DE102005016175A1 - C-section - Google Patents

Abstract

The present invention relates to a C-profile made of sheet metal for both sides planked partitions with two leg sections (2, 2 ') and a leg portions (2, 2') connecting the bottom portion (3), wherein the leg portions (2, 2 ') side surfaces ( 5) of the C-profile form and wherein at least one of the leg portions (2, 2 ') outwardly projecting beads (6), which form a contact surface for the planking. The invention is characterized in that the beads (6) are formed at least in sections such that at 0.3 mm penetration depth (E) of the beads (6) into a planking, the contact surface is greater than 5% of the side surface (5) and smaller 25th % of the page area is.

Description

The The present invention relates to a C-profile made of sheet metal for both sides planked partitions with two leg sections and one connecting the leg sections Bottom portion, wherein the leg portions side surfaces of the C-profile form and wherein at least one of the leg sections outward having projecting beads, which a contact surface for the planking form.

Such a C-profile, in which the leg portions has a plurality of parallel longitudinally extending, outwardly projecting beads, is known from DE 100 13 991 C1 known.

Although in the meantime, by using such previously known C-profiles drywall good sound insulation values can be achieved, there is a desire, the sound insulation properties continue to improve. The manufacturing costs should not or in as possible increased slightly become.

task The present invention is therefore a C-profile of the beginning so-called form, that in particular at low Additional costs the soundproofing is improved.

These Task is solved in a C-profile mentioned above in that the beads are at least partially formed such that at 0.3 mm penetration depth of the beads in a planking, the contact surface greater than 5% of the side surface and less than 25% of the side surface is.

By a corresponding formation of the beads with the inventive size of the contact surface is a significant improvement in soundproofing properties reached. The indication of the size of the contact surface is for a penetration depth of 0.3 mm specified. When mounting the C-profile according to the invention it comes to a certain due to the tension with the planking Penetration of the beads in the planking. In the case of plasterboard to press The beads are slightly in the surface of the plates. The indication However, the penetration depth does not mean that the C-profile is only in be protected in the installed state should or must always be installed with the same installation depth. Rather, this specification should clearly define the contact surface for the C-profile become independent from the later installation occurring forces and the resulting penetration depth when installed. The side surface results from the product of length and width of the leg sections, independently Of any existing cutouts, holes, deformations in the leg sections.

A Further improvement is achieved in that the beads so are formed and dimensioned that at 0.3 mm penetration of the Beading in a planking the contact surface greater than 10% of the side surface and less than 20% of the side surface is, in particular, larger than 12% of the side surface and less than 18% of the side surface.

Especially proven has, if the beads are designed and dimensioned, that at 0.3 mm penetration depth of the beads in a planking the contact surface greater than 13% of the side surface and less than 16% of the side surface is.

The Production is facilitated by the leg sections and the bottom portion consist of a one-piece sheet metal part.

advantageously, the beads are elongated and extend in the longitudinal direction of the C-profile, in particular via its entire length.

A good load distribution results when each leg section three to five has parallel beads, in particular four parallel beads.

advantageously, is the height the beads between 0.5 mm and 5 mm, in particular between 1 mm and 3 mm.

According to one particularly advantageous embodiment of the invention is at least one of the beads in the area of the contact surface and the radius at the vertex the bead is between 0.6 mm and 2.5 mm, in particular between 0.8 mm and 1.9 mm.

A Further improvement is achieved in that the beads so are formed such that the width of the contact surface in the region of one of the beads at 0.3 mm penetration depth of the beads in a planking between 1 mm and 3 mm, in particular between 1.3 and 2.2 mm.

The rigidity but also the sound insulation properties of the C-profile are further improved by the fact that the sheet of the C-profile has a knurling in at least part of its surface. The knurling results in local, in particular point-shaped deformations of the sheet. In this case, in particular, a large number of deformations per unit area may be provided, for example more than 5 deformations per cm ² or more than 10 deformations per cm ² ).

