Installation box

Abstract

Control knob for operating a control device for a component of a hob system, with a mounting set (1) for mounting a mounting box in a recess (35) in a furniture panel (32; 32a), with 1.1 a mounting box for installation in the recess (35), comprising 1.1.1 a contact protection cup (9) with an electrical installation receiving space, 1.1.2 at least one external threaded web section (22) formed on the contact protection cup (9) for interacting with a fixing means (6) having at least one corresponding internal threaded web section (28) for fixing the contact protection cup (9) relative to the furniture panel (32; 32a), 1.1.3 at least one support projection (20) which is connected to the contact protection cup (9) and projects laterally from the contact protection cup (9) for support against the furniture panel (32; 32a), 1.2 at least one central piece (7) for insertion into the electrical installation receiving space, wherein the at least one central piece (7) is detachably connected to the installation box and is designed as an operating knob, and 1.3 a fixing means (6) for fixing the installation box relative to the furniture panel (32; 32a).

Description

The invention relates to a flush box for installing in a recess in a furniture panel. The invention is also directed to an assembly set for assembling the flush box in a recess in a furniture panel. The invention is also directed to an insert socket and a control knob for insertion into a recess in a furniture panel. The invention further relates to an arrangement of a flush box in a recess in a furniture panel.Flush boxes for installation in a furniture panel are generally known from the prior art. For example, DE 10 2011 053 486 A1 discloses an installation box for arrangement in a hollow wall. The installation box can be secured locally to the hollow wall by means of fastening screws and fastening clamps. In the mounted state, a spacer ring is seated on the installation box, the internal thread of which is connected to an external thread of the installation box. The spacer ring makes it possible to set a protrusion of the installation box with respect to the hollow wall. The assembly of this known installation box is cumbersome.Flush boxes for furniture panels are known, inter alia, from DE 20 2005 009 791 U1, U.S. Pat. No. 4,053,082 A, DE 20 2013 100 696 U1, DE 1 876 074 U and DE 198 25 584 B4.The object of the invention is therefore to provide an improved, in particular particularly assembly-friendly, built-in box. Furthermore, an assembly set for improved assembly of an installation box in a recess in a furniture panel is to be provided. Furthermore, an improved or extremely easy-to-assemble built-in socket is to be created. In addition, an improved operating knob is to be provided. An improved arrangement of a flush box in a recess in a furniture panel is also intended to be provided.These objects are achieved according to the invention by the features indicated in claims 1, 6, 10, 11 and 12.The core of the invention is that the contact protection cup is connected to at least one support projection for support with respect to the furniture panel and also has at least one external thread web section for interacting with a fixing means, which has at least one corresponding internal thread web section, for fixing the contact protection cup relative to the furniture panel, and that the cover element can be arranged in a contactless manner with respect to the outer surface of the furniture panel in order to cover the at least one support projection.The at least one external thread web section expediently forms an external thread. According to a further aspect of the invention, at least two externally threaded web sections arranged at a distance from one another on the circumferential side are present, which together form an external thread.It is expedient if the at least one external thread web section surrounds the electrical installation receiving space at least in regions.The electric installation accommodating space can accommodate, for example, a cable, a plug, a line connector, a socket insert, a socket or the like. More complex components, in particular electronic components, for example printed circuit boards with electronic circuits, in particular for controlling electrical devices, can also be arranged in the electrical installation receiving space.In the mounted state of the flush box or of the contact protection cup, the at least one support projection absorbs in particular the entire force for fixing the flush box in the furniture panel.According to a further aspect of the invention, the cover element for covering the at least one supporting projection of the flush box is designed such that it completely covers the supporting projection. It is in particular designed such that it projects beyond the supporting projection in the radial direction.The at least one supporting projection can prevent, in particular, the screen element exerting a contact pressure force on the furniture panel in the mounted state of the flush box.The blend element is preferably made of metal, in particular of stainless steel. It has in particular a ground and / or brushed surface. The surface of the blend element advantageously has a roughness depth in the range from 0.7 μm to 1.1 μm. It is in particular CNC-milled.According to a further