WO2012127813A1

WO2012127813A1 - Iron

Info

Publication number: WO2012127813A1
Application number: PCT/JP2012/001720
Authority: WO
Inventors: 大塚　康晴; 下坂　喜一
Original assignee: パナソニック株式会社
Priority date: 2011-03-24
Filing date: 2012-03-13
Publication date: 2012-09-27
Also published as: JP5974274B2; TW201245537A; US20130327759A1; CN103380244A; CN105568652A; CN105568652B; EP2690215A1; RU2013136044A; JP2012210401A; EP2690215B1; CN103380244B; EP2690215A4

Abstract

This iron is equipped with an overheating prevention device (109) connected in series with the heater circuit, and an overheating prevention device fastener (110) for installing the overheating prevention device (109) on the base. The base is capable of being heated by heaters of differing capacities. The iron is configured so that overheating prevention devices (109) of differing heater circuit-cutoff temperatures are selectively installed on the overheating prevention device fastener according to the heater capacity.

Description

Iron

The present invention relates to an iron that performs wrinkle stretching of clothes and the like.

Traditionally, this type of iron is provided with a thermal fuse, and when the base heated by the heater rises above the normal temperature, the thermal fuse is activated (the eutectic alloy melts) to prevent thermal damage is doing. The surface of the thermal fuse is a live part. In order to make the surface of the thermal fuse have an electrically insulating configuration, a space distance is provided between the base and the heating unit. In addition, the surface of the thermal fuse is in contact with the surface of the base via an electrical insulator (see, for example, Patent Document 1).

温度 Thermal fuses are generally inexpensive, but their usable temperature is relatively low (generally around 226 ° C). When the thermal fuse is used in a device that is heated to a high temperature such as an iron, it is necessary to adjust the heat-sensitive characteristics after having an electrically insulating configuration.

On the other hand, as an overheat prevention device having a relatively high usable temperature (generally about 270 ° C.), a bimetal overheat prevention device is considered (for example, see Patent Document 2). FIG. 9 is a top view of a main part of a conventional iron. FIG. 10 is a cross-sectional view of a conventional iron overheat protector. In the iron described in Patent Document 2, as shown in FIGS. 9 and 10, an overheat protector 153 is connected in series with the circuit of the heater 152 embedded in the base 151. The overheat prevention device 153 is covered with a bottom cover 154 formed of a metal member having good thermal conductivity such as aluminum to form a heat sensitive portion. Above the bottom cover 154, a reversible bimetal 155, an insulator 156, and a conductive metal portion 158 having a spring property with a contact 157 installed at the tip thereof are provided.

When the overheat prevention device 153 reaches a predetermined temperature, the reversing bimetal 155 is reversed upward, and the reversing bimetal 155 pushes up the conductive metal portion 158 through the insulator 156. As a result, the contact 157 provided at the tip of the conductive metal portion 158 is opened, and the circuit of the heater 152 is interrupted. The overtemperature prevention device 153 is held by the wiring board 160 made of an electrical insulator by a conductive metal member 159. When the wiring board 160 is fixed to the base 151 with a fastening part such as a screw, the overheat prevention device 153 is also fixed to the base 151. At this time, the overheat prevention device 153 is configured to abut or press against the upper surface of the base 151. For this reason, the temperature of the base 151 is reliably transmitted to the overheat prevention device 153. As a result, the overtemperature protector 153 has improved thermal response and less variation in operating temperature.

However, the conventional configuration has a problem that the heater circuit cannot be accurately cut off by the overheat prevention device if the capacity of the heater embedded in the base is different. Generally, the iron base is made of aluminum die casting. For this reason, the heat conduction to the base is improved by embedding the heater when the base is molded, and the base can be effectively heated. The capacity of the heater used for the iron is generally 600 W to 1 kW. When the base is heated to a set temperature in a shorter time or when the amount of steam generated is increased, a large amount of heat is consumed to instantly vaporize water. Therefore, in order to maintain the vaporization chamber at a proper vaporization temperature, for example, a high capacity heater of 2 kW is also used.

