EP2796634B1 - Modular insulation material holder - Google Patents

Description

The present invention relates to a device for fastening an insulation panel to a substructure, in particular a modular insulation holder for fixing an insulation plate to a substructure.

In today's buildings, thermal insulation plays an ever-increasing role. Especially in the field of thermal insulation systems for insulating building walls. The insulating material is fixed in the form of plates on the existing wall surface. From the prior art, a plurality of retaining elements for the attachment of such insulation panels on the wall surface are known, for example EP 1 318 250 B1 , These holding elements serve to fix the insulation board to a substructure, for example, the building wall itself. In the known retaining elements, a hole is first drilled through the insulation board into the substructure and then the retaining element is introduced into the wellbore and secured in the substructure to fix the insulation board. The known holding elements in this case usually have a pressure plate, which merges into a dowel shaft wherein the dowel shaft is inserted into the drilled borehole until the pressure plate comes to rest on the insulating board. The pressure plate has a larger diameter or cross section than the dowel shaft. Subsequently, a spreading element is introduced into the dowel shaft. In this case, one end of the expansion element is preferably designed such that it can spread the dowel shaft in the area in which the dowel shaft is in the substructure, to secure the retaining element in the substructure and to fix the insulation board to the substructure. The spreader itself is either hammered or screwed. Spreading means thereby the widening of the diameter / cross section of the dowel shaft over at least a part of the dowel shaft of the borehole in the substructure is located so that a clamping force between the flared Dübelschaft and the borehole is made in the substructure. Only when overcoming this clamping force, the holding elements can again pull out of the borehole, so that the holding element provides just this clamping force as a holding force.

But there are also holding elements are known which do not have a dowel shaft, but in which the pressure plate itself, the spreader is arranged and the dowel is inserted separately into the borehole, such as in DE 79 32 608 U1 described. To fix the insulation board by means of such a holding element first a hole in the substructure - in the building wall / building wall / wall / Ständerwerk - drilled through the insulation board. Subsequently, only the separate dowel is introduced into the well and then the spreader is placed thereon with pressure plate in the dowel. With the help of the expansion element can then be dowel, which is located in the substructure, are spread, creating an anchorage in the substructure is created. For this purpose, the dowel, for example, a spreading zone, which can be widened by the introduced expansion element, whereby a deadlock is generated in the substructure. This jamming generates a clamping force, whereby an extraction of the retaining element from the borehole is again possible only when overcoming this clamping force, so that the retaining element just provides this clamping force as a retaining force.

Alternatively, however, spreading elements are also known which, like screws, can be screwed directly into an existing substructure without a dowel having to be introduced. An example of this are wood screws.

In order to press the insulation board to the substructure, the pressure plate is provided in the known holding elements. The pressure plate is usually firmly connected to one end of the expansion element and thus has a defined distance from the other end of the expansion element, which for fixing in the substructure, for example by widening a dowel is used. When the expansion element is driven into the substructure, either by driving the expansion element into the dowels located in the substructure or by screwing into the substructure, the pressure plate is pressed against the insulation board and exerts a force on them in the direction of the substructure and presses them the substructure. The pressure is generated by the fact that the expansion element is driven into the substructure, so that the distance between the pressure plate and substructure is lower. This pressing the insulation board against the substructure can also be referred to as holding, wherein the pressure plate can also be referred to as a holding plate, which holds the insulation board accordingly to the substructure.

However, such holding elements have the disadvantage that for different insulation thicknesses and different holding elements must be kept. Furthermore, different holding elements must be kept for different circumstances, for example, different pressure plate sizes, different spreading elements etc .. This means that a variety of different holding elements must be kept on the site, which in turn means that transport and storage costs incurred, once to to transport the holding elements to the construction site and on the other to keep them in stock on the site or just in stock. There are also known modular holding elements in which the expansion element and the pressure plate are separate and can be assembled at will, such as in DE 10 2004 005582 A1 and EP 2 068 007 A2 described.

DE 10 2004 005582 A1 discloses an apparatus for securing an insulation panel to a substructure having the features of the preamble of claim 1.

It is therefore the object to provide a modular device - a modular holding element - in which the above-mentioned disadvantages do not occur.

This object is achieved by the device according to the independent claim.

The device according to the invention for fastening an insulation panel to a substructure has an expansion element and a pressure plate. The expansion element has two opposite ends, wherein the one end is configured for fixing the expansion element in the substructure. For this purpose, this end may for example be designed to cooperate with a dowel located in the substructure or the end may have a thread which can intersect in the substructure. According to the invention, the other end of the expansion element with the pressure plate rotatably connected or the pressure plate rotatably connected to this end of the expansion element, so that torque can be transmitted from the expansion element on the pressure plate or from the pressure plate to the expansion element. Both components - spreader / pressure plate - are thus designed such that they are rotatably connected to each other. This means that the components are previously present as two separate components and only when they are connected represent a component, but which consists of two parts which are rotatably connected to each other. Torque in this sense means that torque can be transferred from one to the other component. A torque transmission from one to the other component may be advantageous if, for example, the pressure plate is configured with at least one means for cutting and / or milling in the insulation board. For example, when the pressure plate is recessed in the insulation board to be arranged and the pressure plate by rotation in the insulation board cutting and / or milling should. For this, the pressure plate must be turned. But this is only possible if torque can be transmitted from a setting tool, not only on the spreader, but also on the pressure plate.

The non-rotatable connection between the expansion element and the pressure has the advantage that the device according to the invention is modular, the individual components can thus be adapted to the situation-dependent conditions. Thus, for example, the same pressure plate with different lengths and / or differently designed spreading elements can be used. But it is also possible to connect different pressure plates with the same type of spreading elements. This modularity of the device according to the invention has the advantage that the storage can be minimized on the construction sites and further that the inventive device Can be packaged smaller than is the case with conventional holding elements, so that packaging and transport costs can be saved.

In a preferred embodiment of the device according to the invention, the rotationally fixed connection between the expansion element and the pressure plate can be a releasable rotationally fixed connection, ie a reversible connection. This has the advantage that when the wrong type of pressure plate has been connected to the expansion element, the connection can be released again, and the components can be reused. The person skilled in many ways are known to create a non-rotatable but releasable connection between two components.

