AU2006230984B2

AU2006230984B2 - C-shaped profile

Info

Publication number: AU2006230984B2
Application number: AU2006230984A
Authority: AU
Inventors: Alfons Jean Knauf
Original assignee: Richter System GmbH and Co KG
Current assignee: Richter System GmbH and Co KG
Priority date: 2005-04-07
Filing date: 2006-02-15
Publication date: 2010-10-28
Anticipated expiration: 2026-02-15
Also published as: US20090126315A1; EP1866498B1; CN101151426B; AU2006230984A1; NO20075667L; DK1866498T3; CN101151426A; RU2005124565A; DE102005016175A1; EP1866498A1; WO2006105826A1; RU2317379C2; NO340234B1

Description

C:\NRPonbl\DCC\AKW0204887 I.DOC-24/09/20O C-SHAPED PROFILE 100011 The present invention relates to a C-shaped sheet metal profile for partitions that are planked on both sides, having two leg sections and one bottom section connecting the 5 two leg sections, the leg sections forming lateral surfaces of the C-shaped profile and at least one of the leg sections having beads protruding outward and forming a support surface for the planking. [0002] A C-shaped profile of this type in which the leg sections have a plurality of 10 parallel beads running longitudinally and protruding outward is known from DE 100 13 991 CI. [0003] Although effective sound insulation can now be achieved for dry construction walls produced using such previously known C-shaped profiles, it is desirable to further 15 improve the sound-insulating properties. The manufacturing costs should not be increased or only minimally increased in this process. 100041 Therefore, the present invention seeks to further refine a C-shaped profile of the type recited at the outset so that the sound-insulating properties are improved with minimal 20 additional costs. 100051 In one aspect, this is achieved in the case of the C-shaped profile recited at the outset in that the beads are configured at least in some sections in such a way that the support surface is greater than 5% and less than 25% of the lateral surface when the 25 penetration depth of the beads into a planking is 0.3 mm. [0005A] In another aspect there is provided a C-shaped sheet metal profile for providing sound insulation in a partition planked on both sides comprising: a first leg section; a second leg section, and a bottom section connecting the first and second leg 30 sections, the first and second leg sections forming lateral surfaces of the C-shaped profile and the first leg section having beads protruding outward therefrom in order to provide a support surface for planking, the beads being configured in such a way that the support C :RPorlbl\DCCAKW\32O4887 DOC.24/9/2010 - la surface is greater than 5% of the lateral surface less than 25% of the lateral surface and a penetration depth of the beads into the planking is 0.3 mm for effective sound insulation. 100061 Appropriate configuration of the beads with the support surface size according to 5 the present invention makes it possible to significantly improve the sound-insulating properties. The specification of the contact surface size is provided for a penetration depth of 0.3 mm. During installation of the C-shaped profile of the present invention, the bracing against the planking results in a certain penetration of the beads into the planking. In the case of gypsum 10 plasterboards, the beads press slightly into the surface of the boards. However, the specification of the penetration depth does not mean that the C-shaped profile is only protected in the installed state or must always be installed with the same penetration depth. Rather this specification is intended to clearly define the support surface for the C-shaped profile regardless of the forces occurring during subsequent installation and the resulting penetration depth in the installed state. The lateral surface results from the product of the length and width of the leg sections regardless of any cutouts, bore holes, and deformations existing in the leg sections. [00071 A further improvement is achieved in that the beads are configured and dimensioned in such a way that the support surface is greater than 10% of the lateral surface and less than 20% of the lateral surface, in particular greater than 12% of the lateral surface and less than 18% of the lateral surface, when the penetration depth of the beads into a planking is 0.3 mm. [00081 It is particularly advantageous when the beads are configured and dimensioned such that the support surface is greater than 13% of the lateral surface and less than 16% of the lateral surface when the penetration depth of the beads into a planking is 0.3 mm. 10009] Manufacture is facilitated in that the leg sections and the bottom section are made from one piece of sheet metal. 10010] The beads are advantageously oblong and run in the longitudinal direction of the C shaped profile, in particular over its entire length. 