WO2002008538A1 - Metal roof truss - Google Patents

Metal roof truss Download PDF

Info

Publication number
WO2002008538A1
WO2002008538A1 PCT/CA2001/001044 CA0101044W WO0208538A1 WO 2002008538 A1 WO2002008538 A1 WO 2002008538A1 CA 0101044 W CA0101044 W CA 0101044W WO 0208538 A1 WO0208538 A1 WO 0208538A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
base member
members
clinch
frame
Prior art date
Application number
PCT/CA2001/001044
Other languages
French (fr)
Inventor
Edward E. Embury
Original Assignee
Embury Edward E
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Embury Edward E filed Critical Embury Edward E
Priority to AU2001275626A priority Critical patent/AU2001275626A1/en
Publication of WO2002008538A1 publication Critical patent/WO2002008538A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/04—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces

Definitions

  • This invention relates to metal rood trusses which comprise a framework mountable on top of the walls of a building to support a roof.
  • a metal roof truss has a frame formed by metal frame members and a series of metal intermediate members secured at opposite ends to frame members by clinch locks, each clinch lock having been formed by forcing metal of one member through another member with consequent deformation of the other member to form a rivet-like projection.
  • a metal roof trass in accordance with the invention can provide a very strong roof support which is easy to fabricate.
  • the frame may be of generally triangular shape and include a base member, a first side member extending from one end of the base member in an upwardly inclined direction, a second side member extending from the opposite end of the base member in an upwardly inclined direction to form an apex with the first side member, the intermediate members extending between the base member and a side member, each member having a C channel section with a bottom portion, side walls and inwardly extending flanges, the C channel sections of the base member and side members being directed in opposite directions to the C channel sections of the intermediate members, with the bottom portion of each intermediate member abutting the bottom portions of the base member and the side member and with the clinch locks being formed between abutting bottom portions.
  • Fig. 1 is a perspective view of a metal roof truss in accordance with the invention
  • Fig. 2 is a rear view thereof
  • Fig. 3 is a front view thereof
  • Fig. 4 is a view on an enlarged scale of the rear of one of the connections of the roof trass as indicated by the circle 3 in Fig. 2,
  • Fig. 5 is a similar view of the front of the connection as indicated by the circle 5 in Fig. 2
  • Fig. 6 is a sectional view of a clinch lock taken along the line 6-6 of Fig. 4, and
  • Fig. 7 is a sectional view of a clinch lock taken along the line 7-7 of Fig. 4.
  • a metal roof truss in accordance with one embodiment of the invention has a main frame of generally triangular shape including a metal base member 12, a first side member 14 extending from one end of the base member 12 in an upwardly inclined direction, and a second side member 16 extending from the opposite end of the base member 12 in an upwardly inclined direction to meet the side member 14 at an apex 18.
  • the roof trass also has a series of metal intermediate members 20 extending between the base member 12 and one. of the side members 14, 16.
  • the base member 12, side members 14, 16 and intermediate members 20 each have a C channel section, namely with a bottom portion 22, side walls 24, 26 and inwardly extending flanges 28, 30 as shown in Figs. 4 and 5.
  • the C-channel sections of the base member 12 and side members 14, 16 are directed in opposite directions to the C channel sections of the intermediate members 20 so that the bottom portion 22 of the C channel section of an intermediate member 20 abuts the bottom portion 22 of the C channel section of the base member 12 and side member 14 or 16.
  • the bottom portion 22 of each intermediate member 20 is connected at one end to the bottom portion 22 of the base member 12 and at the other end to the bottom portion 22 of a side member 14 or 16 by clinch locks 40. In a clinch lock 40, as shown particularly in Fig.
  • the metal of the intermediate member 20 is forced through the frame member 16 to form a rivet-like projection 48.
  • a transversely extending strengthening member 50 of C channel section may be provided at a connection as shown in Fig. 4 so that each clinch lock 40 holds three members together, see Fig. 7.
  • a metal roof trass in accordance with the invention provides an adequately strong structure which can be readily manufactured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

A metal roof truss has a frame formed by metal frame members and a series of metal intermediate members secured at opposite ends to frame members by clinch locks. Each clinch lock is formed by forcing metal of one member through another member with consequent deformation of the other member to form a rivet-like projection.

