Tool for internal screw bush

Abstract

The invention relates to a tool comprising a first part and a second part, a connecting portion and a fastening portion; wherein the first part and the second part extend from the connecting portion and together form an opening; wherein the tool comprises a bearing portion and an immersion portion, wherein the immersion portion extends from the bearing portion parallel to the opening and has an at least partially reduced wall thickness in relation to the bearing portion, and wherein the immersion portion comprises at least a first and a second engagement surface, wherein the first engagement surface and the second engagement surface lie opposite one another and point in the direction of the opening.

Description

[0001] The invention relates to a tool for a screw bushing, in particular with an attachment contour for an internal screw element of a screw bushing, which can apply a torque to the screw bushing. Such screw bushings are used in cable glands, for example, for cable feedthroughs of connection housings, whereby a defined torque must be applied to the bushing for secure screwing. For sealing, it is also essential to enable the application of a defined torque over the entire path of the screw connection, also to be able to use different cable diameters and to ensure sealing across the entire sealing area.

[0002] Common tools include open-end wrenches, ring wrenches, and socket wrenches, each of which provides internal engagement surfaces for engaging a screw element. Due to their closed tool shape, ring wrenches and socket wrenches cannot be used on cable glands, or only with significant disadvantages, as their engagement with the screw socket requires a cable end to be passed through the tool.

[0003] Particularly in the case of screw bushings with internal union nuts or screw elements, when a large travel distance is involved, for example when using small cable diameters in cable glands, it can happen with conventional tools such as open-end wrenches that the internal screw elements move so far into the screw bushing that it is no longer possible to apply the required torque or that applying the torque to the section of the screw elements that protrudes beyond the screw bushing results in damage to the screw bushing, the screw elements or the tool.

[0004] The German Patent and Trademark Office has searched the following prior art in the priority application for the present application: US 2003 / 0172781 A1, US 2,522,428 A, US 5,131,300 A, US 2006 / 0070498 A1 and DE 16 03 767 A.

[0005] It is therefore an object of the invention to provide a tool that ensures the application of a defined torque to a screw element, even with internal screw elements and / or large travel distances of the screw elements. A further object of the invention is to provide such a tool that has a plurality of contact surfaces and is particularly suitable for screw bushings in cable glands.

[0006] These objects are achieved according to the invention by tools according to the components of the invention and claims 1 and 9. Advantageous embodiments and further developments of the invention emerge from the subclaims and the preferred embodiments.

[0007] According to one component of the invention, such a tool comprises a first part and a second part, wherein the second part is hinged at a first end to a first end of the first part by means of a joint and together with the latter forms an opening, wherein the second part forms a fastening section at a second end with a second end of the first part; wherein the first part and the second part each comprise a support section and an immersion section, wherein the immersion section extends from the support section parallel to the opening and has an at least partially reduced wall thickness compared to the support section, wherein each immersion section comprises at least a first engagement surface and a second engagement surface, wherein the first engagement surface of one part and the second engagement surface of the other part are each opposite one another and point in the direction of the opening.

[0008] Such a tool according to the invention can be inserted into a screw bushing thanks to the design of the immersion sections, thus ensuring that the required torque is applied to an internal screw element even over the entire travel path. The arrangement of the immersion sections on the support section with increased wall thickness enables the tool to be used even at higher tightening torques without risking damage or deformation of the tool. The support section therefore increases the stability of the immersion sections and also makes it possible to implement the fastening section and the joint required for linking the parts. By linking the second part to the first part, the opening formed by the parts can also be opened laterally by pivoting the second part away from the first part via the joint.This allows the opening of the tool to be wrapped around a cable harness before use for screwing, thus significantly simplifying its use for cable glands. For example, the tool can first be opened sideways to guide a cable through the opening and then closed and used to engage a corresponding counterpart, such as a union nut or a screw element. The second part is preferably hinged to the first part by means of a bolt.

[0009] According to a preferred embodiment of the tool, the second part is hinged to the first part only in the region of the support section; and / or the first part and the second part form the fastening section only in the region of their support sections. This allows the insertion sections to have a significantly reduced wall thickness and a greater extension depth. This significantly improves the use of the tool for engaging internal screw elements.

[0010] According to a preferred embodiment of the tool, each immersion section comprises one half of a third engagement surface and a fourth engagement surface, and the third and fourth engagement surfaces are opposite one another and point in the direction of the opening.

[0011] As a result, the tool comprises a total of at least six contact surfaces, which enable improved power transmission and

[0012] - by distributing the force over an increased number of attack surfaces

[0013] - allow a smaller wall thickness of the immersion sections.

