• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    EXPANSION ANCHOR BOLT. The present invention relates to an expansion bolt (1) with a pin (10) having a neck area (11) and an expansion area adjacent to the neck area, in which the pin narrows towards the area. of the neck, the pin having a groove in the neck area, which groove extends along the pin, and has an expansion sleeve which surrounds the pin at least partially and which has a thread on its inner side, the fillet fits in the groove in the neck area, at least in some regions, and the wall thickness of the expansion sleeve is locally increased by the fillet, where the expansion sleeve can be moved along the pin out of the neck area , into the expansion area, during radial flare of the expansion sleeve. According to the invention, as the expansion sleeve is moved from the neck area into the expansion area, the thread reaches the expansion area, at least in some regions, and is forced radially outwards by the area of expansion.
    公开号:BR112016005386B1
    申请号:R112016005386-9
    申请日:2014-09-02
    公开日:2021-05-18
    发明作者:Marc Schaeffer
    申请人:Hilti Aktiengesellschaft；
    IPC主号:
    专利说明:

    [001] The present invention relates to an expansion anchor. An expansion anchor of this type is equipped with a pin that has a neck area and an expansion area adjacent to the neck area, whereby, in this expansion area, the pin narrows towards the neck area, the pin showing a groove in the neck area, which extends along the pin, and with an expansion sleeve that surrounds the pin at least partially and which, on its inner side, has a thread, the thread at least in certain areas, fits into the groove in the neck area, and by means of the fillet, the wall thickness of the expansion sleeve is increased in place, and the expansion sleeve, upon radial expansion of this expansion sleeve, can be moved along of the pin, out of the neck area, reaching the expansion area.
    [002] Expansion anchors are known, for example, from DE 101 08 844 A1. They are inserted into a perforation in a base, such as a wall or ceiling of a module. By introducing the expansion area of the pin into the expansion sleeve, the expansion sleeve will be radially enlarged and the expansion bolt will be anchored to the base. Commonly, the pins of such expansion bolts have an essentially circular cross section.
    [003] From patent EP 2 309 138 A2, an expansion anchor became known, in which the expansion area has corners that extend parallel to the longitudinal axis. EP 0 515 916 A2 and DE 2 256 812 A1 describe expansion anchors, in which, by means of a groove guide, a protection against rotation of the expansion anchor on the pin is formed.
    [004] It is the object of this invention to propose an expansion bolt, which, with reduced manufacturing effort and high degree of reliability, achieves especially good load values.
    [005] The task will be solved by an expansion anchor with the characteristics of the present invention. Preferred modalities are indicated in the embodiments.
    [006] An expansion bolt, according to the invention, is characterized by the fact that, when the expansion sleeve is displaced from the neck area to the expansion area, the thread, at least in certain areas, it reaches the expansion area, being forced by the expansion area radially outwards.
    [007] It is the starting point of the invention a dilemma that can limit the load values in conventional expansion anchors with a cross section of pin in a circular shape. Thus, on the one hand, in order to provide a good anchorage to the orifice wall, a thicker possible glove thickness is often desired, since with increasing glove thickness, the maximum radial expansion of the expanded glove can be increased, and may in this way , the anchoring to the hole wall be improved. On the other hand, however, the sleeve will have to be inserted into the neck area in an unexpanded state. If, now, with a view to good anchoring, a large sleeve thickness is selected, then the diameter of the pin in the neck area will have to be correspondingly reduced in order to receive the sleeve, which may imply a corresponding decrease in load of breakage of the pin. Although, therefore, to improve the extraction values it would be advantageous to increase the thickness of the sleeve, this is often not possible in prior art anchors without weakening the pin, so that the load capacity of the overall system cannot be randomly increased by increased glove thickness.
