HK1000173B - Multilayer iron soleplate made of colaminate materials - Google Patents

Description

The Commission has already adopted a proposal for a directive.

The present invention relates to an iron iron sole with a casting body to which a metallic ironing helmet is fixed by means of fixing.

The first is the technical

The iron is usually made of aluminium and a metal hood is directly attached to form the iron sole. The iron is usually made of stainless steel and is attached to the iron sole with silicone glue. The attachment can be improved by peripherally attaching the iron sole to the sole. The manufacture of such a hood requires, prior to attaching the iron sole, a step of machining certain surfaces of the iron body.

Alternative or improvement solutions such as increasing the relative thickness of the stainless steel sheet lead to some improvement in the stability of the sole over time, but contribute correlatively to a decrease in heat transfer and of course to a higher cost of the finished product.

The co-laminated materials are also well known and have been used in the automotive sector, for which purpose two-layer aluminium-stainless steel co-laminated materials were used in the search for the anti-corrosion effect of stainless steel and its aesthetic appearance.

The use of aluminium-stainless steel co-laminated materials has also been used to make the bottom of some pots. To this end, the thermal diffusion effect of aluminium and the aesthetic effect of the stainless steel outer layer have always been sought, without regard to the large difference in coefficient of thermal expansion between the two co-laminated materials leading to a well-known bottom-pumping effect.

It is also known that different layers of metal assembled by a solid phase bond are used to make iron-iron soles. Such soles are described in document FR-A-1502451 and are associated with an additional layer of metal, called a bond, which is brought to its melting temperature to obtain a metallurgical bond when the iron body is cast on the soles.

The invention is presented in the following table:

The purpose of the present invention is therefore to remedy the problems mentioned above in the production of iron ironing soles and to propose a new iron soles that are simplified to manufacture and do not require surface preparation while retaining good heat exchange properties without noticeable deformation.

Another object of the invention is to provide an iron iron sole for ironing with thermal expansion controlled to ensure a long service life and high-quality ironing.

Another object of the invention is to provide an iron iron sole in which the fixing of the metal helmet to the foundry body is achieved in a particularly simple and cost-effective manner.

The subject of the invention also concerns a new use of co-laminated materials in the field of household appliances and a method of assembling an iron iron hood on a foundry body.

The purpose of the invention is achieved by means of an iron iron sole with a solid casting body of an iron iron iron head consisting of at least two layers of materials, the first layer forming the fixing layer on the casting body, the second layer forming the ironing layer, characterized by all layers being made of co-laminated materials, with the first layer made of the same material as the casting body or in a material with similar physical characteristics, the thickness of the second layer being between 5 and 40 per cent of the thickness of the first layer, and preferably between 17 and 15 per cent.

The objects of the invention are also achieved by using a co-laminated material with at least two layers as an iron iron iron iron iron iron coating.

The objects of the invention are also obtained by means of a process of making an iron iron sole in which a casting body is joined to an iron core consisting of at least two layers of materials, one forming a fixing layer on the foundry core and the other forming an iron core, characterized by:

The Commission shall be assisted by the Member States.

Other particularities and advantages of the invention will be shown and shown in more detail by reading the description given below with reference to the attached drawings, given as illustrative and non-limiting examples, in which: Figure 1 shows, by means of a partial cross-section, the structure of an iron iron sole conforming to the invention.Figure 2 shows, by means of a partial upper view of the nose of a iron sole conforming to the invention, one of the means of attachment of the said sole.Figure 3 shows, by means of a partial cross-section, the means of attachment shown in Figure 2, by means of lines III-III of Figure 2.

How to make the invention

The iron-iron sole shown in Figure 1 has a casting body 1 from a casting piece and made for example of aluminium and delimiting a lower face 2 considerably flat. The upper part of the iron-iron sole 1 defines a series of cavities and channels intended to be formed with a closing plate of the vaporization chamber and a thermal skirt (not shown in the figures) the different compartments and essential elements of an iron iron. In the example of construction shown in Figure 1 the iron-iron sole is intended for a steam iron, and the iron-iron sole 1 for this purpose has a series of 3 openings with a vaporization relationship (not shown in the figures).

Err1:Expecting ',' delimiter: line 1 column 585 (char 584)

In a particularly advantageous variant, the foundry body will be made of aluminium, and the metal helmet will have a two-layer co-laminated assembly in which the first layer 5 is also aluminium, while the second layer 6 is stainless steel.

