WO2014044677A1 - Threaded sleeve, profile connection, and method for establishing a profile connection - Google Patents

Description

 Threaded sleeve, profile connection and method for producing a profile connection

The invention relates to a threaded sleeve for producing a profile connection according to the preamble of claim 1, a profile connection according to claim 13, a method for producing the profile connection according to claim 14 and the use of a threaded sleeve according to claim 15 for producing a profile connection.

Profile joints comprising at least a first elongated profile bar, usually made of an aluminum alloy are well known. In this case, usually threaded sleeves are used with external thread, which are screwed into an undercut longitudinal groove of a profiled bar and usually serve as an abutment for a screw head of a connecting screw, the connecting screw passes through a through hole of the threaded sleeve and with a screw thread with a counter bearing , in particular a groove block is screwed, which is usually in the profile of a groove orthogonal profile bar.

A generic profile connection is known from EP 1 574 725 B1, which comprises a threaded sleeve with external thread, wherein the threaded sleeve is provided with a female thread in a special embodiment for producing a butt joint, in which two profile bars abut one another, wherein a connecting screw , as shown in FIG. 7 of the publication, is supported with a screw head on a threaded sleeve which cooperates with the aforementioned threaded sleeve, the connecting screw being connected with its external thread to the internal thread of a threaded sleeve. is screwed and braced in this way, the profile bars against each other. In the known profile connection several things are perceived as disadvantageous. Thus, the threaded sleeve is operable or rotatable only from one side. In addition, the external thread of the threaded sleeve is formed as a forming thread with which a Spanabhub to be avoided when screwing the threaded sleeve in the profile. By this measure, the threaded sleeve is relatively difficult to rotate. An alternative threaded connection is known from EP 0 458 069 B1, inner threaded sleeves with a self-tapping external thread being used here, which are more easily rotatable. In addition, it is advantageous that the known threaded sleeve has drive means extending on both axial ends, wherein the two end drive sections are spaced apart by a section of a passage opening which is free of internal threads. The external thread of the threaded sleeve ends at a clear distance from the axial ends of the threaded sleeve. The scope of the known threaded sleeve is limited - in particular no screwing with the recorded in a profile groove threaded sleeve is possible.

From DE 20 2004 017 885 U1 a profile connection is known, in which a threaded sleeve is used which has self-tapping thread flanks on the outer circumference, these thread flanks however being interrupted several times in the circumferential direction. The well-known threaded sleeve is internally threaded.

EP 0 915 262 B1 does not deal with profile connections but with the different technical field of thread inserts. The European patent protects a threaded insert with axial continuous hexagonal drive which are formed in an internal thread of the threaded sleeve. The threaded insert has an external thread in order to be screwed into a receiving bore, in particular a blind bore, and to provide an internal thread therein, namely the internal thread of the threaded sleeve.

Based on the aforementioned prior art, the present invention seeks to provide an improved profile connection, which is on the one hand easy to manufacture, and on the other hand offers the greatest possible variability in the application. Furthermore, the object is to provide a suitable method for producing the profile connection and a correspondingly suitable threaded sleeve available.

This object is achieved in terms of the threaded sleeve with the features of claim 1, with respect to the profile connection with the features of claim 13 and with respect to the method with the features of claim 14. Advantageous developments of the invention are specified in the subclaims. All combinations of at least two features disclosed in the description, the claims and / or the figures fall within the scope of the invention.

In order to avoid repetition, features disclosed according to the device should be regarded as disclosed according to the method and be able to be claimed. Likewise, according to the method disclosed features should be regarded as disclosed according to the device and claimed claim.

The invention is based first of all on the idea of providing a threaded sleeve for producing a profile connection which, in addition to a drive means which can be actuated from both sides and an external thread designed as a self-tapping thread, has an internal thread. shows, with which a connecting screw, which can be screwed fixed to each other in a finished profile connection two profile bars, in particular at impact or at right angles to each other. Furthermore, the invention provides for the thread pitch of the external thread and the thread pitch of the internal thread to be designed differently from one another in order not to be able to clamp the profile rods as previously by twisting the connecting screw, but instead by twisting the threaded sleeve relative to the then preferably fixed connecting screw , wherein for this purpose the connecting screw is screwed not only with the threaded sleeve, but also with a counter-bearing piece in the second professional bar. In this way, with the help of the connecting screw - if necessary - for example, the anodized layer of the groove base of the second profiled bar are damaged and still a mutually bracing the profile bars is still possible because this does not need the connecting screw to be rotated, but the threaded sleeve can be rotated. Due to the different thread pitches of external thread and internal thread of the threaded sleeve, the threaded sleeve is thereby adjusted axially within the first profile of the first profile bar relative to the connecting screw and the second, in particular perpendicular to the first profile bar extending second profile bar, which due to the different thread pitches leads to the connecting screw is further displaced axially into the first profiled groove and the second profiled bar is adjusted due to the coupling with the counter bearing piece, in particular against an end face of the first profiled bar, and is thus clamped.

