JP3767827B2 - Hair dryer - Google Patents

Description

  The present invention relates to a hair dryer provided with a heater for generating hot air.

  With respect to the present invention, it is well known that an insulating frame for supporting a heater is composed of a cylindrical insulating cylinder and a cross-shaped insulating plate projecting around it, and a motor is accommodated inside the insulating cylinder ( Patent Document 1). There, the space inside the case is divided into four air passages by an insulating plate assembled in a cross shape, and a heater is wound around the insulating plate. The insulating cylinder fitted to the motor projects from the front end surface of the motor toward the outlet, and electric parts are arranged using the internal space.

  In a hair dryer equipped with an ion generator, it is known to cut out the central portion of the heater insulation frame assembled in a cross shape to secure a storage space, and to store the transformer and circuit board of the ion generator in this space (See Patent Document 2).

Utility Model Registration No. 2547775 (paragraph number 0012, FIG. 1) Japanese Patent Laying-Open No. 2003-70526 (paragraph number 0023, FIG. 2)

  In the hair dryer disclosed in Patent Document 1, most of the heater faces the passage near the air outlet and is arranged around the insulating plate. Incidentally, the cross-sectional shapes of the four air passages divided by the insulating plates are greatly different between before and after. In the rear fan passage on the peripheral surface of the insulating cylinder adjacent to the fan, the cross-sectional shape is a fan shape, but in the front air passage between the front end of the insulating cylinder and the outlet, the cross-sectional shape is a quadrant. The cross-sectional area suddenly increases. Therefore, in the front air passage, a part of the air flow that has passed through the rear air passage tends to flow toward the center of each air passage, and as described above, the majority of the heater is in the front air passage. Therefore, the air flow flowing through the front air passage is not easily heated by the heater, and the temperature of the warm air blown out from the outlet is likely to be uneven.

  According to the hair dryer of Patent Document 2, since the transformer and circuit board of the ion generator are arranged using the space adjacent to the motor, the hair dryer is enlarged by effectively using the internal space of the main body case. Can be prevented. However, since the transformer and the circuit board are exposed to the air passage divided by the insulating frame for the heater, it is inevitable that the flow of air passing through the air passage is disturbed by the transformer and the circuit board. Variations occur in the temperature of the hot air blown out from each air passage. Since the air flow collides with the insulating plates that intersect each other in the accommodating portion of the transformer and the circuit board, there is a disadvantage that wind noise is likely to occur. Since the insulating plate is positioned at the intersecting portion, the insulating plate may move when it receives a drop impact, for example.

  The object of the present invention is to improve the structure of the air flow passage provided in the main body case and the arrangement structure of the heater, so that the air flow generated by the fan and in contact with the heater is flow-ordered in an orderly manner, and therefore from the air outlet. An object of the present invention is to provide a hair dryer that can eliminate the uneven temperature of the hot air that blows out and that can effectively dry hair and the like.

  An object of the present invention is to form a cylindrical air passage by a cylindrical body and a main body case arranged along the central axis of the ventilation portion of the main body case, and by disposing a heater in the air passage, It is an object of the present invention to provide a hair dryer that can always come into contact with the heater in a stable state, and thus can reliably eliminate uneven temperature of the hot air blown from the outlet.

In the hair dryer of the present invention, a wind-generating part E1 and a ventilation part E2 are provided adjacent to each other inside a cylindrical main body case 1. A fan 13 for blowing air is accommodated in the wind generating portion E1, and a fan driving motor 12, an air heating heater 16, and a heater 16 that are assembled to the motor holder 11 are supported in the ventilation portion E2. Each heater holder 15 is accommodated. The heater holder 15 is a cylindrical body 20 disposed along the central axis of the ventilation portion E2, and is radially engaged with the peripheral surface of the cylindrical body 20, so that the air passage between the cylindrical body 20 and the main body case 1 is provided. The insulating plate 21 divides S in the circumferential direction. A mounting groove 22 is formed on the peripheral surface of the cylindrical body 20 along the central axis, and an insulating plate 21 is inserted and mounted in the mounting groove 22. The heater 16 is wound around the insulating plate 21 so as to face the peripheral surface of the cylindrical body 20.

