Anchoring fitting for anchoring in a workpiece

Description

[0001] The invention relates to an anchoring fitting for anchoring in a workpiece, wherein the anchoring fitting has a tension rod for arrangement in a connecting recess of the workpiece and an abutment body for arrangement in an abutment recess of the workpiece communicating with the connecting recess, wherein the abutment body has a plug-in receptacle for inserting a plug-in section of the tension rod along a plug-in axis and a support surface arrangement for support on the abutment recess of the workpiece, wherein at least one support surface of the support surface arrangement extends, in particular approximately at right angles, transversely to a longitudinal axis of the tension rod inserted into the plug-in receptacle, so that the tension rod is supported on the abutment recess with respect to its longitudinal axis, wherein the anchoring fitting has a clamping body for clamping the plug-in section of the tension rod in the plug-in receptacle,and wherein at least one support body of the anchoring fitting has a flat shape with opposing flat sides and narrow sides extending between the flat sides, in particular rounded, for at least partially positive support in the connecting recess or the abutment recess of the workpiece, wherein the plug-in receptacle has, transversely to the plug-in axis, an alignment transverse width suitable for aligning the tension rod with respect to the abutment body, which is greater than the movement play necessary for inserting the tension rod into the plug-in receptacle.

[0002] Such an anchoring fitting is explained, for example, in DE 10 2015 100 199 A1. This anchoring fitting is a connecting fitting for connecting two workpieces, for example pieces of furniture. The tension rod has a rod-shaped configuration and thus extends along a longitudinal axis and can be inserted into the abutment body. The abutment body has a flat configuration and can be inserted into a corresponding abutment recess in a rotationally secure manner. The tension rod is typically housed in a support body having a flat configuration that essentially corresponds geometrically to the shape of the abutment body, thus providing a fixed, rotationally secure, and essentially immovable fitting configuration for reception in the two workpiece recesses, the connecting recess and the abutment recess.

[0003] However, very precise work is required to ensure that the anchoring fitting or connecting fitting actually fits into the workpiece recesses and that the counterpart, the other workpiece, can be connected accordingly. DE 10 2009 011 845 A1 discloses a connecting fitting with an anchoring body arrangement and a tension element, as well as a holding body, which engages with a first and second section on an inner circumference of a first receptacle and a second receptacle of workpieces to be connected.

[0004] DE 10 2006 024 265 B3 explains a fitting device for connecting two furniture parts with a clamping means which comprises a clamping bolt and a clamping element which is movably mounted in a fitting part of the fitting device for carrying out a clamping movement and which has a plug-in recess for inserting the clamping bolt.

[0005] DE 94 90 402 U1 describes a device with a female and a male part, which has an end section with an expansion area for receiving in the female part, wherein the expansion area contains several conical sections for expanding the female part.

[0006] Based on this, the object of the present invention is to provide an improved anchoring fitting.

[0007] To achieve the object, an anchoring fitting according to the technical teaching of claim 1 is provided, wherein the at least one support body has an abutment body receptacle for the abutment body, into which the abutment body engages in the mounted state of the anchoring fitting.

[0008] The play is essentially the distance between the plug-in receptacle and the plug-in section of the tie rod, which is required for the plug-in section to be inserted into the plug-in receptacle. The play is the clear width between the plug-in receptacle and the plug-in section of the tie rod, which is required to insert the plug-in section into the plug-in receptacle. Therefore, the transverse width of the plug-in receptacle must always be sufficient for the plug-in section of the tie rod to be inserted into the plug-in receptacle.

[0009] A fundamental concept of the present invention is that the tension rod can be inserted into the abutment body in a manner known per se, but has a certain amount of play there, which is greater than the play necessary for inserting the tension rod into the plug-in receptacle. The tension rod can be aligned in the plug-in receptacle, so that any workpiece recesses that are not precisely aligned, for example, bores for forming the connecting recess and / or the abutment recess, are not affected. However, the alignment of two workpieces, namely the workpiece that receives the anchoring fitting and a workpiece that is to be fastened to the first workpiece with the anchoring fitting, is not as important as is the case with the prior art.

[0010] The at least one support surface of the support surface arrangement extends transversely to a longitudinal axis of the tension rod inserted into the plug-in receptacle, e.g. at right angles or approximately at right angles, in particular at an angle of approximately 80°-100°, preferably 85°-95°.

[0011] The alignment transverse width is preferably at least 5%, preferably approximately 10%, or even more preferably approximately 20-30% more than the transverse width of the plug-in section of the tie rod. Thus, the clear width of the plug-in receptacle is sufficiently large that the tie rod, with its plug-in section, remains adjustable over a wide range transversely to its longitudinal axis.

[0012] The plug-in receptacle expediently has a transverse height that is angular, in particular perpendicular, to its alignment transverse width with respect to the longitudinal axis of the tension rod. The transverse height is expediently smaller in relation to the height of the plug-in section of the tension rod, which fills the transverse height or extends within the transverse height, than the alignment transverse width in relation to a transverse width of the plug-in section of the tension rod. The transverse height expediently has sufficient play to insert the tension rod into the plug-in receptacle. The play is expediently approximately 1 to 5% of a height of the plug-in section of the tension rod. The transverse height extends, for example, between a base surface and a support surface opposite the base surface or a pair of support surfaces of the plug-in receptacle opposite the base surface.

[0013] One or more components of the anchoring fitting are preferably made of metal, in particular the abutment body and the tension rod, as well as, preferably, the clamping body. However, it is also possible for one or more components of the anchoring fitting to be made of plastic, in particular a polyamide material or the like.

