JPH08228820A - Hair drier - Google Patents

Abstract

PURPOSE: To prevent foreign matters from entering into the opening of a slide switch. CONSTITUTION: A switch holder 31 operates a switch knob 25 to control an electric fan and a heat generator 31 electrically. An opening 27 which is formed in the sliding area of the switch knob 25 is covered with a wall 33 of the switch holder 31. Even if the switch knob 25 is placed anywhere, the wall 33 of the switch holder 31 covers the opening 27. Therefore, foreign matters such as dusts do not enter into the opening 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair dryer which operates a switch knob of a slide switch by operating a switch knob to electrically control an electric fan and a heating element constituting a blower to switch a plurality of modes. .

[0002]

2. Description of the Related Art Generally, a hair dryer of this type is provided with an air blower having an electric motor and a fan in a housing having a blowout opening on one side, and a heating element formed in a spiral shape. The air sent out is heated by a heating element so that warm air is blown out from the air outlet. In addition, a slide switch equipped with a slide type switch knob is provided inside the handle, and by operating the switch knob of this slide switch by operating the switch knob, the electric motor and the heating element constituting the blower device are electrically operated. Control is performed to switch to a plurality of modes.

[0003]

In the above-mentioned hair dryer of the prior art, since the switch knob slides in a sliding manner structurally, foreign matter such as dust and dust enters through the opening formed in this sliding portion. Then, contact failure in the slide switch and sliding of the switch knob may occur,
There was a problem that the power did not turn on or the mode did not switch.

In view of the above problems, the present invention provides a hair dryer that prevents foreign matter from entering through the opening of a slide switch and eliminates contact failure and sliding of a switch knob. To that end.

[0005]

A hair dryer according to the present invention operates a switch knob of a slide switch by operating a switch knob to electrically control an electric fan and a heating element housed in a housing so that a plurality of hair dryers can be operated. In the hair dryer for switching to the mode, the switch knob is provided with a wall portion that closes an opening formed in a sliding portion of the switch knob.

[0006]

With the above structure, when the switch knob of the slide switch is operated by sliding the switch knob, the electric fan and the heating element are electrically controlled, and the mode is switched to a plurality of modes corresponding to the electric control. In this case, regardless of the position of the switch knob, the wall of the switch knob covers the opening of the slide switch, so that foreign matter such as dust or dust does not enter the opening.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. First, in FIG. 1 showing an overall cross-sectional view of a hair dryer, 1 is a plastic housing formed in a substantially cylindrical shape, 2 is an air outlet cover having an air outlet 3 provided on the front surface of one side of the housing,
An air intake port 4 is formed on the rear surface on the side opposite to the air outlet 3. Reference numeral 5 denotes an air blower housed in a substantially central portion of the housing 1, which is composed of an electric motor 6 and a fan 7 that is fixed to a rotary shaft of the electric motor 6 so as to face the intake port 4. Between the air outlet 3 and the blower 5, a heating element 8 is provided in which a heating wire wound like a spring is spirally arranged along the inner wall surface of the housing 1 at a predetermined interval. As shown in FIG. 3, the heating element 8 is composed of a first heater 9 and a second heater 10 having different spiral diameters. Further, as a means for supporting the first and second heaters 9 and 10 inside the housing 1, a heater substrate 12 having a plurality of opening windows 11 is provided so as to intersect at approximately 90 ° when viewed from the outlet 3. A U-shaped first notch 13 is formed at the outer end of the heater substrate 12, and a second notch deeper toward the center of the housing 1 than the first notch 13 is formed. The part 14 is formed. Then, by locking the first heater 9 in the first cutout portion 13 and locking the second heater 10 in the second cutout portion 14, the distance from the center of the housing 1 to the first heater 9 is increased. The distance is made larger than the distance from the center of the housing 1 to the second heater 10. Reference numeral 15 is a connection terminal commonly provided at one end of the first and second heaters 9 and 10.

Referring to FIGS. 1 and 2, the structure of other portions will be described. Reference numeral 21 is a plastic handle portion rotatably provided at the base end portion of the housing 1. A slide switch 23 mounted and fixed by a plurality of bosses 22 is provided at the center of the inside of the handle portion 21. In the slide switch 23, a switch knob 25 is slidably provided at a position corresponding to a window hole 24 of the handle portion 21, and conductive terminals 26 for electrically connecting to the outside are provided on the upper and lower portions, respectively. It is provided. An opening 27 is formed in the sliding portion of the switch knob 25 on the front surface of the slide switch 23, and a switching contact for a terminal 26 (not shown) is provided inside the opening 27. The slide switch 23 electrically controls the electric fan 6 and the heating element 8 to switch to a plurality of modes. Specifically, the power is turned on / off and the electric motor 6 and the heating element 8 are consumed. The power is switched.