With regard to the specific configuration of the external thread of the threaded sleeve according to the invention, there are different possibilities. This should be self-tapping according to the invention, that is to say it is such that it has the associated mating thread or internal thread in which preferably formed from a light metal alloy, in particular aluminum alloy formed profile itself by the threaded sleeve is turned down into a first profile of this profile bar profile. For this purpose, the threaded sleeve is preferably made of a harder material, in particular steel, designed as the associated profiled bar. To realize a self-tapping external thread there are different possibilities. Thus, this can be designed as a cutting and self-tapping thread, whereby the thread is preferably equipped with a corresponding cutting edge, which can be realized by the provision of an interruption or recess in the external thread. Alternatively, it is conceivable to design the external thread as exclusively reshaping and thus not machined thread.

Due to the provision of an internal thread within the threaded bushing, headless screws, i. Grub screws are used, since the clamping principle in a trained according to the concept of the invention threaded sleeve, as explained above, is different from known principles, in which a screw head of a connecting screw is supported on the front side on a female threaded threaded sleeve and with a counter bearing, in particular a sliding block , is bolted in the second profile bar.

As mentioned above, the difference in thread pitches between external thread and internal thread of the connecting screw must be chosen so that by turning the threaded sleeve relative to the preferably not circumferentially moving connecting screw this axially further into the threaded sleeve or in this is adjustable to a second profile bar to brace against the first profile bar via an abutment element. It has been particularly preferred issued when the slope difference is at least 0.05, more preferably at least 0.1, even more preferably at least 0.25, even more preferably at least 0.5. Very particularly preferred is an embodiment in which the external thread is designed as a standard thread, in particular metric thread or inch thread and the internal thread as a fine thread.

Also with regard to the orientation of external thread and internal thread of the threaded sleeve relative to each other, there are different possibilities. Particularly preferred is an embodiment in which external thread and internal thread are the same orientation, i. both are designed either as a right-hand thread or as a left-hand thread. In particular, in this case, it is particularly advantageous if, in order to achieve a tension between the first and second profile bar, the external thread has a greater pitch than the internal thread.

In principle, an alternative embodiment is possible in which the external thread and the internal thread are oriented in opposite directions, that is, one of the two threads is designed as a right-hand thread and the other thread as a left-hand thread. In this case, it is advantageous for achieving a bracing effect, when the thread pitch of the external thread is smaller than that of the internal thread. With regard to the specific design of the threaded sleeve, there are different possibilities with individual advantages. Thus, it is particularly preferred if the drive means are formed axially continuous, so that a corresponding tool can be inserted arbitrarily deep into the threaded sleeve in order to rotate it. Alternatively, the drive means have two from each other, in particular via an inner Winding section of the passage opening spaced drive ends, which serve for the respective (alternative) interaction with the tool. With regard to the design of the drive means, there are different possibilities. For example, it is possible to provide the internal thread with a contour deviating from a circular shape, in particular a polygonal contour, very particularly preferably with a hexagonal cross section or a polygonal contour, in particular a torx contour (which only has to be partially realized), the position of the edges ( Corners of the polygonal contour) or the ends of the straight line can end at different radial positions. Likewise, the radially outer inflection points of the multi-round contour can end at different radial positions. For example, it is possible that the edges extending axially or, in the case of multi-round geometries, the points of inflection are arranged on the thread root of the internal thread. Alternatively, it is possible that the edges or points of inflection end radially within the internal thread base with radial distance to the thread root or are arranged with radial clearance outside the thread root. It is also possible to provide at least one, preferably a plurality of circumferentially spaced through the longitudinal extension of the threaded sleeve extending, preferably analogous to a Torxkontur rounded grooves, the groove bottom, in particular the above-mentioned inflection point at the level of the internal thread root or with radial distance inside or outside of the internal thread base could be. As mentioned, the aforementioned contours need not necessarily be axially continuous, which is advantageous, however, but may also extend inwardly from the axial ends and then be axially spaced apart. It is also possible and preferably provided at both axial ends radially continuous, axially outwardly open recesses watch, in particular a plurality of evenly spaced circumferentially recesses, in particular four, whereby the recesses are formed essentially lying between the recesses crenellations and the tool can axially engage in the recesses. Such a design has the advantage, inter alia, that the recesses can be used at the same time for the formation of cutting edges of the threads, in which case it is preferable to dispense with an additional bore for forming the cutting edges, which is not necessary. The aforementioned crenellations preferably carry on their inner circumference the internal thread or an internally threaded portion of the threaded sleeve, wherein the internal thread, as already mentioned, preferably extends axially over the entire length of the sleeve.