[0014] The clamping body is expediently adjustable relative to the abutment body along a clamping axis, with the alignment transverse width extending transversely to the clamping axis. The clamping axis and the longitudinal axis of the tension rod, when inserted into the plug-in receptacle, are preferably perpendicular or at least transverse to each other. Thus, the plug-in axis, the clamping axis, and the longitudinal extension of the transverse width or the transverse width expediently run at right angles to each other. However, an oblique arrangement would also be possible, i.e., for example, the clamping axis runs obliquely to the plug-in axis. Furthermore, it is conceivable for the clamping to be achieved not with just one clamping body, but with several clamping bodies.

[0015] The clamping body is conveniently positioned opposite the base surface of the plug-in receptacle. Thus, the clamping body is adjusted toward the base surface when it is to assume its clamping position, which clamps the tie rod in the plug-in receptacle.

[0016] The plug-in receptacle advantageously has a base surface designed to accommodate the plug-in section of the tie rod. This base surface forms the abutment or counterpressure surface for the clamping body.

[0017] The base surface and / or a support for the plug-in section of the tie rod for resting on the base surface are expediently flat or level surfaces. It is particularly advantageous if a support for the plug-in section of the tie rod and the base surface lie flat against each other and / or in a tilt-proof manner. However, it is also possible for the tie rod to have, for example, a concave support surface that can rest on a correspondingly convex base surface or even a flat or level base surface of the plug-in receptacle.

[0018] The clamping body expediently has a clamping bevel, for example a clamping cone, on its side facing the plug-in section of the tension rod, for example its front side.

[0019] The clamping body expediently comprises a clamping screw or is formed by a clamping screw. It is also possible for the clamping body not necessarily to be a clamping screw, but rather another body, which, however, has a screw portion for screwing into the abutment body. A screw bore or screw passage opening is expediently provided on the abutment body, which extends at an angle, in particular transversely or perpendicularly, to the plug-in axis of the plug-in receptacle.

[0020] It is also advantageous if the plug-in receptacle, to provide the alignment transverse width, is wider than the base surface in an area between the clamping body and the base surface. Thus, the plug-in receptacle has a comparatively narrow base surface, but one or more bulges above the base surface or in an area between the base surface and the clamping body.

[0021] The plug-in receptacle expediently extends diagonally outward from the base surface, for example, in a curved, straight line, or the like. Thus, the plug-in receptacle has side wall surfaces that extend diagonally outward from the base surface, in particular in a curved manner. It is possible for the plug-in receptacle to have such a curved or diagonally extending side wall surface on only one side, while the opposite side wall surface can, for example, be inclined inward toward the base surface or be perpendicular to the base surface.

[0022] The plug-in section of the tension rod expediently has a support surface for resting on a base surface of the plug-in receptacle, as well as at least one projection projecting in a plane parallel to the support surface, which projects in front of the support surface in the direction of the alignment transverse width. Consequently, the tension rod is narrower in the region of the support surface than in the region of the at least one projection. The at least one projection can, for example, be formed by an actuating contour for an assembly tool, for example an outer edge surface. At this point, it should be mentioned that the plug-in section as a whole can be designed as a polygon, for example a square, pentagon, hexagon, or octagon. In this case, one of the surfaces between the edges forms the support surface.

[0023] The support surface arrangement of the abutment body expediently comprises at least two support surfaces, which are provided on opposite sides and are intended for support transversely, for example approximately at right angles, to the longitudinal axis of the tie rod at the abutment recess. Thus, the support surfaces extend transversely to the longitudinal axis of the tie rod. The support surfaces can be straight or flat. Preferably, the support surfaces have a curvature.

[0024] The support surface arrangement of the abutment body expediently comprises at least one support rib and / or a rib structure for engaging the workpiece in the region of the abutment recess. The support ribs or the at least one support rib can, for example, penetrate into the workpiece, in particular a wooden workpiece, and provide a type of anti-twist protection there.

[0025] According to the invention, the at least one support body has an abutment body receptacle for the abutment body, into which the abutment body engages when the anchoring fitting is mounted. It should also be added that the flat sides transverse to the longitudinal axis of the support body are wider than the narrow sides, for example, twice as wide or three times as wide.

[0026] The abutment body mount can, for example, be a through-hole through which the abutment body can be inserted. It is also possible for the abutment body mount to be a type of blind hole into which the abutment body can be inserted.

[0027] A preferred embodiment is one in which the abutment body receptacles are provided between fork-shaped, protruding arms of the support body. The narrow sides are expediently provided on the arms of the support body. In particular, the arms of the support body are rounded on the outside, i.e., facing away from the abutment body receptacle.

[0028] A linear guide, such as a guide groove or a guide projection for inserting the abutment body into the abutment body receptacle, is expediently provided on at least one arm, but also on both arms, of the support body. The abutment body itself has guide contours matching the linear guide, such as a guide projection for engaging in a guide groove or a guide receptacle for engaging or receiving a guide projection of the arm. For example, the support body can be inserted transversely to a plug-in axis of the abutment body already arranged in the abutment recess, with which the abutment body can be inserted into the abutment recess of the workpiece.

[0029] Anti-rotation contours, such as polygonal anti-rotation contours, are advantageously provided on the abutment body mount and / or the abutment body to securely hold the abutment body in the abutment body mount. This prevents the abutment body from rotating when it is located in the abutment body mount of the support body. This facilitates, for example, the operation of the clamping body.

[0030] The abutment body receptacle is advantageously arranged on at least one flat side or extends between the flat sides of the support body. Thus, the abutment body can, for example, be inserted into the support body from one flat side or pushed through it.

[0031] At this point, it should be noted that the abutment body advantageously protrudes from the support body on at least one side, in particular a flat side of the support body. Furthermore, it is expedient for the abutment body to protrude from the support body on opposite sides, in particular flat sides of the support body.

