JP3482508B2 - Hair dryer - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable hair dryer in which a main body case containing a blower fan and a heater doubles as a grip for being held by a palm. 2. Description of the Related Art As a hair dryer of this type, for example, as disclosed in Japanese Utility Model Publication No. 33-5255, a main body case is formed in a bottomed cylindrical shape, and a suction is made at the bottom of the main body case. Some have a mouth and an outlet at the front end opposite to the bottom. In use, the rear side of the outer surface of the main body case is gripped by the palm, so there is no need to provide a special grip, and the entire body is compact and convenient to carry when traveling. However, in the above-mentioned conventional hair dryer, a suction port is provided at the bottom of the main body case, so that the suction port is held by a palm or a finger gripping the outer surface of the main body case. Easy to be blocked. For this reason, the blowing amount of the wind becomes unstable. If the suction port is closed when using hot air, the temperature inside the main body case rises excessively, and the components inside the main body case are thermally damaged by this overheating. Further, the temperature of the warm air blown out from the outlet also rises above a predetermined value, so that the hair is easily damaged. In order to avoid such inconveniences, when grasping the outer surface of the main body case with the palm, it is necessary to slightly lift the palm from the outer surface of the bottom having the suction port and grasp it slightly. It is difficult and the usability is poor. SUMMARY OF THE INVENTION It is an object of the present invention to provide a compact hair dryer in which a bottomed cylindrical main body case also serves as a grip. The point is to prevent blocking of the mouth. [0005] As a premise of the present invention, a hair dryer as a premise of the present invention has a main body case 2 containing a heater 3 and a blower fan 21 formed in a cylindrical shape with a bottom as shown in the illustrated example. An air outlet 1 is provided at the front end opposite to the bottom of the main body case 2, and the blower fan 21 blows outside air sucked into the main body case 2 from an outer air inlet 4 provided in the main body case 2 through the heater 3. 1, the main body case 2 also functions as a grip for gripping with the palm on the rear side from the front end of the outer surface of the main body case 2. Then,
The present invention is characterized in that the outer suction port 4 is provided at the front end side of the main body case 2 so as to communicate with the suction side of the blower fan 21. The outer suction port 4 provided on the front end side of the main body case 2 is not blocked by the hand holding the rear side of the front end of the outer surface of the main body case 2. Therefore, according to the hair dryer of the present invention, since the outer suction port 4 is not closed by the hand holding the main body case 2 at the time of use, a stable amount of wind is always supplied from the outlet 1. Can be blown out, and overheating in the main body case 2 can be prevented, so that each component in the main body case 2 is not thermally damaged. Further, the temperature of the warm air blown out from the outlet 1 can be maintained at a predetermined temperature, and there is no advantage that the hair is damaged. In addition, since the rear bottom portion of the main body case 2 can be held only in the palm without blocking the outer suction port 4, the usability is very good. An embodiment of a hair dryer according to the present invention will be described with reference to FIGS. In FIG. 1, the main body case 2 has an inner cylinder 10 having front and rear ends opened through.
The outer cylinder 11 has a front end opened and a rear end closed and is covered with a bottomed cylindrical outer cylinder 11 and both the cylinders 10 and 11 are integrally connected by screws 39 and the like. And the outer suction port 4 is formed between the front ends of the inner and outer cylinders 10 and 11 respectively. In FIG. 1, an inner cylinder 10 has an outlet 1 at an opening at a front end and an inner suction port 40 at an opening at a rear end of a peripheral wall 26 made of a plastic material having excellent heat resistance. A front flange 27 of the U-shaped cross section is formed on the outer periphery of the outlet 1 by extending the front end of the peripheral wall 26 outward and further extending rearward. The heater 3 and the air blower 5 are housed and arranged inside the inner cylinder 10 with the front and back. Blower 5
Is a DC motor 20 as shown in FIGS.
And an axial flow type blower fan 21 fixed to a rotating shaft of the fan.
And a rectifier circuit 2 for applying a DC voltage to the motor 20
2 and radial rectifying blades 23 fixed to the outer periphery of the motor 20
And In FIG. 6, reference numeral 20a denotes a motor resistance. The blower 5 is provided in the inner cylinder 10 so that the motor 20 faces forward and the blower fan 21 faces backward,
The ring 23a integrally formed on the outer periphery of the inner cylinder 10 is housed by being integrally connected to the rear end of the inner cylinder 10. Blow fan 2
The outer periphery of 1 is surrounded by a fan tube 25 fitted and fixed to the outer periphery of the ring 23a, and the inside suction port 40 is formed at the rear end side in the fan tube 25. 1 and 3, the heater 3 is housed and arranged from the outer periphery of the motor 20 in the inner cylinder 10 to the front of the motor 20 via a heater support plate 15. Heater support plate 1
Numeral 5 is made of an insulating material, and comprises a cylindrical portion 16 fitted and fixed to the outer periphery of the motor 20 and four radial plates 17 extending radially from the outer periphery at 90 ° intervals.