aspect of the invention, the blend element has a thickness of a few millimeters, in particular in the range from 2 mm to 10 mm, in particular in the range from 3 mm to 5 mm. It advantageously has beveled edges. An inner dimension of the trim element advantageously corresponds substantially to a transverse dimension of the recess in the furniture panel.According to a further aspect of the invention, the at least one support projection is fixedly connected, in particular axially fixedly connected, to the contact protection cup. The at least one support projection has, in particular, a support surface on the rear side in the direction of view of the mounted flush box for support on the outside with respect to the furniture panel. The supporting surface can be supported directly or indirectly with respect to the furniture panel.It is advantageous if the at least one support projection extends overall at least for the most part circumferentially around the contact protection cup.The furniture panel has, for example, a thickness which is in the range from 10 mm to 40 mm. The furniture panel is preferably a furniture front of a piece of furniture, such as a kitchen or an integrated kitchen appliance, or a work surface, in particular a kitchen work surface.According to a further aspect of the invention, the contact protection cup is closed in particular in the radial direction. The contact protection cup preferably consists of a heat-resistant material, in particular of a refractory material. It can be made in particular of plastic.The contact protection cup is in particular moisture-proof. It is possible in particular to design the contact protection cup in such a way that it meets the requirements of a specific moisture protection type. The contact protection cup meets in particular the requirements of the moisture protection type IP44, in particular the moisture protection type IP66, wherein the IP code (International Protection Code) corresponds to the standard DIN EN 60529 in the version of September 2014.According to a further aspect of the invention, the contact protection cup is annular in cross section. Alternatively, it has an angular or oval outer contour.According to a further aspect of the invention, the contact protection cup has at least one, in particular rear-side, line passage for passing through at least one electrical connection line.It is advantageous if at least one sealing element, in particular a sealing ring, is arranged between the at least one supporting projection and the furniture panel. The at least one sealing element is preferably highly elastic and is expediently formed from a rubber material, polyethylene or polytetrafluoroethylene. Preferably, the at least one sealing element is formed from ethylene-propylene-diene rubber (EPDM). The at least one sealing element prevents, in particular, a penetration of liquid into the region between the flush box and the recess in the mounted state. It prevents, in particular, the penetration of dust or dirt into the region between the flush box and the recess. For this purpose, the at least one sealing element bears, in particular in a sealing manner, on the outside of the furniture panel and on the rear side of the at least one supporting projection. It preferably has an outer transverse dimension which is at most as large, in particular smaller than an outer transverse dimension of the trim element.According to a further aspect of the invention, the at least one central piece in the assembly set is configured, for example, as a socket, a data line socket, an electrical switch, an electrical operating element, an electrical switch, in particular an operating knob, in particular an electrical oven operating knob, and / or a loudspeaker.According to a further aspect of the invention, the at least one central piece has a display for reading a current state and / or a respective position.According to a preferred embodiment, the assembly set has, for example, more than one central piece. The central pieces can be replaceable in particular.The at least one sealing element in the discharge state, i.e. in the non-compressed state, preferably has a thickness of a few millimeters. The thickness of the at least one sealing element is in particular in the range from 0.1 mm to 1 cm. It is in particular at least 0.2 mm, in particular at least 0.3 mm, in particular at least 0.5 mm, in particular at least 1 mm, in particular at least 2 mm. This is preferably at most 8 mm, in particular at most 6 mm, in particular at most 4 mm. The assembly set can comprise a plurality of sealing elements, in particular with different thicknesses.The cover element preferably has a through opening which is adapted to an outer contour of the at least one central piece in a cover element receiving region of the at least one central piece. The cover element is preferably designed as a cover ring.In the mounted state, the screen element preferably has a predefined distance in the range from 0.05 mm to 5 mm, in particular in the range from 0.1 mm to 3 mm, in particular of less than 2 mm, in particular of at most 1 mm, from the outer surface of the furniture panel. The screen element can be arranged in particular in a contactless manner with respect to the outer surface of the furniture panel. According to a further aspect of the invention, a rotation prevention means is provided