Specifically, a first claw piece 30 is provided at the front end of the mounting edge 29 of the insulating plate 21 that engages with the mounting groove 22, and the mounting edge 29 of the insulating plate 21 is mounted in the mounting groove 22. The first claw piece 30 is press-fitted into the opening edge of the cylindrical body 20 . Further, a base 70 of the motor holder 11 and the cylinder 20 adjacent to the motor holder 11 are externally fitted to the motor 12 for driving the fan, and the air passage S extends from the rear end to the front end of the cylinder 20. , It is formed in a state that occupies more than a majority of the ventilation portion E2 .

In addition, a second claw piece 31 is provided at the rear end of the mounting edge 29 of the insulating plate 21 that engages with the mounting groove 22, and when the mounting edge 29 of the insulating plate 21 is mounted in the mounting groove 22, The first claw piece 30 is engaged with the opening edge of the cylindrical body 20, and the second claw piece 31 is simultaneously engaged with the claw receiving hole 23 (claim 2 ).

Further, the claw receiving hole 23 projects from the rear end of the mounting groove 22 of the cylindrical body 20 (Claim 3 ).

Further, the cylinder 20 and the motor holder 11 that supports the motor 12 are disposed adjacent to each other, the motor 12 is accommodated in the cylinder 20, and the protruding end of the second claw piece 31 is provided in the motor holder 11. and engaging portions 76 engage the insulating plate 21 and the cylindrical body 20 are non-rotatably fixed to the main body case 1 (claim 4).

In the hair dryer according to the present invention, as shown in FIG. 1, the heater holder 15 is radially attached to and attached to the cylindrical body 20 disposed along the central axis of the ventilation portion E <b> 2 and the peripheral surface of the cylindrical body 20. Therefore, it is possible to form the insulating plate 21 in a lean state as compared to the conventional insulating plates arranged in a crossing manner. A cylindrical air passage S is formed between the main body case 1 and the cylinder 20, the air passage S is divided in the circumferential direction by the insulating plate 21, and the heater 16 faces the peripheral surface of the cylinder 20. Since it is wound around the insulating plate 21 and attached, a stable air flow passing through the air passage S can be heated by contacting the heater 16, and hot air at a constant temperature is always blown out to supply hair, etc. Drying can be performed effectively. Further, the insulating plate 21, by being mounted inclusive and a difference in mounting groove 22 which is made form the peripheral surface of the tubular body 20, can be more firmly attached and fixed to the insulating plate 21 relative to the tubular body 20, For example, when receiving a drop impact, the insulating plate 21 is reliably prevented from coming out of the mounting groove 22 and the reliability of the heater unit is improved .

A first claw piece 30 is provided at the front end of the mounting edge 29 of the insulating plate 21 that engages with the mounting groove 22. When the mounting edge 29 of the insulating plate 21 is mounted on the mounting groove 22, the first claw piece is provided. Since 30 is press-fitted into the opening edge of the cylindrical body 20, the insulating plate 21 can be mounted and fixed to the cylindrical body 20 more firmly. For example, when receiving a drop impact, the insulating plate 21 is mounted. This reliably prevents the groove 22 from coming out and improves the reliability of the heater unit. Further, since the insulating plate 21 can be mounted and fixed to the cylindrical body 20 by being inserted into and engaged with the cylindrical body 20, the insulating plate 21 can be easily assembled with less effort (claim 1 ).

A second claw piece 31 is provided at the rear end of the mounting edge 29 of the insulating plate 21 that engages with the mounting groove 22, and the first edge in the state where the mounting edge 29 of the insulating plate 21 is mounted in the mounting groove 22. The claw piece 30 engages with the opening edge of the cylindrical body 20 and the second claw piece 31 engages with the claw receiving hole 23 at the same time, so that the insulating plate 21 is provided on the peripheral surface of the cylindrical body 20. The first claw piece 30 and the second claw piece 31 provided before and after the mounting edge 29 of the insulating plate 21 are engaged with the opening edge of the cylindrical body 20 and the claw receiving hole 23, respectively. Compared with the case where the insulating plate 21 is fixedly attached and the mounting edge 29 of the insulating plate 21 is simply inserted and engaged with the mounting groove 22, the insulating plate 21 tends to come out of the mounting groove 22. It can be regulated by 30 and 31, and the forward or rearward and radial movement can be regulated. Therefore, the insulating plate 21 can be more firmly attached and fixed to the cylindrical body 20. For example, when receiving a drop impact, the insulating plate 21 is reliably prevented from coming out of the mounting groove 22, and the reliability of the heater unit can be prevented. Improves. Since the insulating plate 21 can be mounted and fixed to the cylindrical body 20 by being inserted into and engaged with the cylindrical body 20, the insulating plate 21 can be easily assembled with less effort (claim 2 ).

