EP2015879B1 - Fastening element for dry construction elements, and method for the production of such a fastening element - Google Patents

Abstract

Fixing element (1) comprises recesses (6) each partially surrounded by sliding surfaces which are inclined relative to the imaginary middle line of a sheet metal material (15). The sliding surfaces are for connecting elements to be inserted into a connecting section (5). An independent claim is also included for a method for the production of a fixing element. Preferred Features: The sliding surfaces have an angle of inclination of more than 5[deg], especially more than 7[deg], to the imaginary middle line of a sheet metal material.

Description

The present invention relates to a fastener for drywall components and a method of making such a fastener.

From the CH 486 281 is already a Welltafel made of metal with two perpendicularly crossing corrugations known. The corrugations form a depression on one side of the corrugated board and an elevation on the other side. To produce the corrugated board, a band-shaped metal is passed between rollers having two teeth.

Another surveys and depressions exhibiting sheet material is from the EP 0 674 551 B1 known, which describes a method for producing such a material. According to this document, the rollers used in the production of teeth in involute form.

In the from the EP 0 891 234 B1 known methods are used for the deformation of a sheet material rolls, which have rounded teeth on the top.

From the PCT / GB81 / 00095 and the GB 2 095595 For example, a metal sheet having a plurality of protrusions and a method of manufacturing the same are known.

The EP 0 279 798 describes a trapezoidal sheet for construction, especially for roofs and facades. To increase the stability, the trapezoidal sheet has grooved profiles extending in a direction of the profile, which are arranged parallel to one another.

Fasteners for components of drywall are regularly fixed with screws, which are screwed into or through the sheet material. If the fastener is flat at the point of insertion, the exact positioning of the screws is not always unproblematic, since the screws during insertion, which normally happens with the cordless screwdriver, can slip away. However, the provision of a known from the prior art wavy region alone would not lead to an optimal handling of the fastener.

Object of the present invention is therefore to provide a fastener for components of the drywall, which can be mounted very easily, and to provide a method for producing such a fastener.

This object is achieved by a fixing element for components of the dry construction, which has a sheet material with at least one connecting portion, wherein the sheet material is provided in the region of at least one connecting portion with a plurality of wells, wherein the depressions are formed by deformed portions of the sheet material, so that the depressions on one side of the sheet material protrude on the form the opposite side of the sheet material, wherein the recesses are each surrounded by relative to an imaginary center line of the sheet material inclined sliding surfaces for to be introduced into or through the connecting portion connecting means.

It is provided that the sheet material in the at least one connecting portion, apart from the depressions and / or elevations, no parallel to the imaginary center line of the sheet material surface.

The sliding surfaces allow a particularly simple fixing of the fastener. If screws are used for this, they can slide due to the action of the sliding surfaces in the next recess and screwed there. In this way, the screws can always be used at precisely defined positions, without incurring additional expense.

Screws can be used particularly easily if the sliding surfaces each occupy an angle of inclination of more than 5 °, in particular of more than 7 ° to the imaginary center line of the sheet material.

According to the invention has proven particularly useful when the center distance between the individual wells is between three times and ten times the material thickness of the sheet material, in particular between four times and six times the material thickness of the sheet material. Material thickness means the thickness of the sheet material itself, ie without consideration of elevations and depressions. At the same time a good mountability of the fastener and high stability values are achieved.

Furthermore, it has proven useful if the elevations and the depressions are provided on both sides of the sheet material. A high stability with good mountability is also promoted by the fact that the elevations have a height between 0.8 and 1.4 times the material thickness of the sheet material, measured from the imaginary center line of the sheet material, and / or if the Recesses have a depth between 0.3 times and 2.0 times, in particular between 0.3 times and 1.0 times the material thickness of the sheet material, measured from the outer envelope surface of the sheet material having. The outer envelope is formed by the highest points of the surveys.

According to an advantageous embodiment of the invention, it is provided that the material thickness of the sheet material is between 0.2 mm and 2.0 mm, in particular between 0.3 mm and 0.8 mm, preferably between 0.4 mm and 0.7 mm.

According to the invention, it can further be provided that the total height of the deformed sheet material in the connecting section is between twice and three times the material thickness of the sheet material. The total height is measured, in contrast to the material thickness, taking into account the possibly provided on both sides surveys.

