• 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:
    In a fastening device, at least one fastening element (13) is provided, which has a head portion (14) with a tool engaging structure (15) for attaching a screwing tool, wherein the head portion (14) is connected to a shaft (16) having a to Head portion (14) towards open, along a longitudinal axis (17) of the fastener (13) extending cavity (18) and an external thread (19), wherein the shaft (16) to form a plurality of auseinanderspreizbarer segments (20, 21) along is slotted and with a spreading element (22) which in the cavity (18) of the shaft (16) for spreading the segments (20, 21) is insertable.
    公开号:AT519920A2
    申请号:T50281/2018
    申请日:2018-04-06
    公开日:2018-11-15
    发明作者:Grabher Günter
    申请人:Grass Gmbh；
    IPC主号:
    专利说明:

    fastening device
    The invention relates to a fastening device with at least one fastening element that has a head section with a tool engagement structure for attaching a screwing tool.
    Such fastening devices in the form of screws have been known for centuries.
    Furthermore, expansion anchors are known from a prior art that is not available in printed form, with which two components can be connected to one another easily and effectively. Expansion dowels are made of elastic material and have expansion elements arranged on the outer circumference. When a fastening screw is screwed in, the dowel expands and is held in the connecting hole by means of a frictional connection via the expansion elements arranged on the outer circumference.
    Furthermore, so-called plasterboard anchors are known from a prior art which is also not available in printed form and which have a low compressive strength and are mostly used in thin plates. With their deep external thread, the dowels cut into the thin plasterboard, which can then be used to introduce smaller loads.
    The object of the invention is to provide a fastening device of the type mentioned at the outset, which has greater functionality than conventional fastening screws as well as conventional dowels, which opens up new fields of application.
    This object is achieved by a fastening device with the features of independent claim 1. Further developments of the inventions are presented in the subclaims.
    The fastening device according to the invention is equipped with at least one fastening element which has a head section with a tool engagement structure for attaching a screwing tool, the head section being connected to a shaft which has a cavity which is open towards the head section and extends along a longitudinal axis of the fastening element Has an external thread, the shaft being slit longitudinally to form a plurality of segments which can be spread apart, and with a spreading element which can be inserted into the cavity of the shaft in order to expand the segments.
    The fastening device thus combines the properties of a dowel with those of a fastening screw. The at least one fastening element of the fastening device / 14
    Like a dowel, 23051-AT can be quickly and easily inserted into a connection hole or fastening hole by inserting it into the fastening hole. It is not necessary to screw in as with a fastening screw. So that the fastening element holds in the associated fastening hole, the expansion element is used, which can be inserted into the cavity of the shaft of the fastening element and ensures that the segments of the shaft are expanded. An essential aspect of the fastening device according to the invention is that a mounted fastening element can be removed again in a simple manner, since the head section of the fastening element has a tool engagement structure and the fastening element can therefore be screwed out of the assigned fastening hole like a screw.
    In a further development of the invention, the expansion element remains in the position of use in the cavity of the shank after insertion, the expansion element being designed in such a way that in its position of use it enables the tool engagement structure to be accessible. The expansion element therefore essentially completely immerses into the cavity, as a result of which it does not hinder the attachment of a screwing tool to the tool engagement structure.
    The longitudinal extent of the expansion element is particularly preferably smaller than the length of the cavity of the shaft.
    In a development of the invention, the expansion element is designed as a cylindrical expansion pin in particular.
    In a particularly preferred manner, the tool engagement structure is designed as a tool engagement structure. For example, it is possible for the tool engagement structure to be non-circular. An inner polygonal or multi-round inner structure is particularly preferred. For example, a hexagon socket for screws is suitable as an internal multi-round structure. A cross-slot profile or an internal hexagon profile is suitable as an internal polygonal profile, for example.
    In a particularly preferred manner, the shaft is conical in the case of unexpanded segments and assumes a cylindrical shape after insertion of the expanding element. This ensures that the expanded shaft adapts to the cylindrical fastening hole and claws into the wall of the fastening hole.
    In a development of the invention, the fastening element consists of plastic or metal.