between the cover element and the at least one central piece. For example, at least one anti-rotation projection is formed on the at least one central piece for this purpose, which then interacts with at least one corresponding, in particular rear-side, anti-rotation recess on the cover element. The at least one anti-rotation projection on the at least one central piece and the at least one anti-rotation recess of the cover element are in particular adapted to one another in such a way that they then engage one another in a form-fitting manner. A reverse arrangement is alternatively possible.A rotation prevention can also be achieved by a rotationally asymmetrical, in particular oval, configuration of the passage opening of the blend element.According to a further aspect of the invention, there is a rotation prevention means between the at least one central piece and the contact protection cup.According to a further aspect of the invention, a socket of a socket insert is arranged on the central piece. The base is preferably replaceable. Thus, an adaptation to different types of plugs, in particular different country variants of plugs, is possible in a particularly simple manner.According to a further aspect of the invention, the assembly set is part of an operating knob. The operating knob can serve in particular for operating a control device for an electrical appliance, in particular a component of a hob system, for example a hob or a range extraction device.Further advantageous features of the invention are specified in the dependent claims.According to a further aspect of the invention, the at least one supporting projection is arranged at an outer end of the contact protection cup. This allows a substantially flush arrangement of the contact protection cup in the furniture panel. In particular, the at least one support projection is arranged at an open end of the contact protection cup.According to a further aspect of the invention, the at least one support projection is integrally connected to the contact protection cup. It can be produced extremely inexpensively. In particular, the at least one support projection and the contact protection cup are injection molded in one piece.According to a further aspect of the invention, the at least one supporting projection is designed as an annular web. This leads in particular to an extremely secure local fixing of the contact protection cup relative to the furniture panel. The annular web is preferably designed as a collar.According to a further aspect of the invention, the at least one external thread web section extends along a central axis of the flush box over an adaptation section having a length in the range from 15 mm to 60 mm. This allows a particularly simple and functionally reliable adaptation of the flush box to the respective furniture panel.According to a further aspect of the invention, the at least one central piece is detachably connected to the flush box. This allows simple replacement of the at least one central piece. For example, the at least one central piece and the installation box, in particular the contact protection cup, can be connected to one another in a form-fitting and / or force-fitting manner. Preferably, the at least one central piece can be latched to the flush box, in particular to the contact protection cup. Alternatively, for example, the at least one central piece and the installation box, in particular the contact protection cup, can be screwed together. Other connections are alternatively possible.According to a further aspect of the invention, the cover element can be fixed relative to the flush box by means of the at least one central piece. The cover element can be fixed in particular between the central piece and the supporting projection. It can be pressed against the support projection from the outside, in particular by means of the central piece, and thus can bear frictionally against the support projection. Advantageously, the fixed screen element is then fixed axially and / or rotationally fixed, in particular non-rotatably, relative to the mounting box.According to a further aspect of the invention, the fixing means is designed as a union nut for screwing onto the flush box into different support positions for rear support relative to the furniture panel. This allows simple and tool-free installation and / or dismantling of the flush box. It is advantageous if the union nut has at least one engagement surface on the outside for, in particular, manual, engagement with the union nut or for applying a torque to the union nut. The union nut advantageously has engagement ribs or webs for this purpose.The union nut advantageously has at least one internal thread web section which is designed to be complementary to the at least one external thread web section of the contact protection cup. The at least one internal thread web section preferably forms an internal thread.The union nut preferably has a clamping surface for bearing on the inside against the furniture panel. The clamping surface can bear directly or indirectly there. The clamping surface in the assembled state advantageously faces the supporting surface of the at least one supporting projection.In the assembled state, the contact protection cup and the union nut are engaged with one another or in a screw connection. The union nut is advantageously