100111 Effective load distribution results when each leg section has three to five parallel beads, in particular four parallel beads. [0012] The height of the beads is advantageously between 0.5 mm and 5 mm, in particular between 1 mm and 3 mm. 2 [00131 According to a particularly advantageous embodiment of the present invention, at least one of the beads is convex in the region of the support surface and the radius at the top of the bead is between 0.6 mm and 2.5 mm, in particular between 0.8 mm and 1.9 mm. [00141 A further improvement is achieved in that the beads are configured in such a way that the width of the contact surface in the region of one of the beads is between 1 mm and 3 mm, in particular between 1.3 mm and 2.2 mm, when the penetration depth of the beads into a planking is 0.3 mm. [00151 The rigidity as well as the sound-insulating properties of the C-shaped profile is improved in that at least part of the surface of the sheet metal of the C-shaped profile has knurling. The knurling results in local, in particular punctiform, deformations of the sheet metal. In this context a large number of deformations may be provided per unit area, e.g., more than 5 deformations per cm 2 or more than 10 deformations per cm 2 [00161 It may also be provided according to the present invention that the beads form a protrusion on their top side and a recess on their bottom side. 100171 The usability of the C-shaped profile is expanded in that the two leg sections have different lengths, thus making it possible to join two identical C-shaped profiles to form a rectangular profile such that the shorter leg section of the C-shaped profile rests on the interior side of the longer leg section of the other C-shaped profile. [00181 In this context it is advantageous when the beads of the two leg sections are staggered with respect to one another such that when two C-shaped profiles are joined to form a rectangular profile, the protrusions of the beads of the shorter leg sections rest in the recesses of the beads of the longer leg sections. The staggering of the beads results in a varying distance of the beads from the bottom section. However, the distance between the beads of both leg sections may be equal. 3 100191 According to the present invention, it is advantageous for the thickness of the sheet metal to be between 0.3 mm and 3 mm, in particular between 0.4 mm and 0.6 mm. 100201 Additional objectives, features, advantages, and possible applications of the present invention result from the following description of exemplary embodiments on the basis of the drawings. All described and/or depicted features alone or in any combination form the object of the present invention regardless of their combination in the individual claims or their reference. [00211 The figures show: [00221 Figure I shows a spatial representation of the C-shaped profile of the present invention according to a first specific embodiment; [00231 Figure 2 shows a spatial representation of the C-shaped profile of the present invention according to a second specific embodiment; 100241 Figure 3 shows a cross section of the section of a partition having the C-shaped profile of the invention from Figure 1; 100251 Figure 4 shows an enlarged detail A from Figure 3; [00261 Figure 5 shows a cross section of two identical C-shaped profiles from Figure 1 joined to form a rectangular profile; and [00271 Figure 6 shows a cross section of the section of a partition having the C-shaped profile of the invention according to a further specific embodiment. [00281 As shown in Figures 1 and 2 in particular, C-shaped profile I has a bottom section 3 and two leg sections 2, 2'. C-shaped profile I has an oblong shape. Accordingly, bottom section 3 and leg sections 2, 2' have an essentially rectangular base form. Leg sections 2, 2' are provided on each lateral side of bottom section 3 and extend in the same direction essentially 4 perpendicularly to the bottom section. Each end of leg sections 2, 2' facing away from bottom section 3 has a fold 13 angled inward at a right angle. 100291 In the embodiments shown in Figures I through 5, bottom section 3 is essentially flat. However, it has two grooves 4 extending in the longitudinal direction of C-shaped profile 1. 100301 Each leg section 2, 2' forms a lateral surface 5 of C-shaped profile 1. Beads 6 are provided in leg sections 2, 2'. Four beads 6 extending in the longitudinal direction of C-shaped profile I over its entire length are provided in the embodiments shown in the figures. As a variation, beads 6 may also be configured in such a way that they extend only over a portion of the length of leg section 2, 2' and/or in a direction other than the longitudinal direction. [00311 C-shaped profile I including leg sections 2, 2' and bottom section 3 is made from one piece of sheet metal. Leg sections 2, 2' are shaped as shown in the figures by cold rolling or bending. Beads 6 and grooves 4 are also produced by cold deformation of the steel sheet. In the case of the embodiment shown in Figure 1, the sheet metal is essentially smooth except for beads 6 and grooves 4. However, in the embodiment shown in Figure 2, knurling 7 is provided. Accordingly, the sheet metal has a large number of local, in particular punctiform, deformations as clearly shown in Figure 2. More than 5 deformations per cm 2 and in particular more than 10 2 deformations per cm may be provided. [0032] Figures 3 and 4 show how C-shaped profile I may be used to produce a partition 8 (partially shown). In this context bottom section 3 of C-shaped profile I is perpendicular to partition 8, leg sections 2, 2' abutting the inside of the planking. In particular, shown gypsum plasterboards 9, 9', 9" connected via connecting means 10, primarily designed as screws, to leg sections 2, 