According to the invention can continue be provided that the beads at their top one each Tab and make a backseat at their bottom.

The Usability of the C-profile is enhanced by the fact that the two Leg sections are of different lengths and thereby allow two to assemble identical C-profiles into a rectangular profile in such a way that the shorter one Leg section of each one C-profile on the inside the longer one Leg section of the other C-profile comes to rest.

in this connection is advantageous if the beads of the two leg sections in such a way offset from each other, that when joining two C profiles to a rectangular profile, the projections of the beads of the shorter leg sections in the return of the Beading of the longer leg sections to come to rest. The offset of the beads results in the process a different distance of the beads from the bottom portion. Of the Distance between the beads of both leg sections, however, can be equal.

According to the invention has proven, if the thickness of the sheet is between 0.3 mm and 3 mm, in particular 0.4 mm to 0.6 mm.

Further Objectives, features, advantages and applications of the present Invention will become apparent from the following description of exemplary embodiments based on the drawing. In this case, all described and / or illustrated Features for itself or in any meaningful combination the object of Invention, also independent from the summary in individual claims or their dependency.

It demonstrate:

1 : A spatial representation of a C-profile according to the invention according to a first embodiment;

2 : A spatial representation of a C-profile according to the invention according to a second embodiment;

3 : A cross section through the section of a partition with the inventive C-profile 1 ;

4 : An enlarged detail A off 3 ;

5 : A cross section through two identical C profiles 1 , which are assembled into a rectangular profile and

6 : A cross section through the portion of a partition with a C-profile according to the invention according to a further embodiment.

As in particular in the 1 and 2 recognizable, has the C-profile 1 one floor section each 3 and two leg sections 2 . 2 ' on. The C-profile 1 is elongated. Accordingly, the bottom section 3 and the leg sections 2 . 2 ' each a substantially rectangular basic shape. The leg sections 2 . 2 ' are each on the long sides of the bottom section 3 provided and extend substantially perpendicular thereto in the same direction. At her the bottom section 3 opposite ends have the leg portions 2 . 2 ' each a right angled inward angled fold 13 on.

In the in the 1 to 5 Illustrated embodiments is the bottom portion 3 essentially flat. However, it has two in the longitudinal direction of the C-profile 1 extending grooves 4 on.

The two leg sections 2 . 2 ' each form a side surface 5 of the C-profile 1 , These are in the leg sections 2 . 2 ' beading 6 intended. In the embodiments shown in the figures, four beads are each 6 provided, extending in the longitudinal direction of the C-profile 1 extend over its entire length. The beads can 6 Other than shown, they may also be designed so that they only cover part of the length of the leg section 2 . 2 ' and / or extending in a direction other than the longitudinal direction.

The C-profile 1 with the leg sections 2 . 2 ' and the bottom section 3 consists of a one-piece sheet metal part. The leg sections 2 . 2 ' are brought by cold rolling or bending in the form shown in the figures. Also the beads 6 and the grooves 4 are produced by cold deformation of the steel sheet. At the in 1 illustrated embodiment, the sheet, apart from the beads 6 and the grooves 4 , essentially smooth. At the in 2 In contrast, the embodiment shown is a knurling 7 intended. Accordingly, the sheet has a large number of local, in particular punctiform deformations, as in 2 is clearly recognizable. In particular, more than five deformations per cm ² and in particular more than ten deformations per cm ^{2 can be} provided.

3 and 4 show how the C-profile 1 for the construction of a sectionally shown partition 8th can be used. Here it is C-section 1 with its bottom section 3 across the partition 8th aligned with it, with the leg sections 2 . 2 ' on the inside of the planking comes to the plant. As a planking, in particular, the gypsum plasterboard shown are suitable 9 . 9 ' . 9 '' , which via connecting means 10 , which are presently designed as screws, with the leg portions 2 . 2 ' are connected. In the lower section of 3 it can be seen that two plasterboard panels each 9 ' . 9 '' abut each other, with the joint with putty 15 closed is. In the interior of the partition 8th is also an insulating material 11 provided for insulation against sound and / or heat.

