JPH0523124Y2 - - Google Patents

Description

[Detailed explanation of the idea] 〔Technical field〕 This invention relates to a hair dryer.

[Background technology]

For example, a hair dryer that has various hair styling attachments removably attached to the main body can be used by separating the attachments and the main body after use.
People are now using it to store it or carry it with them when they travel. When carrying the device in this way, there is a risk that small items such as hairpins stored at the same time may enter the heater through the ventilation outlet, causing a short circuit in the electric circuit or damaging the heater. was. For this reason, wire mesh has traditionally been installed at the air outlet (discharge port) that discharges hot or cold air.
This was disadvantageous because the air blowing resistance increased rapidly. This is because, in order to attach a wire mesh, it is generally necessary to bend the tip of the cylindrical cap inward to form a ring shape to form a bending allowance, and then weld the wire mesh to this bending allowance. In this way,
This is because the presence of the bending allowance portion causes a large air blowing resistance. Of course, such a cap should be simple and inexpensive to manufacture. Therefore, a low-cost cap with low air blowing resistance is desired.

[Purpose of invention]

In view of the above-mentioned problems, this invention has been developed to provide a hair dryer that has reduced air blow resistance and is equipped with a low-cost mouthpiece at the air outlet to prevent foreign objects such as hair pins from getting mixed in, thereby improving safety. is intended to provide.

[Disclosure of invention]

In order to achieve the above-mentioned object, this invention provides a hair dryer that is equipped with a cap having ventilation holes at the air outlet, the cap having a cylindrical shape with a bottom, and the bottom of the cap having a number of punched holes to serve as the ventilation holes. It is formed in a lattice shape with openings, and the first punching openings are rectangular and have the same area.
A punching opening is arranged over the entire bottom of the mouthpiece, and a second punching opening having a deformed shape whose outline is constituted by the outer edge and a grid is arranged on the outer edge of the bottom of the mouthpiece. For those whose area is less than a predetermined area, the lattice forming the inner contour is shifted inward to increase the area of the opening beyond the predetermined area. Abstract: A hair dryer characterized in that the inner row of the two punched openings is provided with a third punched opening having a rectangular shape smaller than the area of the first punched opening but larger than a predetermined area. It is said that

This invention will be explained in detail below with reference to drawings showing embodiments thereof.

Fig. 1 shows an example of the hair dryer according to this invention, as a cross-section of the entire hair dryer, and Fig. 2 shows the state in which it is disassembled except for a part and viewed diagonally from above. There is. As shown in these figures, the main body of the hair dryer includes a body 1. This body 1 consists of two parts, one of which is a first case body 2.
The other is the second case body 3. These first and second case bodies 2 and 3 are provided with a mounting step 5 having an attachment/detachment button 4 at their tips, and an outside air intake port 6 and a connector mounting portion 7 at their rear ends. Both case bodies 2 and 3 are each semi-cylindrical in shape, and are combined to form one cylindrical body. A base tube part 10 of a base 9 having an accent ring 8 at its base is attached to the mounting step part 5. The cap 9 has a cylindrical shape with a bottom. The bottom of the base is stamped,
A lattice 11 is formed so as to be orthogonal in the vertical and horizontal directions. Therefore, as shown in FIG. 3 and FIG.
E, F, G1, I, J, and a third punching opening C2 having a rectangular shape with a smaller area than the first punching opening.
G2 will be formed as a ventilation hole. 1st
The punched opening 12 has its maximum size within a range through which a hairpin does not pass. This is to minimize the blowing resistance so that hot air and cold air can be efficiently discharged. Second punching openings A, B, C1, E, F, G
1, I, and J are located in the plane between the first punching opening 12 and the outer circumferential edge 13, so that the ventilation holes are open up to the outer circumferential edge 13 of the bottom of the cap. The second punching opening C1... is
A part of the outline is the shape of the inner periphery of the outer peripheral edge 13, and the remaining part is formed by a vertical and horizontal lattice.
The third punching openings C2 and G2 have dimensions b×
Although it is possible to form the first punched opening 12 in FIG. As a result, the punching strength becomes insufficient when punching. Therefore, the third punching opening C2,G
2 is not a square hole with dimensions b×b, but a rectangular hole (punching opening with a narrow opening area) with a slightly smaller dimension a(<b)×b, and the second punching opening C1,G
By making the hole No. 1 larger, the above-mentioned lack of strength is prevented from occurring. That is, the second punching openings C1, G1 whose area is less than a predetermined area sufficient for punching.
In order to expand the area beyond a predetermined area, the lattice forming the inner contour of the second punched openings C1, G1 is arranged to be shifted inward than usual. The inner row of the second punching openings C1 and G1 arranged in a staggered manner has a predetermined area smaller than the area of the first punching opening 12, but sufficient for punching. Third punching opening C2, G having a rectangular shape
2 is placed. Note that the predetermined area sufficient for punching may be specifically set in consideration of punching processing conditions and the like. As a result of the above, the punching strength is not insufficient, and as shown in FIG. 13, there is no remaining peripheral margin 13a when all the punching openings are made into the first punching openings 12. The air blowing resistance is also sufficiently small. Note that the cross-sectional shape of the lattice 11 is
As shown in the figure, it is a horizontally long rectangle. In this case, since the width of the lattice 11 becomes wider, the lattice 11 itself becomes stronger and less likely to be damaged than when the cross-sectional shape is vertically elongated and the width of the lattice 11 is narrowed.

