SEALING ANCHOR SLEEVE

Description

[0001] The present invention relates to an anchor sleeve according to the preamble of claim 1 and an anchoring system according to the preamble of claim 14.

[0002] Anchor sleeves are used to fasten a heavy fixture, such as a sink or wall cabinet, to a substrate, particularly a building's masonry wall made of hollow bricks. The anchor sleeves are designed as sieve sleeves made of plastic. They feature numerous openings or perforations. A hole is first drilled into the substrate, and then the anchor sleeve is inserted into the hole. The anchor sleeve has a longitudinal interior space. A curing compound, such as mortar or one- or multi-component adhesive, is then injected into this interior space.Subsequently, an anchor rod is inserted into the interior containing the curable composite material. The composite is displaced by the anchor rod and forced through the exit openings into a space between the outer surface of the anchor sleeve and the substrate. After the composite material has cured, the anchor rod is securely and positively bonded to the substrate. Anchor sleeves with anchor rods are used particularly with hollow bricks because the cured composite material forms an undercut in the hollow brick's cavities, allowing for the positive transfer of significant forces from the anchor rod to the brick. However, these anchor sleeves with anchor rods are unsuitable for use in wet areas because they do not provide adequate sealing.Water and moisture can enter the borehole containing the anchoring system with the anchor sleeve and the anchor rod, thereby causing damage to the masonry as the anchoring base as well as to the anchoring system, especially to the anchor rod due to corrosion.

[0003] EP 1 370 774 B1 discloses an anchor sleeve for injection fastening, wherein the anchor sleeve has outlet openings for the exit of mortar injected into the anchor sleeve and wherein the anchor sleeve has inwardly projecting, deformable support elements that support an anchor rod inserted into the anchor sleeve, the support elements being designed as longitudinally or helically extending support ribs and the support ribs being arranged circumferentially offset to imaginary axial planes of the anchor sleeve.

[0004] EP 2 208 896 A1 shows an anchor sleeve for chemically anchoring an anchor rod in a borehole and the anchor sleeve has outlet openings for a hardening mass, wherein the anchor sleeve has a longitudinally extending joint which is bridged by a joint bridge which varies in length transverse to the joint.

[0005] US Patent 2004 / 250497 A1 discloses an anchor sleeve consisting of a frame and a tube. The tube has openings and is inserted into the frame. To create a connection when the anchor sleeve is positioned in a bore, adhesive is introduced into the interior of the frame. Subsequently, the adhesive is displaced from the anchor sleeve through the openings in the tube and through openings in the front axial section of the frame by inserting an anchor into the interior of the frame.

[0006] The object of the present invention is therefore to provide an anchor sleeve and an anchoring system for anchoring an anchor rod in a bore in an anchoring base with a curable composite material, in which a reliable and safe sealing of the bore is ensured after the anchor rod has been anchored and the composite material has cured.

[0007] This problem is solved by an anchor sleeve for anchoring an anchor rod in a bore in an anchoring base with a curable composite material, comprising an axially extending interior space bounded by an inner surface of the anchor sleeve for receiving the anchor rod and the curable composite material, outlet openings for the composite material injected into the interior space to exit outside the anchor sleeve into the bore, a front end, a rear end with an opening as the rear end of the interior space for introducing the anchor rod, wherein the anchor sleeve is notionally divided axially into an axial rear end region in the region of the rear end and into an axial main region outside the axial rear end region, and at the rear end region of the anchor sleeve the outer diameter of the anchor sleeve is smaller than the outer diameter at the main region, in particular smaller than 98%, 95%.90% or 80% of the outer diameter at the main region of the anchor sleeve, to form a sealing ring made of the composite material between a radial outer surface of the anchor sleeve at the rear end region and an inner surface of the bore in the anchoring base as a sealing area, so that the anchor sleeve forms a sealing anchor sleeve, wherein the outer diameter at the main region is preferably determined without considering local projections, in particular without positive locking elements. Preferably, the rear end region does not include the outermost rear end region, in particular not the setting flange. Preferably, the rear end region does not include the front end region, in particular not the front wall. Preferably, the rear end region does not include the main region. Preferably, the main region does not include the outermost rear end region, in particular not the setting flange. Preferably, the main region does not include the front end region.In particular, not the front wall. Preferably, the main area does not include the rear end area. Preferably, the outlet openings are formed, in particular exclusively, at the rear end area and the main area. Preferably, no outlet openings are formed at the outermost rear end area and the front end area. Preferably, the outlet openings are formed, in particular exclusively, on the radial outer surface of the anchor sleeve.

