House penetration for routing at least one cable through a wall opening

Abstract

The invention relates to a house penetration (1) for passing at least one line (100) through a wall opening, comprising an anchor plate (3) which has a first reference surface (6) with a mounting interface (7) for a fitting (13), a fitting (13) which is attached to the mounting interface (7) and is designed to hold the line (100) in a fluid-tight manner, and a second reference surface (15), a sealing element (23) which is arranged between the anchor plate (3) and the fitting (13) and is designed to hold the line (100) in a fluid-tight manner, and - Clamping devices (21) which are designed to axially clamp the frame (13) and the anchor plate (3) together from an unclamped state to a clamped state, wherein the sealing element (23) between the frame (13) and the anchor plate (3) is axially compressed, where the first reference surface (6) has a first contour (K1), and the second reference surface (15) has a second contour (K2). It is proposed that in the unstressed state the second contour (K2) is different from the first contour (K1), so that a contour deviation (ΔK1) is formed between the first and second contours (K1, K2), and The trade frame (13) is designed to be deformable relative to the anchor plate (3) in such a way that a contour deviation (ΔK2) is formed in the tensioned state between the first and second contour (K1, K2) which is less than in the untensioned state.

Description

[0001] The present invention relates to a building penetration for passing at least one line through a wall opening, in particular a multi-utility penetration, wherein the building penetration has an anchor plate which has a first reference surface with a mounting interface for a tradesman's frame, a tradesman's frame which is attached to the mounting interface and is designed to hold the line in a fluid-tight manner, and a second reference surface, a sealing element which is arranged between the anchor plate and the tradesman's frame and is designed to hold the line in a fluid-tight manner, and clamping means which are designed to axially clamp the tradesman's frame and the anchor plate together from an unclamped state to a clamped state, wherein the sealing element is axially compressed between the tradesman's frame and the anchor plate, wherein the first reference surface has a first contour,and the second reference surface has a second contour.,

[0002] Building penetrations of the type described above are generally known. In the prior art, the seal located under the tradesman's frame, typically a rubber seal, represents resistance against the clamping direction when the tradesman's frame is axially clamped to the anchor plate, which exerts an increasing restoring force with increasing clamping. This creates a gap between the anchor plate and the tradesman's frame in the area where the rubber seal is in contact. In practical use, it has been observed that this inevitably occurring gap makes users unsure whether the clamping, and thus the desired sealing effect, is sufficient. To ensure that the sealing effect is sufficient, users then increase the clamping force by tightening the clamping devices even further, which places a high load on the seal and clamping device.In this case, in unfavourable situations, the clamping devices may tear out of the anchor plate, thus damaging the house penetration.

[0003] DE 199 36807 C1 relates to a device for the watertight insertion of cables into a pipe, which contains a pot-shaped housing that can be tightly connected to an end section of the pipe and has an end wall with several through-holes for the cables, which run through housing projections on the inner wall of the end wall and extend axially into the interior of the housing. The through-holes are each covered on the outside of the end wall by a cover element, which also has a through-opening, wherein each cover element can be tightly tightened against the end wall. Once a cable has been passed through the housing projection, a permanently elastic sealing compound is introduced into the remaining space. By tightening the cover element, which projects into this space with a pipe socket, the sealing compound is firmly pressed, so that the through-hole is sealed watertight.

[0004] WO 2006 / 076931 A1 relates to a method for transferring a predetermined force or pressure pattern to a lid element through the lid element to a second element with a flat or non-flat surface. According to a first method step, an optimized preforming shape of the lid element and / or the second element is produced. At least one of the elements is preformed according to the optimized preforming shape using a primary forming or forming technique. The lid element is connected to the second element after applying an external force at at least one predetermined force application point by mechanical fastening or by creating an adhesive bond between the elements.

[0005] Against this background, the invention was based on the object of further improving a house penetration of the type described above so that the disadvantages described above are overcome as far as possible. In particular, the invention was based on the object of further developing a house penetration of the type described above so that damage due to incorrect installation is less likely. Furthermore, the invention was based on the object of achieving this without negatively affecting the sealing ability of the sealing element.

