JPH081Y2 - Hair dryer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a hair dryer, and more specifically, it is characterized mainly in how to accommodate and arrange the switch part thereof.

[Conventional technology]

Examples of hair dryers of this type are shown in FIGS. 9 and 10 (Japanese Utility Model Publication No. 58-169802 and Japanese Patent Publication No. 57-35004). In FIG. 9, the power switch 18 is formed between the heat shield cylinder 17 surrounding the heater wire 16 of the heat generating device 5 housed in the main body case 1 having a circular cross section and the inner wall of the main body case 1. It is disposed in the switch storage space S. The switch storage space S is
The heat shield cylinder 17 is eccentrically arranged with respect to the center of the cross section in the main body case 1, and the flat portion 17a and the main body case are formed by forming a flat portion 17a on the outer wall of the heat shield cylinder 17 opposite to the eccentric side. It is formed between the inner wall 1 and a flat support frame 65 in the space S, and the power switch 18 is arranged on the frame 65.

Further, in the structure shown in FIG. 10, the switch surrounding wall 66 is provided so as to project from a part of the outer peripheral wall of the main body case 1 to the outside of the case,
The power switch 18 is housed in the switch surrounding wall 66.

[Problems to be solved by the device]

This kind of hair dryer is used not only for drying hair, but also for curling,
At the time of use, the main body case 1 itself is grasped and used directly. Therefore, it is desired that the outer size of the body case 1 be as thin as possible so that it can be easily gripped. On the other hand, if the outer size of the main body case 1 is made thin, the space for accommodating the heat generating device 5 by the heater is narrowed and the heat generating capability is reduced.

Such contradictory problems are slightly difficult to solve by the above-mentioned conventional arrangement method of storing the switch part of the hair dryer. That is, as shown in FIG. 9, the heat shield cylinder 17 surrounding the heater wire 16 is eccentrically arranged in the main body case 1, and the power switch 18 is housed in the space S formed on the side opposite to the eccentric side. Then, when the main body case 1 is set to a predetermined diameter that is easy to grip, the heat shield cylinder 17 must be thinned by the eccentricity thereof, and the winding diameter of the heater wire 16 is reduced accordingly, resulting in a decrease in heat generation capability. is there.

Further, as shown in FIG. 10, in the case where the switch enclosing wall 6 is formed so as to project on the outer peripheral surface of the main body case 1, the entire interior of the main body case 1 can be used as a storage space for the heat generating device 5, so that the heat generating capacity is ensured. You can, but body case 1
This is because it is difficult to grip the main body case 1 by the switch surrounding wall 66 protruding from the outer peripheral surface of the main body case 1.

Further, in the one shown in FIG. 10, the power switch 18 is directly attached to the main body case 1, so that the attaching work is troublesome. On the other hand, in the case shown in FIG. 9, since a flat plate-shaped support frame 65 is prepared separately from the main body case 1, and the power switch 18 is pre-assembled to the support frame 65, mounting to the main body case 1 However, the problem is that when the support frame 65 is attached to the main body case 1, the problem is that the switch knob 20 for operating the switch 18 projects from the opening 67 provided in the main body case 1. In addition, it is necessary to position the switch operating knob 20 so that the switch operating knob 20 projects from the opening 67 of the main body case 1, and in this respect, the workability of assembling the switch is poor.

The present invention solves such a problem, and in the hair dryer including the switch unit and the heating device as described above,
An object of the present invention is to increase the storage space of the heat generating device without making the main body case thick by improving the storage arrangement of the switch part.

Another object of the present invention is to improve the workability of assembling the switch part.

