ES2650362T3 - Built-in cooking hob comprising a housing and a passage opening of a power cable - Google Patents

Abstract

Built-in cooking hob (1) comprising a cooking plate (4), a housing (5), a control unit (9), at least one heating means, a power cable (8), sealing said cooking plate cooking (4) an upper opening (6) of said housing (5), said housing (5) comprising at least one lower wall (5a) and side walls (5b, 5c, 5d), feeding said power cable (8) said control unit (9) and said at least one heating means from an external electrical power network, characterized in that said housing (5) comprises an additional wall (5e) that joins said lower wall (5a) of said housing (5 ) and said rear side wall (5b) of said housing (5), wherein said additional wall (5e) of said housing (5) extends in an oblique direction with respect to said lower wall (5a) of said housing (5 ) and with respect to said rear side wall (5b) of said housing (5), and wherein said additional wall (5e) of dich The housing (5) comprises a passage opening (13) of said power cable (8).

Description

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Built-in cooking hob comprising a housing and a passage opening of a power cable.

The present invention relates to a built-in cooking hob, in particular to a built-in induction cooking hob.

In general, it refers to a built-in cooking hob that comprises a housing arranged inside an insertion opening placed in a work plane of an insert, and a cooking plate resting on the work plane of the furniture of insertion, and in particular on a peripheral area of the insertion opening placed in the working plane of the insert.

The present invention relates, in a general manner, to built-in cooking counters, and more particularly to domestic cooking countertops comprising different cooking zones that can be controlled in operation by means of control available to a user.

This type of built-in cooking hob comprises heating means, for example, inductors, arranged at the level of the heating zones under the cooking plate.

Built-in cooking counters are already known comprising a cooking plate, a housing, a control unit, at least one heating means, a power cable. The cooking plate seals an upper opening of the housing. The housing comprises at least one bottom wall and side walls. The power cable feeds the control unit and said at least one heating means from an external power grid.

Also known is US 2 992 315 which describes a built-in cooking hob of this type comprising a cooking plate, a housing, a control unit, heating means, a power cable.

However, these built-in cooking countertops have the drawback of having a passage opening of the power cable in the bottom wall or in the rear side wall of the housing.

Accordingly, the placement of the passage opening of the power cable in the lower wall or in the rear side wall of the housing may require, during the installation of the built-in cooking hob, the cut-out of the rear panel of the insert cabinet for the passage of the power cable in a sanitary vacuum disposed between a kitchen wall and the back panel of the insert.

In addition, such an arrangement of the passage opening of the power cable through the housing of the built-in cooking hob creates a nuisance during the installation of the built-in cooking hob through an opening placed in a work plane .

The inconvenience is caused, particularly, during the installation of the built-in cooking hob above another household appliance, which can be a dishwasher or a cooking oven, arranged inside the cabinet.

On the other hand, the insertion of the built-in cooking hob through an opening placed in a work plane and above a drawer arranged in the insert can cause blockage of the drawer outlet.

In addition, in the case where the passage opening of the power cable is placed in the rear side wall of the housing, this placement of power cable outlet through the rear side wall of the housing may be incompatible depending on the thickness of the work plane.

Thus, during the insertion of the built-in cooking hob in the insertion opening placed in the work plane, the thickness of the work plane can cover at least partly, even completely, the passage opening of the power cable placed in the rear side wall of the housing.

Therefore, the at least partial coverage of the passage opening of the power cable placed on the rear side wall of the housing by the thickness of the work plane prevents the complete insertion of the built-in cooking hob and the passage of the power cable towards a sanitary void arranged between a kitchen wall and the back panel of an insert.

The purpose of the present invention is to solve the aforementioned drawbacks and propose a built-in cooking hob that facilitates the installation thereof through an inlet opening of a work plane.

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To this end, the present invention relates to a built-in cooking hob comprising a cooking plate, a housing, a control unit, at least one heating means, a power cable, said cooking plate sealing an upper opening of said housing, said housing comprising at least one bottom wall and side walls, said power cable feeding said control unit and said at least one heating means from an external electrical power network.

