DE102020006613A1 - Method for producing a connection between a press-in element and a plastically deformable through-opening in a wall of a hollow profile - Google Patents

Abstract

The invention relates to a method for producing a positive and/or frictional connection between a press-in element (5) and a plastically deformable through-opening (3) in a wall (4) of a hollow profile (1) by pressing the press-in element (5) into the through-opening ( 3), wherein the through-hole (3) deforms around the press-in member (5) when the press-in member (5) is press-fitted into the through-hole (3) in the press-in direction.

Description

The invention relates to a method for producing a positive and/or frictional connection between a self-clamping or self-piercing press-in element and a plastically deformable through-opening in a wall of a hollow profile by pressing the press-in element into the through-opening, according to the preambles of claims 1, 7 and 13.

Such procedures are over DE 10 2009 014 206 A1 famous. In the embodiment of 4 the DE 10 2009 014 206 A1 a hole is made in a casing wall of the hollow profile and a self-piercing nut with an internal thread and a cutting edge is introduced through the hole into the interior of the hollow profile. A compressive force is then exerted on the self-piercing nut by means of a punch passed through the hole, so that the cutting edge cuts through a surface of the jacket wall opposite the hole and creates a further opening there. This will hold the self-piercing nut in the wider opening.

The disadvantage of the method, however, is that a hole has to be made, which requires a certain amount of manufacturing effort, weakens the cross section of the hollow profile and represents an optical impairment of the hollow profile. Furthermore, such a hole, which is only provided for connecting the self-piercing nut to the hollow profile, is also disadvantageous if the interior of the hollow profile has to have a certain degree of tightness with respect to the environment.

In contrast, the present invention is based on the object of further developing a generic method in such a way that the disadvantages described above are avoided.

This object is achieved according to the invention by the features of claims 1, 7 and 13.

Disclosure of Invention

According to a first aspect of the invention, a method is proposed for producing a positive and/or frictional connection between a self-clamping or self-piercing press-in element and a plastically deformable through-opening in a wall of a hollow profile by pressing the press-in element into the through-opening in a press-in direction, with the through-opening deformed around the press-in member when the press-in member is press-fitted into the through-hole in the press-in direction.

1. a) Fertigen der Durchgangsöffnung in der Wandung,
2. b) Positionieren des Einpresselements auf einer ersten Seite der Wandung, welche zu einem Inneren des Hohlprofils weist, koaxial zur Durchgangsöffnung,
3. c) Hindurchführen wenigstens eines ersten Endes eines Zugelements durch die Durchgangsöffnung hindurch von einer von der ersten Seite abgewandten zweiten Seite der Wandung her, welche von dem Inneren des Hohlprofils weg weist,
4. d) Verbinden des ersten Endes des Zugelements mit dem Einpresselement derart, dass ein zweites Ende des Zugelements noch aus der Durchgangsöffnung herausragt, in Richtung einer zweiten Seite der Wandung, welche von dem Inneren des Hohlprofils weg weist,
5. e) Ausüben einer Zugkraft auf das zweite Ende des Zugelements derart, dass die Zugkraft von dem Zugelement auf das Einpresselement übertragen wird und das Einpresselement dadurch in die Durchgangsöffnung unter Verformung der Durchgangsöffnung in der Einpressrichtung eingepresst wird, um die formschlüssige und/oder reibschlüssige Verbindung zwischen dem Einpresselement und der Durchgangsöffnung herzustellen,

According to the first aspect, the invention is characterized by at least the following steps:

1. a) making the through hole in the wall,
2. b) positioning of the press-in element on a first side of the wall, which faces towards an interior of the hollow profile, coaxially to the through-opening,
3. c) passing at least a first end of a tension element through the through-opening from a second side of the wall which faces away from the first side and points away from the interior of the hollow profile,
4. d) connecting the first end of the tension element to the press-in element in such a way that a second end of the tension element still projects out of the through-opening in the direction of a second side of the wall, which points away from the interior of the hollow profile,
5. e) Exercising a tensile force on the second end of the tension element in such a way that the tensile force is transferred from the tension element to the press-in element and the press-in element is thereby pressed into the through-opening with deformation of the through-opening in the press-in direction in order to form the positive and/or frictional connection between to produce the press-in element and the through-opening,

The press-in element can be any press-in element that can be pressed into the through-opening by a force and consequently causes a deformation of the through-opening or of its opening edge, so that a positive connection and/or frictional connection caused thereby creates a particularly self-locking connection between the wall and the press-in element. The press-in element can be formed, for example, by a self-piercing or self-locking fastener, by a self-piercing or self-locking nut or by a self-piercing or self-locking screw.