fixed in its respective supporting position along the contact protection cup. Depending on the spin-on path of the union nut on the contact protection cup, the distance between the at least one support projection and the union nut or the assembly set can thus be adapted to the respective furniture panel.According to a further aspect of the invention, the operating knob comprises a removable operating ring. The operating ring can be latched in particular to the flush box.The operating ring is rotatable in particular relative to the mounting box.According to a further aspect of the invention, the operating ring is ball-mounted. The balls of the ball bearings can be arranged in particular in blind-hole-like bores. They can be pressed outwards, in particular against the inside of the operating ring, in particular by means of springs. By means of the spring tension, in particular the spring hardness, the pull-off force required for pulling off the operating ring can be adjusted.According to a further aspect of the invention, control electronics, in particular in the form of an electronic circuit, are arranged in the electrical installation receiving space of the contact protection cup.According to a further aspect of the invention, the blend element is designed as a power stage collar. It can be provided in particular with a label for displaying different power levels, which can be adjusted by different positions of the operating knob.According to a further aspect of the invention, the supporting projection of the contact protection cup can also be designed as a power step cuff.Alternatively, the operating ring can also be designed as a power stage collar. It is possible in particular to accommodate a scaling on the operating ring.According to an alternative, the power stage collar is designed and / or arranged in such a way that it is held, in particular fixed, between the supporting projection and the furniture panel. In this case, the supporting projection is preferably covered by the operating ring. In other words, the operating ring itself can serve as a cover.According to a further aspect of the invention, the central cover of the operating element can be provided with a coating, in particular a coating for preventing fingerprints. It can be coated in particular with a paint suitable for this purpose.According to a further aspect of the invention, the furniture panel has a base body, an outer layer, a first cutout formed in the base body, and a second cutout formed in the outer layer, wherein the contact protection cup is accommodated in the first cutout, the at least one support projection is supported on the outside on the base body and the second cutout laterally surrounds the at least one support projection at least in regions. This is firstly extremely appealing visually, and secondly a flush arrangement of the flush box in the furniture panel is thus possible.The base body is preferably formed from wood and / or plastic.The outer layer arranged on the base body can be made in particular of a brittle and / or a sensitive material. It can be formed in particular from glass, ceramic, natural stone or the like. In principle, the outer layer can also be formed integrally with the base body. In this case, it merely forms the outer layer of the base body.The first recess advantageously penetrates the main body completely.The second recess advantageously penetrates the outer layer completely. The second recess advantageously has a greater transverse dimension than the first recess. The difference in the transverse dimension of the two recesses is in particular at least twice as large as a radial extent, i.e. a width, of the supporting projection. The difference lies in particular in the range from 0.5 cm to 5 cm, in particular in the range from 1 cm to 3 cm. It is expediently bounded by the base body. The second recess is arranged in particular concentrically with respect to the first recess. The second recess preferably has a depth in the range from 0.1 mm to 1 cm, in particular in the range from 0.5 mm to 0.8 cm, in particular in the range from 1 mm to 5 mm. A wall of the outer wall delimiting the second recess preferably runs spaced apart from, but adjacent to, the at least one supporting projection.The recesses expediently open into one another. They are arranged quasi one inside the other. In particular, the recesses are cylindrical.The recesses form on the base body an abutment shoulder which is set back with respect to an outer surface of the furniture panel.By means of the recesses, it is possible to arrange the flush box in the furniture panel in such a way that it is free of contact with the outer layer. In particular, the supporting projection can be free of contact with the outer layer.In particular, the cover element can be arranged in a contact-free manner with respect to the outer layer.Further details and details of the invention are evident from the description of the socket, in particular the socket, and the operating knob on the basis of the figures. The following are shown: FIG. 1 is an exploded view of a mounting set according to a first alternative, FIG. 2 is an exploded view of the assembly set shown in FIG. 1 and a furniture panel for receiving the assembly set, FIG. 3 is a longitudinal section through an assembly according to the invention including the assembly set shown in FIG. 