According to the invention, said housing comprises an additional wall extending between said lower wall of said housing and said rear side wall of said housing, wherein said additional wall of said housing extends in an oblique direction with respect to said lower wall of said housing and with respect to said rear side wall of said housing, and wherein said additional wall of said housing comprises a passage opening of said power cable.

Thus, the additional wall of the housing that joins the lower wall of the housing to the rear side wall of the housing according to an oblique direction allows the power cable to be oriented outside the housing according to a predetermined inclined direction in order to facilitate the installation of the built-in cooking hob through an inlet opening of a work plane.

In this way, the placement of the passage opening of the power cable in the additional wall of the housing allows the built-in cooking hob to be installed in an insertion opening of the work plane of a customary insert furniture without modifying this insert furniture , and in particular avoiding trimming the back panel of the insert for the passage of the power cable in a sanitary void arranged between a kitchen wall and the rear panel of the insert.

The passage opening of the power cable placed in the additional wall of the housing that joins the lower wall of the housing to the rear side wall of the housing according to an oblique direction allows the power cable to be passed over a rear panel of the furniture of insertion, and in particular directly to a sanitary void arranged between the rear panel of the insert and a kitchen wall, without having to make a cut in the rear panel of the insert.

The passage opening of the power cable placed in the additional wall of the housing that joins the lower wall of the housing to the rear side wall of the housing according to an oblique direction also allows the power cable to pass under the work plane without the impediment of the thickness of the work plane, not at least partially covering the thickness of the work plane the passage opening of the power cable placed in the additional wall of the housing.

In addition, the placement of the passage opening of the power cable in the additional wall of the housing allows the built-in cooking hob to be installed in an inlet opening of the work plane of an inlet furniture without causing any particular discomfort when the worktop of Built-in cooking is placed above a drawer that slides inside the cabinet and under the work plane.

Also, the placement of the passage opening of the power cable in the additional wall of the housing allows the built-in cooking hob to be installed in an opening of the work plane of an insert furniture without causing a particular nuisance when the built-in cooking hob It is placed above another appliance, which can be a dishwasher or a baking oven, arranged inside the cabinet.

On the other hand, the additional wall of the housing that joins the lower wall of the housing to the side wall of the housing in an oblique direction allows the housing to be more rigid.

Other particularities and advantages of the invention will become apparent in the following description. In the attached drawings, provided by way of non-limiting examples:

- Figure 1 is a schematic plan view of a built-in cooking hob according to an embodiment of the invention;

- Figure 2 is a plan view of a built-in cooking hob according to an embodiment of the invention, where the cooking plate that seals an upper opening of the housing has been removed;

- Figure 3 is a rear view of an assembly formed by a built-in cooking hob and an insert furniture according to an embodiment, wherein the cooking plate of the built-in cooking hob is supported on a work plane of the furniture of insert;

- Figure 4 is a sectional view of Figure 3 according to section plane A-A;

- Figure 5 is a perspective view of an assembly formed by a built-in cooking hob and a

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insert furniture according to one embodiment, wherein the cooking plate of the built-in cooking hob rests on a work plane of the insert furniture and where another household appliance is placed under the built-in cooking hob and inside of the insert furniture; Y

- Figure 6 is a plan view of a support of a power control card of a control unit according to an embodiment of the invention, wherein said support comprises a passage element of a power cable that is placed through a passage opening of an additional wall of the housing.

First, with reference to Figure 1, a built-in cooking hob will be described according to an embodiment of the invention.

The built-in cooking hob 1 comprises at least one heating zone.

In this example, the built-in cooking countertop 1 comprises four heating zones F1, F2, F3, F4.

The built-in cooking hob 1 comprises a cooking plate 4, the cooking plate 4 being able to receive cooking vessels.

In one embodiment, the cooking plate 4 is a plate made of ceramic hob.

The built-in cooking countertop 1 comprises a housing 5. The housing 5 comprises at least one bottom wall 5a and side walls 5b, 5c, 5d. The side walls of the housing 5 comprise a front wall 5c, a rear wall 5b and two side walls 5d.