In particular, the press-in element has at least one punched or connecting section, with which the press-in element is punched or pressed into the through-opening.

Seen in particular in cross-section closed hollow profile can in particular a metal such as aluminum or magnesium or an alloy containing these metals and in particular be a hollow profile produced by extrusion, hydroforming, roll forming, primary shaping such as casting or by stamping.

The hollow profile can also be open on one or both sides with respect to a longitudinal axis of the hollow profile extending perpendicularly to the cross section of the hollow profile and therefore have at least one front opening so that elements or tools can be introduced into the interior of the hollow profile.

For example, in the first aspect, the press-in element is introduced into the interior of the hollow profile and the press-in element is positioned on the first side of the wall through such a front-side opening of the hollow profile.

The method according to the invention entails that different from that mentioned at the outset DE 10 2009 014 206 A1 no additional hole has to be made in the jacket wall of the hollow profile in order to create access for a press-in tool such as a stamp. This has advantages with regard to the rigidity, tightness and visual appearance of the jacket wall. Rather, the press-in force is applied to the press-in element via a single through-opening, which arises anyway as a result of the press-in process.

A connection produced with the method according to the invention can also be recognized on a hollow profile by the fact that there is no further through-opening formed on a diametrically opposite section of the wall coaxially with the through-opening.

In this respect, the invention also includes a hollow profile in which a form-fitting and/or frictional connection between a self-clamping or self-piercing press-in element and a plastically deformable through-opening in a wall of the hollow profile has been produced according to the method according to the invention, and in which no a diametrically opposite section of the wall of the hollow profile formed further through-opening is present.

Advantageous developments of the first aspect of the invention are specified in subclaims.

Finally, in the method, for example, the first end of the pulling element is separated from the press-in element and the pulling element is pulled back out of the through-opening.

An external thread can also be formed on the first end of the pulling element, which is screwed to an internal thread formed on the press-in element.

In particular, the press-in element can be formed by a press-in nut and the internal thread can be formed by the nut thread of a nut opening.

Alternatively, the press-in element can have a central opening and the first end of the tension element can be connected to the press-in element by bringing the first end of the tension element into a position in which it protrudes from the central opening into the interior of the hollow profile, wherein At least one counter element is provided at the first end of the tension element, which extends transversely to the press-in direction and is countered on a side of the press-in element pointing away from the wall.

The counter element can in particular also be hook-shaped and can be countered or act on the side of the press-in element pointing away from the wall.

For the realization, at least one recess extending transversely to the press-in direction can be formed on the first end of the tension element, through which the counter element is guided. The counter element, which is then arranged transversely to the press-in direction, then counters the tension element when the tensile force is applied to the press-in element, as a result of which the tensile force is transmitted to the press-in element.

According to a second aspect of the invention, a method is proposed for producing a positive and/or frictional connection between a self-clamping or self-piercing press-in element having an opening and a plastically deformable through-opening in a wall of a hollow profile by pressing the press-in element into the through-opening in a press-in direction, wherein the through-hole deforms around the press-in member when the press-in member is press-fitted into the through-hole in the press-in direction.

1. a) Fertigen der Durchgangsöffnung in der Wandung,
2. b) Positionieren des Einpresselements auf einer ersten Seite der Wandung, welche zu einem Inneren des Hohlprofils weist, koaxial zur Durchgangsöffnung,
3. c) Positionieren eines Druckelements auf, an oder in dem Einpresselement im Inneren des Hohlprofils derart, dass das Druckelement eine Druckkraft auf das Einpresselement in Einpressrichtung ausüben kann,
4. d) Hindurchführen eines ersten Endes eines Zugelements durch die Durchgangsöffnung und die Öffnung hindurch von einer von der ersten Seite abgewandten zweiten Seite der Wandung her, welche von dem Inneren des Hohlprofils weg weist,
5. e) Verbinden des ersten Endes des Zugelements mit dem Druckelement derart, dass ein zweites Ende des Zugelements noch aus der Durchgangsöffnung herausragt, in Richtung einer zweiten Seite der Wandung, welche von dem Inneren des Hohlprofils weg weist,
6. f) Ausüben einer Zugkraft auf das zweite Ende des Zugelements derart, dass die Zugkraft von dem Zugelement auf das Druckelement und von dem Druckelement als Druckkraft auf das Einpresselement übertragen und das Einpresselement dadurch in die Durchgangsöffnung unter Verformung der Durchgangsöffnung in Einpressrichtung eingepresst wird, um die formschlüssige und/oder reibschlüssige Verbindung zwischen dem Einpresselement und der Durchgangsöffnung herzustellen.