1, FIG. 4 shows a longitudinal section corresponding to FIG. 3, according to a further alternative of the assembly set, FIG. 5 shows a longitudinal section corresponding to FIG. 3, according to a further alternative of the assembly set, and FIG. 6 is an exploded view of the alternative shown in FIG. 5.In the following, a first alternative of a mounting set 1 is described with reference to FIGS. 1 to 3.The assembly set 1 comprises a contact protection in the form of a contact protection cup 9 and a fixing means 6, in particular in the form of a ring element which can be screwed onto the contact protection cup 9.In addition, the assembly set 1 shown in FIGS. 1 to 3 comprises an installation socket 2 and a cover element 3.Furthermore, the assembly set 1 shown in FIGS. 1 to 3 comprises a sealing element 4 and a crown disk 5.The built-in socket 2 has a central piece 7 and a base 8. The base 8 is connected to the central piece 7. The base 8 and the central piece 7 are designed to fit each other.The base 8 is surrounded by the contact protection cup 9. The contact protection cup 9 defines an electric installation accommodation space. The contact protection cup 9 delimits the electric installation accommodation space, in particular in the radial direction with respect to a central axis 17.The base 8 and the central piece 7 are in particular replaceable. In the mounted state of the mounting set 1, it is electrically connected to an electrical domestic line.The center piece 7 to which the socket 8 is fixed in the assembled state of the built-in socket 2 defines a plug receiving space 10 which is open toward the front. The plug receiving space 10 is delimited laterally by a delimiting wall 11 which is substantially hollow-cylindrical and has two mutually opposite recesses 12 for receiving limbs 13 of a protective contact bracket. The legs 13 form ground contacts or are electrically conductively connected to ground contacts. The plug receiving space 10 is also spatially delimited by an inner base 14 which has two openings for receiving plug pins of a plug. Between the openings there is a fastening opening in the inner base 14, which allows the reception of a fastening screw for fastening the base 8 to the central piece 7.The center piece 7 further has a retaining web 15 at the front, which projects radially outwards from the boundary wall 11 and is annular.In addition, the central piece 7 has two latching bodies 16 which are arranged opposite one another and are designed to be resilient. Each latching body 16 has a radially outwardly facing latching nose with a latch retaining surface. A different number and arrangement of the latching bodies 16 is alternatively possible.The blend element 3 is of annular design. In the assembled state of the assembly set 1, the cover element 3 surrounds the central piece 7 in the radial direction. It bears on the rear side on the retaining web 15 in the direction parallel to a central axis 17 of the assembly set 1.The contact protection cup 9 has a circumferential wall 18 which is substantially circumferentially closed and of hollow cylindrical design.Furthermore, the contact protection cup 9 has a cup base 19 which closes the contact protection cup 9 on the rear side. In the cup base 19, at least one line passage for passing through an electrical connection line is formed. The cup bottom 19 is substantially circular.At the open end of the contact protection cup 9, a support projection 20 protrudes radially outwards from the circumferential wall 18, which is designed as an annular web and is connected integrally to the contact protection cup 9. The support projection 20 has a rear support surface 21 facing the cup bottom 19, and an outer diameter DAA of the support projection 20 is smaller than an outer diameter DAB of the trim member 3.On the outside of the circumferential wall 18, two externally threaded web sections 22 are formed which are arranged at a distance from one another on the circumferential side and together form an external thread. In each external thread web section 22 of the socket 2 there are a plurality of external thread webs 23 running parallel to one another. Each external thread web section 22 extends along the central axis 17 over a large part of the circumferential wall 18 over an adjustment section sa. The adaptation section sa advantageously has a length in the range between 15 mm and 60 mm.The circumferential wall 18 also carries two latching openings 24, which are formed corresponding to the latching bodies 16. In the assembled state of the assembly set 1, the latching bodies 16 engage latchingly in the latching openings 24, as a result of which the central piece 7 and the contact protection cup 9 are firmly but releasably connected to one another. The central piece 7 is then partially located in the contact protection cup 9. the base 8 is then completely accommodated in the contact protection cup 9, which thus surrounds an electrical installation receiving space.Furthermore, at least one guide means is provided on the inside in / on the circumferential wall 18 and / or in / on the central piece 7, which guide means prevents a relative rotational movement between the central piece 7 and the contact protection cup 9 in the assembled state of the assembly set 1.The sealing element 4 is designed as a sealing ring. In the assembled state of the assembly