    [008] At this point, the present invention applies, proposing to provide in the glove at least one thread that protrudes inside the glove and that forms a localized increase in wall thickness, providing, in the area of the neck of the pin, a groove corresponding, at least partially, receiving the thread in an unexpanded state. Contrary to the anchor bolts of European patents EP O 515 916 A2 and DE 2 256 8 12 A1, in which the threads serve only as protection against rotation, according to the present invention the thread is arranged in such a way that - in the use of the anchor for which was intended - meets an oblique face in the expansion area, being forced radially outwards. In view of the fact that the wall thickness in the fillet according to the invention is increased on site, an especially large maximum radial expansion of the expanded sleeve and, therefore, an especially good anchorage can be achieved in this way. At the same time, however, according to the invention, the pin will not be essentially weakened in the area of its neck, because - according to the invention - the increase in wall thickness is restricted to the thread, so that to receive the increase of the wall thickness a narrow groove in the neck area will suffice. Contrary to the above-mentioned prior art, an especially large expansion can in this way be obtained without essentially weakening the pin. Therefore, according to the invention, particularly good load values can be obtained. The apparent dilemma described above could be resolved.
    [009] In the neck area, the pin preferably has a cross-section in the longitudinal direction, at least in certain areas. In the expansion area, the pin widens towards its tip, that is, with increasing distance from the neck area. This can comprise, in particular, that the circumscribed diameter of the cross section of the pin, the diameter of the inscribed circle of the cross section of the pin and/or its transverse face become larger with increasing distance from the neck area. The groove and/or the fillet preferably project parallel to the longitudinal axis of the expansion bolt and/or anchor. Since the radial direction and the longitudinal direction are addressed here, this should especially refer to the longitudinal axis of the pin and/or anchor which can be, in particular, the symmetric axis and/or the central axis of the pin, i.e. anchor bolt. With the expression 'local increase in wall thickness' it can preferably be understood that the wall thickness in the fillet is greater than that around it.
    [0010] The expansion sleeve and the pin preferably consist of metallic material. Preferably, the pin has in its end area, opposite the area of expansion, an external thread for a nut. A stop, for example, an annular shoulder, may be specially configured on the pin, which limits the displacement of the sleeve from the expansion area. The expansion sleeve, which can also be configured in multiple segments, can however also extend to the external thread of the pin. According to the invention, the expansion area is provided for the expansion of the expansion sleeve, that is, for the radial expansion of the expansion sleeve.
    [0011] The thread that fits in the groove in the pin can also form a protection against rotation that inhibits a rotation of the expansion sleeve relative to the pin, around the longitudinal axis of the pin. Basically, the fillet could have breaks. Preferably, however, the thread is continuous.
    [0012] In order for the thread to be reliably activated, that is, pressed with the wall of the surrounding hole, with load removal, normally the thread should extend as far as possible to the front front side of the expansion sleeve, or that is, towards the front side that faces the expansion area. Therefore, it is especially preferred that the distance of the fillet from the front side of the expansion sleeve, facing towards the expansion area, is less than 10 times, 5 times, twice, once, or than half the height of the fillet. Alternatively or additionally, for the same reason, it may be foreseen that the distance of the fillet from the front side of the expansion sleeve, facing the direction of the expansion area, is smaller than the length, measured in the longitudinal direction of the expansion slot shorter than the expansion sleeve, and that the distance is especially less than 0.5 times, 0.25 times or 0.1 times this length. Alternatively, or on an additional basis, for the same reason it may be foreseen that the thread extends to the third front part or up to the fourth front part of the expansion sleeve. Under the expression 'fillet height' one can understand in particular the maximum difference in the wall thickness of the expansion sleeve between the thread and its surroundings.
    [0013] Another advantageous modality of the invention resides in that the groove, provided in the area of the neck of the pin, extends to the area of expansion of the pin. In this configuration, the relatively rigid fillet does not need to be prematurely bent and opened and at the beginning of the process of applying the anchor, the expansion sleeve will be able to penetrate, especially reliably, into the wall area of the surrounding hole. The groove provided in the neck area of the pin may also extend into the expansion area of the pin, which can further improve the expansion behavior, especially at the beginning of the anchor bolt application process.
