JPS62249606A - Hair dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

[Background technology]

The hair dryer is provided with a voltage dividing resistor so that the voltage applied to the motor can be changed, for example, in order to change the air volume. This voltage dividing resistor means is generally
It is constructed by winding a resistance wire around an insulating board that is erected on a wiring board, and is installed in front of the motor in the air blowing direction for cooling performance.

Conventional insulating boards have been installed so that the board surface is perpendicular to the direction of air flow. For this reason, the board width could not be made very wide to suppress air loss. For this reason, there is a problem that the resistance wire has to be wound around the insulated substrate in large numbers, and the insulated substrate must be made high (long).Furthermore, if a large resistance value is required, the insulated substrate is , a higher one is required, i.e.
Since the insulating substrate is tall (long), this accommodating portion is required, making it impossible to make the hair dryer itself more compact.

[Purpose of the invention]

In view of the above problems, it is an object of the present invention to provide a hair dryer in which the air blowing loss can be suppressed to a minimum and the partial pressure resistance means can be made more compact.

[Disclosure of the invention]

In order to achieve the above object, the present invention provides a hair dryer in which an insulating substrate around which a resistance wire for dividing the voltage applied to the motor is wound is disposed on the substrate mounting member so as to correspond to the front side in the air blowing direction of the motor. The hair dryer is characterized in that each of the plate surfaces of the plurality of insulating substrates is 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 embodiments thereof.

FIG. 1 shows one example of the hair dryer according to the present invention as a cross section of the entire hair dryer, and FIG.
The figure shows it disassembled except for a part and viewed diagonally from above. As seen in these figures, the main body of the hair dryer is provided with a body 1 on the outside.

The body l consists of two parts, one of which is a first case body 2 and the other is a second case body 3.

These first. The second case body 2.3 is provided with a mounting step portion 5 having an attachment/detachment button 4 at its tip, and an outside air intake port 6 and a connector mounting portion 7 at its rear end. Both case bodies 2.3 each have a semi-cylindrical shape and are combined to form a single cylinder. The mounting step portion 5
The base 9 is attached with a base 9 having an accent ring 8 at its base.The base 9 is integrally formed with a straight cylindrical base cylinder lO so as to cross the base at right angles to the tip thereof. It consists of a protective grid part 1). Air is blown through the gaps between the lattices of this protective lattice portion 1).

A rear end frame portion 14 having an outside air intake port 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. It is being Power cord 15 and connector ring 1
6 are connected to each other by a connecting cylinder 17, and the connecting cylinder 1
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 to attach the fixing ring 18 . A rear end cap 19 is attached to the outer periphery of the fixing ring 18.
is fitted, and an intake filter 20 is attached via this cap 19. A rectifier vane 22 is provided at the rear part of the body 1 and is provided with a motor (M) 21 at the center of the front end. The rectifier 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 . The air supply fan 24 sends the outside air sucked in from the outside air intake port 6 through the filter 20 to the rectifying blades 22, straightens it through the rectifying blades 22, and then passes it through an enclosure 25 provided at the front inside the body 1. Air is sent from the air outlet 12 of the cap 9 to a detachable attachment (not shown). The enclosing frame 25 is attached to the body l, and a first wiring board 26 is installed in the open bottom portion thereof. 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 Igi26 is formed by sandwiching a wiring plate 28 consisting of a large number of conductive pieces between upper and lower mounting plates 29, and an insulating plate 3o is attached to the upper surface of the wiring plate 28. ing. 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 upwardly stepped portion 27 at its front end on the upper surface facing the center of the body 1. Temperature sensor 3
1 is installed. As shown in FIG. 3, this temperature sensor 31 includes a positive characteristic thermistor (PTC) 32 and a PTC
It consists of a micro heater (μH) 33 for temperature control. The temperature sensor 31 is located on the first wiring board 26 which is arranged behind the aperture opening 34 corresponding to the inside of the mounting step 5, and the temperature sensor 31 is located at the tip of the first wiring board 26. Since it is located at a certain ascending step 27, it is placed close to the heater block 35 arranged at the rear, so that the heat source from the heater can be received more reliably with less air blowing resistance, and the arrangement has excellent responsiveness. This makes it easier to integrate and significantly improves safety. The amount of heat of the micro heater (μH) 33 is controlled by the micro heater (μH) 33 adjacent to the positive temperature coefficient thermistor (PTC) 32 when the positive temperature coefficient thermistor (PTC) 32 is set on the air outlet 12 side of the heater block 35. This is done by adjusting the electric power of
PTC) 32 temperature is controlled. Therefore, the resistance value of the positive temperature coefficient thermistor (PTC) 32 is determined in relation to the power value operated and adjusted by the micro heater (μH) 33, and the trigger of the triac (T) 49 is determined according to this determined resistance value. The starting phase point will be determined. Therefore, the amount of heat generated by the heater wire (H) 42 can be controlled by the resistors R1 to R3 and the adjustment polyneme VR. The heater block 35
The power amount of the heater wire (H) 42 is controlled by the sixth
As shown in the figure, phase control is performed by a triac (T) 49 using a circuit including a trigger capacitor (C, ) 47, a trigger element (SBS) 48, and the like. A thermoswitch (Th) 37 is arranged behind the temperature sensor 31 on the first wiring board 26 .

