with the control recess 28, is disengaged from the control recess 28, and the switching roller 29 comes into contact with the flat portion 11a of the operation switching plate 11. . When such an operation is performed, the control member 24 to which the switching roller 29 is attached is rotated clockwise about the shaft 25. When the control member 24 is rotated clockwise, the magnetic head mounting plate 2 connected to the end 26 of the control member 24 by a spring 27 is moved by the spring 1.
It is displaced in the direction of arrow A, which is the operating position, against the urging force of zero. When the magnetic head mounting plate 2 is displaced in the direction of arrow A, the recording/playback magnetic head 1 fixed to the magnetic head mounting plate 2 is moved to a magnetic tape (not shown) housed in a cassette (not shown). is moved to an operating position in which it contacts. Further, when the control member 24 is displaced clockwise to the operating position, the switching protrusion 30 formed on the control member 24 comes into contact with the contact portion 31a of the power switch 31, thereby closing the power switch 31. Power is supplied to the electric motor through the power switch 31, and the tape recorder enters the playback mode.

Switching from the stop state to the playback operation state is performed in this way, but when the operating button 16 is pressed in the direction of arrow D in the playback operation state, the operation switching plate 11 is displaced to the rewinding operation position, The operation switching plate 11 is connected to the lock portion 17a of the lock member 17.
is held in the rewinding position by engaging with the third recess 22 . FIG. 3 shows a rewinding operation state in which such an operation is performed, and when the operation switching plate 11 is displaced to the rewinding operation position, the drive mechanism enters the rewinding operation state. . Further, when the operation switching plate 11 is in the rewinding operation position, the control member 24 is in the operating position and the power switch 31 is closed, so power is supplied to the electric motor, and the tape recorder is in the rewinding operation state. become. When the recording/reproducing magnetic head 1 is held in contact with the magnetic tape during the rewinding operation, a so-called review operation in which rewinding is performed while reproducing the tape can be performed.

When the operation button 16 is pressed in the direction of arrow D from the playback state shown in FIG. 2, the tape recorder enters the rewinding state shown in FIG. 3 as described above. Operation button 1 according to the status
When 6 is pressed in the direction of arrow C, the reproducing operation state shown in FIG. 2 is achieved. Then, when the tape recorder is in the playback operation state shown in Figure 2, the operation button 1 is pressed.
6 in the direction of arrow C, the operation switching plate 11 is moved to the stop position shown in FIG. When the operation switching plate 11 is displaced to the stop position, a switching roller 29 formed on the control member 24 engages with a control recess 28 formed on the operation switching plate 11. When such an operation is performed, the control member 24 is rotated counterclockwise, so that the magnetic head mounting plate 2, which is connected to the end 26 of the control member 24 by the spring 27, is subjected to the biasing force of the spring 10. Therefore, it is displaced in the direction of arrow B, which is the stop position. Further, when the control member 24 is rotated to the non-operating position, the switching protrusion 30 formed on the control member 24 switches to the contact portion 31a of the power switch 31.
Since the distance is greater, the power switch 31 is opened. Accordingly, the power supply to the electric motor is cut off, the drive mechanism is brought to a halt, and the tape recorder is brought to a halt as shown in FIG.

As described above, switching from the stop state to the playback operating state and the rewinding operating state is performed. Next, the switching to the recording operating state will be explained. Switching to the recording operation state is performed by pressing the operation button 16 in the direction of arrow C when the apparatus is in the stopped state shown in FIG. When the operation button 16 is pressed in the direction of arrow C, the operation switching plate 11 is moved to the recording operation position, and the operation switching plate 11 is moved to the locking member 17.
The locking portion 17a engages with the fourth recess 23, thereby holding it in the recording operation position. Figure 4 shows
This shows the recording operation state in which such an operation has been performed, and when the operation switching plate 11 is displaced to the recording operation position, the drive mechanism enters the recording state and the control formed on the operation switching plate 11 is activated. Recess 2
The switching roller 29 of the control member 24 that had been engaged with the control member 8 is released from the control recess 28 , and the switching roller 29 is moved to the flat portion 11 of the operation switching plate 11 .
It comes into contact with b. When such an operation is performed, the control member 24, which has been in the non-operating position, is rotated clockwise to the operating position, and as described above, the magnetic head mounting plate 2 is displaced to the operating position in the direction of arrow A. Power switch 31 is closed. When the operation switching plate 11 is moved to the recording operation position, a recording/playback switch (not shown), which has the function of switching the amplifier circuit constituting the tape recorder between the recording state and the playback state, is switched to the recording side. As a result of this switching operation, the recording/reproducing magnetic head 1, which has been moved to the operating position as the magnetic head mounting plate 2 is displaced in the direction of arrow A, operates as a recording head, and the recording operation of the tape recorder is performed. will be carried out.

As described above, when the operation button 16 is pressed in the direction of arrow C from the stopped state, the operation switching plate 11 is displaced to the recording operation position, and the tape recorder enters the recording operation state. When the button 16 is pressed in the direction of arrow D, the operation switching plate 11 is moved to the stop position shown in FIG. 1, and the tape recorder is brought to a stop state.

In this embodiment, the recording operation is performed when the operation switching plate 11 is displaced from the stop position in the direction of arrow C, but it is also possible to perform a fast forward operation.

(F) Effects of the invention The switch switching device of the invention is applicable to a tape recorder equipped with an operation switching plate that switches to a different operating state by being displaced in opposite directions relative to a stop position. A control member is provided which causes the magnetic head to move to the same operating position no matter which operating position it is displaced to, and which also displaces the magnetic head mounting plate to which the recording/playback head is fixed to the operating position, and by the displacement operation of the control member. In other words, the power switch is opened and closed using a control member that operates to displace the magnetic head mounting plate to the operating position. With this configuration, not only are there no need for a plurality of switches or a switch with a special configuration as a power switch, but the configuration is also simple, and the practical value of the present invention is extremely high.

[Brief explanation of drawings]

The drawings all relate to the switch switching device of the present invention; FIG. 1 is a plan view showing the stopped state, FIG. 2 is a plan view showing the playing state, FIG. 3 is a plan view showing the rewinding state, and FIG. 4 is a plan view showing the rewinding state. FIG. 2 is a plan view showing a recording state. Explanation of main drawing numbers, 1...Magnetic head for both recording and playback, 2...Magnetic head mounting plate, 3...Fixed board,
11...Operation switching board, 16...Operation button, 17...
Lock member, 24...Control member, 28...Control recess, 29...Switching roller, 30...Switching protrusion, 31...Power switch.

Claims (1)

[Scope of utility model registration request] A magnetic head mounting plate has a recording/playback magnetic head fixed thereon and is movable between a stop position and an operating position where the magnetic head contacts the magnetic tape; an operation switching plate that is displaced into a first operating position and a second operating position that are opposite to each other with respect to the stop position, and has a control recess formed therein; and when the operation switching plate is in the stop position. A switching roller that engages with the control recess is provided, and the engagement state between the switching roller and the control recess is released as the operation switching plate is displaced to the first operating position and the second operating position. a control member that is displaced from a non-operating position to an operating position by the control member; and a power switch that is opened and closed by the control member and controls the power supply to the electric motor;
A tape recorder characterized in that the magnetic head mounting plate is moved to the operating position by the displacement operation of the control member to the operating position, and the power switch is closed to supply power to the electric motor. Switch switching device.