Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
  • F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
  • F16B13/124—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting a threaded element, e.g. screw or bolt

Definitions

• the invention relates to an attachment to a thermal insulation composite system (ETICS) with with the features of the preamble of claim 1 and an expansion dowel for attachment in a thermal insulation composite system with the features of the preamble of claim 7.
• the invention is for the attachment of not too heavy objects such as House numbers, signs, lamps or ringer and intercoms thought. It is not suitable for fastening heavy objects or high loads such as blinds that require anchoring through the thermal insulation composite system in a masonry, concrete or the like.
• the object of the invention is to propose an attachment with an expansion anchor and an expansion anchor, which / is suitable for attachment in a thermal insulation composite system.
• the ETICS has an insulating layer, on the outside of a plaster layer is attached. Through the plaster layer goes through a hole that extends into the insulating layer. In the hole, an expansion dowel is introduced, which passes through the plaster layer and extends into the insulation layer. The expansion anchor is spread in the insulating layer so that it engages behind the plaster layer. Not provided, but also not excluded that the expansion dowel is spread in the plaster layer. If the expansion anchor is spread in the plaster layer, then preferably in one of the insulating layer facing area. Whether the expansion dowel is already spread in the plaster layer or only in the insulating layer depends, apart from the expansion dowel itself also from a thickness of the plaster layer.
• the spread expansion dowel Due to the spreading in the insulating layer and the reaching behind the plaster layer, the spread expansion dowel has a good grip in the ETICS, he uses a strength of the plaster layer and a compound of the plaster layer with the insulating layer for attachment.
• the attachment according to the invention is of course not suitable, but the strength of the insulating layer and the plaster layer of the ETICS is too low.
• the invention is ideally suited for mounting not too heavy objects such as house numbers, signs, lamps or bell and intercoms, for which it offers a simple, fast and sufficient mounting option.
• the expansion dowel does not pass through the insulating layer, but extends in particular only a short distance in the insulating layer, whereby a cold bridge is avoided without further action.
• the spread-out expansion plug engages behind the plaster layer of the ETICS free of play, so it spreads immediately behind the plaster layer, possibly even in one of the insulating layer facing the plaster layer.
• the expansion anchor made of a plastic, that is a thermally insulating material.
• the expansion anchor on a sealing portion which is located in the hole of the plaster layer of the thermal insulation composite system.
• the sealing portion is closed in the circumferential direction of the expansion anchor and expands in the direction of a rear end of the expansion anchor, ie its circumferential cross-section increases in the direction of a rear end of the expansion anchor.
• the rear end of the expansion anchor facing away from the insulating layer and accessible from an outside of the plaster layer, for example, for introducing a spreader in the expansion dowel.
• the expansion anchor in the sealing portion is conical, he can, for example, also expand spherical or hollow round.
• the sealing portion of the expansion anchor Due to the extension of the sealing portion of the expansion anchor is at least in the area with the larger circumference with a bias on a hole wall of the hole in the plaster layer of the thermal insulation composite system, it is achieved a seal for plaster.
• the invention avoids the penetration of water into the plaster layer through the hole wall of the hole in the plaster layer where the plaster layer is not protected by a paint.
• the sealing section of the expansion anchor according to the invention is formed in the circumferential direction closed, so in particular tubular without a slot to prevent leakage in the sealing portion within the plaster layer of the thermal insulation composite system.
• An embodiment of the invention provides an internal thread in the sealing portion of the expansion anchor into which an expansion screw is screwed, which spreads the expansion dowel so that it engages behind the plaster layer of the thermal insulation system. Due to the circumferentially closed design of the sealing portion of the expansion anchor is not spread there and kept the internal thread with a thread of the expansion screw in engagement. An insertion torque of the expansion increases when screwing in the expansible plug jump, when a screw head of the expansion screw comes into contact with an object to be fastened and this clamped against the rear end of the expansion anchor or the plaster layer. This increase in torque signals that the expansion anchor is set and spread as intended.
• the expansion screw is preferably as well as the expansion anchor made of plastic, ie of a thermally insulating material, so that a cold bridge is avoided.
• the expansion screw seals in the expansion anchor, whereby penetration of water through the expansion dowel is avoided in the thermal insulation system.
• an embodiment of the invention provides a rotation locking device on
• sealing section of the expansion anchor before.
• the sealing portion a Sealing section of the expansion anchor before.
• Polygonal have a star or multi-tooth profile or outwardly projecting ribs.
• the anti-rotation device reduces the risk of co-rotation of the expansion anchor when screwing in the expansion screw.
• ribs have the advantage that they are at
• An embodiment of the invention provides a setting depth stop of the expansion anchor. This may be an outwardly projecting edge in the manner of a flange act on the rear end of the sealing section.