[0014] For example, such a tool can be used for hexagon union nuts or hexagon screw elements. The third and fourth engagement surfaces, or their halves, extend along the ends of the first and second parts, respectively, and only form engagement surfaces when the opening is closed.

[0015] Preferably, the engagement surfaces each have an angle of 120° to their adjacent engagement surfaces and / or the engagement surfaces merge into one another in an arc. This allows the tool to be used, for example, for hexagonal products according to ISO 272. The arcuate rounding also ensures the tool's use for twelve-point screw elements.

[0016] In particular, the arched rounding is designed in such a way that it can accommodate a further engagement surface or a section of a screw element.

[0017] Furthermore, for example, at least two opposite engagement surfaces form a 32 mm wrench size, for example for an M22 screw connection according to ISO 272. According to a preferred embodiment of the tool, each immersion section in the region of the first, third and fourth engagement surfaces has an at least partially reduced wall thickness.

[0018] The immersion section and the support section can have the same wall thickness, for example in the area of ​​the second contact surfaces.

[0019] Preferably, the surface of the immersion sections facing away from the opening has a circular arc shape, at least in the region of the first and second engagement surfaces. For example, the surface of the immersion sections facing away from the opening has a circular arc shape in the region of the first, second, and third engagement surfaces or in the region of the first, second, and fourth engagement surfaces.

[0020] According to a preferred embodiment of the tool, the first part comprises a pressure pin insert in the region of the fastening section.

[0021] Using such a push-pin insert, the tool can be attached to a tool holder, such as a torque wrench. The push-pin insert can also be located on the second part.

[0022] The fastening section preferably forms an external square. By means of the pressure pin insert, such an external square can be fastened in the tool holder of a tool. For example, the external square has the dimensions 9x12 mm. According to one embodiment of the invention, the receptacle of the external square in the tool holder fixes the first and the second part against one another, so that the articulation of the parts to one another is blocked and the opening can no longer be opened laterally. This makes it possible, for example, to open the tool laterally, close it around a cable harness and then pick it up in a tool holder for use. However, the tool is not limited to being picked up for use in a tool holder.In particular, the linkage of the first and second parts can also be blocked or fixed by the tool itself, so that it can also be used without accommodating the fastening section in a tool holder.

[0023] According to a preferred embodiment of the tool, at least one of the first and second parts has a groove at least in the region of the fastening section and the other part has a complementary tongue, wherein the groove and the tongue extend perpendicular to the opening.

[0024] The groove and tongue engage with each other in the arrangement of the first and second parts in which the opening is closed. The design of the groove in the tongue absorbs forces that act in the direction of the opening on the first and second parts and thus also on the joint connecting them. Furthermore, the parts enable easy control of the complete closure of the tool or the opening, thereby ensuring that the distances between the engagement surfaces required for engagement are present. For example, each part comprises a groove and a tongue, each of which complements a tongue and groove in the other part.

[0025] According to a preferred embodiment of the tool, each immersion section extends 4 mm from the support section parallel to the opening. The immersion sections can thus penetrate at least 4 mm into an opening, thus ensuring the required force transmission within the opening.

[0026] The invention further comprises a torque tool with a tool according to one of the embodiments described above.

[0027] The torque tool can be part of the fastening section, or it can include a tool holder that can accommodate the fastening section. The torque tool can be a commercially available torque tool with a commercially available tool holder, such as a square socket.

[0028] According to a further component of the invention, such a tool comprises a fastening section, a connecting section and a first part and a second part, wherein the first part and the second part each extend from one end of the connecting section in the same direction and form an opening; wherein the tool comprises a support section and an immersion section, wherein the support section is formed by the connecting section, the first part and the second part, wherein the immersion section extends from the support section parallel to the opening and has an at least partially reduced wall thickness compared to the support section, wherein the immersion section comprises at least a first and a second engagement surface, wherein the first engagement surface and the second engagement surface are opposite one another and point in the direction of the opening.

[0029] Such a tool according to the invention can be inserted into a screw bushing thanks to the design of the immersion section, thus ensuring that the required torque is applied to an internal screw element, even over the entire travel path. The arrangement of the immersion section on the support section with increased wall thickness enables the tool to be used even at higher tightening torques without risking damage or deformation of the tool. The support section therefore increases the stability of the immersion section and also allows the fastening section to be formed on it. The opening formed by the first part and the second part is also open laterally, giving the tool roughly the shape of an open-end wrench.This allows the opening of the tool to be placed around a cable harness before use for screwing, thus significantly simplifying its use with cable glands. For example, the tool can be slid sideways over the cable harness to guide a cable through the opening and then used to engage a corresponding counterpart, such as a union nut or screw element. The tool is preferably designed as a single piece.

