JPS598718Y2 - steam iron - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved airtight structure of a vaporizing chamber in a steam iron.

Generally, fastening using screws or the like is widely used, and it has been proposed that, for example, in steam irons, a lid plate or the like attached to the hanging surface of the base can be removably screwed with screws.

However, after long-term use, the screws become completely fixed to the aluminum alloy base material due to the difference in thermal expansion coefficients between the two members, resulting in a disadvantage that they cannot be easily removed.

The present invention focuses on this point and utilizes this in the airtight structure of the vaporizing chamber to prevent pressure leaks.

An embodiment of the present invention will be explained below with reference to the attached drawings.
1 is a base in which a heater 2 is embedded, a vaporizing chamber 3 and a steam passageway 4 that is approximately U-shaped and surrounds this vaporizing chamber 3.
The steam passage 4 is provided with a steam ejection hole 5.

6 covers this steam passage 4 and a part of the vaporization chamber 3, and the base 1
With a base lid fixed on top, the base lid 6 and the base 1 define a steam passage 4.

Reference numeral 7 denotes a circular stepped portion with an opening 8 formed in the portion of the base lid 6 facing the vaporization chamber 3, and the outer surface of the stepped portion is threaded.

Reference numeral 9 designates a vaporizing chamber cover which is screwed onto the outside of the stepped portion 7, and has a flange 10 on its periphery and a notch 11 for securely screwing onto the flange 10.

The vaporization chamber cover 9 is made of, for example, a stainless steel plate having a different coefficient of thermal expansion than the base cover 6, and is firmly screwed onto the base cover 6 made of aluminum alloy or the like.

Reference numeral 12 denotes a nozzle portion fixed to the center of the vaporization chamber lid 9, which communicates between the tank 13 installed on the base 1 and the vaporization chamber 3.

Reference numeral 14 denotes an opening/closing punch whose lower end faces the nozzle portion 12 and opens and closes by vertical movement.

In the above structure, the vaporizing chamber lid 9 of this steam iron
The base lid 6 is firmly attached to the circular stepped portion 7 of the base lid 6 due to the difference in thermal expansion coefficient of the aluminum alloy or the like that is the material of the base lid 6.

In particular, the vaporizing chamber lid 9 is brought into close contact with the circular stepped portion 7 of the base lid 6 by the heat cycle of heating and cooling unique to a steam iron which is heated to a high temperature.

After long-term use, the vaporization chamber cover 9 becomes completely integrated with the circular step 7 of the base cover 6 in such a manner that it is more firmly wedged into the circular step 7.

Therefore, according to the present invention, the base lid and the vaporization chamber lid, which are made of materials with different coefficients of thermal expansion, are more firmly bonded and integrated through heat cycles, making it possible to maintain sufficient confidentiality and ensure long-term use. Pressure leaks can be reliably prevented.

Furthermore, since the two are screw-jointed, the sealing area is increased, and processing and installation are easy, which has great effects.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a main part of a steam iron according to an embodiment of the present invention, Fig. 2 is a plan view of the same, and Fig. 3 is a line A--A in Fig. 2.
It is an A' line sectional view. 1... Base, 3... Vaporization chamber, 6...
...Base lid, 7...Circular step, 8...
... Opening, 9... Vaporizing chamber lid, 12...
・Nozzle part.

Claims (1)

[Scope of utility model registration request] a base in the form of a vaporization chamber, a base lid fixed to the base and having a circular step portion that opens the portion facing the vaporization chamber and protrudes upward; and a vaporizer attached to the circular step portion. and a chamber lid, the vaporizing chamber lid being made of a material having a smaller coefficient of thermal expansion than the base lid, and screwed onto the outside of the circular stepped portion.