[Means for solving the problem]

In order to achieve the above object, in the hair dryer of the present invention, the main body case 1 that internally houses the heat generating device 5 and the blower device 6 is elongated in the front-back direction by butt-joining the left and right two-part split cases 1a and 1b. It is formed in a cylindrical shape and has a switch case 22 in which the power switch 18 and its switch knob 20 are assembled in advance.
22 has side walls 24 and 24 continuously provided from the left and right ends of the upper wall 23, supports a power switch 18 slidable in the front-rear direction between the inner side walls 24 and 24, and also has an opening 25 in the upper wall 23. A switch knob 20 for operating the power switch 18 is mounted so that it can be slid in the front-back direction.
Between the abutments 1a and 1b, the side walls 24 and 24 of the switch case 22 are sandwiched and fixed on the outer periphery of the heat generating device 5, and the engaging claws 37 provided on the side walls 24 and 24 of the switch case 22. 37 is adapted to engage with the rim of the butted portion of the two-part split cases 1a and 1b so as not to come out upward.

[Action]

When the switch case 22 is arranged between the abutments of the two split cases 1a and 1b abutting each other on the outer periphery of the heat generating device 5, the abutment of the abutments can be effectively used as a space for accommodating the switch part, and thus the main body case 1 It becomes possible to dispose the entire circumference of the heat generating device 5 concentrically and as close as possible to the inner wall with no space therebetween, and the heat generating device 5 can be dimensioned to have the inner diameter of the main body case 1 without making the main body case 1 thick. Therefore, the storage space for the heat generating device 5 can be expanded.

Further, since the switch case 22 is preassembled with the power switch 18 and the switch knob 20, the switch case 22 is attached to the main body case 1 and at the same time, the assembled state of the power switch 18 and the switch knob 20 is obtained. Therefore, when mounting the switch case 22, it is not necessary to perform complicated positioning and alignment of the switch knob 20 of the power switch 18 with respect to the main body case 1, so that the assembling work can be rationalized.

〔Example〕

An embodiment of the hair dryer according to the present invention will be described with reference to FIGS.

In FIG. 1 and FIG. 2, the main body case 1 thereof is shown.
The left and right plastic two-part split cases 1a and 1b are abutted against each other to form a slender cylindrical shape in the front-rear direction, which doubles as a grip, and has a blowout port 2 at its front end and a suction port 3 and a cord at its rear end. Each of the lead-out portions 4 is formed. A heat generating device 5 is provided inside the main body case 1.
The air blower 6 and the air blower 6 are arranged in front and in back. Outlet 2
An attachment 7 such as a blowing nozzle is detachably attached to the. A switch portion 8 is arranged in a position corresponding to the upper outer periphery of the heat generating device 5 in the main body case 1.

The blower device 6 has a motor 9 and a fan 11 fixed to a shaft 10 protruding from the rear end surface of the motor 9. The motor 9 is internally fitted and fixed in a plastic cylindrical motor holding case 12. A straightening vane is provided on the outer peripheral surface of the motor holding case 12.
13 are formed integrally in a radial manner, and a fan guide cylinder 14 is integrally formed so as to project rearward from the rear end of the outer periphery of the rectifying blade 13,
The fan 11 is housed inside the fan guide cylinder 14 with a predetermined gap between the tip of the fan 11 and the inner wall of the fan guide cylinder 14.

The heat generating device 5 is a cross-shaped insulating plate when viewed from the front.
A heater wire 16 is wound around 15, and the insulating plate 15 and the heater wire 16 are housed in a heat shield cylinder 17 which is long in the front-rear direction.

Here, since there is little insulation space between the input terminals 70, 70 at the rear end of the motor 9 and the heat generating device 5, as shown in FIG. A motor end cap 71 made of an insulating material is fitted so that the input terminals 70, 70 project. As shown in FIGS. 7 and 8, the outer surface of the motor end cap 71 also serves as a substrate on which the bridge diode 72 for rectifying the power supply to the motor 9 and the noise prevention capacitor 73 are arranged. Further, the motor end cap 71 is provided with a positioning pin 74 arranged so as to surround the outer periphery of the bridge diode 72 and a projection 75 having a retaining hook 75a at its tip in order to prevent the wobbling of the bridge diode 72. In particular, the protrusion 75 is arranged so as to be located between the pair of AC input terminals 76, 76 of the bridge diode 72 to prevent a short circuit between the AC input terminals 76, 76. Further, the protrusion 77 is attached to the motor end cap 71.
a and projections 77b and 77b located on both sides thereof are provided, and when the bridge diode 72 is installed in the motor end cap 71, the AC input terminal 76 is inserted between the projections 77a and 77b, so that the bridge diode 72 is also installed in the motor end cap 71. The AC input terminals 76 and 76 are not short-circuited.