In the case of a base heated by a high-capacity heater, the temperature controller is cooled by the generation of a large amount of steam, and the heater energization time becomes longer. For this reason, the part which is not cooled by vaporization is overheated, the temperature difference with the part cooled is expanded, and a big bias | deviation arises in the temperature of a base. Therefore, in the case of a thermal fuse having a low operating temperature, a situation occurs in which the rated operating temperature of the thermal fuse is reached in a normal use state due to partial overheating of the base. As a result, the heater circuit is inadvertently cut off.

JP 59-46999 A JP-A-9-192400

The iron of the present invention includes a base heated by a heater, a vaporization chamber formed in the base, a steam ejection hole for ejecting steam generated in the vaporization chamber, a temperature controller for adjusting the base to a predetermined temperature, and a heater And an overtemperature prevention device connected in series to the circuit and an overtemperature prevention device fixing portion for attaching the overtemperature prevention device to the base. The base is provided so that it can be heated by heaters having different capacities. The overheat prevention device having different operating temperatures for interrupting the heater circuit is configured to be selectively attached to the fixing portion for the overheat prevention device according to the capacity of the heater.

This ensures that even when the base is heated by a high capacity heater, the overheat prevention device does not reach its rated operating temperature in normal use due to overheating. For this reason, the malfunction that the circuit of a heater is interrupted | blocked during use can be prevented. Further, when the base is heated by a normal capacity heater, it is possible to attach an overheat prevention device having a different configuration to the base formed in the same shape. As a result, it is possible to realize both the prevention of the above problems and the ease of manufacturing.

FIG. 1 is a top view of the base of the iron according to Embodiment 1 of the present invention. FIG. 2 is a top view of the overheat prevention device attached to the base of the iron according to the first embodiment of the present invention. FIG. 3 is a top view in which a thermal fuse is attached to the base of the iron according to the first embodiment of the present invention. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG. 7 is a cross-sectional view taken along the line 7-7 in FIG. 8 is a cross-sectional view taken along the line 8-8 in FIG. FIG. 9 is a top view of a main part of a conventional iron. FIG. 10 is a cross-sectional view of a conventional iron overheat prevention device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a top view of the base of the iron according to Embodiment 1 of the present invention. FIG. 2 is a top view in which an overheat prevention device is attached to the base of the iron according to the first embodiment of the present invention. FIG. 3 is a top view in which a thermal fuse is attached to the base of the iron according to the first embodiment of the present invention. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG. 7 is a cross-sectional view taken along the line 7-7 in FIG. 8 is a cross-sectional view taken along the line 8-8 in FIG.

1 to 8, the base 101 is made of an aluminum alloy or the like by die casting. The base 101 is heated by a heater 102 embedded at the time of molding. The heater 102 is a sheathed heater bent in a substantially U shape. A surface member 101 a is attached to the lower surface side of the base 101. A front end portion 101b and a rear end portion 101c are formed in a pointed shape having substantially the same angle at the front end portion and the rear end portion of the hooking surface member 101a. Thereby, the user can perform forward movement and backward movement during ironing without changing the iron.

End portions

102 a and 102 b of the heater 102 formed in a substantially U shape are exposed on the upper surface side of the rear end portion 101 c side of the base 101.

The base 101 is formed with a vaporization chamber 103 on the upper surface side for vaporizing water supplied from a water tank (not shown) to generate steam. The vaporization chamber 103 is disposed on the inner side surrounded by the heater 102 embedded in the base 101. The steam generated in the vaporizing chamber 103 is ejected from a number of steam ejection holes 105 provided in the hanging surface member 101a through the steam passage 104a.

Steam supplied from the front portion 103a of the vaporizing chamber 103 and vaporized flows in the direction of arrow A toward the rear end portion 101c of the base 101. The steam passes through the steam passage 104 a formed on the upper surface side of the base 101, passes through the communication portion 106 a provided outside the heater 102 embedded in the base 101, and passes through the steam passage 104 b formed on the lower surface side of the base 101. Then, it reaches the steam ejection hole 105.

The steam passage 104b is formed in an elliptical shape so that the front portion and the rear portion are connected on the upper surface side of the hooking surface member 101a. In the steam passage 104a, an extending portion 104c is formed from the

end portions

102a and 102b of the heater 102 to the rear end portion 101c side of the base 101. The extending portion 104 c is formed on both the upper surface side and the lower surface side of the base 101.