[0032] Furthermore, it is advantageous if the support body has a passage opening for the tension rod. The passage opening expediently has a transverse width, at least in the area of ​​the abutment body, that allows the tension rod to be aligned in the plug-in receptacle. The transverse width can be slightly smaller than the alignment transverse width. However, it is advantageous if the transverse width of the passage opening for the tension rod is larger than the alignment transverse width of the plug-in receptacle of the abutment body.

[0033] The at least one support body is expediently intended or configured for placement in the connecting recess. The support body expediently has a flat end face. The flat end face can, for example, be aligned with an outer contour of the workpiece when the support body is inserted into the connecting recess and the anchoring fitting is fully assembled.

[0034] The tie rod expediently has at least one rotary drive contour, for example, a hexagonal contour or other polygonal contour, for an assembly tool. The rotary drive contour is suitable, for example, for an Allen key. For example, the rotary drive contour can be an inner contour. Preferably, the rotary drive contour comprises an outer peripheral contour of the tie rod. The assembly tool, for example, an Allen key, an assembly socket, an assembly wrench, or the like, can be brought into engagement with the rotary drive contour.

[0035] As stated, it is preferred that the or a rotational driving contour is arranged on an outer circumference of the tension rod. It is further preferred if the rotational driving contour is arranged in the region of the plug-in section. For example, a hexagon socket or another rotational driving contour is provided on an end face of the longitudinal end at which the plug-in section is arranged or provided. The rotational driving contour can also form the plug-in section entirely, or the plug-in section can be designed entirely as a rotational driving contour on its outer circumference, apart from the setting bevels or clamping bevels or adjustment bevels explained below. The rotational driving contour can, for example, be provided to ensure that the plug-in section fits at least partially against rotation in the plug-in receptacle of the abutment body.

[0036] An advantageous embodiment provides that the at least one rotary driving contour is provided on a head or an end face, in particular on the end face of a head, of the tie rod.

[0037] An actuating recess for the at least one rotary drive contour is advantageously provided on the plug-in receptacle of the abutment body for the tie rod. The tie rod can be actuated through the actuating recess, preferably at its front end and / or from its front end, for example, in the area of ​​the rotary drive contour when it is accommodated in the plug-in receptacle.

[0038] The abutment body's plug-in receptacle for the tie rod is advantageously designed as a through-hole. This through-hole allows, for example, the actuation of the rotary drive contour described above.

[0039] The tension anchor advantageously has a screw section, for example, for screwing into an anchoring body. The screw section and the plug-in section, which is to be inserted into the plug-in receptacle of the abutment body, are provided at opposite longitudinal end regions of the tension anchor. Thus, one longitudinal end of the tension anchor is provided for insertion into the abutment body, and the other longitudinal end is provided for connection to another body, for example, an anchoring body of the anchoring fitting. The screw section can also be provided for screwing into another workpiece. The screw section can, for example, have a self-tapping thread that can be screwed directly into a workpiece, in particular a wooden workpiece.Preferably, an inclined surface arrangement is provided between the tension rod and the clamping body for longitudinal adjustment of the tension rod relative to the abutment body in the direction of the longitudinal axis of the tension rod. The inclined surface arrangement can, for example, comprise or be formed by the aforementioned clamping slope, in particular the clamping cone, on the clamping body.

[0040] The inclined surface arrangement expediently comprises at least one adjusting bevel running obliquely to the longitudinal axis of the tie rod, which is provided in particular on the tie rod itself, but can also be provided on the clamping body. It should be noted at this point that the corresponding adjusting bevels or inclined surfaces can be provided on both the tie rod and the clamping body. The at least one adjusting bevel can comprise several, for example, two or three, adjusting bevels running at an angle to one another in the form of a recess or a projection.

[0041] At this point it should be mentioned that an adjusting bevel arranged on the tie rod can be longer than an adjusting bevel arranged on the clamping body.

[0042] The inclined surface arrangement expediently extends transversely to the longitudinal axis of the tension rod with a transverse width that allows alignment of the tension rod with respect to the abutment body within the range of the alignment transverse width of the plug-in receptacle. Thus, the adjustment slope is not narrow along the longitudinal axis of the tension rod, but rather relatively wide. The tension rod can thus be aligned within the plug-in receptacle, while the engagement of the clamping body in the adjustment slope of the tension rod is always maintained.

[0043] Preferred at this point is an arrangement in which an inclined surface on the tie rod is inclined only at an angle to the longitudinal axis of the tie rod, but not transversely to the longitudinal axis of the tie rod. However, it is also possible for the adjusting bevel or inclined surface arrangement to have at least one type of recess with two-dimensionally extending inclined surfaces, for example, a conical bore. Such a bore is easy to produce. Nevertheless, with a correspondingly flat inclination transversely to the longitudinal axis of the tie rod, it allows the tie rod to remain alignable within the plug-in receptacle in the region of the alignment transverse width.

[0044] A preferred concept provides that the tension rod can be positively fixed in the plug-in receptacle by the clamping body in the direction of the longitudinal axis of the tension rod or the plug-in axis of the plug-in section. Furthermore, it is advantageous if the tension rod can be non-positively fixed in the plug-in receptacle by the clamping body transversely to the longitudinal axis of the tension rod or transversely to the plug-in axis of the plug-in section. The tension rod can be additionally supported, for example, transversely to its longitudinal axis by frictionally engaging the connecting recess.

[0045] The abutment body is expediently provided for anchoring the anchoring fitting in a first workpiece. The anchoring fitting additionally comprises at least one holding body, for example the aforementioned anchoring body, into which the tension rod can be screwed, for fastening in a holding recess of a second workpiece. The holding body is connected to the tension rod, for example, permanently connected. However, the holding body can also be detachably connected to the tension rod using fastening means. The fastening means comprise, for example, screw means and / or are formed by a screw connection. It is also possible for the holding body to have a passage opening for at least a partial section of the tension rod. Thus, the tension rod, for example with a screw section, can be pushed through the passage opening and connected to another component, for example, another tension rod.