According to the second aspect, the invention is characterized by at least the following steps:

1. a) making the through hole in the wall,
2. b) Positioning of the press-in element on a first side of the wall, which to a Interior of the hollow profile has, coaxially to the through-opening,
3. c) Positioning a pressure element on, on or in the press-in element inside the hollow profile in such a way that the pressure element can exert a pressure force on the press-in element in the press-in direction,
4. d) passing a first end of a tension element through the through-opening and through the opening from a second side of the wall which faces away from the first side and points away from the interior of the hollow profile,
5. e) connecting the first end of the tension element to the pressure element in such a way that a second end of the tension element still projects out of the through-opening in the direction of a second side of the wall, which points away from the interior of the hollow profile,
6. f) Exercising a tensile force on the second end of the tension element in such a way that the tensile force is transmitted from the tension element to the pressure element and from the pressure element as a pressure force to the press-in element and the press-in element is thereby pressed into the through-opening with deformation of the through-opening in the press-in direction in order to produce a positive and/or frictional connection between the press-in element and the through-opening.

The advantages resulting from the first aspect correspond to the advantages mentioned above for the first aspect of the invention.

In addition, the second aspect offers the advantage that the press-in element is in particular out of contact with the tension element and is therefore not directly loaded by it. For example, for this purpose an outside diameter of the pulling element is smaller than the inside diameter of the opening of the press-in element, through which the first end of the pulling element is guided.

In particular, the press-in element is a press-in nut. The pressure element can also be a nut, which then represents a pressure nut in which a nut thread is then formed, into which the first end of the tension element is screwed, which then has a complementary external thread.

The pressure element is also preferably positioned coaxially on, on or in the press-in element.

In particular, the press-in element has at least one punched or connecting section, with which the press-in element is punched or pressed into the through-opening.

As already explained above, the hollow profile can be open on one or both sides with respect to a longitudinal axis of the hollow profile extending perpendicularly to the cross section of the hollow profile and can therefore have at least one front opening so that elements that are necessary for carrying out the method can get into the interior of the Hollow profile can be introduced.

For example, in the second aspect, the press-in element and the pressure element are introduced into the interior of the hollow profile and the press-in element is positioned on the first side of the wall and the pressure element on, in or on the press-in element through such a front opening of the hollow profile.

Advantageous developments of the second aspect of the invention are specified in dependent claims.

Finally, in the method, for example, the first end of the tension element is separated from the pressure element and the tension element is pulled back out of the opening and out of the through-opening.

An external thread can also be formed on the first end of the pulling element, which is screwed to an internal thread formed on the pressure element. This internal thread is preferably formed in the opening. The pressure element is preferably formed by a pressure nut.

The pressure element can also have a central opening, in particular, and the first end of the tension element can be connected to the pressure element by bringing the first end of the tension element into a position in which it protrudes from the central opening into the interior of the hollow profile. at least one counter element which extends transversely to the press-in direction and is countered on a side of the pressure element pointing away from the wall is provided at the first end of the tension element.

In this case, at least one recess which extends transversely to the press-in direction and through which the counter element is guided can be formed on the first end of the pulling element.

With regard to the advantageous effects of this embodiment, reference is made to the corresponding description of the first aspect of the invention.

According to a third aspect of the invention, a method is proposed for producing a positive and/or frictional connection between a self-clamping or self-piercing press-in element having an opening and a plastically deformable through-opening in a wall of a hollow profile by pressing the press-in element into the through-opening in a press-in direction, wherein the through-hole deforms around the press-in member when the press-in member is press-fitted into the through-hole in the press-in direction.