According to the invention, the fastening element can be designed in particular as C-profile, U-profile, L-profile, hat profile, T-profile or Z-profile.

The object underlying the invention is also achieved by a method for producing a fastener according to the invention, in which a substantially planar sheet material formed by a top roller having a first teeth and a bottom roller having second teeth Gap is passed to form the recesses and protrusions and the inclined sliding surfaces.

By having the upper roll and / or the lower roll a plurality of toothed disks arranged side by side, pits can be formed in a plurality of juxtaposed rows. Such top rollers or bottom rollers are also particularly simple and inexpensive to produce, since the individual toothed discs can be processed separately and are joined together at the end to form the top or bottom roller.

It is advantageously provided that the toothed disks have a row of the first and second teeth on their peripheral side.

According to the invention, it has proven useful if the teeth each have four straight flanks, which are inclined in particular between 25 ° and 35 °, preferably by 30 ° to a median plane of the disc.

Furthermore, it can be provided according to the invention that the first teeth of the upper roller and the second teeth of the lower roller engage with each other and / or upper roller and lower roller are arranged such that each one of the first teeth protrudes into the middle of a gap between each two of the second teeth ,

Other objects, features, advantages and applications of the present invention will become apparent from the following description of exemplary embodiments with reference to the drawings. All described and / or illustrated features alone or in any combination form the subject matter of the invention, regardless of the summary in individual claims or their dependency.

Fig. 1a:

eine perspektivische Darstellung eines erfindungsgemäßen Befestigungselements nach einer ersten Ausführungsform;

Fig. 1b:

eine vergrößerte Darstellung eines Querschnitts durch einen Teil des Verbindungsabschnitts des Befestigungselements aus Fig. 1a;

Fig. 2:

ein erfindungsgemäßes Befestigungselement nach einer weiteren Ausführungsform;

Fig. 3:

ein erfindungsgemäßes Befestigungselement nach einer weiteren Ausführungsform;

Fig. 4a - c:

das Einschrauben einer Schraube in einen Verbindungsabschnitt eines erfindungsgemäßen Befestigungselements;

Fig. 5a:

eine schematische Darstellung einer erfindungsgemäßen Oberwalze und Unterwalze;

Fig. 5b:

ein vergrößerter Ausschnitt aus Fig. 5a;

Fig. 6a:

eine schematische Darstellung einer gezahnten Scheibe der Oberwalze oder Unterwalze in Draufsicht,

Fig. 6b:

die gezahnte Scheibe aus Fig. 6a im Schnitt;

Fig. 7a:

eine schematische Darstellung einer weiteren gezahnten Scheibe der Oberwalze oder Unterwalze in Draufsicht;

Fig. 7b:

die gezahnte Scheibe aus Fig. 7a im Schnitt;

Fig. 8a - c:

vergrößerte Details der einzelnen Zähne der gezahnten Scheiben aus Fig. 6a und 7a;

Fig. 9a:

eine schematische vereinfachte Darstellung der Anordnung der einzelnen gezahnten Scheiben der Oberwalze und der Unterwalze;

Fig. 9b:

ein vergrößertes Detail aus Fig. 9a.

Show it:

Fig. 1a:

a perspective view of a fastener according to the invention according to a first embodiment;

Fig. 1b:

an enlarged view of a cross section through a part of the connecting portion of the fastener from Fig. 1a ;

Fig. 2:

an inventive fastener according to a further embodiment;

3:

an inventive fastener according to a further embodiment;

Fig. 4a - c:

the screwing of a screw in a connecting portion of a fastening element according to the invention;

Fig. 5a:

a schematic representation of a top roll and bottom roll according to the invention;

Fig. 5b:

an enlarged section Fig. 5a ;

6a:

a schematic representation of a toothed disc of the upper roll or lower roll in plan view,

Fig. 6b:

the toothed disc Fig. 6a on average;

Fig. 7a:

a schematic representation of another toothed disc of the upper roll or lower roll in plan view;

Fig. 7b:

the toothed disc Fig. 7a on average;

8a-c:

enlarged details of each tooth of the toothed discs Fig. 6a and 7a ;

Fig. 9a:

a simplified schematic representation of the arrangement of the individual toothed pulleys of the upper roller and the lower roller;

Fig. 9b:

an enlarged detail Fig. 9a ,

The Fig. 1a . 2 and 3 The fastening elements 1, 1 ', 1 "each consist of a profiled sheet metal material with a bottom section 2 at the ends of which bent leg sections 3 are provided. The leg sections 3, which each form a fastening flange, extend essentially perpendicular to the bottom section 2.