[0006] The invention solves the underlying problem by specifying a house penetration with the features of claim 1. In particular, it is proposed that in the house penetration of the type initially described, the second contour is different from the first contour in the unclamped state, such that a contour deviation is formed between the first and the second contour, and the tradesman's frame is designed to be deformable relative to the anchor plate such that a contour deviation is formed in the clamped state between the first and second contour that is smaller than in the unclamped state. The invention is based on the recognition that the user responds primarily to visual indicators for his / her own sense of security regarding correct installation of the tradesman's frame.In the prior art, the user observed a contour deviation that only occurred with increasing clamping due to gap formation, and then tried to correct this contour deviation by further increasing the clamping force, which on the one hand was generally unsuccessful and on the other hand led to the risks described.

[0007] This is where the invention comes in. It deliberately equips the work glasses with a contour deviation relative to the anchor plate's reference surface, even in the unclamped initial state, which is reduced as the clamping increases. This psychological incentive for the user to correct the contour deviation during assembly is promoted. On the other hand, by reducing the contour deviation, the user is intuitively guided to recognize the clamped state. When the contour deviation is reduced to a sufficient degree, for example, to the point where the user can no longer visually detect the contour deviation, the clamped state is reached from the user's perspective.According to the invention, the clamped state is defined as the state in which the duct frame and the anchor plate are clamped together to such an extent that the seal located between the two components can exert the required sealing force against the pipe. The required degree of clamping depends on the diameter pairing between the sealing element on the one hand and the pipe on the other, and can be determined empirically in advance for each series.

[0008] Particularly preferably, the first contour and the second contour are configured to differ from one another in such a way that when the first contour is aligned with the second contour, i.e., when the contour deviation is reduced to zero, the necessary tension to achieve a tight seal between the work guard and the pipe is achieved. The risk of the user continuing the tensioning process beyond this state is minimized by the fact that the visual correspondence between the first and second contours in the tensioned state, relative to the untensioned state, signals to the user that sufficient tension has been achieved.

[0009] In a preferred development, the contour deviation in the unclamped state forms at least one gap with a gap width extending in the axial direction. Preferably, the contour deviation forms a gap on opposite sides of the tradesman's frame, preferably in those contour areas of the tradesman's frame in which the clamping elements are located, which partially runs along the tradesman's frame. In other words, the gap extends along the tradesman's frame with a gap length in the circumferential direction. The size of the gap allows the user to directly determine, visually and haptically, the strength of the clamping that has already been applied between the tradesman's frame and the anchor plate.

[0010] In a further preferred embodiment, the gap has a smaller gap width in the clamped state than in the unclamped state. Particularly preferably, the gap is closed in the clamped state. In other words, in this embodiment, the invention provides that the deformability of the work visor is adjusted such that the gap is closed when sufficient clamping has been achieved to achieve the required tightness.

[0011] In preferred embodiments, the contour deviation exists either in the form of a continuous curvature of the second reference surface, or in a region-specific curvature or buckling of the reference surface, so that the overall flexural rigidity of the workwear frame is a measure of the applied clamping force. In other words, the geometry of the workwear frame, as well as its material and structural design, influence the deformation behavior from the unclamped state to the clamped state in a very predictable and plannable manner.

[0012] In a further preferred embodiment, the second reference surface is curved or bent at least in sections in the unstressed state, and has a reduced curvature or bending in the stressed state.

[0013] Depending on the design of the tradesman's frame, the second reference surface can be a surface on the tradesman's frame facing away from the wall, or a surface facing the wall, which would then equally be a surface facing the anchor plate. In embodiments in which the tradesman's frame has a base body with essentially parallel top and bottom surfaces, both surfaces can also be used as reference surfaces for assessing the clamping condition.

[0014] If the second reference surface is a surface facing the anchor plate, in preferred embodiments, the second reference surface is preferably convexly curved. If the second reference surface is a surface facing away from the wall, i.e., also facing away from the anchor plate, in preferred embodiments, it is preferably concavely curved, either completely or in certain regions.

[0015] The invention is based on the principle that the lateral support, which represents the smaller component, is more easily deformable relative to the anchor plate. It is therefore preferred if the first reference surface associated with the anchor plate is flat in both the unclamped and clamped states. The deformation as a function of the clamping force then takes place exclusively, or at least predominantly, in the lateral support.

