AU2017204156A1

AU2017204156A1 - Door jamb assembly

Info

Publication number: AU2017204156A1
Application number: AU2017204156A
Authority: AU
Inventors: Gavin John Horsfall
Original assignee: Altro Building Systems Pty Ltd
Current assignee: Altro Building Systems Pty Ltd
Priority date: 2016-06-17
Filing date: 2017-06-19
Publication date: 2018-01-18
Anticipated expiration: 2037-06-19
Also published as: AU2017204156B2

Abstract

Abstract A door jamb assembly 10 for a door opening having a front face and first and second opposing sides, the doorjamb assembly comprising: a first frame section 20 having a first main portion 21 and a first wall attachment portion 22 extending in a generally perpendicular direction to the first main portion, the first wall attachment portion being attachable to the first side and the first main panel extending at least partly across the front face; a second frame section 30 having a second main portion 31 and a second wall attachment portion 32 extending in a generally perpendicular direction to the second main portion, the second wall attachment portion being attachable to the second side and the second main portion extending at least partly across the front face, the second frame section further comprising a raised strike section 35 extending from the second main portion, the strike section having a locking channel 62, a central joiner section 40 having a third main portion 41 and a locking formation 42, wherein when the locking formation is locked onto the locking channel, the third main portion forms a receiving slot 84 with the strike section, wherein the first main portion is at least partly received in the receiving slot in use. 21 79 73 62 640 42 31 3 22 (a) 30 SO 20 ,40 2262, 42 20 (b) (c)

Description

DOOR JAMB ASSEMBLY Field of the Invention [1] The present invention relates to a doorjamb assembly.

Background of the Invention [2] A door frame assembly typically includes several parts including a head jamb (also called header or head stile), side jambs (also called legs or side stiles), a sill or threshold, and door stops (also called strike jambs). In most cases, the strikes are formed in the side jambs as stepped portions therein. The door opening is finished with a moulding called an architrave which covers the junction between the doorframe assembly and the adjacent walls. The door frame assembly comes in different depths to suit different wall thicknesses.

[3] A particular problem with the current doorjamb assemblies is the lengthy time it takes to install and the unsatisfactory appearance of some finished products.

[4] The present invention seeks to overcome or substantially ameliorate at least some of the deficiencies of the prior art, or to at least provide an alternative.

[5] It is to be understood that, if any prior art information is referred to herein, such reference does not constitute an admission that the information forms part of the common general knowledge in the art, in Australia or any other country.

Summary of the Invention [6] According to a first aspect, the present invention provides a doorjamb assembly for a door opening having a front face and first and second opposing sides, the doorjamb assembly comprising: a first frame section having a first main portion and a first wall attachment portion extending in a generally perpendicular direction to the first main portion, the first wall attachment portion being attachable to the first side and the first main portion extending at least partly across the front face; a second frame section having a second main portion and a second wall attachment portion extending in a generally perpendicular direction to the second main portion, the second wall attachment portion being attachable to the second side and the second main portion extending at least partly across the front face, the second frame section further comprising a raised strike section extending from the second main portion, the strike section having a locking channel, a central joiner section having a third main portion and a locking formation, wherein when the locking formation is locked onto the locking channel, the third main portion forms a receiving slot with the strike section, wherein the first main portion is at least partly received in the receiving slot in use.

[7] In one embodiment, the first frame section, the second frame section and the central joiner section are all elongated extrusions and have consistent cross sections along their lengths.

[8] In another embodiment, the first to third main portions are generally flat rectangular panels.

[9] In another embodiment, the first and second wall attachment portions comprise a plurality of apertures formed therein.

[10] In another embodiment, the strike section extends from the second main portion in a direction opposite to that of the second wall attachment portion.

[11] In another embodiment, the locking channel comprises a generally upside down U-shaped portion.

[12] In another embodiment, the strike section comprises a generally rectangular crosssection return portion, wherein the return portion forms the receiving slot with the third main portion.

[13] In another embodiment, the strike section generally comprises a C-shaped channel having an additional middle tab extending from an internal surface of the front section to form the locking channel.

[14] In another embodiment, the strike section comprises a return tab extending inwardly from a distal edge thereof.

[15] In another embodiment, the return tab is thus parallel to the second main portion and spaced upwardly therefrom by a distance substantially equal to the thickness of the second main portion.

