JPH0724207U - Hair Dryer - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a hair dryer having a turbo means for both domestic and overseas use. [Structure] A voltage switching means 5 capable of responding to power sources having different voltages, a blower motor 4 and a plurality of heaters 1
It is a domestic / overseas combined hair dryer provided with 2.3, and the power source switching switch 7 can be switched between HI and LOW through the half-wave rectifying diode 6 in addition to being turned on. A hair dryer is provided with a turbo means 11 which is configured by connecting a resistor 9 connected in series to the blowing motor 4 and a short-circuiting switch 10 capable of short-circuiting both ends of the resistor 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hair dryer that can be used not only in Japan but also in foreign countries where the voltage is different, and can increase the air blowing function by increasing the motor speed.

[0002]

[Prior art]

Conventionally, as shown in the circuit diagram of FIG. 2, hair dryers for both domestic and overseas use are connected with _three heaters, heater 1 (H ₁ ), heater 2 (H ₂ ), and heater 3 (H ₃ ). _They are connected in series at points h ₁ and h ₂ , and their resistance values are set so that the sum of heater 1 and heater 2 is equal to that of heater 3, and the connection point h _{0 at} both ends of the heater 1 The blower motor 4 is connected in parallel to h _1, and the value of the voltage drop of the heater 1 becomes the voltage applied to the blower motor 4 as it is. Due to the resistance setting, the voltage between the connection points h ₀ and h _{2 at} both ends of the heater 1 and the heater 2 connected in series is equal to the voltage between the connection points h ₂ and h _{3 at} the both ends of the heater 3. , Half the total voltage on the power supply D side.

The connection points h ₀ and h _{3 at} both ends where the heaters 1, 2 and 3 are connected in series are connected to the terminals S ₁ and S ₂ of the voltage switching switch 5, and the voltage switching switch is connected. The terminal S ₃ of 5 is connected to _one side D _{1 of the} power source D through the half-wave rectifying diode 6 or directly through the contacts 7a and 7b of the power source switching switch (also serving as a HI / LOW switching switch) 7. Also, the terminal S ₄ of the voltage changeover switch 5 ₁ is connected to the connection point h ₂ of the heater 2 and the heater 3.

The terminal S ₁ of the voltage changeover switch 5 is connected to the other side D ₁ of the power source D via a thermostat 8, and the thermostat 8 is used when the motor of the hair dryer is stopped. This is a device to prevent excessive temperature rise that automatically shuts off the power when the internal temperature becomes abnormal due to blockage of the air outlet, suction port, etc.

FIG. 3 is a contact explanatory view of a power source changeover switch 7 according to a conventional example. In the state A in the figure, all of the contact points 7a and 7b are open, so that the power source is turned off. Has a binary value of an ON state, one is HI and the other is LOW. Further, in the state of B in the figure, the contact 7a is opened and the contact 7b is closed, so that the power source passes through the half-wave rectifying diode 6, becomes a half-wave waveform, and becomes a LOW state. Therefore, in this LOW state, the heaters 1, 2 and 3 and the blower motor 4 are all affected by the half-wave rectifying diode 6, and the heating and blown air amount is reduced to half that in the HI state. Further, in the state in the figure C is closed all the contacts 7a · 7b is, the half-wave rectifying diode 6 is short-circuited at both ends in contact 7a of S ₃ and the power switch 7 of the voltage switching switch 5 As a result, the power supply voltage is applied as it is to the HI state.

FIG. 4 is an explanatory view of the open / closed state of the contacts when the voltage changeover switch according to the conventional example is switched to the low voltage for domestic and overseas, and the voltage changeover switch 5 has the contact between the terminals S ₁ and S ₂ closed. , The contacts between terminals S ₂ and S ₃ are open, and the contacts between terminals S ₃ and S ₄ are closed. As a result, as shown in the circuit diagram of the heater when the voltage selector switch in Fig. 5 is switched to domestic and overseas low voltage, the heater is connected to the heater 1 and the heater 2 at the connection point. Since the connection points h ₂ and h ₃ at both ends of the heater ₃ are connected in parallel to the connection points h ₀ and h ₂ at both ends connected in series with h ₁ , the power supply voltage of 100 V to 120 V in Japan and The circuit is suitable for low voltage overseas.

FIG. 6 is an explanatory view of the open / closed state of the contacts when the voltage changeover switch according to the conventional example is changed over to high voltage overseas. The voltage changeover switch 5 opens the contact between terminals S ₁ and S ₂ , The contact between S ₂ and S ₃ is closed, and the contact between terminals S ₃ and S ₄ is open. As a result, as shown in the circuit diagram of the heater when the voltage selector switch in Fig. 7 is switched to the high voltage for overseas, the heaters are connected to the heater 1, heater 2, and heater 3 at the connection point h _1. all in h ₂ are connected in series, to the connection point h ₀ · h ₃ at both ends thereof, a circuit suitable for the case of high pressure of the foreign applying a voltage 200V～240V. In this case, the voltage across the heater 1 and the heater 2 is half the power supply voltage, and the voltage across the blower motor 4 is equal to the voltage across the connection points h ₀ and h ₁ across the heater 1. Since the same conditions as when using the domestic and overseas low-voltage power supplies are used, the hair dryer can be used both domestically and internationally.

[0008]

[Problems to be solved by the device]

 However, in this hair dryer for both domestic and overseas use, the voltage applied to the blower motor 4 is always constant due to the voltage across the heater 1. Therefore, the blower motor 4 can only obtain a constant rotation, and the number of rotations can be varied. There was a problem that it could not respond to the change. The present invention is intended to provide a hair dryer which aims to solve the above conventional problems.