    / 14
    23051-AT
    In a further development of the invention, the fastening device has a mounting element on which at least one of the fastening elements is preassembled with unexpanded segments. The mounting element is expediently designed in the manner of a rail or strip. It is possible that several fastening elements are preassembled on the mounting element. The mounting element can be, for example, a hanging hook, which is used in particular for fastening a front to side parts, for example side frames, of a drawer.
    The invention further comprises a piece of furniture with at least one furniture component which is fastened to another furniture component or to a peripheral structure, for example a wall, by means of a fastening device, the fastening device being designed according to one of claims 1 to 10.
    It is possible for fastening holes to be formed in the furniture component and in the associated furniture component or peripheral structure, the inside diameter of which is designed such that the associated fastening element can be inserted without a screwing process and then dismantled after the segments have been spread apart by attaching a screwing tool to the tool. Intervention structure with screwing is possible.
    A preferred embodiment of the invention is shown in the drawing and is explained in more detail below.
    The drawings show:
    1 shows a perspective illustration of a preferred exemplary embodiment of the fastening device according to the invention, one of the fastening elements of the fastening device being shown here,
    Figure 2
    Figure 3
    Figure 4
    5 shows a longitudinal section through the fastening element from FIG. 1, a longitudinal section through the fastening device from FIG. 1, two fastening elements and one mounting element of the fastening device being shown during the pre-assembly, the fastening elements and the assembly element in the pre-assembled state, the pre-assembled assembly from FIG. 4 after insertion into assigned mounting holes of an assigned furniture component, / 14
    23051-AT
    Figure 6
    Figure 7
    Figure 8
    9 shows the assembly from FIG. 5 in the assembled, anchored state, the assembly from FIG. 6 after the removal of the fastening elements, a perspective view of a fastening element of the fastening device according to the invention after its removal and a longitudinal section through the fastening element from FIG. 8.
    FIGS. 1 to 9 show a preferred exemplary embodiment of the fastening device 11 according to the invention. The fastening device 11 is explained below by way of example using its use for fastening two furniture components to one another.
    In the example, the two furniture components to be attached to one another belong to a piece of furniture in the form of a drawer. In the example shown, one of the furniture components is the front 12 of the drawer, while the other furniture components are one of the two side parts, for example the side frame, of the drawer. The fastening device 11 has at least one fastening element 13. In the example shown, two fastening elements 13 are present, as shown in particular in FIGS. 3 to 7.
    As shown in particular in FIGS. 1 and 2, the fastening elements 13 each have a head section 14 with a tool engagement structure 15 for attaching a screwing tool (not shown), in particular a screwdriver. In the example shown, the head section 14 is designed as a screw head. In the example shown, the tool engagement structure is designed as a tool engagement structure in the form of an internal polygon, in particular a cross recess structure.
    As shown in particular in FIG. 2, the head section 14 of the fastening element 13 is connected to a shaft 16 which has a cavity 18 which is open towards the head section 14 and extends along a longitudinal axis 17 of the fastening element 13 and has an external thread 19. The head section 14 has a larger diameter than the shaft 16. The external thread 19 extends essentially over the entire length of the shaft 16. In the example shown, the external edges of the external thread 19 also do not protrude beyond the diameter of the head section 14.
    As shown in particular in FIG. 2, the shaft 16 is longitudinally slotted to form a plurality of segments 20, 21 that can be spread apart. In the example shown, the shaft consists of two segments 20, 21, which are each connected in one piece to the head section 14 via a solid body joint.
    / 14
    23051-AT
    As shown in particular in FIG. 2, the shaft 16 is conical in the case of unexpanded segments 20, 21. Correspondingly, the cavity 18 also has a conical shape.
    The fastening device 11 also has a spreading element 22 which can be inserted into the cavity of the shaft 16 for spreading out the segments 20, 21. In the example shown, the fastening element 13, in particular the head section 14 and the shaft 16, consist of plastic material, as a result of which the articulated coupling of the segments 20, 21 to the head section 14 can be implemented in a simple manner due to the elastic deformability of the plastic material. However, it is also conceivable to manufacture the fastening element 13 from metal material, the wall thickness of the segments 20, 21 then being dimensioned such that spreading apart is possible when the spreading element 22 is introduced.
