JPS645522Y2 - - Google Patents

Description

[Detailed explanation of the idea] 【Technical field】

The present invention relates to a heater device for generating hot air built into a hair dryer, particularly a thin one.

[Background technology]

In the conventional heater device of this type, as shown in FIGS. 7 and 8, a linear heater body 2 is stretched between a pair of substrates 1 in a zigzag pattern to form a zigzag heater 10'. This zigzag heater 1
0' is mounted on a base 9, a thermo switch 3 and a temperature fuse 5 are mounted on the base 9, and a heater body 2 is mounted on the base 9.
The folded part 4 is arranged parallel to the substrate 1, and the folded part 4 facing the base 9 of the heater body 2 is flush with the folded part 4 of the heater body 2. The dimension δ of the gap is the same for all heater bodies 2 from the first row to the last row. However, in the above conventional method, the folded portions 4 of each row of the heater body 2 face the base 9 uniformly as described above, and the dimensions δ of the gaps between the base 9 and the folded portions 4 are all the same size. In the example, if the dimension of the gap δ between the substrate 1 and the heater body 2 varies in size, all rows of the heater bodies 2 will affect the thermoswitch 3,
As the effects of each part of the heater body 2 overlap, the temperature of the thermoswitch 3 changes greatly, making it extremely difficult to control the hot air temperature using the thermoswitch 3, making it difficult to produce products of constant quality, and making quality control difficult. This was difficult and caused an increase in costs. That is, if the dimension δ of the gap between the substrate 1 and the heater body 2 is set large, the temperature of the thermoswitch 3 will be lowered.
There is a problem that the thermosensing by the thermoswitch 3 becomes slow when there is an abnormality in the hair dryer, resulting in a dangerous situation.On the other hand, if the dimension δ of the gap between the board 1 and the heater body 2 is set small, the temperature of the thermoswitch 3 becomes high. There was a problem that the thermo switch 3 would operate during use, making it extremely difficult to use.

[Purpose of invention]

The present invention was developed in view of the above-mentioned technical background, and its purpose is to ensure that even if the gap size between the base and the zigzag heater varies slightly, it will not affect the operation of the thermoswitch. To provide a heater device for a hair dryer, which can ensure predetermined characteristics of a thermoswitch regardless of variations during assembly, without affecting the quality, and can easily control quality.

[Disclosure of invention]

The hair dryer heater device of the present invention is a hair dryer in which a zigzag-shaped heater 10 in which a heater body 2 is bent in a zigzag manner is disposed on a base 9, and a thermoswitch 3 is disposed on the base 9 at the front in the air blowing direction. The heater device is characterized in that the size of the gap between the folded portion 4 of the zigzag heater 10 on the side facing the base 9 and the base 9 is changed in the air blowing direction, and the zigzag heater 10 Since the gap dimensions between the folded part 4 of the heater 10 and the base 9 are uneven, the thermal influence on the thermoswitch 3 is determined by the part of the folded part 4 of the zigzag heater 10 that is closest to the base 9. Even if the gap size δ between the base 9 and the zigzag heater 10 changes, the effect on the thermoswitch 3 is small. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The zigzag heater 10 is formed by stretching a heater body 2 between a pair of substrates 1. That is, a large number of holes 6 are bored in the insulating substrate 1 in a substantially grid pattern, and the pair of substrates 1 are assembled by the substrate support fittings 7 and are opposed to each other in parallel. The heater body 2 is linear and is passed through a hole 6 in the substrate 1 and stretched between the substrates 1 in a zigzag manner, and a sleeve terminal 8 as shown in FIG. 4 is provided at the end of the heater body 2. This sleeve terminal 8 is fixed to the board 1 by soldering or the like. Note that A is the beginning of winding the heater body 2;
B is the end of the winding of the heater body 2. This zigzag-shaped heater 10 is mounted on a base 9, and a thermoswitch 3 and a temperature fuse 5 are fixed to the front part of the base 9 in the air blowing direction. 5 are connected in series as shown in Fig. 5, and when the hot air temperature becomes too high, the thermo switch 3 opens and the heater body 2 is cut off, so that the hot air temperature is maintained at a predetermined temperature. . In the embodiment shown in FIGS. 1 and 2, the folded portions 4 of the heater body 2 are arranged in nine rows, of which only the first to third rows closest to the thermoswitch 3 are directed toward the base 9. The folded parts 4 in the 4th to 9th rows protrude and are close to the base 9.
relatively far from. Therefore, the hot air hitting the thermo switch 3 only receives heat from the heater bodies 2 in the first to third rows near the base 9, and only receives heat from the remaining four to nine heater bodies 2.
If the temperature of the thermoswitch 3 is adjusted to the heat without receiving heat from the heater bodies 2 in the row, the dimensions of the gaps δ ¹ and δ 2 between the base 9 and the heater bodies ² will vary somewhat. However, since the influence on the thermoswitch 3 is limited to only the heater bodies 2 in the 1st to 3rd rows (because the amount of heat is small), the operating characteristics of the thermoswitch 3 are hardly affected. What is shown in FIG. 6 is another example of the present invention, in which the protruding height of the folded portions 4 of the heater body 2 is gradually changed so that the closer the row is to the thermoswitch 3, the closer the folded portions are to the base 9. The surface in contact with 4 is the base 9
The structure is such that the gap distance between the folded portion 4 and the base 9 gradually changes. In this example, thermo switch 3
The rows of heater bodies 2 that affect the temperature are approximately half of the total, so that even if the distance between the base 9 and the heater bodies 2 changes somewhat, the temperature of the thermoswitch 3 does not fluctuate.

[Effect of the idea]

As described above, the present invention is a hair dryer heater device in which a zigzag-shaped heater with a heater body bent in a zigzag manner is arranged on a base, and a thermoswitch is arranged on the base in the front part in the air blowing direction. A part of the folded part on the side facing the base of the above zigzag heater is made to protrude toward the base side so that the gap between the folded part and the base is minimized. The hot air hits only a part of the folded part on the side facing the base of the zigzag-shaped heater that protrudes so as to minimize the gap between the heater and the base, reducing the amount of heat applied to the thermoswitch. Therefore, even if the dimensions of the gap between the folded part and the base vary slightly due to variations during assembly of the heater device, the amount of heat applied to the thermoswitch will not change significantly, and there will be no thermal effect on the thermoswitch. There is an advantage of being less. Furthermore, since the projected area of the zigzag heater on a plane perpendicular to the blowing direction can be increased, the temperature of the hot air at the discharge port can be made uniform, and there is an advantage that deterioration of the discharge grid due to heat can be prevented.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is a plan view of the same as the above, Figure 3 is an explanatory diagram of the linear heater bent in a zigzag manner as the above, Figure 4 is a perspective view of the sleeve terminal attached to the end of the heater of the same as the above, and Figure 5 is the same as the above. A circuit diagram of the heater device, FIG. 6 is a side view showing another example of the present invention, FIG. 7 is a front view of the conventional example, and FIG. 8 is a side view of the same. 2 is a heater body, 3 is a thermoswitch. , 4 is a folded portion, 9 is a base, and 10 is a zigzag heater.

Claims (1)

[Scope of utility model registration request] In a hair dryer heater device in which a zigzag-shaped heater with a heater body bent in a zigzag manner is arranged on a base, and a thermoswitch is arranged on the base in the front part in the air blowing direction, the base of the zigzag-shaped heater is A heater device for a hair dryer, in which a part of the folded part on the opposing side projects toward the base so that the gap between the folded part and the base is minimized.