The blower device 6 and the heat generating device 5 are provided in the main body case 1.
As shown in FIG. 4, before being incorporated into the cable, it is preliminarily connected together with the switch portion 8 and the like, and the cord lead-out portion 4
It has a lead wire 39 which is supplied with electric power from. A terminal holding cylinder 28 is provided at the end of the lead wire 39 on the cord pull-out side,
As shown in FIG. 2, terminals 29a and 29b are provided in the cylinder 28.

The switch unit 8 is a slide-type power switch 18 that enables switching on / off of the power source and switching between hot air and cold air.
And a push-type rapid cooling change-over switch 19 capable of instantly switching from warm air to cold air are assembled in the switch case 22. That is, as shown in FIG. 4, the switch case 22 is a plastic molded product, and has a U-shaped cross-section having a long and narrow upper wall 23 and side walls 24 and 24 connected downward from the left and right ends of the upper wall 23. Formed. This switch case 22
The power switch 18 and the rapid cooling changeover switch 19 are housed in the front and rear of the switch. In this case, as shown in FIG. 1, the power switch 18 is installed between the side walls 24 and 24 in the switch case 22. As shown in FIG. 2, the rapid cooling changeover switch 19 is a substrate installed between the side walls 24 and 24 in the switch case 22.
It is mounted on the board 27, and parts such as a rectifier are also mounted on the board 27. In addition, a switch knob 20 for operating the power switch 18 is slidably mounted in the front-rear direction in the hole 25 on the front side of the holes 25 and 26 opened in the upper wall 23 of the switch case 22 in the front-rear direction. A switch knob 21 for operating the rapid cooling changeover switch 19 is mounted in the hole 26 so as to be retractable.

The power switch 18 controls energization of the heat generating device 5 and the blower device 6 to change the operating state from off to cool air / weak hot air.
Switch in order of strong hot air. In FIG. 6, the switch 18 has five connecting terminals of the first terminal to the fifth terminal, and the switch knob 20 moves from the off position to the arrow P in FIG.
The terminals are connected as shown in the table of FIG. 6 by sequentially slidingly moving forward in the direction indicated by
Change the operating status. The rapid cooling changeover switch 19 is interposed in the circuit between the second terminal and the heater 16a for weak warm air. When the quenching changeover switch 19 is turned off, the heater 16a for weak hot air is de-energized, and at the same time the rectifier 30
The voltage value applied to the motor increases, and the rotation speed of the motor 9 increases. In FIG. 6, reference numeral 31 is a control resistor, for example,
When the resistance value of the heater 16a for low temperature air is 15.7Ω and the resistance value of the heater 16b for high temperature air is 5.9Ω, the resistance value of the control resistor 31 is 112Ω. 32 is a thermal fuse.

Next, each operation mode will be described. First, when the switch knob 20 is moved to the COOL display position, the first terminal and the fourth terminal are turned on, and the third terminal and the fifth terminal are turned on, so that the current from the power supply passes through the terminal and the motor 9
After rotating, it flows through the terminals and terminals through the control resistor 31 and the temperature fuse 32, and the heaters 16a and 16b are not energized and do not heat up, so they operate in the cold air state.

