JPH0115285B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hair dryer.

A conventional example is shown in FIG. A heater frame 4' is formed by combining two flat heater substrates 1' made of insulating material in a cross shape, and grooves 5 cut at appropriate intervals on the side end surfaces of the heater substrates 1' are inserted into the heater frame 4'. A heater body 27' is formed by winding the heater wire 6 around the heater frame 9'. A motor 19 to which a fan 18 is connected is disposed on the side of the heater body 27' in the axial direction. The center of the heater body 27' and the motor 19 are held by rectifying blades 28 provided on the outer periphery of the motor 19, and displacement of the heater board 1' is controlled by a support fitting 29 engaged with the center of the heater frame 4'. I was doing it.
However, there is a problem that the space is large in the axial direction of the heater body 27', and the impact resistance is also weak. In addition, since the heater substrate 1' is combined in a cross shape, the heater substrate 1'
The wind from Fan 18 hits the entire plane of
There was a problem that air loss occurred. In other words,
The air blown from the fan 18 does not travel straight in the axial direction of the fan 18, but is bent in the rotational direction of the fan 18, so that air blowing loss occurs when it hits the plane of the heater board 1'.

The present invention has been provided in view of the above-mentioned points, and an object of the present invention is to provide a hair dryer that is smaller and more compact and has less air loss.

