1. Field of the Invention
The present invention pertains to the construction field and, more particularly, to an adjustable door, window or the like frame assembly for use in building construction. Even more specifically, the invention is directed to fixedly mounting a versatile frame assembly in a framed building opening in a simple, adjustable manner while establishing a high fire rating.
2. Discussion of the Prior Art
In the construction industry, it is common to establish internal wall openings for doors, windows, closable pass-throughs and the like. As there actually exists a range in the size of the openings, specifically variations in at least both lateral and thickness dimensions, pre-manufactured frames that vary in size are available. To minimize the number of frame configurations which need to be produced, it is known to produce a frame, such as a door frame, which is adjustable in thickness. Such an adjustable frame assembly is particularly common in connection with metal door frames which can be used in residential construction but are more typically found in commercial building construction. For example, a typical adjustable metal door frame assembly will include a pair of hinge jamb components, a pair of striker jamb components and a pair of header components, with the pairs being joined through respective tongue and groove connections. More specifically, each of the grooved jamb and header components are fixed along one side of the doorway and then the other jamb and header components are slid into position from the other side of the doorway, with a tongue portion of each of the other jamb and header components being received in a respective groove of the fixed jamb and header components until flange or facer portions of the sliding components abut the wall. With this arrangement, the tongue and groove connections permit a single door frame assembly to be used with walls which vary in thickness.
Certainly, it is desired to mount the fixed frame components in a manner which will establish a rigid and sturdy assembly, particularly in the case of metal door frames given the fact that such metal door frames are typically used to support relatively heavy metal doors. In the past, numerous mounting configurations have been proposed in an attempt to achieve a sturdy and robust assembly, while attempting to provide for a relatively easy mounting sequence for the door assembly. Regardless of the availability of various mounting arrangements, there still exists a need for an enhanced mounting system for the fixed components of an adjustable metal frame assembly, particularly the fixed hinge jamb component of a metal door frame assembly.
The present invention is directed to an adjustable frame assembly and, more particularly, to a mounting arrangement for one or more of the fixed components of a multi-component adjustable frame assembly. In accordance with a preferred embodiment of the invention, the frame assembly is used to mount a door such that the overall door frame assembly includes hinge jamb, striker jamb and header components, with each of these components being formed from two separate members, i.e., a fixed member and a slidingly interconnected member, which enable the adjustable door frame assembly to be used with walls having varying thicknesses. However, the overall adjustable frame assembly of the invention can extend to other types of openings, such as internal windows, pass-through zones and the like. One particular aspect of the present invention is concerned with the manner in which the fixed members of a door frame assembly are mounted and, most importantly, the mounting of at least the fixed member of the hinge jamb component.
In accordance with the adjustable frame assembly of the invention, a rigid and sturdy frame construction is preferably established utilizing sets of brackets to secure one or more fixed frame components to one side of an opening, such as a doorway. In a first embodiment of the invention, each set includes two brackets. A first one of the brackets includes one portion which slips between a stud defining the opening and an adjacent wallboard and another portion which extends along the stud and is mechanically secured thereto. The second of the two brackets is fixed to or integrally formed with a respective fixed frame component. The two brackets are interconnected to indirectly fix the frame component to the wall.
Once all the fixed frame members are secured, such as in a corresponding manner to the fixed hinge jamb member described, the other frame members can be readily slid into place and preferably joined by a friction fit. In further accordance with the present invention, an optional spacer plate arrangement can be installed between the first and second brackets in order to accommodate varying opening widths for the overall frame assembly. Therefore, with this arrangement, the adjustable frame assembly can accommodate door or other opening variations in both thickness and width. Even with the simply, yet enhanced mounting arrangement, the construction of the overall frame assembly enables a high fire rating to be obtained.
Additional objects, features and advantages of the present invention will become more readily apparent from the following detailed description of preferred embodiments when taken in conjunction with the drawings wherein like reference numerals refer to corresponding parts in the several views.
As will become more fully evident below, the adjustable frame assembly of the invention can be employed to frame out various different construction openings, such as door, window, pass-through and the like type openings commonly found in construction settings. For exemplary purposes, a detailed description will be made in setting forth preferred embodiments for an adjustable door frame assembly. However, the basic principles described can also be applied in connection with other types of openings found in the construction industry.