The claw receiving hole 23 is formed by projecting from the rear end of the mounting groove 22 of the cylindrical body 20, so that the claw receiving hole 23 can be formed integrally with the cylindrical body 20, and the pointing engagement is ensured ( Claim 3 ).

When the cylindrical body 20 and the motor holder 11 are disposed adjacent to each other and the motor 12 is accommodated inside the cylindrical body 20, the radiant heat of the heater 16 can be blocked by the cylindrical body 20, so that the motor 12 is overheated and rotational efficiency is improved. It can be surely prevented from decreasing. Further, the protruding end of the second pawl piece 31 engages the engaging portion 76 of the motor holder 11, the insulating plate 21 and the cylindrical body 20 is non-rotatably fixed to the main body case 1, utilizing a motor holder 11 Therefore, it is not necessary to provide a rotation prevention structure between the heater holder 15 and the main body case 1, and the structure of the heater holder 15 and the main body case 1 can be simplified correspondingly (claim 4 ).

  1 to 10 show an embodiment of a hair dryer according to the present invention. In FIG. 2, the hair dryer includes a horizontally long main body case 1, a nozzle 2 that is detachably attached to the front end thereof, and a grip 3 that is provided on the rear side of the lower surface of the main body case 1.

A switch knob 4 that can slide up and down is provided on the front surface of the grip 3. By switching the switch knob 4, the air volume and the heater temperature can be controlled, and the energization state of the ion generator can be turned on / off. Inside the grip 3, a switch 5 and the like which are switched by the previous switch knob 4 are accommodated. As shown by the imaginary line in FIG. 2 , the grip 3 is connected to the main body case 1 so as to be foldable about the shaft 8.

  The main body case 1 includes a cylindrical air guide case 1A that occupies most of the main body case 1 and a cylindrical fan case 1B that is press-fitted to the rear end opening of the air guide case 1A. A blow grill 6 is provided at the blow outlet of the front surface of the air guide case 1A, and a suction grill 7 is provided at the suction port on the rear face of the fan case 1B.

  In FIG. 1, a main body case 1 is provided with a wind-up part E1 on the rear side of the case and a ventilation part E2 on the front side thereof adjacent to each other. A fan 13 (to be described later) is accommodated in the wind generating portion E1, and a motor 12, a heater 16, a heater holder 15, and an ion generating device to be described later are accommodated in the ventilation portion E2.

  A blower unit, a heater unit, and an ion generator are disposed inside the main body case 1. The blower unit includes a motor 12 assembled to the motor holder 11 and a fan 13 fixed to the output shaft of the motor 12. After the motor holder 11 is fitted into the air guide case 1A from the rear side, the fan case 1B is press-fitted to the air guide case 1A to be integrated with the main body case 1. In this mounted state, the fan 13 is accommodated in the wind generating portion E1.

3 and 4, the motor holder 11 includes a holder base portion 70 that is externally fitted to the motor 12, a ring portion 71 that is internally fitted to the main body case 1, and six rectifying blades 72 that connect the base portion 70 and the ring portion 71. Is integrally formed with the main body case 1 so as not to rotate relative to the main body case 1. For this purpose, engagement portions 74 that engage with the engagement recesses 73 of the body case 1 are provided at three locations on the peripheral surface of the ring portion 71 (see FIG. 5), and a pair of left and right engagement portions 74 provided on the lower surface are provided. The regulation rib 75 is projected. The leading edge base of each rectifying vanes 72, engaging portions 76 for engaging and holding the second pawl piece 31 to be described later is formed.

  In FIG. 6, the heater unit includes a heater holder 15, a heater 16 wound around the heater holder, a cylindrical insulating cover 17 that covers the outer surfaces of both the heaters 15 and 16, a cylindrical heater cover 18 made of a metal plate, and the like. In one unit part. The heater holder 15 includes a cylindrical body 20 that is externally fitted to the motor 12 adjacent to the front end of the motor holder 11, and six insulating plates 21 that are radially engaged and mounted along the peripheral surface of the cylindrical body 20. Consists of.