[0008] In a further embodiment, at the rear end region of the anchor sleeve, the ratio of the sum of the areas of the outlet openings of the anchor sleeve to the outer surface of the anchor sleeve with the outlet openings is greater, in particular by at least 5%, 10%, 20%, 30%, 40%, 50%, 100%, 200% or 300%, than in the main region, in order to facilitate the exit of the composite material at the rear end region compared to the main region and to enable sealing in a space between a radial outer surface of the anchor sleeve at the rear end region and the inner surface of the bore in the anchoring base as a sealing area, so that the anchor sleeve is formed as a sealing anchor sleeve and / or at the rear end region the area of ​​each outlet opening is larger than the, in particular maximum, area of ​​each outlet opening in the main region.Preferably, the area of ​​each outlet opening at the rear end region is larger than 2, 3, 5, 7 or 10 times the, in particular maximum, area of ​​each outlet opening at the main region.

[0009] In another variant, at the rear end area, the areas of at least 50% or 70% of the outlet openings, in particular all respective outlet openings, are larger than the, in particular maximum, area of ​​each outlet opening on the main area.

[0010] In an additional embodiment, the axial extent of the outlet openings at the rear end region is larger, in particular by a factor of 0.5, 1, 3, 5, 10 or 20, than the, in particular maximum, axial extent of the outlet openings at the main region.

[0011] Preferably, the anchor sleeve comprises longitudinal ribs aligned axially, particularly with a deviation of less than 30°, 20° or 10°. Preferably, the longitudinal ribs are straight.

[0012] In another embodiment, the anchor sleeve essentially comprises circumferential webs oriented radially, particularly with a deviation of less than 30°, 20°, or 10°. Preferably, the circumferential webs are curved, particularly with a constant radius of curvature. More preferably, the circumferential webs are essentially straight in the circumferential direction between each pair of longitudinal webs and have a curvature and / or a kink at the longitudinal webs.

[0013] In an additional embodiment, the circumferential webs are attached to a radial outer side of the longitudinal webs, so that the radial distance of the radial outer sides of the longitudinal webs to the central longitudinal axis of the anchor sleeve is smaller than the radial distance of the radial outer sides of the circumferential webs to the central longitudinal axis of the anchor sleeve.

[0014] In an additional embodiment, each outlet opening on the main area is limited, in particular exclusively, by two longitudinal webs and two circumferential webs.

[0015] In another variant, each outlet opening at the rear end area is limited by two longitudinal webs, a circumferential web and a setting flange.

[0016] In a supplementary embodiment, no circumferential ribs are formed at the rear end area.

[0017] In particular, at the rear end region of the anchor sleeve, the outer diameter of the anchor sleeve is smaller than the outer diameter at the main region of the anchor sleeve, and especially smaller than the outer diameter of the circumferential webs at the main region of the anchor sleeve, because no circumferential webs are formed at the rear end region and the radial distance of the radial outer sides of the longitudinal webs to the central longitudinal axis of the anchor sleeve is smaller than the radial distance of the radial outer sides of the circumferential webs to the central longitudinal axis of the anchor sleeve.

[0018] In a further embodiment, the radial outer surface of the anchor sleeve is formed, in particular exclusively, with a minimal radial distance to the central longitudinal axis at the rear end region of the anchor sleeve, in particular from the radial outer surfaces of the longitudinal webs.

[0019] Advantageously, the difference between the radial distance of the radial outer sides of the circumferential webs to the central longitudinal axis of the anchor sleeve and the radial distance of the radial outer sides of the longitudinal webs to the central longitudinal axis of the anchor sleeve corresponds essentially, in particular with a deviation of less than 30%, 20% or 10%, to the radial extent of the circumferential webs.

[0020] An anchoring system according to the invention for fixing a fixing object in a bore in an anchoring base with a curable composite material, comprising an anchor sleeve, an anchor rod, wherein the anchor sleeve is designed as an anchor sleeve as described in this patent application.

[0021] In another variant, the anchor rod is designed in two parts, comprising a main anchor rod and an additional component for fixing to the main anchor rod, preferably by positive and / or force-fit connection, in particular with a threaded and / or bayonet connection.