With initial reference to
As depicted, fixed hinge jamb component 25 includes a facer portion 27 that terminates in an in-turned edge 29. Again, as known in the art, facer portion 27 is adapted to be positioned against one wall covering 15 upon mounting of door frame assembly 2, while an inside section 32 of hinge jamb component 25 extends adjacent wall stud 10 within door opening 5. Along inside section 32 is defined a recessed, door receiving portion 33 which leads to a door abutment or stop portion 35. Door abutment portion 35 leads to a channel or groove 38 defined by an in-turned portion 39 leading to an out-turned portion 40 that terminates at a lip 41. As shown, lip 41 includes a cut-out section 43 that is established juxtaposed a hinge mounting zone 47 formed in door rebate portion 33. As should be readily apparent, hinge mounting zone 47 includes a plurality of openings (not separately labeled) and is adapted to mount one end of a hinge for a door associated with door frame assembly 2, with the door also not being shown in these figures for simplicity.
At this point, it should be readily apparent that hinge jamb component 25 will include a plurality of vertically spaced hinge mounting zones 47. In accordance with the invention, sets of brackets are employed to secure hinge jamb component 25 to wall stud 10 at door opening 5. Below is provided a detailed description of one set of the brackets associated with hinge mounting zone 47 depicted in
In a first embodiment of the invention, each set of brackets includes two brackets 52 and 53. In accordance with this preferred embodiment, the first bracket 52 includes an elongated main plate portion 58 from which projects two flange portions 60 and 61. In one preferred construction, the first bracket 52 is formed by bending a metal plate into a generally L-shaped configuration to establish main plate portion 58 and flange portion 60, with flange portion 60 extending substantially perpendicular to main plate portion 58. The second flange portion 61 is provided at a position spaced along main plate portion 58 from first flange portion 60, with second flange portion 61 also extending substantially perpendicular from main plate portion 58, but in a direction opposite from first flange portion 60. As shown, second flange portion 61 is actually part of an angled bracket section including a leg 63 which is welded or otherwise affixed to main plate portion 58 at a position spaced from first flange portion 60 by a section 65 of main plate portion 58. Therefore, with this configuration, the first and second flange portions 60 and 61 are arranged in spaced, generally parallel planes. The main plate portion 58 of first bracket 52 is formed with a plurality of spaced apertures 67, 68 and the second flange portion 61 is also formed with a plurality of spaced apertures 70, 71.
The second bracket 53 is fixed to, such as by welding, or integrally formed with the respective fixed frame component 25. In accordance with a preferred embodiment of the invention, second bracket 53 is made of metal and bent to assume a generally Z-shaped cross-section. In any case, second bracket 53 is formed with at least first and second leg portions 77 and 78, with the first leg portion 77 extending along frame component 25 and second leg portion 78 projecting from frame component 25, preferably at a substantially perpendicular angle. In the most preferred form of the invention, the second leg portion 78 has an associated length which is longer than a corresponding length of the second flange portion 61 of first bracket 52. As shown in its most preferred form, second bracket 53 includes a third leg 79 including spaced slots 81 and 82. In this form, second bracket 53 is preferably welded to fixed door jamb component 25 along third leg 79.
First bracket 52 is configured to be mounted to wall stud 10 defining door opening 5, with first flange portion 60 being slipped between an edge of wall stud 10 and the adjacent wall covering 14. Once first flange portion 60 is appropriately positioned, main plate portion 58 of first bracket 52 will abut and extend along an exposed face of stud 10. At this point, holes (not shown) are drilled in stud 10 in alignment with the plurality of apertures 67 and 68 in main plate portion 58 of first bracket 52 and mechanical fasteners, such as self-tapping sheet metal screws 85 and 86 (or wood screws for wood stud applications), are used to fixedly secure first bracket 52 to stud 10. Again, it should be understood that multiple sets of brackets are utilized in the mounting of the door frame components such that one or more additional first brackets would be mounted at this stage in a corresponding manner. In a preferred form of the invention, at least three sets of brackets are employed in connection with mounting hinge jamb component 25, with the sets of brackets being provided at the level of each door hinge.