    In the example, the expansion element 22 is designed as a cylindrical expansion pin. The
    Spreader element 22, in particular the cylindrical spreader pin, has a length that is less than the length of the cavity 18, so that it can, as will be described in more detail below, be completely immersed in the cavity 18 of the shaft 16.
    In the following, the function of the fastening device 11 is explained by way of example when it is used to connect a front 12 to an associated side part, for example a side frame, of a drawer.
    The fastening device 11 has in this example in addition to
    Fastening elements 13 a mounting element 23, which is in the form of a so-called
    Hook is shown. The hook is a flat piece made of metal or plastic material, which has a base section 25 which can be fastened to an inside 24 of the front 12 and a hook section 26 which jumps at an angle from the base section 25 in the direction away from the inside of the front 12. In addition to the hook section 26, which is located at the free end of the hanging hook, a further hook section 27 is formed on the base section 25, which also jumps away from the base section from the inside 24 of the front 12.
    There is a need to mount a hook on each of two end sections of the front 12, so that the front 12 with the two hooks and the associated hook sections 26, 27 can be hung into associated sections on the associated side part, in particular the side frame.
    As shown in particular in Figure 3, the base portion 25 of the hook has the respective fastening elements 13 associated mounting holes 28, the shape of which is adapted to the shape of the head portion 14 of the associated fastening elements 13.
    / 14
    23051-AT
    In the example shown, there are two fastening elements 13 for fastening the
    Hook provided on the inside 24 of the front 12.
    As shown in particular in FIG. 3, the fastening elements 13 with unspread segments 20, 21 and with expanding elements 22 protruding from the cavity 18 are brought up to the associated mounting holes 28 on the base section 25 of the hook. Next, the fastening elements 13 with their shafts 16 are passed through the associated mounting holes 28 of the base section 25, the head sections 14 of the fastening elements 13 not fitting through the mounting holes 28, but being fit into the mounting holes 28 with a precise fit. This results in a preassembled assembly 29 consisting of hooks and associated fastening elements 13.
    Next, the preassembled assembly 29 is brought in its entirety to the associated front 12, in which mounting holes 30 are already formed.
    An essential aspect of the invention is that the shafts 16 of the fastening elements 13 can be inserted into the associated fastening holes 30 in a simple manner despite the presence of external threads 19, since the segments 20, 21 are not spread out.
    As shown in particular in FIG. 6, the next step is to anchor the shafts 16 in the associated fastening holes 30. For this purpose, the respective expansion elements 22, that is to say in the example shown, the cylindrical expansion pins are pressed into the respective cavities 18 of the shafts 16, as a result of which the segments 20 , 21 of the respective shaft 16 pivot radially outwards, that is to say they are spread apart, as a result of which the external thread 19 claws into the material of the front 12, which is mainly wood. As a result, the fastening elements 13 are secured in the associated fastening holes 30.
    As shown in particular in FIG. 6, the expansion elements 22 remain in the cavity 18 and ensure that the shaft 16 assumes an approximately cylindrical shape when the segments 20, 21 are expanded. The spreading elements 22 are completely immersed in the cavity 18, so that the tool engagement structure 15 is exposed.
    As soon as both hooks are attached to the inside 24 of the front 12, the front 12 can, as mentioned, be hung on the associated side parts.
    A particular advantage of the fastening device 11 is the simple disassembly. If the hook is to be removed from the front 12, the fastening elements 13 can be screwed out of the fastening holes 30 in a simple manner by attaching a screwdriver to the tool engagement structure 15. The one that acts as a dowel during assembly / 14
    23051-AT
    Fastening elements 13 thus become fastening screws during disassembly. The disassembled fastening elements 13 can then be used in a simple manner as normal fastening screws.
    As shown in particular in FIGS. 8 and 9, the shaft 16 of the dismantled fastening elements 13 has an essentially circular cylindrical shape due to the expansion element 22 located in the cavity 18.