2' are suitable as planking. The lower portion of Figure 3 shows that two gypsum plasterboards 9', 9" abut one another, the joint being sealed with putty 15. An insulating material S1I is provided inside partition 8 in order to insulate against sound and/or heat. 100331 Since only beads 6 of leg sections 2, 2' contact gypsum plasterboards 9, 9', 9", the support surface is formed by the regions of beads 6 protruding the farthest. The oblong 5 configuration of beads 6 results in band-shaped support surface sections 12 in the region of each bead 6 in the embodiment shown. The area of a support surface section 12 therefore results from width R of support surface section 12 and its length. The total support surface is the result of the addition of individual support surface sections 12. In the specific embodiments shown, there are four support surface sections 12 for each lateral surface 5, corresponding to the four beads 6. [00341 It has been determined that effective sound insulation is achieved when the support surface is between 5% and 25%, and in particular between 10% and 20%, of lateral surface 5. Lateral surface 5 is measured as the product of length L and width B of leg sections 2 and 2' regardless of any cutouts, bore holes, etc., present in leg sections 2 (see Figure I). Since the support surface may depend on penetration depth E, the support surface is determined for an assumed 0.3 mm penetration depth E of beads 6 into the planking. Particularly good results are achieved when the support surface is between 12% and 18%, preferably between 13% and 16%, of the lateral surface. 100351 The height of beads 6 is between 0.5 mm and 5 mm, in particular between I mm and 3 mm. In the specific embodiments shown, the heights of the beads of the C-shaped profile are identical. [00361 Beads 6 are convex in the region of the support surface as clearly visible in Figure 4. The radius at the top of the beads is between 0.6 m and 2.5 mm, preferably between 0.8 mm and 1.9 mm. Moreover, beads 6 are configured in such a way that width R of support surface sections 12 is between 1 mm and 3 mm, in particular between 1.3 mm and 2.1 mm, when penetration depth E of beads 6 into a planking is 0.3 mm. [0037] C-shaped profiles 1 are made of steel sheet having a thickness between 0.3 mm and 3 mm, in particular between 0.4 mm and 0.6 mm. The elastic modulus of the sheet metal is between 196 kN/mm2 and 216 kN/mm 2. The tensile strength of the sheet metal is between 270 MPa and 500 MPa. 6 [00381 Figure 5 shows how two identical C-shaped profiles I may be joined to form one rectangular profile. To facilitate this, both leg sections 2, 2' of a C-shaped profile I have different lengths, thus making it possible to interlace the two C-shaped profiles I with one another in a simple manner. In this process the shorter of the two leg sections 2 of one C-shaped profile I is situated on the inside of the longer of the two leg sections 2' of the other C-shaped profile I. The length of the shorter leg section 2 is dimensioned in such a way that this is able to be accommodated in the space resulting between fold 13 and inside 14 of bottom section 3. Inside 14 of bottom section 3 is the side of bottom section 3 facing leg sections 2, 2'. In particular, the length difference between leg sections 2 and 2' is double the sheet metal thickness or more. The length difference is preferably between two and four times the sheet metal thickness. [00391 Moreover, beads 6 of both leg sections 2, 2' are staggered with respect to one another in such a way that when the two C-shaped profiles I are joined to form the rectangular profile shown in Figure 5 the protrusions of beads 6 of shorter leg section 2 abut the recesses of beads 6 of longer leg section 2'. The distance of beads 6 of shorter leg section 2 and the distance of beads 6 of longer leg section 2' from bottom section 3 are different. [0040] Figure 6 shows a further specific embodiment of a C-shaped profile I of the invention installed in a partition 8. The structure of C-shaped profile I and partition 8 essentially match those in the embodiments shown in Figures 3 and 4. Reference is made to the description in this regard which also applies to Figure 6. Parts having the same function are provided with the same reference numeral. However, in the case of the specific embodiment shown in Figure 6, only one groove 4 which runs lengthwise along the C-shaped profile and is broader than the grooves shown in Figure 3 is provided in bottom section 3. 7 C -WRPob\DCC\AKW\324a7_ I DOC-24/0)2010 - 7a [0041] Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or 5 steps. [0042] The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as, an acknowledgement or admission or any form of suggestion that that prior publication (or 10 information derived from it) or known matter forms part of the common general knowledge in the field of endeavour to which this specification relates. [0043] Whilst the present invention has been hereinbefore described with reference to a particular embodiment, it will be understood that numerous variations and modifications 15 will be envisaged by persons skilled in art. All such variations and modifications should be considered to fall within the scope of the invention as broadly hereinbefore described and as hereinafter claimed.