The temperature controller 107 senses the temperature of the base 101 heated by the heater 102 and adjusts the base 101 to a predetermined temperature. The temperature controller 107 is connected in series to the circuit of the heater 102, and adjusts the temperature to a temperature set by the user by turning the heater 102 on and off. The temperature controller 107 is fixed to a temperature controller fixing portion 108 formed on the base 101.

When the temperature of the base 101 heated by the heater 102 rises beyond the normally used temperature range, the overheat prevention device 109 cuts off the circuit of the heater 102 and prevents thermal damage to the base 101. . The overtemperature prevention device 109 is fixed to the overtemperature prevention device fixing portion 110 formed on the base 101.

The base 101 is provided so that it can be heated by a heater 102 (for example, 600 W to 1 kW that is generally used, or 2 kW that is used when a large amount of steam is generated). The iron base 101 is manufactured to a desired heater capacity in the same shape with a common mold by embedding one heater 102 selected from heaters having different capacities formed in the same shape at the time of molding. The

As the overheat prevention device 109, a device having a different operating temperature for cutting off the circuit of the heater 102 is selected according to the capacity of the heater 102 embedded in the base 101. The overheat prevention device 109 is fixed to the fixing portion 110 for the overtemperature prevention device. The overheat prevention device 109 is selected from either the thermal fuse 109a or the bimetal overheat prevention device 109b.

In the thermal fuse 109a, the eutectic alloy melts to interrupt the circuit. The thermal fuse 109a has a low operating temperature but is inexpensive. On the other hand, the bimetal overheat prevention device 109b has a high operating temperature but is more expensive than the thermal fuse 109a. Depending on the capacity of the heater 102 embedded in the base 101, any overheat prevention device 109 can be attached to the overheat prevention device fixing portion 110 formed on the base 101.

The thermal fuse 109a is disposed in a heat-resistant electrical insulator 111 formed in a cylindrical shape by, for example, ceramic. The thermal fuse 109a is supported from below by a heat transfer body 112 with good thermal conductivity, one end of which is fixed to the fixing portion 110 for an overheat prevention device. The heat transfer body 112 is formed of, for example, a highly heat conductive metal such as aluminum. In the heat transfer body 112, an electric insulator 111 having a thermal fuse 109a is sandwiched from outside by a holding portion 112a. Thereby, the heat of the base 101 is transmitted to the thermal fuse 109a through the heat transfer body 112. The heat transfer body 112 is fixed to the fixing portion 110 for an overtemperature prevention device with a screw 112b or the like.

When the bimetal-type overheat prevention device 109b reaches a predetermined temperature, the inversion-type bimetal is inverted upward, and pushes up the conductive metal portion through the insulator. Thereby, the contact installed at the tip of the conductive metal part is opened, and the circuit of the heater 102 is cut off. Therefore, the operating temperature of the bimetal overheat prevention device 109b is high (generally about 270 ° C.). Since the specific configuration of the bimetal-type overheat prevention device 109b is the same as the configuration shown in FIG. 10, the detailed description thereof uses the description of FIG.

The overheating prevention device fixing portion 110 for fixing the overtemperature prevention device 109 and the temperature regulator fixing portion 108 for fixing the temperature controller 107 are generated in the vaporization chamber 103 in which steam is generated and the vaporization chamber 103. Steam is provided along the flow path of the steam flowing toward the steam ejection hole 105. The temperature controller fixing portion 108 is disposed on the downstream side of the steam flow path with respect to the overheat prevention device fixing portion 110. The temperature controller fixing portion 108 and the overheat prevention device fixing portion 110 are adjacent to each other and are continuously formed on the base 101 at substantially the same height.

Further, the temperature controller fixing portion 108 is surrounded by the vaporizing chamber 103 and a steam passage 104a through which steam flows from the vaporizing chamber 103 toward the steam ejection hole 105, so that heat is easily taken away.

The second vaporization chamber 113 formed on the base 101 adjacent to the vaporization chamber 103 generates an increased amount of steam in addition to the normal steam generated in the vaporization chamber 103. The second vaporization chamber 113 can generate increased steam by temporarily supplying a large amount of water from a water tank (not shown) by a pump device (not shown) or the like.