[0046] The holding body expediently has a flat shape with opposing flat sides and narrow, for example rounded, sides extending between the flat sides for at least partially positive support in the holding recess. The holding body expediently has an envelope of an outer contour that corresponds to the envelope of the outer contour of the at least one support body of the basic anchoring fitting explained above. It should be mentioned at this point that the anchoring fitting expediently has components that can be inserted into circular workpiece recesses and otherwise, apart from the tension rod, has bodies that have the aforementioned flat shape.The outer peripheral geometries of the bodies having flat sides are expediently identical, so that all flat-shaped recesses in the workpiece can be produced with a single drilling tool or a single setting of a drilling tool / milling tool.

[0047] However, the holding body can also be made up of multiple parts, for example, two parts. A preferred arrangement is one in which the holding body can be inserted into a holding recess on a workpiece from two opposite sides. A respective tie rod can be held, in particular releasably, on the respective holding body or holding body part.

[0048] The holding body advantageously comprises a clamping element for clamping in the holding recess of the second workpiece or forms such a clamping element. Thus, the holding body can be securely fastened in the holding recess.

[0049] The holding body expediently has at least one clamping arm for clamping in the holding recess of the second workpiece. Particularly preferred are two clamping arms or a pair of clamping arms, which are arranged on an opposite side and are to be clamped in the holding recess in a spread-foot manner. The at least one clamping arm or the pair of clamping arms can expediently be adjusted by the tie rod itself or a wedge body actuated by the tie rod into a clamping position that clamps the holding body in the holding recess. The tie rod can expediently be pushed through a through-opening of the holding body and connected to the clamping body, for example by screwing.When the tie rod is screwed on, for example using the rotary driving contours already mentioned, it adjusts the wedge body between a base body of the holding body and the clamping arm or the two clamping arms in such a way that at least one clamping arm or the clamping arms are spread apart from the base body of the holding body in order to clamp the holding body in the holding recess.

[0050] It is further advantageous if the tension rod forms a first tension rod and the abutment body forms a first abutment body, and the anchoring fitting in this configuration has a second tension rod and a second abutment body for arrangement in a second workpiece. The first tension rod and the second tension rod can be releasably connected to one another at their longitudinal end regions remote from the respective abutment bodies, for example, by screwing, clamping, or connecting in some other way. Thus, such an anchoring fitting can be used to connect two workpieces to one another.

[0051] A preferred concept provides for a maximum outer circumference and / or an envelope of the abutment body around its insertion axis intended for insertion into the abutment recess to be approximately circular. The abutment body does not have to be completely circular, but only circular in its envelope. This allows the abutment body to be inserted into the abutment recess if the recess has a circular inner contour. Therefore, the abutment recess is preferably a bore, while the connecting recess expediently has a flat shape, i.e., a smaller height than width.

[0052] Exemplary embodiments of the invention are explained below with reference to the drawings. They show: Figure 1 shows an exploded view of an anchoring fitting, which is shown in Figure 2 in the assembled state, Figure 3 shows the anchoring fitting according to Figures 1, 2in the assembled state, in which it connects two workpieces together and in which a breakout is shown in one workpiece, Figure 4 the arrangement according to Figure 3 , approximately along a section line AA, Figure 5 the arrangement according to Figure 3 , approximately along a section line BB, Figure 6 an exploded view of the connecting fitting according to Figures 1 and 2 with an alternative tie rod, Figure 7 an exploded view of another connecting fitting with two tie rods, an intermediate holding body and two abutment bodies, and Figure 8 the arrangement according to Figure 7 , but without holding body.

[0053] One in the Figures 1 and 2The anchoring fitting 10 shown can be anchored in a workpiece W2 and serves to connect the workpiece W2 to a workpiece W1. The workpieces W1 and W2 are, for example, wooden workpieces, wooden panels, or the like. Of course, the anchoring fitting is also suitable for workpieces made of other materials, such as plastic or metal. When connected to each other, the workpieces W1 and W2 rest against each other, for example, with their workpiece end faces WS1 and WS2.

[0054] A holding recess HA and a connecting recess VA are arranged in the workpiece W1 and are aligned with each other when the anchoring fitting 10 is mounted or when the workpieces W1 and W2 are mounted to each other, see for example Figures 3 and 4. A counterbore recess WA is provided in the workpiece W2, transverse to the two recesses VA and HA, for example, at right angles. The counterbore recess WA extends from a flat side WF2 of the workpiece W2 into its core area and communicates with the connecting recess VA, which runs at right angles or at least transversely to the counterbore recess WA.

[0055] To anchor the anchoring fitting 10 in the workpiece W2, an abutment body 20 is provided, which is designed, for example, in the manner of a retaining nut or the like. The abutment body 20 has a flat shape on opposite end faces 21 and 24, while front and rear front sides 23 extending between the end faces 21, 24 comprise a rounded portion. Extending between the front sides 23 are longitudinal sides 22, which have a substantially flattened shape, i.e., they recede from a round or circular envelope of the abutment body 20 when viewed from one of the end faces 21 or 24 onto the abutment body 20. However, guide projections 27, which have a rounded outer peripheral contour, are provided on the longitudinal sides 22.In the plane of the guide projections 27, the abutment body 20 has an approximately circular outer circumferential contour apart from support ribs 23A, which serve to support the inner circumference of the abutment recess WA.