List of reference numerals I C-shaped profile 2, 2' Leg section 3 Bottom section 4 Groove 5 Lateral surface 6 Bead 7 Knurling 8 Partition 9, 9', 9" Gypsum plasterboard 10 Connecting means II Insulating material 12 Support surface section 13 Fold 14 Inside 15 Putty L Length of the lateral surface B Width of the lateral surface E Penetration depth R Width of the support surface sections 8

Claims

1. A C-shaped sheet metal profile for providing sound insulation in a partition planked on both sides comprising: 5 a first leg section; a second leg section, and a bottom section connecting the first and second leg sections, the first and second leg sections forming lateral surfaces of the C-shaped profile and the first leg section having beads protruding outward therefrom in order to provide a 10 support surface for planking, the beads being configured in such a way that the support surface is greater than 5% of the lateral surface and less than 25% of the lateral surface and a penetration depth of the beads into the planking is 0.3 mm for effective sound insulation. 15

2. The C-shaped profile as recited in claim 1, wherein the beads are configured in such a way that the support surface is greater than 10% of the lateral surface and less than 20% of the lateral surface, when the penetration depth of the beads into the planking is 0.3 mm. 20

3. The C-shaped profile as recited in claim 2, wherein the beads are configured in such a way that the support is greater than 12% of the lateral surface and less than 18% of the lateral surface, when the penetration depth of the beads into the planking is 0.3 mm.

4. The C-shaped profile as recited in claim 1, wherein the beads are configured in 25 such a way that the support surface is greater than 13% of the lateral surface and less than 16% of the lateral surface when the penetration depth of the beads into the planking is 0.3 mm.

5. The C-shaped profile as recited in claim 1, wherein the first and second leg sections 30 and the bottom section are made from a single sheet of metal. C.\NRPotb\DCC\AKW\3204887 I DOC-24/)9/2010 - 10

6. The C-shaped profile as recited in claim 1, wherein the beads are oblong and run in the longitudinal direction of the C-shaped profile.

7. The C-shaped profile as recited in claim 1, wherein the beads run over an entire 5 length of the C-shaped profile.

8. The C-shaped profile as recited in claim 1, wherein each of the first and second leg sections has three to five parallel beads. 10

9. The C-shaped profile as recited in claim 1, wherein each of the first and second leg sections has four parallel beads.

10. The C-shaped profile as recited in claim 1, wherein a height of the beads is between 0.5 mm and 5 mm. 15

11. The C-shaped profile as recited in claim 1, wherein a height of the beads is between 1 mm and 3 mm.

12. The C-shaped profile as recited in claim 1, wherein at least one of the beads in a 20 region of the support surface is convex and a radius at a top of the bead is between 0.6 mm and 2.5 mm.

13. The C-shaped profile as recited in claim 1, wherein at least one of the beads in a region of the support surface is convex and radius at a top of the bead is between 0.8 mm 25 and 1.9 mm.

14. The C-shaped profile as recited in claim 1, wherein the beads are configured in such a way that a width of a section of the support surface in the region of one of the beads is between 1 mm and 3 mm, when the penetration depth of the beads into the planking is 30 0.3 mm. C :RP~orbl\DCC\AKWU204987_1 DOC-24A0/2010

15. The C-shaped profile as recited in claim 1, wherein the beads are configured in such a way that a width of a section of the support surface in the region of one of the beads is between 1.3 mm and 2.1 mm, when the penetration depth of the beads into the planking is 0.3 mm. 5

16. The C-shaped profile as recited in claim 1, wherein sheet metal of the C-shaped profile has knurling on at least a part of its surface.

17. The C-shaped profile as recited in claim 1, wherein a top side of the beads has a 10 protrusion and a bottom side has a recess.

18. The C-shaped profile as recited in claim 17, wherein a top side of the beads has a protrusion and a bottom side has a recess. 15

19. The C-shaped profile as recited in claim 18, wherein the beads of the first and second leg sections are staggered with respect to one another in such a way that when two C-shaped profiles can be joined to form a rectangular profile such that the shorter leg section of one C-shaped profile abuts the inside of the longer leg section of the other C shaped profile. 20

20. The C-shaped profile as recited in claim 1, wherein the thickness of a sheet metal is forming at least part of the first, second or bottom sections between 0.3 mm and 3 mm.

21. The C-shaped profile as recited in claim 1, wherein the thickness of the sheet metal 25 is forming at least part of the first, second or bottom sections between 0.4 mm and 0.6 mm.

22. A C-shaped sheet metal profile for providing sound insulation in a partition planked on both sides, substantially as hereinbefore described with reference to the accompanying figures. 30