Embodiments of the present invention will be described in detail below with reference to the drawings. In the figure, reference numeral 1 denotes an elongated and flat heater board made of an insulating material. Both ends of the heater board 1 are formed wide for fixing, and grooves are formed on both end faces for positioning and fixing the heater wire 6. 5 are removed in large numbers at appropriate intervals. Alternatively, a large number of ribs may be provided protrudingly, and grooves may be formed between the ribs. Reference numerals 2 and 3 denote ring-shaped support frames made of metal that support and fix the heater board 1. At the center of these support frames 2 and 3, there are four bridging pieces 12 extending from the outer frame toward the center. A cylindrical tube portion 11 extending in the same direction as the axial direction of the support frames 2 and 3 is integrally formed therebetween. The outer diameter of one support frame 2 is smaller than the outer diameter of the other support frame 3, and the cylindrical portions 11 are formed to have the same size. Furthermore, the board support piece 7 is attached from the outer frame of the support frames 2 and 3.
is integrally protruded toward the center. The protruding position of the board support piece 7 is approximately the middle position between each of the bridging pieces 12, 12, and the surface of the board support piece 7 is formed in a direction perpendicular to the radial direction of the support frames 2, 3. ing. In addition, each board support piece 7 of the support frame 2...
The position in the radial direction is located closer to the center than the position of the substrate support piece 7 of the other support frame 3. When both the support frames 2 and 3 are arranged in parallel, both the board support piece 7 and the cylindrical part 11 are formed so as to protrude inwardly and face each other, as shown in FIG.
The heater board 1 is attached to both board support pieces 7 of both support frames 2 and 3.
The ends of the heater substrate 1 and the substrate support piece 7 are fixed with eyelets. The heater substrate 1 is thus fixed to each substrate support piece 7 to form the heater frame 4. At this time, since the positions of the support frames 2 and 3 with respect to the center direction of the substrate support piece 7 are different, the heater substrate 1 has a slope that is inclined toward the center side of the support frame 2. Further, the plane of the heater board 1 is arranged to face the center of the support frames 2 and 3, and the heater board 1 is arranged so as to face the center of the support frames 2 and 3.
It will be arranged and fixed in an annular shape along the outer frame of the. A fixing piece 10 for fixing the thermoswitch 9 is integrally formed closer to the center of one of the support frames 2 than the outer frame. Lead wire support pieces 8 protruding toward the support frame 2 from both sides of the bridging piece 12 of the other support frame 3 are integrally formed. This lead wire support piece 8 is used to gather the lead wires 13 from the thermoswitch 9 so that they do not come apart and do not block the wind when blowing air. Next, a single wire heater wire 6 is wound around the heater frame 4. At this time, the heater wire 6
is inserted into the groove 5 of each heater board 1 and wound while maintaining an appropriate interval. This state is shown by the solid line in FIG.
It is only positioned via the next,
The heater wire 6 wound around the heater frame 4 and between the heater substrate 1 is pressed in the direction of the arrow in FIG.
As shown by the two-dot solid line in the figure, the heater wire 6 is pressed into the groove 5, and the heater wire 6 is annealed so that the heater wire 6 on the heater board 1 is raised in a substantially semicircular shape. Connect wire 6 to heater board 1
Press and fix into the groove 5 of. Therefore, since the heater wire 6 is lifted from the heater substrate 1, it is possible to prevent the heater wire 6 from becoming red hot, and by annealing and forming the heater wire 6 after post-processing, the heating wire 6 is prevented from floating. It is possible to prevent displacement and improve strength. In this way, the heater wire 6 is wound around the outer periphery of the heater frame 4 to form the heater body 27. As shown in FIG. 4, the heater wire 6 wound around the heater frame 4 has a tapered shape because the heater substrate 1 has an inclination. Heater wire 6 from the side of
As can be seen, the heater wire 6 has a ring shape with a certain width. Therefore, by blowing air from the side of the support frame 3, the entire heater wire 6 is evenly hit by the air, and a wide range of hot air can be uniformly blown. This prevents the heating wire 6 from becoming red hot and provides a good wind tunnel for rectifying the wind temperature and wind speed. As shown in FIGS. 5 and 7, the motor 19 is disposed in the heater main body 27, and the heater main body 2
A fan 18 is connected to the shaft of a motor 19. Reference numeral 20 denotes a motor cup having a cylindrical shape with a bottom and made of an insulating material.
The end of the motor 19 opposite to the side to which the fan 18 is attached is fitted, and is fitted into the cylindrical part 11 of one support frame 2 so that the inner peripheral surface of the cylindrical part 11 and the motor cup 20 are fitted. It is frictionally engaged with the outer circumferential surface of and is rotatable. A plurality of protrusions 31 are protruded from the outer peripheral surface of the end of the motor 19, and recesses 30 that engage with the protrusions 31 are cut into the motor cup 20 as shown in FIG. 6a. ing. 21 is Juan 1
The end of the motor 19 on the 8 side is covered with a hold cap made of a molded insulating material, and this hold cap 21 is fitted into the cylindrical portion 11 of the other support frame 3. Therefore, both ends of the motor 19 are supported by a motor cup 20 and a hold cap 21, and these are fitted into the cylindrical portions 11 of both support frames 2 and 3 and supported at the center of the heater body 27 in the axial direction. Fixed. Therefore, the motor cup 20 and the hold cap 21 can insulate the heater wire 6 and the motor 19, and can also eliminate chattering and whining noises caused by the vibrations and noise of the motor 19. Further, the motor 19 is held and fixed by the ring-shaped metal support frames 2 and 3, which increases the strength of the motor 19 in terms of resistance to center deviation and impact, and furthermore, it can be assembled in a small space. The cylindrical portion 11 of the support frame 3 and the hold cap 21 are fixed as shown in FIG. 6b. That is, an engaging protrusion 33 is provided on the outer circumferential surface of the hold cap 21, and a recess 3 that engages with the protrusion 33 is provided.
2 is formed on the cylindrical portion 11 of the support frame 3. The engagement between the protrusion 33 and the recess 32 fixes the motor 19 and the support frame 3 both around and in the axial direction of the motor 19 . The recess 30 of the motor cup 20 is located at the end of the motor 19 on the wind discharge side.
The support frame 2 is formed slightly longer around the axis of the support frame 2.
is fixed to the motor 19 in the axial direction and is rotatable around the axis. In this way the motor 19
By fixing the sides and leaving the support frame 2 free around the axis, even if the heater board 1 is misaligned or screwed during assembly, the twist can be absorbed by rotating the support frame 2 to correct it. The support frame 2 is not subjected to excessive weight. Also motor 1
The heater body 27 to which the heater body 9 is fixed is held and fixed within the housing 15 using a surrounding frame 22, and by engaging the outer periphery of the support frame 2 with this surrounding frame 22, the strength is further improved. be able to. Further, since the inner peripheral surface of the cylindrical portion 11 of the support frame 2 and the outer peripheral surface of the motor cup 20 are in frictional engagement with each other as a whole, the support frame 2 does not easily rotate relative to the motor 19. . In this way motor 1
9 is fixed to the central part of the heater body 27 in the axial direction, and the fan 18 is arranged on the side of the heater body 27 in the axial direction. A rectifier block 25 is arranged between the inner surface of the motor cup 20 and the end of the motor 19, and the lead wires from the rectifier block 25 and the lead wires 13 of the thermoswitch 9 are connected to the lead wires of the support frame 3 shown in FIG. 6c. It is supported and fixed to the support piece 8. And the lead wire 13 is a switch 23 for operation.
The other end of the switch 23 is connected to a power cord 24. 26 is a rubber bushing, and 17 is a discharge port. Since a lead wire support piece is formed on the support frame 3, the motor 1
The lead wires 13 of the thermo switch 9 and the thermo switch 9 can be stored in one place, improving the air blowing efficiency, and the lead wires 13 do not come apart, making it easy to assemble. Note that 16 is a suction port.