[0030] According to a preferred embodiment of the tool, the immersion section comprises a third engagement surface and a fourth engagement surface, which are at least partially arranged on the connecting section and point in the direction of the opening.

[0031] As a result, the tool comprises a total of at least four contact surfaces, which enable improved force transmission and, by distributing the force across a greater number of contact surfaces, enable a thinner wall thickness of the penetration section. For example, such a tool can be used for hexagon union nuts or hexagon screw elements. The third and fourth contact surfaces extend side by side between the first and second contact surfaces. The penetration section and the support section can have the same wall thickness, for example, in the area of ​​the first and second contact surfaces.

[0032] Preferably, the surface of the immersion sections facing away from the opening has a circular arc shape, at least in the region of the first and second engagement surfaces. For example, the surface of the immersion sections facing away from the opening has an at least partially circular arc shape in the region of the first, second, third, and fourth engagement surfaces.

[0033] Preferably, the support section in the region of the connecting section comprises a surface facing the opening, which is perpendicular to the first and second engagement surfaces.

[0034] According to a preferred embodiment of the tool, the third and fourth engagement surfaces have an angle of 120° to each other and to one of the first and second engagement surfaces.

[0035] For example, the third engagement face is at an angle of 120° to the first and fourth engagement faces and is positioned between them. The fourth engagement face is at an angle of 120° to the second and third engagement faces and is positioned between them. The engagement faces thus form, for example, four sides of a hexagon socket. This allows the tool to be used, for example, for hexagon products according to ISO 272.

[0036] Furthermore, the attack surfaces preferably merge into one another in an arc shape.

[0037] The curved rounding, for example, also ensures the tool's use with twelve-point screw elements. In particular, the curved rounding is designed to accommodate an additional contact surface or a section of a screw element.

[0038] For example, the first and second attack surfaces form a 32 mm wrench size, for example for M22 screw connections according to ISO 272.

[0039] According to a preferred embodiment of the tool, the first part and the second part each comprise a projection on their side facing away from the connecting section in the region of the support section and the immersion section, which projection points in the direction of the opening.

[0040] The projection is located at the end of the first or second part that forms the opposite end to the connecting section, i.e., at the end facing away from the connecting section. The projections allow the tool to be held against the screw element, preventing it from slipping off the screw element with the side opening during screwing, even without inserting it into a screw socket. This simplifies the use of the tool and reduces damage. Nevertheless, the side opening of the opening is retained, allowing a cable or similar device to be inserted into the opening through the side opening.

[0041] For example, the projections at least partially have an angle of 120° to one of the first or second engagement surfaces. This allows them to engage a screw element and hold the tool to it.

[0042] According to a preferred embodiment of the tool, the fastening section comprises a pressure pin insert. By means of such a pressure pin insert, the tool can be attached to a tool holder, such as a torque wrench.

[0043] Preferably, the fastening section forms an external square. Using the pressure pin insert, such an external square can be accommodated in the tool holder of a tool.

[0044] For example, the outer square has the dimensions 9x12 mm.

[0045] According to a preferred embodiment of the tool, the immersion section extends 5 mm from the support section parallel to the opening.

[0046] The immersion sections can therefore penetrate up to 5 mm into an opening and thus ensure the necessary force transmission within the opening.

[0047] The invention further comprises a torque tool with a tool according to one of the above-described embodiments of the further component of the invention.

[0048] The torque tool can be part of the fastening section, or it can include a tool holder that can accommodate the fastening section. The torque tool can be a commercially available torque tool with a commercially available tool holder, such as a square socket.

[0049] According to a further component of the invention, such a tool comprises a first part and a second part, a connecting section and a fastening section; wherein the first part and the second part extend from the connecting section and together form an opening; wherein the tool comprises a support section and an immersion section, wherein the immersion section extends from the support section parallel to the opening and has an at least partially reduced wall thickness compared to the support section, and wherein the immersion section comprises at least a first and a second engagement surface, wherein the first engagement surface and the second engagement surface are opposite one another and point in the direction of the opening.

[0050] According to a preferred embodiment of the component of the invention, the connecting portion can be a joint by which the parts are hinged to one another, and the first and second parts, together with the connecting portion, form the opening. Each part comprises a part of the immersion portion.

[0051] According to a preferred embodiment of the component of the invention, the first part and the second part extend in the same direction from one end of the connecting section and form the opening.

[0052] The component of the invention also includes all technically possible embodiments of the previously described components of the invention.

[0053] All described embodiments can of course be combined with each other as desired, if this is technically possible.

