JPH066084B2 - Hair dryer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a hair dryer.

[Background technology]

The hair dryer is provided with a voltage dividing resistance means so that the voltage applied to the motor can be changed in order to switch the air volume. This voltage dividing resistance means is generally
A resistance wire is wound around an insulating substrate that is erected on the wiring board, and is placed in front of the motor in the air blowing direction in consideration of cooling.

The conventional insulating substrate has been installed so that its plate surface is orthogonal to the blowing direction. For this reason, the plate width could not be widened so as to suppress the blast loss. Therefore, the resistance wire is often wound around the insulating substrate, and there is a problem that the insulating substrate must be made high (long). Furthermore, if a large resistance value is required,
The insulating substrate needs to be higher. In other words, since the insulating substrate is high (long), this housing is required, and the hair dryer itself cannot be made compact.

[Object of the Invention]

In view of the above problems, an object of the present invention is to provide a hair dryer capable of reducing the blowing loss and making the voltage dividing resistance means compact.

[Disclosure of Invention]

In order to achieve the above object, the present invention provides a hair dryer in which an insulating substrate having a resistance wire for dividing a voltage applied to a motor wound around a substrate mounting member is arranged so as to correspond to a front side of a motor in a blowing direction. A gist of the hair dryer is that the plate surfaces of the plurality of insulating substrates are installed so as to be parallel to the air blowing direction.

Hereinafter, the present invention will be described in detail with reference to the drawings showing an embodiment thereof.

FIG. 1 shows an example of a hair dryer according to the present invention with a cross section of the entire hair dryer.
The figure shows a state in which it is disassembled except for a part and viewed from diagonally above. As shown in these figures, the main body of the hair dryer has a body 1 on the outside thereof.
The body 1 is composed of two parts, one of which is the first case body 2 and the other of which is the second case body 3.
These first and second case bodies 2 and 3 are provided with a mounting step portion 5 having an attachment / detachment button 4 at the front end, and an outside air intake 6 and a connector mounting portion 7 at the rear end. Each of the case bodies 2 and 3 has a semi-cylindrical shape, and is joined together to form a single cylinder body. The mounting step 5
A base 9 having an accent ring 8 at the base is attached to the. The base 9 is composed of a straight cylindrical base cylinder portion 10 and a protective grid portion 11 integrally formed so as to cross the tip end thereof at right angles. The air is sent through the gaps between the lattices of the protective lattice portion 11.

A rear end frame portion 14 having an outside air intake 6 is formed at the rear end of the body 1, and a connector ring 16 to which a power cord 15 is connected is attached to the center of the rear end frame portion 14. Has been. The power cord 15 and the connector ring 16 are connected to each other by a connecting cylinder 17, and one end of a fixing ring 18 provided on the outer periphery of the connecting cylinder 17 is attached by engaging with a central hole of the rear end frame portion 14. Has been. A rear end cap 1 is provided on the outer circumference of the fixing ring 18.
9 is fitted, and an intake filter 20 is attached via this cap 19. A rectifying blade 22 having a motor (M) 21 at the center of the front end is provided at the rear of the body 1. The straightening vanes 22 are attached to the body 1 via a cylindrical fan housing 23 provided so as to project at the rear end thereof. An air supply fan 24 driven by the motor 21 is provided in the fan housing 23. The blower fan 24 sends the outside air sucked from the outside air intake 6 through the filter 20 to the flow straightening vanes 22, straightens the air through the flow straightening vanes 22, and further passes through the enclosure 25 provided in the front part of the body 1. The air is blown from the blower opening 12 of the mouthpiece 9 to a removable attachment (not shown). The enclosing frame 25 is attached to the body 1, and a first wiring board 26 is installed at an opening at the bottom of the enclosing frame 25. The first wiring board 26 is a rectangular plate that is long in the front-rear direction, and a rising step portion 27 is provided at the front end so as to be slightly higher. This first wiring board 26
Is formed by sandwiching a wiring plate 28 composed of a large number of conductive pieces between upper and lower mounting plates 29, 29, and an insulating plate 30 is attached to the upper surface thereof. The first wiring board 26 is arranged parallel to the center of the body 1 and close to the inner circumference of the second case body 3, and the upper surface on the center side of the body 1 has an upward step 27 at its front end. A temperature sensor 31 is installed. As shown in FIG. 3, the temperature sensor 31 includes a positive temperature coefficient thermistor (PTC) 32 and a PTC temperature control micro-heater (μH) 33. The temperature sensor 31 is located on the first wiring board 26, which is located behind and behind the throttle opening 34 corresponding to the inside of the mounting step 5, and at the tip of the first wiring board 26. Since it is located on a certain up-level step portion 27, it is close to the heater block 35 arranged on the rear side so that the heat source by the heater is less likely to be received by reducing the air flow resistance, and the arrangement is excellent in its responsiveness. By this, it is easy to install and the stability is remarkably improved. To control the heat quantity of the micro heater (μH) 33, the positive temperature coefficient thermistor (PTC) 32 is used for the air outlet 12 of the heater block 35
In the state of being set to the side, the electric power to the micro heater (μH) 33 close to the positive temperature coefficient thermistor 32 is adjusted by the resistors R _{1 to} R ₃ and the adjusting volume (VR) 36, and the amount of heat is The temperature of the PTC thermistor (PTC) 32 is controlled according to the change. Therefore, the resistance value of the positive temperature coefficient thermistor (PTC) 32 is determined in relation to the electric power value that is operated / adjusted by the microheater (μH) 33, and the triac (T) 4 is determined according to the determined resistance value.
The trigger start phase point of 9 is decided. Therefore, the amount of heat generated by the heater wire (H) 42 can be controlled by the resistors R _{1 to} R ₃ and the adjusting volume VR. The electric energy of the heater wire (H) 42 of the heater block 35 is controlled by a circuit equipped with a trigger capacitor (C ₄ ) 47, a trigger element (SBS) 48, etc., as shown in FIG. ) 49 phase control. A thermoswitch (Th) 37 is arranged behind the temperature sensor 31 on the first wiring board 26.

