JPS6020322Y2 - hair dryer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved structure of a hair dryer, and particularly improves assembly workability.

Generally, the main body case of a hair dryer is made of a molded synthetic resin material, and is completed by fitting the left and right split cases together and arranging each electrical component in the internal space.

Each electrical component is sequentially electrically connected by lead wires starting from the power cord.

The lead wires in this configuration are wired along the inner wall of the main body case, but sometimes the lead wires become slack, and during assembly, the lead wires are sandwiched between the abutting surfaces of the left and right split cases. If the wire breaks or if there is slack in the main body case, it may come into contact with the blower fan or heat generating unit, causing an unexpected accident.

The present invention has been developed in view of these points, and an embodiment of the present invention will be described below with reference to the drawings. 1 is a hair dryer body in which a case body 4 formed by abutting a left case 2 and a right case 3 is hollow. The case body 4 includes a heat generating unit 6, which is an electrical component 5, an electric blower unit 7 for forcing air to the heat generating unit, and a switch 8 for controlling the energization of these units, and energizes both the units 6 and 7. Outside air is sucked in through a suction port 9 formed on the rear side surface of the case body 4, and hot air is discharged through a discharge port 10 formed on the front end surface.

The heat generating unit 6 has a nichrome wire 12 wound around a cross-shaped winding frame 11, and a rectangular heat shielding tube 1 around the outer periphery of the winding frame 11.
3, and the side wall 14 of the heat shield cylinder 13
A lead piece of 15°15.15 mm is formed to protrude from the appropriate position.

Further, the electric blower unit 7 has a fan 18 pivotally supported on a rotating shaft 17 of an electric motor 16, and a side end surface 1 of the electric motor 16.
Lead pieces 15', 15' are formed protruding from 9.

The switch 8, which controls the energization of both units 6.7, also has lead pieces 15", 15", 15 led out from the outer wall 21 of the switch box 20 from internal contacts (not shown).
It is provided with an operating knob 22 which is formed protrudingly to switch the internal contacts.

Reference numeral 23 denotes a printed circuit board for fixing the heating unit 6, electric blower unit 7, and switch 8, which are the electrical components 5, and the printed circuit board has an external shape that fits within the case body 4, as shown in FIG. For example, it is a material that can be superimposed on the inner side wall of the left case 2 and forms a wind tunnel with the inner side wall of the right case 3 facing oppositely.

Then, a wiring pattern 25 is formed on the back surface 24, and each lead piece 15 of the electrical component 5 is placed at the end of the wiring pattern.
．． 15', a connector part 26 into which 15' are inserted and fixed;
26..., the electrical components 5 are fixedly connected to the surface 27 side of the printed circuit board 23, and the power cord 2 is connected to the connector portions 25', 25' formed at the ends.
8 can be connected.

A slit 29 is provided in a portion to which the electric blower unit 7 is fixedly connected, so that outside air can be introduced through the suction port 9 provided in the left case 2.

Therefore, when assembling, the electrical components 5 of the heat generating unit 6, the electric blower unit 7, and the switch 8 are fixedly connected to the printed circuit board 23 in advance, and the power cord 28 is connected. It is completed by covering the

In the above embodiment, all the electrical components 5 are mounted on the printed circuit board 23, but for example, only the heat generating unit 6 and the switch 8 may be fixedly connected.

As mentioned above, the hair dryer of the present invention has a heat generating unit inside the hollow case main body, which has left and right split cases brought together, an electric blower unit that blows air to the heat generating unit, and various electrical components such as switches that control the power supply to these units. In the hair dryer, a printed circuit board for connecting a power cord is overlapped with an inner side wall of the case body to form a wind tunnel with the inner side wall of the case body facing each other, and the printed circuit board is connected to the inner side wall of the case body. Since each of the above-mentioned electrical components is fixedly connected in a conductive manner, there is no need to wire more lead wires inside the case body, and there is no need for lead wires to be caught during assembly as in the conventional case. This eliminates wire breakage accidents, improves assembly workability, makes it suitable for mass production, and eliminates wiring errors, resulting in good quality.

By overlapping the printed circuit board on the inner side wall of the case body and forming a wind tunnel with the opposing inner side wall of the case body, the printed circuit board can be forcibly cooled and the space inside the case body can be reduced. It can be used effectively and does not require separate parts to form a wind tunnel.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of the hair dryer of the present invention, Fig. 2 is a central sectional view of the hair dryer of the present invention, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 is a line B-- in Fig. 2. B sectional view,
A in FIG. 5 is a side view of the printed circuit board used in the present invention as seen from the front side, and the opening is a back view. 4...Case body, 6...Heating unit, 7...Electric blower unit, 8...
Switch, 23... Printed circuit board.

Claims (1)

[Scope of utility model registration request] A hair dryer in which a heat generating unit, an electric blower unit for blowing air to the heat generating unit, and electrical components such as a switch for controlling energization of these units are arranged in a hollow case body formed by abutting left and right divided cases, A printed circuit board to which a power cord is connected to the inner side wall of the case body is overlapped to form a wind tunnel with the inner side wall of the case body facing each other, and each of the electrical components is fixedly connected to the printed circuit board in a conductive relationship. hair dryer.