Screw tool torque support, set having a screw tool torque support, tool assembly and method for adapting a screw tool torque support

Abstract

The invention relates to a screwing tool torque support (1). The screwing tool torque support (1) has a support foot (2) and a support arm (3) which are connected to one another via a coupling region (6). A coupling torque and / or a coupling force can be transmitted via the coupling region (6). At least one degree of freedom for relative movement is present between the support foot (2) and the support arm (3). Furthermore, the invention relates to a set comprising a screwing tool torque support (1), a tool assembly, and a method for adapting a screwing tool torque support (1).

Description

TECHNICAL FIELD OF THE INVENTION

[0001] If a torque is applied to a screw connection using a screwdriver to tighten or loosen it, a reaction torque corresponding to the torque must be maintained on the housing of the screwdriver. With a hand-held screwdriver, the reaction torque must be applied by the fitter, which can be uncomfortable (particularly for a large number of screw connections to be operated successively and / or high screw torques to be applied), can be tiring and, in the worst case, can lead to injuries. To avoid this, screwdriver torque arms are used, via which the housing of the screwdriver can be supported with a supporting force in an area surrounding the screw connection. The supporting force acting on the screwdriver torque arm then generates the reaction torque, meaning that the fitter does not have to apply a reaction torque to the screwdriver.Instead, the installer can then concentrate on operating the tool and ensuring that it is correctly aligned.

[0002] The invention relates to such a screwing tool torque support. Furthermore, the invention relates to a set, a screwing tool assembly, and a method for adapting a screwing tool torque support. STATE OF THE ART

[0003] DE 20 2008 009 266 U1 discloses a torque arm for a screwing tool that is attached to a housing of a screwing tool via a fastening area. The fastening area has internal teeth with which the torque arm can be attached to an external toothing of the housing of the screwing tool at different rotational angle positions with respect to the screw axis. The torque arm for a screwing tool has a support area in the end area facing away from the fastening area, with which the torque arm for a screwing tool can be supported in an area surrounding the screw connection.

[0004] Further torque supports for screwing tools are known, for example, from the publications EP 2 149 431 A1, WO 2021 / 209 488 A1, EP 2 200 783 B1 and DE 11 2011 102 337 T5. OBJECT OF THE INVENTION

[0005] The invention is based on the object of proposing a screwing tool torque support which enables improved and / or simplified operation.

[0006] Furthermore, the invention is based on the object a correspondingly improved set with a screwing tool torque arm, a correspondingly improved tool assembly and a correspondingly improved method for adapting a screwing tool torque arm, a set or a tool assembly to propose. SOLUTION

[0007] The object of the invention is achieved by the features of the independent patent claims. Further preferred embodiments of the invention can be found in the dependent patent claims. DESCRIPTION OF THE INVENTION

[0008] The invention proposes a screwing tool torque support which serves to support a screwing torque which is applied to a screw connection around a screw axis by a screwing tool (preferably held automatically, for example held by a robot or an automation unit, or hand-held) in order to tighten or loosen the screw connection.

[0009] The torque support for a screwing tool has, on the one hand, a fastening area for attachment to a screwing tool. This fastening area can be designed in any way according to the state of the art (for example, with the engagement of a toothing of the torque support with a toothing of the housing of the screwing tool, with another form-fitting connection, or with a ratchet connection that locks in the direction of supporting the screwing torque but allows relative rotation in the other direction; the ratchet connection can also be reversible with regard to the locking direction).

[0010] Furthermore, the screwing tool torque support according to the invention has a support area. The support area serves to support the screwing tool torque support against a surrounding area. A support force is thus generated in the support area, which generates the reaction torque on the screwing tool torque support, which at least partially compensates for the screwing torque.

[0011] The invention proposes that the torque support for a screwing tool be constructed in (at least) two parts, comprising a support foot and a support arm. The support foot forms the support area, via which the torque support for a screwing tool is supported on the surrounding area. The support arm, on the other hand, forms the fastening area.