[0056] Due to its approximately circular outer circumferential contour with respect to a plug-in axis SW, along which it can be inserted into the abutment recess WA, the abutment body 20 can be inserted into the likewise circular abutment recess WA. An envelope of the abutment body 20 with respect to the plug-in axis SW is approximately circular.

[0057] A configuration in which the abutment body 20 is supported directly and / or exclusively on the abutment holder WA would now be conceivable, but this is not the case here.

[0058] Rather, the abutment body 20 is at least additionally supported by a support body 30, which is provided and designed to engage or insert into the connecting recess VA. In particular, the support body 30 has a flat shape with narrow sides 32 and flat sides 34 extending between the narrow sides 32.

[0059] The support body 30 has a base body 31 from which arms 40 protrude. In the area of ​​the arms 40, the flat side 34 is recessed or interrupted, so to speak, because an abutment body receptacle 41 for the abutment body 20 is located there.

[0060] The narrow sides 32 of the support body 30 are rounded on the outside, i.e., they are convex with respect to the flat sides 34. Such a rounding can, for example, be continuous, as in particular in the area of ​​insertion bevels 42 on the arms 40. However, it is also possible for the roundings to be discontinuous, so that, for example, recesses 38 are provided in the area of ​​the narrow sides 32 on the base body 31. However, the outer peripheral contour of the narrow sides 32 is also essentially round in the area of ​​the base body 31.

[0061] The end faces or front faces 33 of the arms 40 extend to the abutment recess WA, where the abutment body 20 is located when the anchoring fitting 10 is assembled. The support body 30 can be inserted into the connecting recess VA if the abutment body 20 is already arranged in the abutment recess WA. To facilitate the insertion movement, the guide projections 27 of the abutment body 20 engage in a linear guide 39 of the support body 30. The linear guide 39 is formed, for example, by guide grooves or guide recesses on the arms 40, into which the guide projections or guide contours 27 of the abutment body 20 can engage.

[0062] Support ribs 37, which project in front of the narrow sides 32 in a plane approximately parallel to the flat sides 34 and can dig into the material of the workpiece W2, ensure improved hold of the support body 30 in the connecting recess VA.

[0063] The arms 40 have insertion bevels 42 on their sides facing away from the abutment body receptacle 41, i.e., the arms 40 are slimmer and / or tapered toward their free end regions or end faces 33. An outer peripheral contour of the support body 30 is smaller in the region of the arms 40 than in the region of the base body 31. Thus, the support body 30 can be more easily inserted into the connecting recess VA because it is narrower in the region of the end faces 33 than in the region of the end face 34.

[0064] An end face 35 of the support body 30 facing away from the abutment body 20 or the abutment body receptacle 41 is expediently aligned with the workpiece end face WS2 when the support body 30 is mounted on the workpiece W2 or recedes behind the workpiece end face WS2, i.e. is recessed in the connecting recess VA.

[0065] If the abutment body 20 is arranged in the abutment recess WA and the support body 30 is arranged in the connecting recess VA, the tension rod 50 can be inserted through the passage opening 36 of the support body 30 up to a plug-in receptacle 26 of the abutment body 20 along a plug-in axis S and clamped in the plug-in receptacle 26 by means of a clamping body 60.

[0066] The clamping body 60 is received in a clamping body receptacle 25 of the abutment body 20. A rotary drive contour 62, for example for an Allen key, is provided on an end face 61 of the clamping body 60. The rotary drive contour 62 enables the clamping body 60 to be rotated, so that it can be screwed into or unscrewed from the clamping body receptacle 25. On an outer circumference 63 of the clamping body 60, which is essentially designed as a screw or clamping screw, there are screw contours or screw threads that engage with screw contours on the inner circumference of the clamping body receptacle 25. On an end face of the clamping body 60 opposite the end face 61, namely on an end face protruding into the plug-in receptacle 26, a clamping bevel 64, in particular a cone, is provided, with which the tension rod 50 can be clamped in the plug-in receptacle 26.

[0067] The tie rod 50 has a tie rod body 51. The tie rod 50 extends along a longitudinal axis L or has a longitudinal axis L. At one longitudinal end of the tie rod 50, a plug-in section 52 is provided for insertion into the plug-in receptacle 26 of the abutment body 20. A screw section 58 is provided at the other longitudinal end. A step 59 is provided between the screw section 58 and the plug-in section 52.

[0068] On the tie rod 50, rotary drive contours 54, 55 are provided, with which the tie rod 50 can be rotated about a rotation axis and / or its longitudinal axis L. The rotary drive contour 54 is provided on an outer circumference of the tie rod 50, in particular in the plug-in section 52.

[0069] The rotary driving contour 55 is, so to speak, an inner contour, which is provided at the longitudinal end of the plug-in section 52.

[0070] Between the longitudinal ends 56, 57 of the tie rod 50, but at the plug-in section 52, an inclined surface arrangement 53 for the clamping body 60 is provided. The inclined surface arrangement 53 comprises adjusting bevels 53A, 53B, which extend toward each other in the manner of a trough or a V-shaped configuration. A depression or lowest point, so to speak, is provided between the adjusting bevels 53.

[0071] Thus, when the clamping body 60 is screwed along the clamping axis K so that it engages with the tension rod 50 and assumes a clamping position, the clamping bevel 64 slides along one of the adjusting bevels 53 so that the tension rod 50 is axially adjusted along its longitudinal axis L or the insertion axis S, namely towards the abutment body 20. This clamping movement serves to clamp the workpiece W2 to the workpiece W1, as will become clearer below: The tension rod 50 is detachably connectable to the holding body 70. The holding body 70 is intended for insertion into the holding receptacle HA of the workpiece W1. The holding body 70 has a base body 71 from which clamping arms 73 protrude in a fork-like manner. Between the clamping arms 73, an actuating recess 79 is provided, into which a wedge body 80 engages. The tension rod 50 can be connected to the wedge body 80, namely screwed.The screw section 58 can be screwed, for example, into a screw receptacle 83 on an end face 81 of the wedge body 80. Actuating bevels 82 are located laterally next to the screw receptacle 83, which can slide along the beveled surfaces 78 or inner sides of the actuating recess 79, so that they spread the clamping arms 73 outward, causing them to come into clamping engagement with the narrow sides or narrow inner sides of the holding recess HA.