[0054] Example

[0055] Preferred embodiments of the invention are explained in more detail below with reference to the figures. They show:

[0056] Fig. 1 a- a tool according to a first embodiment of the invention 1d; Fig. 2a- a tool according to a second embodiment of the invention 2c.

[0057] Some of the figures contain simplified, schematic representations. Identical reference symbols are used for similar, but possibly not identical, elements. Different views of the same elements may be scaled differently. Directional references such as "left," "right," "top," and "bottom" are to be understood with reference to the respective figure and may vary in the individual illustrations relative to the object depicted.

[0058] Fig. 1a to 1d show a tool 10 according to a first embodiment of the invention. This comprises a first part 12 and a second part 14 which are articulated to one another via a joint 16. Both parts together form an opening 18 which extends through the tool 10 in the form of a through-hole between the parts. The first part 12 comprises a support section 20a and an immersion section 22a, and the second part 14 comprises a support section 20b and an immersion section 22b. The support sections 20a and 20b together form the support section, and the immersion sections 22a and 22b together form the immersion section.

[0059] In particular, the second part 14 is hinged to a first end 24a of the first part 12 by a first end 24b. A second end 26b of the second part 14 and a second end 26a of the first part 12 together form a fastening section 28.

[0060] The first end 24a of the first part 12 comprises a joint part 30a, and the first end 24b of the second part 14 comprises two complementary joint parts 30b. The joint parts engage with each other and each have an opening through which a common bolt 32 extends and, together with the joint parts 30a, 30b, forms the joint 16. The bolt 32 forms the axis of rotation of the joint 16, with the axis of rotation extending parallel to the opening 18. The joint 16 is arranged only in the support sections 20a, 20b, thus forming part of the support section. The joint 16 is not limited to the illustrated embodiment, but can be designed in another suitable manner.

[0061] By linking the two parts 12, 14 to each other, they can be pivoted towards each other around the axis of rotation.

[0062] In particular, their second ends 26a and 26b can be pivoted away from each other or toward each other. By pivoting away from each other, the opening 18 is also opened laterally in the region of the ends 26a, 26b, i.e., the opening 18 extends not only through the tool 10, but also includes a lateral opening (not shown here). This makes it possible to insert a rod or, in particular, a cable or a cable harness into the tool through the lateral opening of the opening 18, so that an exemplary cable extends between the parts 12 and 14 through the opening 18.

[0063] By pivoting the two ends 26a, 26b toward each other, the opening 18 can be closed laterally again, so that it again forms a through hole between the parts 12 and 14 and through the tool 10. The exemplary cable is thus trapped in the opening 18, and the tool 10 can be moved along the cable.

[0064] When the ends 26a, 26b have been moved towards each other and abut one another as shown, the tool is arranged in the closed position (hereinafter referred to as the closed shape). The ends 26a, 26b together form the fastening section 28. The end 26a of the first part 12 is longer than the end 26b of the second part 14 and comprises a projection 34 which extends towards the end 26b such that, in the closed shape, the latter rests completely and positively against the projection 34. The two ends 26a, 26b thus form the fastening section 28 in the shape of an external square. The fastening section 28 serves as an engagement point with which the tool 10 can be moved, for example, around a rotational axis formed by its opening 18. It has, for example, the dimensions 9 x 12 mm.The fastening section 28 formed in this way can, for example, be received in a correspondingly complementary tool holder of a torque wrench, whereby the tool 10 represents an attachment tool for such a torque wrench. By correspondingly receiving the fastening section 28 in a tool holder, the pivoting movement of the two ends 26a, 26b away from each other is simultaneously prevented in the present embodiment, whereby the holder also has a locking function. However, the embodiment is not limited to locking or fixing by means of a holder; instead or additionally, the tool can comprise its own locking means or fixing means (not shown here), which prevent pivoting movement about the joint 16 in the arrangement of the parts 12, 14 relative to each other as described and shown here.The fastening section 18 can also be designed as a handle section, whereby the tool 10 can also be used without being incorporated into another tool such as a torque wrench.

[0065] The end 26a of the first part 12 comprises a bore 36 and a pressure pin insert 38 received therein. Instead of the end 26a, the end 26b can also comprise this bore and the pressure pin insert. The pressure pin insert 38 serves to lock or secure the tool 10 when it is received with its fastening section 28 in a tool holder, e.g., a torque wrench.