[0012] In order to support the screw torque despite the two-part design of the support foot and support arm, the support foot and support arm are connected to each other via a coupling area. The coupling area transmits a coupling moment and / or a coupling force between the support foot and support arm. However, the coupling area does not provide a rigid connection between the support foot and the support arm. Rather, the coupling area has at least one degree of freedom for a relative movement between the support foot and support arm. Via this degree of freedom, a change in the relative position between the support foot and thus the support area on the one hand and the support arm and thus the fastening area which can improve and / or simplify operation, for example by allowing individual adaptation to the ambient conditions.

[0013] The at least one remaining degree of freedom ensured by the coupling region may be a permanent degree of freedom or a degree of freedom used only for adjustment, while this degree of freedom is fixed for the operation of the screwing tool torque support and the support of the screwing torque.

[0014] If a degree of freedom is also available during operation of the screwing tool torque support to support the screwing torque, the degree of freedom can be limited on one or both sides (for example by means of a stop) or unlimited.

[0015] It is also possible that this degree of freedom exists only for one direction, while the degree of freedom for an opposite direction is blocked, as is the case, for example, for a ratchet connection.

[0016] The transmission of the coupling torque and / or the coupling force can be free of play or with play.

[0017] It is possible that a relative movement along the degree of freedom between the support foot and the support arm via a force-fitting, form-fitting or material-fitting connection, via a friction connection, a locking connection or another connection, continuously or in stages during operation with a transmission of the screw torque and / or outside of operation, in particular for adjustment, is secured. A locking mechanism can also be provided for positions along the movement along the (respective) degree of freedom. Finally, a screw connection or other fixed connection between the support foot and support arm is also possible if the degree of freedom is temporarily no longer required (for example, after an adjustment or while supporting a screwing torque via the screwing tool torque support). A connection or securing device via a retaining ring, through-bolt, etc. is also possible. If the relative movement along the degree of freedom is secured by a material-to-material connection, in particular welding or gluing, the screwing tool torque support can be delivered to the customer without such a connection, with the customer then establishing the material-to-material connection in an operating position along the degree of freedom desired by the customer.It is also possible that although the material connection, in particular adhesive bonding, is secured, the material connection can be broken, which can be done, for example, by destroying the material connection by applying sufficient forces or by chemically dissolving the material connection.

[0018] The coupling force potentially transmitted via the coupling area is, in particular, a transverse force of the support foot and support arm, which corresponds to the support force, which is the contact or reaction force between the support foot and the surrounding area. The coupling moment potentially transmitted via the coupling area can be a torsional moment resulting from the support force and / or a bending moment acting on the support foot and / or support arm.

[0019] Without limiting the invention thereto, the screwing tool torque support can functionally have a lever section, an offset section and a foot section.

[0020] In this case, the lever section can be oriented radially to the screw axis and serve to create a radial distance between the support area and the fastening area.

[0021] The offset section adjoining the lever section may be oriented parallel to the screw axis and produce an axial offset of the fastening area relative to the support area.

[0022] The foot section, which can be connected to the offset section, can then form the support area, wherein the foot section can extend in a plane whose surface normal corresponds to the screw axis.

[0023] For one embodiment, the lever section, the offset section, and the foot section can form a type of Z with angles (e.g., right angles or angles greater than 90°) between the legs of the Z and the sections. For such embodiments, the coupling region provided according to the invention can be arranged between the lever section and the offset section and / or between the offset section and the foot section. However, it is also possible for the coupling region to divide the lever section, the offset section, or the foot section into two sections.

[0024] It is possible for the foot section to have a non-circular or non-circular outer contour (e.g., a cam-shaped outer contour) in a section transverse to the screw axis or to be arranged eccentrically to a longitudinal axis of the offset section. This means that the support area can be arranged with a lever arm relative to the longitudinal axis of the offset section, so that the support force acting in the support area generates a torsional moment that acts on the offset section and is transmitted via it. The non-circular or eccentric outer contour of the foot section can be used to change the relative position between the fastening area and the support area by changing the angular position of the support foot and thus of the foot section.