It is particularly preferred if more than three radially outwardly and axially open recesses are provided as a drive, and preferably on both axial sides of the threaded sleeve, since the threaded sleeve in total comes into contact with three sections of the profile bar, namely with a Profilnutboden and with two opposite sections of the profile texture intersection. By means of a number of drive recesses exceeding the number of three, a possible resistance-free or jerk-free screwing-in of the threaded sleeve is made possible.

Also with regard to the configuration of the axial ends of the threaded sleeve, there are different possibilities. In principle, it is conceivable that the threaded sleeve has a cylindrical envelope contour extending to the axial end. For ease of finding or introduction into the profile, however, it is advantageous if the ends have centering, whereby it is basically possible to provide the external thread end with a conical envelope contour. It is also possible, especially in the case of a cylindrically tapering thread, to free a thread on the outside Provide cone section or centering, where, for example, a grading of the end portions is possible, especially in an externally threaded section. It has proved to be particularly advantageous if the internal thread and / or the external thread of the threaded sleeve extends / extend axially in one area of the drive means and / or are provided there, in particular to possibly the majority of the axial extent of the threaded sleeve for the corresponding thread to use, with the aim of minimizing the length and the improvement of the threaded connection.

Particularly preferred is a variant of the threaded sleeve, wherein the amount of the angle of the thread contour of the external thread of the threaded sleeve forming thread flanks is the same. In other words, the thread contours are symmetrical in a longitudinal sectional view, preferably in relation to a radial plane, in order to allow trouble-free screwing of the threaded sleeve from both sides. Particularly preferred is an embodiment of the threaded sleeve, wherein in addition to the provision of both axial sides operable drive means, the internal thread extends axially continuously between the axial ends. This means that the drive means and internal thread, at least in sections, are preferably axially continuous at the same axial height, which depending on the configuration of the drive means causes the internal thread in the circumferential direction is interrupted in sections and / or that the internal thread deviates from a circular shape contour having. By providing an axially continuous internal thread even in areas of the drive means the entire length of the threaded sleeve is used for the internal thread, whereby the axial length of the threaded sleeve minimized and / or a particularly strong threaded connection can be guaranteed.

The invention also leads to a profile connection, comprising at least one first profile bar with a extending in the direction of the longitudinal extent of the profile bar, in particular undercut on both sides first profile groove into which a threaded sleeve according to the invention is screwed, which is characterized on the one hand by the fact that they are from both sides can be screwed by means of a corresponding tool in the profile, wherein the threaded sleeve is simultaneously equipped with an internal thread to (if necessary) with the, preferably at least one end having a drive connecting screw in a screwing interaction. In addition, the invention provides that the external thread is a self-tapping thread. As a result, a comfortable, easy insertion of the threaded sleeve is made possible without the need to previously cut into the profile bar an internal thread. In addition, a solid threaded connection between threaded sleeve and profile bar is obtained. If the external thread is formed as a cutting thread, a bending of the profile groove is avoided, as this can occur in a threaded sleeve with forming thread. The formation of the external thread as a pure forming thread is alternatively possible. A substantial functionality which can be achieved by the threaded sleeve according to the invention is to screw the connecting screw, which is preferably designed as a grub screw, both with the internal thread of the threaded sleeve and with the internal thread of a counter-bearing piece received in a second profiled bar, in particular a sliding block or a further internally threaded sleeve then by turning the threaded sleeve, in particular in the circumferential direction fixed, that is not twistable rer connecting bolt to achieve a tension of the two profile bars of the profile connection.

Another significant advantage of the profile connection according to the invention is also that when disassembling the connecting screw can be rotated back into the threaded sleeve, which disturbances or collisions are avoided.