If a single plate is press-formed into a cylinder with a bottom and the bottom is punched out to create the cap 9, manufacturing becomes very simple. In addition, in the above example, only the third punching openings C2 and G2 had a small opening area, but the other second punching openings A,
The opening areas of the punched openings 12 adjacent to B, E, F, I, and J may also be made smaller at the same time.
Moreover, the shape may also be cylindrical other than cylindrical.

In this way, since the ventilation holes are formed over almost the entire area of the bottom of the cap, the ventilation resistance is small, and in addition, the punching opening area is narrow in the punching openings in the inner row from the row located at the outer edge of the bottom of the cap. Since there is a punching opening, the punching opening has a certain opening area even near the outer periphery of the bottom of the mouthpiece, so it can be manufactured easily using punching without lacking punching strength. The cost is also low.

Next, other parts of the hair dryer will be explained.

At the rear end of the body 1, as shown in FIG.
A connector ring 16 to which 5 is connected is attached. A conductive connecting portion 84 having a lead terminal plate 83 is connected to the connector ring 16 . The power cord 15 and the connector ring 16 are connected to each other by a connecting tube 17.
One end of a fixing ring 18 provided on the outer periphery of the rear end frame 14 is engaged with the hole in the center of the rear end frame 14, thereby attaching the rear end frame 14. A rear end cap 19 is fitted onto the outer periphery of the fixing ring 18, and an intake filter 20 is attached via this cap 19.