set 1, the sealing element 4 is seated on the contact protection cup 9 and is arranged adjacent to the supporting projection 20. The sealing element 4 advantageously has an outer diameter DAD which is at most as large as the outer diameter DAB of the blend element 3. The outer diameter DAD of the sealing element 4 is preferably somewhat smaller than the outer diameter DAB of the blend element 3.The crown disk 5 is formed from a metal material and has a crown ring 25 with radially protruding locking bodies 26. Furthermore, the crown disk 5 has two rearwardly projecting fixing arms 27.The fixing means 6 is designed as a union nut. It thus has an internal thread on the inside, which is formed complementary to the external thread of the contact protection cup 9 and by internal thread webs 29 arranged at a distance from one another on the circumferential side. The internal thread webs 29 are located in internal thread web sections 28.In the assembled state of the assembly set 1, the fixing means 6 is screwed onto the contact protection cup 9. The external thread of the contact protection cup 9 and the internal thread of the fixing means 6 are thus in screw connection with one another. Depending on the path of the fixing means 6 to be screwed onto the contact protection cup 9, the distance between the fixing means 6 and the supporting projection 20 is adjusted. The fixing means 6 has a front clamping surface 31 facing the supporting projection 20, and the crown disk 5 rests with its crown ring 25 on the clamping surface 31 and is held on the fixing means 6 via its fixing arms 27.On the outside, the fixing means 6 has engagement ribs 30, which extend parallel to the central axis 17.As mentioned, the assembly set 1 is provided for mounting the built-in socket 2 in a furniture panel 32 which is shown in FIG. 2. The furniture panel 32 has a total thickness d ges in the range from 5 mm to 50 mm, in particular in the range from 10 mm to 40 mm, in particular in the range from 13 mm to 36 mm. Other dimensions are in principle likewise possible.The furniture panel 32 has a base body 33 and an outer layer 34. For the arrangement of the built-in socket 2 in the furniture panel 32, a cylindrical mounting recess 35 is formed, which fully penetrates both the base body 33 and the outer layer 34. The diameter of the mounting recess 35 is in particular in the range from 50 mm to 51 mm. Another diameter is also possible.The assembly of the built-in socket 2 will also be described in more detail below with reference to FIG. 3.The contact protection cup 9 is introduced into the mounting recess 35 from the outside via the outer layer 34, wherein the cup bottom 19 thereof is leading. In the completely inserted state of the contact protection cup 9 into the mounting recess 35, the supporting surface 21 faces the outer layer 34. The support surface 21 is then arranged adjacent to the outer layer 34.The sealing element 4 is seated between the supporting surface 21 and the outer layer 34, which sealing element in particular enables a sealed arrangement of the built-in socket 2 in the furniture panel 32. For this purpose, the sealing element 4 sealingly abuts the outer layer 34 and the supporting surface 21.The central piece 7 can already be latched to the contact protection cup 9, which central piece carries the base 8, as mentioned. Alternatively, the central piece 7 is now inserted into the contact protection cup 9 and fixed there in a latching manner.The cover element 3 sits between the support projection 20 and the retaining web 15 and thus covers the support projection 20 and the sealing element 4. the retaining web 15 engages radially on the inside over the cover element 3, so that it is locally fixed there.To fix the built-in socket 2 in the furniture panel 32, the fixing means 6 is screwed onto the region of the contact protection cup 9 which is rearward with respect to the base body 33. The screwing on of the fixing means 6 is effected manually. In particular, a corresponding torque is applied manually via the engagement ribs 30 to the fixing means 6 relative to the contact protection cup 9. The screwing movement of the fixing means 6 relative to the contact protection cup 9 leads to a displacement of the fixing means 6 along the contact protection cup 9. The fixing means 6 is screwed onto the contact protection cup 9 until the clamping surface 31 is arranged adjacent to the base body 33 and the crown washer 5 is pressed against the base body 33 from behind by the fixing means 6. The clamping surface 31 can also rest on the rear side of the base body 33. The crown disk 5 thus prevents undesired detachment or turning of the fixing means 6 from the contact protection cup 9. The same applies analogously to disassembly.An embodiment without crown disk 5 is alternatively possible. The clamping surface 31 then abuts the base body 33.The support projection 20 is then supported with respect to the outer layer 34. The screen element 3 is held at a distance from the furniture panel 32. It is not supported with respect to the furniture panel 32 and is thus held free of stress with respect to the furniture panel 32.As used herein, the terms "front", "rear", "rear" or the like refer in particular to a viewing direction of a user to an arrangement mounted as intended from the outside.In the following, with reference to FIG. 4, an alternative