In a preferred embodiment of the device according to the invention, the spreader element has a head on the end rotatably connectable to the pressure plate, ie a region which differs from the remaining cross section of the spreader element and which can interact with a receptacle on the pressure plate to produce the rotationally fixed connection. The receptacle can be configured, for example, such that when the head of the expansion element contacts the pressure plate, the head is at least partially surrounded in a form-fitting manner by the receptacle. Such a rotationally fixed connection between the two components can be realized for example by an at least partially opposite corresponding configuration of at least partially contacting parts of the components. In such a case, one also speaks of a complementary configuration of the at least contacting parts of the components. Alternatively, it can also be said that the components are designed to be complementary or supplementary. In this case, for example, the head of the expansion element can be designed such that it is received by the recording on the pressure plate and this accordingly fills to a certain extent, so the recording supplemented to a certain extent. For this purpose, the receptacle may have, for example, a complementary, that is to say an opposite but corresponding configuration to the head of the expansion element and be arranged on the pressure plate in such a way that the head of the expansion element of the receptacle at least Partially meadow can be taken up. For example, the head of the expansion element in the plane perpendicular to the longitudinal extension of the expansion element be hexagonal, wherein the cross section of the hexagonal head has a larger diameter than the shaft of the expansion element, and the pressure plate may have a corresponding hexagonal receptacle to the hexagonal head of the expansion element to absorb, that is at least partially surrounded form-fitting. Positive locking in this context means that the six sides of the hexagonal head of the expansion element are at least partially contacted by the corresponding six sides of the receptacle on the pressure plate. However, other ways are well known to those skilled in the art how a non-rotatable connection between two components can be produced.

The device according to the invention, whether detachable or not, can preferably be used in a device for fastening an insulating panel with simultaneous thermal insulation closure. In such a device torque must be exerted by the expansion element on the pressure plate, so that it can cut into the insulation board and / or milling.

In such a device for fixing an insulation panel to a substructure with simultaneous thermal insulation closure, the pressure plate has a side contacting the insulation panel and a side facing away from the insulation panel. Alternatively, it can also be said that the pressure plate has an upper side, namely the side facing away from the insulating plate and a lower side, namely the side facing the insulating plate. Furthermore, the device can also have an insulating material disc and the pressure plate can have a means for holding the Dämmstoffrondelle. This holding can be a releasable hold. If a tensile force is exerted on the insulating material, which exceeds the holding force, the Dämmstofondondelle detached from the pressure plate. For example, the Dämmstofondondelle be arranged on the top of the pressure plate and held there by the means for holding. The Dämmstoffrondelle itself is preferably made of a material which similar Thermal insulation features how the insulation board is placed in the device.

In such a device, the means for holding may be a peripheral edge extending substantially perpendicular to the pressure plate in the direction of the insulation material frond. This can, for example, surround the pressure plate facing part of the Dämmstoffrondelle and hold the Dämmstoffrondelle means of a clamp connection. For example, the peripheral edge may additionally have a peripheral elevation directed towards the center of the pressure plate, which reduces the inner diameter of the edge at this point. This survey can increase the clamping effect of the edge. The skilled person, however, other ways are known to increase the holding force at a clamp connection. For example, can be created by the shape of the clamping parts alone a clamping connection. In this case, for example, the inner diameter of the edge may be larger close to the pressure plate than further away from it, and the Dämmstoffrondelle may have a reverse course to outer diameter in the area surrounding the edge. The Dämmstofondondelle thus wiest example, a larger outer diameter in a region on which is arranged closer to the pressure plate than in a region which is farther away from the pressure plate. This leads to the fact that the two parts alone by their shape conditionally exert a certain holding force on each other. Alternatively or in addition to the edge but can also be provided a three-point fixing, so at three points from the pressure plate substantially vertically upwardly extending elevations, which are each offset by 120 ° and hold the Dämmstoffrondelle on the pressure plate by means of clamping connection. But it can also be provided Mehrpunktfixierungen. The skilled person but also other ways are known how two parts can be held together releasably by means of a clamping connection, wherein the clamping connection dissolves when a tensile force is exerted on a component or both components, which exceeds the holding force of the clamping connection.

Furthermore, this device may comprise at least one means to create a recess in the insulation board and thus a deep set - a recessed mounting - to allow. The created recess is also referred to as a sinkhole.

Furthermore, in such a device, the pressure plate may have at least one opening. This may be advantageous if the sinkhole is formed in the insulation board by dissolving insulation material, for example by scraping or milling. The thus dissolved material of the insulation board can then pass through the at least one opening from the bottom of the pressure plate to the top of the pressure plate and there, for example, collected or collected. The number of openings and their configuration is arbitrary and is selected by the skilled person depending on the insulation material used for the insulation board, as well as the way the material of the insulation board is scraped off or milled. In this case, for example, the opening itself also have at least one means for scraping or milling off the insulation board. For example, an edge of the opening may extend at an angle from the plane of the pressure plate towards the insulation panel and thus scrape or scrape the insulation panel when the pressure plate contacts the insulation panel and the pressure plate is rotated. The edge may be formed as a cutting edge, so taper in the direction away from the plane of the pressure plate. Alternatively or additionally, the edge of the opening which extends at an angle away from the plane of the pressure plate can also have at least one interruption, so that the edge is toothed. Alternatively or additionally, at least one edge of the opening can also have at least one elevation extending substantially perpendicular to the plane of the opening, which can cut away the insulation plate.

Furthermore, in such a device, the pressure plate on the side facing away from the Dämmstoffrondelle, ie the insulating material facing side (the bottom) to form the counterbore have at least one means for milling the insulation board. This can take the form of a variety, for example, from the level of Pressure plate in the direction of insulation board extending and tapering thorn-like elevations be designed. These may be part of the pressure plate or be placed on this. The mandrel-like elevations may for example be distributed radially on the pressure plate to allow a uniform milling. In this case, the means for milling, for example, be equally spaced and distribute radially from the center of the pressure plate to the edge of the pressure plate. Also, the thorn-like elevations may have different heights, so that a better milling can be guaranteed.

Furthermore, the Dämmstoffrondelle such a device on the pressure plate facing side have at least one recess. This recess can define a clearance with the pressure plate. In this space, if the pressure plate can penetrate through at least one opening through the material, the scraped or milled insulation material can be collected. This has the advantage that the scraped or milled insulation material does not enter the environment and can contribute further to the insulation effect.