    权利要求:
    Claims (12)
    [1]
    1. Fastening device, with at least one fastening element (13), which has a head section (14) with a tool engagement structure (15) for attaching a screwing tool, the head section (14) being connected to a shaft (16), one of which Head section (14) open towards, extending along a longitudinal axis (17) of the fastener (13) cavity (18) and an external thread (19), the shaft (16) forming a plurality of spreadable segments (20, 21) along is slotted and with a spreading element (22) which can be inserted into the cavity (18) of the shaft (16) for spreading the segments (20, 21).
    [2]
    2. Fastening device according to claim 1, characterized in that the expansion element (22) remains after insertion in a position of use in the cavity of the shaft (16), the expansion element (22) being designed such that it is accessible to the tool in its position of use Attack structure (15) allows.
    [3]
    3. Fastening device according to claim 2, characterized in that the longitudinal extent of the expansion element (22) is smaller than a length of the cavity (18).
    [4]
    4. Fastening device according to claim 2 or 3, characterized in that the expansion element (22) is designed as a cylindrical expansion pin in particular.
    [5]
    5. Fastening device according to one of the preceding claims, characterized in that the tool engagement structure (15) is designed as a tool engagement structure.
    [6]
    6. Fastening device according to claim 5, characterized in that the tool engagement structure is non-circular, in particular as an inner polygonal or inner polygonal structure.
    [7]
    7. Fastening device according to one of the preceding claims, characterized in that the shaft is conical in the case of unexpanded segments (20, 21) and assumes a cylindrical shape after insertion of the expansion element (22).
    [8]
    8. Fastening device according to one of the preceding claims, characterized in that the fastening element (13) consists of plastic or metal.
    [9]
    9/14
    23051-AT
    9. Fastening device according to one of the preceding claims, characterized in that the expansion element (22) consists of plastic or metal.
    [10]
    10. Fastening device according to one of the preceding claims, characterized by a mounting element (23) on which at least one of the fastening elements (13) with unexpanded segments (20, 21) is preassembled.
    [11]
    11. Furniture, with at least one furniture component that by means of a
    Fastening device (11) on another furniture component or on one
    Peripheral structure, for example wall, is fastened, characterized in that the fastening device is designed according to one of claims 1 to 10.
    [12]
    12. Furniture according to claim 11, characterized in that fastening holes (30) are formed in the furniture component and in the associated furniture component or peripheral structure, the inside diameter of which is designed such that the associated fastening element (13) is inserted without a screwing operation and its subsequent disassembly the segments (20, 21) can be spread apart by attaching a screwing tool to the tool engagement structure with the screwing process.
    类似技术:
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    EP2894355A1|2015-07-15|Multi-part insulating material anchor with snap fastener
    DE202012104972U1|2013-01-23|anchor connector
    DE1966962C3|1978-04-27|Fitting for the releasable connection of two vertically abutting plate-shaped components, in particular furniture parts
    DE2149502B2|1981-02-05|Pressure cast zinc furniture hinge mounting plate - has lug ramps insertable in widened part of spreader cavity
    DE2625180B2|1979-08-09|Fitting for the detachable connection of two vertically abutting components
    EP0058709A1|1982-09-01|Anchoring bolt
    DE10343538B4|2006-02-02|Connecting element with spring-loaded safety device
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    同族专利:
    公开号 | 公开日
    AT519920B1|2020-01-15|
    AT519920A3|2019-10-15|
    DE202017002198U1|2018-07-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB486004A|1936-10-24|1938-05-24|Ernst Jordan|Improvements in wall plugs for nails or screws|
    US4488843A|1982-07-16|1984-12-18|Illinois Tool Works Inc.|Reusable one piece drive fastener|
    US5160225A|1991-08-23|1992-11-03|Chern T P|Structure of a self-drilling threaded insert for use on drywall|
    US5692864A|1995-12-21|1997-12-02|K & R Industries, Inc.|Self-threading anchor with spreadable leg portions joined by a frangible drill end portion|
    CN201650968U|2010-03-02|2010-11-24|鸿富锦精密工业（深圳）有限公司|Positioning component|EP3771837A1|2019-07-31|2021-02-03|SFS Intec Holding AG|Damping element|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE202017002198.6U|DE202017002198U1|2017-04-26|2017-04-26|fastening device|
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