arrangement of the built-in socket in a furniture panel is described. Identical parts are given the same reference numerals as in the previous embodiment. Functionally identical, but structurally different, parts are given the same reference numerals with a suffix "a".In contrast to the previous embodiment, to the description of which reference is hereby made, the furniture panel 32 ais embodied differently. In the outer layer 34a there is an outer recess 36 which is cylindrical and passes completely through only the outer layer 34a.The outer recess 36 is arranged concentrically with the mounting recess 35 in the base body 33. It has a larger diameter than the mounting recess 35 and has a depth in the direction of a surface normal to the outer layer 34 ain the range from 0.1 mm to 1 cm, in particular in the range from 0.5 mm to 0.8 cm, in particular in the range from 1 mm to 0.5 cm. The diameter of the outer recess 36 is in particular in the range from 65 mm to 68 mm. Another diameter is also possible.Between the mounting recess 35 and the outer recess 36, which is blind hole-like, there is an abutment shoulder on the base body 33, which shoulder in particular forms an abutment or support surface for the support projection 20. The abutment shoulder is thus recessed relative to the outer surface of the outer layer 34a.The outer recess 36 is dimensioned such that in the mounted state of the built-in socket 2 the sealing element 4 and the supporting projection 20 are accommodated. The outer layer 34 athus surrounds the sealing element 4 and the supporting projection 20.In the mounted state of the built-in socket 2, the sealing element 4 is pressed from the outside against the base body 33 by the supporting projection 20. The contact shoulder can in particular absorb the entire force fixing of the contact protection cup 9. The outer layer 34 acan thereby remain free from mechanical stresses. It is possible in particular to prevent the built-in socket 2, in particular its cover element 3, from exerting a contact pressure on the outer layer 34 aof the furniture panel 32 a.The contact pressure is thus transmitted exclusively to the base body 33. Loads on the outer layer 34 acan be reduced, in particular completely avoided.The trim element 3 covers the entire outer recess 36 and is advantageously arranged at a distance from the outer layer 34 aand the base body 33, so that the trim element 3 itself remains stress-free. It is thus arranged in a contactless manner with respect to the outer layer 34 aand the base body 33. The outer recess 36 is thus also covered.In the following, with reference to FIGS. 5 and 6, a further arrangement of a flush box in a furniture panel is described. Identical parts are given the same reference numerals as in the first embodiment, to the description of which reference is made. Functionally identical, but structurally different, parts are given the same reference numerals with a "b" arranged downstream. In this alternative, the flush box forms a component of an operating or actuating device.In this embodiment, an operating knob 48 is connected to the contact protection cup 9, which is designed as an annular body. The operating knob 48 protrudes forwards with respect to the furniture front 32 and is rotatable in latching stages with respect to the contact protection cup 9 for setting various power levels of a cooker and / or oven. According to a preferred embodiment, it bears a power level inscription.The contact protection cup 9 contains operating electronics. In the electric installation receiving space of the contact protection cup 9, in particular, electric lines and / or data lines and / or electronic components, in particular a printed circuit board 45, are arranged. Electronic circuits, which can form a control device, are arranged in particular on the printed circuit board 45.The operating knob 48 is seated on a power step collar 39, which is in turn seated on the outside of the furniture front 32 and is annular.The supporting projection 20 of the contact protection cup 9 is supported against the power stage collar 39 in the assembled state of the contact protection cup 9. It is blocked by the operating knob 48. The control knob 48 thus forms a facing element for facing the supporting projection 20.Two connection sockets 40 are located on the rear side of the contact protection cup 9. the connection plug 40 is in particular a standardized socket, in particular an RJ (registered jack) socket, for example an RJ45 socket.The ring body of the operating knob 48 is removable. It can be latched in particular to the contact protection cup 9. For this purpose, latching means in the form of spring-mounted balls 42 are provided.Signals, in particular control signals from the control knob 48, can be transmitted via the connection sockets 40 in a signal-transmitting manner to further electrical components, in particular to hobs, extractor hood devices or to a control unit for such components.The contact protection cup 9 with the electronics integrated therein forms together with the operating knob 48 an operating or actuating device, in particular for arrangement in a furniture front. In part, the operating device is also referred to as an operating knob overall.According to a further alternative, the power stage collar 39 forms a facing element for facing the supporting projection 20.