[0022] In a supplementary embodiment, the radial distance of the radial outer surfaces of the circumferential webs to the central longitudinal axis of the anchor sleeve is essentially constant, in particular with a deviation of less than 30%, 20% or 10%.

[0023] In a supplementary embodiment, the radial distance of the radial outer surfaces of the longitudinal webs to the central longitudinal axis of the anchor sleeve is essentially constant, in particular with a deviation of less than 30%, 20% or 10%.

[0024] In a supplementary embodiment, an outer diameter is a maximum outer diameter.

[0025] In a supplementary embodiment, an inner diameter is a minimum outer diameter.

[0026] Preferably, an inner diameter is a minimum inner diameter.

[0027] In an additional embodiment, the anchor sleeve is formed in one piece.

[0028] In another variant, the outer diameter of the setting flange essentially corresponds, in particular with a deviation of less than 30%, 20%, 10%, 5%, or 3%, to the outer diameter at the main area, taking into account local projections, especially the positive locking elements, and / or the outer diameter of the front wall. The outer diameter of the anchor sleeve at the setting flange, at the main area (taking into account local projections, especially the positive locking elements), and at the front wall are thus essentially identical, in particular with a deviation of less than 30%, 20%, 10%, 5%, or 3%.

[0029] Preferably, the outer diameter at the rear end region is smaller than outside the rear end region, in particular smaller than 98%, 95%, 90% or 80% of the outer diameter of the anchor sleeve outside the rear end region, i.e. smaller than the outer diameter of the anchor sleeve at the setting flange, at the main region taking into account the local projections, in particular the positive locking elements, and at the front wall.

[0030] In a supplementary embodiment, the anchor sleeve is, in particular, entirely made of plastic, especially thermoplastic and / or thermosetting and / or fiber-reinforced plastic.

[0031] In another variant, the anchor rod is made of metal and / or, preferably fiber-reinforced, plastic.

[0032] In an additional embodiment, the anchoring system includes the composite material.

[0033] Preferably, the composite material is mortar, in particular synthetic resin mortar, and / or one- or multi-component adhesive.

[0034] In another variant, the composite material of the anchoring system is stored in a container and / or a sample and / or in an injection syringe.

[0035] In another variant, the length as axial extension of the rear end region is between 2% and 40%, in particular between 5% and 25%, of the length of the anchor sleeve.

[0036] In a further embodiment, the length of the main section is between 40% and 80%, in particular between 60% and 80%, of the length of the anchor sleeve.

[0037] In a further embodiment, the length of the front end region, in particular the length of the front wall, is between 0.2% and 5%, in particular between 1% and 3%, of the length of the anchor sleeve.

[0038] In a further embodiment, the length of the outermost rear end region, in particular the length of the setting flange, is between 0.2% and 5%, in particular between 1% and 3%, of the length of the anchor sleeve.

[0039] Preferably the length of the anchor sleeve is between 1 cm and 50 cm, in particular between 3 cm and 20 cm.

[0040] In another embodiment, outlet openings are formed in the main region of the anchor sleeve. In another embodiment, outlet openings are formed in the rear end region of the anchor sleeve. Preferably, the number of outlet openings in the rear end region is greater than 3, 5, or 7. Preferably, the number of outlet openings in the main region is greater than 5, 20, 30, 50, or 70.

[0041] Preferably, the number of outlet openings on the main area is greater than the number of outlet openings on the rear end area, in particular greater than 2, 5, 10 or 20 times the number of outlet openings on the rear end area.

[0042] In a supplementary embodiment, the outer diameter of the anchor sleeve at the rear end region is smaller than that of a front end region, in particular a front wall as the front end region, of the anchor sleeve and / or smaller than that of an outermost rear end region, in particular a setting flange as the outermost rear end region, of the anchor sleeve, preferably forming a sealing ring made of the composite material between a radial outer surface of the anchor sleeve at the rear end region and an inner surface of the bore in the anchoring base as a sealing area, so that the anchor sleeve forms a sealing anchor sleeve.

[0043] In a further embodiment, a setting flange is formed at the rear end of the anchor sleeve for resting on the anchoring base and / or for arrangement in the bore in the anchoring base and for limiting the sealing ring to the outside of the bore.

[0044] Preferably, a setting flange is formed on the anchor sleeve, particularly at a rear end, to prevent the curable composite material from being squeezed out of the sealing ring.