Because the leg sections 2 . 2 ' only with the beads 6 on the plasterboard 9 . 9 ' . 9 '' abutment, the contact surface is the most prominent areas of the beads 6 educated. Due to the elongated formation of the beads 6 Therefore, arise in the illustrated embodiment in the region of each bead 6 strip-shaped contact surface sections 12 , The area of a contact surface section 12 therefore results from the width R of the contact surface section 12 and its length. The entire contact surface is obtained by adding the individual contact surface sections 12 , These are in the illustrated embodiments for each side surface 5 , according to the four beads 6 , four contact surface sections 12 ,

It has been shown that a good sound insulation is achieved when the contact surface between 5% and 25% and in particular between 10% and 20% of the side surface 5 is. The side surface 5 is measured according to the product of the length of the L and the width B of the leg sections 2 respectively. 2 ' , regardless of any existing cutouts, holes, etc. in the leg sections 2 (see. 1 ). Since the contact surface can depend on the penetration depth E, the contact surface is assumed to be 0.3 mm penetration depth E of the beads 6 determined in the planking. Particularly good results are achieved when the contact surface is between 12 and 18%, preferably between 13% and 16% of the side surface.

The height of the beads 6 is between 0.5 and 5 mm, in particular between 1 mm and 3 mm. In the illustrated embodiments, the height of the beads of a C-profile is identical.

The beads 6 are arched in the area of the contact surface, as well in 4 is recognizable. The radius at the apex of the beads is in particular between 0.6 mm and 2.5 mm, preferably between 0.8 mm and 1.9 mm. Furthermore, the beads 6 formed such that the width R of the contact surface sections 12 at 0.3 mm penetration depth E of the beads 6 in a planking in each case between 1 mm and 3 mm, in particular between 1.3 and 2.1 mm.

The C-profiles 1 consist of sheet steel with a thickness between 0.3 mm and 3 mm, in particular between 0.4 mm and 0.6 mm. The modulus of elasticity of the sheet is between 196 kN / mm ² and 216 kN / mm ² . The tensile strength of the sheet is between 270 MPa and 500 MPa.

In 5 is recognizable as two identical C-profiles 1 can be assembled to a rectangular profile. To facilitate this, the two leg sections 2 . 2 ' a C-profile 1 formed differently long, whereby the possibility exists, the two C-profiles 1 easy to nest with each other. In this case, the shorter of the two leg sections 2 a C-profile 1 on the inside of the longer of the two leg sections 2 ' of the other C-profile 1 arranged. The length of the shorter leg section 2 is so dimensioned that this in which between the fold 13 and the inside 14 of the bottom section 3 resulting space can be included. The inside 14 of the bottom section 3 is the leg sections 2 . 2 ' facing side of the bottom section 3 , The difference in length between the two leg sections 2 and 2 ' in this case is in particular twice the sheet thickness or more. Preferably, the difference in length is between two and four times the sheet thickness.

Furthermore, the beads 6 the two leg sections 2 . 2 ' arranged offset to one another such that when joining the two C-profiles 1 to the in 5 illustrated rectangular profile the beads 6 of the shorter leg section 2 with their protrusions in the recesses of the beads 6 of the longer leg section 2 ' to come to rest. Here is the distance between the beads 6 of the shorter leg section 2 and the distance of the beads 6 of the longer leg section 2 ' to the bottom section 3 different.

6 shows a further embodiment of a C-profile according to the invention 1 , installed in a partition B. Construction of the C-profile 1 and the partition 8th agree largely with the in the 3 and 4 shown embodiment match. On the relevant description, which accordingly for 6 applies, reference is made. Parts of the same function are provided with the same reference numerals. At the in 6 However, the embodiment shown is in the bottom section 3 only one along the C-profile groove 4 provided, which is formed wider than that in 3 shown grooves.