[0025] The at least one degree of freedom provided by the coupling region can be any desired degree of freedom, for example, a degree of freedom along a curve, a translational or rotational degree of freedom, a rotational or pivoting degree of freedom, etc. For a particular proposal of the invention, a degree of freedom for the relative movement between the support foot and the support arm is a displacement degree of freedom, via which the support foot can be displaced relative to the support arm. For example, a type of telescoping of a section can be achieved via such a displacement degree of freedom.

[0026] For example, a degree of freedom of displacement can be provided between two lever section parts, via which the distance of the foot section and thus of the support area from the fastening area can then be changed in a direction transverse to the screw axis.

[0027] Alternatively or cumulatively, it is possible for the degree of freedom of displacement to be provided between two offset section parts, so that this degree of freedom of displacement can be used to adjust the offset between the foot section and the fastening area. This design is based in particular on the following insight: If the support area is arranged in a plane with the screw connection, the surface normal of which corresponds to the screw axis, the reaction force is supported by a support force on the screw connection itself. If, on the other hand, the screw connection and the support area are arranged in planes that are offset from one another in the direction of the screw axis, the force couple formed by the support force and the reaction force leads to a tilting moment, which must be held by the fitter.If the installer fails to hold the screw correctly or applies too little holding torque, the screwdriving tool will tilt, which means that the required torque cannot be applied to the screw connection. This problem can be avoided or mitigated by providing a degree of freedom of movement between the support foot and the support arm to compensate for the misalignment.

[0028] A further aspect of the invention addresses the problem that, depending on the environmental conditions, different rotational angles are required between the support foot and the support arm. To enable this, it is proposed that the degree of freedom for the relative movement between the support foot and the support arm be a rotational degree of freedom.

[0029] It is also possible for the degree of freedom for the relative movement between the support foot and the support arm to be a degree of freedom for assembly and disassembly. The support foot can be disassembled from the support arm using the disassembly degree of freedom. The same support foot can then be reassembled in a different orientation with the support foot. Alternatively, it is possible for a different support foot to be mounted in the same orientation or a different orientation with the support arm using the degree of freedom for assembly. This type of assembly and disassembly ultimately also allows for an adjustment of the relative position between the support area and the fastening area of ​​the screwing tool torque support according to the invention.

[0030] According to one proposal of the invention, the screwdriving tool torque support (at least for the force flow to support the screwing torque) has exactly two parts, namely the support foot and the support arm, whereby it is entirely possible that in addition to the supporting support arm and the supporting support foot, further non-supporting components or components that are not part of the force flow to support the screwing torque are present. According to one proposal of the invention, however, the support arm and / or the support foot are designed in two or more parts. It is possible that the at least two support arm parts or support foot parts are connected to one another via a further coupling area which (like the coupling area between the support foot and support arm) transmits a coupling torque and / or a coupling force, but ensures at least one degree of freedom for relative movement between the two parts.

[0031] The invention also proposes that the coupling region be a shaft-hub connection that transmits a torque about a coupling axis in a form-fitting and / or force-fitting manner. This torque can preferably be the torsional moment caused by the supporting force in the offset section. In this case, the selected shaft-hub connection, for a particular embodiment, can have a translational degree of freedom along the coupling axis, thus providing a degree of freedom to compensate for an offset. This degree of freedom can also be effective during operation and while supporting a screw torque.

[0032] Within the scope of the invention, there are numerous possibilities for the design of the shaft-hub connection, whereby shaft-hub connections known from the prior art can be used. For example, it is possible to use a Hirth gear, which can be released by the installer by applying a spring, allowing a change in the rotation angle and the re-engagement of the gears by the spring. In this case, the inclination angle of the Hirth gear must be adjusted in such a way that the required torques can be transmitted.