In this case, the housing 5 is substantially parallelepiped.

The cooking plate 4 of the built-in cooking hob 1 seals an upper opening 6 of the housing 5.

In this case and in no way at all, the housing 5 of the built-in cooking hob 1 is fixed to the cooking plate 4 by means of crossbars fixed by gluing to the cooking plate 4 and then fixed by screwing to the housing 5 .

The built-in cooking counter 1 comprises at least one heating means (not shown). Each of the heating zones comprises at least one heating means.

The heating means or means of each of the heating zones can be powered by electricity and / or gas. These heating means can be of the induction type, radiant or halogen, or even gas.

In one embodiment, each heating zone may consist of one or more inductors.

Thus, a single inductor can comprise a heating zone.

Alternatively, a heating zone may comprise several inductors.

In one embodiment, the arrangement of the plurality of the inductors may be concentric and comprise, for example, two or three inductors that allow the size of the heating zone to be adapted to the size of the vessel to be heated.

In one embodiment, the arrangement of the plurality of the inductors may be adjacent, in particular either in line, either in a triangle, or in a square, and comprise, for example, between two and four inductors that allow the size of the heating zone to the size of the container to be heated.

In the case of a cooking hob comprising heating means powered by electrical energy, such as inductors or radiating or halogen heating elements, the set of heating means that make up each cooking zone F1, F2, F3, F4 they are placed under the cooking plate 4.

The heating zones F1, F2, F3, F4 can be identified by a screenprint arranged in front of the heating means that make up each heating zone, and placed under the cooking plate 4.

Naturally, although an example of a built-in cooking hob 1 is illustrated in which four heating zones are defined which constitute cooking stoves F1, F2, F3, F4 in the cooking plane, the present invention also applies to a cooking hob that has a variable number or different forms of cooking stoves, or even, which has a cooking plane without a predefined cooking zone or hob, the latter being defined individually by the position of the container in front of

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a subset of induction coils arranged under the cooking plane.

In this case, it is not necessary to describe in more detail the assembly of the heating means.

The built-in cooking hob 1 comprises a control unit 9.

The built-in cooking hob 1 comprises a power cable 8. The power cable 8 feeds the control unit 9 and said at least one heating means from an external power grid.

In this case, the control unit 9 comprises a single power control card, allowing the power control card to support all the electronic and computer means necessary for the control of the built-in cooking hob 1.

The power control card of the control unit 9 is mounted on a support 16, such as that illustrated in Figure 2, for example, by means of elastic ratchet elements.

In the case where the housing 5 of the built-in cooking hob 1 is made from a plate, the support 16 of the power control card of the control unit 9 can be fixed to the bottom wall 5a of the housing 5, for example by means of elastic ratchet elements.

The support 16 of the power control card of the control unit 9 can be made of plastic material.

In the case where the housing 5 of the built-in cooking hob 1 is made of plastic material, the support 16 of the power control card of the control unit 9 can be formed from the bottom wall 5a of the housing 5, for example by molding.

In the case of a built-in induction cooktop 1, the power control card comprises in particular the power supply device with inverter of the inductors.

In another embodiment, the built-in cooking countertop 1 can comprise several power control cards that allow distributing the set of electronic and computer means necessary for the control of this built-in cooking countertop 1.

In practice, electrical connections 10 are provided between the control unit 9 and each cooking hob F1, F2, F3, F4.

The power control card of the control unit is usually made from a printed circuit board.

On the other hand, the power control card of the control unit 9 is arranged under the cooking plate 4.

In this embodiment, the built-in cooking hob 1 comprises a control keypad 11.

Generally, the control keypad 11 is disposed on one side of the built-in hob 1, for example along a leading edge or a side edge of the cooking plate 4.

Advantageously, the control keypad 11 is arranged inside the housing 5 of the built-in cooking hob 1 and under the cooking plate 4.

