MXPA98000285A - Inner face of a plate with a floor cover face inter - Google Patents

Abstract

A plate having an inner face with an inner face base and an inner face envelope is described. The base is a unitary metal member with a heating element therein. The wrap is a one-piece sheet metal member that attaches directly to the ba

Description

INNER FACE PE A PLATE WITH A BACK COVER PE FACE INSIDE DESCRIPTION PE THE INVENTION The present invention relates to plants and, more particularly, to an inner face of a plate. German Patent DE 4316281 describes a base for ironing an electronic plate with a cast metal base and a base plate. The base plate has two layers of different material. German Patent G 9401094.3 and PCT publication WO 94/17236 describe an inner face covering made of co-laminated materials. PCT publication WO 95/27819 describes an inner face with a base attached to the body of the plate. The base has a coating of aluminum oxide. In the past, due to the processing limitations in the manufacturing plants, the available interior face items were usually restricted to satin (simply sand at the bottom of the inside face of the plate), silver / non-stick (applied to the plant) and mirror / polishing (multiple sanding and polishing operations of the same aluminum inner face). All these secondary operations require that the bottom of the inner face cast be free of imperfections. This is really a highly discarded emission in the manufacturing plant, because any imperfection could be highlighted by the various finishes. If the imperfections can not be removed before finishing or during the finishing process, the casting could either be completely discarded or remelted to obtain aluminum and high strength electrical wires. Any option adds cost to the product. All these secondary operations add cost to the product as well as link the valuable floor space, which can be effective for the manufacture of an additional product. Also, there is a higher cost in tools due to the need to maintain the finish of the casting tool at a high level in order to maximize the appearance of the casting. It is an object of the present invention to simplify the design and eliminate the costly side operations of the inner face of a plate by mechanically forming it through a roller e | outer edge of a steel aluminum casing, and / or stainless steel on the inside face of a plate. The envelope will then be the visible portion of the inner face and may be coated with a variety of coating or left as such to suit the desired market needs. According to one embodiment of the present invention, there is provided a plate having a housing, an inner face connected to the housing, and means for heating the inner face. The improvement comprises the inner face having a unitary base member with a heating element therein and a one piece casing. The one-piece wrap is directly attached to the base and covers a bottom surface of the base member.

According to another embodiment of the present invention, there is provided an inner face of the plate comprising a first cast metal member, and a second sheet metal member. The first cast metal member has a heating element extending therethrough. The second sheet metal member is connected to the first member and covers a bottom surface of the first member. The second sheet metal member has a thickness of between about 0.508 to about 0.0762 cm (0.02 to about 0.03 inches), so that the heat of the first member is rapidly transferred to the second member without a thermally conductive medium between the two members . According to another embodiment of the present invention, there is provided a plate having a housing, an inner face connected to the housing, and means for heating the inner face. The improvement comprises the inner face of the plate having a first metal member with a heating element therein and a second metal member connected to the first member. The second metal member covers a bottom surface of the first member. An air gap is provided between the bottom surface of the first member and the second member to provide an even distribution of heat from the first member to the second member. The above aspects and other aspects of the invention will be explained in the following description, taken in conjunction with the accompanying drawings, in which: Figure 1 is a perspective view of a plate incorporating the aspects of the present invention; Figure 2 is a partial cross-sectional view of the inside face of the plate shown in Figure 1; Figure 2A is a partial enlarged view of the interior face shown in Figure 2 showing steam holes through the interior face; Figure 3 is a cross-sectional view of the inner face envelope used on the inner face shown in Figure 2; Figure 4 is a partial enlarged cross-sectional view of an alternative embodiment of the inside face; Figure 5 is a partial enlarged cross-sectional view of another alternative embodiment of an inner face of the plate; Figure 6 is a bottom plan view of an interior face having an air gap as shown in Figure 5; Figure 6A is a partial cross-sectional view of the inside face shown in Figure 6, taken along the line 6A-6A; and Figure 7 is a partial enlarged cross-sectional view of another alternative embodiment of an inner face of a plate; Referring to Figure 1, a perspective view of a plate 10 incorporating aspects of the present invention is shown. Although the present invention will be described with reference to the embodiments shown in the drawings, it should be understood that the present invention can be incorporated into various types of alternative plate arrangements. In addition, any size, shape or type of suitable elements or materials can be used. Plate 10 generally comprises an inner face 12, a housing 14, a temperature control knob 16, a spray button 18a and a push button 18b. The inner face 12 includes a heating element 13 integrally molded therein. The heating element is electrically heated to the electric circuit 15 at the rear of the iron and a thermostat 17 connected to the temperature control knob 16. Referring also to Figure 2, a partial cross-sectional view of the inner face 12. The inner side 12 generally comprises a first base member 24 and a second cover member 26. The first member 24 is preferably a unitary cast metal base with a heating element extended therethrough. The second member 26 is preferably a sheet metal member having a thickness of between about 0.0508 cm to about 0.0762 cm (0.020 inches to about 0.030 inches). The base 24 has a lower perimeter flange 28. The second member 26 extends under the lower surface 32 of the base 24 and has a perimeter section 34 that is wrapped around the perimeter flange 28 of the base 24. More specifically the Perimeter section 34 is preferably formed by a roller on the perimeter rim 28. In this form, the second member 26 forms a shell for the bottom of the base 24. Referring also to Figure 2A, the base 24 has holes in it. steam 36 which extends towards the bottom surface 32. The envelope 26 has vapor holes 38 which are aligned with the holes 36. However, the envelope 26 does not extend towards the holes 36, nor is there a direct connection between the two members 24, 26 of the holes 36, 38. The attachment of the casing 26 to the base 24 is achieved only through the wrapping of the perimeter section 34 of the casing 26 on the perimeter flange 28. of the base 24. No additional fasteners or unions are needed. In order to provide a solid feel of the casing 26 against the bottom surface 32 of the base 24, the center of the casing 26 deforms during its attachment to the base 24. Referring also to Figure 3, the casing 26 is shown before it is connected to the base 24. The casing 26 has a pre-bent curved section 38. When the casing 26 is attached to the base 24, the curved pre-bent section 38 is flexed and flattened against the bottom surface 32 of the base 24. The deformation of the curved pre-bent section 38 during attachment to the base 24 causes the casing 26 to be deflected against the surface 32 bottom of the base. In mushroom shape, the wrap sits firmly and firmly against the bottom surface 32. This provides a solid feel to the inside face. In an alternative embodiment, the envelope does not have a pre-bent curved section.