[0033] In another embodiment of the invention, the shaft-hub connection is formed with an outer profile region of the support arm, while the support foot has a corresponding inner profile region. It is also possible for the support foot to have an outer profile region and the support arm to have a corresponding inner profile region. The outer profile region and the inner profile region can be designed in any desired manner in accordance with the profiles known from the prior art. Preferably, it is a wedge, tooth, polygonal, or multi-edge profile. The use of such a shaft-hub connection has the advantage, in addition to ensuring a reliable, rotationally fixed connection, that a relative displacement of the outer profile region and the inner profile region is also possible, which can be used to compensate for an offset.

[0034] The torque arm for the screwdriving tool preferably has a loss prevention device. This loss prevention device can, for example, be a one- or two-sided limitation of the degree of freedom, for example, by a stop.

[0035] The loss protection can, for example, be effective if the assembly and disassembly degree of freedom is used to assemble the same support foot in a different orientation with the support arm or to assemble another support foot in the same orientation or a different orientation with the support arm, whereby several support feet can then be secured via a loss protection or there is a detachable connection of the loss protection, which can then be optionally connected to one of the different support feet.

[0036] There are many possible designs for the loss prevention device within the scope of the invention. One proposal involves a flexible safety cord. The safety cord is an elongated, flexible element, such as a rope, a wire, a chain, or similar. The safety cord can then be attached in any manner at both ends: to the support arm on the one hand and to the support base on the other, using a detachable or non-detachable connection.

[0037] Alternatively or cumulatively, it is possible for the support arm to have two axial sections to form the loss prevention device. The support foot is displaceable (preferably exclusively) between these two axial sections. In a first axial section, the support foot is connected to the support arm in a rotationally fixed manner (e.g. via the positive engagement between an outer profile area and an inner profile area), which can then be used to transmit a coupling torque between the two axial sections. In a second axial section, however, the support foot is rotatable relative to the support arm, which does not allow the transmission of a torque, but does allow a change in the relative alignment of the two axial sections, which ultimately can bring about a change in the relative alignment of the support area with respect to the fastening area.

[0038] A further solution to the problem underlying the invention is a set. This set has a screwing tool torque support as previously described.

[0039] This torque arm for screwdriving tools features a support leg. The set also includes at least one additional support leg, preferably with a different geometry than the first one. The set allows for adaptation to the environmental conditions and adjustment of the relative position between the fastening area and the support area by exchanging the support legs.

[0040] A further solution to the problem underlying the invention is provided by a tool assembly comprising a screwing tool in which a motorized screwing torque is generated. For this purpose, the screwing tool can have, for example, an electric, pneumatic, or hydraulic drive. The tool assembly further comprises a screwing tool torque support, as previously described. For applying the screwing torque to a screw connection, the screwing tool torque support is fastened to a corresponding fastening area formed on the housing of the screwing tool by means of the fastening area of ​​the screwing tool torque support.

[0041] A further solution to the problem underlying the invention is a method which serves to adapt a screwing tool torque support, a set or a tool assembly to a relative position (in particular a distance, a height offset and / or an alignment) between a screw connection and a surrounding area.

[0042] In this method, the distance or offset between the bolted connection and the surrounding area is adjusted by moving the support foot along the degree of freedom relative to the support arm. This can be done before the bolting torque is applied to adapt to the ambient conditions. It is also possible for the displacement along the degree of freedom to occur during operation and the application of the bolting torque to allow for compensating movement.

[0043] Alternatively or cumulatively, in the method according to the invention, an adjustment of a relative position between the screw connection and the surrounding area is carried out by rotating the support foot by the rotational degree of freedom relative to the support arm.

[0044] Alternatively or cumulatively, it is possible to adjust a relative position between the screw connection and the surrounding area by dismantling the support foot from the support arm by a movement along the assembly and disassembly degree of freedom and the same support foot is mounted in a different orientation by a movement along the assembly and disassembly degrees of freedom and / or another support foot is mounted in the same orientation (preferably with a different geometry of the support foot) or in a different orientation by a movement along the assembly and disassembly degrees of freedom.

[0045] Advantageous further developments of the invention emerge from the patent claims, the description and the drawings.

[0046] The advantages of features and combinations of several features mentioned in the description are merely exemplary and can be used alternatively or cumulatively without the advantages necessarily having to be achieved by embodiments according to the invention.