By screwing the connecting screw with the inner thread of the threaded sleeve, it is in particular possible to produce a butt joint between two profiled bars, wherein the profiled bars then abut one another at the front end and the respective profile grooves are aligned in the direction of their longitudinal extent. For example, it is possible to receive in the first profiled groove of the first profiled bar a threaded sleeve according to the invention with external and internal threads and double-sided drive means and to receive an internally threaded counter-bearing piece, in particular a sliding block, in the second profiled groove of the second profiled bar oriented preferably orthogonally to the first profiled bar with which the connecting screw is screwed in addition to the threaded sleeve.

As explained, it is possible due to the great variability of the profile connection or threaded sleeve according to the invention to produce a profile connection with two angled, in particular at right angles to each other pro- struckstben, the second profile bar in its second profile a counter bearing piece, in particular a sliding block with internal thread, with the the connecting screw is screwed. It is very particularly preferred if the connecting screw is screwed through the counter bearing piece against the groove base of the profile groove receiving the counter bearing piece and a profile rod surface which is usually anodized, damaged, for example, with an axially endsei- tigen surface structure or shaping of the connecting screw. After then the connecting screw is set in such a way, preferably the bracing of the profiled bars relative to each other by turning the threaded sleeve relative to the preferably designed as a grub screw connecting screw, in which case an electrically conductive connection between the profiled bars on the connecting screw (through the counter bearing piece through) and the threaded sleeve is ensured, which is screwed with its external thread in each other profiled bar and in turn damaged the surface and thus produces an electrically conductive connection.

In this case, it is provided and preferred that the connecting screw, which is then preferably designed as a grub screw, that is to say a headless connecting screw, be screwed both to the internal thread of the threaded sleeve and to the internal thread of the counterbearing piece. A tensioning of the two profiled bars relative to each other can then be achieved in that the threaded sleeve is rotated relative to the connecting screw by interaction with the drive means, wherein for producing this bracing connection, the external thread and the internal thread of the threaded sleeve have a mutually different pitch Preferably, the pitch of the external thread is greater than the pitch of the internal thread. The invention also leads to a process for producing a profile compound which is preferably formed as above. The method relates to a special (preferred) embodiment of the profile connection, in which the outer and the inner thread of the threaded sleeve have a different thread pitch. The connecting axis of rotation is preferably designed as a grub screw. The method comprises the steps of screwing the threaded sleeve into the first profiled groove of the first profiled bar in such a way that the passage opening of the threaded sleeve extends parallel to the longitudinal extent of the first profiled groove. Another method step is the screwing of the connecting screw with the counter-bearing piece accommodated in a second profiled bar, wherein the counter-bearing piece must of course be arranged on the second profiled bar, in particular in a second profiled groove.

In the case of the formation of the counter-bearing piece as a threaded sleeve for this purpose, the two profile bars are to be arranged in shock. For the preferred case of the formation of the counter-bearing piece as a sliding block, it is preferable to arrange the two profile bars orthogonal, so that the connecting screw extends perpendicular to the longitudinal extent of the second profile groove.

In a further development of the method it is provided that the connecting screw is introduced into the counter bearing piece, in particular this interspersed, that the surface of the second profile bar, in particular the surface of the Profilnutgrundes the second profile groove is damaged and thereby an electrically conductive connection between the connecting screw and the second profiled bar is produced and via the connecting screw into the threaded sleeve in the first profiled groove and over the threaded sleeve with the first profiled bar. As a further method step, it is provided to clamp the first and the second profiled bar by turning the threaded sleeve arranged in the first profiled groove relative to the connecting screw, preferably in a direction away from the second profiled bar. This is preferably done by interaction of a tool with a drive, the threaded sleeve, which points away from the second profiled bar. In the case of the production of an electrically conductive connection between the profiled bars via the connecting screw, which is possible by a distortion of the profiled bars against each other by turning the threaded sleeve, preferably with rotatably held connecting screw, the resulting profile connection of DIN 916 is sufficient.

The invention also applies to the use of a threaded sleeve according to the invention for the production of a preferably formed as described above profile connection, wherein the threaded sleeve has an internal thread and a cutting, self-tapping external thread to form a counter-thread in a profile of a profiled bar, wherein the threaded sleeve by appropriate training and arrangement of the drive means is operable from both sides. The threaded sleeve can be further developed in the context of the disclosure of the entire application by at least one additional feature. The invention also relates to the threaded sleeve, possibly in a corresponding development as such.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings. This show in:

1 shows an exploded view of a possible profile connection,

2 shows an alternative profile connection, in which two profile bars are arranged in abutment,