[0009]

[Means for Solving the Problems]

 The present invention is a hair dryer for domestic and overseas use, which has a voltage switching means capable of responding to power sources with different voltages, and is equipped with a blower motor and a plurality of heaters. The above-mentioned problems have been solved by adopting a means including a resistor connected in series and a turbo means constituted by connecting both ends of this resistor with a short-circuiting switch capable of being short-circuited.

[0010]

[Action]

 According to the present invention having the above-mentioned structure, the voltage switching means operates to switch between domestic and overseas 100-120V having a low power supply voltage and overseas 200-240V having a high power supply voltage. The turbo means operates so as to improve the function of the blower motor by short-circuiting both ends of the resistor connected in series with the blower motor with a short-circuiting switch.

[0011]

【Example】

 An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a circuit diagram showing an embodiment of the present invention, in which 1 is a heater (H ₁ ), 2 is a heater (H₂) 3 is a heater (H₃), The heaters 1, 2 and 3 are connected at the connection point h₁・ H₂Are connected in series, and the sum of the resistance values of the heater 1 and the heater 2 is set equal to the resistance value of the heater 3. Further, a fan motor 4 and a resistor 9 (R) arranged in series are connected in parallel to the heater 1, and a short circuit switch 10 capable of opening and closing short circuit is connected to the resistor 9 in parallel. It is connected to the. The voltage of the blast motor 4 and the resistor 9 connected in series is equal to the connection point h at both ends of the heater 1.₀・ H₁Since it is equal to the voltage applied between them, the voltage of the blower motor 4 drops less than the voltage of the heater 1 by the amount of the resistor 9.

However, a short-circuiting switch 10 is connected in parallel to both ends of the resistor 9, and when the short-circuiting switch 10 operates, the contacts are closed to short-circuit the resistor 9 and the resistance value becomes zero. Therefore, the voltage applied to the blower motor 4 can be made equal to the voltage of the heater 1.

Therefore, when the short-circuit switch 10 is open, that is, when the rotation of the blower motor 4 when the resistor 9 is not short-circuited is used as a reference, the short-circuit switch 10 is closed and the resistor 9 is short-circuited. During this time, the voltage rises and the rotation of the blower motor 4 becomes faster, so that the resistor 9 and the short-circuiting switch 10 constitute the turbo means 11. The resistor 9 of the turbo means 11 may be a fixed resistor having a constant resistance value or a variable resistor having a variable resistance value, and further has another resistance function also as a heater. It does not matter.

The connection points h ₀ · h _{3 at} both ends where the heaters 1, 2, 3 are connected in series are connected to the terminals S ₁ and S ₂ of the voltage switching switch 5, and the voltage switching switch is connected. The terminal S ₃ of 5 is connected to _one side D _{1 of the} power source D through the half-wave rectifying diode 6 or directly through the contacts 7a and 7b of the power source switching switch (also serving as a HI / LOW switching switch) 7. Also, the terminal S ₄ of the voltage changeover switch 5 ₁ is connected to the connection point h ₂ of the heater 2 and the heater 3.

The terminal S ₁ of the voltage changeover switch 5 is connected to the other side D ₁ of the power source D via a thermostat 8, and the thermostat 8 is used when the motor of the hair dryer is stopped. This is a device to prevent excessive temperature rise, which automatically shuts off the power when the internal temperature becomes abnormal due to blockage of the air outlet, suction port, etc.

The turbo means 11 according to the present invention is different from the LOW state of the conventional power switch 7 in that the conventional LOW state includes all the heaters 1, 2 ... While the heating function of No. 3 and the blowing function of the blowing motor 4 are halved, the turbo means 11 of the present invention keeps the heating functions of all the heaters 1, 2 and 3 and blows the blowing motor 4 blower. The point is that only Noh can be improved.

In addition, in addition to turning on / off the voltage changeover switch 5, the half-wave rectifying diode 6, and the power source for using both domestic and overseas low voltage (100 to 120 V) and overseas high voltage (200 to 240 V). , The power switch 7 that switches the ON state to HI / LOW further, the thermostat 8 that automatically opens and closes the power supply to prevent overheating and secures safety, and the power supply D, etc. Since it is the same as that described in FIG. 7, the description thereof is omitted.

[0018]

[Effect of device]

 According to the above invention, the blower motor is provided with the turbo means constituted by connecting the resistor connected in series to the blower motor and the short-circuiting switch capable of short-circuiting the resistor. There is an effect that a function can be added and the number of rotations can be diversified.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an example of implementation of the present invention.

FIG. 2 is a circuit diagram of a conventional example.

FIG. 3 is an explanatory diagram of contacts of a conventional power source changeover switch.

FIG. 4 is an explanatory diagram of a contact open / close state when the voltage changeover switch of the conventional example is changed over to low voltage in Japan and overseas.

FIG. 5 is a circuit diagram of a heater when the voltage changeover switch of the conventional example is changed over to low voltage in Japan and overseas.

FIG. 6 is an explanatory diagram of the open / closed state of the contacts when the voltage changeover switch of the conventional example is changed over to high voltage for overseas.

FIG. 7 is a circuit explanatory diagram of a heater when the voltage changeover switch of the conventional example is changed over to high voltage for overseas.

[Explanation of symbols]

1 Heater H ₁ , 2 Heater H ₂ , 3 Heater H ₃ , 4 Blower Motor, 5 Voltage Change Switch, 9 Resistor, 10 Short Circuit Switch, 11
Turbo means.

Claims (1)

[Scope of utility model registration request] 1. A hair dryer for domestic and overseas use, comprising a blower motor and a plurality of heaters, which has a voltage switching means capable of responding to power sources having different voltages, and is connected to the blower motor in series. A hair dryer, comprising: a resistor connected to a resistor; and a turbo unit configured by connecting both ends of the resistor with a short-circuiting switch capable of short-circuiting.