[0045] Preferably, a setting flange is formed on the anchor sleeve, particularly at a rear end, as a stop element to limit the insertion of the anchor sleeve into the bore of the anchoring base, wherein preferably the setting flange has the maximum radial distance to a central longitudinal axis of the anchor sleeve in the radial direction and preferably the setting flange also serves to prevent the curable composite material from being squeezed out of the sealing ring.

[0046] In a further embodiment, the setting flange is designed as a radially projecting stop ring.

[0047] Preferably, the setting flange is designed essentially in the tangential direction as the circumferential direction. The setting flange has a radial extension, an axial extension, and a tangential extension, and the tangential extension, i.e., the circumferential extension, is 2, 4, 6, or 8 times greater than the radial and / or axial extension. Advantageously, the radial extension of the setting flange substantially corresponds to the axial extension of the setting flange, particularly with a deviation of less than 70%, 50%, 30%, or 10%.

[0048] In a further embodiment, the length of the rear end region of the anchor sleeve is at least 5%, 20%, 30% or 40% of the length of the anchor sleeve and / or less than 40%, 30% or 20% of the length of the anchor sleeve.

[0049] In a complementary variant, the interior of the anchor sleeve is bounded axially at its front end by a front wall, in particular a closed front wall. This advantageously prevents particles or parts from entering the interior at the front end of the anchor sleeve during insertion into the bore at the anchoring base.

[0050] Preferably, the outer diameter of the anchor rod as the main anchor rod corresponds substantially, in particular with a deviation of less than 30%, 20%, 10%, 5%, 3%, 2% or 1%, to the inner diameter of the opening at the rear end, in particular to the inner diameter of the interior at the longitudinal webs.

[0051] In a supplementary variant, at least one positive locking geometry, preferably a projection and / or a recess, in particular a thread, is formed on the anchor rod, in particular on the main anchor rod, for the positive locking fastening of the anchor rod to the hardened composite material.

[0052] Preferably, at least one positive locking geometry of the anchor rod is formed on a radial outer side of the anchor rod.

[0053] In another embodiment, the anchor rod is formed in one piece.

[0054] In an additional variant, the anchor rod is formed by a screw, in particular by only one screw. The term "anchor rod" thus preferably also includes a screw.

[0055] The anchor sleeve can be expanded from the anchor rod due to the elastic and / or plastic properties of the anchor sleeve.

[0056] An embodiment of the invention will be described in more detail below with reference to the accompanying drawings.

[0057] It shows: Fig. 1 a perspective view of an anchor sleeve with anchor rod as an anchoring system in a perforated brick as the anchoring base, Fig. 2 a side view of the anchor sleeve with anchor rod in the perforated brick according to Fig. 1 , Fig. 3 a side view of only the anchor sleeve according to Fig. 1 , Fig. 4 a perspective view of the anchor sleeve according to Fig. 1 with anchor rod, Fig. 5 a perspective view of only the anchor sleeve according to Fig. 1 , Fig. 6 an enlarged perspective view of a main area of ​​the anchor sleeve according to Fig. 1 , Fig. 7 a rear view of the anchor sleeve according to Fig. 1 , Fig. 8 another perspective view of only the anchor sleeve according to Fig. 1 , Fig. 9 a perspective view of a screw as an additional component of a two-part anchor rod and Fig. 10 a perspective view of a main anchor rod of the two-part anchor rod.

[0058] An anchor sleeve 1 serves to fix or anchor a fixing object 17, for example, an attachment 18. The fixing object 17 is, for example, a washbasin or a wall cabinet (not shown). An anchoring system 2 comprises the anchor sleeve 1 and an anchor rod 3. The anchor rod 3 is made of metal, special steel or stainless steel, and is two-part. The anchor rod 3 comprises a main anchor rod 4 and an additional component 8. The main anchor rod 4 has a thread 6 on a radial outer surface 5. At a rear end of the main anchor rod 4, a central threaded bore 7 with an internal thread is formed. The additional component 8 is a screw 9 with a screw head 10. The screw 9, with an external thread on the screw shank, can be screwed into the internal thread on the central threaded bore 7 of the main anchor rod 4 and thus be positively and / or force-fitted to the main anchor rod 4.

[0059] An anchoring base 11 is a perforated brick 12 ( Fig. 1 und 2 The perforated brick 12 has several cavities 13. To fasten, fix, or anchor the fixing object 17 to the anchoring base 11, a bore 14 is worked into the perforated brick 12. The anchoring base 11 is an interior wall in a building, and tiles 16 are attached to the interior wall with adhesive 15.