• the setting depth stop limits a penetration depth of the expansion anchor in the thermal insulation composite system and ensures the intended position of the expansion anchor in the thermal insulation composite system in which the sealing portion of the expansion anchor in the plaster layer and the expansion anchor is preferably directly on the insulating layer facing inside of the plaster layer or already in the plaster layer spreads begins, so that the spread-expansion plug engages behind the plaster layer of the thermal insulation composite system backlash.
• the expansion anchor according to the invention has a spreading section in front of the sealing section. If the expansion dowel is introduced into the thermal insulation composite system in the intended manner, the expansion section is located in the insulating layer.
• the spreading portion may be formed by one or more slots and / or a narrowing of an inner cross section of the expansion anchor. For spreading an expansion screw in the internal thread of the sealing portion of the expansion anchor and screwed in so far that it protrudes into the expansion and spreads it. Due to the spreading, the spreading section is pressed laterally into the insulating layer and engages behind the plaster layer of the external thermal insulation composite system.
• the sealing section which is located in the plaster layer of the external thermal insulation composite system, is preferably no longer thicker than the plaster layer, so that the spread-out spreading section rests without clearance on an inner side of the plaster layer facing the insulating layer. Due to the spreading in the insulating layer and the preferably backlash-free rear grip of the plaster layer a good attachment of the expansion anchor in the thermal insulation composite system is given, which uses the strength of the insulating layer and the plaster layer. The attachment is sufficient for the aforementioned, not too large loads.
• Figure 1 shows an expansion dowel according to the invention in a perspective view
• Figure 2 is an axial section of the expansion anchor of Figure 1; and an axial section of a fastening according to the invention with the expansion anchor of Figures 1 and 2 in the spread and anchored state.
• the expansion dowel 1 according to the invention shown in the drawing consists of a plastic and has at the front a spreading section 3 and a sealing section 4 at the rear. In the exemplary embodiment, they each take about one half of a length of the expansion anchor 1.
• the expansion anchor 1 has an outwardly projecting radial flange 2 as a setting depth stop.
• the term “front” or “front end” designates the end of the expansion anchor 1 with which the expansion anchor 1 is inserted into a previously drilled hole in a thermal insulation composite system (ETICS) 6.
• the "rear end” of the expansion anchor 1 is accessible even after the introduction of the expansion anchor 1 in the composite thermal insulation system 6, the rear end of the expansion anchor 1 is open for introducing a spreader 7th
• the expansion section 3 of the expansion anchor 1 is divided by a transverse through the expansion dowel 1 slot 8 in a longitudinal center plane of the expansion anchor 1 in two expansion leg 9, which can be seen by introducing the expansion screw 7 as shown in Figure 3 spreadable.
• the slot 8 ends at the transition from the expansion section 3 to the sealing section 4.
• the expansion section 3 has a cylindrical lateral surface.
• the expansion limbs 9 each have a longitudinal groove 10 on their mutually facing inner sides in a longitudinal center plane of the expansion anchor 1.
• the sealing portion 4 of the expansion anchor 1 is tubular with a conical lateral surface which widens from the front to the rear. Ie.
• an outer diameter of the expansion anchor 1 increases from the front to the rear, ie from the expansion section 3 to the radial flange 2.
• the expansion anchor 1 has an internal thread 5 for screwing in the expansion screw 7.
• the internal thread 5 reduces a required for screwing the expansion screw 7 torque.
• the expansion anchor 1 is closed in the circumferential direction, so that it does not expand when screwing in the expansion screw 7 and a thread 13 of the expansion screw 7 remains in engagement with the internal thread 5 of the expansion anchor 1, even if, for example at a Tightening the expansion screw 7, a high axial force between the expansion screw 7 and the expansion anchor 1 acts.
• the sealing section 4 is as long or slightly shorter as a plaster layer 14 of the thermal insulation composite system 6 is thick, usual plaster layer thicknesses are about 3 to 5 mm.
• the length of the sealing section 4 is preferably matched to small plaster layer thicknesses, so that the spread spreader leg 9 abut against an inner side of the plaster layer 14 and engage behind this clearance and possibly with a bias.
• the expansion anchor 1 has two longitudinal ribs which form a rotation-locking device 16.
• the two longitudinal ribs are arranged opposite each other in a longitudinal center plane of the expansion anchor 1, in the longitudinal direction they extend over the sealing portion 4, ie from the transition from the spreading 3 to the sealing portion 3, where the slot 8 ends, which divides the expansion section 3 in the two expansion legs 9 to the radial flange 2 at the rear end of the expansion anchor 1.