In the in the FIGS. 1a and 2 illustrated embodiments, the leg portions 3 at their outer ends respectively bent, inwardly facing strips 4, which support edges form. Such fasteners 1, 1 'are also referred to as C-profile.

This in FIG. 3 illustrated fastener 1 ", which has no bent strips at the outer ends of the leg portions 3, is a so-called U-profile.

The described fastening elements 1, 1 ', 1 "can be used in dry construction as a supporting construction, for example in the construction of partitions, suspended ceilings, etc.

The illustrated fastening elements 1, 1 ', 1 "consist of metal, in particular galvanized sheet steel and are brought by forming from a substantially planar sheet material in the illustrated spatial shapes of the fasteners 1, 1', 1".

The sheet material of the fastening elements 1, 1 ', 1 "has in each case at least one connecting portion 5. In the in the Fig. 1 and 2 illustrated embodiments, the two leg portions 3 are formed as a connecting portion 5 and in this area provided with a plurality of recesses 6, which are formed by deformed portions of the sheet material. Other than illustrated, it is also possible to provide the connecting portion with the recesses 6 only on a part of the surface of the leg portions 3. At the in Fig. 3 fastener 1 "shown, however, not only have the leg portions 3, but also the bottom portion 2 such depressions 6.

The fact that in the in the FIGS. 1a and 2 illustrated fasteners 1, 1 'of the bottom portion 2 has no punctiform depressions, but only longitudinally extending beads 8, does not mean that the bottom portion 2 would be inappropriate for connection to other components par excellence. The screwing of connecting means, such. As screws, facilitating depressions 6 are limited in these two embodiments, however, to the area in which particularly often other components are defined.

FIG. 1b shows an enlarged partial section through the sheet material of FIG. 1a However, there are no differences from those in the FIGS. 2 and 3 illustrated fasteners 1 'and 1 ". FIG. 1b shows clearly that the recesses 6 are formed by deformed portions of the sheet material, wherein the recesses 6 on one side of the sheet material form elevations 7 on the opposite side of the sheet material.

The depressions 6 are each surrounded by relative to an imaginary center line M of the sheet material inclined sliding surfaces 9 for in or through the connecting portion 5 to be introduced connecting means. The sliding surfaces 9 in this case have an angle of inclination N of more than 5 degrees, in particular of more than 7 Degrees to the imaginary center line M of the sheet material. Correspondingly, regions which lead to the respective depression 6 form around the depression 6. Screws can therefore, as described in more detail below, slide on the sliding surfaces 9 to the recesses 6.

In FIG. 1b is also clearly visible that the elevations 7 and the recesses 6 are formed on both sides of the sheet material. In the FIGS. 1a and 3 are the elevations 7 symbolized by small circles and the wells 6 by small diamonds.

According to the invention, the center distance A between the individual depressions 6 is preferably between three times and ten times the material thickness S of the sheet material, in particular between four times and six times the material thickness S. If the depressions 6 are formed on both sides of the connecting portion 5, as illustrated, Thus, the center distance A is used in each case between adjacent recesses 6, regardless of on which side of the sheet material, the respective recess 6 is formed.

The elevations 7 preferably have a height H between 0.8 times and 1.4 times the material thickness S of the sheet material, measured from the imaginary center line M of the sheet material.

For the depressions 6, these have a depth T between 0.3 times and 2.0 times, in particular between 0.3 times and 1.0 times, the material thickness S of the sheet material, measured from the outer envelope surface F of the sheet material having. The outer envelope surface F is formed by the highest points of the respective elevations 7.

The material thickness S of the sheet material is advantageously between 0.2 mm and 1.0 mm, in particular between 0.3 mm and 0.8 mm, preferably between 0.4 mm and 0.7 mm.

In this case, the depressions 6 and elevations 7 have a stabilizing effect. This means that the fastener has a much higher load capacity with the same material thickness compared with conventional fasteners. This makes it possible to reduce the material thickness S of the sheet material and thus also the production costs and still achieve a high load capacity.

The recesses 6 and elevations 7 are formed so that the total height of the deformed sheet material in the connecting portion 5 is between twice and three times the material thickness S of the sheet material.