[0047] With regard to the disclosure content – ​​not the scope of protection – of the original application documents and the patent, the following applies: Further features can be found in the drawings – in particular the illustrated geometries and the relative dimensions of several components to one another, as well as their relative arrangement and operative connection. The combination of features of different embodiments of the invention or features of different patent claims is also possible, deviating from the selected references of the patent claims, and is hereby suggested. This also applies to features that are illustrated in separate drawings or mentioned in their description. These features can also be combined with features of different patent claims.Likewise, features listed in the patent claims may be omitted for further embodiments of the invention, but this does not apply to the independent patent claims of the granted patent.

[0048] The number of features mentioned in the patent claims and the description is to be understood as meaning that exactly this number or a greater number than the stated number is present, without the need for the explicit use of the adverb "at least." Thus, for example, if one degree of freedom is mentioned, this is to be understood as meaning that exactly one degree of freedom, two degrees of freedom, or more degrees of freedom are present. The features mentioned in the patent claims may be supplemented by further features or may be the only features present in the subject matter of the respective patent claim.

[0049] The reference signs contained in the patent claims do not represent a limitation of the scope of the subject-matter protected by the patent claims. They serve only the purpose of making the patent claims easier to understand. BRIEF DESCRIPTION OF THE CHARACTERS

[0050] In the following, the invention is further explained and described with reference to preferred embodiments shown in the figures. Fig. 1 shows a screwing tool torque support in a spatial view. Fig. 2 shows a screwing tool torque support in a spatial exploded view. Fig. 3 shows a tool assembly with a handheld screwing tool with a screwing tool torque support during assembly of a screw connection in a support environment in a spatial view. Fig. 4 shows the tool assembly with the hand-held screwing tool with the screwing tool torque support according to Fig. 3from a different angle and when dismantling the screw connection. Fig. 5 shows a three-dimensional view of a set with a screw tool torque support and another support foot. Fig. 6 shows a screw tool torque support in a side view. Fig. 7 shows a screwing tool torque support in a partially sectioned side view. FIGURE DESCRIPTION

[0051] Fig. 1 shows a screwing tool torque support 1 with a support foot 2 and a support arm 3.

[0052] The support arm 3 has a fastening area 4 at one end, through the center of which a screw axis 5 runs. At the other end, the support arm 3 is connected to the support foot 2 in a coupling area 6. The support arm 3 has several sections: A lever section 8 extends radially from the screw axis 5 to the screw axis. An offset section 9 adjoins the lever section 8. The offset section 9 extends spaced apart and parallel to the screw axis 5 and along a coupling axis 10.

[0053] The support foot 2 has a support area 7 which extends circumferentially around the support foot 2.

[0054] In this exemplary embodiment, the support foot 2 and the support arm 3 are connected to one another in the coupling region 6 by a positive shaft-hub connection 32 in a rotationally fixed manner about the coupling axis 10, wherein for the exemplary embodiment shown, the shaft-hub connection 32 is formed with an outer profile region 11 of the offset section 9, which is designed here as a splined shaft 33, and a corresponding inner profile region 12 of the support foot 2, which is designed here as a splined bore 34.

[0055] In Fig. 2A screwing tool torque support 1 is shown in its individual parts as an exploded view, which according to Fig. 1 is formed. On the underside, the screwing tool torque support 1 in this embodiment has a loss protection device 13. The loss protection device 13 has a bolt 14 with a transverse bore 35 and a spring clip 15. The bolt is screwed coaxially to the coupling axis 10 with a threaded bore of a lower end face of the offset section 9. The longitudinal extent of the spring clip 15 is greater than the diameter of the inner profile area 12, so that disassembly of the support foot 2 from the support arm 3 is blocked. When the spring clip 15 is disassembled from the bolt 14, the support foot 2 can be disassembled from the support arm 3.