The increased steam generated in the second vaporization chamber 113 passes from the steam passage 104d formed on the upper surface side of the base 101, through the communication portion 106b provided outside the heater 102 embedded in the base 101, and on the lower surface side of the base 101. The steam passage 104b is formed to reach the steam ejection hole 105. The overheat prevention device fixing portion 110 is also adjacent to the second vaporization chamber 113 and the steam passage 104d. The fixing portion 110 for the overheat prevention device is deprived of heat by the increased amount of steam temporarily generated.

The vaporization chamber 103 formed on the upper surface side of the base 101, the steam passage 104a, the extending portion 104c formed on the upper surface side of the base 101, the steam passage 104d, and the second vaporization chamber 113 are covered from the upper surface side of the base 101. It is defined by being covered by a body 114. A temperature controller 107 and an overtemperature prevention device 109 attached to the base 101 are disposed above the lid body 114.

The temperature controller 107 and the overheat prevention device 109 are connected in series with the heater 102 by a conductive metal body 115. One end portion 102a of the heater 102 and one end of the overheat prevention device 109 (109a, 109b) are connected by a first conductive metal body 115a. The other end of the overheat prevention device 109 (109a, 109b) and one end of the temperature regulator 107 are connected by a second conductive metal body 115b. The other end of the third conductive metal body 115 c connected to the other end of the temperature controller 107 extends backward to the vicinity of the other end portion 102 b of the heater 102. The fourth conductive metal body 115d is connected to the other end 102b of the heater 102, and a power cord (not shown) is connected to the third conductive metal body 115c and the fourth conductive metal body 115d. .

The configuration of the conductive metal body 115 (115a to 115d) is the same when the thermal fuse 109a is connected as the overheat prevention device 109 and when the bimetal overheat prevention device 109b is connected. In any case, the first conductive metal body 115a to the fourth conductive metal body 115d are used.

The operation and action of the iron configured as described above will be described below. In the base 101, one heater 102 is selected from heaters having different capacities formed in the same shape, and is embedded when the base 101 is molded. As a result, the base 101 in which the heaters 102 having different capacities are embedded is formed in the same shape. When a high-capacity (for example, 2 kW) heater 102 is embedded in the base 101, the base 101 is heated by the high-capacity heater 102, and the temperature of the base 101 can be quickly raised to a set temperature in a short time. In addition, even when the amount of steam generated is increased during ironing to increase the wrinkle stretching effect, the temperature of the vaporizing chamber 103 can be maintained at an appropriate vaporization temperature.

When normal steam is generated and used, the temperature deviation of the base 101 is small, but a large amount of water is supplied to the second vaporization chamber 113 by a pump device or the like, and the amount of generated steam is increased. When used in the above, the temperature in the vicinity of the second vaporization chamber 113 decreases. The temperature controller fixing portion 108 to which the temperature controller 107 is fixed is adjacent to the second vaporization chamber 113 and the steam passage 104 d through which steam generated in the second vaporization chamber 113 flows toward the steam ejection hole 105. Is provided. Thereby, since the temperature controller fixing portion 108 is cooled, the temperature controller 107 can accurately detect the temperature decrease in the vicinity of the second vaporization chamber 113.

The temperature controller 107 extends the energization time of the heater 102 so as to maintain the vicinity of the second vaporization chamber 113 at the proper vaporization temperature when the temperature in the vicinity of the second vaporization chamber 113 decreases. However, when the base 101 is heated by the high-capacity heater 102, a portion of the base 101 that is not cooled by vaporization is overheated, and the temperature difference from the portion that is cooled by vaporization increases, and the temperature of the base 101 increases. In addition, a large bias occurs depending on the location. Even in such a case, since the overheat prevention device fixing portion 110 is adjacent to the second vaporization chamber 113 and the steam passage 104d, the overtemperature prevention device fixing portion 110 can be effectively cooled. . Further, if the bimetal type overheat prevention device 109b having a high operating temperature is selected as the overheat prevention device 109, the overheat prevention device 109 does not reach its rated operation temperature, and the heater 102 is in use. It is possible to prevent a problem that the circuit is interrupted.

Further, when a heater 102 having a general capacity (for example, 1 kW) is embedded in the base 101, the base 101 is made in the same shape, so that the operating temperature is low according to the capacity of the heater 102 and is inexpensive. A thermal fuse 109a which is a simple overheat prevention device can be attached to the same overheat prevention device fixing part 110.