On the other hand, 31 is fitted in the switch knob 25 of the slide switch 23, and together with this switch knob 25, the window hole 24
It is a switch knob provided slidably along. The switch knob 31 includes a flat plate-shaped switch operating surface 32 having a plurality of protrusions on the upper surface and an opening 27 of the slide switch 23.
A wall portion 33 that closes the upper surface of the switch operation surface 32, and a U-shaped groove portion 34 that is formed from the lower surface of the switch operation surface 32 to approximately the center of the wall portion 33 and that fits the switch knob 25. The switch operation surface 32 and the wall portion 33 of the switch knob 31 are the outer wall of the handle portion 21.
It is formed so as to sandwich 28, and plays a role of a guide when slidingly operating the switch knob 31. In this case, the groove portion 34 of the switch knob 31 comes into contact with the window hole 24 of the handle portion 21,
The sliding of the switch knob 31 is regulated.

In the hair dryer having the above construction, when the switch knob 25 of the slide switch 23 is slid by the switch knob 31, the power is turned on / off and the power consumption of the electric motor 6 and the heating element 8 is switched. That is, when the switch knob 31 is switched to the “H” mode, the first heating element 8
While the heater 9 and the second heater 10 are both energized, the electric fan 6 rotates at high speed, and hot air is blown out from the outlet 3 in a strong wind state. On the other hand, when the switch knob 31 is switched to the “L” mode, the first heater 9 of the heating element 8 is
Alternatively, only the second heater 10 is energized, the electric fan 6 rotates at a low speed, and the warm air is blown out from the outlet 3 in a weak wind state. In this case, regardless of the position of the switch knob 25, the wall portion 33 of the switch knob 31 has the slide switch 23.
Since the opening 27 is covered, foreign matter such as dust and dust does not enter the opening 27. Further, since the first and second heaters 9 and 10 of the heating element 8 have mutually different spiral diameters, the air taken in from the blower device 5 is directed to both the first and second heaters 9 and 10. It is supplied almost evenly without any interruption. Therefore, it is possible to prevent red heat of the heating element 8 due to interruption of the flow of air, as compared with the conventional arrangement in which the heating element 8 is arranged in a cylindrical shape or a tapered shape.

Thus, in the above embodiment, the switch knob
Open the opening 27 formed in the sliding part of 25 with the switch knob 31
Since it is configured to cover with the wall 33 of the switch knob
No matter where the 25 is, foreign matter such as dust and dirt will not enter the opening 27. Therefore, the contact failure of the slide switch 23, the sliding failure of the switch knob 25, and the like do not occur, and it is possible to eliminate problems such as power not being turned on and modes not being switched.

By the way, in the conventional hair dryer, the heating element 8 is arranged along the inner wall surface of the casing 1 in a cylindrical shape or in a tapered shape. There was a problem in use such that the red-heated heater part could be seen from the outlet 3 by blocking the flow of No. In this embodiment, in order to solve this point, the first and second heaters 9 and 10 having different outer diameters are provided.
Are alternately arranged along the inner wall surface of the casing 1 in a spiral shape, so that the air taken in from the blower device 5 is shielded from both the first and second heaters 9 and 10 on the way. It is possible to prevent red heat of the heating element 8 due to the supply of the gas substantially uniformly without interruption and the interruption of the air flow.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, in the hair dryer shown in the embodiment, the casing 1 and the handle portion 21 are separately provided, but the present invention can be applied to a cylindrical hair dryer in which the casing and the handle portion are integrated. it can. Also, the wall
The switch 33 may be provided separately from the switch knob 31.

[0014]

According to the hair dryer of the present invention, the switch knob of the slide switch is operated by holding the switch to electrically control the electric fan and the heating element housed in the housing to switch the hair dryer to a plurality of modes. In the dryer, since a wall portion that closes the opening formed in the sliding portion of the switch knob is provided in the switch knob, foreign matter can be prevented from entering through the opening of the slide switch, and contact conduction failure can occur. Also, it is possible to eliminate the sliding failure of the switch knob.

[Brief description of drawings]

FIG. 1 is an overall sectional view of a hair dryer showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1 above.

FIG. 3 is a perspective view of the vicinity of the heating element of the above.

[Explanation of symbols]

 1 Housing 6 Electric fan 8 Heating element 23 Slide switch 25 Switch knob 27 Opening 31 Switch knob 33 Wall

Claims (1)

[Claims] 1. A hair dryer for electrically controlling an electric fan and a heating element housed in a housing to switch between a plurality of modes by operating a switch knob of a slide switch by operating a switch knob. A hair dryer, wherein a wall portion that closes an opening formed in a sliding portion is provided on the switch knob.