[0056] Fig. 3shows a tool assembly 16 with a hand-held screwing tool 17 and a screwing tool torque support 1. On the screwing tool 17 there is also a socket 18 for introducing a screwing torque 19 around a screw axis 5 for mounting a Fig. 3 screw connection 20 at least partially covered by the socket 18. The resulting reaction torque is introduced in the form of a supporting force 21 via the support arm 3 and the support foot 2 in the support area 7 into a surrounding area 22. The extension of the lever section 8 provides a lever arm for the supporting force 21. The offset section 9 reduces at least an offset of the plane in which the supporting force 21 acts and the plane in which the socket 18 applies the screw torque 19 to the screw connection 20. The shape of the lever section 8, the offset section 9, and in particular of the support foot 2 enables adaptation to the surrounding area 22.

[0057] In Fig. 4 the tool assembly 16 is according to Fig. 3 shown. For disassembly, a screw torque 23 is introduced into the screw connection 20 in the opposite direction of the screw torque 19 for assembly. The resulting reaction torque is introduced as a supporting force 24 via the support arm 3 and the support foot 2 into the surrounding area 22. The support foot 2 has a different angle of rotation relative to the support arm 3 than during assembly. A different section of the support area 7 of the support foot 2 is in contact with a surrounding area 22, which is arranged at a different location than in Fig. 3 .

[0058] Fig. 5shows a set 25 with a screwing tool torque support 1 according to the previous illustrations, with a support arm 3, a support foot 2, and a mounted additional support foot 26. Both support feet 2, 26 have an identically shaped inner profile area 12 in their coupling area 6, so that the support feet 2, 26 are interchangeable. The support feet 2, 26 have differently shaped support areas 7 for adaptation to differently shaped surrounding areas 22.

[0059] Fig. 6 shows another embodiment of a screwing tool torque support 1 in a side view. According to Fig. 1The screwing tool torque support 1 has a support foot 2 or 26 with a support area 7 and a support arm 3 with a fastening area 4, which are connected via a coupling area 6. In this case, the offset section 9 has two axial sections 27, 28, between which the support foot 2, 26 is displaceable. In one axial section 27, the support foot 2, 26 is connected to the support arm 3 in a rotationally fixed manner by the shaft-hub connection 32, but is displaceable in the direction of the coupling axis 10. In the other axial section 28, the support foot 2, 26 is rotatable relative to the support arm 3 about the coupling axis 10 in order to enable a different relative rotational angle position of the support foot 2, 26, in which the support foot 2, 26 can then be moved back into the first axial section 27 in order to then operate the screwing tool torque support 1 in this rotational angle position.A spring clip 36, which extends through a transverse bore 37 of a bolt 38, separates the axial sections 27, 28 from one another. To change the angle of rotation, the spring clip 36 must therefore be removed from the bolt 38. The spring clip 36 also forms a loss prevention device. For a removed spring clip 36, the support foot 2, 26 is secured by an additional loss prevention device 13. For this purpose, a disk 39 is mounted on the bolt 38, which rests on the head of the bolt 38 and thus limits the axial section 28. Since the diameter of the disk 39 is larger than the diameter of the wedge bore 34, the support foot 2, 26 cannot pass through the disk 39.

[0060] Fig. 7shows a highly schematic view of another embodiment of a screwdriving tool torque support 1 in a sectional side view. The support arm 3 is constructed in two parts. The radially inner lever section part 8a has the fastening area 4. The radially outer lever section part 8b is connected to the radially inner lever section part 8a via a lever coupling area 29. The outer lever section part 8b can be telescopically displaced radially relative to the inner lever section part 8a via the lever coupling area 29. The lever coupling area 29 ensures a rotationally fixed coupling about the longitudinal axis of the lever section 8, but a degree of freedom of displacement in the direction of the longitudinal axis of the lever section 8. For this purpose, one lever section part 8a, 8b can have a non-circular outer cross-section, which is displaceably guided in a corresponding inner cross-section of the other lever section part 8b, 8a.In this embodiment, the support arm 3 has only the lever section 8. In contrast, the support foot 2, 26 has a foot section 40 and the offset section 9. The inner profile region 12 is located radially outward on the outer lever section part 8b, which forms the shaft-hub connection 32 with the outer profile region 11 of the offset section 9.