Behind this thermo switch 37, the first wiring board (
A voltage dividing resistor block 5 is installed in the center of the board mounting member) 26.
0 is located at the center of the width.

As shown in FIG. 4, this voltage dividing resistor block 50 is provided to divide the voltage applied to the motor 21, and is connected in series to the coil of the motor 21 on a pair of left and right insulating substrates 51. The first and second voltage dividing resistance lines (R7,
Re)52.53 is wound. In other words, the power supply voltage is divided by these resistance wires 52 and 53 and the coil of the motor 21. These insulating substrates 51.51 are arranged parallel to the direction of air blowing, as shown in FIG. Therefore, the insulating substrate 51 is formed to have a relatively large width, but a low height, and conductive plug legs 54 attached to protrude downward from the lower end of the insulating substrate 51 are connected to the first wiring. It is inserted and attached to the board 26. Left and right insulation boards 51.51
A conductive connecting piece 55 is attached between the upper ends of the connecting piece 55 so as to form a gate shape. As shown in FIG. 5, this connecting piece 55 is formed into a substantially T-shape by a connecting portion (conductive plate) 56 and a conductive support portion 57 orthogonal thereto, and mounting portions 58 are provided at both ends of the connecting portion 56. An insertion portion 59 is formed to protrude from one end of the conductive support portion 57 . The connecting portion 56 not only mechanically connects the side leading edge substrates 51.51, but also connects the first and second voltage dividing resistance wires 52.53 in each insulating substrate 51.51 via the connecting portion 56. It is also electrically connected. Based on the connecting portion 56,
The double numbered part 58 and the conductive support part 57 are bent at right angles so that the mounting part 58 is inserted into the upper end of the insulating board 51 and the insertion part 59 is inserted into the first wiring board 26, as shown in FIG. It has become.

Since the voltage dividing resistor block 50 has the plate surface of the insulating substrate 51 oriented parallel to the air blowing direction, the risk of resistance to air blowing is extremely reduced. Moreover, since the air blowing resistance can be kept sufficiently low, the insulating substrate 51 can be made wide, making it 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 are effectively cooled and protected. As shown in FIG. 5, 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. can. In addition, the insulating substrate 5
A temperature fuse 46 is installed between 1.51 and 51, making use of that space. The temperature fuse 46 reliably reacts to abnormalities in any usage of the three-switch blower circuit, thereby improving safety. In other words, when an abnormal overcurrent flows through the motor 21, the voltage dividing resistors 52 and 53 generate strong heat, and the temperature fuse 4
6 is melted. The partial voltage resistance is not used to switch the air volume.
In this way, it is sometimes used for safety protection.