Next, move the switch knob 20 to the Low display position,
The 1st and 4th terminals are turned on, and the 2nd and 4th terminals are turned on.
Since the terminal is turned on, the current flowing from the power source to the heater side heats the heater 16a and the heater 16b through the terminal and the terminal, and the current flowing from the power source to the motor side passes through the terminal to the motor 9. After spinning
It returns via the control resistor 31, the thermal fuse 32, and the heater 16b. Therefore, the motor 9 is a heater as compared with the case of the cold air.
The rotation speed decreases due to the voltage drop of 16b, and it operates in a weak warm air condition.

Further, if the switch knob 20 is moved to the HIGH display position, the first terminal and the fourth terminal, the second terminal and the fourth terminal, and the third terminal and the fifth terminal are turned on, so that the current flowing from the power supply to the heater side is The heater 16a is energized and heated through the terminals, terminals, terminals, and the thermal fuse 32, terminals,
The current flowing to the motor side while returning via
After rotating the motor 9 through the terminals, the terminals are fed back through the terminals and the terminals through the control resistor 31 and the thermal fuse 32.

Therefore, at the time of the Low display position, the heater 16b is additionally short-circuited and the current flows, so that the motor rotation speed and the heat generation of the heater 16a both increase due to the absence of the voltage drop due to the heater 16b, and the heater 16b operates in the strong warm air state.

The switch portion 8, the heat generating device 5, and the blower device 6 which are pre-wired as described above are assembled to the main body case 1 in the following manner. First, the left and right two-part split cases 1a and 1b are butted, and the heat shield cylinder 17 of the heat generating device 5 and the fan guide cylinder 14 of the blower device 6 are laid between the two cases 1a and 1b, and the switch case 22 is attached. A two-piece case in which the upper surface of the heat shield cylinder 17 of the heat generating device 5 is butted against each other
Clamp between 1a and 1b butts and fix. As shown in FIG. 4, the switch case 22 is sandwiched and fixed by forming notches 35 and 36 at the abutting edges of the two-part split cases 1a and 1b, respectively, as shown in FIG. 1 and FIG. This is done by fitting the switch cases into the switch case fitting openings 34 formed between the notches 35 and 36 when the 1a and 1b are butted. In this case, as shown in FIG. 3, both side walls of the switch case 22 are
By engaging the front and rear engaging claws 37 respectively provided on 24 and 24 with the edge of the switch fitting port 34, the case 22 can be prevented from coming off upward.

In FIG. 2, an attachment / detachment operation button 45 for retaining and holding the attachment 7 inserted in the outer peripheral wall of the outlet 2 is attached to the front side of the switch case 22 on the two-divided cases 1a and 1b. The attachment / detachment operation button 45 is removably fitted via a spring 46 between the butts of the two-part split cases 1a and 1b,
The spring 46 constantly biases the protrusion. Detachable operation button
A lock claw 47 is provided at 45, and this lock claw 47 engages with a recess 48 provided in the attachment 7 to prevent the blowout port 2 from coming off. When the attachment / detachment operation button 45 is pushed against the spring 46, the engagement of the lock claw 47 with the recess 48 is released, and the attachment 7 can be removed from the outlet 2. As shown in FIG. 5, the attachment / detachment operation button 45 is provided on the switch case 22 on the switch knob 20.
In the state in which it is mounted on the case side lower than any of 21 and is pushed in most strongly (solid line state in FIG. 5), the inclined surface extension line T of the chamfered portion 49a at the front end of the switch case 22 and the pressing of the button 45. The upper surface 45a is set to intersect (the intersection of the inclined surface extension line T and the pressing upper surface 45a of the button 45 is set to O
Is taken into consideration so that there is no risk of pinching a finger between the button 45 and the straight wall 49b below the chamfered portion 49a of the switch case 22 during the pressing operation.