[0061] The support area 7 is located at the lower end of the support foot 2, 26, namely in the foot section 40. A circumferential groove 30 is formed in the upper end of the offset section 9, in which a retaining ring 31 is located. In this embodiment, this forms the loss prevention device 13.

[0062] As in Fig. 1As can be seen, the support foot 2 or the foot section 40 can have a bore 41 that is oriented parallel to the viewing axis 5. A support or shear pin can be inserted into this bore 41, which extends downwards from the support foot 2 or the foot section 40. In this case, the support area 7 can be formed by the freely downwardly projecting section of the support or shear pin, which can then, for example, be received in a recess or corresponding bore in the surrounding area 22.

[0063] The exemplary embodiments illustrated in the figures merely show some possible configurations for the degrees of freedom of the screwing tool torque support. Alternatively or cumulatively, the offset section 9 may be formed in two parts, providing, for example, a rotational degree of freedom about the coupling axis 10 and / or a telescopic translational degree of freedom along the coupling axis 10. Alternatively or cumulatively, the base section 40 may be formed in two parts, in which case assembly of the two parts in different angular positions is possible and / or the two parts of section 40 may provide a telescopic degree of freedom in a direction radial to the screw axis 5.

[0064] If a force flow in the screw torque support for supporting the supporting force occurs via more than two parts, the parts can be divided into two groups in the order of force flow. One group of parts can then form the support foot as defined by the patent claims, while the other group of parts can form the support arm as defined by the patent claims. Different subdivisions into the two groups are possible depending on whether at least one part in the middle of the force flow is assigned to the support arm or the support foot.

[0065] It is possible that a degree of rotational freedom of the support foot about an axis parallel to the screw axis relative to the support arm in the mounted operating position exhibits a rotational play defined by a first and a second stop. In this case, the tightening torque for tightening the screw connection is transmitted via the first stop, while the loosening torque for loosening the screw connection is transmitted via the second stop rather than the first stop. In this case, the rotational play can be, for example, greater than 10°, greater than 20°, greater than 40°, greater than 90°, or even greater than 135°. LIST OF REFERENCE SYMBOLS

[0066] 1Screwing tool torque support 2Support foot 3Support arm 4Fastening area 5Screw axis 6Coupling area 7Support area 8Lever section 9Offset section 10Coupling axis 11Outer profile area 12Inner profile area 13Loss protection 14Bolt 15Spring clip 16Tool assembly 17Screwing tool 18Socket 19Screwing torque (assembly) 20Screw connection 21Support force (assembly) 22Surrounding area 23Screwing torque (disassembly) 24Support force (disassembly) 25Set 26Support foot (alternative) 27Axial section (rotatable) 28Axial section (rotatable) 29Lever coupling area 30Keyway 31Retaining ring 32Shaft-hub connection 33Splined shaft 34Splined bore 35Cross hole 36Spring clip 37Cross hole 38Bolt 39Disk 40Foot section 41Hole

Claims

1. A screwing tool torque support (1) for supporting a screwing torque (19, 23) which is applied by a screwing tool (17) around a screw axis (5) to a screw connection (20) which has a fastening area (4) for fastening to a screwing tool (17) and a support area (7) for support on a surrounding area (22), characterized in that the screwing tool torque support (1) a) has a support foot (2) which forms the support region (7), b) and a support arm (3) which forms the fastening region (4), wherein the support foot (2) and the support arm (3) are connected to one another via a coupling region (6) which transmits a coupling moment and / or a coupling force between the support foot (2) and the support arm (3) and has at least one degree of freedom for a relative movement between the support foot (2) and the support arm (3).

2. Screwing tool torque support (1) according to claim 1, wherein a degree of freedom for the relative movement between the support foot (2) and the support arm (3) is a displacement degree of freedom over which the support foot (2) is displaceable relative to the support arm (3).