Fig. 3 shows a further alternative profile connection, in which a

Profile bar is fixed to a metallic plate, 4a to 4c: a possible embodiment of a threaded sleeve for producing a profile connection with two axially spaced drive ends,

5a to 5c: an alternative sleeve embodiment, also with two axially spaced drive ends, wherein here an alternative drive means embodiment is selected, Fig. 6a to 6c: another alternative embodiment of a threaded sleeve for a profile connection with axially continuous drive means, a further alternative embodiment of a Gewin dehülse for a profile connection with provided on both axial sides drive means, a preferred embodiment of a connecting screw for a profile connection,

9a to 9d, a particularly preferred embodiment of a threaded sleeve for a profile connection provided on both axial sides, torx-shaped drive means, and

10a to 10d another alternative, particularly preferred embodiment of a threaded sleeve with axially continuous drive means in the form of a Torx or multi-round contour. In the figures, like elements and elements having the same function are denoted by the same reference numerals. Partial measures are provided in the figures, which are not intended to be limiting. However, arbitrary ratio values from at least two dimensional specifications are to be regarded as disclosed in a preferred embodiment and to be able to be claimed.

In Fig. 1 alternative (of course also used together) profile connections are shown. The profile connection comprises a first profile bar 1 made of a light metal alloy of square cross section, wherein a first undercut profile groove 2 is provided on each side surface. Furthermore, the profile connection comprises a second profile bar 3 of identical design arranged perpendicular to the first profile bar and having four second profile grooves 4 spaced uniformly in the circumferential direction. In a first profile groove 2 of the first profile bar 1, a threaded sleeve 5 can be received. This comprises an external thread 6, an internal thread and drive means 7, which can be actuated from two axial sides. The external thread 6 is designed as a self-tapping thread, by way of example as a cutting cutting thread with corresponding cutting edges, which are formed by providing a radial bore 8. The threaded sleeve 5 in Fig. 1 and a threaded sleeve 9 to be explained later are generic in nature and serve as a black box for threaded sleeves according to the invention, as these are explained for example in Figs. 4a to 7 and 9a to 9d and 10a to 10d. In principle, all threaded bushes covered by the scope of the invention can (alternatively) be used here.

The screwed in the assembled state from one end face into the first profile groove 2 threaded sleeve 5 is penetrated by a cap screw 38, with an end-side drive 1 1 and with an external thread-free Shaft portion 12 and a screw head 13. In the region of the shaft end, the cap screw 38 carries a screw thread 14 for cooperation with a counter bearing internal thread 15 formed as a sliding block abutment piece 16 in the second profile 4 of the second profile bar 3. In the case, which is preferred that the screw thread 14 is also designed to cooperate with the internal thread of the threaded sleeve 9, the cap screw 38 must first be screwed through the internal thread of the threaded sleeve 5, which is advantageous, inter alia, in that the profile connection can be delivered partially pre-assembled, namely with in In the assembled state, the cap screw 38 pulls the counter bearing 15 in the direction of the first profile bar 1 and the screw head 13 is supported on the front side of the threaded sleeve 5 from the first profile groove 2 screwed threaded sleeve.

An alternative form of profile connection designed according to the concept of the invention is likewise shown in FIG. For this purpose, the threaded sleeve 9 is provided in a first profiled groove 2 of the first profiled bar 1. In contrast to the profile connection described above, designed as a grub screw connecting screw 10 is provided, the screw thread 18 is designed to cooperate both with the internal thread of the threaded sleeve 9 and with a Gegenlagerstück- internal thread 19 of a counter-bearing piece 20, in which case the external thread of the threaded sleeve 9 and the internal thread having a different pitch to brace the first and second profile bar 1, 3 against each other, not by turning the drive end designed as a grub screw connecting screw 10 but by actively rotating the threaded sleeve 9, preferably in an axial direction of the second profile bar away, whereby also the connecting screw 10 (preferably without being turned to be) and the second profile bar 3 are adjusted axially along the longitudinal extent of the first profile groove 2.

In Fig. 2, a further alternative profile connection with a first and a second profiled bar 1, 3 is provided, which are arranged in abutment. In the first profiled bar 1 or in the first profiled groove 2 there is a threaded sleeve 5 according to the invention with an internal thread. In the first profile groove 2 axially aligned second profile groove 4 is a female thread-free sleeve 21 which is penetrated by a connecting screw 10, which is bolted to the internal thread of the threaded sleeve 5. It is also possible that the sleeve 21 is formed according to the invention with internal thread and the connecting screw passes through this with a preferably internal thread-free shank portion axially. Alternatively, it is conceivable to use the sleeve 21 also according to the concept of the invention, i. form with internal thread to the profile bars 1, 3 by turning the threaded sleeve 5 can brace against each other.