The control keypad 11 comprises selection means and display means that allow the user to control, in particular, with respect to power and duration the operation of each heating zone F1, F2, F3, F4.

In particular, the user can, by means of the control keypad 11, assign a setpoint power to each cooking hob covered by a container.

Now, with reference to Figures 2 to 6, a built-in cooking hob according to an embodiment of the invention will be described, as well as the insertion of the same in a work plane.

A cooking countertop 1 of this type can be embedded in a work plane 2, and in particular in a work plane 2 of an insert furniture 3.

The work plane 2 comprises a snap opening 7, allowing the snap opening 7 to receive the housing 5 of the built-in cooking hob 1.

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The insertion opening 7 of the work plane 2 is greater than the volume occupied by the housing 5 of the built-in cooking hob 1.

Generally, the cutout of the insertion opening 7 placed in the work plane 2 is substantially rectangular or square.

The cooking plate 4 of the built-in cooking hob 1 rests on the work plane 2, and in particular the cooking plate 4 rests on the peripheral contour of the work plane 2 located around the insert opening 7 of the work plane work 2.

The work plane 2 preferably rests on the insert 3, and preferably the work plane 2 is fixed to the insert 3.

The insert 3 preferably comprises an insert niche of another household appliance 12, which can be for example a cooking oven or a dishwasher.

The insertion niche of the insert 3 is substantially parallelepiped.

The insert 3 comprises at least one rear panel 3a and side panels.

In the case where the insert 3 is arranged along a kitchen wall, a sanitary vacuum is preferably made between the kitchen wall and the rear panel 3a of the insert 3.

The housing 5 comprises an additional wall 5e extending between the lower wall 5a of the housing 5 and the rear side wall 5b of the housing 5, wherein the additional wall 5e of the housing 5 extends in an oblique direction with respect to the lower wall 5a of the housing 5 and with respect to the rear side wall 5b of the housing 5, and wherein the additional wall 5e of the housing 5 comprises a passage opening 13 of the power cable 8.

Thus, the additional wall 5e of the housing 5 that joins the lower wall 5a of the housing 5 to the side wall 5b of the housing 5 in an oblique direction allows the power cable 8 to be oriented to the outside of the housing 5 according to an inclined direction predetermined in order to facilitate the installation of the built-in cooking hob 1 through a socket 7 of the work plane 2.

In this way, placing the passage opening 13 of the power cable 8 in the additional wall 5e of the housing 5 allows the built-in cooking hob 1 to be installed in an insert opening 7 of the work plane 2 of an insert furniture 3 usual without modifying this insert 3, and in particular avoiding trimming the rear panel 3a of the insert 3 for the passage of the power cable 8 in a sanitary vacuum disposed between a kitchen wall and the rear panel 3a of the furniture Insert 3.

Traditionally, for a built-in cooking hob 1 having a cooking plate 4 of a width of 600mm and a depth of 600mm, the work plane 2 comprises a cutout for the insertion opening 7 that is 490mm wide and a depth of 560mm.

In one embodiment, the insertion opening 7 of the work plane 2 is located 40mm from the rear edge of the work plane 2.

The rear panel 3a of the insert 3 is arranged 20mm from the rear edge of the insert 7 of the work plane 2.

And the minimum distance between the upper edge of the rear panel 3a of the insert cabinet 3 and the lower wall 5a of the housing 5 of the built-in cooking countertop 1 is 5mm.

Thus, the position of the insertion opening 7 of the work plane 2 with respect to the rear edge of the work plane 2 allows to create a free zone between the insert furniture 3 and the housing 5 of the induction cooktop 1 with the in order to minimize the heating of the insert 3 during operation of the built-in cooking hob 1.

Naturally, the dimensions of the work opening of the work plane and the placement of this work opening in the work furniture are not at all limiting and may be different, in particular depending on the dimensions of the worktop housing. Built-in cooking

The passage opening 13 of the power cable 8 placed in the additional wall 5e of the housing 5 that joins the lower wall 5a of the housing 5 to the rear side wall 5b of the housing 5 in an oblique direction allows the power cable to pass 8 above a rear panel 3a of the insert furniture 3, and in particular directly to a sanitary void disposed between the rear panel 3a of the insert furniture 3 and a wall of the

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kitchen, without having to make a cut in the rear panel 3a of the insert 3, as illustrated in figure 5.