The insulating substrates are preferably provided in a pair on the left and right, but are not limited thereto. The number of insulating substrates is not limited as long as they are arranged parallel to the direction of air blowing so as not to impede air blowing.

As the number of insulating substrates increases, finer air volume adjustment becomes possible.

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

This voltage dividing resistor block 50 and the thermo switch 37
A heater block 35 is arranged between them. As shown in FIG. 2, this heater block 35 includes a pair of conductive support pieces (hereinafter referred to as "support pieces") 38 at the front and rear.
．． It is equipped with 38. The support piece 38 includes a cylindrical insertion tube 39 and support legs 40 extending downward from the insertion tube 39 in a V-shape. The support piece 38 is entirely made of a conductive material, and an insulating pipe 41 is inserted between the two support pieces 38 through insertion tubes 39 and 39. This insulated pipe 41 has a heater wire (H) on its outer periphery.
It is equipped with 42. The heater wire 42 is formed into a ring shape using a strip-shaped material such that large covering parts and small covering parts alternate. This heater wire 42 is connected to the insulated pipe 4
They 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 (not shown) protruding from each lower end of the support legs 40, and is attached so that the center of the insulating pipe 41 is oriented parallel to the air blowing direction. There is. Since this heater block 35 is provided so that the heater '41A42 is wound around the outer periphery of the insulating pipe 41 which is provided so as to float on the support legs 40, the heater area can be increased in terms of dimensions. At the same time, the structure is such that there is little resistance to the rectified outside air that is 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.

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, and 65. 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.

The control circuit component block 62 is 1. As shown in FIG. Second sub-wiring boards 63 and 64 are arranged to face each other left and right, with their surfaces facing the air blowing direction, and a toroidal core L is placed between the boards 63 and 64.
Since electronic components such as a triac and a capacitor are arranged outside the 3.64, the front and rear blocks become short and compact, allowing the dryer to be made more compact. Moreover, since the toroidal core 68 is well placed between the two substrates 63 and 64, even if the control parts are placed outside of the two substrates 63 and 64, the width will not be too wide. The outside air flows smoothly with little resistance (and is curved), and the outside control circuit components are cooled and protected by the outside air. Since the toroidal core 68 is made to flow easily, the toroidal core 68 is effectively cooled and protected.

At a position on the back side of the first wiring board 26, there is another second wiring board.
The wiring boards 76 are provided in parallel. Second
As shown in FIG. 1, the wiring board 76 includes, in order from the front side, three temperature control control lamps (light emitting diodes D4 to D) 77, 78, 79, an air temperature control switch (S) 80, A wind speed control switch (partial voltage resistance changeover switch 5z) 81 and a volume (VR) 36 for fine adjustment of wind temperature are arranged in series. Like the first wiring board 26, this second wiring board 76 also has a wiring plate made up of a large number of conductive pieces embedded therein. This wiring plate and the wiring plate 28 of the first wiring board 26 are connected by a large number of conductive connecting portions 82 that are integral with both plates. These conductive connecting portions 82 are folded back at a folding position set close to the second wiring board 76 . Thereby, the second wiring board 76 is connected to the first wiring board 26.
By simply folding them back to back, you can create a compact board unit that electrically connects the operator side, heater side, and control circuit components. This simplifies assembly and improves reliability.Here, the voltage dividing resistor block 50, control circuit component block Reference numeral 62 is located on the front side in the air blowing direction than the heater block 35, and the operator system from the air temperature control switch 80 including the control lamps 77 to 79 for temperature control to the volume 36 for fine adjustment of the air temperature is also connected to the heater block 35. It is arranged so as to be on the front side in the air blowing direction than the block 35.Thereby, from the heater heat,
The control circuitry and the control system are effectively protected.

A heater block 3 is provided on the back side of the first wiring board 26.
A cap 85 is attached to correspond to 5. A slide member 87 that is slid by an ON/OFF switching main switch (S, ) 86 is set on this cap 85.