[0016] The required stiffness of the anchor plate in the area of ​​the first reference surface can be adjusted by the choice of material and / or by the structural design of the anchor plate in the area of ​​the mounting interface.

[0017] In a further preferred embodiment, the clamping means comprise two or more clamping screws, each of which engages the work glasses in a dedicated contour area, wherein the work glasses are designed to be deformable in the contour areas such that the second contour is brought closer to the first contour during the transition from the unclamped state.

[0018] In a further preferred embodiment, the contour regions of the workwear goggles are distributed along their circumference, so that contour regions and intermediate regions alternate along the contour of the workwear goggles, with the contour regions preferably extending outwards in a radial direction. Preferably, the intermediate regions are partially circular or at least substantially partially circular, and the contour regions, which are primarily deformed by means of the clamping screws, are formed on the outside of the workwear goggles in the form of cantilevers. This allows the partially circular region of the intermediate regions to be designed to be comparatively rigid, and the elastic deformation of the workwear goggles is concentrated primarily on the contour regions.

[0019] In a further preferred embodiment, the anchor plate has a first contact surface facing the sealing element, and the trades eyelet has a second contact surface facing the sealing element, wherein the anchor plate and the trades eyelet are designed to be rigid in the region of the contact surfaces relative to the contour regions.

[0020] The sealing element preferably has end faces configured to correspond to the first and second contact surfaces, with which it abuts the respective elements. In preferred embodiments, the sealing element, in the clamped state, seals not only against the pipe but also against the ductwork and the anchor plate.

[0021] In a preferred embodiment, the first and second contact surfaces are flat, both in the clamped and in the unclamped state.

[0022] In a further preferred embodiment, the sealing element has an axially extending sleeve body which is designed to deform radially inward upon axial compression.

[0023] The sealing element preferably has one or more, preferably circumferential, stiffeners and / or at least one circumferential deformation region, in particular between adjacent stiffeners, which is designed to be deformed radially inward upon axial compression. Particularly preferably, the sealing element has two or more such deformation regions and three or more circumferential stiffeners.

[0024] In preferred embodiments, the sealing element is inserted into a recess in the anchor plate, and the first contact surface is designed in the form of a circumferential stop within the recess. The clamping element is preferably designed to press the sealing element into the recess and thereby compress it axially, while the clamping element is clamped against the anchor plate. The amount of compression can be adjusted via the axial oversize that the sealing element has relative to the depth of the recess in the anchor plate. Adequate compression can be achieved independently of clamping if the clamping element is seated against the anchor plate in a stop position, so that the clamping only has to prevent an unintentional, automatic release of the clamping devices.The necessary strength of the axial clamping is ensured by tightening the clamping devices to such an extent that the contour deviation is reduced to a satisfactory level. The compression of the sealing element can thus be at least partially isolated from the extent of the clamping force of the clamping devices.

[0025] In a preferred embodiment, the work goggles are partially or entirely made of a polymer material, preferably a polyester material or a polyamide, in particular PA6, with a fiber content. The work goggles are preferably made of a polymer material as described above with a fiberglass content of up to 30%. This material has been shown to offer a good compromise between deformability and strength.

[0026] In a further preferred embodiment, the sealing element comprises or consists of an elastically deformable material, which preferably comprises or consists of rubber, more preferably synthetic rubber, even more preferably synthetic rubber with a saturated main chain, particularly preferably ethylene-propylene-diene rubber. Alternatively or additionally, the sealing element has a Shore A hardness in a range from 40 to 90, preferably 45 to 55.

[0027] In a further preferred embodiment, the workwear goggles have one or more material recesses in the contour region(s) that extend substantially transversely to the clamping direction. The material recesses transversely to the clamping direction increase the flexibility of the contour regions relative to the intermediate regions of the workwear goggles.

[0028] Further preferably, the material recess in the contour areas is formed as a recess, preferably interspersed with one or more stiffening elements. The stiffening elements can be designed as stiffening ribs and accordingly support the deformability characteristics during the clamping process.

[0029] The invention has been described above with reference to a first aspect, which relates to the building penetration itself. In a second aspect, the invention further relates to the use of a work guard in a building penetration for passing at least one line through a wall opening.