    [0014] It is especially convenient that the pin has in the neck area a plurality of grooves extending along the pin and that the expansion sleeve has on its inner side a plurality of threads, whereby the wall thickness of the sleeve is expansion is increased at the respective location and which fit, at least in certain areas, in one of the grooves in the neck area. Preferably, on displacement of the expansion sleeve from the neck area to the expansion area, several of the threads, especially all the threads, at least in certain areas, reach the expansion area, being forced by the expansion area radially outwards. In this mode, therefore, several threads can act in the aforementioned manner and shape, so that the maximum radial expansion of the sleeve can still be further improved without essentially weakening the neck area of the pin. Suitably, the number of grooves in the neck area will match the number of fillets in the sleeve.
    [0015] If several grooves are provided in accordance with the invention, the features described in this application can be realized in a single groove, with several grooves or with all these grooves. In an additional or alternative character - provided that several threads are foreseen according to the invention - the characteristics described in this application can be implemented in a single thread, in several threads or with all these threads.
    [0016] It is especially preferred that the pin has in the expansion area - at least in parts - a non-circular cross-section, that is, especially, a cross-section that diverges from a circular shape. This modality may take into account that the expansion sleeve, due to the fillet, also has a non-circular cross section on its inner side. With a non-circular cross section in the expansion area, the expansion behavior of the expansion sleeve, internally non-circular, can be influenced and improved in a controlled way.
    [0017] It may be foreseen, for example, that in the expansion area, in the extension of the groove, the pin presents - at least in certain areas - an incline greater than in the lagged direction for the groove, especially lagged in the circumferential direction in the direction of the slot. Preferably, therefore, the area of the expansion in the extension of the groove of the neck area has a greater slope in the radial direction than in the position out of phase with the groove, that is to say that the opening angle, considered from the area of the neck in the extension of the groove - and at least in certain areas - is greater than in a circumferential direction out of phase with the groove. According to this modality, the increase in the wall thickness, formed by the thread, will also be expanded particularly intensely, so that an especially high measure of expansion can be obtained. In a direction out of phase with the groove, the slope of the lateral face of the pin can also be negative, which can simplify the fabrication. As long as the incline is addressed here, it may refer especially to the longitudinal axis of the pin, as an abscissa, and in relation to an axis that projects perpendicularly to the longitudinal axis through the neck area, especially through the groove, it can be refer as an ordinate, which means that, with a positive slope, the distance of the lateral face of the pin from the longitudinal axis increases in an increasing way from the neck area and, in the case of a negative slope, it decreases the distance of the lateral face of the longitudinal axis pin, with increasing distance from the neck area.
    [0018] Alternatively or additionally, the pin may present in the expansion area, in the extension of the groove, at least in certain areas, an incline smaller than out of phase in relation to the groove. In this way, for example, the expansion of the relatively rigid thread can be slowed down and the expansion sleeve can penetrate into the wall of the surrounding hole especially reliably at the beginning of the anchor bolt application process.
    [0019] Another preferred extension of the invention resides in that in the neck area, especially in the area of at least one groove, and/or in the area of expansion, at least in segments, the pin has a rotational symmetry cross section. With the expression 'rotational symmetry' it can be understood in particular that a rotation of the pin around a certain angle, around its longitudinal axis, again produces a concealment of the pin with itself. The expansion sleeve may also have a rotating symmetry cross section, deviating, however, from any existing expansion slots in the sleeve. In the case of a rotationally symmetrical cross-section, the tensile forces can be picked up by the pin particularly evenly, so that especially high load values can be achieved when using a particularly small material.
    [0020] In the expansion area, conveniently the lateral face of the pin continuously follows the lateral face of the pin in the neck area. According to this modality, a direct passage is provided between the neck area and the expansion area. This can further improve the expansion behavior, especially at the beginning of the anchor bolt application process.
    [0021] Another advantageous modality of the invention resides in that the fillet has a chamfer at its end facing the direction of the expansion area. In this way, among other actions, the relatively rigid fillet can be made more flexible on the inlet side and, at the beginning of the anchor bolt application process, the expansion sleeve can be applied especially reliably to the wall of the surrounding hole.