[0066] In the present embodiment, the first part 12 comprises a groove 40a and a tongue 42a, and the second part comprises a groove 40b and a tongue 42b. In the closed state, i.e. in the state in which the ends 26a, 26b abut one another in a form-fitting manner, the tongue 42a engages in the groove 40b and the tongue 42b engages in the groove 40a, thus resulting in a further form-fitting connection of the parts 12, 14. The grooves 40a, 40b and the tongues 42a, 42b extend perpendicular to the opening 18 and, in their form-fitting arrangement, absorb torsional forces which would otherwise act on the joint 16 perpendicular to the axis of rotation of the joint. This increases the stability of the tool in the closed state. The grooves 40a, 40b and the springs 42a, 42b can extend in their extent up to the end 26b of the second part 14 or extend up to the projection 34 of the end 26a of the first part 12.

[0067] Each of the immersion sections 22a, 22b extends from its respective support section 20a, 20b parallel to the opening 18. This means that it extends, for example, parallel to the axis of rotation of the joint 16 and perpendicular to the grooves 40a, 40b or to the springs 42, 42b.

[0068] In the present embodiment, the immersion sections 22a, 22b are designed such that they together form a closed shape and thus also have a part of the opening 18 between them. In particular, the immersion sections 22a, 22b each extend from the first end 24a, 24b of the respective parts 12, 14 toward the ends 26a, 26b, each terminating at the beginning of the fastening section of the parts 12, 14 formed by the ends 26a, 26b. They therefore do not extend in the region of the fastening section 28. Each of the immersion sections 22a, 22b comprises a first engagement surface 44a, 44b on its side facing the opening 18. The immersion section 22a of the first part 12 comprises the engagement surface 44a and the immersion section 22b of the second part 14 comprises the engagement surface 44b.Furthermore, each of the immersion sections 22a, 22b comprises a second engagement surface 46a, 46b on its side facing the opening 18. The immersion section 22a of the first part 12 comprises the engagement surface 46a, and the immersion section 22b of the second part 14 comprises the engagement surface 46b. The first engagement surface 44a, 44b of one part 12, 14 and the second engagement surface 46a, 46b of the other part 14, 12 are opposite one another and arranged parallel to one another, i.e., their surfaces extend parallel to one another. In other words, the engagement surfaces 44a and 46b are opposite one another and arranged parallel to one another and are the.

[0069] Attack surfaces 44b and 46a arranged opposite and parallel.

[0070] In the closed form, the

[0071] The engagement surfaces 44a, 44b, 46a, 46b serve as engagement surfaces of the tool. In particular, they are used to engage a screw element, such as a union nut, on at least two opposite sides. By rotating the tool 10 around the axis formed by the opening 18, a force is applied to the screw element, causing it to follow the movement of the tool as closely as possible. In particular, the engagement surfaces 44a, 44b, 46a, 46b can apply force to four sides of a screw element.

[0072] Preferably, the engagement surfaces 44a and 46a, as well as 44b, 46b, are arranged at an angle of 120° to each other and abut one another at one of their edges. This forms a geometric contour that allows for use with conventional hexagonal products, for example, according to ISO 272.

[0073] In the present embodiment, each immersion section 22a, 22b comprises one half 48a and 48b of a third engagement surface 48, wherein the third engagement surface 48 extends on the side of the tool 10 that includes the joint 16. The surfaces 48a, 48b are at least partially part of the respective ends 24a, 24b. Likewise, each immersion section 22a, 22b comprises one half 50a and 50b of a fourth engagement surface 50, wherein the fourth engagement surface 50 extends on the side of the tool 10 that includes the fastening section 28. The third engagement surface 48 and the fourth engagement surface 50 are opposite one another and arranged parallel to one another, i.e., their surfaces extend parallel to one another.

[0074] Preferably, the engagement surfaces 44a and 46a, as well as 44b, 46b, are each arranged at an angle of 120° to one of the engagement surfaces 48, 50 and abut one of these at one of their edges. In particular, the engagement surfaces 44a, 44b, 46a, 46b, 48, 50 are arranged in the shape of a hexagon, with two adjacent surfaces each forming an angle of 120° to one another.

[0075] In the present embodiment, the engagement surfaces 44a, 44b, 46a, 46b, 48, 50 each merge into one another in an arcuate manner. These arcs or the rounded portions between them are designed to ensure the use of the tool for twelve-point screw elements, or for hexagonal screw elements in which the engagement surfaces of the screw element merge into one another in a rounded or flattened portion. These arcs or rounded portions can be designed to represent additional engagement surfaces of the tool. The immersion sections 22a, 22b have, at least in part, a reduced wall thickness compared to the support sections 20a, 20b. The wall thickness or wall thickness refers to the diameter of the immersion sections 22a, 22b in a direction perpendicular to the opening 18.Due to the reduced wall thickness compared to the support sections 20a, 20b, the tool 10 can, with its insertion sections 22a, 22b, penetrate into a space or opening, e.g., a screw bushing, and engage a screw element therein. The insertion can also be achieved by a screwing movement performed with the tool 10. The arrangement of the joint 16 and the fastening section 28 in the area of ​​the support sections 20a, 20b supports this function by not preventing the insertion sections 22a, 22b from penetrating.