Fig. 3 shows a further alternative profile connection with a first profil bar 1, comprising a first profile groove 2, in which a threaded sleeve 5 is received with external and internal threads and accessible from both sides drive means. With this threaded sleeve 5, a connecting screw 10 is screwed, which is designed as a cap screw, wherein the screw head 13 is axially supported on a metal plate ausgebil- Deten component 22 having a bore 23 which is penetrated by the connecting screw 10. By means of the connecting screw 10 profile bar 1 and component 22 are braced axially against each other.

FIGS. 4a to 4c show a first exemplary embodiment of a threaded sleeve 5 for forming a profile connection. The threaded sleeve 5 comprises an external thread 6, which may be formed, for example, as a left-hand thread and an axially continuous internal thread 24, which may be formed, for example, as a right-hand thread. The threads may alternatively be formed in the same direction, wherein it is generally preferred to provide different thread pitches, in particular a steeper external thread to, as already explained several times, by twisting the threaded sleeve relative to a connecting screw to achieve a tension. The threaded sleeve 5 has a female thread 24 having through opening 25 for receiving a connecting screw, not shown.

The threaded sleeve 5 is provided with drive means 7 which can be actuated from both axial sides, the drive means in the exemplary embodiment shown having two drive sections or two drive ends 26, 27, wherein in the embodiment shown the drive ends 26, 27 comprise several, here three equally Circumferentially spaced apart, radially extending recesses 28 which extend in the axial and radial directions, and which can be actuated by means of a correspondingly shaped congruent shaped tool for rotating the threaded sleeve 5. The recesses 28 serve at the same time for the formation of thread cutting edges. Preferably, not only as shown three recesses 28 are provided, but four, in order to obtain an optimized cutting result and to have one of the number of female thread sections of the profile groove different number, thereby enabling a simple and smooth insertion. In addition or as an alternative to the formation of thread-cutting edges, preferably four, recesses 29 are provided on the outer circumference of the threaded sleeve 5, in order thereby to interrupt at least one thread groove and correspondingly form ing cutting edges. Alternatively, the external thread can be formed as materialumformendes thread.

FIGS. 5a to 5c show an alternative embodiment of a threaded sleeve 5 with drive means 7 which can likewise be actuated from both sides. In the embodiment shown and in FIG. 5c of the plan view, these comprise a recognizable outer contour 30, the outer contour 30 having Radial distance within the internal thread ends. In other words, the radially outermost regions, in this case longitudinal edges 31 of the outer contour 30, do not extend as far as the inner thread groove base 32, but may alternatively also lie on this or radially outwardly.

In Fig. 5a, an axial end portion or outer region of the threaded sleeve 5 is shown. Evident is an external thread-free end portion 33, which may alternatively be stepped as shown, or alternatively, for example, with an end-side cone portion. It is possible to provide the illustrated end-side centering only on one side or on both sides, in the illustrated or in an alternative embodiment. In FIGS. 6a to 6c, an alternative threaded sleeve 5 for forming a profile connection is shown, the main difference from the preceding embodiments being that the drive means 7 are formed axially continuous. From FIG. 6c, it can be seen that the radially outermost longitudinal edges 31 of the outer contour 30 of the drive means 7 do not extend radially to the inner thread base 32, so that the inner thread has on its inner circumference one, here a polygonal, here hexagonal inner peripheral contour, but that Internal thread in its radially outermost region has a circular cross-sectional contour. In an alternative embodiment, the longitudinal edges 31 of the polygonal contour lie at the radial height of the thread root, wherein It is also conceivable that they are located further outside. Instead of the hexagon contour shown, it is also possible to provide a different contour, for example a square contour. In Fig. 6a it can be seen that the external thread 6 is interrupted with a radially non-continuous recess 29 so as to form cutting edges. Alternatively, of course, a radial passage opening can be realized, which connects the axial passage opening 25 and its inner circumference with the outer circumference.