The passage opening 13 of the power cable 8 placed in the additional wall 5e of the housing 5 that joins the lower wall 5a of the housing 5 to the rear side wall 5b of the housing 5 in an oblique direction also allows the cable feed 8 below the work plane 2 without impeding the thickness of the work plane 2, the thickness of the work plane 2 not at least partially covering the passage opening 13 of the power cable 8 placed on the additional wall 5e of the casing 5.

In addition, the placement of the passage opening 13 of the power cable 8 in the additional wall 5e of the

housing 5 allows the built-in cooking hob 1 to be installed in a socket 7 of the drawing plane

work 2 of an insert furniture 3 without causing a particular nuisance when the built-in cooking countertop 1 is placed above a drawer that slides inside the insert furniture 3 and under the work plane 2.

Likewise, the placement of the passage opening 13 of the power cable 8 in the additional wall 5e of the

housing 5 allows the built-in cooking hob 1 to be installed in a socket 7 of the drawing plane

work 2 of an insert furniture 2 without causing a particular nuisance when the built-in cooking counter 1 is placed above another household appliance 12, which can be a dishwasher or a baking oven, arranged inside the insert furniture 3 .

On the other hand, the additional wall 5e of the housing 5 that joins the lower wall 5a of the housing 5 to the rear side wall 5b of the housing 5 in an oblique direction allows the housing to be more rigid 5.

In one embodiment, the housing 5 is made from a sheet plate in which a first fold is formed in order to form the additional wall 5e of the housing 5 with respect to the bottom wall 5a of the housing 5 , and a second fold is formed in order to form the rear side wall 5b of the housing 5 with respect to said additional wall 5e.

Thus, the additional wall 5e of the housing 5 is obtained by succession of two folds in the sheet metal plate that forms the housing 5.

In the case where the housing 5 is made from a sheet metal plate, the passage opening 13 of the power cable 8 is made before folding the additional wall 5e of the housing 5 and the rear side wall 5b of the housing 5.

The passage opening 13 of the power cable 8 can be carried out in particular by drilling a plate plate forming the housing 5 of the built-in cooking hob 1.

The passage opening 13 of the power cable 8 is thus placed between the two folds of the sheet metal plate that forms the housing 5.

In another embodiment, the housing 5 is made of plastic material, in particular by molding.

In an embodiment such as that illustrated in Figures 2, 3 and 5, the additional wall 5e of the housing 5 joining the lower wall 5a of the housing 5 to the rear side wall 5b of the housing 5 according to a oblique direction extends over the entire width of the housing 5.

In another embodiment (not shown), the additional wall 5e of the housing 5 that joins the lower wall 5a of the housing 5 to the rear side wall 5b of the housing 5 in an oblique direction extends only through a part of the housing width 5. And the lower wall 5a of the housing 5 joins directly to the rear side wall 5b of the housing 5, preferably perpendicularly, according to at least another part of the width of the housing 5, and for example on both sides of the additional wall 5e of the housing 5 that joins the lower wall 5a of the housing 5 to the rear side wall 5b of the housing 5 in an oblique direction.

Preferably, the built-in cooking countertop 1 comprises a passage element 14 of the power cable 8, wherein the passage element 14 is arranged through the passage opening 13 of the power cable 8 placed on the additional wall 5e of the housing 5, and wherein a recess 15 is disposed inside the passage element 14 in order to guide the power cable 8 from inside the housing 5 to the outside of the housing 5.

Thus, the power cable 8 is disposed inside the passage element 14 located at the level of the passage opening 13 placed in the additional wall 5e of the housing 5 in order to protect the power cable 8 from the edge of the passage opening 13 placed in the additional wall 5e of the housing 5, and in particular to avoid damaging the power cable 8.