[0072] Ribs 77, in particular elastic ribs, are advantageously provided on the clamping arms, which improve this positive clamping system of the clamping arms 73.

[0073] The holding body 70 is fundamentally flat, so that, like the support body 30, it has opposing narrow sides 72, which are located in particular on the outer sides of the clamping arms 73. Flat sides 74 extend between the narrow sides 72, in particular in the region of the base body 71. The holding body 30 further has a through-opening 76, which extends from an end face 75 facing the tie rod 50 or the support body 30, which is designed as a flat side in the present case, to the actuating recess 79 between the clamping arms 73. The screw section 58 can thus be pushed through the through-opening 76 and screwed into the wedge body 80. This then causes the clamping arms 73 to spread open.

[0074] In this context, the function of the rotary drive contours 54 and / or 55 also becomes clear. The operator can actuate the rotary drive contours 54, 55 with an assembly tool, for example, an Allen key, an open-end wrench, a ring spanner, or the like, to screw the tie rod 50 into the wedge body 80, so to speak, and thus clamp the holding body 70 in the holding recess HA.

[0075] It can be seen that this may result in the longitudinal axis L of the tension rod 50 not being optimally aligned with a central axis (relative to the plug-in axis S) of the plug-in receptacle 26 of the abutment body 20. However, this is not problematic insofar as the plug-in receptacle 26 not only has a transverse width that allows insertion of the plug-in section 52 of the tension rod 50, but also a transverse correction.

[0076] The plug-in receptacle 26 has an alignment transverse width Q, which is greater than the movement play which is necessary in order to insert the plug-in section 52 into the plug-in receptacle 26. This is particularly evident in the illustration according to Figure 5 Within the plug-in receptacle 26, the plug-in projection 52 of the tie rod 50 can be positioned not only in a central position PM, but also in lateral positions P1 or P2 deflected relative to the central position PM, as well as advantageously in numerous positions in between.

[0077] The plug-in section 52 finds optimal support in the plug-in receptacle 26 opposite the clamping body 60. The plug-in section 52 rests on a bottom surface 28 of the plug-in receptacle 26 with a flat support surface 52A, which is provided, for example, by one of the outer sides of the hexagon of the polygonal rotary drive contour 54. The bottom surface 28 lies opposite the clamping body 60 and thus optimally supports the tension rod 50 against the clamping body 60. It can also be seen that the rotary drive contour 54 is, in principle, an obstacle to a transverse adjustment or adjustment of the tension rod 50 within the alignment transverse width Q, because outer edges of the rotary drive contour 54 protrude laterally in front of the support surface 52A (see Figure 5). To remedy this problem, the plug-in receptacle 26 widens outwards from the base surface 28, so that the alignment transverse width Q is also given in the area of ​​the projections 52B present on the support surface 52A, namely the edges of the rotary driving contour 54.

[0078] The plug-in receptacle 26 further has a transverse height H transverse to the alignment transverse width Q. The transverse height H is smaller than the alignment transverse width Q. Therefore, the plug-in receptacle 26 has a flat shape. The transverse height H is the clear width of the plug-in receptacle 26 between the base surface 28 and at least one support surface 28A opposite the base surface 28. The at least one support surface 28A is expediently a flat surface. The at least one support surface 28A expediently runs parallel to the base surface 28. Essentially, there are two support surfaces 28A, between which the clamping body 60 is arranged.

[0079] A cover 90 is provided to provide a visually appealing cover for the anchoring fitting 10, in particular the abutment body 20. The cover 90 comprises, for example, a plate body 91, which is essentially aligned with the flat side WF2 of the workpiece when the cover 90 is attached to the anchoring fitting 10. The plate body 91 has retaining projections 92 that can be brought into engagement with the abutment body 20, for example in the region of receptacles 22A. The receptacles 22A are, for example, recesses or other depressions provided on the long sides 22 or in the region between the long sides 22 and the end face 21. Of course, other anchorings are also conceivable, for example a variant not shown in the illustration with a retaining projection that can engage with the rotational driving contour 62 of the clamping body 60, for example in the manner of a plug-in projection.

[0080] Variants of the anchoring fitting 10 are readily possible and, for example, in Figure 6 indicated. The tension rod 50 shown there, for example, has a self-tapping thread 158, with which it can be screwed directly into a workpiece, for example, a wooden workpiece.

[0081] A connecting fitting 110 according to Figures 7 and 8 can be mounted in different ways. Identical or similar components are provided with the same reference numerals and are not explained in detail. The anchoring fitting 110, for example, has abutment bodies 20A, 20B corresponding to the abutment body 20, which are to be arranged in unspecified abutment recesses of workpieces W4 and W5. The workpieces W4 and W5 also have connecting recesses into which a support body 30 is to be inserted, which is to be brought into engagement with the respective abutment body 20A, 20B.

[0082] Tension rods 50A, 50B can be clamped to the abutment bodies 20A, 20B, which are essentially similar to the tension rod 50. However, screw means for screwing the tension rods 50A, 50B together are provided on the tension rods 50A, 50B in the area of ​​the longitudinal ends 57. The screw means include, for example, the aforementioned screw section 58, which is suitable for screwing into a screw receptacle 158 of the other tension rod 50B. This screwing can be done directly, as in Figure 8 indicated.