1. a) Fertigen der Durchgangsöffnung in der Wandung,
2. b) Positionieren des Einpresselements auf einer ersten Seite der Wandung, welche zu einem Inneren des Hohlprofils weist, koaxial zur Durchgangsöffnung,
3. c) Positionieren einer Zugschraube an, auf oder in dem Einpresselement im Inneren des Hohlprofils derart, dass ein Schraubenkopf der Zugschraube an der Einpress-Mutter gekontert wird und ein Schraubenschaft der Zugschraube durch die Öffnung hindurchragt und mit einem Schraubenschaftende aus der Durchgangsöffnung herausragt, in Richtung einer zweiten Seite der Wandung, welche von dem Inneren des Hohlprofils weg weist,
4. d) Ausüben einer Zugkraft auf das Schraubenschaftende in Einpressrichtung derart, dass die Zugkraft von der Zugschraube als Druckkraft auf das Einpresselement übertragen und das Einpresselement durch die Druckkraft in die Durchgangsöffnung unter Verformung der Durchgangsöffnung in Einpressrichtung eingepresst wird, um die formschlüssige und/oder reibschlüssige Verbindung zwischen dem Einpresselement und der Durchgangsöffnung herzustellen.

According to the third aspect, the invention is characterized by at least the following steps:

1. a) making the through hole in the wall,
2. b) positioning of the press-in element on a first side of the wall, which faces towards an interior of the hollow profile, coaxially to the through-opening,
3. c) Positioning a tension screw on, on or in the press-in element inside the hollow profile in such a way that a screw head of the tension screw is countered on the press-in nut and a screw shank of the tension screw protrudes through the opening and protrudes with a screw shank end out of the through-opening in the direction a second side of the wall, which points away from the interior of the hollow profile,
4. d) Exerting a tensile force on the end of the screw shank in the press-in direction in such a way that the tensile force is transmitted from the tension screw as a compressive force to the press-in element and the press-in element is pressed into the through-opening by the compressive force, with deformation of the through-opening in the press-in direction in order to create the positive and/or frictional connection to produce between the press-in element and the through-opening.

The advantages resulting from the first aspect correspond to the advantages mentioned above for the first aspect of the invention.

In particular, the press-in element has at least one punching or connecting section, with which or through which the press-in element is punched or pressed into the through-opening.

As already explained above, the hollow profile can be open on one or both sides with respect to a longitudinal axis of the hollow profile extending perpendicularly to the cross section of the hollow profile and can therefore have at least one front opening so that elements that are necessary for carrying out the method can get into the interior of the Hollow profile can be introduced.

For example, in the second aspect, the press-in element and the tension screw are introduced into the interior of the hollow profile and the press-in element is positioned or arranged on the first side of the wall and the tension screw on, in or on the press-in element through such a front opening of the hollow profile.

At the end, for example, the tension screw is removed from the opening and from the through-opening.

character list

• 1A-1F perspektivische Schnittdarstellungen eines Hohlprofils, in welchen jeweils ein Schritt zum Herstellen einer Verbindung gemäß einer bevorzugten Ausführungsform des ersten Aspekts der Erfindung dargestellt ist,
• 2A-2F perspektivische Schnittdarstellungen eines Hohlprofils, in welchen jeweils ein Schritt zum Herstellen einer Verbindung gemäß einer bevorzugten Ausführungsform des zweiten Aspekts der Erfindung dargestellt ist;
• 3 eine perspektivische Schnittdarstellung einer mit einer Einpress-Mutter zusammenwirkenden Zugschraube zur Veranschaulichung einer bevorzugten Ausführungsform des Verfahrens gemäß einem dritten Aspekt der Erfindung;
• 4 Querschnittsdarstellungen von verschiedenen Ausführungen von Zugelementen wie sie bei dem ersten und zweiten Aspekt des Verfahrens gemäß der Erfindung zum Einsatz kommen können.

Exemplary embodiments of the invention are shown in the drawing and explained in more detail in the following description. In the drawing shows

• 1A-1F perspective sectional views of a hollow profile, in each of which a step for producing a connection according to a preferred embodiment of the first aspect of the invention is shown,
• 2A-2F perspective sectional views of a hollow profile, in each of which a step for producing a connection according to a preferred embodiment of the second aspect of the invention is shown;
• 3 a perspective sectional view of a pull screw interacting with a press-in nut to illustrate a preferred embodiment of the method according to a third aspect of the invention;
• 4 Cross-sectional representations of different designs of pulling elements as can be used in the first and second aspects of the method according to the invention.