This invention allows the elimination of all secondary operations to the inner face cast, except one; the deactivation and deflation operation, which occurs directly after die casting. Any polishing required for wrapping can be done either by the coating supplier or at home. Also, since the bottom of the inner face is completely covered, the appearance in relation to certain non-functional imperfections is eliminated. Therefore, all secondary operation costs, as well as waste and tool maintenance costs, are either completely eliminated or significantly reduced. Since the wrapping covers the bottom of the inner face in the box, a simpler casting design is in order to also reduce the design and maintenance costs. With the wrap being a separate article of the inner cast face, it can be coated with a multitude of coatings, leaving uncoated for a satin finish appearance, or the sourcing material is purchased with a pre-coated finish or a coating in the same. This flexibility allows a manufacturer to use various finishes on a plate in order to meet market needs. The thickness of the envelope also plays an important role in the construction of the plate. Since the wrapper is relatively thin, as compared to various other old models which have different types of wrap and have a high thermal conductivity, the wrap is quickly brought to a temperature. This eliminates the absolute need to place a thermally conductive medium between the inner casing and the casing. In order to ensure a contact between the envelope and the inner cast side, a pre-bent concave envelope may or may not be placed in the envelope. This pre-flexing can minimize the air gaps that allow rapid heating of the envelope. Other advantages of the relatively thin wrapping material coupled with a slight air gap between the casing and the inner casting face, is that it allows a much more even distribution of the heat on the outer surface of the casing. This could allow a more uniform ironing operation and eliminate scorching when the iron is used properly. This same construction also minimizes the extreme variations in temperature amplitudes and short circuits seen in typical plates by evenly distributing the temperature over the entire surface of the envelope. This invention also reduces the development of the interior face by simplifying the need for fine tuning of the thermostat, over temperature limiter and steam / drive rates to obtain the desired ironing results. This invention uses a shell with an aluminum substrate metal having a thickness of 0.0508 to 0.0762 cm (0.020 to 0.030 inches). This substrate metal comprises the same envelope and can be left uncoated or coated with a variety of coatings and / or finishes to suit the needs of the market. The wrapper can also be manufactured from a variety of pre-coated supply materials, wherein the coating is already adhered to the supply material when purchased and is simply stamped to form the wrapper. The wrap is formed from rewind supply material either in a progressive die system or transfer press. When formed from either of these two methods, the envelope has the final shape of the ventilation holes in it, as well as the sides formed at approximately a ninety degree angle from the bottom surface. The wrapper may or may not include a pre-bend formed in the bottom of the wrap, which provides a positive charge towards the cast inside face. This pre-bending helps to ensure that the wrap is hermetically adjusted to the inner cast face in order to maximize the heat transfer of the inner face cast through the wrap by minimizing the air gap between the two articles.

The casing is attached to the inner cast side by rolling the sides of the casing tightly against a predetermined surface of the outer edge of the cast inner faces. This procedure mechanically connects the envelope to the inside face in a box. The wrapping can also be made either of stainless steel and / or of a cold rolled steel. The inner face may also include a medium, thermally conductive or not, between the casing and the inner cast side. If the medium is thermally conductive, it can also improve the thermal transfer between the two. If the medium is thermally conductive or not, an additional benefit may be to take the air space between the envelope and the inner face cast and to dampen any sound transfer that may occur when the bottom of the envelope is hit once it is attached to the inside face cast. This provides the perception of a solid mass. Referring to Figure 4, a partial cross-sectional view of an alternative embodiment of an inner plate face is shown. The inner face 50 has a base 52, a sheet metal wrap 54 and an adhesive layer 56. The adhesive layer 56 is combined with a perimeter wrapper of the wrapper 54 on the base 52 to join the two members 52, 54 together . Preferably, the adhesive layer 56 is a silk screen adhesive that is thermally conductive. In an alternative embodiment, any type of thermally conductive medium can be used between the base and the envelope, such as a gasket. Referring to Figure 5, a partial cross-sectional view of another alternative embodiment of the inner side of the plate is shown. The inner face 60 has a base 62, a sheet metal wrap 64 and an air gap 66. The air gap extends between most of the area between the two members 62, 64. Spacers (not shown) can also be used. ). The air gap 66 provides a means for transferring heat from the base 62 to the envelope 64 with a predetermined heat transfer.