  3 and 4, the cylindrical body 20 is formed of a cylindrical plastic molded product having front and rear surfaces opened, and is formed of a plastic material excellent in heat insulation and electrical insulation, for example, polyphenylene sulfide. A mounting groove 22 for mounting the insulating plate 21 protrudes from the front end to the rear end of the peripheral surface of the cylindrical body 20, and a claw receiving hole 23 for engaging and supporting the insulating plate 21 at the rear end of the mounting groove 22. Is projected in a gate shape. A step portion 24 for engaging and supporting the insulating plate 21 is formed in a circular shape on the inner surface of the front end of the cylindrical body 20, and a ring-shaped partition wall 25 bulges in the middle portion of the cylindrical inner surface. (See FIG. 3).

  The insulating plate 21 is formed by forming powdery mica into a plate shape and punching it into a predetermined shape. The insulating plate 21 is formed by notching a latching recess 28 for wrapping the heater 16 around the outer edge. A mounting edge 29 to be inserted and mounted in the mounting groove 22 is provided. Before and after the mounting edge 29, a first claw piece 30 that engages with the stepped portion 24 and a second claw piece 31 that engages with the claw receiving hole 23 are formed. The front and rear length of the insulating plate 21 is formed larger than the front and rear length of the cylindrical body 20. The reason will be described later.

  As shown in FIG. 3, the mounting edge 29 of the insulating plate 21 is inserted into the mounting groove 22 of the cylindrical body 20 from the front end side so that the mounting edge 29 is press-fitted and engaged with the mounting groove 22. The piece 31 can be press-fitted into the claw receiving hole 23, and the first claw piece 30 can be press-fitted into the stepped portion 24. As described above, when the insulating plate 21 assembled to the cylindrical body 20 is engaged and held by the mounting groove 22, the claw receiving hole 23, and the stepped portion 24, the insulating plate 21 can be firmly fixed upright and insulated. The interval between adjacent plates 21 can be made constant. Furthermore, the insulating plate 21 can be easily assembled to the cylindrical body 20 with little effort.

  The front portion of the insulating plate 21 assembled to the cylindrical body 20 protrudes forward from the front end of the cylindrical body 20, and the front end of the insulating plate 21 is in the state of the blowing grill 6 in a state where the heater holder 15 is assembled in the main body case 1. It has reached the vicinity. The second claw piece 31 passes through the claw receiving hole 23 and slightly protrudes from the rear end of the cylindrical body 20.

  Along with the air flow generated by the fan 13, an ion generator is provided inside the main body case 1 in order to blow negative ions onto the hair. In FIG. 7, the ion generator includes a rectifier circuit 33 for half-wave rectifying a current supplied from a commercial power supply (100 V), a pulse generator circuit 34 for converting the rectified current into a pulse current, and a pulse current of 4 kV, for example. A transformer 35 that boosts to a high voltage, an electrode unit 36, a diode 37 provided between the transformer 35 and the electrode unit 36, and the like. The rectifier circuit 33 and the pulse generation circuit 34 are incorporated on the same circuit board to constitute an ion generation circuit 38.

Among the electrical parts described above, the transformer 35, the ion generation circuit 38, and the diode 37 are enclosed in a cylindrical resin mold 39 and configured as one unit part. The front inner space is used to fit into the cylinder 20. When the cylindrical body 20 and the motor holder 11 are disposed adjacent to each other and the motor 12 is accommodated inside the cylindrical body 20, the radiant heat of the heater 16 can be blocked by the cylindrical body 20, so that the motor 12 is overheated and rotational efficiency is improved. It can be surely prevented from decreasing. Further, the protruding end of the second pawl piece 31 engages the engaging portion 76 of the motor holder 11, the insulating plate 21 and the cylindrical body 20 is non-rotatably fixed to the main body case 1, utilizing a motor holder 11 As a result, there is no need to provide an anti-rotation structure between the heater holder 15 and the main body case 1, and the structure of the heater holder 15 and the main body case 1 can be simplified accordingly .