Description of the exemplary embodiments

1A - 1F show perspective sectional views of a hollow profile 1, in each of which a step for producing a connection according to a preferred embodiment of a first aspect of the invention is shown.

It is assumed that the hollow profile 1 is closed and viewed in cross section here, for example, two end openings 2 has. The hollow profile 1 can have any cross section, for example, as shown here, a square cross section. However, any cross section is also conceivable, such as a polygonal, round or elliptical cross section.

In a first step, which 1A is shown, a through-opening 3 is made in a wall 4 of the hollow profile 1, for example by machining such as drilling. The production of the through opening 3 can also already take place together with the production of the hollow profile 1, for example in a primary shaping in one work step. The wall 4 of the hollow profile 1 is preferably thin-walled.

Subsequently, a press-in element 5, here for example a press-in nut with an internal thread 7 formed in a nut opening 6, is positioned on a first side 8 of the wall 4, which faces an interior 9 of the hollow profile 1, in particular coaxially with the through-opening 3, as in 1B is shown. The press-in element 5 then contacts the first side 8 of the wall 4, for example.

The press-in element 5 preferably has a punched or connecting section 10 which, for example, has a slightly larger outer diameter than an inner diameter of the through-opening 3, so that when the press-in element 5 is in the in 1C is pressed into the through-opening 3 in the press-in direction symbolized by an arrow, the edge of the through-opening 3 plastically expands and deforms and then a type of press fit between the stamped or connecting section 10 and the through-opening 3 is created. If the punched or connecting section 10 also has an undercut, part of the edge of the through-opening 3 can deform elastically and engage behind the undercut when viewed in cross section, so that in addition to a frictional connection, there is also a form-fitting connection between the press-in element 5 and the through-opening 3 or the wall 4 of the hollow profile 1 is formed. In contrast, the press-in element 5 , which is stiffer in particular in relation to the wall 4 , is preferably not deformed when it is pressed into the through-opening 3 .

At the same time, before or after, a first end 12 of a tension element 13 is passed through the through-opening 3 , namely from a second side 14 of the wall, facing away from the first side 8 and pointing away from the interior 9 of the hollow profile 1 . This situation is in 1C shown. The tension element 13 is here, for example, a tension rod provided with an external thread 15 , the external thread 15 being formed in particular in the region of the first end 12 and a second end 16 of the tension element 13 . Then the first end 12 of the tension element 13 provided with the external thread 15 is connected to the internal thread 7 of the press-in element here preferably by screwing, for example by rotating the tension element 13 about its axis. The tension element is dimensioned in such a way that the second end can still protrude from the through-opening 3 , namely in the direction of the second side 14 of the wall 4 , which points away from the interior 9 of the hollow profile 1 .

in a 1D In the step shown, a tensile force is then exerted on the second end 16 of the tension element 13 in such a way that the tension force is transmitted from the tension element 13 to the press-in element 5 and the latter or its punched or connecting section thereby penetrates the through-opening 3, deforming the through-opening 3 in is pressed in the press-in direction in order to produce the positive and/or frictional connection between the press-in element 5 and the through-opening 3 . For this purpose, for example, the second end 16 of the pulling element 13 is connected to a lifting device, not shown here, and screwed here in particular, which then generates the pulling force. The lifting device can be operated mechanically, electrically, pneumatically and/or hydraulically. By centrally pressing press-in element 5 coaxially into through-opening 3, a defined position of press-in element 5 can be created, for example by forming a step at a transition from punched or connecting section 10 to a body section 17 of press-in element 5, which step is formed, for example, by a jump in diameter is realized, which then contacts the edge of the through-opening 3 on the first side 8 of the wall 4, as in 1D is shown.

After the press-in element 5 has been pressed into the through-opening 3, a 1E In the step shown, the pull element 13 is separated from the press-in element 5, here for example by the pull element 13 being unscrewed from the press-in element 5, as illustrated by the arrow, and the lifting device removed, so that the through-opening 3 of the wall 4 of the hollow profile 1 then Press-in element 5 remains in a defined position, such as 1F indicates. The defined position of the press-in element inside the hollow profile is then permanently secured by the positive/frictional engagement of the press-in element 5 in the through-opening 3 chert Since the connection is only created by the work step of pressing the press-in element into the through-opening 3, one can speak of a self-locking connection.