[0076] In the illustrated embodiment, the immersion sections 22a, 22b have a reduced wall thickness in the areas of their respective engagement surfaces 46a, 46b, 48a, 48b, and 50a, 50b compared to the support section. And, in the area of ​​their respective engagement surfaces 44a, 44b, they have the same wall thickness as the support sections 20a, 20b in that area, but are not limited thereto. The support sections 20a, 20b each have a projection 52a, 52b in the area of ​​the engagement surfaces 46a, 46b, which extends away from the opening 18 and increases the stability of the tool and thus also of the immersion sections 22a, 22b and prevents deformation. In the area of ​​the fourth engagement surface 50, the parts 12, 14 each form projections 54a, 54b pointing towards the opening in the area of ​​their support sections 20a, 20b, which also enable the described stabilization.They also improve access to a screw element by limiting the opening 18 and thus serving as a support. Likewise, the support sections 20a, 20b in the area of ​​the joint 16 form a projection through the joint, which also enables the described stabilization. The described projections make it possible to make the wall thickness of the immersion sections 22a, 22b correspondingly thinner than would be possible without such projections, thereby successfully preventing deformation of the tool 10 even under high forces.

[0077] Fig. 2a to 2c show a tool 110 according to a second embodiment of the invention. This comprises a first part 112 and a second part 114 which are connected via a

[0078] Connecting section 116 are connected and each extend in the same direction from one end 116a, 116b of the connecting section 116. Both parts together form an opening 118 which extends in a U-shape between the parts through the tool 110; in other words, the opening 118 forms a lateral U and thus resembles the opening of an open-end wrench. It therefore also includes a lateral opening 118a. Furthermore, the tool 110 includes a fastening section 128 which is arranged centrally on the connecting section 116 and extends away from the opening 118, more precisely extends in the opposite direction of the lateral opening 118a of the U-shaped opening 118.

[0079] The tool 110 comprises a support section 120 and a plunge section 122. The support section 120 is formed by the connecting section 116, the first part 112, and the second part 114. The plunge section 122 extends from the support section parallel to the opening 118 and perpendicular to the lateral opening 118a.

[0080] The lateral opening 118a allows a rod or, in particular, a cable or a cable harness to be inserted into the tool through the lateral opening 118, so that an exemplary cable extends between the parts 112 and 114 through the opening 118. The tool 110 can thus be moved along the cable and, for example, engage a screw element perpendicular to the cable.

[0081] The fastening section 128 is centrally located on the

[0082] Connecting section 116 is arranged and extends in the opposite direction of parts 112, 114. It forms an external square and serves as an engagement point with which tool 110 can be moved, for example, around a rotational axis formed by its opening 118. The fastening section 128 can, for example, be received in a correspondingly complementary tool holder of a torque wrench, whereby tool 110 represents an attachment tool for such a torque wrench.

[0083] The fastening section 128 comprises a bore 136 and a pressure pin insert 138 received therein. The pressure pin insert 138 serves to lock or secure the tool 110 when the tool 110 is received with its fastening section 128 in a tool holder, e.g., a torque wrench. The fastening section 118 can also be designed as a handle section, whereby the tool 110 can also be used without being mounted in another tool, such as a torque wrench.

[0084] The immersion section 122 extends from the support section 120 parallel to the opening 118. This means that it extends, for example, parallel to an axis of rotation formed by the opening 118 and perpendicular to the opening 118a and the fastening section 128.

[0085] In the present embodiment, the immersion section 122 is designed such that it forms a U-shaped opening and thus also has a portion of the openings 118, 118a between them. In particular, the immersion section 122 extends along the parts 112, 114 and at least partially along the connecting section 116. It therefore does not extend in the region of the fastening section 128.

[0086] The immersion section 122 comprises a first engagement surface 144 along the first part 112 on its side facing the opening 118. It comprises a second engagement surface 144 along the second part 112 on its side facing the opening 118. The first engagement surface 144 and the second engagement surface 146 lie opposite one another and are arranged parallel to one another. This means that their surfaces extend parallel to one another and perpendicular to the lateral opening 118a and the connecting section 116. They serve as engagement surfaces of the tool 110. In particular, they serve to engage a screw element, such as a union nut, on at least two opposite sides. By rotating the tool 110 about the axis of rotation formed by the opening 118, a force is applied to the screw element, causing it to follow the movement of the tool 110 as closely as possible.