Furthermore, the Dämmstoffrondelle such a device on the pressure plate facing side have an outer diameter which is smaller than the outer diameter on the side facing away from the pressure plate. In this case, the outer diameter on the side facing the pressure plate is preferably selected such that it is equal to or smaller than the diameter of a counterbore in the insulating plate and the outer diameter on the side facing away from the pressure plate is preferably selected such that it is greater than the diameter of the countersink hole. This has the advantage that when the pressure plate is recessed into the insulation plate, at least initially the part of the Dämmstoffrondelle having a smaller diameter than the countersunk hole, can penetrate into the sinkhole. When the pressure plate is then further driven into the insulation, the area of the Dämmstoffrondelle, which has a larger outer diameter than the countersunk hole, on the edge of the countersunk hole. Accordingly, the Dämmstofondondelle does not experience the same Infeed such as the pressure plate and a tensile force is exerted on the Dämmstofondondelle. If the tensile force exceeds the holding force exerted by the means for holding, the insulating material disc dissolves from the pressure plate. The release of the Dämmstoffrondelle of the pressure plate when setting the device according to the invention also has the advantage that a space between the Dämmstoffrondelle and the pressure plate is created, which can be filled with scraped or milled insulation material, without this enters the environment. Therefore, for example, Dämmstofondondellen can be used, which have no recess which defines a space for the scraped or milled insulation material, as defined by the recessed setting of the pressure plate and the distance to the Dämmstofondondelle anyway a free space. It is assumed that the diameter of the counterbore does not substantially change over the height of the counterbore - that is, its depth extension into the insulant plate. If the diameter of the counterbore over its height, however, vary, so should the outer diameter of the Dämmstoffrondelle, at least on the side facing away from the pressure plate, be greater than the diameter of the counterbore on the side of the insulating plate, which is opposite to the side that contacts the substructure, ie the inlet side of the pressure plate or surface of the insulation board.

Furthermore, the countersunk hole can be closed flush with the surface if, for example, subsequently or simultaneously pressure is exerted on the insulating material shell when setting such a device. This subsequent pressure is usually exerted by the setting tool when setting the device, so that here is not yet another step is needed.

Furthermore, the pressure plate of such a device on the underside may have a circumferential edge extending from the pressure plate substantially perpendicularly in the direction of the insulation plate. This peripheral edge may for example be designed to cut the insulation board. In this case, the edge, for example, have a sharply defined edge for cutting into the insulation board. For example, this edge may differ from the plane of the Pressure plate away, so down, taper and form a cutting edge. Cutting into the insulating material has the advantage that a clearly defined countersunk hole is created, which has no fringed edges, so that it can be closed by the Dämmstofondondelle best possible without holes created by any fraying between the Dämmstoffrondelle and the edges of the countersunk hole, possibly could lead to a reduction of the thermal insulation effect. The border may also have at least one interruption. For example, this break may be triangular and the rim may have more of these breaks so that the rim is serrated and allows for easier cutting. Furthermore, however, the edge can also have an additional means for cutting into the insulation board, which is fastened to the edge.

Furthermore, the spreading element of such a device can have a receptacle for a setting tool or at least one receptacle for the drive train of the setting tool at the end connected to the pressure plate. This receptacle may be, for example, a hexagonal receptacle and the setting tool may have a corresponding Allen cap on the drive train, which can cooperate with the recording in order to produce a detachable but non-rotatable connection. By means of this compound, the rotation of the setting tool can be transferred to the spreader and accordingly to the rotatably connectable to the spreader pressure plate when the inventive concept is realized. The inclusion of the expansion element should be designed such that it withstands a torque that is not only suitable to rotate the spreader and drive, but is also suitable to connect the spreader connectable with the pressure plate, which may still have means for scraping or for milling / Cutting the insulation board has. However, the recording may additionally also have a slip clutch, which prevents excessive torque is exerted and the spreader over-rotates. This can be advantageous, for example, if the expansion element is made of plastic and overtightening must be prevented in order to prevent any possible breakage. Alternatively or additionally Also, the pressure plate be attached by means of a slip clutch on the expansion element, so that if too much resistance occurs, the pressure plate is not rotated further.

If a pressure plate and a spreading element of a device described above for securing an insulating plate used with simultaneous thermal insulation, so it is advantageous to design the pressure plate and the expansion according to the invention with each other rotatable connectable, because it is made possible by different pressure plate with attached Dämmstoffrondelle with different expansion elements connect, without that various devices of this kind must be kept. For example, the same pressure plate with Dämmstoffrondelle can be used once with a spreader having a thread for attachment in the substructure and once with a spreader, which provides together with a dowel for attachment in the substructure. For this purpose, the expansion element and the pressure plate but according to the invention must be rotatably connected to each other.

In a preferred embodiment of the device according to the invention, the rotationally fixed connection is produced in that the pressure plate has a receptacle which can receive one end of the expansion element when the end of the expansion element comes to rest on the pressure plate. This concern may for example be due to the fact that the two components are put together. This mating can be done, for example, that the spreader is passed through a central opening of the pressure plate. This can also be done, for example, together with a pre-assembled at the other end of the expansion anchor for anchoring the expansion element in the substructure, so that the dowel not later either separately must be inserted into the substructure or after mating with one end of the Spreizelements must be pre-assembled. Accordingly, the plug can already be preassembled at the one end of the expansion element to facilitate the work steps but not be expanded in this preassembled state. The other end of the expansion element has preferably has a larger diameter than the shaft of the expansion element, so that this end forms a head of the expansion element. The head of the expansion element preferably has a larger diameter than the central opening of the pressure plate, so that slipping of the expansion element through the central opening of the pressure plate during mating can be prevented. If the underside of the head of the expansion element comes to rest on the upper side of the pressure plate and the head of the expansion element is at least partially surrounded by the receptacle on the pressure plate, then this acts as an abutment for the head of the expansion element. This makes it possible, when a torque acts on the expansion element, that the head of the expansion element can press against the receptacle, thus the abutment, and accordingly torque can be transmitted from the expansion element to the pressure plate. Conversely, even if torque is applied to the pressure plate, this torque can be transmitted to the expansion element.

So that the one end of the expansion element and the pressure plate can cooperate according to the invention and a rotationally fixed connection can be made, this end of the expansion element and the pressure plate preferably have complementary configurations that complement each other. So that one end of the expansion element and the pressure plate can cooperate in such a way, the one end of the expansion element and the pressure plate must be brought together in such a way that their complementarily configured regions can complement one another. For this purpose, an exact alignment of the two components to each other is necessary, for example, by a relative rotation of the two components to each other.