2A - 2F show perspective sectional views of a hollow profile 1, in each of which a step for producing a connection according to a preferred embodiment of a second aspect of the invention is shown.

In a first step, which 2A is shown, as in the method of the first aspect, a through-opening 3 is made in the wall 4 of the hollow profile 1, for example also by machining such as drilling. However, the production of the through-opening 3 can also take place here during the production of the hollow profile 1, for example in a primary shaping of the hollow profile 1 in a single work step.

Subsequently, as a press-in element, a press-in nut with an internal thread 7 formed in an opening 6 is again positioned on the first side 8 of the wall 4, which faces towards the interior 9 of the hollow profile 1, again coaxially with the through-opening 3, as in FIG 2 B is shown. The press-in element 5 then in turn contacts the edge of the through-opening 3 from the first side 8 of the wall 4 . The positioning of the press-in element 5 in the interior 9 of the hollow profile 1 and on the through hole 3 can, for example, in turn be effected via one of the two front-side openings 2 of the hollow profile 1 .

In contrast to the first aspect, a pressure element 18 is also positioned on the press-in element 5 inside 9 of the hollow profile 1 in such a way that the pressure element 18 can exert a pressure force on the press-in element 5 in the press-in direction. The pressure element 18 is formed here, for example, by a pressure nut with a pressure element opening 19 with an internal thread 20, which is positioned coaxially on the press-in element 15 and contacts the press-in element 5 on its surface facing away from the first side 8 of the wall 4. This situation is in 2 B shown. The inner diameter of the opening 6 of the press-in element 5 is preferably larger than the inner diameter of the pressure element opening 19.

Then the first end 12 of the tension element 13 is passed through the through-opening 3 and the opening 6 of the press-in element, again from the second side 14 of the wall 4 facing away from the first side 8, which is away from the interior 9 of the hollow profile 1 points. The first end 12 of the pulling element 13 is in turn provided with an external thread 15, which can be screwed to the internal thread of the pressure element 18, but not to the internal thread 7 of the press-in element 5, which has a larger internal diameter in comparison, so that the first end 12 of the Tension element 13 can be pushed unhindered through the opening 6 of the press-in element 5 and screwed to the internal thread 20 of the pressure element 18 complementary thereto, such as 2C indicates. As already described for the first aspect, when the tension element 13 is screwed into the pressure element 18, the second end 16 of the tension element 13 still points out of the through opening 3, namely in the direction of the second side 14 of the wall 4, which extends from the interior 9 of the hollow profile 1 points away.

Then the lifting device exerts a pulling force on the second end 16 of the pulling element 13 in such a way that the pulling force is transmitted from the pulling element 13 to the pressure element 18 and from the pressure element 18 as a pressure force to the press-in element and the press-in element thereby deforms into the through-opening 3 of the through-opening 3 is pressed in in the press-in direction, as in 2D is shown.

According to 2E the tension element 13 is then unscrewed from the pressure element and the pressure element 18 , which is only provided for production purposes, is removed from the interior 9 of the hollow profile 1 . 2F then shows the completed form-fitting and/or friction-fitting connection between the press-in element 5 and the through-opening 3.

In 4 a number of designs of tension elements 13 are shown, as they can be used in the first aspect and the second aspect of the method according to the invention as an alternative to screwing the tension element 13 to the press-in element 5 or to the pressure element 18 .

In this embodiment, too, the press-in element 5 has a central opening 6, which is the case, for example, with a press-in nut as the press-in element. At least one recess 21 extending transversely to the press-in direction is then formed on the first end 12 of the tension element 13, through which a counter element 22 is guided. In the outer right picture of 4 Such a recess 21, here for example square in cross section, and a counter element 22 of such complementary design are shown that the counter element 22 can be inserted into the recess 21 and then protruding laterally from the recess 21, forming a stop which then strikes the press-in element 5 when a tensile force is exerted on the tensile element 13 . Due to this stop of the counter element 22 on the press-in nut or on the press-in element 5 , the tensile force exerted on the tension element 13 is then transmitted as a compressive force on the press-in nut or on the press-in element 5 . Instead of through a closed cross-section as in 4 on the right, the at least one recess 21 can also have an open cross section, such as the second embodiment from the right in 4 illustrated.

In 3 1 is a perspective sectional view of a tension screw 23 interacting with a press-in element 5, preferably designed as a press-in nut, to illustrate a preferred embodiment of the method according to a third aspect of the invention.