Next, the heat insulating cylinder 50 having a C-shaped cross section is divided into two cases 1a.
By inserting into 1b from the front of it, the outer circumference of the two-part split case 1a, 1b corresponding to the outer circumference of the heat generating device 5 has a heat insulating structure, and also has a fastening function for holding the butted state of the two-part split case 1a, 1b. It is exerting. The open ends 50a and 50b of the heat insulating tube 50 cover the mating portions of the side walls 24 and 24 of the switch case 22 and the two-divided cases 1a and 1b with a good appearance. Further, the heat insulating cylinder 50 has holes 59, 59 (first hole) provided with retaining projections 58, 58 (see FIG. 4) provided on the inner surface of the front end thereof on a part of the outer peripheral wall of the air outlet 2 of the two-divided cases 1a, 1b. (See FIG. 4), the heat insulating cylinder 50 is restricted from coming out forward. Further, as shown in FIG. 4, expansion restricting claws 51, 51 are provided at the rear end of the heat insulating cylinder 50, and the claws 51, 51 are engaged with holes 52, 52 provided in the two-part split cases 1a, 1b. By inserting, the heat insulating cylinder 50 is prevented from expanding and deforming on the main body case 1. If the heat insulating cylinder 50 is formed of a material having a high heat insulating effect, for example, foamed resin, a higher heat insulating effect can be obtained, and it is also preferable to provide irregularities on the surface thereof. Furthermore, if a gap is formed between the two-divided cases 1a and 1b and the inner surface of the heat insulating cylinder 50, it is more advantageous in terms of the heat insulating effect.

A metal fastening ring 53 is inserted on the outer peripheral wall of the outlet 2 of the two-part split cases 1a and 1b to more reliably maintain the abutted state at the front ends of the two-part split cases 1a and 1b.

As shown in FIG. 2, on the rear end side of the two-part split case 1a, 1b, a radial radial rib 54 is formed at the center of the suction port 3.
The terminal holding cylinder 28 of the lead wire 39 is bound by the half-split cord outlet cylinders 55, 55 supported by. The lead wire 39 from the cord outlet cylinder 55 is first led out to the outside of the case from between the radial ribs 54, 54 of the suction port 3 so as not to be entangled with the fan 11, and the radial ribs 54, 54 are connected to each other. A two-piece case that is introduced again into the case by straddling the connected circumferential ribs 64 and then abutted against each other on the peripheral surface of the fan guide cylinder 14.
It is led out to the outside of the case from the lead wire outlet 41 formed at the butt of 1a and 1b, and then drawn into the case again. Lead-out portion led out to the lead wire lead-out port 41 of the lead wire 39
39a is covered with a cover portion 38 extending to the rear end side of the switch case 22. The cover portion 38 is provided with an engaging claw 40, and the claw 40 is engaged with the edge of the lead wire outlet 41 to prevent the cover 38 from rising.

In addition, the end portion having the contacts 43a and 43b of the swivel-type electric cord 43 is inserted into the terminal holding cylinder 28 to insert the contacts 43a and 43b.
Is rotatably contacted with terminals 29a and 29b. In this case, the locking protrusion 42 is provided inside the rear end of the cord outlet tube 55, and the annular groove 44 is provided on the outer periphery of the end portion of the electric cord 43 so that the end portion of the electric cord 43 is fixed by the cord outlet tube 55. By engaging, the locking projection 42 is locked in the annular groove 44, and the electric cord 43 is rotatably mounted.

Further, a tube 57 provided at the center of the suction port filter 56 is inserted from the rear side into the outer periphery of the rear end of the cord outlet cylinder 55, so that the rear ends of the two split cases 1a and 1b are fastened. The suction port filter 56 has an engaging claw 60 on the front end side of the cylinder 57.
By providing 60 and engaging the claws 60, 60 with the engaging holes 61, 61 provided in the cord outlet cylinder 55, the suction port filter 56 does not come out backward from the cord outlet cylinder 55. I am trying.

[Another embodiment]

The rapid cooling changeover switch 19 is not always necessary, and therefore at least the power switch 18 and its switch knob 20 may be assembled in the switch case 22 in advance.

