JPS6248483B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a phase-controlled hair dryer.

When controlling the phase of a hair dryer motor or heater, it is necessary to provide noise prevention means.
However, the toroidal core for the noise filter used for this purpose generates heat and needs to be cooled.

Therefore, an object of the present invention is to provide a phase-controlled hair dryer that can effectively cool a toroidal core with a simple configuration.

A first embodiment of the invention is shown in FIGS. 1 to 6. In other words, 1 is a miniaturized zigzag heater, 2 is a power switch, 3 is a voltage dividing resistor for the motor,
4 is a phase control circuit that controls the power of the heater 1; 5;
is a motor that drives the fan 6, 7 is a bell mouth for wind guide, 8 is a rotary connector that connects the power cord 9 and the lead wire 10, 11 is the dryer body, 1
2 is a toroidal core for absorbing noise generated during phase control; 13 is a support leg that supports the toroidal core 12 and also radiates heat; 14 is a thermistor for detecting wind temperature and automatically adjusting the temperature; 15 is a discharge 16 is the suction port, 17 is the attachment/detachment button for the attachment attached to the discharge port 15, and 18 is the heater 1.
It is a board that supports etc.

As shown in FIGS. 2 to 6, the holding means for the toroidal core 12 includes a disk-shaped holding plate 19, an insulating plate 20 made of alumite or the like, a presser body 21, and bolts 2.
2 and a nut 23, and the holding plate 19 is pressed in the unfolded state as shown in FIG.
A pair of push pieces 26 are bent along the broken lines 25 and attached to the peripheral edge of the holding plate 19, and the supporting legs 13 that also serve as fins are attached to the peripheral edge of the holding plate 19.
A bolt insertion hole 27 is formed in the center of the retaining plate 19.
is formed. Toroidal core 12 is coil 2
8 is wound and an insulating plate 20 is applied to one side thereof, and this insulating plate 20 is applied to a retaining plate 19, and the outer circumferential surface of the toroidal core 12 is held between the pressing pieces 26. The presser body 21 has a cylindrical shape with a flange, and is inserted into the hollow part of the toroidal core 12 and presses the outer surface of the core 12 with the flange 29. In this state, attach the bolt 2 to the presser foot 21.
2 and tighten with nut 23. Then, the tips of the support legs 13 of the holding plate 19 are fitted into the mounting recesses 30 formed on the inner surface of the dryer main body 11 by fitting the half-cylindrical main body housings together,
Placed in a wind tunnel. That posture is toroidal core 1
2 and the plate width direction of the support legs 13 coincide with the longitudinal direction of the wind tunnel and therefore with the wind direction.

This phase control type hair dryer has switch 2
When turned on, the motor 5 operates and the fan 6 rotates, which sucks air from the suction port 16.
The air is blown out from the discharge port 15 through the fan 6, motor 5, support leg 13, toroidal core 12, heater 1 and thermistor 14. On the other hand, the thermistor 14 detects the temperature of the wind, and the phase control circuit 4 controls the power supplied to the heater 1 so that the wind temperature is constant. Noise generated due to this phase control is absorbed by the coil 28 of the toroidal core 12. In addition, since the wind flows parallel to the width direction of the supporting legs 13, there is no obstruction to the wind, and the heat generated in the toroidal core 12 is transferred to the retaining plate 19 and the pushing piece 2.
The heat is transferred to the support legs 13, radiated through these, and cooled.

With this configuration, the toroidal core 12
Since the supporting legs 13 also serve as heat dissipation, the structure is simplified. Also, since the supporting legs 13 do not get in the way of the wind, the shape and structure do not increase in size, and the heat conduction between the toroidal core 12 and the supporting legs 13 is improved. Since the area is formed wider by the holding plate 19, the cooling effect is high. Furthermore, the holding plate 19 can be manufactured very simply by press working and can be manufactured at low cost.

A second embodiment of the invention is shown in FIG. This improves the cooling effect by forming a large number of small holes 31 in the holding plate 19a and allowing air to pass through the small holes 31.

A third embodiment of the invention is shown in FIG. This is provided at a right angle position to the push piece 26 so that the radial direction of the holding plate 19b coincides with the wind direction, and the support leg 13a also aligns the width direction of the plate with the wind direction Q. This has less wind resistance than the example above,
Moreover, since the contact rate of the air flowing on the surface of the toroidal core 12 is high, the cooling effect is high.

As described above, in the phase control type hair dryer of the present invention, the support legs of the holding member that holds the toroidal core for noise prevention also serve as heat dissipation fins, so the simple structure allows the hair dryer to operate without blocking the air passage. This has the effect of effectively cooling the toroidal core.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the first embodiment of the present invention, FIG. 2 is an exploded perspective view of the toroidal core holding part, and FIG.
The figure is a plan view of the holding plate in its unfolded state, Figure 4 is an enlarged sectional view taken along the lines of Figure 1, Figure 5 is a partially exploded perspective view thereof, Figure 6 is a sectional view of the toroidal core holding part, and Figure 7 is a sectional view of the toroidal core holding part. FIG. 8 is a perspective view of the holding plate of the second embodiment, and FIG. 8 is a perspective view of the holding plate of the third embodiment. 11... Dryer body, 12... Toroidal core,
13...Support leg that also serves as heat dissipation fin, 19, 19a, 1
9b... Holding plate (holding member), 21... Presser body, 31
...Small hole.

Claims (1)

[Scope of Claims] 1. A dryer main body having a wind tunnel, a toroidal core for noise prevention disposed in the wind tunnel, a holding member for holding the toroidal core, and a tip portion provided on the holding member having a distal end thereof A phase-controlled hair dryer equipped with support legs that also serve as heat dissipation fins held in the dryer body. 2. The phase-controlled hair dryer according to claim 1, wherein the holding member includes a holding plate that comes into contact with one side of the toroidal core, and a presser that presses the toroidal core against the holding plate through a center hole of the toroidal core. . 3. The phase control type hair dryer according to claim 2, wherein the holding plate is formed from a single plate by press working. 4. The phase-controlled hair dryer according to claim 1, 2 or 3, wherein the supporting legs have a plate width direction parallel to the wind direction. 5. The phase-controlled hair dryer according to claim 1, 2, 3, or 4, wherein the holding plate has a large number of cooling holes.