The heater 3 is spirally wound around a notch groove provided on the outer edge of the heater 7. Inside the inner cylinder 10, a ventilation plate 19 is formed by a radiation plate 17 and divided into four in the inner circumferential direction. In FIG. 1 and FIG. 3, the outer cylinder 11 is formed of a plastic material having excellent heat resistance and is formed in a bottomed cylinder having a size that can be gripped by a palm. It has an attractive appearance. A plurality of spacers 33 are integrally formed radially on the inner periphery of the outer cylinder 11 at equal intervals in the circumferential direction, and each spacer 33 is a plate continuous from near the front end opening of the outer cylinder 11 to the rear bottom portion 34. It is formed in a shape. Thus, in order to connect the outer cylinder 11 and the inner cylinder 10, the spacer 33 of the outer cylinder 11 is required.
The rear end side of the inner cylinder 10 is fitted to the inner periphery of the inner cylinder 10 from the front thereof to a predetermined depth, and by this fitting, a certain spacer 3 in the outer cylinder 11 is fitted.
A boss 35 provided between the inner cylinder 3 and the rear flange 2
7 and the boss 30 provided in the
By screwing 9 through the hole of the boss 30 and into the lower hole of the boss 35, the two tubes 10 and 11 are integrally connected. When the inner and outer cylinders 10 and 11 are connected, the outer cylinder 11 is dimensioned so that the front end of the outer cylinder 11 can enter substantially the center of the annular groove in the rearward flange 27 of the inner cylinder 10 in the depth direction. Between the front end portion of the and the rearward facing flange 27, an outer suction port 4 having a U-shaped cross section that opens rearward is formed in an annular shape,
The outer suction port 4 is provided with a spacer 33 between the inner and outer cylinders 10 and 11.
Communicates with the suction side of the blower fan 21 through an outside air introduction passage 42 formed through the air passage. In addition, it is preferable to mount a filter 24 for preventing intrusion of dust, hair, and the like into the outer suction port 4. When the blower fan 21 rotates with the driving of the motor 20, outside air is sucked in from the outer suction port 4 and blows through the outside air introduction passage 42 between the inner and outer cylinders 10 and 11 and the inner suction port 40. The air is blown axially forward of the fan 21. The air sent forward in the axial direction of the blower fan 21 is rectified by the rectifying blades 23 and is blown outward from the outlet 1 through the ventilation passage 19 where the heater 3 exists. In use, the outer cylinder 11 is gripped by the palm at the bottom 34 at the rear of the outer surface, and the fingertip is grasped forward. In this case, the outer suction port 4 is provided at the front end side of the outer cylinder 11. There is no danger of being blocked by the gripping hand. For this reason, the amount of wind blown out from the outlet 1 is stable, and the wind can be efficiently applied to the hair. In addition, the temperature inside the inner cylinder 10 does not rise abnormally when hot air is used, and each component in the inner cylinder 10 can be prevented from being damaged by heat, and their durability can be improved. Since the outside suction port 4 is not closed, the temperature of the warm air blown out from the outlet 1 can be maintained at a predetermined temperature, and the hair is not damaged by heat. When the back of the outer surface of the outer cylinder 11 is gripped behind the front end by the palm, the outlet 1 coincides with the direction of the fingertip. Therefore, the outlet 1 is easily directed to the surface of the head, and the position of the outlet 1 is adjusted to the position of the head. It is easy to move freely along the surface. Therefore, the wind blown out from the outlet 1 can be easily applied to a desired portion on the surface of the head, and it is easy to use, including ease of holding. The outer suction port 4 is present on the outer periphery of the outlet 1, but is opened toward the rear side of the main body case 2 in a direction opposite to the outlet 1 via the rearward flange 27. For this reason, the air sucked into the outer suction port 4 does not enter the main body case 2 and is not blown forward along with the wind blown out from the outlet 1 as it is. Further, there is no fear that the hair soared by the wind from the outlet 1 is sucked into the outer suction port 4. The entire inner surface of the outer cylinder 11 facing the outside air introduction passage 42 is always cooled by fresh outside air sucked from the outside suction port 4. In addition, the outside air in the outside air introduction passage 42 also serves as an effective heat insulating layer, and suppresses heating of the outer cylinder 11 due to heat generated from the heater 3 and the motor 20 of the blower unit 5. Therefore, when the outer surface of the outer cylinder 11 is gripped and held by the palm, discomfort due to heat is hard to be recognized, and the usability is good. When the outer cylinder 11 is used as described above, the outer cylinder 11 is grasped by the palm at the rear bottom 34 of the outer surface and the fingertip is gripped forward. At this time, the rear bottom 34 of the outer cylinder 11 is grasped by the palm. A finger hanging member 37 is attached to the bottom 34 so that the user can securely hold the fingertip and use the fingertip easily.