[0060] The anchor sleeve 1 is manufactured in one piece from plastic, in particular thermoplastic plastic, by injection molding. The anchor sleeve 1 has a front end 41 and a rear end 42. The anchor sleeve 1 has a central longitudinal axis 28, and an axial direction 29 or longitudinal direction 29 is aligned parallel to the central longitudinal axis 28. A radial direction 30 is aligned perpendicular to the central longitudinal axis 28, and a tangential direction 31 or circumferential direction 31 is aligned tangentially to an imaginary circle. This imaginary circle has a center point that corresponds to the central longitudinal axis 28, and this imaginary circle in an imaginary plane is perpendicular to the central longitudinal axis 28. The anchor sleeve 1 is symmetrical with respect to the central longitudinal axis 28. A front wall 50 is formed at the front end 41. The front wall 50 is divided into a central end wall 51 and a connecting wall 52.The central end wall 51 is oriented perpendicular to the central longitudinal axis 28. The annular connecting wall 52 completely encloses the central end wall 51 in the circumferential direction 31 and tapers conically towards the central end wall 51. The front wall 50 forms a front end region of the anchor sleeve 1. A setting flange 49 is formed at the rear end 42 of the anchor sleeve. The setting flange 49 forms an outermost rear end region of the anchor sleeve 1. The outer diameter of the setting flange 49 corresponds substantially to, in particular with a deviation of less than 30%, 20%, 10%, 5% or 3%, to the outer diameter of the front wall 50. The anchor sleeve 1 defines an essentially cylindrical interior space 32 on its inner side. The rear end of the interior space 31 is a rear opening 43 of the anchor sleeve 1. The opening 43 is bounded in the radial direction 30 by the setting flange 49.The setting flange 49 has a fully circumferential phase 61 as a conical taper 61 at its front and radial end to facilitate the insertion of the setting flange 49 into the bore 14 of the anchoring base 11.

[0061] The anchor sleeve 1 comprises longitudinal webs 23, which are essentially aligned in the axial direction 29. Circumferential webs 24 of the anchor sleeve 1 are aligned in the circumferential direction 31. The longitudinal webs 23 connect the annular setting flange 49 to the closed front wall 50 in the axial direction 29. The radial inner surfaces 27 of the longitudinal webs 23 exhibit a minimal radial distance to the central longitudinal axis 28 in a section perpendicular to the central longitudinal axis 28 at the interior space 32. The interior space 32 has a minimum inner diameter 33 at the longitudinal webs 23. The circumferential webs 24 are attached to the radial outer surface 25 of the longitudinal webs 23. The difference between the radial distance 46 of the radial outer surface 26 of the circumferential webs 24 to the central longitudinal axis 28 and the radial distance 48 of the radial outer surface 25 of the longitudinal webs 23 to the central longitudinal axis 28 thus corresponds to the thickness or the radial extent of the circumferential webs 24.

[0062] The anchor sleeve 1 is notionally divided in the axial direction 29 between the setting flange 49 and the front wall 50 into a rear end region 57 and a main region 56. Both the longitudinal webs 23 and the circumferential webs 24 are formed on the main region 56. The rear end region 57 has no circumferential webs 24 and only the longitudinal webs 23. Outlet openings 34, acting as sieve holes 34, serve to guide a curable composite material, for example mortar, in particular synthetic resin mortar, or one- or multi-component adhesive, from the interior 32 through the outlet openings 34 into a space outside the anchor sleeve 1, i.e., into an annular space between the bore 14 in the anchoring base 11 and the anchor sleeve 1, as well as into the cavities 13. The outlet openings 34 are bounded as outlet openings 35 on the main area 56 by the longitudinal webs 23 and the circumferential webs 24.Only the foremost outlet openings 35 in the axial direction 29 are bounded forward in the axial direction 29 by the front wall 50. The outlet openings 34, designated as outlet openings 36 at the rear end region 57, are bounded by the longitudinal webs 23, the setting flange 49, and the rearmost circumferential web 24. Each outlet opening 36 at the rear end region 57 is thus bounded by two longitudinal webs 23, the setting flange 49, and the rearmost circumferential web 24. The longitudinal webs 23 are parallel to each other and aligned in the axial direction 29, so that the radial extent 39 of the outlet openings 35 at the main region 56 corresponds to the radial extent 40 of the outlet openings 36 at the rear end region 57. The axial extent 38 of the outlet openings 36 at the rear end region 57 is significantly larger, i.e. approximately 15 times larger, than the axial extent 37 of the outlet openings 35 at the main region 56.This is due to the large number of circumferential webs 24 on the main region 56. The axial extent 38 of the outlet openings 36 at the rear end region 57 corresponds to the length 60 as the axial extent 29 of the rear end region 57. The ratio of the sum of the areas of the outlet openings 34, 36 of the anchor sleeve 1 to the radial outer surface of the anchor sleeve 1 at the rear end region 57 is greater than the ratio of the sum of the areas of the outlet openings 34, 35 of the anchor sleeve 1 to the radial outer surface of the anchor sleeve 1 at the main region 56 of the anchor sleeve 1. The main region 56 has a length 59. The anchor sleeve 1 has a length 58 as the axial extent 29 between the front end 41 and the rear end 42. Fig. 3 The length 60 of the rear end region 57 corresponds approximately to 20% of the length 58 of the anchor sleeve 1.