Behind the thermoswitch 37, a voltage dividing resistor block 50 is arranged in the center of the first wiring board (board mounting member) 26 so as to be in the center of the width.

As shown in FIG. 4, the voltage dividing resistor block 50 is provided to divide the voltage applied to the motor 21, and is connected in series to the pair of left and right insulating substrates 51, 51 to the coil of the motor 21. The first and second voltage dividing resistance wires (R ₇ ,
R ₈ ) 52 and 53 are wound. That is, the power supply voltage is divided by the resistance wires 52 and 53 and the coil of the motor 21. These insulating substrates 51, 51 are
As shown in FIG. 2, they are arranged so as to be parallel to the blowing direction. Therefore, the insulating substrate 51 has a relatively large width and a small height, and the first wiring is formed by the conductive insertion leg 54 attached so as to project downward from the lower end thereof. It is inserted and attached to the substrate 26. Left and right insulating substrates 51, 51
A conductive connecting piece 55 is attached between the upper ends of the so as to form a gate shape. As shown in FIG. 5, the connecting piece 55 is formed in a substantially T shape by a connecting portion (conductive plate) 56 and a conductive support portion 57 orthogonal to the connecting portion 56, and mounting portions 58 are provided at both ends of the connecting portion 56. Conductive support 57
The insertion portion 59 is formed so as to project at one end of the.
The connecting portion 56 not only mechanically couples the two insulating substrates 51, 51, but the first and second voltage dividing resistance lines 52, 53 of the respective insulating substrates 51, 51 are electrically connected via the connecting portion 56. Is also connected. Both attachment portions 58 and the conductive support portion 57 are bent at a right angle with the connecting portion 56 as a reference, so that the attachment portion 58 is insulated from the insulating substrate 51 as shown in FIG.
The insertion portion 59 is adapted to be inserted into the first wiring board 26 at the upper end of the.

The voltage dividing resistor block 50 has the plate surface of the insulating substrate 51 parallel to the air blowing direction, so that the risk of air blowing becomes extremely small. Moreover, since the ventilation resistance can be suppressed to be sufficiently small, the insulating substrate 51 can be widened, and it is possible to provide the voltage dividing resistance block 50 that can fit in a low and compact size.

A through hole 60 is formed in the center of the insulating substrate 51 so that the resistance wires 52 and 53 are effectively cooled and protected. The connecting piece 55 and the insertion leg 54
As shown in FIG. 5, many parts can be efficiently obtained by plate cutting if they are connected and molded by the temporary fixing portions 61 so that they can be separated. Further, a thermal fuse 46 is installed between the insulating substrates 51, 51 by utilizing the space. This thermal fuse 46 has 3
In any usage mode of the switching blower circuit, the abnormality is surely responded to, so that the safety is improved. That is, when an abnormal overcurrent flows through the motor 21, the voltage dividing resistors 52 and 53 generate heat strongly and the temperature fuse 46 is blown. The voltage dividing resistor is sometimes used for safety protection as described above, instead of switching the air volume.