[16] In another embodiment, the middle tab comprises and an internal surface of the strike section comprises lock protrusions to form the locking channel therebetween.

[17] In another embodiment, the locking formation comprises first and second locking tabs which extend from a common face of the third main portion.

[18] Other aspects of the invention are also disclosed.

Brief Description of the Drawings [19] Notwithstanding any other forms which may fall within the scope of the present invention, preferred embodiments of the present invention will now be described, by way of examples only, with reference to the accompanying drawings in which: [20] Fig. 1 shows a portion of a door jamb assembly in accordance with a preferred embodiment of the present invention, where (a) is a cross-section view, (b) is a top perspective view and (c) is a bottom perspective view; [21] Fig. 2 shows an exploded view of the doorjamb assembly portion of Figure 1, where (a) is a cross-section view, (b) is a top perspective view and (c) is a bottom perspective view.

Description of Embodiments [22] It should be noted in the following description that like or the same reference numerals in different embodiments denote the same or similar features.

[23] Figures 1 and 2 show a doorjamb assembly 10 according to a preferred embodiment of the present invention. The doorjamb assembly 10 is for mounting to a door opening of a building structure to form at least one of the side jambs or head jamb. The door opening typically comprises a vertical door frame stud and first and second wall panels mounted to side faces of the frame stud and terminating at the frame stud. The doorjamb assembly 10 is to be mounted to extend from external faces of the wall panels and across a front face of the frame stud.

[24] The doorjamb assembly 10 comprises a first frame section 20, a second frame section 30, and a central joiner section 40, which are all elongated extrusions and thus having consistent cross sections along their lengths. Only small length portions of these sections are shown in the drawings for illustration purposes.

[25] The first frame section comprises a first main portion 21 and a first wall attachment portion 22 extending in a generally perpendicular direction from a side edge of the first main portion 21. The first main portion 21 is a flat rectangular panel. The first attachment portion 22 is also a flat rectangular panel and comprises a plurality of apertures 24 formed therein, which allows attachment of fasteners therethrough to attach to the first wall panel, as well as providing a decorative effect.

[26] The second frame section 30 comprises a second main portion 31 and a second wall attachment portion 32 extending in a generally perpendicular direction from a first side edge of the second main portion 31. The second main portion 31 is also a flat rectangular panel. The second attachment portion 32 is also a flat rectangular panel and comprises a plurality of apertures 34 formed therein, which allows attachment of fasteners therethrough to attach to the first wall panel, as well as providing a decorative effect.

[27] The second frame section 30 additionally comprises a strike section 35 extending from an opposite second side edge of the second main portion 31. The strike section 35 extends from the second main portion 31 in a direction opposite to that of the wall attachment portion 32. The strike section 35 comprises a locking channel 62 and a return section 64. In cross-section, the locking channel 62 comprises a generally upside down U-shaped portion adjacent the second side edge 36, and the return section 64 comprises a generally rectangular cross-section portion.

[28] In detail, in cross-section, the strike section 35 generally comprises a C-shaped channel having an additional middle tab 76 and a return tab 79. The C-shaped channel comprises a first tab 71 extending perpendicularly from the second side edge in a direction opposite to the wall attachment portion 32, a front section 72 extending perpendicularly from a distal edge of the first tab 71 in a direction away from the second main portion 31 (and thus parallel and spaced from the second main portion 31), and a second tab 73 extending perpendicularly from a distal edge of the front section 72 in the same direction as the wall attachment portion 32.

[29] The second tab 73 extends to a position short of alignment with the second main portion 31. The return tab 79 extends perpendicularly from the distal edge of the second tab 73 in a direction towards the second main portion 31. The return tab 79 is thus parallel to the second main portion 31 but spaced upwardly therefrom, by a distance substantially equal to the thickness of the second main portion 31.

[30] The middle tab 76 extends from an internal surface of the front section 72, spaced and parallel to the first tab 71. The middle tab 76 is co-extensive as the second tab 73. Facing surfaces of the middle tab 76 and the first tab 71 comprise lock protrusions 78 directed towards each other. The middle tab 76 and the first tab 71 thus form the locking channel 62 therebetween.