Referring now to Figures 6 and 6A, another alternative embodiment is shown. The inner face 70 has a base 72, a sheath 74 and a perimeter air gap 76. The sheath 74 is flat against the lower side 78 of the base 72, except on the underside of the base 72 on the outer perimeter of the base 72. base. By providing the perimeter air gap 76, the heat transfer from the base perimeter ledge 80 to the envelope 74 can be configured such that the lower side 82 of the envelope 74 has an even distribution of heat. The perimeter air gap 76 need not be fully extended around the perimeter of the inner face and may include a multiple separate perimeter air gap section. Instead of air in the gap 76, another thermally conductive or non-conductive medium, such as an adhesive, can be used. Referring now to Figure 7, another alternative mode is shown. The inner face 90 has a base 92 and an envelope 94. The bottom surface 94 of the base 92 has been provided with multiple slots 96. The slots 96 form air cavities between the two members 92, 94 to provide a heat transfer substantially uniform along the entire bottom surface of the inner face. The wrapper 94 includes a coating 98, such as a non-tacky coating. Any suitable type of non-tacky coating can be used.

Claims (19)

1. A plate having a housing, an inner face connected to the housing, and means for heating the inner face, characterized in that: the inner face has a unitary base member with a heating element therein, and a one piece casing directly attached to the base member and covering a bottom surface of the base member, wherein the shell has a pre-bent curved section that flexes and flattens against the bottom of the base member when the shell is joined to the base member, and wherein the pre-flexed section is biased against the bottom of the base member.

2. The sheet according to claim 1, characterized in that the wrapper is a sheet metal member having a thickness of between about 0.0508 cm to about 0.0762 cm (0.02 inches to about 0.03 inches).

3. The iron according to claims 1 or 2, characterized in that an air gap is provided between the bottom of the base member and the envelope.

4. The iron according to any of the preceding claims, characterized in that the envelope includes a coating along its bottom side.

5. The iron according to claim 4, characterized in that it comprises a means between the base member and the envelope.

6. The plate according to claim 5, characterized in that the medium is thermally conductive.

7. The plate according to claim 6, characterized in that the medium is a silk screen adhesive.

8. The plate according to claim 1, characterized in that the sides of the envelope are formed through a roller on the sides of the base member. -

9. The iron according to claim 1, characterized in that there is no additional member located between the base member and the envelope.

10. An inner side of a plate, characterized in that it comprises: a first cast metal member having a heating element extending therethrough; and a second sheet metal member connected to the first member and covering the bottom surface of the first member, the second sheet metal member has a thickness of between about 0.0508 cm to about Q.0762 cm (0.02 inches to about 0.03 inches) ), so that the heat of the first member is rapidly transferred to the second member without a thermally conductive medium between the two members.

11. The iron according to claim 10, characterized in that the second member is directly connected to the first member.

12. The iron according to claims 10 or 11, characterized in that no additional member is located between the first and second members.

13. The plate according to any of the preceding claims, characterized in that an air gap is provided between the bottom surface of the first member and the second member.

14. The plate according to claim 10, characterized in that the second member has a pre-bent curved section that is flattened against the bottom of the first member when the second member is joined to the first member.

15. The iron according to claim 10, characterized in that the second member includes a coating along the bottom side.

16. A plate having a housing, an inner face connected to the housing and means for heating the inner face, characterized in that: the inner face has a first metal member with a heating element therein, and a second sheet metal member connected to the first member and covering a bottom surface of the first member, wherein an air gap is provided between the bottom surface of the first member and the second member to provide a predetermined heat distribution from the first member to the second member , wherein the second member has a curved pre-bent section that is flattened against the bottom surface of the member, when the second member is joined to the first member.

17. The plate according to claim 16, characterized in that the second metal member is a one-piece sheet metal member having a thickness of between about 0.0508 cm to 0.0762 cm (0.02 inches to about 0.03 inches) and is directly bonded on the first metal member.

18. The plate according to claim 15 or 16, characterized in that the second member has a coating along its bottom surface.

19. The plate according to claim 16, characterized in that the second sheet metal member has its outer perimeter deformed on an outer edge perimeter of the first metal member and, wherein the air gap between the two members is provided in a area along a bottom perimeter of its inner face, the connection in the perimeters is the only means of connection between the two members.