The insulating substrates are preferably provided in a pair on the left and right, but the invention is not limited to this. The number of insulating substrates is not limited as long as they are arranged in parallel to the blowing direction so as not to hinder the blowing.
The larger the number of insulating substrates, the finer the air volume can be adjusted.

Next, other parts of the hair dryer will be described in detail.

This voltage dividing resistor block 50 and the thermoswitch 37
A heater block 35 is arranged between the two. As shown in FIG. 2, the heater block 35 includes a pair of front and rear conductive support pieces (hereinafter referred to as “support pieces”) 3
It is equipped with 8,38. The support piece 38 includes a cylindrical insertion tube 39 and a support leg 40 extending downward from the insertion tube 39 so as to form a V shape. The support piece 38 is entirely made of a conductive material, and the insertion tubes 39, 39 are provided between the support pieces 38.
The insulating pipe 41 is passed through the via so as to be inserted. The insulating pipe 41 is provided with a heater wire (H) 42 on its outer circumference. The heater wire 42 is formed of a strip-shaped material in a ring shape such that large wave portions and small wave portions alternate. The heater wires 42 are arranged concentrically on the outer circumference of the insulating pipe 41, and are arranged in a plurality of stages in the axial direction of the insulating pipe 41. The heater block 35 has a first heater mounting protrusion (not shown) protruding from each lower end of the support leg 40.
It is inserted into the wiring board 26, and is attached so that the center of the insulating pipe 41 is parallel to the air blowing direction.
Since the heater block 35 is provided so that the heater wire 42 is wound around the outer circumference of the insulating pipe 41 provided so as to float by the support legs 40, a large heater area can be taken in terms of dimensions. At the same time, since the structure is such that resistance to the outside air that is rectified and slightly swirled and sent is reduced, the ventilation efficiency becomes excellent. As a result, it is possible to provide a heater having an excellent heat exchange rate, and it is possible to incorporate a compact heater by improving the heat exchange rate.

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. The control circuit component block 62 includes first to third sub wiring boards 63, 64, 65. The first and second sub-wiring boards 63 and 64 are vertically provided so as to be in the same row behind the insulating substrate 51 of the voltage dividing resistor block 50.

In the control circuit component block 62, as shown in FIG. 2, the first and second sub wiring boards 63 and 64 are arranged in a laterally opposed manner with their plate surfaces facing in the air blowing direction.
Between the substrates 63 and 64, the toroidal core L is
Since electronic parts such as triacs and capacitors are arranged outside 3, 64, the blocks can be shortened in the front and rear to be compact, and the dryer can be made compact. Moreover, since the toroidal core 68 is well accommodated between both the substrates 63 and 64, even if the control components are arranged outside the both substrates 63 and 64, the control components are not so wide, so that they flow from the flow straightening blade 22. The outside air has a low resistance and flows smoothly, and the outside control circuit parts are cooled and protected by the outside air. Since the outside air easily flows between the two substrates 63 and 64, the toroidal core 68 is effectively cooled and protected.

At the position on the back side of the first wiring board 26, another second
The wiring boards 76 are provided so as to be parallel to each other. Second
As shown in FIG. 1, the wiring board 76 includes three temperature control lamps (issuing diodes D _{4 to} D ₆ ) 77, 78, 79 and a hot air control switch (S ₃ ) 80 in order from the front side. A wind speed control switch (division resistance changeover switch S ₂ ) 81 and a wind temperature fine adjustment volume (VR) 36 are arranged in series. Like the first wiring board 26, the second wiring board 76 also has a wiring plate made of a large number of conductive pieces embedded therein. The wiring plate and the wiring plate 28 of the first wiring board 26 are connected to each other by a large number of conductive connecting portions 82 which are integrated with these plates. The conductive connecting portions 82 are folded back at the folding position set near the second wiring board 76.
As a result, the second wiring board 76 is electrically molded together with the first wiring board 26 and is electrically connected between the operator side, the heater side and the control circuit component only by folding the second wiring board 76 so that they are back to back. The board unit body can be made compact, and the lead wires will not be connected later and troubles will not easily occur, which simplifies the assembly and improves the reliability. . Here, the voltage dividing resistance block 50 and the control circuit component block 62 are arranged on the front side of the heater block 35 in the air blowing direction, and the air temperature control switch 8 including the temperature control lamps 77 to 79.
The control system from 0 to the wind temperature fine adjustment volume 36
The heater block 35 is arranged so as to be on the front side in the blowing direction. As a result, the control circuit components and the operator system are effectively protected from the heat of the heater.