FIG. 7 shows a particularly preferred embodiment of a threaded sleeve for producing a profile connection, for example shown in an exploded view in FIG. 1. The threaded sleeve 5 has drive means 7, which extend to both, opposite axial ends of the threaded sleeve 5. For this purpose, two axially spaced-apart drive ends 26, 27, each comprising four equally spaced circumferentially recesses 28 are provided, which are open to the respective axial end and formed radially continuous and thus the outer circumference and the inner circumference of the substantially cylindrical threaded sleeve with each other connect. The recesses 28 have a substantially rectangular contour. Between two circumferentially spaced recesses 28 is in each case a part-ring-shaped in plan view pinnacle. The recesses 28 can cooperate by axially inserting a tool with this, in order to apply a torque to the threaded sleeve 5.

Evident is the contour 34 of the external thread 6 of the threaded sleeve 5. The contour 34 is determined or formed by two opposing lying thread flanks 35,36 which are inclined at the same angle to each other. In other words, the thread contour in the longitudinal section intent shown in the left half of the drawing is symmetrical, in order to allow easy insertion of the threaded sleeve into a first profile groove from both sides.

FIG. 7 also shows an inner cone 37 on both axial sides, that is to say an inner phase which makes it easier to find the threaded sleeve by means of the connecting screw 10 shown by way of example in FIG. 8.

Fig. 8 shows a connecting screw 10 for cooperation, for example with a threaded sleeve 5 shown in FIG. 7, the connecting screw 10 has a screw head 13 with drive 1 1, wherein axially to the screw head 13, a thread-free shank portion 12 connects, to which in turn Section with the screw thread 14 connects to cooperate with an internal thread 24 of the threaded sleeve shown for example in Fig. 7. In the embodiment shown, the outer diameter of the shaft portion 12 corresponds to the core diameter of the internal thread passage opening 25 of the threaded sleeve 5 of FIG. 7 minus a minimum clearance. Alternatively and preferably, no or only a short thread-free section is provided, but an external thread, which allows, for example, alternatively designed as a grub screw connecting screw both with the internal thread of the threaded sleeve and with the inner thread of a counter-bearing piece, such as a Nutstein or another Screw internal threaded sleeve.

9a to 9d, a particularly preferred embodiment of a threaded sleeve 5 is provided, which in addition to an external thread 6 has an internal thread 24, wherein the pitches of internal thread 24 and external thread 26 differs, in the embodiment shown in that in co-rotating threads, the external thread has a greater pitch than the internal thread. Again, the external thread is designed as a self-tapping thread, concretely as a cutting-off, cutting thread, wherein alternatively, an embodiment can be realized as exclusively materialumformendes thread.

Especially with the threaded sleeve 5 according to FIGS. 9a to 9d, with which preferably a profile connection with two profile rods can be produced, is the configuration of the drive means 7. These are configured as Torxgeometrie realized only partially, which is not axially continuous, for example, as here is shown in Figs. 9a to 9d, such an embodiment is feasible.

The drive means 7 have a multi-round contour, of several, here specifically six, uniformly distributed in the circumferential direction arranged roundings 39, which may end depending on the configuration at different radial positions of the screw. Thus, the radially outermost regions, i. the turning points 40 of the curves on the bottom of the internal thread 24 end or protrude radially outward beyond or end radially inwardly at a distance from the bottom of the internal thread.

An alternative embodiment of a particularly preferred variant of a threaded sleeve is shown in FIGS. 10a to 10d. This embodiment corresponds to the embodiment of FIGS. 9a to 9d, with the only difference that the drive means are formed axially continuous and not as in the embodiment of FIGS. 9a to 9d, two drive portions are spaced from each other via an internally threaded portion. reference numeral