3. Screwing tool torque support (1) according to one of the preceding claims, wherein a degree of freedom for the relative movement between the support foot (2) and the support arm (3) is a rotational degree of freedom, via which the support foot (2) can be transferred into different rotational angle positions relative to the support arm (3).

4. Screwing tool torque support (1) according to one of the preceding claims, wherein a degree of freedom for the relative movement between the support foot (2) and the support arm (3) is an assembly and disassembly degree of freedom via which the support foot (2) can be disassembled from the support arm (3) and a) the same support foot (2) can be reassembled in a different rotational angle position with the support arm (3) or b) another support foot (26) can be mounted in the same rotational angle position or a different rotational angle position with the support arm (3).

5. Screwing tool torque support (1) according to claim 3 or 4, wherein an offset section (9) is provided which is oriented parallel to the screw axis (5) and whose longitudinal axis specifies the degree of freedom of rotation and / or assembly and disassembly.

6. Screwing tool torque support according to one of the preceding claims, wherein the support arm (3) and / or the support foot (2) is formed in two or more parts.

7. Screwing tool torque support (1) according to one of the preceding claims, wherein the coupling region (6) is a shaft-hub connection (32) which transmits a moment about a coupling axis (10) in a form-fitting and / or force-fitting manner, but has a translational degree of freedom along the coupling axis (10).

8. Screwing tool torque support (1) according to claim 7, wherein to form the shaft-hub connection (32) a) the support arm (3) has an outer profile region (11) and the support foot (2) has a corresponding inner profile region (12) or b) the support foot (2) has an outer profile region (11) and the support arm (3) has a corresponding inner profile region (12).

9. Screwing tool torque support (1) according to one of the preceding claims, wherein the screwing tool torque support (1) has a loss prevention device (13).

10. Screwing tool torque support according to claim 9, wherein the screwing tool torque support (1) has a flexible securing strand as a loss protection device (13) which connects the support arm (3) and the support foot (2).

11. Screwing tool torque support (1) according to one of claims 9 and 10, wherein the support arm (3) has two axial sections (27, 28) and the support foot (2) is displaceable between them, wherein in one axial section (27) the support foot (2) is connected to the support arm (3) in a rotationally fixed manner and in the other axial section (28) is rotatable relative to the support arm (3).

12. Set (25) with a screwing tool torque support (1) according to one of claims 1 to 11 and at least one further support foot (26).

13. Tool assembly (16) with a preferably hand-held screwing tool (17) with a motor-driven screwing torque generation and a screwing tool torque support (1) according to one of claims 1 to 11, which is fastened to the screwing tool (17) by means of the fastening region (4).

14. A method for adapting - a screwing tool torque support (1) according to one of claims 2 to 5 or one of claims 6 to 11 in relation to one of claims 2 to 5, - a set (25) according to claim 12 in relation to one of claims 2 to 5 or - a tool assembly (16) according to claim 13 in relation to one of claims 2 to 5 to a relative position between a screw connection (20) and a surrounding area (22), in which a) a distance between the screw connection (20) and the surrounding area (22) is adapted by displacing the support foot (2) along the degree of freedom of displacement relative to the support arm (3), and / or b) an offset between the screw connection (20) and the surrounding area (22) is adjusted by displacing the support foot (2) along the degree of freedom of displacement relative to the support arm (3),and / or c) a relative position between the screw connection (20) and the surrounding area (22) is adjusted by rotating the support foot (2) relative to the support arm (3) by the rotational degree of freedom, and / or d) a relative position between the screw connection (20) and the surrounding area (22) is adjusted by dismantling the support foot (2) from the support arm (3) by a movement along the assembly and dismantling degree of freedom and mounting the same support foot (2) in a different rotational angle position by a movement along the assembly and dismantling degree of freedom, and / or e) a relative position between the screw connection (20) and the surrounding area (22) is adjusted bythat the support foot (2) is disassembled from the support arm (3) by a movement along the assembly and disassembly degree of freedom and another support foot (26) is mounted in the same rotational angle position or a different rotational angle position by a movement along the assembly and disassembly degree of freedom.,

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