[0087] In the present embodiment, the immersion section 122 comprises a third engagement surface 148 and a fourth engagement surface 150 which each abut against one another and against one of the first and second engagement surfaces 144, 146 and point in the direction of the opening 118.

[0088] Preferably, the engagement surfaces 144 and 146 are each arranged at an angle of 120° to one of the engagement surfaces 148, 150 and abut one of these at one of their edges. In particular, the engagement surfaces 144, 146, 148, 150 are arranged in the shape of part of a hexagon, with two adjacent surfaces each forming an angle of 120° to one another. The third engagement surface 148 is arranged between the engagement surfaces 144 and 150, and the fourth engagement surface 150 is arranged between the engagement surfaces 146 and 148. The engagement surfaces 144, 146, 148, 150 allow force to be applied to four sides of a screw element, which improves force transmission.

[0089] In the present embodiment, the engagement surfaces 144, 146, 148, 150 each merge into one another in an arcuate manner. These arcs or the rounded portions between them are designed to ensure the use of the tool for twelve-point screw elements, or for hexagonal screw elements in which the engagement surfaces of the screw element merge into one another in a curve or flattened portion. These arcs or rounded portions can be designed to represent additional engagement surfaces of the tool.

[0090] In the illustrated embodiment of the tool 112, the first part 112 and the second part 114 each comprise a projection 152a and 152b, respectively, in the region of the support section 120 and the immersion section 122, which points in the direction of the opening 118 and reduces the size of the lateral opening 118a. This makes it possible to prevent lateral slippage from a screw element, since the lateral opening 118a is smaller than the distance between the engagement surfaces 144, 146. The tool 110 must therefore be brought toward the screw element in the extension direction of the opening 118 or the immersion section 122. The projections 152a, 152b can comprise, at least at their end facing away from the parts 112, 114, a surface which is at an angle of 120° to the respective adjacent engagement surface 144, 146. The projections 152a, 152b also comprise the rounded portions or curves arranged between the engagement surfaces.

[0091] The immersion section 122 has, at least in part, a reduced wall thickness compared to the support section 120. The wall thickness refers to the diameter of the immersion section 122 in a direction perpendicular to the opening 118. Due to the reduced wall thickness compared to the support section 120, the tool 110 can immerse its immersion section 122 into a space or opening, e.g., a screw bushing, and engage a screw element therein. Immersion can also be achieved by a screwing movement performed with the tool 110. The arrangement of the fastening section 128 on the support section 120 or on the connecting section 116 supports this function by not preventing the immersion section 122 from immersing.

[0092] In the illustrated embodiment, the immersion section 122 has a wall thickness that is at least partially reduced in the areas of its engagement surfaces 144, 146, 148, 150 compared to the support section 120. And, in the area of ​​the projections 152a, 152b, it has the same wall thickness as the support section 120 in that area. In the area of ​​the engagement surfaces 148, 150, the support section 120 has a projection 154a, 154b formed by the ends 116a, 116b of the connecting section 116, which extends away from the opening 118 and increases the stability of the tool and thus also of the immersion section 122 and prevents deformation. In particular, this prevents the two parts 112, 114 or the immersion section 122 from spreading in the area of ​​the contact surfaces 144, 146 when they exert force on a screw element.

[0093] In the area where the third engagement surface 148 and the fourth engagement surface 150 adjoin one another, the support section 120, through the connecting piece 116, forms a projection 156 pointing toward the opening 118, which also enables the described stabilization. It also improves the approach to a screw element by serving as a boundary of the opening 118 or as a support. The described projections make it possible to make the wall thickness of the immersion section 122 correspondingly thinner than would be possible without such projections, thereby successfully preventing deformation of the tool 110 even under high forces.

[0094] The embodiments shown are not limited to their respective features, but can be combined with each other in any way, as far as technically possible.