[0063] In the circumferential direction 31, positive locking elements 53 are formed as radial projections 53 on every second longitudinal web 24, i.e., on a total of 4 out of 8 longitudinal webs 24. The positive locking elements 53 ( Fig. 6 The positive locking elements 53 have a front face 55 and a back face 54. The back face 54 is oriented substantially, i.e., with a deviation of less than 30°, 20°, or 10°, in a radial direction 30. The front face 55 is oriented at an acute angle, for example, in a range between 10° and 50°, to an axial direction 29. The front face 55 of the positive locking elements 53 thus act as ramps or wedges during the insertion of the anchor sleeve 1 into the bore 14, so that the positive locking elements 53 do not substantially cause any blockage during the insertion of the anchor sleeve 1 into the bore 14. After the composite material has hardened, the back face 54 provides a positive locking fixation of the anchor sleeve 1 to the hardened composite material.

[0064] The outer diameter 47 at the rear end region 57 of the anchor sleeve 1 corresponds to twice the radial distance 48 of the radial outer surface 25 of the longitudinal webs 23 from the central longitudinal axis 28. The radial distance 46 of the radial outer surface 26 of the circumferential web 24 to the central longitudinal axis 28 is greater than the radial distance 48 by the amount of the thickness or radial extent of the circumferential webs 24. The outer diameter 47 at the rear end region 57 is therefore smaller by twice the amount of the thickness of the circumferential webs than the outer diameter at the main region 56 of the anchor sleeve 1 without considering the positive locking elements 53, i.e., only with respect to the circumferential webs 24. The outer diameter 44 at the main region 56 of the anchor sleeve 1, taking into account the positive locking elements 53, corresponds essentially to, i.e., with a deviation of less than 30%, 20%, 10%, 5%. % or 3%, the outer diameter 45, the front wall 50. In Fig. 3 The outer diameter 45 is shown without taking into account the positive locking elements 53. The outer diameter 44 of the setting flange 44 corresponds essentially, i.e., with a deviation of less than 30%, 20%, 10%, 5% or 3%, to the outer diameter 44 at the main area 56 taking into account the positive locking elements 53 and / or the outer diameter 44 of the front wall 50.