[0083] However, it is also possible to sandwich another workpiece W3 between workpieces W4 and W5, for example, a side panel of a piece of furniture. In this case, workpieces W4 and W5 could be shelves, top panels, or bottom panels of a cabinet.

[0084] A holding recess similar to the holding recess HA is provided in the workpiece W3, into which a holding body 170 can be inserted. The holding body 170 has a partial holding body 171 and another partial holding body 172, which can be inserted into one another. The partial holding bodies 171, 172 are inserted into the holding recess of the workpiece W3 from opposite sides. A holding projection 175 of the partial holding body 171 can be inserted into a plug-in receptacle 176 of the other partial holding body 172.

[0085] On the end faces assigned to the outer sides of the workpiece W3, the partial holding bodies 171, 172 have, for example, projections 174 in order to limit the insertion movement into the holding receptacle of the workpiece W3.

[0086] The tie rods 50A, 50B can be pre-assembled on the partial holding bodies 171, 172. For example, in the area of ​​the step 59 of a respective tie rod 50A, 50B, locking contours 153, for example a locking projection, a locking receptacle, or the like, are provided, which can be brought into locking engagement with counter-locking contours 173 on the partial holding bodies 171, 172.

[0087] The holding body 170 has a through-opening 176 through which the tie rods 50A, 50B, namely in particular their screw sections 158, 58, can be inserted. A partial area of ​​the through-opening 176 is provided on each of the partial holding bodies 171, 172.

Claims

1. An anchoring fitting for anchoring in a workpiece (W2), wherein the anchoring fitting (10) comprises a tie rod (50) to be arranged in a connecting recess (VA) of the workpiece (W2) and a buttress body (20) to be arranged in a buttress recess (WA) of the workpiece (W2) communicating with the connecting recess (VA), wherein the buttress body (20) comprises an insertion receptacle (26) for the insertion of an insertion section (52) of the tie rod (50) along an insertion axis (S) and a support surface arrangement for support on the buttress recess (WA) of the workpiece (W2), wherein at least one support surface of the support surface arrangement extends, in particular approximately perpendicularly, transversely to a longitudinal axis (L) of the tie rod (50) inserted into the insertion receptacle (26), so that the tie rod (50) is supported with respect to its longitudinal axis (L) on the buttress recess (WA), wherein the anchoring fitting (10) comprises a clamping body (60) for clamping the insertion section (52) of the tie rod (50) in the insertion receptacle (26), and wherein at least one support body (30) of the anchoring fitting (10) has a flat shape having opposing flat sides and narrow sides, which are rounded in particular, extending between the flat sides for formfitting support at least in sections in the connecting recess (VA) or the buttress recess (WA) of the workpiece (W2), wherein the insertion receptacle (26), transversely to the insertion axis (S), has an alignment transverse width (Q), which is suitable for aligning the tie rod (50) with respect to the buttress body (20), and which is greater than a movement play (BS) necessary for the insertion of the tie rod (50) into the insertion receptacle (26), characterized in that the at least one support body (30) comprises a buttress body receptacle (41) for the buttress body (20), in which the buttress body (20) engages in the assembled state of the anchoring fitting.

2. The anchoring fitting (10) as claimed in claim 1, characterized in that the clamping body (60) is adjustable with respect to the buttress body (20) along a clamping axis (K), which is in particular perpendicular to the insertion axis (S), wherein the alignment transverse width (Q) extends transversely to the clamping axis (K), and / or in that the alignment transverse width (Q) is at least 5%, preferably approximately 10%, more preferably approximately 20% or 30% greater than a transverse width of the insertion section (52) of the tie rod (50).

3. The anchoring fitting as claimed in any one of the preceding claims, characterized in that the insertion receptacle (26) has a transverse height (H), which is angled, in particular perpendicularly, to each of the alignment transverse width (Q) and the insertion axis (S), and the dimension of which is sufficient to insert the tie rod (50) into the insertion receptacle (26), wherein the transverse height (H) is less in relation to a height of the insertion section (52) than the alignment transverse width (Q) is in relation to a width of the insertion section (52), and / or in that the clamping body (60) comprises at least one clamping inclination (64), in particular a clamping cone, on its side, in particular end side, facing toward the insertion section (52) of the tie rod (50) and / or in that the clamping body (60) comprises a clamping screw or is formed by a clamping screw and / or comprises a screw section (58) to be screwed into the buttress body (20).

4. The anchoring fitting as claimed in any one of the preceding claims, characterized in that the clamping body (60) is opposite to a base surface (28) of the insertion receptacle (26), and / or in that the insertion receptacle (26) comprises a base surface (28) provided for the contact of the insertion section (52) of the tie rod (50).

5. The anchoring fitting as claimed in claim 4, characterized in that the base surface (28) and / or a contact surface (52A) of the insertion section (52) of the tie rod (50) for contact on the base surface (28) is a planar surface or flat surface and / or in that the insertion receptacle (26) is wider than the base surface (28) in a region between the clamping body (60) and the base surface (28) to provide an alignment transverse width (Q), and / or in that the insertion receptacle (26) comprises a support surface, which is opposite to the base surface (28) and is formed in particular as a planar surface and / or in that the insertion receptacle (26) comprises side wall surfaces (29), which are in particular curved, extending diagonally outward from the base surface (28).