The temperature control lamps 77, 78, 79 and the controls for the air temperature and air volume control switches 80, 81 are arranged in series on one straight line as described above.

These are not simply arranged in a straight line, but as shown in FIG.
It is arranged in front of and close to the 0.81 operator. As a result, not only can the control lamps 77 to 79 and the operator be housed in a narrow space in the front and back that is easy to grip, but also the control lamps 77 to 79 and the operator can be easily held when sliding the operator of the air temperature control switch 80. There is no possibility that the lit parts of the lamps 77 to 79 will be hidden by fingers and become invisible.

A panel setting opening 91 is opened in the second case body 3, and an operation panel 93 is elastically fitted into the setting opening 91 via a hook 92. This operation panel 93 has an operation port 94 and a lamp 95 formed therein, so that the operation element and the control lamps D4 to D6 face each other. Volume 3 for fine adjustment of air temperature
6 is hidden by the fitting of the operation panel 93, as shown in FIG. As mentioned above, the temperature sensor 31 is provided closer to the air outlet 12 than the heater block 35, but due to variations in air temperature (occurred due to variations in the heater), variations in rotation speed, and the sensor (PTC
) It is extremely difficult to set the PTC temperature to the target temperature due to variations in the mounting position of the PTC. On the contrary,
In the above example, the first wiring board 26 is assembled with everything from the temperature sensor 31 to the fan 24, and the second wiring board 76 is assembled with the lamps D4 to D, the controls, and the adjustment volume 36, and then the second case body is assembled. 3 cents. After that, the first case body 2 is attached, and the filter 20.
The power cord 15 and the like are assembled, and the machine is operated in this state to check the characteristics. During this operation, the characteristics of the temperature sensor 31 are adjusted by absorbing and adjusting variations in R0 to R, PTC and variations in the wind temperature distribution in the area where the PTC is attached using the adjustment volume 36.

After that, the operation panel 93 is assembled to complete the assembly. If this is done, sensor adjustment becomes easy and a dryer with characteristics with little variation can be provided, and the operation panel 93 is assembled last and the one-round adjustment volume 36 is hidden. Therefore, there is no fear that the volume 36 will move later due to an external factor such as an external force and the characteristics will change.

In addition, in Fig. 3, R is a control lamp (light emitting element).
(for voltage drop), D3 is the rectifier for the same lamp, D
+, Dt, and R4 are diode resistors for removing hysteresis, and R2 is a protection resistor.

〔Effect of the invention〕

As described above, in the hair dryer according to the present invention, the insulating substrate, on which the resistance wire for dividing the voltage applied to the motor is wound, is arranged on the substrate mounting member so as to correspond to the front side of the motor in the air blowing direction. The hair dryer is characterized in that each of the plate surfaces of the plurality of insulating substrates is installed parallel to the air blowing direction, so that air blowing loss can be suppressed to a low level and the voltage dividing resistor means It has become possible to make it more compact.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of an example of the hair dryer according to the present invention, showing the entire 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. 1. Figure 4 is a perspective view of the installed state of the voltage dividing resistor block in Figure 2, with the angle changed;
The figure is a front view of a molded product of a conductive plate material used in a voltage dividing resistor block, and FIG. 6 is a front view of the hair dryer of FIG. 1, viewed from the operator side.

Claims (2)

[Claims] (1) In a hair dryer in which an insulating board around which a resistance wire for dividing the voltage applied to the motor is wound is arranged on the board mounting member so as to correspond to the front of the motor in the air blowing direction,
A hair dryer characterized in that each of the plurality of insulating substrates is installed such that each plate surface is parallel to the direction of air blowing. (2) There is a pair of left and right insulating substrates, and the upper ends of these substrates are connected to each other by a conductive plate to form a gate shape, and the resistance wire between both substrates is connected through the conductive plate. The hair dryer according to claim 1, wherein the hair dryer is electrically connected.