[Effect of device]

In the hair dryer of the present invention, the power switch 18 and the switch knob 20 are assembled in advance to the switch case 22, so that the power switch 18 and the switch knob 20 can be attached to the main body case 1 by simply attaching the switch case 22 to the main body case 1. Can be easily assembled to. Not only that, the switch case 22 is designed to be sandwiched between the two divided cases 1a and 1b that are butted against each other on the outer periphery of the heat generating device 5, so that the switch case 22 can be compactly stored and the main body case 1 It can be easily gripped without making it thick.

Although the power switch 18 is attached inside the switch case 22 in advance,
Since both side walls 24, 24 of 22 are sandwiched and fixed by the two-part split case 1a, 1b, the open side of the switch case 22 is sandwiched and the power switch 18 does not fall off from this open side. Moreover, since the combined tightening force of the two-piece case that sandwiches the open side of the switch case 22 is applied to both side walls of the switch case 22, it does not directly affect the power switch 18 in the switch case. Switch 18
The restriction of the movement of the inner contact member and the movement of the switch knob 20 by the tightening force is reduced. That is, the slide operation force of the switch does not change due to the variation in the holding force.

Moreover, since the engaging claws 37 on the lower left and right side walls of the switch case 22 are locked between the mating surfaces of the two-part case, the power switch 18 in the switch case 22 is located on the heating device 5 side of the main body. There is no need to squeeze in, and there is no need to provide a relief shape for the power switch 18 in the shape of the heating device part,
There is an advantage that the storage space of the heat generating device 5 can be expanded and the heat generating capacity can be sufficiently secured.

Further, the switch case 22 can be assembled by a simple operation of simply sandwiching the two divided cases 1a and 1b at the time of assembling the main body case 1, and the assembly workability is excellent.

[Brief description of drawings]

1 to 8 show an embodiment of a hair dryer according to the present invention. FIG. 1 is an enlarged sectional view taken along the line AA in FIG. 2, FIG. 2 is a longitudinal side view of the whole, and FIG. 3 is the second
The BB line expanded sectional view in a figure, FIG. 4 is an exploded perspective view,
FIG. 5 is a side view of the attachment / detachment operation button portion of the attachment,
FIG. 6 is an electric circuit diagram, FIG. 7 is a front view of the rear end portion of the motor, and FIG. 8 is a perspective view showing a state in which the motor end cap and electric parts are separated from the rear end portion of the motor. FIG. 9 is a schematic sectional view of a main part of a conventional hair dryer. FIG. 10 is a schematic sectional view of a main part of another conventional hair dryer. 1 …… Main body case, 1a ・ 1a …… Divided case, 5 …… Heat generator, 6 …… Blower, 18 …… Power switch, 20 ……
Switch knob, 22 …… Switch case.

 ─────────────────────────────────────────────────── ───Continued from the front page (56) References Microfilm (JP, U) of the contents and drawings attached to the application of Japanese Utility Model Application No. 60-146114 (Japanese Utility Model Application No. 62-54435)

Claims (1)

[Scope of utility model registration request] 1. A main body case 1 for accommodating a heat generating device 5 and a blower device 6 inside is formed in a long and thin cylindrical shape in the front-rear direction by butt-joining left and right two-part split cases 1a and 1b. 18 and its switch knob
20 has a switch case 22 assembled first, and the switch case 22 has side walls 24 and 24 continuously provided from the left and right ends of the upper wall 23, and slides in the front-back direction between the inner side walls 24 and 24. Supports the flexible power switch 18 and opens the upper wall 23
Switch knob 20 to operate power switch 18 to 25
Is mounted so as to be slidable in the front-back direction, and both side walls 24 and 24 of the switch case 22 are sandwiched and fixed between the abutments of the two-part split cases 1a and 1b on the outer periphery of the heat generating device 5. A hair characterized in that the engaging claws 37, 37 provided on both side walls 24, 24 of the case 22 are engaged with the rims of the abutted joints of the two-part split cases 1a, 1b in a manner that prevents them from coming off upward. Dryer.