To achieve this, the thickness of the second layer 6 shall be between 5% and 40% of the thickness of the first layer 5 and preferably between 15% and 17%. The thickness of the second layer shall preferably be between 5% and 12% on the one hand, and between 14% and 40% on the other hand, of the thickness of the first layer 5, or between 15% and 40%, or even between 15%, and 20% on the other. Other preferred ranges, such as 20%, 40% or 30% to 40% are of course possible.

According to another particularly advantageous variant of invention 1, the total thickness of the coated metallic casing 4 corresponding to the sum of the thicknesses of the first layer 5 and the second layer 6 will be between 1.6 and 2 mm and preferably between 1.7 and 1.9 mm. The advantage is that the thickness of the second layer 6 is between 0.1 and 0.4 mm and preferably between 0.2 and 0.3 mm, while the thickness of the first layer 5 is between 1.4 and 1.7 mm and preferably between 1.5 and 1.6 mm. The above-mentioned thickness ranges are particularly appropriate for an aluminium-stainless coated material.

In another embodiment, the metallic head 4 may be made of three layers of co-laminated materials, the first layer 5 being aluminium or copper, the second layer 6 being copper or stainless steel and the intermediate layer (not shown in the figures) being aluminium copper or ordinary steel.

The metal casings thus made will be of the alloy-steel-stainless type or preferably of alloy-copper-stainless or copper-alloy-stainless. The relative thicknesses of the first layer 5 and the second layer 6 will each represent between 15 and 17 per cent of the total thickness of the trilayer casing, the middle layer representing between 66 and 70 per cent of the total thickness.

The co-laminated metallic casing 4 is brought in and then fixed to the foundry body 1 by means of fixing devices, including a layer of glue 10, preferably heat-resistant and/or based on polymerized silicone glue, extending between the bottom face 2 and the first layer 5.

Where the iron sole is intended for steam ironing, it shall have steam holes 11 which are fitted to the body of the foundry 1 in holes 3.

To complete the fixing of the co-laminated metallic helmet 4, it is optional to make at least one mechanical point attachment of the metallic helmet to the foundry body 1. To this end, the metallic helmet 4 has at least one area forming a folded edge 12 which is supported by its slice against a peripheral edge 13 of the foundry body 1.

According to another embodiment of the invention, the metallic helmet 4 is fitted with a rounded peripheral edge 14 (Figure 1) extending the second layer 6 and promoting good mechanical grip of the sole.

According to a further variant of the iron iron sole according to the invention, the metallic head 4 is secured to the foundry body 1 by exclusively mechanical means of attachment, e.g. threaded rods or rivets.

The use of a co-laminated material based on at least two layers of aluminium-stainless steel, preferably as an iron ironing metal casing, allows the advantages of both co-laminated metals to be combined. The first layer 5, made of the same or a similar material to the foundry body, ensures good thermal conductivity and an optimal bonding and bonding to ensure stability of the assembly due to the homogeneity of materials. The second layer is effect 6 ensures a good aesthetic effect and gives the sole good sliding properties without affecting the cohesion of the assembly despite the differences in co-lamination coefficient and the high risks of thermal deformation on the assembly.No shear effect was observed between the stainless steel and the aluminium, and it appears that the fact that the foundry body is made of aluminium and the first layer 5 also of aluminium makes it possible to eliminate all surface machining operations without any deterioration in mechanical strength or loss of heat transmission. The thicknesses involved also allow a differential expansion of the layers of the colaminated assembly without causing mechanical degradation of the sole structure.

The process of making an iron iron iron sole in accordance with the invention consists in, from a metal casing 4 consisting of at least two layers of co-laminated materials 5,6, to bring the said casing 3,10,12 and then fix it by means of fixing means to the foundry body 1 previously formed by any known technique, e.g. by moulding. The foundry body 1 thus being in the form of an easily transportable unit part, can be made solid to the metal casing 4 and easily attached to any industrial handling and assembly operation. The process according to the invention also consists in bringing the metal co-lamination casing 4 and then fixing it to the foundry body 1 without preparing a surface, the two layers of the casing 3,10, and then using a mechanical means to fix the body 1, 12, in addition to the first layer of material 3,10, and using a thermo-contact device, which is not used in the first layer of the body 1, 12, in addition to the two layers of the foundry body 1,10, and then using a mechanical means of attachment to the surface of the co-laminated material.