As described above, the iron according to the present embodiment is based on the overtemperature prevention device 109 (109a, 109b) and the overtemperature prevention device 109 (109a, 109b) connected in series with the circuit of the heater 102 as the base 101. An overheating preventing device fixing portion 110 to be attached is provided. The base 101 is provided so that it can be heated by the heaters 102 having different capacities. Further, an overheat prevention device 109 (109a, 109b) having different operating temperatures for interrupting the circuit of the heater 102 is selectively attached to the overheat prevention device fixing portion 110 according to the capacity of the heater 102. As a result, it is possible to prevent a problem that the circuit of the heater 102 is cut off during use due to overheating when heated by the high-capacity heater 102. Further, the overheat prevention device 109 (109a, 109b) having a different configuration can be reasonably and easily attached, and the overheat prevention device 109 (109a, 109b) reaches the rated operating temperature and is heated. It is possible to achieve both the elimination of the problem that the circuit is interrupted and the ease of manufacturing.

Further, the iron of the present embodiment has an extending portion 104 c formed on the rear end portion 101 c side of the base 101. By forming the extended portions 104c on the upper surface side and the lower surface side of the base 101, overheating of the rear end portion 101c can be prevented. In general, the vaporizing chamber 103 is disposed at the front portion of the base 101, and the temperature of the base 101 is lowered by the generation of steam. On the other hand, the temperature of the rear portion of the base 101 is small due to the occurrence of steam, and the temperature rises due to energization of the heater 102. By forming the extending portion 104c from the

end portions

102a and 102b of the heater 102 to the rear end portion 101c side of the base 101, the temperature rise at the rear portion of the base 101 can be suppressed by steam, The overheating of the rear end portion 101c can be efficiently prevented from both the lower surface side. Further, by forming the rear end portion 101c of the base 101 in the same sharp shape as the front end portion 101b, it is possible to prevent an erroneous operation of wrinkling with the iron when the iron is retracted. As a result, a user-friendly iron can be configured.

The steam flow path is a path from the steam generated in the vaporization chamber 103 to the steam ejection hole 105. The temperature controller fixing portion 108 and the overheat prevention device fixing portion 110 are configured to be surrounded by the vaporization chamber 103, the

steam passages

104a and 104d, the second vaporization chamber 113, and the like. Thereby, a decrease in the temperature of the base 101 can be accurately sensed according to the occurrence of steam.

As described above, the iron of the present invention adjusts the base to a predetermined temperature, the base heated by the heater, the vaporization chamber formed in the base, the steam ejection holes for ejecting steam generated in the vaporization chamber, and the base. A temperature controller, an overtemperature prevention device connected in series with a heater circuit, and an overtemperature prevention device fixing portion for attaching the overtemperature prevention device to a base. The base is provided so that it can be heated by heaters having different capacities. The overheat prevention device having different operating temperatures for interrupting the heater circuit is configured to be selectively attached to the fixing portion for the overheat prevention device according to the capacity of the heater.

Therefore, even when the base is heated by a high-capacity heater, the overheat prevention device does not reach its rated operating temperature in normal use due to overheating. For this reason, the malfunction that the circuit of a heater is interrupted | blocked during use can be prevented. In addition, when the base is heated by a normal capacity heater, it is possible to attach an overheat prevention device having a different configuration to the base formed in the same shape. For this reason, an iron can be manufactured rationally and easily.

Further, in the iron of the present invention, an adhering portion for an overheat prevention device and an adhering portion for the temperature controller adhering to the steam flow path adjacent to the steam flow path where the steam generated in the vaporizing chamber flows toward the steam ejection hole. Provide a part. The fixing portion for the temperature controller is provided on the downstream side of the steam passage with respect to the fixing portion for the overheat prevention device. Thereby, the temperature rise of the base for temperature rise prevention device can be suppressed by the temperature drop of the base due to the generation of steam in the vaporization chamber, and overheating can be prevented in balance with the heating by the heater.

Further, in the iron of the present invention, the fixing portion for the overheat prevention device and the fixing portion for the temperature regulator are formed close to each other, and the fixing portion for the overheating prevention device and the fixing portion for the temperature regulator are connected in series. As a result, the heat sensitive temperatures of the overheat prevention device and the temperature controller can be brought close to each other, and each can be operated optimally and accurately.