    [0022] It may also be foreseen that, in a concavity, especially in the groove, the pin presents a coating of a glue that can be activated by the expansion sleeve, especially by the thread. For example, the glue provided for in the concavity may have a microencapsulated shape, so that it becomes activated by the pressure exerted by the expansion sleeve. Alternatively, a substance that chemically activates the glue may also be provided in the expansion sleeve. The glue can fix the sleeve to the pin in an expanded state, so that a connection with a special load capacity can be provided. Based on the arrangement in a concavity, moreover, the glue is particularly well protected against premature activation or removal by friction, so that an especially high degree of reliability is provided. The concavity with the glue can basically be foreseen both in the neck area as well as in the top area. Especially preferably, the concavity in question is, however, formed by the groove in the area of the neck which receives the thread. As in this case the slot fulfills a multiple function, the manufacturing effort is particularly reduced.
    [0023] It may also be provided, on an additional or alternative basis, that the glove presents in a concavity an adhesive coating that can be activated by the pin.
    [0024] The invention also encompasses a manufacturing method, in which an expansion anchor is produced according to the invention, in which, from a first blank, the expansion anchor pin will be formed, with a second blank will form the expansion bolt expansion sleeve. The first blank can be a wire segment, on which the expansion area is profiled, for example, by pressing or rolling. The second blank could be a plate of a sheet, bent into the shape of a sleeve.
    [0025] It is especially preferred that the fillet be produced on the inner side of the expansion sleeve in a lamination process. In this lamination process, other functional elements of the glove can also be profiled, such as projections on the outside or steps near the end.
    [0026] Preferably, in at least one profile rolling mill, used in a rolling process, the axis of rotation will have at least an angle of less than 45° with respect to the fillet.
    [0027] In addition, it may be provided that, after profiling the groove, a coating liquid is applied on the first blank and this first blank will then be made to rotate around its longitudinal axis, so that the coating liquid is enriched outside the groove, hardening there with localized thickness of larger layer. According to this modality, the cross section of the special pin according to the invention, in connection with a rotational coating process, will be used to produce a controlled heterogeneous coating, with which additional functionality can be obtained.
    [0028] The invention also relates to an assembly consisting of a substrate with a hole and an expansion anchor according to the invention that is inserted in the hole, the pin expansion area compressing the expansion sleeve in its thread against the wall of the hole. Therefore, the expansion bolt is anchored in the hole, the expansion sleeve being activated in the fillet, meaning that the expansion sleeve is pressed with the hole wall directly into the fillet. The substrate can be especially a concrete substrate.
    [0029] In the following, the invention will be explained in more detail on the basis of preferred embodiments, shown schematically in the attached Figures, and individual characteristics of the embodiments shown below, in the context of the invention can basically be performed individually or in random combination. The Figures show schematically:
    [0030] Figure 1 - schematic surface view, partially in longitudinal section, of an expansion anchor according to the invention, introduced into a concrete substrate;
    [0031] Figure 2 - side view of the expansion anchor pin of Figure 1;
    [0032] Figure 3 - cross-sectional view A-A according to Figure 2 by the expansion anchor pin with the expansion sleeve of Figure 7, in expanded state;
    [0033] Figure 4 - cross-sectional view B-B, according to Figure 2, by the expansion anchor pin with the expansion sleeve of the Figure in an expanded state;
    [0034] Figure 5 - C-C cross-sectional view according to Figure 2 by the expansion anchor pin, with the expansion sleeve of Figure 7 in an expanded state;
    [0035] Figure 6 - perspective view of the pin tip area of Figure 2;
    [0036] Figure 7 - perspective view of an expansion sleeve of the expansion anchor of Figure 1, corresponding to the pin of Figure 2;
    [0037] Figure 8 - view of the expansion sleeve of Figure 7 from the front;
    [0038] Figure 9 - view of the expansion sleeve of Figure 7 from the side;
    [0039] Figure 10 - view of the expansion sleeve of Figure 7 from the rear; and
    [0040] Figure 11 - view in longitudinal section A-A, according to Figure 8, through the expansion sleeve.