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In an embodiment such as that illustrated in Figure 6, the passage element 14 of the power cable 8 is made in the holder 16 of the power control card of the control unit 9.

In this case, the support 16 of the power control card of the control unit 9 is made of plastic material, and for example by molding.

In another embodiment where the housing 5 is made of plastic material, the passage element 14 of the power cable 8 is made in the additional wall 5e of the housing 5.

In another embodiment, the passage element 14 of the power cable 8 is fixed to the additional wall 5e of the housing 5, for example by means of elastic ratchet elements, or even by obstructing a groove placed in the contour of the passage element 14 of the power cable 8 at an edge of the additional wall 5e of the housing 5.

In one embodiment, the passage opening 13 of the power cable 8 placed in the additional wall 5e of the housing 5 partially extends into the lower wall 5a of the housing 5.

Thus, the passage opening 13 of the power cable 8 placed in the additional wall 5e of the housing 5 and extending partially in the lower wall 5a of the housing 5 allows the contact of the power cable 8 with the lower edge of the passage opening 13 that can damage the power cable 8.

In addition, the passage opening 13 of the power cable 8 placed in the additional wall 5e of the housing 5 and partially extending into the lower wall 5a of the housing 5 allows the passage element 14 to be placed through the passage opening 13 of the power cable 8, wherein the power cable 8 is in contact with the internal face of the recess 15 of the passage element 14.

On the other hand, in the case where the housing 5 is made from a sheet plate, and where the passage opening 13 of the power cable 8 is made before folding the additional wall 5e of the housing 5 and of the rear side wall 5b of the housing 5, the passage opening 13 of the power cable 8 placed in the additional wall 5e of the housing 5 partially extends into the lower wall 5a of the housing 5 in order to prevent formation of an aggressive angle at the level of the lower edge of the passage opening 13 connected to the folding area of the additional wall 5e of the housing 5 with respect to the lower wall 5a of the housing 5.

In an embodiment such as that illustrated in Figures 2 to 5, the additional wall 5e of the housing 5 that joins the lower wall 5a of the housing 5 to the rear side wall 5b of the housing 5 in an oblique direction It is an integral part of the housing 5.

In another embodiment (not shown), the additional wall 5e of the housing 5 that joins the lower wall 5a of the housing 5 to the rear side wall 5b of the housing 5 according to an oblique direction is realized by means of an element of step 14 of the power cable 8, wherein the passage element 14 of the power cable 8 is disposed through an opening placed in the bottom wall 5a of the housing 5 and in the rear side wall 5b of the housing 5, and wherein the passage element 14 of the power cable 8 comprises the passage opening 13 of the power cable 8 placed in the additional wall 5e of the housing 5, and wherein a recess 15 is disposed inside the passage element 14 in order to guide the power cable 8 from the inside of the housing 5 to the outside of the housing 5.

Thus, the power cable 8 is arranged inside the passage element 14 located at the level of the opening placed in the lower wall 5a of the housing 5 and in the rear side wall 5b of the housing 5, where the opening of step 13 of the power cable 8 is placed on one side of the passage element 14 which constitutes the additional wall 5e of the housing 5 in order to protect the power cable 8 from the edge of the opening placed in the bottom wall 5a of the housing 5 and on the rear side wall 5b of the housing 5, and in particular to avoid damaging the power cable 8.

The rear side wall 5b of the housing 5 is located at the level of the rear part of the housing 5 of the built-in cooking hob 1, where the rear part of the housing 5 is the part of the housing 5 furthest from the leading edge of the built-in cooking countertop 1 in front of which the user is placed to use said countertop 1.

The rear part of the housing 5 of the built-in cooking countertop 1 is usually arranged opposite to the control keypad 11 of said countertop 1.

In other words, the rear part of the housing 5 of the built-in cooking countertop 1 is arranged towards the rear panel 3a of the insert cabinet 3.

Preferably, the lower wall 5a of the housing 5 is perpendicular to the rear side wall 5b of the housing 5.

