JPS6319108Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a control device for a rotary vocal toy, which is particularly suitable for a merry-go-round and has a built-in electronic sound generator that reproduces and outputs a plurality of audio signals.

Traditionally, rotary vocal toys such as this type of merry-go-round have a mechanical music box built into the main body that rotates a drum with pins installed and plays a melody by playing a vibrating valve facing the pin. Along with the music, rotating objects such as decorations suspended below the main body are rotating. However, each of the above music boxes can usually only play one melody, and either the volume cannot be adjusted or an extremely complicated mechanism is used, making it difficult to attract attention, especially when the music box is intended for infants and young children. Toys that are not suitable for different uses such as cuddling and cuddling, or the volume of the toy is too loud even for the purpose of attracting attention, or the motion of the toy is too large, making it difficult to take advantage of the advantages of this type of toy itself. I couldn't do it.

SUMMARY OF THE PRESENT DISCLOSURE In view of the above drawbacks, an object of the present invention is to provide a control device for a rotating talking toy that can change the volume of sound output in accordance with the rotation speed of a rotating body.

A feature of the present invention is that it includes a built-in electronic sound generator that reproduces and outputs audio signals, and changes the reproduction output volume in response to the rotational speed of the rotating body that is switched.

The present invention will be explained below with reference to illustrated embodiments. To describe a rotating vocal toy in terms of a merry-go-round, as shown in FIG. 1, the rotating vocal toy has a cylindrical main body 1 commonly known as a curved ball, and a decorative rotating body 2 is suspended therefrom. The top of the main body 1 is configured to be attached to a ceiling or the like.

The main body 1 has a rotation transmission mechanism component, a motor M, a printed wiring board 4, and a switch built in a case 3 formed of a synthetic resin material or the like in a cylindrical shape, as shown in FIG. One hollow flange 5 of the rotation transmission mechanism A is rotatably supported by an operating shaft 6 on the inner lower side of the case 3, and a gear 5a is formed on the outer side of the upper end of the flange 5. The operating shaft 6 is mounted inside the case 3 so as to be vertically movable, and its lower side projects outward from a through hole in the case 3. A hook 61 is provided at the lower end of the operating shaft 6 to suspend the rotating body 2.
is attached. The operating shaft 6 within the flange 5 is urged upward by a spring 62, and is configured such that when the gear 5a is rotated by the motor M, the operating shaft 6 is rotated. A transmission lever 7 in the shape of a spring with a base end fixed within the case 3 is provided in the movement range above the operating shaft 6 so as to be able to be pushed up. The tip claw portion 7a of the transmission lever 7 faces the claw of the ratchet wheel 8.

The ratchet wheel 8 is rotatably mounted inside the case 3 via a shaft 81. The ratchet wheel 8 is provided with a plurality of pawls, which are rotated intermittently by the transmission lever 7. Further, a contact plate 9 is provided coaxially with the ratchet wheel 8 and rotates together with the ratchet wheel, and the contact plate 9 includes a plurality of brushes 92 having spring properties whose base ends are fixed to a support base 91 inside the case 3. The tip of the power switch is connected by sliding contact.
S ₀ is configured. The power switch _S0 is turned on and off by pulling down the operating shaft 6 when the pull string 2a hanging downward from the center of the rotating body 2 is pulled. It may be configured such that switching of a selection switch _S1 , a speed changeover switch _S2 , and a volume adjuster switch _S3 , which will be described later, is linked to the pull string operation.

The electronic sound generator 10 and amplifier 11 shown in FIGS. 3 and 4 are constructed on the printed wiring board 4, and a speaker 12 is attached to the case 3 at an appropriate position.

As shown in FIG. 3, the control device for the rotary vocal toy is such that the electronic sound generator 10 and the motor M are supplied with power from a battery E via a power switch _S0 and a speed changeover switch _S2, respectively. A resistor _R1 is connected between the fixed terminal h of the speed changeover switch _S2 and the motor M, so that when the common terminal e is switched to the terminal h, the motor M is rotated at a low speed. A song selection switch _S1 is connected to one side of the electronic sound generator 10. A volume control switch _S3 , an amplifier 11, and a speaker 12 are connected to the other output terminal. Volume adjuster is Switch S ₃
and a resistor R ₂ connected to a fixed terminal r,
It is designed to be operated in conjunction with the speed changeover switch _S2 . When the common terminal n of the switch _S3 is switched to the fixed terminal r, the output volume of the speaker 12 is adjusted to be low. Above selection switch S ₁
When the speed selector switch S ₂ and the volume adjuster switch S ₃ are provided independently of the power switch S ₀ , they are arranged at appropriate locations on the main body 1 .

As shown in FIG. 4, the electronic sound generator 10 includes a mode control 13, an address counter 14, a memory section 15, an oscillator 16, and a memory section 15.
two sets of programmable frequency dividers 17 connected to
18, envelope adding circuits 19 and 20 connected to programmable frequency dividers 17 and 18 and memory section 15, respectively, and a mixer 21. The output end of the mixer 21 is a volume control switch.
It is connected to the amplifier 11 and speaker 12 via _S3 .

