JPH064041B2 - Hair dryer - Google Patents

Description

Description: TECHNICAL FIELD The present invention provides a hair dryer, in particular, a wiring board formed by attaching a conductive plate to a substrate for connection between electric parts such as a heater block and a switch. It is related to a hair dryer.

[Background Art] When connecting electric parts such as a heater and a switch, the electric parts are not made into lead wires but a conductive board 1 is embedded in a board 2 or a wiring board 3 fixed to the board is used to form electric parts into blocks. There is something. An example is shown in FIG. This is for a flat type hair dryer, and two wiring boards 3 and 3 connected to each other by a conductive plate 1 embedded in a substrate 2 are provided, and one wiring board 3 is provided with a heater block 4
The main switch 5 is attached to the other wiring board 3, and the other wiring board 3 is provided with a changeover switch 6 for changing the amount of air flow and the amount of heat. Due to the operability and the arrangement of components, one wiring board 3 forms an angle of approximately 90 degrees with the other wiring board 3.

When such blocking is introduced into a pistol-shaped hair dryer in which the switch handle is provided in the grip portion, there are the following problems. That is, in the hair dryer of this embodiment, the heater block 4 is usually installed in the main body part, and the switches are installed in the grip part. In this case, however, two wiring boards are used as in the conventional example. It is necessary to fold the exposed portions of the conductive plate 1 between the two wiring boards 3 and 3 so that the wirings 3 and 3 form a substantially right angle. However, the operating force F applied to the switch is applied to such a bent portion as a concentrated stress, and if this is repeated, a breakage of the conductive plate 1 will occur.

However, regarding this point, the conductive plate 1 is not bent at a substantially right angle but is in a curved state,
Can be dealt with. The one shown in FIGS. 10 and 11 is for a cylindrical hair dryer, but like the one shown here, a conductive plate 1 that connects two wiring boards 3 and 3 to each other is used. The bending can prevent concentration of stress applied to the switch.

However, in such a case, when the blocking is applied to the pistol-shaped hair dryer, a problem still remains. In other words, one wiring board is housed in the cylindrical main body where the heater block, blower fan, etc. are installed,
In the grip where the switches are installed, the other wiring board connected to the above wiring board by a conductive plate will be stored, but at this time, a partition wall that prevents air leakage from the main body to the grip is installed. , The conductive plate connecting both wiring boards will cross. Now, if there is only one conductive plate, it is easy to make the conductive plate cross the partition wall so as to prevent air leakage, but in reality, multiple conductive plates are used. However, since it is necessary to leave a space between each conductive plate for insulation, it is extremely difficult to make each conductive plate traverse the partition wall while preventing air leakage. is there.

[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide a wiring board and a grip portion housed in the main body in a body and a grip portion. It is an object of the present invention to provide a hair dryer capable of easily preventing wind leakage from the main body portion to the grip portion as well as causing no disconnection or the like due to stress concentration in a portion connected to a wiring board to be housed.

DISCLOSURE OF THE INVENTION The present invention, however, includes a wiring board formed by attaching a conductive plate to a substrate, a heater block is attached to the first wiring board, and the conductive plate is attached to the first wiring board. In the hair dryer in which the switch is attached to the second wiring board connected by the
A third wiring board between the first wiring board and the third wiring board, and a third wiring board interposed between the first wiring board and the third wiring board. The conductive plates between the wiring board and the second wiring board are bent at obtuse angles, and the third wiring board is arranged in the opening of the partition wall that separates the internal space of the main body part and the internal space of the grip part. The stress is distributed by making two bendable portions in the conductive plate to disperse the stress, and by making each bending angle an obtuse angle, the applied stress itself is also small, and the first The third wiring board provided between the wiring board and the second wiring board is used to prevent air leakage at the partition wall.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment.
And a grip portion 20 that is provided so as to project downward from the lower surface of the rear portion of the main body portion 10 and that is rotatable and foldable. The heater block 4 is provided in the front portion of the main body portion 1 and Is provided with a motor 7 and a blower fan 8 driven by the motor 7. Further, in the grip portion 20, a main switch 5 which is turned on and off by a switch handle 50 provided on the front surface of the grip portion 20,
Switch handle 60 provided on the back surface of the grip portion 20
The change-over switch 6 that can be changed over is stored. The switches 5 and 6 are integrated.

And the heater block 4 and both switches 5 and 6 are
Although it is arranged in a state where it is attached to the wiring board 3,
A total of three wiring boards 3 are provided. Wiring board 3 to which heater block 4 is attached and is housed in main body 10
And both switches 5 and 6 are attached to the grip portion 20.
Wiring board 3 housed inside, and both wiring boards 3,
There are three wiring boards 3 between the three. These wiring boards 3 are
A conductive plate 1 formed of a metal plate is embedded in a substrate 2 by molding, and the three wiring boards 3 are integrally formed as shown in FIGS. The wiring boards 3 are connected to each other by 1. The assembly to the main body portion 10 and the grip portion 20 is performed after bending the exposed conductive plate 1 between the wiring boards 3.
In FIG. 2, 31 is a heater terminal fitting portion, 32 is a voltage dividing resistance terminal fitting portion, 45 is a diode, 46 is a rectifier, and 35 is a switch terminal fitting portion.