1

C-section

2, 2 '

leg portion

3

bottom section

4

groove

5

side surface

6

Beading

7

knurling

8th

partition wall

9 9 ', 9' '

Plasterboard

10

connecting means

11

insulation

12

Contact surface section

13

fold

14

inside

15

putty

L

Length of side surface

B

width the side surface

e

penetration depth

R

width the contact surface sections

Claims (14)

C-profile made of sheet metal for both sides planked partitions with two leg sections ( 2 . 2 ' ) and one leg sections ( 2 . 2 ' ) connecting floor section ( 3 ), wherein the leg sections ( 2 . 2 ' ) Side surfaces ( 5 ) of the C-profile ( 1 ) and wherein at least one of the leg sections ( 2 . 2 ' ) outwardly projecting beads ( 6 ), which form a contact surface for the planking, characterized in that the beads ( 6 ) are formed such that at 0.3 mm penetration depth (E) of the beads ( 6 ) in a planking the contact surface greater than 5% of the side surface ( 5 ) and less than 25% of the side surface ( 5 ). C-profile according to claim 1, characterized in that the beads ( 6 ) are formed such that at 0.3 mm penetration depth (E) of the beads ( 6 ) in a planking the contact surface greater than 10% of the side surface ( 5 ) and less than 20% of the side surface ( 5 ), in particular greater than 12% of the side surface ( 5 ) and less than 18% of the side surface ( 5 ). C-profile according to claim 1 or 2, characterized in that the beads ( 6 ) are formed such that at 0.3 mm penetration depth (E) of the beads ( 6 ) in a planking the contact surface greater than 13% of the side surface ( 5 ) and less than 16% of the side surface ( 5 ). C-profile according to one of claims 1 to 3, characterized in that the leg sections ( 2 . 2 ' ) and the bottom section ( 3 ) consist of a one-piece sheet metal part. C-profile according to one of claims 1 to 4, characterized in that the beads ( 6 ) are elongated and in the longitudinal direction of the C-profile ( 1 ), in particular over its entire length. C-profile according to one of claims 1 to 5, characterized in that each leg section ( 2 . 2 ' ) three to five parallel beads ( 6 ), in particular four parallel beads ( 6 ) having. C-profile according to one of claims 1 to 6, characterized in that the height of the beads ( 6 ) is between 0.5 mm and 5 mm, in particular between 1 mm and 3 mm. C-profile according to one of claims 1 to 7, characterized in that at least one of the beads ( 6 ) is curved in the region of the contact surface and the radius at the apex of the bead ( 6 ) is between 0.6 mm and 2.5 mm, in particular between 0.8 mm and 1.9 mm. C-profile according to one of claims 1 to 8, characterized in that the beads ( 6 ) are formed such that the width of a portion (R) of the contact surface in the region of one of the beads ( 6 ) at 0.3 mm penetration depth (E) of the beads ( 6 ) in a planking between 1 mm and 3 mm, in particular between 1.3 and 2.1 mm. C-profile according to one of claims 1 to 9, characterized in that the sheet of the C-profile ( 1 ) has knurling in at least part of its surface. C-profile according to one of claims 1 to 10, characterized in that the beads ( 6 ) Each at its top a projection and on its underside form a recess. C-profile according to claim 11, characterized in that the two leg sections ( 2 . 2 ' ) are of different lengths, thereby allowing two identical C-profiles ( 1 ) to form a rectangular profile in such a way that the shorter leg section ( 2 ) of each one C-profile on the inside of the longer leg portion ( 2 ' ) of the other C-profile comes to rest. C-profile according to claim 12, characterized in that the beads ( 6 ) of the two leg sections ( 2 . 2 ' ) are offset from one another in such a way that when joining two C-profiles ( 1 ) to a rectangular profile the projections of the beads ( 6 ) of the shorter leg sections ( 2 ) in the recesses of the beads ( 6 ) of the longer leg sections ( 2 ' ) come to rest. C-profile according to one of claims 1 to 13, characterized in that the thickness of the sheet is between 0.3 mm and 3 mm, in particular from 0.4 mm to 0.6 mm.