[0030] The invention achieves the object stated at the outset in relation to the first aspect in such a use with the features of claim 15. In particular, the use in a house lead-through is proposed, which comprises an anchor plate having a first reference surface with a mounting interface for a tradesman's frame, a sealing element arranged between the anchor plate and the tradesman's frame and configured to keep the line fluid-tight, and clamping means configured to axially clamp the tradesman's frame and the anchor plate together from an unclamped state to a clamped state, wherein the sealing element is axially compressed between the tradesman's frame and the anchor plate, wherein the tradesman's frame has a second reference surface, the first reference surface has a first contour, and the second reference surface has a second contour,wherein in the unstressed state, the second contour is different from the first contour, so that a contour deviation is formed between the first and second contours, wherein the tradesman's eyelet is attached to the mounting interface and used to hold the line in a fluid-tight manner such that the tradesman's eyelet is deformed relative to the anchor plate such that a contour deviation is formed in the stressed state between the first and second contours, which is smaller than in the unstressed state.

[0031] The invention utilizes the same findings and advantages in the second aspect as in the first aspect. The preferred embodiments of the house feedthrough of the first aspect are also preferred embodiments of the second aspect, and vice versa. Therefore, to avoid repetition, reference is made to the above explanations in this regard.

[0032] The invention is described in more detail below with reference to a preferred embodiment of the invention and the accompanying figures. Herein: Fig. 1 a schematic spatial exploded view of a house penetration according to a preferred embodiment, Fig. 2 the representation according to Fig. 1 in a partially sectioned view, Fig. 3 the house implementation according to the Fig. 1 and Fig. 2 with a cable passed through, Fig. 4 a schematic partial side view of the house penetration according to the Fig. 1 to 3 in a first assembly state, Fig. 5 the representation according to Fig. 4 in a second assembly state, and Fig. 6 a partially sectioned view of the house penetration in the state according to Fig. 5.

[0033] In Fig. 1 shows a building penetration 1 for leading a number of lines through a building wall. In particular, the building penetration 1 is a multi-service building penetration. The building penetration 1 has an anchor plate 3 which has a substantially cylindrical base body on which a flange 9 and a nozzle 11 are formed. The flange 9 is designed to rest against a wall surface, and the nozzle 11 is designed to be inserted into a core bore in the wall, which is not shown to simplify the illustration of the invention. The nozzle 11 is formed on a side 2 of the building penetration 1 facing towards the wall. On a side 4 of the building penetration 1 facing away from the wall, there is a substantially flat end face in which a plurality of recesses 5 for receiving the lines are arranged. The recesses 5 are continuous.For each of the recesses 5, the anchor plate 3 has a mounting interface 7 on the end face, which represents a first reference surface 6, which is configured to receive a respective tradesman's frame 13. The tradesman's frame 13 has a second reference surface 15 on a side facing the mounting interface 7, which is configured to engage the first reference surface 6. Details of the surface design are explained in more detail in the later figures.

[0034] The work frame 13 has, at opposite ends, corresponding to the mounting interface 7, contoured regions 19 that protrude radially outward from a substantially partially circular intermediate region 17. Clamping means 21a can be arranged on the contoured regions 19 and are designed to engage with corresponding clamping means 21b on the anchor plate 3 for axially clamping the work frame 13 against the anchor plate 3.

[0035] A sealing element 23 is interposed between the duct frame 13 and the anchor plate 3. The sealing element 23 is designed to be inserted into the recess 5 of the anchor plate 3 and to be axially clamped when the duct frame 13 is clamped to the anchor plate 3 in the direction of a clamping axis S, which at the same time essentially corresponds to the feedthrough direction. The details of the sealing element 23 are also discussed in more detail in the following figures.

[0036] The components from Fig. 1 are in Fig. 2 in a partially sectioned view. The recess 5 points from the first reference surface 6 in the direction of the clamping axis S at a depth t A a paragraph 24.

[0037] The sealing element 23 has in the direction of the clamping axis S essentially a sleeve shape, which has a length I Hbetween two contact surfaces 29, 31. The first contact surface 29 faces the work piece 13 and the second contact surface 31 faces the shoulder 24 in the recess 5. The shoulder 24 has a first contact surface 33 facing the sealing element 23, and the work piece 13 has a second contact surface 27 facing the sealing element 23. The second contact surface 27 and the corresponding contact surface 29 of the sealing element 23 are preferably flat and circumferential. Likewise, the first contact surface 33 and the corresponding contact surface 31 are preferably flat and circumferential. The components in Fig. 1 and Fig. 2 are shown in the unstressed state. The length I H of the sealing element 23 exceeds the depth t A in the anchor plate 3.