For easier alignment of the pressure plate and the expansion element, the pressure plate and / or the expansion element on an alignment aid. The alignment aid can be designed such that the alignment aid allows the alignment of the pressure plate relative to the expansion element, for example, by a simple pressure, without an additional active twisting of the expansion element relative to the pressure plate or vice versa is needed. Instead of pressure on At least one component to exert pressure at a pressure, a tensile force can be exerted on at least one component. In the following, printing pressure thus also includes the tension-side merging of the two components. The alignment aid ensures, for example, that the expansion element and the pressure plate are aligned with each other so that they can complement each other and can form a rotationally fixed connection.

In a preferred embodiment of the alignment aid, the orientation of the expansion element and the pressure plate to each other by the configuration of the expansion element and the pressure plate itself accomplished. Here, the configuration of the expansion element and the pressure plate is such that during mating / nesting a forced guidance of the two components takes place relative to each other in the pressure - or when train is exercised. In this case, one or both of the expansion element and the pressure plate on at least one inclined plane, along which that other of the two components or at least a part of the other component is forcibly guided in the pressure pressing. Inclined plane in this context means that a plane, surface, edge or even an edge is defined with an inclination relative to the longitudinal extension of the expansion element and / or to the plane of the pressure plate. Inclination in this context means that the inclined plane is aligned at an angle to the longitudinal extension of the expansion element and / or plane of the pressure plate, wherein the angle deviates from the angle of orientation of the longitudinal extension of the expansion element and / or the plane of the pressure plate. The positive guidance on such an inclined plane causes a defined rotation of the expansion element relative to the pressure plate or the pressure plate relative to the expansion element and thus leads to the alignment of the two components to each other. The at least one inclined plane specifies in which end position the one of the two components should be forcibly guided. The end position is defined by an end of the inclined plane.

In a preferred embodiment of such an alignment aid, for example, one end of the expansion element for Pressure plate have complementary design. Complementary in this context means, for example, that the one end of the expansion element defines an inclined plane or at the end of the expansion element is arranged an inclined plane and on the pressure plate at least one complementary inclined plane is arranged. If the inclined planes then contact each other during printing and are not aligned with one another, that is, they are not yet completely complementary, at least one component is forcibly guided along the inclined plane of the other component until the inclined planes are aligned and complementary. As a result, it comes with the pressure to twist the two components without the need for an active twisting is necessary. Active twisting in this context means that a device holds a component and rotates relative to a starting position.

In a further preferred embodiment of such an alignment aid, the one end of the expansion element can also have a plurality of inclined planes, ie even define these or be arranged at the end of the expansion multiple oblique planes and the pressure plate can correspondingly have a plurality of inclined planes. These mutually complementary inclined planes each form mutually tapering configurations, that is, opposing but corresponding embodiments. When the one end of the expansion element is guided in the direction of the pressure plate during the pressure pressing and the inclined planes of one end of the expansion element contact the inclined planes of the pressure plate, these are forced against each other and the two components are aligned relative to each other, namely by the predetermined fit the mutually complementary inclined planes, which ensure that at least one of the two components undergoes a defined rotation relative to the other component.

In a further preferred embodiment of the alignment aid, the pressure plate may have teeth that protrude substantially perpendicularly from the pressure plate and that are arranged crown-like around a central opening in the pressure plate. Each of these points forms two inclined planes from each side of the apex of the spike, ie the side of the tip of a spike. The one end of the expansion element may be configured such that it defines prongs which are complementary to the prongs projecting substantially perpendicularly from the pressure plate. If the expansion element and the pressure plate are then plugged together by pressure pressure and contact the oblique planes formed by the respective tines, they are forced against each other and the apices of the tines of the one end of the expansion element are guided to the interstices of the tines on the pressure plate and vice versa , This requires that align the two components to each other.

In a further preferred embodiment of the alignment aid, the pressure plate may have substantially perpendicular protruding from the pressure plate teeth, which are arranged like a crown around a central opening in the pressure plate, through which the expansion element can be performed. The expansion element can have at least one projection along its longitudinal extent or at the end of the expansion element which extends substantially perpendicular to the longitudinal extent of the expansion element away from the expansion element. If the expansion element and the pressure plate are plugged together by pressure and the projection contacted an inclined plane of a tine, the projection along the inclined plane is forced out. In this case, the distance of two prongs from one another, that is to say the end point of an inclined plane of a prong and the starting point of an inclined plane of the adjacent prong, may correspond to the width of the protrusion extending away from the spreader element so that it fits between two prongs. If the projection is arranged at the end of the expansion element, the projection can come to rest between two points. In this case, the area between two prongs is preferably configured such that it has a complementary configuration for configuring the protrusion and, when it comes to rest, can surround it in a form-fitting manner. If the projection is arranged along the longitudinal extent of the expansion element, it can also be guided through the pressure plate, for example through openings in each case in the region between two teeth, which correspond to the configuration or at least the width of the projection.

In a further preferred embodiment of the alignment aid, the pressure plate may have teeth extending substantially perpendicularly from the pressure plate, which are arranged in the shape of a crown around or on a receptacle of the pressure plate for the end of the expansion element. The area between two prongs can be formed by a notch or incision in the receptacle of the pressure plate itself. Preferably, the notch or incision is shaped complementary to the shape of the at least one projection of the end of the expansion element, i. the notch or incision has an opposite but corresponding shape to the at least one projection, so that the at least one projection can be at least partially received by a notch or incision, so that this recording can again support the torque transmission between the expansion element and pressure plate and higher Torques can be transmitted through the further counter-bearing which is given by receiving the projection in a notch or incision.

In a further preferred embodiment of the alignment aid, the end of the expansion element is hexagonally shaped in a plane substantially perpendicular to the longitudinal extension of the expansion element and has at least one projection extending from one of the six sides perpendicular to the longitudinal extension of the expansion element. Furthermore, the pressure plate preferably has a complementary receptacle which is configured such that the receptacle can contact the six sides of the hexagonal head of the expansion element when the expansion element and the pressure plate are aligned and plugged together. In this case, the pressure plate preferably has for the alignment crown-like arranged on the receptacle teeth or the receptacle is formed by the teeth themselves. Preferably, the receptacle also has six cuts or notches, which are arranged in the low point between two prongs and have a complementary shape to the at least one projection on the spreader, so that the projection of the spreader of these absorbed can be and the rest of the end of the expansion element of the receptacle on the pressure plate can be positively surrounded to produce a rotationally fixed connection between the spreader and the pressure plate.