The through-opening 3 in the wall 4 of the hollow profile 1 is again produced in the process. Then, as the press-in element 5, a press-in nut is again preferably positioned on the first side 8 of the wall 4, which points toward the interior 9 of the hollow profile 1, coaxially with the through-opening 3.

Then the tension screw 23 is positioned on the press-in element 5 inside 9 of the hollow profile 1 in such a way that a screw head 24 of the tension screw 23 is countered on the press-in element 5 and a screw shank 25 of the tension screw 23 protrudes through the opening 6 of the press-in element 5 and with a screw shank end protrudes from the through opening 3 of the wall 4 of the hollow profile 1, in the direction of the second side 14 of the wall 4, which points away from the interior 9 of the hollow profile 1, as shown in FIG 3 is easy to imagine.

Then, a tensile force is applied to the screw shank end in the press-in direction such that the tensile force from the tension screw 23 is transmitted as a compressive force to the press-in member, and the press-in member 5 is pressed into the through-hole 3 by the compressive force, deforming the through-hole 3 in the press-in direction. This in turn creates a positive and/or frictional connection between the press-in element 5 and the through-opening 3 .

Reference List

1

hollow profile

2

front openings

3

passage opening

4

wall

5

press-in element

6

opening

7

inner thread

8th

first page

9

interior

10

Stamping or connecting section

12

first end

13

tension element

14

second page

15

external thread

16

second end

17

body section

18

pressure element

19

pressure element opening

20

inner thread

21

recess

22

counter element

23

lag screw

24

screw head

25

screw shank

QUOTES INCLUDED IN DESCRIPTION

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Patent Literature Cited

• DE 102009014206 A1 [0002, 0013]

Claims (14)