Claims

Operating knob for operating a control device for a component of a hob system, having an assembly set (1) for mounting an installation box into a recess (35) in a furniture panel (32; 32a), having 1.1 an installation box for installation into the recess (35), comprising 1.1.1 a contact protection cup (9) having an electrical installation receiving space, 1.1.2 at least one external thread web section (22) formed on the contact protection cup (9) for interaction with a fixing means (6) having at least one corresponding internal thread web section (28) for fixing the contact protection cup (9) relative to the furniture panel (32; 32a), 1.1.3 at least one supporting projection (20) which is connected to the contact protection cup (9), and of the contact protection cup (9) for support relative to the furniture panel (32; 32a), 1.2 at least one central piece (7) for insertion into the electrical installation receiving space, wherein the at least one central piece (7) is detachably connected to the flush box and is designed as an operating knob, and 1.3 a fixing means (6) for fixing the flush box relative to the furniture panel (32; 32a).Control knob according to claim 1, characterised in that a printed circuit board (45) with an electronic circuit is arranged in the electric installation receiving space.Operating knob according to claim 1 or 2, characterised in that the at least one support projection (20) is integrally connected to the contact protection cup (9).Control knob according to one of the preceding claims, characterized in that the at least one supporting projection (20) is designed as an annular web.Control knob according to one of the preceding claims, characterized in that the at least one external thread web section (22) extends along a central axis (17) of the flush box over an adjustment section (sa) having a length in the range from 15 mm to 60 mm.Operating knob according to one of the preceding claims, characterized in that at least one sealing element (4) is arranged between the at least one supporting projection (20) and the furniture panel (32; 32a).Control knob according to one of the preceding claims, characterized bya screen element (3; 7b) for concealing the at least one supporting projection (20) of the flush box.Operating knob according to one of the preceding claims, characterized in that the contact protection cup (9) has a cup base (19) with at least one line passage for passing through an electrical connection line.Control knob according to claim 7 or 8, characterised in that the screen element (3) can be fixed relative to the flush box by means of the at least one central piece (7).Control knob according to one of the preceding claims, characterized in that the fixing means (6) is designed as a union nut for screwing onto the flush box into different supporting positions for rear-side support with respect to the furniture panel (32; 32a).Operating knob according to one of the preceding claims, characterized in that the central piece (7) has a display for reading a current state.Operating knob according to claim 8, characterised in that the central piece (7) and the contact protection cup (9) are screwed together.Arrangement of an insert box in a recess (35) in a furniture panel (32; 32a) by means of the operating knob according to one of Claims 7 to 10, wherein the screen element (3; 7b) is held free of stress relative to the furniture panel (32; 32a), characterized in that the furniture panel (32a) has a base body (33), b) an outer layer (34a), c) a first recess (35) formed in the base body (33), and d) a second recess (36), e) formed in the outer layer (34a), wherein the contact protection cup (9) is accommodated in the first recess (35), f) wherein the at least one support projection (20) is supported on the outside on the base body (33), and g) wherein the second recess (36) laterally surrounds the at least one support projection (20) at least in regions.

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