In a further preferred embodiment of the alignment aid, the at least one inclined plane on the side at which it is contacted has a coating which favors a successive or slipping of the components in the positive guidance by the at least one inclined plane. The coating may, for example, have a lower coefficient of friction than that of the other material.

In a further preferred embodiment of the alignment aid, the at least one inclined plane on the side at which it is contacted may also be specially ground in order to minimize friction and to promote a simpler sliding against one another or slipping of the components during the forced guidance through the at least one inclined plane ,

In a further preferred embodiment of such an alignment aid, either the expansion element or the pressure plate has an inclined plane, for example in the form of a part of a helix, which defines a part of a thread. The other of the two components, which does not have the inclined plane may have a projection, which when he contacted the inclined plane is forcibly guided on this, so that the corresponding component due to the thread defined by the inclined plane performs a rotation and the other Component is aligned. The thread thus defined can not only serve to align the two components, but can also serve for the rotationally fixed connection of the two components at the same time. In this case, the rotationally fixed connection is made when the projection of a component has arrived at the end of the inclined plane, ie at the end point of the thread.

Are the expansion element and the pressure plate merged by the pressure pressing and, for example, an alignment of the two components to each other done by an alignment aid, it also sets the task of the axial position fixation of the expansion element on the pressure plate.

In a preferred embodiment of the device according to the invention, the expansion element for simultaneous axial - translational - fixation on the pressure plate, along its shank also have at least one barb, which can first be compressed when the expansion element is pushed through the central opening of the pressure plate and then supports against the underside of the pressure plate. The distance between the at least one barb and the underside of the head of the expansion element preferably corresponds to the thickness of the pressure plate, so that a position fixation of the pressure plate between the head of the expansion element and the at least one barb can take place. However, the person skilled in the art is also familiar with further possibilities for generating a translational but releasable position fixation. The translational position fixation has the advantage that on the construction site devices according to the invention can be pre-assembled and then subsequently transported to the place of use, without causing the pressure plate releases again from the expansion element.

In a further preferred embodiment of the device according to the invention, the pressure plate and / or the spreading element are made of plastic. This has the advantage that plastic is a poor conductor of heat and accordingly thermal bridges can be avoided. In this case, the pressure plate and / or the expansion element may for example be made of a high-strength composite material, which withstands the loads to which it is exposed. This high-strength composite material may be, for example, a glass fiber reinforced PA, or glass fiber reinforced PP.

In a further preferred embodiment of the device according to the invention, either the pressure plate or the expansion element a receptacle for a setting tool or at least the drive train of a setting tool, so that torque can be exerted on the expansion element or the pressure plate. The non-rotatable connection between pressure plate and expansion element ensures that torque is transmitted between the components. To prevent over-rotation, a slip clutch can be provided on the expansion element or on the pressure plate. However, the person skilled in the art also knows of other ways in which overturning can be prevented.

Fig. 1a

eine Schnittansicht eines Ausführungsbeispiels einer Vorrichtung zum Befestigen einer Dämmstoffplatte mit gleichzeitigem Wärmedämmverschluss, die nicht Teil der Erfindung ist;

Fig. 1b

eine Schnittansicht der in dem Ausführungsbeispiel von Fig. 1a verwendeten Dämmstoffrondelle, die nicht Teil der Erfindung ist;

Fig. 1c

eine Schnittansicht des in dem Ausführungsbeispiel von Fig. 1a verwendeten Drucktellers, der nicht Teil der Erfindung ist;

Fig. 2

eine Schnittansicht des Setzens des in Fig. 1a gezeigten Ausführungsbeispiels in eine Unterkonstruktion mit Dämmstoffplatte, das nicht Teil der Erfindung ist;

Fig. 3

eine perspektivische Ansicht eines Kopfes eines Spreizelements eines Ausführungsbeispiels einer erfindungsgemäßen Vorrichtung;

Fig. 4

eine perspektivische Ansicht eines Drucktellers mit Aufnahme passend zu dem in Fig. 3 gezeigten Kopf eines Spreizelements einer erfindungsgemäßen Vorrichtung.

The accompanying drawings illustrate the device according to the invention and the method according to the invention by means of an embodiment. Show it:

Fig. 1a

a sectional view of an embodiment of an apparatus for fixing an insulating plate with simultaneous thermal insulation closure, which is not part of the invention;

Fig. 1b

a sectional view of the in the embodiment of Fig. 1a used Dämmstofondondelle, which is not part of the invention;

Fig. 1c

a sectional view of the in the embodiment of Fig. 1a used pressure plate, which is not part of the invention;

Fig. 2

a sectional view of setting the in Fig. 1a shown embodiment in a substructure with insulation board, which is not part of the invention;

Fig. 3

a perspective view of a head of a spreading element of an embodiment of a device according to the invention;

Fig. 4

a perspective view of a printing plate with recording suitable for in Fig. 3 shown head of a spreading element of a device according to the invention.

FIG. 1a shows a sectional view of an embodiment of an apparatus 1 for fixing an insulating plate with simultaneous thermal insulation closure. The device 1 has a spreading element 2, on whose one end 3 is connected to a pressure plate 4. In the embodiment shown here, the expansion element 2 with the pressure plate 4 releasably but rotatably connected. For this purpose, the end 3 of the expansion element 2 - the head of the expansion element 2 - for example, a hexagonal shape which is positively surrounded by a protruding or formed by the pressure plate 4 collar 10. As a result, a rotationally fixed but releasable connection between the pressure plate 4 and the one end 3 of the expansion element 2 is created. In order to fix the expansion element 2 also translational, for example, a click connection between spreader 2 and pressure plate 4 can be made. For example, the expansion element 2 may have barbs along its shank (not shown here), which press against the underside of the pressure plate 4-that is, the side contacting the insulating material-so as to prevent a translatory movement. However, other connections are known to those skilled in the art, which allow a position fixation, as well as a torque transmission.