The finger hooking member 37 is composed of a leg 37a and a disk-shaped flange portion 37b formed integrally with the rear end of the leg 37a. The front end of the leg 37a is fitted and fixed in a concave portion 36 provided at the center of the outer surface of the bottom portion 34. I have. The radial extension of the flange 37b with respect to the leg 37a is equivalent to the thickness of one finger.
a and two fingers can be inserted through the leg 37a between the bottom portion 34 and the bottom portion 34 of the outer cylinder 11. Therefore, for example, as shown in FIG.
, The outer surface of the bottom portion 34 behind the outer cylinder 11 is gripped by the palm. At this time, since the flange portion 37b of the finger hook member 37 is hooked on the back side of both fingers, it is possible to easily hold the entire hair dryer without applying force to other fingers, and the hair dryer slips from the palm during use. Can be more reliably prevented. A slide-type switch knob 6 is provided on the outer surface of the outer cylinder 11 where the fingertip is located. As the switch knob 6 is operated with a fingertip, the power supply to the heater 3 and the blower 5 is controlled. This control unit 7
As shown in FIG. 6, a first switch 12 and a second switch 13 that are switched in accordance with the operation of the switch knob 6 are provided. The first switch 12 has first to third contacts 1
This is a switch that can selectively switch 2a to 12c by a movable contact 12d, and is interposed in a common circuit of the heater 3 and the blower 5. The movable contact 12d is connected to the commercial AC power supply 14 via a power cord 32 described later. The movable contact 12d is connected to the first contact 12a when the switch knob 6 is at the initial position, and is connected to the commercial AC power supply 14d.
When the switch knob 6 is at the second or third stage, the second contact 12b or the third contact 12c is opened.
To close the circuit connected to the commercial AC power supply 14. The second switch 13 has the heater 3 interposed only when the switch knob 6 is operated to the third switching position, that is, when the movable contact 12d of the first switch 12 is connected to the third contact 12c. Close the heater circuit. Therefore,
When the switch knob 6 is operated to the second-stage switching position, cool air is blown out from the outlet 1, and when the switch knob 6 is operated to the third-stage switching position, warm air is blown out from the outlet 1. The operation mode of the switch knob 6 may be a push type instead of a slide type. As a push type, it operates when pressed and returns to the original position when released, or operates when pressed, but does not return to the original position when released, and returns to the original position when pressed again Alternate action type is also available. The power cord 32 is led out from a part of the outer periphery of the rearward flange 27 of the inner cylinder 10, and this lead-out portion is set so as to face the switch knob 6. One end of the power cord 32 is connected to the first switch 12 via the switch knob 6, and the other end is connected to a power plug (not shown). When the switch knob 6 and the lead-out portion of the power cord 32 from the main body case 2 are arranged on the opposite sides of the main body case 2 as described above, the thumb can be applied to the switch knob 6 side. Accordingly, the switching operation of the switch knob 6 can be smoothly performed at any time during use, and the power cord 32 is not positioned outside the hand to be in the way. As shown in FIGS. 1 and 4, an attachment 9 is detachably attached to the outlet 1. As the attachment 9, for example, a large number of bristles 9b are protruded in a circular shape on the outer surface of a disk-shaped base 9a, and a plurality of small air holes 9c penetrating the base 9a are provided at a central portion, and on the inner surface thereof. The step 9d provided can be inserted into and removed from the inner peripheral surface of the outlet 1. In FIG. 1, one or a plurality of protrusions 3 are provided on the front end face of the rearward flange 27 on the outer periphery of the outlet 1 of the inner cylinder 10.
1 is provided so as to protrude forward. As shown in FIG. 5, when the hair dryer is placed on a sink or the like with the outlet 1 facing downward, a gap is formed between the outlet 1 and the upper surface 43 of the sink or the like by the protrusion 31. You. Therefore, even when the hair dryer is temporarily placed on the wash basin or the like as described above when using the hot air, the outside air flows smoothly in the main body case 2, and the temperature in the main body case 2 becomes abnormal. It is possible to prevent the internal components from being exposed to high temperatures without rising. Instead of projecting the projection 31 integrally with the front end face of the rearward flange 27 of the inner cylinder 10, a projection formed separately from an elastic member such as rubber or soft plastic may be attached. In this case, even if the hair dryer is accidentally dropped during use, the projection 31 acts as a cushioning function, and damage around the outlet 1 can be prevented. The small hole 3 is formed in the bottom 34 at the rear of the outer cylinder 11.