The Figures 4a, 4b and 4c clarify the beneficial effect of the sliding surfaces 9. Will, as in FIG. 4a shown, a screw 10, of which only the tip is shown, placed on the connecting portion, it slides due to the action of the inclined sliding surfaces 9 in a simple manner to the nearest recess 6 and comes here to lie in a well-defined position. This is in Fig. 4b shown. Now the screw 10 can be screwed with its tip in the continuous sheet material ( Fig. 4c ). The recess 6 prevents that the screw 10 slips when screwing. In this way, screws 10 can be screwed into the connecting section 5 particularly quickly and nevertheless accurately.

In the production of the fastening elements 1, 1 ', 1 ", a substantially flat sheet material 15 is passed through a gap formed by a top roller 12 having a first teeth 11 and a bottom roller 14 having second teeth 13 FIG. 5a and in FIG. 5b illustrated enlarged section shown. Here it is easy to see how the flat sheet material 15 supplied from the left side is deformed under the effect of the protruding and interlocking first and second teeth 11, 13 and the recesses 6 and elevations 7 form correspondingly. Each tooth tip leaves a distinct impression on the sheet material 15, whereby the recesses 6 are formed in the surface of the steel sheet.

The correspondingly processed sheet material 15 can then be transformed into subsequent steps, not shown, for. B. to a in the FIGS. 1a and 2 represented C-profile or to in FIG. 3 illustrated U-profile.

The top roller 12 and the bottom roller 14 each have a plurality of juxtaposed toothed discs 16, 17, which in the Fig. 6a, 6b, 7a, 7b and 8a-c are shown in more detail. Each of the toothed discs 16, 17 has on its outside a number of uniformly distributed over the circumference arranged teeth. Each tooth has a flat, substantially square tooth tip 18, the side length of the square being 0.4 mm in the illustrated embodiment. In addition, each tooth has four flat flanks 19, wherein the angle between two opposite flanks in the illustrated embodiment is about 60 degrees (see. FIGS. 8a and 8c ). Accordingly, the angle between the flanks 19 and the median plane M of the toothed discs 16, 17 is 30 degrees.

The toothed discs 16 and 17 each have in their center a cavity 20 for receiving a drive shaft, not shown. To produce a positive connection between the drive shaft and the toothed discs 16, 17 are formed in this keyways 21.

In the Figures 6a and 7a shown toothed discs 16, 17 are formed substantially identical to each other. However, there is a difference in that the teeth provided on the circumference are offset from each other by half a tooth pitch relative to the keyway 21 formed in the cavity 20.

FIG. 9a illustrates schematically how the individual toothed discs 16, 17 are joined to the respective upper roller 12 and lower roller 14.

In FIG. 9a the upper roller 12 and the lower roller 14 are shown only schematically and in detail. Thus, with the line 22, the position of the axis of rotation of the upper roller 12 and with line 23, the position of the axis of rotation of the lower roller 14 is indicated. Of the upper roller 12 while only the lower half and of the lower roller 14, only the upper half is outlined. The drawing illustrates, however, that both the lower roller 14 and on the upper roller 12, the toothed discs 16 and 17 are arranged in alternation. This means that next to a toothed disc 16 is a toothed disc 17 and vice versa. As a result, the rows of teeth of the individual discs 16, 17 are offset from each other by half a pitch, thus the teeth of the upper and lower rollers 12, 14 are arranged in diagonal rows.

The upper roller 12 and the lower roller 14 also have a plurality of spacers D. These allow the sheet material between Upper and lower rollers 12, 14 pass without the sheet material is deformed in the areas formed by the spacers.

The upper roller 12 and the lower roller 14 are synchronously driven by gears, as shown in FIG FIG. 9a is indicated.

As FIG. 9b can be removed, the toothed discs 16, 17 of the upper roller 12 are arranged to the toothed discs 16, 17 of the lower roller 14 without axial displacement. Accordingly, the tooth tips of the toothed discs 16, 17 of the upper roller 12 each protrude into the middle of the interdental space between two teeth of the toothed discs 16, 17 of the lower roller 14.