The pressure plate 4 in the embodiment shown here further comprises a peripheral edge 5a, 5b, which extends substantially perpendicularly from the pressure plate 4 up and down. Above and below this refers to the side facing away from the insulating plate side (top) of the pressure plate 4 and one of the insulating plate facing side (bottom) of the pressure plate 4. The here upwardly extending edge 5a surrounds circumferentially partially arranged on the pressure plate 4 Dämmstoffrondelle 6 and contacts these at the surrounding area, so that a clamping connection between the edge 5a and the Dämmstoffrondelle 6 results. The edge 5a thus acting as a means for holding the Dämmstoffrondelle 6. The downwardly extending edge 5b has a circumferential cutting edge, which serves to cut the insulation plate when the device 1 is placed in the insulation board. The cutting edge is formed by a taper of the edge 5b in the direction of the insulation board. Even if the cutting edge of the edge 5b is shown in the embodiment shown here as a continuous, continuous edge, this may also have other shapes, for example, the edge 5b may have several interruptions, so that the cutting edge appears toothed, so has a sawtooth course.

In the embodiment shown here, the Dämmstoffrondelle 6 has a recess 8 which defines a free space with the top of the pressure plate 4. This space serves to receive material which is scraped or milled off at the bottom of the pressure plate 4 and passes through at least one opening 14 through the pressure plate 4 from the bottom to the top of the pressure plate 4, when the pressure plate 4 is recessed in the insulation board and Having means for scraping and / or milling the insulation board. In the embodiment shown here, the pressure plate 4 on the underside thorn-like emphasis 9, which serve as a means for milling. The space formed by the recess 8 ensures that when setting the device 1 in the insulation board recessed mounting of the pressure plate 4 by cutting and scraping or milling is made possible without scraped or milled material enters the environment, as this can collect in the defined space.

The Dämmstofondondelle 6 in the embodiment shown here also has an opening 7, through which a drive train of a setting tool can be introduced so that it can cooperate with a receptacle in the end 3 of the expansion element 2, which is connected to the pressure plate 4, and Torque on the expansion element 2, as well as on the pressure plate 4 can transmit. Through this opening 7, when pulling out the drive train, a small proportion of the scraped or milled material from the defined clearance can still enter the environment. However, this share is negligible. Also, the Dämmstoffrondelle 6 may have, for example, a star-shaped cut diaphragm at the opening 7, through which the drive train of the setting tool must be performed and the withdrawal of the drive train from the opening 7, this closes again so that no material can escape. However, the person skilled in the art is also aware of other possibilities for configuring the opening 7 of the insulating material disc 6 in such a way that a drive train of a setting tool can be inserted and removed again without any loose material emerging.

FIG. 1b shows a sectional view of the Dämmstoffrondelle 6 of the embodiment of the device 1, as shown in FIG. 1a , The Dämmstofondondelle 6 has on the lower side, so the side in FIG. 1a the pressure plate 4 faces, an outer diameter d _{1, on the outside} . This outer diameter d _{1, outer} corresponds substantially to the inner diameter defined by the upper edge 5a of the pressure plate 4 (see Figure 1c ), wherein in the embodiment shown here, the outer diameter d _{1, outside} marginally larger than the inner diameter, so that the Dämmstoffrondelle 6 can enter into a clamping connection with the upper edge 5a of the pressure plate 4. The upper edge 5a of the pressure plate 4 can exert a holding force on the Dämmstoffrondelle 6 by means of this clamp connection and hold the Dämmstofondondelle 6 on the pressure plate 4, until the Dämmstoffrondelle 6 a tensile force is exerted that exceeds the holding force. At the upper side of the Dämmstofondondelle 6, so the side in FIG. 1a facing away from the pressure plate 4, the Dämmstoffrondelle 6 has an outer diameter d _{2, outside} , which is larger than the outer diameter d _{1, outside} . This outer diameter d _{2, outside} is preferably selected to be larger than the outer diameter of the edge 5 a, 5 b of the pressure plate 4 and thus larger than the diameter of the Senklochs, which is defined by the lower edge 5 b of the pressure plate 4. The Dämmstofondondelle 6 itself is preferably formed of a material which has similar insulating properties, such as the material of the insulation board. Examples of such materials may be expanded polystyrene EPS, PUR, etc.

Figure 1c shows a sectional view of the pressure plate 4 of the embodiment of the device 1, as shown in FIG FIG. 1a , In this case, the upper edge 5 a defines an inner diameter d _{1, inside} substantially the outer diameter d _{1, outside of} the Dämmstoffrondelle 6, as in FIG. 1b shown, corresponds, so that the upper edge 5a of the pressure plate 4 with the Dämmstoffrondelle 6 can enter into a clamping connection. Through this clamping connection, which is formed by means of the static friction between the contacting parts acts on the Dämmstoffrondelle 6 a holding force that holds the Dämmstoffrondelle 6 on the pressure plate 4. In order to reinforce the clamping connection and the resulting holding effect, in the exemplary embodiment shown here, the upper edge 5a of the pressure plate 4 also has an elevation 13 directed inward in the direction of the center of the pressure plate 4. This elevation 13 reduces the inner diameter d _{1, inside} , so that the holding force exerted by the upper edge 5 a of the pressure plate 4 is amplified. This may be advantageous, for example, if the static frictional force between the contacting regions of the Dämmstoffrondelle 6 and the edge 5a of the pressure plate 4 is not high enough to ensure sufficient holding force, for example due to the choice of materials. However, the increase in the holding force can be ensured accordingly by the choice of materials or their coating to the contacting areas.