  7 and 8, the electrode unit 36 includes a plastic holder 41, a central electrode (discharge electrode) 42 fixed to the holder 41, and a ring-shaped peripheral electrode (ground electrode) 43 surrounding the central electrode 42. And a dielectric cylinder 44 that insulates and cuts off between the electrodes 42 and 43. The holder 41 is integrally provided with a central boss 45 and a holding ring 46 provided on the outer periphery of the boss 45. The peripheral electrode 43 is fitted and fixed to the outer surface of the boss 45, and the dielectric cylinder 44 is fitted and fixed to the front inner surface of the boss 45 to fix the center electrode 42, the dielectric cylinder 44, and the peripheral electrode 43. The person is arranged concentrically. A number of fan-shaped ventilation holes 47 are formed in the holding ring 46.

  In order to position the electrode unit 36 in the center of the air flow generated by the fan 13, the electrode unit 36 is mounted on the electrode holder 51, and the electrode holder 51 is incorporated in the air guide case 1 </ b> A together with the blowing grill 6. As shown in FIG. 9, the blow-out grill 6 is made of a steel plate press fitting in which a concentric ring frame 6a and a radiating frame 6b are integrally punched, and is entirely plated with chrome. Positioning portions 49 are formed in the left and right sides of the outermost ring frame 6a.

  The electrode holder 51 is a plastic molded product in which a central guard frame 52 and an outer ring frame 53 are connected by six partition walls 54, and a stage for mounting the electrode unit 36 on the inner end of the partition wall 54. A portion 55 is formed. The electrode unit 36 is integrated with the electrode holder 51 by fitting the holding ring 46 into the stepped portion 55 and bonding them together. In this assembled state, the front end of the dielectric cylinder 44 of the electrode unit 36 faces the inner surface of the guard frame 52 of the electrode holder 51 via a small gap. Positioning portions 56 similar to the blow grill 6 are formed on the left and right sides of the ring frame 53, and holding pieces 57 for holding and holding the previous insulating plate 21 on the inner surface side of the ring frame 53 are provided on each insulating plate 21. Projected to correspond to.

  The blowing grill 6 and the electrode holder 51 having the above-described configuration are loaded into the wind guide case 1A, and the positioning portions 49 and 56 provided on the blow grill 6 and the electrode holder 51 are positioned on the front of the inner surface of the wind guide case 1A. By engaging with 50 (see FIG. 9), each of the blowing grill 6 and the electrode holder 51 can be fixed relative to the air guide case 1A so as not to rotate relative thereto.

  According to the ion generator configured as described above, only the negative voltage that has passed through the diode 37 out of the high voltage boosted by the transformer 35 is applied to the central electrode 26, so that the central electrode 26 is directed to the peripheral electrode 27. Electrons are emitted to generate ion wind, and oxygen in the air can be negatively charged to be negatively ionized. Negative ions, which are formed by binding minute water to negatively charged oxygen, can penetrate water deep into the hair, and increase the water content to optimize the hair state even while drying. The produced negative ions are blown forward from the blow grill 6 together with the air passing through the air guide case 1A. Since a part of the air flow described later passes through the ventilation hole 47, negative ions floating around the electrode unit 36 can be forcibly fed.

  When negative ions come into contact with the surface of the blow grill 6 or the electrode holder 51 and are negatively charged, the charged negative charges and negative ions repel each other, so that the amount of negative ions released from the hair dryer decreases. In order to eliminate such negative charge, as shown in FIG. 2, a grounding piece 60 having conductivity is provided on the outer surface of the grip 3, and the blowing grill 6 and the grounding piece 60 are conducted through a conductive path. Thus, the negative charges charged in the blow grill 6 and the electrode holder 51 can be grounded through the ground piece 60 and the human body. It should be noted that negative charges charged on the human body can be released through the floor, walls, and the like.

  The ground piece 60 is made of a leaf-shaped plastic molded product having a long top and bottom, and the entire surface thereof is coated with a plating layer in order to impart conductivity. The ground piece 60 is fixed to a decorative cover 61 that is detachably engaged with the grip 3. The ground piece 60 and the blowout grill 6 are electrically connected via a heater cover 18 that contacts the blowout grill 6 and a lead wire 62 that connects the heater cover 18 and the ground piece 60. For this purpose, as shown in FIG. 8, an L-shaped conductive terminal 63 is provided at the lower edge of the front end of the heater cover 18, and the protruding end of the conductive terminal 63 is brought into close contact with the lower part of the inner surface of the blow grill 6. Connected.