The Commission has decided to initiate the procedure laid down in Article 8 (2) of Regulation (EC) No 1049/2001 in respect of the following:

The invention is used in the manufacture of iron-iron soles, particularly steam-iron soles.

Claims (17)

1. A soleplate for an iron, the soleplate comprising a casting (1) secured to a metal ironing cover (4) made up of at least two layers (5, 6) of different materials, of which a first layer (5) forms the layer for fixing to the casting (1) and a second layer (6) forms the ironing layer, said soleplate being characterized in that the assembly of layers (5, 6) is constituted by co-laminated materials, with the first layer (5) constituted by the same material as the casting (1) or by a material having similar physical characteristics, the thickness of the second layer (6) lying in the range 5% to 40% of the thickness of the first layer (5), and preferably in the range 15% to 17%.
2. A soleplate according to claim 1, characterized in that the total thickness of the first layer (5) and of the second layer (6) lies in the range 1.6 mm to 2 mm, and preferably in the range 1.7 mm to 1.9 mm.
3. A soleplate according to claim 1 or 2, characterized in that the thickness of the second layer (6) lies in the range 0.1 mm to 0.4 mm, and preferably in the range 0.2 mm to 0.3 mm, and the thickness of the first layer (5) lies in the range 1.4 mm to 1.7 mm, and preferably in the range 1.5 mm to 1.6 mm.
4. A soleplate according to any one of claims 1 to 3, characterized in that the metal cover (4) is made up of two layers (5, 6) of co-laminated materials.
5. A soleplate according to claim 4, characterized in that the casting (1) is made of aluminum, the first layer (5) is constituted by copper or preferably by aluminum, and the second layer (6) is constituted by copper, by nickel, by titanium, or preferably by stainless steel.
6. A soleplate according to any one of claims 1 to 5, characterized in that the metal cover (4) is mounted on a casting preferably made of aluminum, and is made up of three layers of co-laminated materials, the first layer (5) being constituted by copper or by aluminum, the second layer (6) being constituted by stainless steel or by copper, and the intermediate layer being constituted by aluminum, by copper, or by steel.
7. A soleplate according to claim 6, characterized in that each of the first and second layers (5, 6) represents in the range 15% to 17% of the total thickness of the three-layer cover (4).
8. A soleplate according to any one of claims 1 to 7, characterized in that the casting (1) is secured to the metal cover (4) by fixing means which include a layer of adhesive (10), preferably based on a polymerized silicone adhesive, extending between the casting (1) and the first layer (5).
9. A soleplate according to any one of claims 1 to 8, characterized in that the metal cover is provided with a series of openings (3), said cover being crimped onto the casting (1) via said openings, whose crimped material forms fixing means.
10. A soleplate according to any one of claims 1 to 9, characterized in that the metal cover (4) includes at least one zone forming a folded-over margin (12) abutting against the casting (1) and forming fixing means, said folded-over margin (12) preferably being situated at the front of the soleplate so as to constitute a clip-on tip.
11. A soleplate according to any one of claims 1 to 10, characterized in that the metal cover includes a rolled-over peripheral margin (14).
12. An iron provided with a soleplate according to any one of claims 1 to 11.
13. The use of a co-laminated material based on at least two layers (5, 6) as a metal ironing cover (4) mounted on the casting of an iron.
14. A method of making a soleplate for an iron, in which method a casting (1) is secured to a metal ironing cover (4) made up of at least two layers of different materials (5, 6), one forming a layer for fixing to the casting, and the other forming the ironing layer, said method being characterized in that it consists in using at least two co-laminated layers (5, 6), in mounting said cover on the already-formed casting (1), and in fixing it thereto by fixing means (3, 10, 12).
15. A method according to claim 14, characterized in that it consists in mounting the metal ironing cover (4) on the casting (1) and in then fixing it thereto without any surface preparation.
16. A method according to claim 14 or 15, characterized in that it consists in:

    using a first layer (5) of the metal cover (4) as a fixing layer for fixing via mechanical-type fixing means (3, 10, 12);

    using the same material as the casting (1) or a material having similar physical characteristics for said first layer (5); and

    using the second layer (6) to form the ironing layer, the thickness of the second layer (6) lying in the range 5% to 40% of the thickness of the first layer (5), and preferably in the range 15% to 17%.
17. A method according to claim 14 or 16, characterized in that it consists in spreading a layer of heat-resistant adhesive on the surface of the first layer (5) that comes into contact with the casting (1) so as to constitute the mechanical fixing means (3, 10, 12) at least in part.