FIG. 2 shows a sectional view of setting the in FIG. 1a shown embodiment of the device 1 in a substructure with insulation board 11th FIG. 2 illustrates the setting method of the device 1 in the insulation board 11 by means of three snapshots (A), (B) and (C). In the first snapshot (A) a hole in the substructure (not shown here) and the insulation plate 11 is already drilled and already a dowel (not shown here) has been introduced, and the expansion element 2 arranged thereon pressure plate 4 and held on it Dämmstoffrondelle 6. Accordingly, initially contacted only the lower edge 5b of the pressure plate 4, the insulation board 11 and cuts them circumferentially, so that a defined edge of a countersunk hole 12 is formed. Now, if the expansion element 2, for example by rotation further into the dowel (not shown here) driven, so the pressure plate 4 cuts further into the insulation board 11 a. In this case, for example, the drive train of the setting tool (not shown here) through the opening 7 in the Dämmstoffrondelle 6 engage in a provided at the end 3 of the spreader 2 recess and rotate the spreader 2, whereby the associated pressure plate 4 is rotated because of the head 3 of the expansion element 2 and the pressure plate 4 rotatably connected to each other. By means of located on the underside of the pressure plate 4 means for milling 9 while insulating material is released from the insulation board 11 and can pass through the at least one opening 14 in the pressure plate 4 in the space defined by the recess 8 in the Dämmstoffrondelle 6 and the pressure plate 4 free space and be collected there. This can be seen in the second snapshot (B). In this snapshot can also be seen that a part of the Dämmstoffrondelle 6 is already in the lowering hole 12. This part of the Dämmstoffrondelle has a smaller diameter than the countersunk hole 12, whose diameter is defined by the outer diameter of the pressure plate 4 surrounding peripheral edge 5a, 5b. The Dämmstofondondelle 6 was accordingly initially held by the edge 5a and transported to a part with in the lowering hole 12. Since the outer diameter of the Dämmstoffrondelle 6 on the side facing away from the pressure plate 4 is preferably greater than the diameter of the counterbore 12, sets the Dämmstoffrondelle 6 in the transition region of the two outer diameters on the edge of the Senklochs 12 and does not experience the same propulsion, as the Pressure plate 4. As a result, a tensile force acts on the Dämmstoffrondelle 6, which counteracts the holding force exerted by the edge 5a of the pressure plate 4. This tensile force is created by the between Dämmstofondondelle 6 and the edge of the counterbore 12 occurring static friction force and the further cutting of the pressure plate 4 in the insulation board 11, in particular because as in connection with Figures 1b and 1c described, the outer diameter d _{2, outside of} the Dämmstoffrondelle 6 is greater than the diameter of the Senklochs 12. If the resulting tensile force is greater than the force exerted by the upper edge 5 a on the Dämmstoffrondelle 6 holding force, the Dämmstoffrondelle 6 dissolves from the pressure plate. 4 Due to the fact that the Dämmstoffrondelle 6 can solve from the upper edge 5a of the pressure plate 4 during setting, the pressure plate 4 can be set in different depths in the insulation board 11 and yet a thermal insulation closure of the Senklochs 12 is ensured by means of Dämmstoffrondelle 6. In this case, in subsequent pressure application to the Dämmstoffrondelle 6 when setting, for example, by a setting tool arranged depth stop the formed between Dämmstoffrondelle 6 and the edge of the Senklochs stiction are overcome and the Dämmstofondondelle 6 are pushed further into the sinkhole 12, so that a homogeneous surface is formed as shown in the snapshot (C), which can be plastered, for example.

FIG. 3 shows a perspective view of a spreader 2 of an embodiment of a device according to the invention, wherein such a spreader 2, for example, in a device 1 for fixing an insulating plate 11 with simultaneous thermal insulation closure, as in the FIGS. 1 and 2 shown, can be used. The end 3 of the expansion element 2 is configured hexagonal in the plane perpendicular to the longitudinal extension of the expansion element 2 and forms a head of the expansion element 2. This head of the expansion element 2 has a larger cross-section than the shaft of the expansion element 2. From one side of the hexagonal end 3 of the expansion element 2, a projection 15 extends away from the end 3 of the expansion element 2. The projection 15 extends substantially perpendicular to the longitudinal extension of the expansion element 2 and, accordingly, also perpendicular to one of the sides of the hexagonal end 3 of the expansion element 2, wherein the sides here have a substantially parallel extension to the longitudinal extent of the expansion element 2. The end 3 of the expansion element 2 and the projection 15 can by a corresponding receptacle on the pressure plate 4, as in FIG. 4 are shown, when the pressure plate 4 and the expansion element 2 are compressed / assembled, so that a rotationally fixed connection between the spreader 2 and the pressure plate 4 can be made. The projection 15 serves together with means on the pressure plate 4, as in FIG. 4 shown as an alignment aid to align the end 3 of the expansion element 2 to fit the receptacle 10 of the pressure plate 4.

Below the end 3 of the spreader 2 at least one barb 17 is arranged. The distance between the top of the barb 17 to the bottom of the end 3 of the expansion element 2 corresponds substantially to the thickness of the pressure plate 4. The at least one barb 17 protrudes in the in FIG. 3 shown first position beyond the cross section of the shaft of the expansion element 2, so that the cross section is preferably greater than the cross section of a central opening in the pressure plate 4, through which the expansion element 2 is guided when the expansion element 2 and the pressure plate 4 are put together. During the guiding of the expansion element 2 through the central opening of the pressure plate 4, the barb 17 can preferably be moved to a second position in which it does not increase the cross section of the shaft of the expansion element 2, so that the shaft of the expansion element 2 together with the at least one Barb 17 through the central opening of the pressure plate 4 fits. Only when the barb 17 is below the pressure plate 4, this moves back to the first position and increases again the cross section of the shaft of the expansion element 2. Preferably, the movement of the barb 17 happens automatically from the first position to the second position at the pressure of the expansion element 2 and the pressure plate 4, for example due to the geometry of the barb 17. In the in FIG. 3 shown barbs 17, this tapers in the direction of the first end of the expansion element 2 - the end which is designed for fixing the expansion element 2 in the substructure. This tapered geometry of the barb 17 ensures during pressure compression of the expansion element 2 and the pressure plate 4 that the barb 17 moves to the second position when it is passed through the central opening of the pressure plate 4. When the barb 17 is passed through the central opening of the pressure plate 4, it moves again from the second position to the first position. For this purpose, the barb 17 preferably has a restoring means, which preferably holds the barbs 17 in the first position and returns the barbs 17 from the second position back to the first position. This return means can also be embodied by the choice of material from which the barbs 17 consists. In this case, the material can be chosen such that it always strives back after deformation to the starting position, ie the first position.

FIG. 4 shows a perspective view of a pressure plate 4 with receptacle 10 matching the in FIG. 3 The pressure plate 4 itself has a central opening through which the expansion element 2 can be guided, wherein the shank of the expansion element 2 has a smaller diameter than the central opening of the pressure plate 4. The end 3 of the expansion element 2 has a larger cross section than the central opening of the pressure plate 4 and thus serves as an end stop when the bottom of the end 3 of the expansion element 2 comes to rest on the top of the pressure plate 4. The end 3 of the expansion element 2 is, as in the FIGS. 1 and 2 shown surrounded by the receptacle 10 on the pressure plate 4 positively when this comes to rest on the pressure plate 4. Surround this positive, causes the inventive rotationally fixed connection - ie a connection with the torque of the one can be transmitted to the other component.