Description

METAL ROOF TRUSS
BACKGROUND OF THE INVENTION This invention relates to metal rood trusses which comprise a framework mountable on top of the walls of a building to support a roof.
Previously, pre-engineered and prefabricated roof trusses have conventionally been made of wood. Although attempts have been made to provide roof trusses made of metal, for one reason or another, metal roof trusses have not proved to be very successful in practice.
It is therefore an object of the present invention to provide an improved metal roof truss.
SUMMARY OF THE INVENTION
According to the present invention, a metal roof truss has a frame formed by metal frame members and a series of metal intermediate members secured at opposite ends to frame members by clinch locks, each clinch lock having been formed by forcing metal of one member through another member with consequent deformation of the other member to form a rivet-like projection.
A metal roof trass in accordance with the invention can provide a very strong roof support which is easy to fabricate.
The frame may be of generally triangular shape and include a base member, a first side member extending from one end of the base member in an upwardly inclined direction, a second side member extending from the opposite end of the base member in an upwardly inclined direction to form an apex with the first side member, the intermediate members extending between the base member and a side member, each member having a C channel section with a bottom portion, side walls and inwardly extending flanges, the C channel sections of the base member and side members being directed in opposite directions to the C channel sections of the intermediate members, with the bottom portion of each intermediate member abutting the bottom portions of the base member and the side member and with the clinch locks being formed between abutting bottom portions.
DESCRIPTION OF THE DRAWINGS One embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, which:
Fig. 1 is a perspective view of a metal roof truss in accordance with the invention,
Fig. 2 is a rear view thereof,
Fig. 3 is a front view thereof,
Fig. 4 is a view on an enlarged scale of the rear of one of the connections of the roof trass as indicated by the circle 3 in Fig. 2,
Fig. 5 is a similar view of the front of the connection as indicated by the circle 5 in Fig. 2, Fig. 6 is a sectional view of a clinch lock taken along the line 6-6 of Fig. 4, and
Fig. 7 is a sectional view of a clinch lock taken along the line 7-7 of Fig. 4.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, a metal roof truss in accordance with one embodiment of the invention has a main frame of generally triangular shape including a metal base member 12, a first side member 14 extending from one end of the base member 12 in an upwardly inclined direction, and a second side member 16 extending from the opposite end of the base member 12 in an upwardly inclined direction to meet the side member 14 at an apex 18. The roof trass also has a series of metal intermediate members 20 extending between the base member 12 and one. of the side members 14, 16.
The base member 12, side members 14, 16 and intermediate members 20 each have a C channel section, namely with a bottom portion 22, side walls 24, 26 and inwardly extending flanges 28, 30 as shown in Figs. 4 and 5. The C-channel sections of the base member 12 and side members 14, 16 are directed in opposite directions to the C channel sections of the intermediate members 20 so that the bottom portion 22 of the C channel section of an intermediate member 20 abuts the bottom portion 22 of the C channel section of the base member 12 and side member 14 or 16. The bottom portion 22 of each intermediate member 20 is connected at one end to the bottom portion 22 of the base member 12 and at the other end to the bottom portion 22 of a side member 14 or 16 by clinch locks 40. In a clinch lock 40, as shown particularly in Fig. 6, the metal of the intermediate member 20 is forced through the frame member 16 to form a rivet-like projection 48. If desired, a transversely extending strengthening member 50 of C channel section may be provided at a connection as shown in Fig. 4 so that each clinch lock 40 holds three members together, see Fig. 7.
A metal roof trass in accordance with the invention provides an adequately strong structure which can be readily manufactured. Other advantages of the invention will now be readily apparent to a person skilled in the art from the foregoing description of a preferred embodiment. Other embodiments of the invention will also now be readily apparent, the scope of the invention being defined in the appended claims.

Claims

1. A metal roof truss having a frame formed by metal frame members and a series of metal intermediate members secured at opposite ends to frame members by clinch locks, each clinch lock having been formed by forcing metal of one member through another member with consequent deformation of the other member to form a rivet-like projection.
2. A metal roof truss according to claim 1 wherein the frame is of generally triangular shape and include a base member, a first side member extending from one end of the base member in an upwardly inclined direction, a second side member extending from the opposite end of the base member in an upwardly inclined direction to form an apex with the first side member, the intermediate members extending between the base member and a side member, each member having a C channel section with a bottom portion, side walls and inwardly extending flanges, the C channel sections of the base member and side members being directed in opposite directions to the C channel sections of the intermediate members, with the bottom portion of each intermediate member abutting the bottom portions of the base member and the side member and with the clinch locks being formed between abutting bottom portions.
PCT/CA2001/001044 2000-07-19 2001-07-17 Metal roof truss WO2002008538A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001275626A AU2001275626A1 (en) 2000-07-19 2001-07-17 Metal roof truss

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21913500P 2000-07-19 2000-07-19
US60/219,135 2000-07-19

Publications (1)

Publication Number Publication Date
WO2002008538A1 true WO2002008538A1 (en) 2002-01-31

Family

ID=22818019

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2001/001044 WO2002008538A1 (en) 2000-07-19 2001-07-17 Metal roof truss

Country Status (3)

Country Link
US (1) US20020020133A1 (en)
AU (1) AU2001275626A1 (en)
WO (1) WO2002008538A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003008722A1 (en) * 2001-07-19 2003-01-30 Weeks Peacock Quality Homes Pty. Ltd. Truss
US7513085B2 (en) * 2003-10-24 2009-04-07 Nucon Steel Corporation Metal truss
EP1702507B1 (en) * 2003-12-18 2012-02-08 Takehisa Ode Structure used as roof assembly of greenhouse, roof assembly of greenhouse, greenhouse, and framework construction method for greenhouse
US20070151200A1 (en) * 2006-01-03 2007-07-05 Madray Steven G Folding roof truss
AU2007271735A1 (en) * 2006-07-07 2008-01-10 Bluescope Steel Limited Joining sheet metal products
AU2009100554A4 (en) * 2009-06-09 2009-09-10 Illinois Tool Works Inc. Construction of Trusses for Roofs and Floors
TWM500193U (en) * 2014-09-30 2015-05-01 Charles Cheung Triangle support assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996005384A1 (en) * 1994-08-16 1996-02-22 Byntech Pty. Ltd. Building truss
US5535569A (en) * 1992-03-06 1996-07-16 Bhp Steel (Jla) Pty, Ltd. Sheet metal structural member and frames incorporating same
US6167674B1 (en) * 1998-06-01 2001-01-02 Lakdas Nanayakkara Light-gauge truss framing element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5535569A (en) * 1992-03-06 1996-07-16 Bhp Steel (Jla) Pty, Ltd. Sheet metal structural member and frames incorporating same
WO1996005384A1 (en) * 1994-08-16 1996-02-22 Byntech Pty. Ltd. Building truss
US6167674B1 (en) * 1998-06-01 2001-01-02 Lakdas Nanayakkara Light-gauge truss framing element

Also Published As

Publication number Publication date
US20020020133A1 (en) 2002-02-21
AU2001275626A1 (en) 2002-02-05

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