1 first profile bar

 2 first profile groove

 3 second profile bar

 4 second profile groove

 5 threaded sleeve

 6 external threads

 7 drive means

 8 radial bore

 9 threaded sleeve

 10 connecting screw

 1 1 drive

 12 shaft section

 13 screw head

 14 screw thread

 15 counter bearing internal thread

16 counter bearing piece

 18 screw thread

 19 counter bearing internal thread

20 counter bearing piece

 21 sleeve

 22 component

 23 hole

 24 internal thread

 25 passage opening

 26 drive end

 27 drive end

28 recesses 29 wells

 30 outer contour

 31 longitudinal edges

 32 female thread groove bottom 33 end portion

 34 contour

 35 thread flank

 36 thread flank

 37 inner cone

38 head screw

 39 curves

 40 turning point

Claims

claims Threaded sleeve for producing a Provilverbindung, with a self-tapping, especially exclusively materialumformendes or cutting and self-tapping thread, formed external thread (6), a through hole with internal thread (24) for receiving a screw thread having a connecting screw (10) and with drive means (7), which extend to both axial ends of the threaded sleeve (5, 9) facing away from each other, characterized in that a thread pitch of the external thread (6) and a thread pitch of the internal thread (24) are different from each other. Threaded sleeve according to claim 1,  characterized,  that the external thread (6) and the internal thread (24) are formed as right-hand thread or left-hand thread. Threaded sleeve according to one of claims 1 or 2,  characterized, in that the thread pitch of the external thread (6), which is preferably designed as a standard thread, is in particular greater than or equal to at least 0.05, more preferably at least 0.1, even more preferably at least 0.25, even more preferably at least 0.5 Thread pitch of, preferably designed as a fine thread, internal thread (24). Threaded sleeve according to claim 1, characterized, the external thread (6) is designed as a right-hand thread and the internal thread (24) as a left-hand thread, or vice versa. Threaded sleeve according to claim 4, characterized, the thread pitch of the external thread (6), in particular by at least 0.05, more preferably at least 0.1, even more preferably at least 0.25, even more preferably at least 0.5, is smaller than the thread pitch of the internal thread (24). Threaded sleeve according to one of the preceding claims, characterized in that the internal thread (24) extends axially continuously between the axial ends of the threaded sleeve. Threaded sleeve according to one of the preceding claims, characterized that the drive means (7), in particular a polygonal contour or a multi-round contour, preferably a Torxkontur, the drive means (7), radially beyond a Innengewinderillengrund (32) of the internal thread (24) of the threaded sleeve (5, 9) extend out or radial on the inner thread groove base (32) or ends radially at a distance in front of the inner thread groove base (32). Threaded sleeve according to one of the preceding claims, characterized in that the drive means (7) are formed axially continuous or have two drive ends (26, 27) spaced apart from one another, in particular via an internally threaded portion. Threaded sleeve according to claim 8, characterized, in that the drive ends (26, 27) each have at least one, preferably a plurality of uniformly circumferentially spaced, axially extending and radially passing recess (s), wherein the internal thread (24) is preferably provided in the circumferential direction between the recesses. Threaded sleeve according to claim 9, characterized, the at least one cutout (28) is delimited by a thread cutting edge of the external thread (6) of the threaded sleeve (5, 9). Threaded sleeve according to one of the preceding claims, characterized the threaded sleeve (5, 9) has at least one end-side, in particular external thread-free, cone section or an end-side, preferably thread-free step section. Threaded sleeve according to one of the preceding claims, characterized the flank angle amount of the thread flanks of the threaded sleeve (5, 9) forming the thread contour of the external thread (6) is the same. Profile connection comprising a first profiled bar (1) with at least one undercut first profiled groove (2) extending in the direction of the longitudinal extent of the first profiled bar (1) and a threaded sleeve (5) screwed into the first profiled groove (2) with its external thread (7) , 9) according to any one of the preceding claims, wherein in the threaded sleeve (5, 9) a screw thread (18) having a connecting screw (17) is received and screwed to the internal thread (7), and wherein in addition to the first profile bar (1). a second profiled bar (3) is provided with at least one undercut second profiled groove (4) extending in the direction of the longitudinal extent of the second profiled bar (3), wherein preferably the first and the second profiled bar (1, 3) are oriented at an angle to one another, in particular perpendicular to one another are, and wherein in the second profile groove (4) has an internal thread-bearing counter-bearing piece (16) is added to the Verbindun gsschraube (10) is screwed and wherein the second profiled bar (3) against the first profile bar (1), in particular by rotation of the threaded sleeve, is braced. Profile connection according to claim 13, characterized, that the, preferably designed as a grub screw, connecting screw, in particular the end face, on the groove bottom of the second profile groove (4) of the second profile bar (3) is supported, in particular so that an electrically conductive connection between the connecting screw and the second profile bar (3) results. Method for producing a profile connection according to one of Claims 13 or 14, using a threaded sleeve according to one of Claims 1 to 12, characterized by the steps: • Screwing the threaded sleeve (5, 9) in the first profile of the first profile bar (1);  • Screwing the preferred connecting screw with the internal thread (24) of the threaded sleeve and with a second profiled bar (3) accommodated counter bearing piece (16), in particular such that the connecting screw, preferably with its front side, the surface, in particular a second Profilnutgrundes, the second profile bar (3) damaged to produce an electrically conductive connection;  • Clamping the first and second profile bar (1, 3) by turning the threaded sleeve relative to the, preferred fixed, connecting screw. Use of a threaded sleeve (5, 9) according to one of claims 1 to 12 for producing a profile connection, in particular according to one of claims 13 or 14.