A cap 85 is attached to the back surface 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 switching main switch (S ₁ ) 86 is set on the cap 85.

Control lamps 77, 78, 79 for controlling the temperature
The operators of the air temperature and air volume control switches 80 and 81 are arranged in a straight line in series as described above. These are not arranged in one straight line, but as shown in FIG. 6, the temperature control lamps 77 to 79 are located in front of the operators of the air temperature and air volume control switches 80 and 81. , And are arranged so as to be close to each other. As a result, the control lamps 77 to 7
Not only can 9 and the operator not only provide a case that can be easily gripped in a narrow space before and after the width is narrow,
When the operating element of the air temperature control switch 80 is slid, the lit portions of the control lamps 77 to 79 are not hidden by the fingers to be seen.

A panel setting port 91 is opened in the second case body 3, and an operation panel 93 is elastically fitted into the setting port 91 via a hook 92. An operation port 94 and a lamp port 95 are formed on the operation panel 93 so that the operators and the control lamps D _{4 to} D ₆ are exposed. Volume 36 for fine adjustment of air temperature
As shown in FIG. 1, the operation panel 93 is hidden by fitting the operation panel 93. The temperature sensor 31 is provided on the blower port 12 side of the heater block 35 as described above. However, variations in air temperature (generated by variations in heater), variations in rotation speed, and sensor (PTC).
It is extremely difficult to set the PTC temperature to the target temperature due to the variation in the mounting position of. On the other hand, in the above example, the temperature sensor 31 to the fan 24 are mounted on the first wiring board 26, and the lamp D is mounted on the second wiring board 76.
₄ to D ₆ and operator sets those assembled adjustment knob 36 to the second casing member 3 therewith. After that, the first case body 2 is attached, the filter 20, the power cord 15 and the like are further assembled, and operation is performed in this state to confirm the characteristics. During this operation, the adjustment volume 36 absorbs variations in R _{1 to} R ₃ , PTC, and variations in the air temperature distribution in the portion where the PTC is attached,
The temperature sensor 31 is adjusted to adjust its characteristics. After that, the operation panel 93 is assembled and the assembly is completed. By doing so, the adjustment of the sensor can be simplified and a dryer having characteristics with little variation can be provided, and the operation panel 93 is finally attached to hide the adjustment volume 36.
There is also no fear that the characteristics will change due to movement of the volume 36 due to external factors such as external force.

In FIG. 3, R ₆ is a control lamp (light emitting element)
Resistor (for voltage drop), D ₃ is a rectifier for the lamp,
D ₁ , D ₂ and R ₄ are diode resistors for removing hysteresis,
R ₅ represents a protective resistance.

〔The invention's effect〕

As has been described above, in the hair dryer according to the present invention, the substrate mounting member is arranged such that the insulating substrate having the resistance wire for dividing the voltage applied to the motor wound therein corresponds to the front side of the motor in the air blowing direction. In the hair dryer, since the hair dryer is characterized in that the plate surfaces of the plurality of insulating substrates are installed in parallel with the air blowing direction, the air blowing loss is suppressed and the voltage dividing resistance means is suppressed. Can be made more compact.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an example of a hair dryer according to the present invention as a whole hair dryer, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is an electric circuit diagram of the hair dryer shown in FIG. FIG. 4 is a perspective view showing the mounting state of the voltage dividing resistor block of FIG. 2 at various angles, and FIG.
FIG. 6 is a front view showing a molded product of a conductive plate material used for a voltage dividing resistance block, and FIG. 6 is a front view showing the hair dryer of FIG. 1 as viewed from the operator side. 21 ... Motor, 51 ... Insulating substrate, 52, 53 ... First and second voltage dividing resistance wire (resistance wire)

Claims (2)

[Claims] 1. A hair dryer in which an insulating substrate in which a resistance wire for dividing a voltage applied to a motor is wound around a substrate mounting member is arranged so as to correspond to a front side of a motor in a blowing direction. A hair dryer, wherein each of the board surfaces of the board is installed so as to be parallel to the blowing direction. 2. An insulating substrate is composed of a pair of left and right, upper ends of these substrates are connected to each other by a conductive plate to form a gate shape, and a resistance wire between both substrates forms the conductive plate. The hair dryer according to claim 1, which is electrically connected via a hair dryer.