[0095] Reference symbols

[0096] 10 tools

[0097] 12 first part

[0098] 14 second part

[0099] 16 joint

[0100] 18 Opening

[0101] 20a, 20b support section

[0102] 22a, 22b Immersion section

[0103] 24a, 24b first end

[0104] 26a, 26b second end

[0105] 28 Fastening section

[0106] 30a, 30b Joint parts

[0107] 32 bolts

[0108] 34 lead

[0109] 36 bore

[0110] 38 pressure pin insert

[0111] 40a, 40b groove

[0112] 42a, 42b spring

[0113] 44a, 44b first attack surface

[0114] 46a, 46b second attack surface

[0115] 48 third attack surface

[0116] 48a, 48b Part of the third attack surface

[0117] 50 fourth attack surface

[0118] 50a, 50b Part of the fourth attack surface 52a, 52b Projection

[0119] 54a, 54b projection

[0120] 110 tools

[0121] 112 first part

[0122] 114 second part

[0123] 116 connecting section

[0124] 116a, 116b Ends of the connecting section 116

[0125] 118 Opening

[0126] 118a side opening of the opening 118

[0127] 120 support section

[0128] 122 Immersion section

[0129] 128 fastening section

[0130] 136 bore

[0131] 138 pressure pin insert

[0132] 144 first attack surface

[0133] 146 second attack surface

[0134] 148 third attack surface

[0135] 150 fourth attack surface

[0136] 152a, 152b projection

[0137] 154a, 154b projection

[0138] 156 lead

Claims

Claims 1. Tool (10) comprising a first part (12) and a second part (14), wherein the second part (14) is articulated at a first end (24b) by means of a joint (16) to a first end (24a) of the first part (12) and together with the latter forms an opening (18), wherein the second part (14) forms a fastening section (28) at a second end (26b) with a second end (26a) of the first part (12);wherein the first part (12) and the second part (14) each comprise a support section (20a, 20b) and an immersion section (22a, 22b), wherein the immersion section (22a, 22b) extends from the support section (20a, 20b) parallel to the opening (18) and has an at least partially reduced wall thickness compared to the support section (20a, 20b), wherein each immersion section (22a, 22b) comprises at least a first engagement surface (44a, 44b) and a second engagement surface (46a, 46b), wherein the first engagement surface (44a, 44b) of one part (12, 14) and the second engagement surface (46b, 46a) of the other part (14, 12) are each opposite one another and point in the direction of the opening (18); 2. Tool according to claim 1, wherein the second part (14) is hinged to the first part (12) only in the region of the support section (20b); and / or wherein the first part (12) and the second part (14) form the fastening section (28) only in the region of their support sections (20a, 20b).

3. Tool according to claim 1 or 2, wherein each immersion section (22a, 22b) comprises one half (48a, 48b, 50a, 50b) of a third engagement surface (48) and a fourth engagement surface (50), and the third and fourth engagement surfaces (48, 50) are opposite one another and point in the direction of the opening (18).

4. Tool according to claim 3, wherein each immersion section (22a, 22b) in the region of the first, third and fourth engagement surfaces (44a, 44b, 48a, 48b, 50a, 50b) has an at least partially reduced wall thickness.

5. Tool according to one of the preceding claims, wherein the first part (12) comprises a pressure pin insert (38) in the region of the fastening section (28).

6. Tool according to one of the preceding claims, wherein at least one of the first and second parts (12, 14) has a groove (40a, 40b) at least in the region of the fastening section (28) and the other part (14, 12) has a complementary tongue (42b, 42a), the groove (40a, 40b) and the tongue (42b, 42a) extending perpendicular to the opening (18).

7. Tool according to one of the preceding claims, wherein each immersion section (22a, 22b) extends from the support section (20a, 20b) 4 mm parallel to the opening (18).

8. Torque tool comprising a tool (10) according to one of the preceding claims.

9. Tool (110) comprising a fastening section (128), a connecting section (116) and a first part (112) and a second part (114), wherein the first part (112) and the second part (114) extend in the same direction from each end (116a, 116b) of the connecting section (116) and form an opening (118); wherein the tool (110) comprises a support section (120) and an immersion section (122), wherein the support section (120) is formed by the connecting section (116), the first part (112) and the second part (114), wherein the immersion section (122) extends from the support section (120) extends parallel to the opening (118) and has an at least partially reduced wall thickness compared to the support section (120), wherein the immersion section (122) comprises at least a first engagement surface (144) and a second engagement surface (146), wherein the first engagement surface (144) and the second engagement surface (146) are opposite one another and point in the direction of the opening (118).

10. Tool according to claim 9; wherein the immersion section (122) comprises a third engagement surface (148) and a fourth engagement surface (150) which are arranged at least partially on the connecting section (116) and point in the direction of the opening (118).

11. Tool according to one of claims 9 or 10; wherein the third and fourth engagement surfaces (148, 150) have an angle of 120° to each other and to one of the first and second engagement surfaces (144, 146).

12. Tool according to one of claims 9 to 11; wherein the first part (112) and the second part (114) each comprise, on their side facing away from the connecting section (116), in the region of the support section (120) and the immersion section (122), a projection (152a, 152b) which points in the direction of the opening (118).

13. Tool according to one of claims 9 to 12, wherein the fastening portion (128) comprises a pressure pin insert (138).

14. Tool according to one of claims 9 to 12, wherein the immersion section (122) extends 5 mm from the support section (120) parallel to the opening (118).

15. Torque tool comprising a tool (110) according to one of the preceding claims 9 to 14.

Images