  When the blow-out grill 6 is connected to the ground piece 60 using the heater cover 18, the lead wire 62 can be reduced in length by the amount that it is not necessary to wire the lead wire 62 in the air guide case 1A. Therefore, the labor of assembling a hair dryer can be saved.

  In a state where the ion generator, the heater unit, and the air blowing unit are assembled to the main body case 1, the cylindrical body 20 is supported along the central axis of the ventilation portion E <b> 2, and between the cylindrical body 20 and the main body case 1, Specifically, a cylindrical air passage S is defined between the cylinder 20 and the insulating cover 17.

  The air passage S is formed so as to occupy a majority of the ventilation portion E2 from the rear end to the front end of the cylindrical body 20, and is insulated with most of the heater 16 facing the peripheral surface of the cylindrical body 20. It is wound around the plate 21. That is, the air flow supplied from the fan 13 is guided by flow through the insulating cover 17, the cylindrical body 20, and the insulating plate 21 so that the heating of the air flow by the heater 16 in the blower passage S can be stabilized. . If the insulating plate 21 is provided from the peripheral surface of the cylindrical body 20 to the vicinity of the blowout grill 6 after the blower passage S is provided in a state that occupies most of the longitudinal length of the ventilation portion E2, the length of the blower passage S is long. Only the air flow can be further stabilized. Therefore, the air flow is brought into contact with the heater 16 in a more stable state, so that the temperature unevenness of the hot air blown out from the blowout grill 6 can be more reliably eliminated.

  In the above assembled state, the rectifying blades 72 of the motor holder 11, the insulating plate 21, and the partition wall 54 of the electrode holder 51 are continuous in the front-rear direction to partition the interior of the ventilation portion E2 into six sections. . Therefore, most of the airflow flowing through each section is blown out through the blowing grill 6 and there is no room for flowing into the adjacent section. Thus, in order to guide the air flow supplied from the fan 12 to the vicinity of the blow-out grill 6, the length of the insulating plate 21 is set to be sufficiently larger than the length of the cylindrical body 20.

In the assembled state, the leading edge of the insulating plate 21 is sandwiched and held by the holding piece 57 provided on the electrode holder 51 (see FIGS. 8 and 10). Further, the second pawl piece 31 provided at the rear end of the insulating plate 21 is engaged caught by engaging portions 76 provided on the motor holder 11 (see FIG. 5). Therefore, the heater unit is fixed so as not to rotate relative to the main body case 1. Further, since the front and rear of the insulating plate 21 is tilted non held fixed by the holding pieces 57 and the locking portion 76, even when the receive the drop impact, not the insulating plate 21 moves shift, the insulating plate 21 Adjacent spacing can always be maintained in an appropriate state.

  As shown in FIG. 1, a guide space indicated by a symbol L is secured between the holding ring 46 of the electrode unit 36 and the cylindrical body 20. By providing this guide space L, a part of the air flow flowing through the air passage S is flow-guided to the rear side of the electrode unit 36 and is caused to flow forward from the ventilation hole 47 provided in the holding ring 46. New air can be constantly supplied to the periphery of 36, and negative ions generated by the electrode unit 36 can be blown out from the guard frame 52.

  As described above, the electrode unit 36 is supported by the electrode holder 51 and is positioned at the center of the ventilation portion E2. For this reason, the air flow that has circulated from the air passage S flows evenly into the electrode unit 36, and negative ions floating around the electrode unit 36 are blown out from the guard frame 52. At this time, the air flow containing negative ions is enveloped by the air flow blown straight through the cylindrical air passage S. In other words, it is possible to supply the drying air to a state where the air flow straight through the air passage S forms an air curtain and the air flow containing negative ions is restricted from diffusing. Therefore, the hair can be dried while negative ions are efficiently applied to the hair.

  As shown in FIG. 2, when the hair is dried with the nozzle 2 attached to the outlet of the main body case 1, an air flow containing negative ions is sent toward the inner cylinder 2 a of the nozzle 2. In addition, the air flow that has traveled straight through the air passage S is converged into an elliptical cross section while being accelerated outside the inner cylinder 2a of the nozzle 2, and is accelerated. Therefore, the air flow containing negative ions is fed in a state surrounded by an air flow having a high flow velocity that travels straight out of the inner cylinder 2a. In other words, the air curtain function can be more effectively exhibited by the air flow that is converged and accelerated, so that the air flow including negative ions is surely prevented from diffusing and the amount of negative ions reaching the hair is further increased. Can be increased.