• the longitudinal ribs are offset by 90 ° in the circumferential direction, so that they are visible.
• the expansion screw 7 is made of plastic, so as the expansion dowel 1 made of a thermally insulating and non-rusting material, in particular made of fiber-reinforced plastic. By the preparation of the expansion screw 7 as well as the expansion anchor 1 made of plastic cold bridge is avoided.
• the expansion screw 7 has a relatively thick core and a low thread turn. With a nominal screw diameter of 5 mm for a expansion anchor 1 with a nominal diameter of 6 mm, a height of the thread is 0.3 mm, a diameter of the thread 13 of the expansion screw 7 is thus 0.6 mm or 13-14% larger than a core diameter of the thread 13 of the expansion screw 7. Due to the thick core, the expansion screw 7 is stable and can therefore consist of plastic. In addition, it has a large displacement effect, i. H. she spreads the expansion anchor 1 strong.
• the expansion anchor 1 For fixing the expansion anchor 1, a hole is drilled through the plaster layer 14 in an insulating layer 15 of the thermal insulation composite system 6 ( Figure 3) and the expansion anchor 1 is introduced with its expansion section 3 ahead in the hole.
• the expansion anchor 1 can be driven, for example by hammer blows in the thermal insulation system 6.
• the introduction of the expansion anchor 1 ends when forming the setting depth stop radial flange 2 at the rear end of the expansion anchor 1 is seated on an outer side of the plaster layer 14.
• the expansion screw 7 is screwed into the internal thread 5 of the expansion anchor 1; the expansion screw 7 is screwed through the sealing portion 4, so that it projects into the expansion section 3 and the expansion legs 9 as shown in Figure 3 presses apart, ie the expansion screw 7 spreads the expansion section 3.
• the expansion legs 9 are pressed and anchored in the insulating layer 15 of the thermal insulation system 6, ie fasten the expansion dowel 1 there.
• the spread spreader leg 9 engage behind the plaster layer 14, whereby an additional anchoring is given.
• the spread expansion legs 9 are free of play, preferably when the sealing portion 4 is shorter than the plaster layer 14 thick, with a bias on the insulating layer 15 facing inside of the plaster layer 14, whereby a good hold of the expansion anchor 1 in the thermal insulation system 6 is guaranteed.
• the hole is drilled with the nominal diameter of the expansion anchor 1 in the thermal insulation composite system 6.
• the nominal diameter is the diameter in the expansion section 3 and at the front, smaller diameter end of the sealing portion 4 of the expansion anchor 2. Because the sealing portion 4 of the expansion anchor 1 widens conically to the rear, it lies with a bias and thereby sealingly against a hole wall of the hole in the plaster layer 14 on. Thereby, penetration of water into the hole and in the plaster layer 14, which has no paint in the hole as a protection, avoided. Due to its expansion, the sealing portion 4 is at least in a rear area, ie in a hole mouth, on the hole wall in the plaster layer 14, even if the hole has an excess.
• the expansion screw 7 is screwed through a hole in an object to be fastened 17 in the expansion anchor 1, which is thereby attached to the thermal insulation system 6. Is the expansion dowel 1 spread apart and thereby im Anchored the expansion element 7 against the rear end of the expansion anchor 1 and against the plaster layer 14, the object to be fastened 17 between a screw head 18 of the expansion screw 7 and the rear end of the expansion anchor. 1 or the plaster layer 14 clamped.
• a torque of the expansion screw 7 increases abruptly, ie clearly noticeable.
• the increase in torque signals the end of screwing in the expansion screw 7 and gives the feeling that the expansion anchor 1 is correctly spread and anchored.
• the torque increase can also be used to complete the screwing of the expansion screw 7 with a cordless screwdriver, if this has an adjustable torque coupling.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Dowels (AREA)
• Building Environments (AREA)

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• 2011
  • 2011-04-19 DE DE201110002165 patent/DE102011002165A1/de not_active Withdrawn
  • 2011-04-19 DE DE102011002163A patent/DE102011002163A1/de not_active Withdrawn
  • 2011-10-28 RU RU2013125572/12A patent/RU2013125572A/ru not_active Application Discontinuation
  • 2011-10-28 EP EP11791428.3A patent/EP2635818A1/de not_active Withdrawn
  • 2011-10-28 WO PCT/EP2011/005448 patent/WO2012059200A1/de active Application Filing
  • 2011-10-28 CN CN2011800531363A patent/CN103180619A/zh active Pending
  • 2011-10-28 EP EP11791429.1A patent/EP2635819A1/de not_active Withdrawn
  • 2011-10-28 WO PCT/EP2011/005447 patent/WO2012059199A1/de active Application Filing

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