The internal structure of body 1 is as follows. That is, a rectifier blade 22 equipped with a motor (M) 21 at the center of the front end is provided at the rear part of the body 1.
The rectifying blade 22 is attached to the body 1 via a cylindrical fan housing 23 provided so as to protrude from its rear end. An air supply fan 24 driven by the motor 21 is provided within the fan housing 23 . Air supply fan 24
The outside air sucked in from the outside air intake port 6 through the filter 20 is sent to the straightening blade 22, straightened through the straightening blade 22, and then passed through the enclosure frame 25 provided at the front part of the body 1 to the base 9. Hot air is sent from the ventilation hole to a removable attachment (not shown). The enclosing frame 25 is attached to the body 1, and a first wiring board 26 is installed in the open bottom portion of the enclosing frame 25. The first wiring board 26 is a rectangular plate that is long from front to back, and is provided with an ascending stepped portion 27 at a slightly higher front end thereof.
This first wiring board 26 is formed by sandwiching a wiring plate 28 consisting of a large number of conductive pieces between upper and lower mounting plates (not shown), and an insulating plate 30 is attached to the upper surface of the wiring plate 28. It is being This first wiring board 26 is arranged parallel to the center of the body 1 and close to the inner circumferential wall of the second case body 3, and has an upward step portion 27 at its front end on the upper surface facing the center of the body 1. A temperature sensor 31 is installed. As shown in FIG. 6, this temperature sensor 31 is a positive characteristic thermistor (PTC) 32.
and a micro heater (μH) 33 for PTC temperature control. The temperature sensor 31 is
It is arranged on the first wiring board 26 which is arranged behind the aperture opening 34 corresponding to the inside of the mounting step part 5, and is located in the upward step part 27 at the tip of the first wiring board 26. Since the heater block 35 is placed close to the heater block 35 located at the rear, the heat source from the heater is placed close to the heater block 35 with less air blowing resistance, making it easier to receive the heat more reliably. Moreover, safety will be significantly improved. The amount of heat of the micro-heater 33 is controlled by controlling the power to the micro-heater 33 near the positive temperature coefficient thermistor 32 by applying a resistance (R ₁ ) 88, (R ₂ ) 89, (R ₃ ) 90,
The temperature of the positive temperature coefficient thermistor 32 is controlled in accordance with the change in the amount of heat by adjusting the adjustment volume (VR) 36. Therefore, the resistance value of the positive temperature coefficient thermistor 32 is determined in relation to the power value operated and adjusted by the micro-heater 33, and the trigger start phase point of the triac (T) 49 is determined in accordance with this determined resistance value. will be decided. Therefore, the heater wire (H) 4 is controlled by the resistors 88, 89, 90 and the adjusting volume 36.
This makes it possible to control the amount of heat generated. A thermoswitch (Th) 37 is arranged behind the temperature sensor 31 on the first wiring board 26 . Behind the thermo switch 37 of the first wiring board 26,
The heater block 35 is arranged at the center of the width. As shown in FIG. 7, this heater block 35 includes a pair of conductive support pieces 3 at the front and rear.
8, 38, and this piece 38 consists of a cylindrical insertion tube 39 and support legs 40 extending downward from the insertion tube 39 in a V-shape. The conductive support piece 38 is entirely made of a conductive material, and an insulating pipe 41 is inserted between the two conductive support pieces 38 via insertion tubes 39 , 39 . This insulated pipe 41 has heater wires 4 on its outer periphery.
It is equipped with 2. The heater wire 42 is formed into a ring shape using a strip-shaped material such that large wave portions and small wave portions alternate. This heater wire 42
are arranged concentrically around the outer periphery of the insulating pipe 41, and are arranged in multiple stages in the axial direction of the insulating pipe 41. The heater block 35 is inserted into the first wiring board 26 by means of heater attachment protrusions 43 protruding from each lower end of the support legs 40, and is attached so that the center of the insulating pipe 41 faces parallel to the air blowing direction. . This heater block 35 is provided so that a heater wire 42 is wound around the outer periphery of an insulating pipe 41 that is provided so as to float on support legs 40, so that the heater area can be large in terms of dimensions. In addition, it has a structure that does not easily create resistance to outside air that is rectified and sent in a slightly swirling manner, resulting in excellent ventilation efficiency. As a result, it is possible to provide a heater with an excellent heat exchange rate, and the improved heat exchange rate makes it possible to incorporate a compact heater.

Note that, as shown in FIGS. 8 and 9, the heater block 35 is provided with four wires from the wiring plate 28 buried in the first wiring board 26 in an outlet 44 formed in the first wiring board 26. The support legs 40 may be integrally protruded and supported. The support legs 40 are made to stand up against each other in a V-shape, and a mounting piece 45 protruding from the insertion tube 39 is attached to the support legs 40.
However, they are connected by grommets, spot welding, etc. The power consumption of the heater wire 42 of the heater block 35 is controlled by a trigger capacitor (C ₄ ) 47, as shown in FIG.
This is accomplished by a phase control circuit equipped with a trigger element (SBS) 48, a triax 49, and the like.

A voltage dividing resistor block 50 is arranged behind the heater block 35 on the first wiring board 26. This voltage dividing resistor block 50 is provided to reduce the voltage applied to the motor 21.
As shown in FIG. 10, a pair of left and right insulating substrates 5
1, 51, the first and second voltage dividing resistance wires (R ₇ ) 52,
(R ₈ ) 53 are wound around these insulating substrates 5
1 and 51 are arranged parallel to the direction of air blowing, as shown in FIG. Insulating substrate 51
The first wiring board 2 is connected to the first wiring board 2 by a conductive insertion leg 54 attached to the lower end thereof so as to protrude downward.
6 and is installed. A conductive connecting piece 55 is attached between the upper ends of the left and right insulating substrates 51, 51 so as to form a gate shape. As shown in FIG. 11, this connecting piece 55 includes a connecting portion 56 and a conductive support portion 57 perpendicular thereto.
The connecting portion 56 is formed into a substantially T-shape by
Attachment portions 58 are formed at both ends of the conductive support portion 57, and an insertion portion 59 protrudes from one end of the conductive support portion 57. Both the mounting parts 58 and the conductive support part 57 are bent at right angles with the connecting part 56 as a reference, and as shown in FIG. It is designed to be inserted into 26.

In this voltage dividing resistor block 50, the plate surface of the insulating substrate 51 is oriented parallel to the direction of air blowing, so there is very little risk of resistance to air blowing, and moreover, the air resistance can be kept sufficiently small. It has become possible to make the insulating substrate 51 wider, and it has become possible to provide a voltage dividing resistor block 50 that is low and compact.