  In addition to the above embodiments, the motor holder 11 and the cylindrical body 20 can be integrally formed. The heater holder 15 can be composed of a cylindrical body 20 and an arbitrary number of four or more insulating plates 21. The insulating plate 21 can be inserted and engaged with the cylindrical body 20 from the rear side toward the front side. The holder 41 and the electrode holder 51 can be integrally formed. The cylindrical body 20 can be extended to the vicinity of the blowing grill 6, and the electrode unit 36 can be accommodated therein. In that case, a hole for introducing new air is formed in the peripheral wall of the cylindrical body 20 so that the new air can be fed to the electrode unit 36.

It is a vertical side view of a main body case. It is a vertical side view of a hair dryer. It is an exploded sectional view of a heater holder and a ventilation unit. It is a disassembled perspective view of a heater holder and a motor holder. It is the sectional view on the AA line in FIG. It is a disassembled sectional view of a heater unit. It is explanatory drawing which shows the outline of an earth structure. It is sectional drawing of an ion generator. It is a disassembled perspective view of an electrode holder and a blowing grill. It is the BB sectional view taken on the line in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body case 6 Outlet grill 11 Motor holder 12 Motor 13 Fan 15 Heater holder 16 Heater 20 Cylindrical body 21 Insulating plate 22 Mounting groove 23 Claw receiving hole 29 Insulating plate mounting edge 30 1st claw piece 31 2nd claw piece 35 Trans | Electrode unit 38 Ion generation circuit 39 Resin mold 51 Electrode holder 57 Holding piece 76 Hooking part E1 Winding part E2 Ventilation part S Airflow path L Guide space

Claims (4)

Inside the cylindrical main body case 1, a wind-up part E1 and a ventilation part E2 are provided adjacent to each other, and a fan 13 for blowing is housed in the wind-up part E1.
The ventilation section E2 accommodates a motor 12 for driving a fan assembled to the motor holder 11 , a heater 16 for heating air, and a heater holder 15 for supporting the heater 16, respectively.
The heater holder 15 is a cylindrical body 20 disposed along the central axis of the ventilation portion E2, and is radially engaged with the peripheral surface of the cylindrical body 20, so that the air passage between the cylindrical body 20 and the main body case 1 is provided. An insulating plate 21 that divides S in the circumferential direction;
A mounting groove 22 is formed on the peripheral surface of the cylindrical body 20 along the central axis, and an insulating plate 21 is inserted and mounted in the mounting groove 22.
A first claw piece 30 is formed at the front end of the mounting edge 29 of the insulating plate 21 that engages with the mounting groove 22.
In a state where the mounting edge 29 of the insulating plate 21 is mounted in the mounting groove 22, the first claw piece 30 is press-fitted into the opening edge of the cylindrical body 20,
The heater 16 is wound around the insulating plate 21 so as to face the peripheral surface of the cylindrical body 20,
The fan driving motor 12 is fitted with a base 70 of the motor holder 11 and a cylindrical body 20 adjacent to the motor holder 11.
The hair dryer which the ventilation path S forms in the state which occupies more than the majority part of the ventilation part E2 from the rear end to the front end of the cylinder 20. A second claw piece 31 is provided at the rear end of the mounting edge 29 of the insulating plate 21 that engages with the mounting groove 22.
In a state where the mounting edge 29 of the insulating plate 21 is mounted in the mounting groove 22, the first claw piece 30 is engaged with the opening edge of the cylindrical body 20, and the second claw piece 31 is simultaneously engaged with the claw receiving hole 23. The hair dryer according to claim 1. The hair dryer according to claim 2, wherein the claw receiving hole is formed to project from the rear end of the mounting groove 22 of the cylindrical body 20. The cylinder 20 and the motor holder 11 that supports the motor 12 are disposed adjacent to each other, and the motor 12 is accommodated in the cylinder 20.
The protruding end of the second claw piece (31) engages with a locking portion (76) provided on the motor holder (11), and the insulating plate (21) and the cylindrical body (20) are fixed to the main body case (1) so as not to rotate. The hair dryer according to any one of 3 above.

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