JPH074855Y2 - Music box toys - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a music box toy in which a toy such as a doll moves by playing a melody, and in particular, an IC of an electronic circuit is used for a melody generator. .

And, this invention relates to a stage opening / closing mechanism in which the door opens and closes at the beginning and end of the melody performance, or the rotating stage returns from the back to the front and back again.

(Prior Art) When opening and closing a door or rotating a stage, it is a common practice to switch the power supply for moving this with a switch or a relay.

(Problems to be solved by the device) However, a special device is required to automatically move the stage such as the door in the performance of a music box like a mechanical clock. And in order to run on batteries for a long time, you have to reduce battery consumption as much as possible, and you cannot use relays for that.

The present invention provides a music box toy that can drive a desired door or stage by combining a cam that moves according to the audio output of a melody and a changeover switch associated with the cam.

(Means for Solving Problems) The music box toy of the present invention will be described with reference to FIG.

That is, an output signal relating to the audio of the melody circuit and an inverted output signal of this signal are transmitted to a motor drive circuit by a changeover switch, the changeover switch is changed over by a cam interlocked with the motor, and linked to the motor by the output signal of the audio. It is a music box toy that stops moving the mechanism.

(Operation) When a trigger signal is input to the melody circuit, a melody flows from this circuit. This becomes an output signal and moves the motor through the motor drive circuit. The motor rotates according to the output signal, but even if the melody stops and the output signal becomes 0, if the reverse output signal has a changeover switch, The motor rotates, but since the changeover switch is driven by the cam of the motor, the motor rotates or stops depending on the relationship with the cam. Therefore, the door and the stage connected to the drive of this motor can be moved at the beginning and the end of the melody by the relation between the cam and the changeover switch.

(Embodiment) The first embodiment will be described with reference to FIGS.

In FIG. 2, the melody circuit 1 is an IC in which a melody is stored. When a trigger signal is input, the melody is played and an output voltage is generated at the output of the circuit. The amplifier circuit 2 and the inverting amplifier circuit 3 are connected to this output section. The changeover switch 4 for switching between these two amplifier circuits 2 and 3 is
The motor 6 connected to the switching circuit 5 for driving the motor 6 drives the cam 7 as shown in FIG.
The changeover switch 4 is linked to the. A stage on which a toy ornament such as a doll is placed is connected to the camshaft 10.

The changeover switch 4 is provided at the point A of the cam 7 and the amplifier circuit 2
And is connected to the inverting amplifier circuit 3 at point B.

(Operation of Embodiment) Now, as shown in FIG. 2, the changeover switch 4 is connected to the amplifier circuit 2. At this time, the changeover switch 4 is at the point A of the cam 7 as shown in FIG. When an output signal is output from the melody circuit 1. The switch circuit 5 turns on and the motor 6 rotates. Then, the cam 7 interlocked with this motor rotates. The cam 7 makes a half rotation, and the point B operates the changeover switch 4 to switch the circuit. However, since the output voltage is still output from the melody circuit 1, no signal is output from the inverting amplifier circuit 3. Therefore, the motor stops. In the changeover switch 4, the time required for the point A to move to the point B is 1 to 2 seconds, which is extremely short, and the point A and the point B are located at 180 degrees, so that the cam 7 makes a half rotation. The ornament on the stage on this camshaft 10 will come out from the back to the front.

When the melody continues to ring for 10 to 20 seconds and then stops, the output voltage of the melody circuit 1 becomes 0, and this time the inverting amplification circuit 3
A signal is output from this, and the motor 6 is rotated by this signal,
The cam 7 makes a half turn, the stage turns to the back, the changeover switch 4 is operated at the point A of the cam 7, and the original amplifying circuit 2 is turned on again from the inverting amplifying circuit 3. At this time, the melody has already stopped, so the motor 6 also remains stopped.

FIG. 4 is a chart showing the above process, in which the cam position A → B is output from the melody output to the cam 7 via the amplifier circuit 2.
The time when the melody is output while B → T → B is rotating, the time when the cam 7 is stopped by the inverting amplifier circuit 3 is the time when the melody is stopped by the inverting amplifier circuit 3 while B → T → B is being rotated. The time when the cam 7 rotates and returns to the original state is shown.

During the playing time of the melody, the ornament on the rotating stage is moved by the motor (not shown) connected to the amplifier circuit 8 (see FIG. 2).

Next, in the music box toy of the present invention described above, the changeover switch 4 can change the power supply of the amplification circuit and the inverting amplification circuit so that the respective amplified outputs can be transmitted to the motor. FIG. 4 shows an example. is there. By switching the power supplies of the two amplifier circuits, the same operation as in the previous invention is achieved.

In this case, the power supply is not connected to the unnecessary amplifier circuit,
Power consumption can be reduced.

(Other Embodiments) Examples other than the embodiments mentioned in the description of the invention will be described. If a crank is attached to the cam shaft 10 shown in FIG. 2, a connecting rod is connected to this crank, and a door is further connected to this rod, the door opens and closes when the cam makes one rotation. Further, by providing a stage on this connecting rod, the stage can be reciprocated.

The two amplifier circuits are circuits for driving the motor,
Not required if the melody IC has this output section. Further, these amplifier circuits can be made by combining transistors and operational amplifiers.

(Effect of the device) This device can move the stage of decorations such as dolls and open and close the door at the beginning and the end of the melody performance with the above mechanism, and consumes less power. If it is simple, it can be applied to a music box clock.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a music box toy according to the present invention, FIG. 2 is a circuit diagram showing an embodiment, and FIG. 3 is a diagram showing the relationship between changeover switches and cams. FIG. 4 is a diagram showing a chart of the output of the circuit and a cam positional relationship. FIG. 5 is a circuit diagram according to another embodiment.

Claims (1)

[Scope of utility model registration request] 1. A non-inverting amplifier circuit and an inverting amplifier circuit are connected to an audio output section of a melody circuit, and these two amplified outputs are transmitted to a motor drive circuit by a changeover switch, and the changeover switch is formed by a cam interlocked with the motor. A music box toy that is switched and stops moving the mechanism linked to the motor according to the output signal of the audio.