Now, the wiring board 3 housed in the main body portion 10 and the wiring board 3 housed in the grip portion 20 have different orientations, and both are in a substantially right-angled positional relationship. Is done by bending the conductive plate 1 which connects the three wiring boards 3 in sequence as described above. Two conductive plates 1 connecting the three conductive plates 3
By bending each at an obtuse angle,
The three are arranged so as to form a substantially right angle.

The wiring board 3 in the center has a main body portion 10 and a grip portion 2.
It is fitted into an opening 16 formed in a partition wall 15 that partitions each internal space of 0 and closes the opening 16. Further, the wiring board 3 is inclined with respect to the axis of the main body 10 at an angle of 45 degrees or less, so that the wiring board 3 is less likely to become a ventilation resistance. The wiring boards 3 are positioned by the guide ribs 17, the partition walls 15 and the ribs 18.

Since the wiring board 3 on which the switches 5 and 6 are mounted is different from the wiring board 3 on which the heater block 4 is mounted, it is possible that the operating force applied to the switches 5 and 6 is not transmitted to the heater block 4. In addition, the stress due to the operating force does not concentrate on the conductive plate 1 connecting between the wiring boards 3, and further, the portion of the partition wall 15 that separates the inside of the main body portion 10 from the inside of the grip portion 20. The wiring board 3 attached to the above prevents the air leakage into the grip portion 20.

FIG. 7 shows the substrates 40 and 41 in the heater block 4.
And the heater coils 42 and 43 are shown. The pair of substrates 40 and 41 are combined in a cross to form one substrate 40
3, the heater terminals 47, 47 and the voltage dividing resistance terminal 48 are fixed to one side edge thereof, and the thermoswitch 65 is fixed to one end thereof, as shown in FIG. Has been designed to make it easier. The terminals of both the heater coils 42 and 43 utilize the fittings for fixing the heater terminal 47 to the substrate 40 and fixing the thermo switch 65 to the heater terminal 47 and the thermo switch 6.
5 is connected to. The other end of the thermoswitch 65 is connected to the other heater terminal 47. In the figure, reference numeral 61 is a Siegel wire as a voltage dividing resistance.

By the way, the wind discharged from this hair dryer is
As is clear from the wind speed distribution chart shown in the figure, the wind speed is fast on the outer peripheral side and slow at the central part, so that the air temperature distribution is uniform or the temperature rise and red heat of the heater coils 42 and 43 are uniform. Heater coil 42,4
It is preferable that the amount of heat given from 3 is large on the outer peripheral side and small on the central part. For this reason, a pair of heater coils 42 and 43, which are electrically connected in parallel and wound around the substrates 40 and 41, are provided on the inner side of the heater coils 42 as shown in FIG. Is to be located. By adjusting the cross-sectional area or power consumption of both heater coils 42, 43, the above-mentioned demand can be easily met.

[Effects of the Invention] As described above, in the present invention, stress is distributed by setting two bendable portions in the conductive plate and making each bending angle an obtuse angle so that the applied stress itself is small, and It prevents the disconnection due to the breakage of the board, and the presence of the third wiring board provided between the first wiring board and the second wiring board allows the wind to the grip portion in the partition wall portion. Leakage is prevented.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a developed plan view of the same wiring board, FIG. 3 is a developed front view of the same wiring board, and FIGS. Line A-A and B- in Figure 1
Sectional view taken along line B, FIG. 6 is a wind velocity distribution diagram of the same as above, FIG. 7 is a schematic front view of the heater block, FIG. 8 is a circuit diagram of the same heater block, and FIG. 9 is a conventional wiring board. Front view, FIG. 10 is a front view of another conventional wiring board, FIG. 11 is a right side view of the same, where 1 is a conductive plate,
Reference numeral 2 is a substrate, 3 is a wiring board, 4 is a heater block, 5 is a main switch, and 6 is a changeover switch.

Claims (2)

[Claims] 1. A second wiring board comprising a wiring board formed by attaching a conductive board to a substrate, wherein a heater block is mounted on the first wiring board, and the second wiring board is connected to the first wiring board by the conductive board. In a hair dryer in which a switch is attached to the wiring board, a third wiring board is interposed between a first wiring board stored in the main body section and a second wiring board stored in the grip section. , The conductive plate between the first wiring board and the third wiring board and the conductive plate between the third wiring board and the second wiring board are bent at obtuse angles, and the space inside the main body and the grip A hair dryer, characterized in that the third wiring board is arranged in an opening of a partition wall for partitioning the internal space. 2. The heater block is a cross-shaped board having a heater coil attached thereto, and the board has terminals for connection with a wiring board along a side edge on the first wiring board side. The hair dryer according to claim 1.