Note that a through hole 60 is formed in the center of the insulating substrate 51 so that the resistance wires 52 and 53 can be effectively cooled. As shown in FIG. 11, if the connecting piece 55 and the insertion leg 54 are connected and molded by a temporary fixing part 61 so that they can be separated, many parts can be efficiently cut out. be able to. Moreover, between the insulating substrates 51, 51,
A temperature fuse 46 is installed by utilizing this space.

A control circuit component block 62 is arranged behind the voltage dividing resistor block 50 on the first wiring board 26 so as to be in front of the motor 21, as shown in FIG. The control circuit component block 62 is the first to
Third sub-wiring boards 63, 64, and 65 are provided. The first and second sub-wiring boards 63 and 64 are provided vertically in the same row behind the insulating board 51 of the voltage dividing resistor block 50.

As shown in FIG. 2, the control circuit component block 62 includes first and second sub-wiring boards 63 and 64.
are arranged to face each other left and right with their plate surfaces facing the air blowing direction, and a toroidal core (L) 68 is placed between the boards 63 and 64, and a triax 49 and capacitors (C _{1 to C 1} ) are placed outside the boards 63 and 64. _C4 ),
Since electronic components such as the rectifier (D) 74 are arranged, the hair dryer becomes a short and compact block at the front and rear, making it possible to make the hair dryer more compact. Moreover, since the toroidal core 68 is well placed between both boards 63 and 64, both boards 63 and 64
Even if the electronic components are placed outside the blades 3 and 64, the width will not be that much wider.This allows the outside air flowing from the straightening blades 22 to flow smoothly with less resistance. electronic components are cooled. Since outside air can easily flow between the substrates 63 and 64, the toroidal core 68 is also effectively cooled.

Note that the first and second sub-wiring boards 63 and 64
A conductive plate 75 is provided between the first wiring board 26 and the third sub-wiring board 65. Among these, the conductive plate 75 connecting with the first wiring board 26 is The first wiring board 26 is integrated with the wiring plate 28 of the first wiring board 26.
It is also possible to form the conductive plate 75 so as to protrude outward from the conductive plate 75 so that the conductive plate 75 can be folded back and connected. According to this, assembly becomes easy and costs can be reduced. Although one pair of the sub-wiring boards is provided on the left and right sides, the present invention is not limited to this, and two pairs may be provided. Further, although the sub-wiring board is gate-shaped when viewed from the front, it may be H-shaped.

At a position on the back side of the first wiring board 26,
Another second wiring board 76 is provided in parallel. As shown in FIG. 1, the second wiring board 76 has three temperature control control lamps (light emitting diodes D ₄ to D ₆ ) 77,
78, 79, air temperature control switch (S ₃ ) 8
0, a wind speed control switch (partial voltage resistance changeover switch S ₂ ) 81, and a volume 36 for fine adjustment of the wind temperature are arranged in series. Like the first wiring board 26, this second wiring board 76 is also made up of embedded wiring plates made up of a large number of conductive pieces. This wiring plate and the first wiring board 26
The wiring plate 28 is connected to the wiring plate 28 by a large number of conductive connecting portions 82 that are integral with both of these plates. These conductive connecting portions 82 are folded back at a folding position set close to the second wiring board 76 . Further, a cap 85 is attached to the back side of the first wiring board 26 so as to correspond to the heater block 35. A slide member 87 that is slid by an ON/OFF main switch (S ₁ ) 86 is set in the cap 85 .

The temperature control control lamps 77, 7
The lighting order of 8 and 79 corresponds to the sliding operation procedure of the air temperature control switch 80. That is, FIG. 12a shows the operating state when the wind temperature is High, FIG. 12B shows the operating state when the wind temperature is Med, and FIG.