Further, in the iron of the present invention, the temperature controller fixing portion is surrounded by a steam flow path through which steam flows from the vaporization chamber toward the steam ejection hole. Thereby, heat can be efficiently taken from the fixing portion for the temperature controller by the steam flowing through the steam passage. Thereby, the energization time to the heater can be accurately controlled according to the amount of steam generated in the vaporizing chamber.

Further, in the iron of the present invention, the rear end portion of the base is formed in a pointed shape, and both end portions of the heater formed in a substantially U shape are exposed on the upper surface side on the rear end portion side of the base. The steam flow path through which steam flows from the vaporization chamber toward the steam ejection hole has an extending portion formed on the rear end side of the base from the end of the heater. The extending portions are formed on the upper surface side and the lower surface side of the base.

This can prevent overheating of the rear end of the base. In general, the vaporizing chamber is disposed at the front portion of the base, and the temperature of the base is lowered by the generation of steam. On the other hand, the temperature of the rear part of the base is small due to the generation of steam, and the temperature rises when the heater is energized. By forming the extending portion from the end portion of the heater to the rear end portion side of the base, the temperature rise at the rear portion of the base can be suppressed by steam. Furthermore, overheating of the rear end portion from both the upper surface side and the lower surface side of the base can be efficiently prevented. Further, by forming the rear end portion of the base in the same sharp shape as the front end portion, it is possible to prevent an erroneous operation of wrinkling with the iron when the iron is retracted, and the usability can be improved.

In the iron of the present invention, the overheat prevention device is either a thermal fuse or a bimetal overheat prevention device.

This makes it possible to optimize the operating temperature and manufacturing cost of the overheat prevention device according to the capacity of the heater that heats the base.

As described above, the iron according to the present invention prevents the problem that the heater circuit is cut off during use due to excessive heating when heated by a high-capacity heater, and prevents overheating with different configurations. Since the device can be easily attached, it is useful as an iron.

DESCRIPTION OF SYMBOLS 101 Base 101c Rear end part 102

Heater

102a, 102b End part 103

Vaporization chamber

104a, 104b, 104d Steam passage 104c Extension part 105

Steam injection hole

106a, 106b Communication part 107 Temperature controller 108 Temperature controller fixation part 109 Overheating Prevention device 109a Thermal fuse 109b Bimetal overheat prevention device 110 Fixed portion for overheat prevention device 111 Electrical insulator 112 Heat transfer body 113 Second vaporization chamber 114

Lid

115, 115a, 115b, 115c, 115d Conductive metal body

Claims

A base heated by a heater;
A vaporization chamber formed in the base;
A steam ejection hole for ejecting steam generated in the vaporization chamber;
A temperature controller for adjusting the base to a predetermined temperature;
An overtemperature prevention device connected in series with the heater circuit;
An overtemperature preventing device fixing portion for attaching the overtemperature preventing device to the base, and
The base is provided so as to be capable of being heated by a heater having a different capacity, and the overheat prevention device having a different operating temperature for interrupting the heater circuit is selectively used for the overtemperature prevention device according to the capacity of the heater. An iron configured to be attached to a fixed part.
Adjacent to the steam flow path where the steam generated in the vaporization chamber flows toward the steam ejection hole, the overheat prevention device fixing portion and the temperature regulator fixing portion for fixing the temperature controller are provided. The iron according to claim 1, wherein the temperature controller fixing portion is provided on the downstream side of the steam flow path with respect to the overheat prevention device fixing portion.
The iron according to claim 2, wherein the fixing portion for the overheat prevention device and the fixing portion for the temperature regulator are formed close to each other, and the fixing portion for the overtemperature prevention device and the fixing portion for the temperature regulator are provided in series. .
3. The iron according to claim 2, wherein the temperature controller fixing portion is surrounded by a flow path of the steam through which steam flows from the vaporization chamber toward the steam ejection hole.
The rear end portion of the base is formed in a pointed shape, and both end portions of the heater formed in a substantially U shape are exposed on the upper surface side on the rear end portion side of the base, and from the vaporization chamber toward the steam ejection hole. The steam flow path through which the steam flows has an extending portion formed on the rear end portion side of the base from the end portion of the heater, and the extending portions are formed on the upper surface side and the lower surface side of the base. The iron according to claim 2.
The iron according to any one of claims 1 to 5, wherein the overheat prevention device is either a thermal fuse or a bimetal type overheat prevention device.