    [0041] The Figures show an example of implementation of an expansion anchor 1, according to the invention. As especially shown in Figure 1, the expansion anchor 1 has a pin 10 and an expansion sleeve 20 which surrounds the pin 10. The pin 10 has a neck area 11 of essentially constant cross-section and, in connection with the neck area 11, in the front end area of the pin 10, has an expansion area 12 for the expansion sleeve 20, in which the pin 10, starting from the neck area 11, is flared towards its front end. On the side of the neck 11 area, away from the expansion area 12, the pin 10 has a stop 17 for the expansion sleeve 20, configured, for example, as an annular shoulder. In its rear end area, opposite the expansion area 12, pin 10 has an external thread 18 for a nut 8.
    [0042] In the application of the expansion anchor 1, the pin 10 will be inserted, with the expansion area 12 in front, in the direction of the longitudinal axis 100 of the pin 10, into a hole drilled in the substrate 5 of Figure 1. By virtue of of the stop 17, in this procedure also the expansion sleeve 20 is being introduced into the hole. Then, pin 10, for example, by tightening nut 8, will again be pulled out of the hole to a certain extent. Based on its friction with the wall of the hole, the expansion sleeve 20 remains there, a displacement of the pin 10 taking place relative to the expansion sleeve 20, in which the area of the expansion 12 of the pin 10 thus penetrates deeper and deeper such that the expansion sleeve 20 is radially enlarged on the expansion sleeve 20 by the expansion area 12 of the pin 10 being compressed with the wall of the drilled hole. Through this mechanism, the expansion anchor 1 will be fixed to the substrate 5. The applied state of the expansion anchor 1, in which it is fixed to the substrate 5, is shown in Figure 1, but also in Figures 3 to 5. By means of the nut 8, a mounting component 6 may be attached to substrate 5.
    [0043] As shown in particular in Figures 2, 3 and 6, in its neck area 11 the pin 10 has several slots 15 - in the example of embodiment shown, six slots 15. These slots 15 extend in a converging direction parallel and in parallel to the longitudinal axis 100 of the pin 10, preferably starting from the stop 17, to the area of expansion 12. In the cross section (Figure 3), the pin 10 has a non-circular shape in the area of the neck 11, preferably an undulating shape, whereby the valleys of the waves are formed by the grooves 15. The flanks of the grooves 15 extend in the cross section of the pin 10 preferably continuously. Basically, the flanks of the grooves 15, however, could also constitute a form of step.
    [0044] As especially shown in Figures 7, 8, 10 and 11, on its inner side, the expansion sleeve 20 has a plurality of threads 25 - in the example shown there are six threads 25. The number of threads 25 on the side inner expansion sleeve 20 preferably corresponds to the number of grooves 15 in the neck 11 area of pin 10 or is less than the number of grooves 15. Threads 25 extend reciprocally parallel and converging and parallel to the longitudinal axis 100 of the pin. In the cross section (figures 3 to 5 and 8) the expansion sleeve 20 preferably has an internal wave shape, the wave peaks being formed by the threads 25. The flanks of the threads 25, in the cross section of the expansion sleeve 20, extend. if preferably in continuous form. Basically, the flanks of the fillets 25 could, however, also form a step shape. In the threads 25, the expansion sleeve 20 has a greater wall thickness than in the circumferential direction out of phase with the threads 25, as, for example, can be seen in Figures 3 and 8.
    [0045] As especially shown in the cross-sectional view of Figure 3, the threads 25 of the expansion sleeve 20 penetrate into the grooves 15 in the neck 11 area of the pin 10. The threads 25 extend to the front front face 21 of the sleeve. of expansion 20, that is, up to that front side which faces towards the area of expansion 12 of the pin 10, being spaced away from the stop 17.