6. The anchoring fitting as claimed in any one of the preceding claims, characterized in that the insertion section (52) of the tie rod (50) comprises a contact surface (52A) for contact on a base surface (28) of the insertion receptacle (26) and comprises at least one projection (52B) protruding in a plane parallel to the contact surface (52A), which projection protrudes in front of the contact surface (52A) in the direction of the alignment transverse width (Q), and / or in that the support surface arrangement of the buttress body (20) comprises at least two support surfaces, which are provided on opposing sides and are provided for the support transversely, in particular approximately perpendicularly transversely, to the longitudinal axis (L) of the tie rod (50) on the buttress recess (WA) and / or in that the support surface arrangement of the buttress body (20) comprises at least one support rib (23A) and / or a rib structure to engage in a workpiece (W2) in the region of the buttress recess (WA).

7. The anchoring fitting as claimed in any one of the preceding claims, characterized in that twist-lock contours for the twist-locked accommodation of the buttress body (20) in the buttress body receptacle (41) are provided on the buttress body receptacle (41) and / or the buttress body (20).

8. The anchoring fitting as claimed in any one of the preceding claims, characterized in that the buttress body receptacle (41) is arranged on at least one flat side (34) or extends between the flat sides (34) of the support body (30), and / or in that the buttress body (20) protrudes from the support body (30) on at least one side, preferably on opposing sides, in the state assembled on the support body (30), and / or in that the buttress body receptacle (41) is provided between forked protruding arms (40) of the support body (30), wherein it is advantageously provided that a linear guide (39), in particular a guide groove or a guide projection, for inserting the buttress body (20) into the buttress body receptacle (41) is provided on at least one arm (40), advantageously on both arms (40) of the support body (30), wherein the buttress body (20) comprises guide contours (27) matching with the linear guide (39).

9. The anchoring fitting as claimed in any one of the preceding claims, characterized in that the support body (30) comprises a passage opening for the tie rod (50), wherein the passage opening has a transverse width enabling an alignment of the tie rod (50) in the insertion receptacle (26) at least in the region of the buttress body (20), which width is preferably equal to or greater than the alignment transverse width (Q) of the insertion receptacle (26) of the buttress body (20), and / or in that the at least one support body (30) provides or is formed as a support body (30) to be arranged in the connecting recess (VA).

10. The anchoring fitting as claimed in any one of the preceding claims, characterized in that the tie rod (50) comprises at least one rotary driving contour (54, 55), in particular a hexagon contour, for an assembly tool, in particular a hex wrench and / or an assembly socket or an assembly wrench, wherein it is advantageously provided that the rotary driving contour (54, 55) is arranged on an outer circumference of the tie rod (50), in particular in the region of the insertion section (52).

11. The anchoring fitting as claimed in any one of the preceding claims, characterized in that the tie rod (50) comprises a screw section (58), in particular to be screwed into on anchoring body, wherein the screw section (58) and the insertion section (52) are arranged on opposing longitudinal end regions of the tie rod (50).

12. The anchoring fitting as claimed in any one of the preceding claims, characterized in that it comprises an inclined surface arrangement (53) between the tie rod (50) and the clamping body (60) for the longitudinal adjustment of the tie rod (50) with respect to the buttress body (20) in the direction of the longitudinal axis (L) of the tie rod (50), wherein it is advantageously provided that the inclined surface arrangement (53) comprises at least one positioning inclination (53A, 53B), extending obliquely to the longitudinal axis (L) of the tie rod (50), in particular positioning inclinations (53A, 53B) extending at an angle to one another in the meaning of a depression or a projection, on the tie rod (50) and / or the clamping body (60) and / or that the inclined surface arrangement (53) extends transversely to the longitudinal axis (L) of the tie rod (50) with a transverse width, which enables an alignment of the tie rod (50) with respect to the buttress body (20) in the region of the alignment transverse width (Q) of the insertion receptacle (26).

13. The anchoring fitting as claimed in any one of the preceding claims, characterized in that the buttress body (20) is provided for anchoring the anchoring fitting in a first workpiece (W2) and the anchoring fitting (10) comprises at least one retaining body (70) for fastening in a retaining recess (HA) of a second workpiece (W1), wherein the retaining body (70) is connected to the tie rod (50) and / or fastening means, in particular screw means, are provided on the tie rod (50) and the retaining body (70) for the detachable fastening of the tie rod (50) on the retaining body (70) and / or the retaining body (70) comprises a passage opening (76) for at least one portion of the tie rod (50), wherein it is advantageously provided that the retaining body (70) has a flat shape having flat sides (74) opposite to one another and narrow sides (72), which are rounded in particular, extending between the flat sides (74) for the formfitting support at least in sections in the retaining recess (HA) and / or is in multiple parts, in particular two parts, and / or that the retaining body (70) comprises or forms a clamping body for clamping in the retaining recess (HA) of the second workpiece (W1) and / or that sthe retaining body (70) comprises at least one clamping arm (73), in particular a pair of clamping arms (73), for clamping in the retaining recess (HA) of the second workpiece (W1), wherein the at least one clamping arm (73) is adjustable by the tie rod (50) or a wedge body (80) actuatable by the tie rod (50) in a clamped position clamping the retaining body (70) in the retaining recess (HA).

14. The anchoring fitting as claimed in any one of the preceding claims, characterized in that the tie rod (50) forms a first tie rod (50A) and the buttress body (20) forms a first buttress body (20A) and the anchoring fitting (10) comprises at least one second tie rod (50B) and one second buttress body (20B) to be arranged in a second workpiece (W4), wherein the first tie rod (50A) and the second tie rod (50B) are detachably connectable to one another at the longitudinal end regions (57) thereof remote from the respective buttress bodies (20), in particular comprise screw connection means.

15. The anchoring fitting as claimed in any one of the preceding claims, characterized in that the maximum outer circumference and / or an envelope of the buttress body (20) around its insertion axis (SW) provided for insertion into the buttress recess (WA) is approximately circular, so that the buttress body (20) is insertable into the buttress recess (WA) if it has a circular inner contour.