Method for producing a positive and/or frictional connection between a self-clamping or self-piercing press-in element (5) and a plastically deformable through-opening (3) in a wall (4) of a hollow profile (1) by pressing the press-in element (5) into the through-opening (3 ) in a press-in direction, the through-opening (3) being deformed around the press-in element (5) when the press-in element (5) is pressed into the through-opening (3) in the press-in direction, characterized by at least the following steps: a) manufacturing the through-opening (3) in the wall (4), b) positioning the press-in element (3) on a first side (8) of the wall (4), which faces an interior (9) of the hollow profile (1), coaxially with the through-opening ( 3), c) passing at least a first end (12) of a tension element (13) through the through-opening (3) from a second side facing away from the first side (8). (14) of the wall (4), which points away from the interior (9) of the hollow profile (1), d) connecting the first end (12) of the tension element (13) to the press-in element (5) in such a way that a second End (16) of the tension element (13) still protrudes from the through-opening (3) in the direction of the second side (14) of the wall (4), which points away from the interior (9) of the hollow profile (1), e) exercising a tensile force on the second end (16) of the pulling element (13) in such a way that the pulling force is transmitted from the pulling element (13) to the press-in element (5) and the press-in element (5) thereby into the through-opening (3) with deformation of the through-opening (3) is pressed in the press-in direction in order to produce the positive and/or frictional connection between the press-in element (5) and the through-opening (3). procedure after claim 1 , characterized by separating the first end (12) of the pulling element (13) from the press-in element (5) and withdrawing the pulling element (13) from the through opening (3). procedure after claim 1 or 2 , characterized in that at the first end (12) of the pulling element (13) an external thread (15) is formed, which is screwed to an internal thread (7) formed on the press-in element (5). procedure after claim 3 , characterized in that the press-in element (5) is formed by a press-in nut and that the internal thread (7) is formed by the nut thread. procedure after claim 1 or 2 , characterized in that the press-in element (5) has a central opening (6) and the connection of the first end (12) of the tension element (13) to the press-in element (5) takes place in that the first end (12) of the tension element ( 13) is brought into a position in which it protrudes from the central opening (6) into the interior (9) of the hollow profile (1), with at least one transverse to the first end (12) of the tension element (13). Press-in direction extending counter element (22) is provided, which on one of the wall (4) pointing away side of the press-in element (5) is countered. procedure after claim 5 , characterized in that at least one recess (21) is formed on the first end (12) of the tension element (13) and extends transversely to the pressing-in direction, through which the counter element (22) is guided in such a way that it emerges laterally from the recess (21 ) protrudes. Method for producing a positive and/or frictional connection between a self-clamping or self-piercing press-in element (5) having an opening (6) and a plastically deformable through-opening (3) in a wall (4) of a hollow profile (1) by pressing in the press-in element ( 5) into the through-opening (3) in a press-in direction, the through-opening (3) deforming around the press-in element (5) when the press-in element (5) is pressed into the through-opening (3) in the press-in direction, characterized by at least the following steps: a) manufacturing the through-opening (3) in the wall, b) positioning the press-in element (5) on a first side (8) of the wall (4), which faces an interior (9) of the hollow profile (1), coaxially to the through-opening (3), c) positioning a pressure element (18) on, on or in the press-in element (5) inside (9) of the hollow profile (1) in such a way that the pressure element (18 ) can exert a compressive force on the press-in element (5) in the press-in direction, d) passing a first end (12) of a tension element (13) through the through-opening (3) and the opening (6) from one of the first side (8) facing away from the second side (14) of the wall (4), which points away from the interior (9) of the hollow profile (1), e) connecting the first end (12) of the tension element (13) to the pressure element (18) in such a way, that a second end (16) of the pulling element (13) still protrudes from the through-opening (3), in Rich direction of the second side (14) of the wall (4), which points away from the interior (9) of the hollow profile (1), f) exerting a tensile force on the second end (16) of the tension element (13) such that the tensile force transmitted from the tension element (13) to the pressure element (18) and from the pressure element (18) as a pressure force to the press-in element (5) and the press-in element (5) thereby into the through-opening (3) with deformation of the through-opening (3) in the press-in direction is pressed in to produce the form-fitting and/or friction-fitting connection between the press-in element (5) and the through-opening (3). procedure after claim 7 , characterized by separating the first end (12) of the pull element (13) from the pressure element (18) and withdrawing the pull element (13) from the opening 6 and from the through opening (3). procedure after claim 7 or 8th , characterized in that at the first end (12) of the pulling element (13) an external thread (15) is formed, which is screwed to an internal thread (20) formed on the pressure element (18). procedure after claim 9 , characterized in that the pressure element (18) is formed by a pressure nut. procedure after claim 7 or 8th , characterized in that the pressure element (18) has a pressure element opening (19) and the connection of the first end (12) of the tension element (13) to the pressure element (18) takes place in that the first end (12) of the tension element (13) is brought into a position in which it protrudes from the pressure element opening (19) and into the interior (9) of the hollow profile (1), with at least one at the first end (12) of the tension element (13). a counter element (22) extending transversely to the pressing-in direction is provided, which is countered on a side of the pressure element (23) pointing away from the wall (4). procedure after claim 11 , characterized in that at the first end (12) of the tension element (13) is formed at least one extending transversely to the pressing-in recess (21) through which the counter element (22) is guided in such a way that it laterally emerges from the recess ( 21) protrudes. Method for producing a positive and/or frictional connection between a self-clamping or self-piercing press-in element (5) having an opening (6) and a plastically deformable through-opening (3) in a wall (4) of a hollow profile (1) by pressing in the press-in element ( 5) into the through-opening (3) in a press-in direction, the through-opening (3) deforming around the press-in element (5) when the press-in element (5) is pressed into the through-opening (3) in the press-in direction, characterized by at least following steps: a) manufacturing the through-opening (3) in the wall (4), b) positioning the press-in element (5) on a first side (8) of the wall (4), which faces an interior (9) of the hollow profile (1 ) points, coaxially to the through-opening (3), c) positioning a tension screw (23) on or in the press-in element (5) inside (9) of the hollow profile (1) in such a way that a screw head (24) of the tension screw (23) is countered on the press-in element (5) and a screw shank (25) of the tension screw protrudes through the opening (6) and protrudes with one end of the screw shank out of the through-opening (3) in the direction of a second side (14) of the wall (14), which points away from the interior (9) of the hollow profile (1), d) exerting a tensile force on the end of the screw shank in the press-in direction in such a way that the tensile force is transmitted from the tension screw (23) as a compressive force to the press-in element (5) and the press-in element (5) is pressed into the through-opening (3) by the compressive force, with the through-opening (3) being deformed in the press-in direction in order to produce the positive and/or friction-locked connection between the press-in element (5) and the through-opening (3). procedure after Claim 13 , characterized in that the tension screw (23) is removed from the opening (6) and from the through-opening (3).

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