[0038] The sealing element 23 has a plurality of circumferential stiffening elements 35 on its outer side, and deformation sections 37 are formed between adjacent stiffening elements 35. The dimensioning of the sealing element 23 relative to the recess 5 results in a portion of the sealing element 23 still protruding from the recess 5 through the first reference surface 6 after the sealing element 23 has been inserted into the recess 5. In this state, when installed by placing the surfaces 27, 29 against one another, the work piece 13 is generally not yet in close contact with the anchor plate 3. To further approach and clamp the work piece 13 against the anchor plate 3, the clamping means 21a are then passed through corresponding through-openings 25 of the work piece 13 and engaged with the corresponding clamping means 21b in the anchor plate 3.By applying a clamping force, the joint 13 is then clamped against the anchor plate 3 in the direction of the clamping axis S, resulting in an axial compression of the sealing element 23. As a result of the axial compression of the sealing element 23, the material of the sealing element 23 deflects radially inward in the deformation areas 37 and, when the line is installed, leads to a fluid-tight fit against that line.

[0039] Preferably, with sufficient axial tension of the trades eyelet 13 with the anchor plate 3, the sealing element 23 simultaneously rests fluid-tight against the shoulder 24 in the recess 5, as well as against the contact surface 27 of the trades eyelet 13.

[0040] In Fig. 3 shows an example of an installation state of the house penetration 1, in which a cable 100 was led through the anchor plate 3 and its recess 5, as well as through the trades eyelet 13 and the (in Fig. 1 and Fig. 2) sealing element 23. The clamping means 21a, b are engaged with each other, and the clamping of the work frame 13 against the anchor plate 3 can take place. This is explained in the following Fig. 4, Fig. 5 is explained in more detail.

[0041] In the unstressed state according to Fig. 4, the trades eyelet 13 is already in contact with the anchor plate 3 in the intermediate region 17, so that a certain amount of compression of the sealing element 23 has preferably already taken place. However, the clamping force is not yet sufficient, which is easily recognized by the user because a contour deviation ΔK1 can be seen, especially in the opposite outer contour regions 19. The contour deviation ΔK1 arises because the first reference surface 6 has a first contour K1, which is flat in the present exemplary embodiment, while the trades eyelet has a second contour K2 on the second reference surface 15, which is not flat. In the exemplary embodiment shown, the entire trades eyelet 13 is slightly curved. The curvature leads to a gap 43 being formed, particularly in the contour regions 19, between the first reference surface 6 and the second reference surface 15, which gap has a direction in the clamping axis S (cf. Fig. 1) has a directed gap width of 45, which can be easily seen with the naked eye and possibly felt haptically, and is, for example, in the range of several millimeters.

[0042] In the contour areas 19, material recesses 39 are formed laterally in the work frame 13. These material recesses 39 are preferably formed as cutouts interspersed with one or more stiffening elements 41, ribs. The material recesses 39 ensure increased flexibility of the work frame 13 in the contour areas 19, and the stiffening elements 41, with appropriate expert design, ensure the necessary flexural rigidity. Because the contour areas 19 are further away from the first reference surface than the intermediate area 17, the unstressed state is clearly recognizable to the user.

[0043] A starting situation has now been created in which the user will attempt to improve the visually disadvantageous condition by tightening the clamping means 21 (a+b) in an attempt to close the gap 43. This will result in an approximation of the contour K2 to the contour K1, and when a sufficient approximation between K2 and K1 is achieved, i.e. when the gap is less or no longer visually perceptible, or in the best case is completely closed, a visually satisfactory condition is achieved for the user, which at least psychologically indicates to him that sufficient clamping has now taken place.

[0044] The deformation of the tool holder 13, which leads to the contour adjustment between K1 and K2, generates a sufficient counterforce that ensures a secure fixation of the clamping devices. The condition according to Fig. 5.

[0045] In Fig. 5 there is a contour deviation ΔK2 which is less than the contour deviation ΔK1 according to Fig. 4, and ideally reduced to zero. In this ideal case, the second contour K2 corresponds to the first contour K1 in the clamped state. The gap width 45 is reduced, ideally to a gap width of 0.