[31] The central joiner section 40 comprises a third main portion 41 and a locking formation 42 formed adjacent and extending along one side edge of the third main portion 41. The third main portion 41 is also a flat rectangular panel. The locking formation 42 comprises first and second locking tabs 43a and 43b which extend generally parallel to each other from a common face of the third main portion 41. The first locking tab 43a extends from a side edge of the third main portion 41 with the second locking tab 43b spaced inwardly from the first locking tab 43a. The locking tabs 43 each have an outwardly facing locking recess 46 adapted to receive the lock protrusions 78. The spacing between the locking tabs 43 is dimensioned to fit the locking formation 42 into the locking channel 62.

[32] When the locking formation 42 is inserted and locked into the locking channel 62, the third main portion 41 is positioned to be a substantially aligned extension of the second main portion 31. The third main portion 41 is also parallel and spaced from the return tab 79. The third main portion 41 forms a receiving slot 84 with the return tab 79. The receiving slot 84 receives therein the first main portion 21 in use, preferably in a tight fit.

[33] In use, the locking formation 42 is inserted and locked into the locking channel 62, which locks the central joiner section 40 to the second frame section 30. The locking formation 42 can also be crimped in place with a crimping tool. The first main portion 21 is inserted into the receiving slot 84, and the first main portion is movable in the receiving slot 84 towards and away from the middle tab 76. This allows the distance between the first and second wall attachment portions 22 and 32 to be adjustable to cover different wall/frame stud widths, and maintain an overlap or join across the front face of the frame stud.

[34] The second frame section 30 with the central joiner section 40 locked thereto is initially mounted to the second wall panel via the second wall attachment portion 32. The main panel 21 is then inserted into the receiving slot 84 and the first wall attachment portion 22 of the first frame section 20 is mounted to the first wall panel.

[35] The main portions 21,31 and 41 thus extend across and covers the front face of the frame stud and provides a good finish, and the strike section 35 provides the required door strike.

[36] Whilst preferred embodiments of the present invention have been described, it will be apparent to skilled persons that modifications can be made to the embodiments described.

[37] The doorjamb assembly can be used for one or two side jambs and/or the head jamb.

[38] The first main portion 21 can also have a wider width which will allow the doorjamb assembly to accommodate larger wall thicknesses.

Claims

Claims The claims defining the invention are as follows:

1. A door jamb assembly for a door opening having a front face and first and second opposing sides, the doorjamb assembly comprising: a first frame section having a first main portion and a first wall attachment portion extending in a generally perpendicular direction to the first main portion, the first wall attachment portion being attachable to the first side and the first main portion extending at least partly across the front face; a second frame section having a second main portion and a second wall attachment portion extending in a generally perpendicular direction to the second main portion, the second wall attachment portion being attachable to the second side and the second main portion extending at least partly across the front face, the second frame section further comprising a raised strike section extending from the second main portion, the strike section having a locking channel, a central joiner section having a third main portion and a locking formation, wherein when the locking formation is locked onto the locking channel, the third main portion forms a receiving slot with the strike section, wherein the first main portion is at least partly received in the receiving slot in use.
2. The doorjamb assembly of claim 1 wherein the first frame section, the second frame section and the central joiner section are all elongated extrusions and have consistent cross sections along their lengths.
3. The doorjamb assembly of claim 1 wherein the first to third main portions are generally flat rectangular panels.
4. The door jamb assembly of claim 1 wherein the first and second wall attachment portions comprise a plurality of apertures formed therein.
5. The doorjamb assembly of claim 1 wherein the strike section extends from the second main portion in a direction opposite to that of the second wall attachment portion.
6. The doorjamb assembly of claim 1 wherein the locking channel comprises a generally upside down U-shaped portion.
7. The doorjamb assembly of claim 1 wherein the strike section comprises a generally rectangular cross-section return portion, wherein the return portion forms the receiving slot with the third main portion.
8. The doorjamb assembly of claim 1 wherein the strike section generally comprises a C-shaped channel having an additional middle tab extending from an internal surface of the front section to form the locking channel.
9. The doorjamb assembly of claim 8 wherein the strike section comprises a return tab extending inwardly from a distal edge thereof.
10. The doorjamb assembly of claim 9 wherein the return tab is thus parallel to the second main portion and spaced upwardly therefrom by a distance substantially equal to the thickness of the second main portion.
11. The doorjamb assembly of claim 8 wherein the middle tab comprises and an internal surface of the strike section comprises lock protrusions to form the locking channel therebetween.
12. The doorjamb assembly of claim 1 wherein the locking formation comprises first and second locking tabs which extend from a common face of the third main portion.