As described above, the present invention arranges a plurality of plate-shaped heater substrates in a ring shape, and arranges the planes of the heater substrates toward the center of the ring, and both ends of the plurality of heater substrates are integrally connected and fixed by a pair of ring-shaped support frames to form a heater frame, and a heater wire is wound around the outer peripheral surface of the heater frame via a heater board, and a fan for blowing air is connected. Both ends of the motor are fitted into the center of both support frames, which eliminates the conventional arrangement of the motor on the side in the axial direction of the heater body, in which the heater wire is wound around the heater frame. Compared to the example, since the motor is housed inside the heater body, the axial length of the heater body can be reduced by the length of the motor, which has the effect of making the hair dryer more compact. Also, since the air blown from the fan does not travel straight in the axial direction of the fan, but is bent in the direction of rotation of the fan, the plane of the heater board is directed toward the center of the ring arranged in an annular shape. If the fan is not oriented in the same direction as the ring or toward the center of the ring, the air from the fan will collide with the plane of the heater board, which has a large area, resulting in large air loss. By arranging the heater substrates in a ring shape and arranging the planes of the heater substrates toward the center of the ring, the wind from the fan has less collision with the planes of the heater substrates, which have a large area, and the air flow is This has the effect of reducing loss.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional example, FIG. 2 is an exploded perspective view of a heater frame according to an embodiment of the present invention, FIG. FIG. 4 is a perspective view of the heater main body, FIG. 5 is a sectional view of the same as above, FIG. 7 is an enlarged sectional view showing the engagement state between the cylindrical portion of the other support frame and the hold cap, FIG.
The figure is a cross-sectional view of the same hair dryer as above, where 1 is a heater board, 2 and 3 are support frames, 4 is a heater frame, and 5
1 is a groove, 6 is a heater wire, 7 is a substrate support piece, 8 is a lead wire support piece, 11 is a cylinder part, 12 is a bridge piece, 13 is a lead wire, 18 is a fan, 19 is a motor, and 20 is a motor cup. .

Claims (1)

[Claims] 1. A plurality of plate-shaped heater substrates are arranged in a ring shape, and the flat surfaces of the heater substrates are directed toward the center of the ring, and both ends of the plurality of heater substrates are arranged in a ring shape. A pair of ring-shaped support frames are connected and fixed together to form a heater frame, and a heater wire is wound around the outer circumferential surface of the heater frame via a heater board, and a fan for blowing air is connected. A hair dryer with both ends of the motor fitted into the center of both support frames. 2 Attach one end of the heater board on the air outlet side to the center of one support frame, and attach the other end of the heater board to the outer circumferential side of the other support frame, so that the heater board is aligned with respect to the air blowing direction. The hair dryer according to claim 1, characterized in that the hair dryer is inclined. 3 A plurality of bridging pieces are formed extending inward from the outer frame of the support frame, and are connected to the bridging pieces to fit the end of the motor, and are arranged in the same direction as the axial direction of the support frame. A board support piece is formed that extends inward from the outer frame of the support frame to fix the end of the heater board, and lead wires for wiring are installed at key points of the bridge piece. 2. The hair dryer according to claim 1, further comprising a protruding lead wire support piece for holding the lead wire. 4. A motor cup is fitted onto the outer peripheral surface of the end of the motor, the motor cup being press-contacted to the inner surface of the cylindrical portion of one of the pair of support frames and rotatably and friction-locked. A hair dryer according to claim 1.