[0046] The clamping devices 21 (a+b) hold the work glasses 13 reliably to the anchor plate 3. The intermediate area 17 has been extended from Fig. 4 no longer significantly approach the anchor plate 3. By dimensioning the recess and the distances between the corresponding contact surfaces, a defined axial compression of the sealing element 23 is ensured, excessive tensioning is excluded, so that unwanted damage to the seal, the clamping devices 21 a, b or excessive compression can no longer occur. The pre-bending of the work piece 13 in its unstressed state according to Fig. 4 also prevents the user from visually undesiring the curvature of the work glasses in the “wrong” direction during tensioning, which could then lead to excessive tensioning when attempting to compensate.

[0047] Within the scope of the invention, it is fundamentally conceivable, and in preferred embodiments also feasible, for the tradesman's frame 13 to be arranged entirely outside the anchor plate 3. Alternatively, it is also conceivable for the tradesman's frame 13 to be inserted entirely within a correspondingly shaped recess in the anchor plate 3, in which case, ideally, the reference surface would not be the side of the tradesman's frame facing the anchor plate 3, but rather the side of the tradesman's frame 13 also facing away from the wall, the contour of which would then be compared with the contour of a reference surface on the side of the anchor plate also facing away from the wall. In general, those surfaces that are clearly visible to users and can be checked for optical conformity will be considered as reference surfaces.

[0048] In the Fig. 6 of the embodiment shown, the work piece 13 rests with its base body essentially on the outside of the anchor plate 3. The second sealing surface 27, which interacts with the sealing element 23, is according to Fig. 6 is formed on a sleeve-shaped projection 47 in an interior region of the work frame 13, which extends at least slightly into the recess 5 of the anchor plate 3. The depth of this projection 47 in the direction of the clamping axis S is one of several parameters that determines the extent of the axial compression of the sealing element 23 and can be selected accordingly by means of routine design. As a result of the assembly of the work frame 13 in the illustrated embodiment, the sealing element 23 has a compressed length I' H which is less than the unstressed initial length I H and preferably less than the depth t A between the first reference surface 6 and the shoulder 24 in the recess 5 of the anchor plate 3.

[0049] Alternative designs are of course conceivable and desirable, provided they also lead to correct clamping of the trades eyelet 13 and at the same time ensure sufficient compression of the sealing element 23 to fulfil its sealing functions. List of reference symbols 1 house penetration 2 wall-facing side 3 anchor plate 4 side facing away from the wall 5 Recess 6 first reference surface 7 Mounting interface 9 Flange 11 nozzles 13 Trades glasses 15 second reference surface 17 Intermediate area 19 Contour area 21 clamping devices 21a clamping screw 21b thread 23 Sealing element 24 paragraph 25 through openings 27 second contact surface, trades glasses 29 second contact surface, sealing element 31 first contact surface, sealing element 33 first contact surface, anchor plate 35 stiffening element 37 Deformation section 39 Material recess 41 Stiffening element 43 gap 45 gap width 47 Approach 100 lines S clamping axis t A depth I H Length, unbraced I' H Length, tense ΔK1 contour deviation, unclamped ΔK2 contour deviation, clamped K1 first contour, first reference surface K2 second contour, second reference surface