Once the desired number of first brackets are mounted, the respective fixed frame component 25 is put in place, with facer portion 27 of fixed frame component 25 abutting wall 15 defining door opening 5. Once fixed frame component 25 is in position, the second leg portion 78 of each of the second brackets 53 will be arranged behind the second flange portion 61 of a respective first bracket 52. The spacing between the second leg portion 78 and the second flange portion 61 will vary depending on the thickness of wall 10. Regardless, holes (not labeled) are drilled through second leg portion 78 in alignment with the plurality of apertures 70 and 71 in second flange portion 61. Thereafter, adjustable connectors, shown in the form of elongated screws 90 and 91, are inserted into the plurality of apertures 70 and 71 and threaded into second leg portion 78. Without a threaded attachment to second flange portion 61, tightening of screws 90 and 91 causes fixed frame component 25 to be drawn against the surface of wall 15, thereby adjusting a distance between first flange portion 60 and facer portion 27 in order to securely attaching hinge jamb component 25 to wall 10. Once all the fixed frame members are secured, preferably in a corresponding manner to the fixed hinge jamb member 25 as described, the other frame members can be slid into place and joined by the tongue and groove connections in a manner known in the art.
In further accordance with the present invention as shown in
With particular reference to
As clearly illustrated, second flange portion 161 is provided at a position spaced along main plate portion 158 from first flange portion 161, with second flange portion 161 also extending substantially perpendicular from main plate portion 158, but in a direction opposite from first flange portion 160. As clearly shown in
As clearly shown in these figures, second flange portion 161 is preferably bent along line 180 relative to leg 163, with leg 163 including cut lines, such as that indicated at 182, in order to establish projecting tabs 184 and 185 on second flange portion 161. To accommodate tabs 184 and 185, main plate portion 158 is formed with opposing cut-outs 186 and 187 between apertures 167, 168 and 167′, 168′ respectively. When assembling the overall bracket 152, leg 163 is positioned on main plate portion 158 with tabs 184 and 185 projecting into cut-outs 186 and 187. In addition, openings 190 and 191 formed in leg 163 are aligned with apertures 167′ and 168′ respectively. At this point, it is preferable to weld, such as by spot welding, leg 163 to main plate portion 158 to achieve the assembly shown in
With this overall arrangement, the reversing of either bracket 52 or bracket 152 can enable the overall jamb assembly to be firmly mounted at each of wall coverings 14 and 15. The number of mounting brackets arrangements on each side can certainly vary with the size of the opening and the degree of rigidity desired, with the most preferred embodiment of a door assembly employing at least three brackets on the hinge jamb side, with two of the brackets located directly at the hinge as shown in
As indicated above, door abutment portion 35 defines a channel 38 between in-turned portion 39 and out-turned portion 40. In order to complete the overall assembly, a facer member 225 is provided as shown in
As indicated above, spacer plate 95 functions to accommodate varying widths of openings in which the adjustable frame assembly of the invention can be mounted. Although it is possible to use different size spacer plates 95 to accommodate for varying widths, another embodiment of the invention employs a spacer plate 195 having holes 99′ and 100′ in the form of slots as shown in
Further illustrated in
With the above construction, it should be readily apparent that the adjustable frame assembly of the invention can be assembled in an efficient and sturdy manner, while accommodating door opening variations in both thickness and width. Again, although one preferred embodiment of the invention is associated with an adjustable door frame assembly, the overall invention is directed to an adjustable frame assembly for various building openings such that, instead of defining an opening for a door, the assembly could be readily utilized within a building to establish an interior window or other closable opening. Basically, the mounting of the frame components remain the same between the various different uses, although the actual configuration of the frame components could change. For instance, in the case of framing an interior window opening, the region at door abutment or stop portion 35 would be reconfigured to accept and retain one or more panes of glass. Importantly, the invention provides an extremely effective way to establish a fire rated building opening while utilizing a frame assembly that is easy to install and which can be readily adjusted to accommodate varying thicknesses of the walls in which the openings are formed. Therefore, although described with reference to preferred embodiments of the invention, it should be readily understood that various changes and/or modifications can be made to the invention without departing from the spirit thereof. Instead, the invention is only intended to be limited by the scope of the following claims.
The present invention claims the benefit of U.S. Provisional Patent Application Ser. No. 61/113,798 entitled “Adjustable Frame Assembly for Fire Rated Building Opening” filed Nov. 12, 2008.
Number | Date | Country | |
---|---|---|---|
61113798 | Nov 2008 | US |