As shown in FIG. 2, the second case body 3 has a panel setting opening 91 opened, and an operation panel 93 is elastically fitted into this setting opening 91 via a hook 92. It's getting old. This operation panel 93 is formed with an operation port 93 and a lamp port 95, and each of the above-mentioned switches 80, 81, 8
6 and control lamps 77, 78, and 79, respectively. As shown in FIG. 1, the air temperature fine adjustment volume 36 is located on the operation panel 9.
It is hidden by the fitting of 3. Temperature sensor 31
As mentioned above, is provided on the discharge side from the heater block 35, but due to variations in air temperature (caused by variations in the heater), variations in rotation speed, and variations in the mounting position of the sensor (positive temperature coefficient thermistor 32). Therefore, it is extremely difficult to set the temperature of the positive temperature coefficient thermistor 32 to a target temperature. On the other hand, in the above example, the first wiring board 2
6, the temperature sensor 31 to the fan 24 are assembled, and the second wiring board 76 is assembled with the control lamps 77, 7.
8, 79, the above controls, and volume 36
In order to confirm the characteristics in this state, the assembled product is set in the second case body 3, the first case body 2 is attached, and the filter 20, power cord 15, etc. are assembled. and resistor 88,8 by adjusting volume 36.
9, 90, the temperature sensor 31 is designed to absorb variations in the positive temperature coefficient thermistor 32 and variations in the air temperature distribution in the area where the thermistor 32 is attached.
Adjust the characteristics of. After that, the operation panel 93
The assembly is completed by assembling the parts.
By doing this, the adjustment of the sensor becomes easy and a dryer with characteristics with less variation can be provided, and the operation panel 93 is assembled last and the adjustment volume 36 is hidden. There is no longer any fear that the volume 36 will move later due to external factors such as external forces and the characteristics will change.

In Figure 6, R ₆ is a current limiting resistor (for voltage drop), D ₃ is a diode for the same lamp,
D ₁ , D ₂ , and R ₄ represent hysteresis removal diodes and resistors, and R ₅ represents a protection resistor.

[Effect of idea]

As we have seen above, this invention provides a hair dryer that is equipped with a cap having ventilation holes at the air outlet, in which the cap has a cylindrical shape with a bottom, and the bottom of the cap has a number of punched openings that serve as the ventilation holes. As the punching openings, first punching openings having a rectangular shape having the same area are arranged over the entire bottom of the mouthpiece, and an outer edge is formed on the outer edge of the bottom of the mouthpiece. and a second punched opening having a deformed shape whose outline is constituted by a grid,
For those of the second punched openings whose area is less than a predetermined area, the lattice forming the inner contour is shifted inward to widen the area of the opening to more than the predetermined area. The second one is staggered.
The inner row of the punching openings has a third rectangular shape smaller than the area of the first punching opening but larger than a predetermined area.
The structure includes a punched opening. Therefore, even if the ventilation outlet is provided with a cap, the ventilation resistance and cost will not increase significantly, and foreign objects such as hair pins will be prevented from entering, thereby preventing troubles such as short circuits.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional side view of an example of a hair dryer according to this invention, showing the whole dryer, FIG. 2 is an exploded perspective view of the hair dryer, and FIG. 3 is a front view showing the bottom of the mouthpiece. Fig. 4 is a partially enlarged front view of 1/4 of the bottom of the mouthpiece, Fig. 5 is an enlarged sectional view taken along the - line in Fig. 4, and Fig. 6 is the dryer shown in Fig. 1. The electric circuit diagram, Fig. 7 is a perspective view showing details of the heater block shown in Fig. 2, and Fig. 8 is a
A front view showing another mounting structure of the heater block, FIG. 9 is an exploded perspective view thereof, and FIG. 10 is a second
FIG. 11 is a perspective view showing the installation state of the voltage dividing resistor block shown at different angles; FIG. 11 is a front view showing the molded conductive plate in the voltage dividing resistor block;
Figures 12a, b, and c are explanatory diagrams showing the relationship between the operating procedure of the air temperature control switch and the lighting order of the control lamps, and Figure 13 is a partial front view for explaining the formation of ventilation holes at the bottom of the base. be. 9... Cap, 11... Grid, 12... First punching opening, A, B, C1, E, F, G1, I, J...
...second punching opening, C2, G2...third punching opening.

Claims (1)

[Scope of utility model registration request] In the hair dryer, the mouthpiece has a cylindrical shape with a bottom, and the base has a lattice shape having a large number of punched openings serving as the ventilation holes. As this punching opening, a first punching opening having a rectangular shape with the same area is arranged over the entire bottom of the mouthpiece, and a deformed shape whose outline is composed of the outer edge and a grid is arranged on the outer edge of the bottom of the mouthpiece. If the area of the second punched openings is less than the predetermined area, the grid forming the inner contour is shifted inward to reduce the area of the opening. is expanded to a predetermined area or more, and in the inner row of the second punching openings arranged in a staggered manner, there is a third rectangular opening having a rectangular shape smaller than the area of the first punching opening but larger than a predetermined area. A hair dryer characterized by having a punched opening.