JPH0611795U - Power supply device for toys - Google Patents

Abstract

(57) [Abstract] [Purpose] Eliminates the need to provide a battery holder or the like on the body of the toy, and enables interesting toy motions. [Structure] The transmitter 1 is provided with an oscillator 3 and a transmission coil 4, and an alternating magnetic field is generated from the transmission coil 4. Further, the toy body is provided with a receiving coil 7, and a current (pulsating current) is caused to flow through the LED 8 by electromagnetic induction from the transmitting coil 4,
Turn on D8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a toy power supply device suitable for use in a toy that emits light or sound.

[0002]

[Prior art]

 As toys of recent years, it is known that a battery and an LED or a buzzer driven by the battery are provided inside the toy so that the respective parts are caused to emit light or sound appropriately.

[0003]

[Problems to be solved by the device]

 However, in a conventional toy, it was necessary to mount a battery or the like on the toy itself, and thus it was necessary to provide a battery holder. On the other hand, some toys are made of a soft material such as vinyl chloride, so that the battery holder and the main body cannot be integrally molded, and a great number of steps are required to install the battery holder. In addition, operating a switch or the like provided on the toy to cause each part of the toy to emit light or sound is naturally predictable for infants and the like, and there is a problem that it does not attract much interest. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a toy power supply device that does not require a battery holder or the like to be provided in the main body of the toy and enables an interesting operation of the toy. .

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, in the present invention, a toy unit having a DC power supply unit, an oscillator driven by the DC power supply unit and outputting an AC current, and a transmission coil to which the AC current is supplied, and a toy. It is characterized by comprising a receiving coil provided in the vicinity of the surface of the main body and a load provided on the toy main body and connected to the receiving coil.

[0005]

[Action]

 When the oscillator outputs an alternating current, this alternating current flows in the transmitting coil, and an alternating magnetic field is generated around the transmitting coil. Next, when the transmitting coil is brought close to the receiving coil, a current flows through the receiving coil by electromagnetic induction by the alternating magnetic field, and this current is supplied to the load. Then, by appropriately changing the distance between the transmitting coil and the receiving coil, the current supplied to the load changes.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. In the figure, reference numeral 1 denotes a transmitter, which is provided therein with a battery 2, an oscillator 3 driven by the battery 2 to output an alternating current, and a transmission coil 4 to which the alternating current is supplied from the oscillator 3. Further, a micro switch 5 is inserted between the battery 2 and the oscillator 3 so that the oscillator 3 is driven only when the transmitter 1 is gripped. Next, 6 is a toy body, which is formed by integrally molding vinyl chloride or the like. A receiving coil 7 is provided at a predetermined position near the surface of the toy body 6, and an LED (light emitting diode) 8 is connected to the receiving coil 7.

In the above structure, when the transmitter 1 is gripped, the micro switch 5 is turned on, an alternating current is supplied from the oscillator 3 to the transmitter coil 4, and an alternating magnetic field is generated around the transmitter coil 4. Next, when the transmitter coil 4 is brought close to the receiver coil 7, an induced electromotive force due to the alternating magnetic field generated by the transmitter coil 4 is generated in the receiver coil 7. When this induced electromotive force is applied to the LED 8, a pulsating current flows through the LED 8 to turn on the LED 8. Then, when the distance between the transmitting coil 4 and the receiving coil 7 is changed as appropriate, the induced electromotive force generated in the receiving coil 7 changes, which changes the brightness of the LED 8.

The present invention is not limited to the above-described embodiment, and various modifications can be made as follows, for example. Modification 1 The internal circuit of the toy body 6 may be configured as shown in FIG. In FIG. 2, the output voltage of the receiving coil 7 is rectified by the diode 9, and a pulsating current is output via the diode 9. The pulsating current is supplied to the LED 8 to turn on the LED 8, and the battery 11 is charged via the resistor 10. According to the above configuration, when the transmitting coil 4 is brought close to the receiving coil 7, the LED 8 is turned on as in the embodiment. When the transmitter coil 4 is separated from the receiver coil 7, the battery 11 is discharged, and the lighting state of the LED 8 continues for a while. Needless to say, the load driven by the induced electromotive force of the receiving coil 7 is not limited to the LED 8 and may be, for example, a buzzer or the like.

Modification 2 The transmitter 1 and the toy body 6 in FIG. 1 may be configured as shown in FIG. In the figure, the oscillator 3 is constructed so that the oscillation frequency is about 40 kHz. Further, the receiving coil 7 and the capacitor 40 are connected in parallel, thereby forming a resonance circuit having a frequency of 40 kHz. According to the above configuration, since the oscillation frequency of the oscillator 3 and the resonance frequency of the resonance circuit match, the impedance in the resonance circuit becomes small and the power transmission efficiency from the transmission coil 4 to the reception coil 7 is improved. Is possible. According to the results of experiments conducted by the present inventors, the transmission efficiency of only using electromagnetic induction as shown in FIGS. 1 and 2 is about 30%, while the case of utilizing the resonance phenomenon as shown in FIG. It has been found that the transmission efficiency can be improved to about 70%.

[0010]

[Effect of device]

 As described above, according to the power supply device for a toy of the present invention, the transmitter and the oscillator are provided in the transmitter, and the receiver coil is provided in the toy body to supply the current to the load. There is no need to provide a holder or the like. In addition, the load can be driven without touching the toy body directly, and the drive state of the load can be changed by appropriately changing the distance between the transmitting coil and the receiving coil. Is.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of a toy according to an embodiment.

FIG. 2 is a circuit diagram showing a main part of a modified example of the embodiment.

FIG. 3 is a circuit diagram showing a configuration of a modified example 2 of the embodiment.

[Explanation of symbols]

 1 transmitter 2 battery (DC power supply) 3 oscillator 4 transmitter coil 6 toy body 7 receiver coil 8 LED (load)

Claims (1)

[Scope of utility model registration request] 1. A transmitter having a direct current power supply unit, an oscillator driven by the direct current power supply unit to output an alternating current, and a transmission coil supplied with the alternating current, and a receiver provided near the surface of the toy body. A toy power supply device comprising a coil and a load provided on the toy body and connected to the receiving coil.