[0065] To fix the fixing object 10 to the anchoring base 11, i.e., the perforated brick 12, the bore 14 is machined into the perforated brick 12 as a borehole 14 with a substantially constant diameter. The diameter of the bore 14 is slightly larger than or equal to the outer diameter 44 of the setting flange 49, the outer diameter 44 of the main section 59, and the outer diameter of the front wall 50. The anchor sleeve 1 thus has a substantially identical outer diameter 44 at the setting flange 49, at the main section 59 (taking into account the positive locking elements 53), and at the front wall 50. Subsequently, the anchor sleeve 1 is inserted into the bore 14, starting with the front end 41, until the rear end 42 of the anchor sleeve 1 is completely positioned in the bore 14, i.e., the rear end 42 is flush with the outer tile 16.The positive locking elements 53 also serve to centrically align the anchor sleeve 1 in the bore 14 during its insertion. The curable composite material is then injected into the interior 32, which is substantially filled with the composite. The main anchor rod 4 is then inserted into the interior 32, displacing the composite material through the outlet openings 34 into an annular space between the anchor sleeve 1 and the bore 14, as well as into the cavities 13 of the hollow brick 12. The outer diameter 47 at the rear end region 57 of the anchor sleeve 1 is smaller than the outer diameter 45 at the main region 59, excluding the positive locking elements 53.The radial extent of the space is thus greater at the rear end region 57 than outside the rear end region 57, so that a cylindrical sealing ring 19 forms in the radial direction 30 between the rear end region 57 and the bore 14. The sealing ring 19 has a large radial extent and is completely filled with the curable composite material. The outlet openings 36 at the rear end region 57 are larger than the outlet openings 35 at the main region 56, so that the composite material preferentially exits through the outlet openings 36 by means of displacement and compression compared to the smaller outlet openings 35. Due to its outer diameter 44, which is only slightly smaller than or equal to the diameter of the bore 14, the setting flange 49 prevents composite material from escaping from the cylindrical sealing ring 19 outside the bore 14.The setting flange 49 thus acts as a ring seal for the uncured composite material in the annular space between the radial outer surface of the setting flange 49 and the bore 14. The outer diameter of the anchor rod 3, also known as the main anchor rod 4, corresponds essentially to the minimum inner diameter 33 of the opening 43 at the rear end 42 on the longitudinal webs 23, so that essentially no composite material is squeezed out of the opening 43 during the insertion of the anchor rod 3, also known as the main anchor rod 4, into the interior 32. The radial inner surfaces of the longitudinal webs 23 serve to guide and slide the anchor rod 3, also known as the main anchor rod 4, during its insertion into the interior 32. After the composite material has cured, the anchor sleeve 1 and the main anchor rod 4 are positively and materially locked to the anchoring base 1.This is improved in particular by the cured composite material in the cavities 13 as an undercut of the composite material and by the additional positive locking elements 53. The thread 6 on the radial outer side 5 of the main anchor rod 3 serves as a positive locking geometry for the positive locking fastening of the main anchor rod 4 to the cured composite material. After the composite material has cured, the screw shank of the screw 9 is screwed into the central threaded bore 7 of the main anchor rod 4, thus securing the attachment 18 as the fixing element 17 as shown in the illustration in . Fig. 1 und 2 attached to the anchoring base 11.

[0066] Overall, the anchor sleeve 1 and the anchoring system 2 according to the invention offer significant advantages. The small outer diameter 47 at the rear end region 57 and the large outlet openings 36 at the rear end region 57 enable the sealing ring 19 to be completely and reliably filled with the composite material. This allows the anchoring system 2 to be used to fasten the fixing object 17 even in a damp room, for example, a bathroom in an apartment. The completely filled sealing ring 19 with the composite material ensures a reliable seal, preventing water and / or moisture from entering the bore 14 from outside.

Claims

1. Anchor sleeve (1) for anchoring an anchor rod (3) in a bore (14) in an anchoring surface (11) using a curable composite material, comprising - an interior (32), which extends in the axial direction (29) and is limited by an inside (27) of the anchor sleeve (1), for receiving the anchor rod (3) and the curable composite material, - outlet openings (34) for allowing the composite material that is injected into the interior (32) to exit out of the anchor sleeve (1) and into the bore (14), - a front end (41), - a rear end (42) having an opening (43) as the rear end of the interior (32) for the insertion of the anchor rod (3), characterised in that the anchor sleeve (1) is fictitiously divided, in the axial direction (29), into an axial rear end region (57) in the region of the rear end (42) and into an axial main region (56) outside the axial rear end region (57) and, at the rear end region (57) of the anchor sleeve (1), the outer diameter (47) of the anchor sleeve (1) is smaller than the outer diameter (45) at the main region (56) of the anchor sleeve (1) so as to form a sealing ring (19) made of the composite material between a radial outside (25) of the anchor sleeve (1) at the rear end region (57) and an inside of the bore (14) in the anchoring surface (11) as a sealing region (21) so that the anchor sleeve (1) formed a sealing anchor sleeve (1).