    [0046] In the expansion area 12 of the pin 10, the circumscribed circle of the pin 10 increases around the longitudinal axis 100 with increasing distance from the area of the neck 11 (see Figures 2 to 5). The opening angle of the pin 10 in the area of the expansion 12 varies, however, in the circumferential direction of the pin 10, as can be recognized especially in Figures 2 and 6. In the embodiment of Figures 2 and 6, the incline of the pin 10 in the area of the expansion 12, in the extension of the slots 15, is greater than out of phase with the slots 15. Basically, however, also, variants of execution are conceivable, in which the incline of the pin 10 in the area of the expansion 12, in the extension of the slots 15, is less than out of phase with slots 15.
    [0047] In the same way as the neck area 11, also the expansion area 12 of the pin 10 has a non-circular shape in cross section (for example, Figure 5), preferably a wavy shape. As, however, the area of the expansion 12 is sequential to the area of the neck 11, and as the incline in the extension of the slots 15 is greater than in the corresponding offset, the pin 10, in a preferred transverse plane of the area of the expansion 12, shown in Figure 4, presents a circular cross section.
    [0048] In the unexpanded state of the expansion sleeve 20, present in the introduction of the pin 10 into the substrate 5, the localized increases in the wall thickness of the expansion sleeve 20, formed by the threads 25, are at least partially received in the grooves 15 in the pin 10, so that the increases in the wall thickness of the expansion sleeve 20, formed by the threads 25, do not protrude radially outwards or possibly only partially. In the expansion of the expansion sleeve 20, when the expansion sleeve 20 reaches the area of the expansion 12 by being radially enlarged, the threads 25 will be activated and protrude on the outside of the expansion sleeve 20, as can be recognized, for example, in Figure 4.
    [0049] As especially shown in Figures 7 and 11, in the area of the front front face 21 of the expansion sleeve 20, the threads 25 have a chamfer 26. In this chamfer, the wall thickness of the expansion sleeve 20 decreases, preferably continuously , towards the front 21 front side
    [0050] As can be recognized, especially in Figure 7, the expansion sleeve 20 has expansion slots 24 extending from the front front side 21 of the expansion sleeve 20. These expansion slots 23 and 24 facilitate the radial expansion of the expansion sleeve 20 through expansion area 12 of pin 10. Expansion sleeve 20 may be produced by winding a sheet plate.
    [0051] As shown in Figure 6, in at least one of the slots 15, preferably in the passage to the expansion area 12, the pin 10 can have an adhesive coating 19 that will be activated by the corresponding thread 25 of the expansion sleeve 20 at the time of the application of the anchor and that can fix the expansion sleeve 20 on the pin 10.
    权利要求:
    Claims (13)
    [0001]
    1. Expansion anchor (1) with a pin (10), which has a neck area (11) and an expansion area (12) sequential to the neck area (11), with the pin (10) narrowing towards the neck (11) area, whereas in the neck (11) area the pin (10) has a groove (15), which extends along the pin (10), and with an expansion sleeve (20), which at least partially surrounds the pin (10) and which, on its inner side, has a thread (25), and the thread (25), at least in certain areas, fits into the groove (15) in the area of the neck (11), and by the fillet (25) the wall thickness of the expansion sleeve (20) is locally increased, with the expansion sleeve (20) under radial expansion of the expansion sleeve (20 ) along the pin (10), it can be moved from the neck (11) area to the expansion (12) area, characterized in that in the displacement of the expansion sleeve (20) from the neck (11) area to the expansion area (12), the thread (25), by the less partially, it reaches the area of the expansion (12) and is forced radially outwards by the area of the expansion (12), whereby the groove (15) provided in the area of the neck (11) of the pin (10) extends to the area of the expansion (12) of the pin (10).
    [0002]
    2. Expansion anchor (1) according to claim 1, characterized in that the distance of the thread (25) from the front face (21) of the expansion sleeve (20), which is facing the expansion area ( 12), is less than 10 times, 5 times or 2 times the height of the fillet (25).