Claims

[1] House lead-through (1) for passing at least one line (100) through a wall opening, with - an anchor plate (3) which has a first reference surface (6) with a mounting interface (7) for a work spectacle (13), - a work goggle (13) which is attached to the mounting interface (7) and is designed to hold the line (100) in a fluid-tight manner and has a second reference surface (15), - a sealing element (23) arranged between the anchor plate (3) and the work frame (13) and designed to keep the line (100) fluid-tight, and - clamping means (21) which are designed to axially clamp the work glasses (13) and the anchor plate (3) together from an unclamped state to a clamped state, wherein the sealing element (23) between the work glasses (13) and the anchor plate (3) is axially compressed, wherein the first reference surface (6) has a first contour (K1), and the second reference surface (15) has a second contour (K2), characterized by , that in the unstressed state, the second contour (K2) is different from the first contour (K1), so that a contour deviation (ΔK1) is formed between the first and second contours (K1, K2), and the trades spectacles (13) are designed to be deformable relative to the anchor plate (3) in such a way that a contour deviation (ΔK2) is formed in the clamped state between the first and second contours (K1, K2) which is smaller than in the unclamped state. [2] House penetration (1) according to claim 1, wherein the contour deviation (ΔK1) in the unstressed state forms at least one gap (43) with a gap width (45) extending in the axial direction. [3] House penetration (1) according to claim 2, wherein the gap (43) in the clamped state has a smaller gap width (45) or is closed. [4] House penetration (1) according to one of the preceding claims, characterized by that the second reference surface (15) is curved or bent at least in sections in the unstressed state, and has a reduced curvature or bending in the stressed state. [5] House penetration (1) according to one of the preceding claims, characterized by that the first reference surface (6) is flat in the unstressed state and in the stressed state. [6] House lead-through (1) according to one of the preceding claims, wherein the clamping means (21) comprise two or more clamping screws (21a) which each engage the work glasses (13) in a dedicated contour region (19), and wherein the work glasses (13) are designed to be deformable in the contour regions (19) such that the second contour (K2) is brought closer to the first contour (K1) during the transition from the unclamped state. [7] House lead-through (1) according to one of the preceding claims, wherein the contour regions (19) of the trades eyelets (13) are arranged distributed along their circumference, so that contour regions (19) and intermediate regions (17) alternate along the contour of the trades eyelets (13), wherein the contour regions (19) preferably extend outwards in the radial direction. [8] House penetration (1) according to claim 6 or 7, wherein the anchor plate (3) has a first contact surface (33) facing the sealing element (23), and the work glasses (13) have a second contact surface (27) facing the sealing element (23), and wherein the anchor plate (3) and the trades glasses (13) are designed to be rigid in the area of ​​the contact surfaces (27,33) relative to the contour areas (19). [9] House lead-through (1) according to claim 8, wherein the two contact surfaces (27,33) are flat. [10] House penetration (1) according to one of the preceding claims, characterized by that the sealing element (23) has an axially extending sleeve body which is designed to deform radially inwards upon axial compression. [11] House penetration (1) according to claim 10, characterized bythat the sealing element (23) has one or more circumferential stiffeners (35), and / or at least one circumferential deformation region (37), in particular between adjacent stiffeners (35), which is designed to be deformed radially inwards upon axial compression. [12] House penetration (1) according to one of the preceding claims, wherein the sealing element (23): - an elastically deformable material which preferably comprises or consists of rubber, more preferably synthetic rubber, even more preferably synthetic rubber with a saturated main chain, particularly preferably ethylene-propylene-diene rubber; and / or - has a Shore A hardness in a range of 40 to 90, preferably 45 to 55. [13] House penetration (1) according to one of the preceding claims, wherein the trades eyelets (13) have one or more material recesses (39) in the contour region(s) (19) which extend substantially transversely to the clamping direction. [14] House lead-through (1) according to claim 13, wherein the material recess (39) is designed as a recess and is preferably penetrated by one or more stiffening elements (41). [15] Use of a tradesman's eyeglass in a house lead-through (1) for passing at least one line (100) through a wall opening, wherein the house lead-through - an anchor plate (3) which has a first reference surface (6) with a mounting interface (7) for a work spectacle (13), - a sealing element (23) arranged between the anchor plate (3) and the work frame (13) and designed to keep the line (100) fluid-tight, and - clamping means (21) which are designed to axially clamp the work glasses (13) and the anchor plate (3) together from an unclamped state into a clamped state, wherein the sealing element (23) is axially compressed between the work glasses (13) and the anchor plate (3), wherein the work glasses (13) have a second reference surface (15), the first reference surface (6) has a first contour (K1), and the second reference surface (15) has a second contour (K2), wherein in the unstressed state the second contour (K2) is different from the first contour (K1), so that a contour deviation (ΔK1) is formed between the first and second contour (K1, K2), wherein the trades eyelet is attached to the mounting interface (7) and used for fluid-tight holding of the line (100) in such a way that the trades eyelet (13) is deformed relative to the anchor plate (3) in such a way that a contour deviation (ΔK2) is formed in the clamped state between the first and second contours (K1, K2) which is smaller than in the unclamped state.

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