For easier mating / compression of the expansion element 2 and the pressure plate 4 are arranged on the receptacle 10 of the pressure plate 4 crown-like teeth 10a or the teeth 10a form the receptacle 10. Between the teeth 10a is located in each case in the low point between two teeth 10a a cut or notch , These notches or notches have a complementary shape to the protrusion 15 extending away from the end 3 of the expansion element 2 and form for this receptacle 16.

If the expansion element 2 is inserted into the central opening of the pressure plate 4 and pressure is exerted on the end 3 of the expansion element 2 in the direction of the pressure plate 4 - accordingly a tensile force can also be exerted on the other end of the expansion element 2 - the end 3 of the expansion element approaches 2 and the teeth 10a. Then, when the protrusion 15 contacts an inclined plane of a prong 10a and further pressure is exerted - or according to tension - the protrusion 15 is forcibly guided along the inclined plane of the prong 10a. This has the consequence that the spreader 2 rotates relative to the pressure plate 4 and an alignment takes place, namely an alignment between the hexagonal end 3 of the spreader 2 and the hexagonal receptacle 10 of the pressure plate 4. When a complete alignment is achieved and the projection 15th is located in the low point between two prongs 10a, so the projection 15 can be received by one of the incisions / notches 16 in the receptacle 10, so that the remaining end 3 of the expander 2 can then be surrounded by the receptacle 10 positively, so that a rotationally fixed connection can be made. Rotationally fixed in this context means that the expansion element 2 and the pressure plate 4 are fixed radially to each other. The prongs 10a and the projection 15 serve accordingly as an alignment aid to simply push together / squeeze the spreader 2 and the pressure plate 4, without an active rotation of the two components would be necessary.

A translational - axial - position fixation of the expansion element 2 on the pressure plate 4 is realized by the at least one barb 17. When the expansion element 17 is inserted into the central opening of the pressure plate 4 and the end 3 of the expansion element 2 is aligned with the receptacle 10 of the pressure plate 4 and on the pressure plate 4 comes to rest, so that the end 3 of the expansion element 2 of the receptacle 10th received the pressure plate and surrounded positively, then the barb 17 is pushed through the central opening of the pressure plate 4 and can press against the underside of the pressure plate 4, so as to prevent the pressure plate 4 and the expansion element 2 separate again from each other. For this reason, the upper side of the barb 17 preferably has a distance from the underside of the end 3 of the expansion element 2, which corresponds to the thickness of the pressure plate 4 substantially, so that when the underside of the end 3 of the expansion element 2 rests on the upper side of the pressure plate 4 , the top of the barb 17 preferably the bottom of the pressure plate 4 can contact. In this case, the end 3 of the expansion element 2 with its larger cross-section than the central opening of the pressure plate 4 ensures that the expansion element 2 can not slide down through the central opening and the barbs 17 ensures that the expansion element 2 is not back up through the central opening of the pressure plate 4 can slip. However, the barb 17 can be deformed by a force such that this slip fixation can be canceled and the expansion element 2 can be removed again through the central opening of the pressure plate 4 upwards. Thus, the barbs 17 ensures that the connection between the pressure plate 4 and the expansion element 2 is reversible, that is releasable. However, other solutions are also known to the person skilled in the art how a translational reversible position fixation can be realized.

Claims (13)

1. An apparatus (1) for fastening an insulation panel (11) to a substructure, the apparatus (1) comprising:

   an expansion element (2) with two opposing ends, wherein the one end is configured for fixing the expansion element (2) into the substructure; and

   a pressing plate (4) for pressing the insulation panel (11) to the substructure, wherein the other end (3) of the expansion element (2) and the pressing plate (4) are configured to be connected torque-proof; and

   an alignment means for aligning the expansion element (2) and the pressing plate (4) relatively to each other for the torque-proof connection of the expansion element (2) with the pressing plate (4),

   wherein the alignment comprises a rotating of the expansion element (2) and the pressing plate (4) relatively to each other,

   characterized in that

   one or both of the expansion element (2) and the pressing plate (4) comprise at least one ramp along which at least a part of the other one is force-guided for alignment of the expansion element (2) and

   the pressing plate (4) relatively to each other, and wherein the rotating of the expansion element (2) and the pressing plate (4) relatively to each other is caused by the force-guiding at the ramp.
2. The apparatus (1) of claim 1, wherein at the one end (3) of the expansion element (2) at least one ramp is arranged and on the pressing plate (4) at least one complementary ramp is arranged for alignment of the expansion element (2) and the pressing plate (4) relatively to each other.
3. The apparatus (1) of claim 1, wherein the end (3) of the expansion element (2), which is connectable to the pressing plate (4), comprises a head and the pressing plate (4) comprises an accommodation (10), wherein the accommodation (10) surrounds the head at least partly form-closed for torque-proof connection of the expansion element (2) to the pressing plate (4).
4. The apparatus (1) of claim 3, wherein the head comprises at least one protrusion (15), which extends substantially perpendicular from the head to the longitudinal extension of the expansion element (2).
5. The apparatus (1) of claim 4, wherein the accommodation (10) comprises crown-like arranged spikes (10a), which extend substantially perpendicular to the pressing plate (4) from the accommodation (10).
6. The apparatus (1) of claim 5, wherein the spikes (10a) are spaced from each other, wherein the distance between the spikes (10a) from each other substantially corresponds to the width of the protrusion (15), which extends from the head of the expansion element (2).
7. The apparatus (1) of claim 6, wherein the spacing of the spikes (10a) form accommodations (16), which are shaped in such a way that the accommodations (16) at least partly surround form-closed the protrusion (15), which extends from the head of the expansion element (2).
8. The apparatus (1) of any of claims 3 to 7, wherein the head is hexagonal.
9. The apparatus (1) of any of the claims 3 to 8, wherein the accommodation (10) is hexagonal.
10. The apparatus (1) of claim 9, wherein the accommodation (10) comprises six spikes (10a).
11. The apparatus (1) of any of the preceding claims, wherein the expansion element (2) comprises at least one barb (17) along its shaft for translational position fixing of the expansion element (2) at the pressing plate (4).
12. The apparatus (1) of any of the preceding claims, wherein the expansion element (2) and/or the pressing plate (4) consists of plastic.
13. The apparatus (1) of any of the preceding claims, wherein the expansion element (2) comprises an accommodation for a setting tool at the end (3), which is connected to the pressing plate (4).

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