4a is provided. The small holes 34a are
Because it communicates with the suction side, it acts as a wind suction port during use and acts as a heat radiating hole immediately after use, but the small hole 34a is not necessarily required. Next, another embodiment will be described. In the above embodiment, the main body case 2 is configured by combining the inner and outer cylinders 10 and 11, but instead, the main body case 2 is formed into a single bottomed cylindrical shape as shown in FIG. In Case 2,
The heater 3, the blower fan 21, and the motor 20 may be housed and arranged in order from the front end outlet 1 side to the rear side. In this case as well, the rear side of the front end of the outer surface of the main body case 2 also serves as a grip for holding with the palm as in the case of the above embodiment, and the outer suction port 4 is provided.
Is provided on the front end side of the main body case 2 and communicates with the suction side of the blower fan 21. Other configurations are substantially the same as those of the above embodiment. FIG. 9 shows still another embodiment, in which the inner cylinder 10 and the outer cylinder 11 constituting the main body case 2 are relatively extended and contracted in the longitudinal direction to increase or decrease the intake amount of the outside air. It is made possible. A locking claw 26a is provided on the peripheral wall 26 of the inner cylinder 10 so as to protrude and retract in the thickness direction from the outer surface thereof,
The locking claws 26 are provided at two places above and below the inner edge 33a of the spacer 33.
There are provided engaging recesses 33b and 33c which are alternatively fitted with a. The hooking claw 26a may be provided integrally with the peripheral wall 26 to impart elasticity to itself in the thickness direction, or may be urged outward from the peripheral wall 26 by a spring. As shown in the figure,
The front end of the outer cylinder 11 is moved to a predetermined position A near the inner bottom of the rearward flange 27 until the hooking claw 26a is fitted into the hooking recess 33b on the rear side.
When it is pushed in, the distance between the front end of the outer cylinder 11 and the inner bottom of the rearward facing flange 27 is reduced. In that case, the amount of outside air introduced from the outside suction port 4 decreases, and the amount of air from the outlet 1 also decreases.
Conversely, the outer cylinder 11 is pulled out until the hooking claw 26a fits into the front side hooking concave portion 33c, and the front end thereof is moved to the rear predetermined position B.
When it moves to the maximum, the distance between the front end of the outer cylinder 11 and the inner bottom of the rearward flange 27 increases. In that case, the amount of outside air introduced from the outside suction port 4 increases, and the amount of air from the outlet 1 also increases.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional side view of a hair dryer. FIG. 2 is a side view showing the hair dryer in a semi-cut state. FIG. 3 is a cross-sectional view of the hair dryer. FIG. 4 is an exploded perspective view of the hair dryer. FIG. 5 shows a state in which a hair dryer is placed on a sink or the like.
It is a side view which shows a part broken. FIG. 6 is a circuit diagram of a hair dryer. FIG. 7 is a perspective view showing a gripping state of the hair dryer. FIG. 8 is a longitudinal side view of a hair dryer showing another embodiment. FIG. 9 is a side view of a partial cross section of a hair dryer showing still another embodiment. [Description of Signs] 1 Air outlet 2 Main body case 3 Heater 4 Outer suction port 5 Blower section 10 Inner cylinder 11 Outer cylinder 21 Blower fan

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-161906 (JP, A) JP-A-4-367609 (JP, A) Jikken Sho 33-5255 (JP, Y1) (58) Field (Int.Cl. ⁷ , DB name) A45D 20/10 A45D 20/48-20/50

Claims (1)

(1) A main body case (2) including a heater (3) and a blower fan (21) is formed in a bottomed cylindrical shape, and blows to a front end opposite to the bottom of the main body case (2). An outlet 1 is provided, and a blower fan 21 is connected to an outer suction port 4 provided in the main body case 2.
The outside air sucked into the main body case 2 is blown out of the air outlet 1 through the heater 3, and the main body case 2 also functions as a grip for gripping with the palm on the rear side from the front end of the outer surface thereof. in hair dryer, said outer suction port 4 Ri Ah provided to the suction side communicates with the blower fan 21 at the front end of the main body casing 2, the outer suction port 4, the reverse direction of the main body casing to the air outlet 1
2. A hair dryer characterized by opening toward the rear side of the hair dryer.