    [0003]
    3. Expansion anchor (1) according to claim 1 or 2, characterized in that the pin (10) presents in the neck (11) area a plurality of grooves (15), which extend along the pin (10), whereby the expansion sleeve (20) has on its inner side a plurality of threads (25), whereby the wall thickness of the expansion sleeve (20) is locally increased and which, at least in certain areas , fit in one of the grooves (15) in the neck (11) area, and several threads (25), in the displacement of the expansion sleeve (20) from the neck (11) area to the expansion area (12) , at least in certain areas, reach the expansion area (12) and are forced radially outward by the expansion area (12).
    [0004]
    4. Expansion anchor (1) according to any one of the preceding claims, characterized in that the pin (10) presents, in the area of expansion (12), at least in certain segments, a non-circular cross section.
    [0005]
    5. Expansion anchor (1) according to any one of the preceding claims, characterized in that the pin (10) presents in the expansion area (12), in the extension of the groove (15), at least in certain areas, a slope greater than the one out of phase with the slot (15), or the pin (10) having, in the area of the expansion (12), in the extension of the slot (15), at least in certain areas, a smaller slope of the which is out of phase with the groove (15).
    [0006]
    6. Expansion anchor (1) according to any one of the preceding claims, characterized in that the pin (10) presents in the neck (11) area and/or in the expansion area (12), at least in segments , a rotationally symmetric cross section.
    [0007]
    7. Expansion anchor (1) according to any one of the preceding claims, characterized in that in the expansion area (12), the lateral face of the pin (10) is sequential to the lateral face of the pin (10) in the area of the neck (11).
    [0008]
    8. Expansion anchor (1) according to any one of the preceding claims, characterized in that the thread (25) has a chamfer (26) at its end facing the expansion area (12).
    [0009]
    9. Expansion anchor (1) according to any one of the preceding claims, characterized in that the pin (10) has in a concavity, especially in the groove (15), an adhesive coating (19) that can be activated by the expansion sleeve (20), especially by the thread (25).
    [0010]
    10. Production method, characterized in that an expansion bolt (1) is produced as defined in any one of the preceding claims, whereby the pin (10) of the expansion bolt is formed from a first blank (1) and, from a second blank, the expansion sleeve (20) of the expansion bolt (1) is formed.
    [0011]
    11. Method according to claim 10, characterized in that the thread (25) is formed on the inner side of the expansion sleeve (20) in a rolling process, the rotation axis of at least one rolling mill profiles used in the lamination process preferably extend in parallel, at least under an angle of less than 45° with respect to the thread (25).
    [0012]
    12. Method according to claim 10 or 11, characterized in that on the first blank, after shaping the groove (15), a coating liquid is applied, and the first blank is then placed to rotate around its longitudinal axis, so that the coating liquid accumulates outside the groove (15) and hardens there with locally increased layer thickness.
    [0013]
    13. Assembly consisting of a substrate (5) with an orifice and an expansion anchor (1), as defined in any one of claims 1 to 9, which is arranged in the orifice, characterized in that the expansion area (12 ) of the pin (10) presses the expansion sleeve (20) in its thread (25) against the wall of the hole.
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    EP2848825A1|2015-03-18|
    US20170343026A1|2017-11-30|
    CA2923044A1|2015-03-19|
    MX2016003304A|2016-05-31|
    RU2016114695A|2017-10-23|
    ES2739706T3|2020-02-03|
    WO2015036283A1|2015-03-19|
    AU2014320558B2|2017-07-20|
    RU2675653C2|2018-12-21|
    AU2017245474B2|2019-06-27|
    HK1219526A1|2017-04-07|
    CN105556138B|2018-02-02|
    EP3047161B1|2019-07-03|
    US10781842B2|2020-09-22|
    JP2016536545A|2016-11-24|
    US20160238052A1|2016-08-18|
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    法律状态:
    2019-12-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-04-06| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-18| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 02/09/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP13184592.7A|EP2848825A1|2013-09-16|2013-09-16|Split anchor|
    EP13184592.7|2013-09-16|
    PCT/EP2014/068586|WO2015036283A1|2013-09-16|2014-09-02|Expansion anchor|
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