The electronic sound generator 10 is a device that can automatically perform a melody sound by generating a melody sound using an electronic circuit, and information such as the pitch and length of the sound is stored in advance in the read-only memory of the memory section 15. Then, according to this data, the output pulse of the oscillator 16 is divided by programmable frequency dividers 17 and 18 to generate an AC voltage waveform with a frequency corresponding to each musical scale, thereby creating a melody with a tone equivalent to that of a music box. The electronic sound generator 10 is capable of playing sounds, and is made into an integrated circuit using digital circuits. The memory section 15 stores a plurality of audio data, such as programmed melody scale data and rhythm data for two songs, a lullaby and a light song. The audio data is arbitrarily selected by the selection switch _S1 . When the common terminal a of the selection switch _S1 is switched to the fixed terminal c, the mode control 13 sends a signal corresponding to the predetermined song "light song" to the address counter 1.
4 and read out by the memory section 15. The audio data in the memory section 15 is sequentially sent to the programmable frequency dividers 17 and 18 according to the control data of the address counter 14. The programmable frequency dividers 17 and 18 divide the reference signal generated by the oscillator 16 using the frequency division data from the memory section 15, and send the scale signal to the envelope adding circuits 19 and 2.
Send to 0. Envelope addition circuit 19, 20
adds an envelope to the scale signal generated by the programmable frequency dividers 17 and 18 as necessary using an envelope addition signal from the memory section 15, thereby improving the auditory effect. After passing through the mixer 21, this signal is amplified by the amplifier 11 and outputted by the speaker 12 as an audio signal. The programmable frequency divider 17 and the envelope addition circuit 19 are in charge of the main melody of the melody sound, and the programmable frequency divider 18 and the envelope addition circuit 20 are in charge of the accompaniment of the melody sound and are played simultaneously to produce a rich musical audio signal. is configured to provide. Selection switch S ₁
When the common terminal a is switched to the fixed terminal d, another song "Lullaby" is played.

As described above, a melody sound is played by the electronic sound generator 10, and the "light song" selection switch _S1
When the common terminal e of the speed selector switch S ₂ is switched to the fixed terminal g, the motor M rotates at high speed, and the volume adjuster switch S ₃ is linked to the common terminal n.
is switched to fixed terminal q, so light songs can be played at high volume. When you want to attract the attention of an infant, select "Lullaby" with the selection switch S ₁ , and change the common terminal e of the speed changeover switch S ₂ to the fixed terminal h, and the motor M will rotate at low speed and play the decoration. is rotated slowly, the volume control switch _S3 is linked to the speed changeover switch _S2 , the common terminal n is switched to the fixed terminal r, and the volume from the speaker 12 is reduced, creating an environment suitable for infants and young children. It can be a condition.

The volume adjustment in the above explanation can be done by changing the level by changing the amount of feedback of the amplifier 11 or by changing the degree of amplification by replacing the resistor _R2 , or by replacing the volume adjustment switch with a variable resistor to change the volume. You may let them. Further, the selection switch _S1 and the speed changeover switch _S2 may be replaced with circuits using semiconductor elements such as transistors. Further, the control circuit using the resistor _R1 that changes the rotational speed of the motor M may be replaced with a known speed control circuit. In addition to songs, the audio data stored in the memory section can also be the voices of insects or animals, the operating sounds of vehicles, etc. In addition to the merry-go-round, the rotating vocal toy described above may also be used for rotating vocal toys such as dolls and animals that move their hands, legs, etc.

Since the present invention is configured as described above, the volume is changed in accordance with the rotational speed of the motor that drives the rotating body, so, for example, when a child is being watched, the music is played quietly and the rotating body moves slowly. It can be adapted to the conditions for making it visible. In addition, when the child is active, the rotating body becomes more active and the volume of the voice becomes louder, increasing the interest of the child and adapting to the conditions for soothing. It is possible to provide a rotary vocal toy that has excellent practical effects, such as fully demonstrating its advantages as a toy.

[Brief explanation of the drawing]

The drawings show a control device for the rotary vocal toy of the present invention, FIG. 1 is an external view of a merry-go-round which is an example of a rotary vocal toy, FIG. 2 is a cross-sectional side view of the main body of the merry-go-round, and FIG. 3 is a control of the rotary vocal toy. FIG. 4 is a block diagram of the electronic sound generator. 1... Main body (curved ball), 2... Rotating body (decoration body), 2
a... Drawstring, 3... Case, 4... Printed wiring board, 5... Flange, 6... Operating shaft, 62... Spring, 7... Transmission lever, 8... Ratchet wheel, 10
...Electronic sound generator, 11...Amplifier, 12...Speaker, 13...Mode control, 14...
...Address counter, 15...Memory section, 1
6... Oscillator, 17, 18... Programmable frequency divider, 19, 20... Envelope addition circuit, 2
1...mixer, A...rotation transmission mechanism, M...motor, _S0 ...power switch, S1...selection switch, _{S2 ...} speed selection switch, _S3 ...volume adjuster switch.

Claims (1)

[Scope of utility model registration request] An electronic sound generator that generates an audio signal, an amplifier that amplifies the audio signal output of the electronic sound generator, a volume adjuster that changes the level of the audio signal of the amplifier, and a speaker connected to the amplifier. , comprising: a motor that drives a rotating body; a speed changeover switch that changes the rotational speed of the motor; and a speed changeover circuit that changes the rotational speed of the motor in conjunction with the switch; A control device for a rotary vocal toy, which is configured to operate in conjunction with a regulator to change the volume output from the speaker in accordance with the rotational speed of the motor.