LIST OF REFERENCE NUMBERS

1, 1 ', 1 "

fastener

2

bottom section

3

leg portion

4

strip

5

connecting portion

6

deepening

7

survey

8th

Beading

9

sliding surface

10

screw

11

first teeth

12

top roll

13

second teeth

14

bottom roll

15

sheet material

16

toothed disc

17

toothed disc

18

tooth tip

19

flank

20

cavity

21

keyway

22

axis of rotation

23

axis of rotation

M

center line

N

tilt angle

A

Center distance

S

material thickness

H

height

D

spacer

T

depth

F

envelope

Claims (15)

1. Fastening element (1, 1', 1") for dry construction elements, which comprises a sheet metal material (15) having at least one connecting portion (5), wherein the sheet metal material (15) is provided with a multiplicity of depressions (6) in the region of the at least one connecting portion (5), wherein the depressions (6) are formed by deformed regions of the sheet metal material (15) such that the depressions (6) on one side of the sheet metal material form elevations (7) on the opposite side of the sheet metal material (15), characterized in that the depressions (6) are in each case surrounded by sliding surfaces (9) for connecting means to be introduced into or through the connecting portion (5), which sliding surfaces are inclined relative to an imaginary centre line (M) of the sheet metal material (15), in that the sheet metal material (15) in the at least one connecting portion (5) has no surface parallel to the imaginary centre line (M) of the sheet metal material (15), except for the depressions (6) and/or elevations (7).
2. Fastening element according to Claim 1, characterized in that the sliding surfaces (9) in each case assume an angle of inclination (N) of more than, 5°, in particular of more than 7°, to the imaginary centre line (M) of the sheet metal material (15).
3. Fastening element according to Claim 1 or 2, characterized in that the centre point spacing (A) between the individual depressions (6) is between three times and ten times the material thickness (S) of the sheet metal material (15), in particular between four times and six times the material thickness (S) of the sheet metal material (15).
4. Fastening element according to one of Claims 1 to 3, characterized in that the elevations (7) and the depressions (6) are provided on both sides of the sheet metal material (15).
5. Fastening element according to one of Claims 1 to 4, characterized in that the elevations (7) have a height (H) between 0.8 times and 1.4 times the material thickness (S) of the sheet metal material (15), measured from the imaginary centre line (M) of the sheet metal material (15).
6. Fastening element according to one of Claims 1 to 5, characterized in that the depressions (6) have a depth (T) between 0.3 times and 2.0 times, in particular between 0.3 times and 1.0 times, the material thickness (S) of the sheet metal material (15), measured from the outer enveloping surface (F) of the sheet metal material.
7. Fastening element according to one of Claims 1 to 6, characterized in that the material thickness (S) of the sheet metal material (15) is between 0.2 mm and 2.0 mm, in particular between 0.3 mm and 0.8 mm, preferably between 0.4 mm and 0.7 mm.
8. Fastening element according to one of Claims 1 to 7, characterized in that the total height of the deformed sheet metal material in the connecting portion (5) is between two times and three times the material thickness (S) of the sheet metal material (15).
9. Fastening element according to one of Claims 1 to 8, characterized in that the fastening element (1, 1', 1") is designed as a C-profile, U-profile, L-profile, hat profile, T-profile, or Z-profile.
10. Method for the production of a fastening element according to one of Claims 1 to 9, wherein a substantially flat sheet metal material (15) is guided through a nip formed by an upper roller (12) having first teeth (11) and a lower roller (14) having second teeth (13), in order to form the depressions (6) and elevations (7) and also the inclined sliding surfaces (9).
11. Method according to Claim 10, characterized in that the upper roller (12) and/or the lower roller (14) comprise a plurality of toothed discs (16, 17) arranged next to one another.
12. Method according to Claim 10 or 11, characterized in that the toothed discs (16, 17) have a row of the first or second teeth (11, 13) on their circumferential side.
13. Method according to one of Claims 10 to 12, characterized in that the teeth (11, 13) in each case have four straight flanks (19) which are inclined in particular between 25° and 35°, preferably by 30°, to a centre plane (E) of the toothed disc (16, 17).
14. Method according to one of Claims 10 to 13, characterized in that the first teeth (11) of the upper roller (12) and the second teeth (13) of the lower roller (14) intermesh.
15. Method according to one of Claims 10 to 14, characterized in that the upper roller (12) and lower roller (14) are arranged in such a way that in each case one of the first teeth (11) protrudes into the centre of a gap between in each case two of the second teeth (13).

Images