In a preferred embodiment, the direction of the additional wall 5e of the housing 5 with respect to the lower wall 5a of the housing 5 forms an angle ai in a range between 30 ° and 60 °, and preferably of the order of 45 °.

5 The direction of the additional wall 5e of the housing 5 with respect to the rear side wall 5b of the housing 5 forms an angle a2 in a range between 30 ° and 60 °, and preferably of the order of 45 °.

Advantageously, the addition of the angle ai formed between the additional wall 5e of the housing 5 and the lower wall 10 5a of the housing 5 and the angle a2 formed between additional wall 5e of the housing 5 and the rear side wall 5b of the housing 5 it constitutes a right angle, that is to say substantially equal to 90 °.

Thanks to the present invention, the additional wall of the housing that joins the lower wall of the housing to the rear side wall of the housing according to an oblique direction allows the power cable to be oriented to the outside of the housing according to a predetermined direction inclined with in order to facilitate the installation of the built-in cooking hob through an insertion opening of a work plane.

Naturally, the present invention is not limited to the embodiments described above.

Claims (3)

1. Built-in cooking hob (1) comprising a cooking plate (4), a housing (5), a control unit (9), at least one heating means, a power cable (8), sealing said cooking plate (4) an upper opening (6) of said housing (5), said housing (5) comprising at least one lower wall (5a) and side walls (5b, 5c, 5d), feeding said power cable ( 8) said control unit (9) and said at least one heating means from an external electrical power network, characterized in that said housing (5) comprises an additional wall (5e) that joins said lower wall (5a) of said housing (5) and said rear side wall (5b) of said housing (5), wherein said additional wall (5e) of said housing (5) extends in an oblique direction with respect to said lower wall (5a) of said housing (5) and with respect to said rear side wall (5b) of said housing (5), and wherein said additional wall (5e) of d The housing (5) comprises a passage opening (13) of said power cable (8). 2. Built-in cooking hob (1) according to claim 1, characterized in that said wall bottom (5a) of said housing (5) is perpendicular with respect to said rear side wall (5b) of said housing (5). twenty 25 Built-in cooking hob (1) according to claim 1 or 2, characterized in that the direction of said additional wall (5e) of said housing (5) with respect to said lower wall (5a) of said housing (5) forms an angle ( a1) in a range that extends between 30 ° and 60 °, and preferably of the order of 45 °. Built-in cooking hob (1) according to any one of claims 1 to 3, characterized in that the direction of said additional wall (5e) of said housing (5) with respect to said rear side wall (5b) of said housing (5) forms an angle (a2) in a range that extends between 30 ° and 60 °, and preferably of the order of 45 °. 5. Built-in cooking hob (1) according to any of claims 1 to 4, characterized 30 because said housing (5) is made from a sheet plate in which a first plate is formed fold in order to form said additional wall (5e) of said housing (5) with respect to said lower wall (5a) of said housing (5), and a second fold is formed in order to form said rear side wall ( 5b) of said housing (5) with respect to said additional wall (5e). Built-in hob (1) according to any one of claims 1 to 4, characterized because said housing (5) is made of plastic material. 7. Built-in cooking hob (1) according to any one of claims 1 to 6, characterized in that said hob (1) comprises a passage element (14) of said power cable (8), in 40 wherein said passage element (14) is disposed through said passage opening (13) of said cable of supply (8) placed in said additional wall (5e) of said housing (5), and wherein a recess (15) is arranged inside said passage element (14) in order to guide said power cable (8) from the inside of said housing (5) to the outside of said housing (5). 8. Built-in cooking hob (1) according to any of claims 1 to 7, characterized because said additional wall (5e) of said housing (5) joining said lower wall (5a) of said housing (5) to said rear side wall (5b) of said housing (5) according to an oblique direction extends throughout the entire width of said housing (5). 50. Built-in cooking hob (1) according to any of claims 1 to 7, characterized because said additional wall (5e) of said housing (5) joining said lower wall (5a) of said housing (5) to said rear side wall (5b) of said housing (5) according to an oblique direction extends only by a part of the width of said housing (5). 3 4