2. Anchor sleeve according to claim 1, characterised in that at the rear end region (57) of the anchor sleeve (1), the ratio of the sum of the faces of the outlet openings (34, 35, 36) of the anchor sleeve (1) to the outer face of the anchor sleeve (1) having the outlet openings (34, 35, 36) is greater than the main region (56), in order to facilitate the exit of the composite material at the rear end region (57) compared to the main region (56) and to allow sealing in a space between a radial outside (25) of the anchor sleeve (1) at the rear end region (57) and the inside of the bore (14) in the anchoring surface (11) as a sealing region (21) so that the anchor sleeve (1) formed a sealing anchor sleeve (1) and / or, at the rear end region (57), the face of each outlet opening (34, 36) is larger than the face of each outlet opening (34, 35) at the main region.

3. Anchor sleeve according to claim 1 or 2, characterised in that at the rear end region (57), the faces of at least 50% or 70% of the outlet openings (34, 36), in particular of all the respective outlet openings (34, 36), are larger than the face of each outlet opening (34, 35) at the main region (57).

4. Anchor sleeve according to one or more of the preceding claims, characterised in that the axial extent (38) of the outlet openings (34, 36) at the rear end region (57) is larger, in particular 0.5, 1, 3, 5, 10 or 20 times larger, than the axial extent (37) of the outlet openings (34, 35) at the main region (56).

5. Anchor sleeve according to one or more of the preceding claims, characterised in that the anchor sleeve (1) comprises longitudinal ribs (23) which are orientated substantially in the axial direction (29).

6. Anchor sleeve according to one or more of the preceding claims, characterised in that the anchor sleeve (1) comprises circumferential ribs (24) which are orientated substantially in the radial direction (31).

7. Anchor sleeve according to claims 5 and 6, characterised in that the circumferential ribs (24) are attached to a radial outside (25) of the longitudinal ribs (23) such that the radial distance (48) of the radial outsides (25) of the longitudinal ribs (23) from the central longitudinal axis (28) of the anchor sleeve (1) is smaller than the radial distance (46) of the radial outsides (26) of the circumferential ribs (24) from the central longitudinal axis (28) of the anchor sleeve (1).

8. Anchor sleeve according to one or more of claims 5 to 7, characterised in that each outlet opening (34, 35) at the main region (56) is limited by two longitudinal ribs (23) and two circumferential ribs (24).

9. Anchor sleeve according to one or more of claims 5 to 8, characterised in that each outlet opening (34, 36) at the rear end region (57) is limited by two longitudinal ribs (23), a circumferential rib (24) and a setting flange (49).

10. Anchor sleeve according to one or more of claims 5 to 9, characterised in that no circumferential ribs (24) are formed at the rear end region (57).

11. Anchor sleeve according to one or more of claims 5 to 10, characterised in that at the rear end region (57) of the anchor sleeve (1), the outer diameter (47) of the anchor sleeve (1) is smaller than the outer diameter (45) at the main region (56) of the anchor sleeve, in particular is smaller than the outer diameter (45) of the circumferential ribs (24) at the main region (56) of the anchor sleeve, because no circumferential ribs (24) are formed at the rear end region (57) and the radial distance (48) of the radial outsides (25) of the longitudinal ribs (23) from the central longitudinal axis (28) of the anchor sleeve (1) is smaller than the radial distance (46) of the radial outsides (26) of the circumferential ribs (24) from the central longitudinal axis (28) of the anchor sleeve (1).

12. Anchor sleeve according to one or more of the preceding claims, characterised in that the radial outside (26) of the anchor sleeve (1) is formed, in particular exclusively, at a minimum radial distance (48) from the central longitudinal axis (28) at the rear end region (57) of the anchor sleeve (1), in particular from the radial outsides (26) of the longitudinal ribs (23).

13. Anchor sleeve according to one or more of the preceding claims 6 to 12, characterised in that the difference between the radial distance (46) of the radial outsides (26) of the circumferential ribs (24) from the central longitudinal axis (28) of the anchor sleeve (1) and the radial distance (48) of the radial outsides (25) of the longitudinal ribs (23) from the central longitudinal axis (28) of the anchor sleeve (1) corresponds substantially to the radial extent of the circumferential ribs (24).

14. Anchoring system (2) for securing an object to be secured (17) in a bore (14) in an anchoring surface (11) using a curable composite material, comprising - an anchor sleeve (1), - an anchor rod (3), characterised in that the anchor sleeve (1) is designed according to one or more of the preceding claims.

15. Anchoring system according to claim 14, characterised in that the anchor rod (3) is designed in two parts, comprising a main anchor rod (4) and an additional component (8) to be secured to the main anchor rod (4), preferably form-fittingly and / or frictionally.