AU2008202835C1 - Frame assembly for security screens - Google Patents
Frame assembly for security screens Download PDFInfo
- Publication number
- AU2008202835C1 AU2008202835C1 AU2008202835A AU2008202835A AU2008202835C1 AU 2008202835 C1 AU2008202835 C1 AU 2008202835C1 AU 2008202835 A AU2008202835 A AU 2008202835A AU 2008202835 A AU2008202835 A AU 2008202835A AU 2008202835 C1 AU2008202835 C1 AU 2008202835C1
- Authority
- AU
- Australia
- Prior art keywords
- security screen
- elongate
- frame
- members
- internal face
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/52—Devices affording protection against insects, e.g. fly screens; Mesh windows for other purposes
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/01—Grilles fixed to walls, doors, or windows; Grilles moving with doors or windows; Walls formed as grilles, e.g. claustra
Abstract
Fig. 1 A method of providing a frame 12 for the edge of a security screen 10 is performed by engaging an elongate insert 18 of plastics material with one side 16 of an elongate recess 15 in the frame by engaging shaped rib 20 in a corresponding keyhole 5 slot 19. The internal face of the insert 18 is provided with double sided adhesive tape 22 positioned such that the edge 1 of the security screen 10 may be fully inserted into the bottom of the recess 15 without contact with the adhesive face 21. The face of the security screen is then forced into contact with the adhesive face 21 by inserting a wedge member 25 having ratchet shaped teeth 27 which engage with 10 corresponding ratchet shaped teeth 24 on the adjacent face of the internal recess 15. The method of assembly is simple and able to be performed without the use of high force or the necessity to provide jigs or presses to engage the frame member with the edge of the security screen.
Description
- la FRAME ASSEMBLY FOR SECURITY SCREENS FIELD OF THE INVENTION [0001] This invention relates to a frame assembly for security screens and has been devised particularly though not solely for use with security screens covering window or door openings. BACKGROUND OF THE INVENTION [0002] There are many applications in building construction where it is desirable to provide a security screen to a window or door opening which will allow vision through the screen and the flow of air through the opening while providing security against intruders or for safety reasons and also providing a barrier to the passage of insects. [0003] Such screens are well known and typically formed from a woven mesh of stainless steel wire forming a fairly rigid mesh material. It is also however known to form security screens from other materials such as expanded metal mesh or punched sheet, or from other woven or expanded materials of non-metallic nature adapted to form an intruder resistant barrier while still permitting airflow and at least a degree of vision. [0004] In the past, various proposals have been made to securely mount the security mesh material into a peripheral frame for engagement with a window frame or as a frame for a hinged or sliding door, but most of these have inherent drawbacks. Some of the proposed methods require assembly using a clamping mechanism, typically a hydraulically powered ram mechanism, which is expensive to provide and does not typically permit assembly of the frame to the security screen at remote locations where the assembly apparatus or jigs may not be available. Other known methods, while providing a reasonable level of attachment of the peripheral frame to the security mesh material are prone to being prised apart under severe conditions such as an attack by a potential intruder.
-2 SUMMARY OF THE INVENTION [0005] In a first aspect the present invention provides a method of securing a security screen into a frame including the steps of: providing frame members for some or all edges of the security screen, each frame member having an elongate recess with first and second mutually facing internal faces, the recess being adapted to receive the corresponding edge of the security screen, the first internal face having retaining means arranged to retain an insert along the first internal face, and the second internal face having engaging means arranged to engage a wedge; providing an elongate insert for each frame member, adapted to interact with the retaining means and having a high friction face presentable to one face of the security screen adjacent the edge to be engaged with the frame member, wherein said high friction face is formed from a layer of double sided adhesive tape adhered to said elongate insert, wherein said retaining means includes a keyhole slot formed in the first internal face and wherein the elongate insert is provided with a correspondingly shaped elongate rib slidingly engageable with the keyhole slot to hold the insert in place within the elongate recess; providing at least one wedge member for each frame member, adapted to be wedged between the security screen and the second internal face of the recess and provided with engaging members arranged to engage the engaging means on the second internal face when the wedge member is so wedged such that removal of the wedge member is inhibited; inserting the elongate inserts into the elongate recesses in each corresponding frame member by sliding each rib into the corresponding keyhole slot to hold the inserts in place within the elongate recesses; offering up the frame members to the corresponding edges of the security screen such that the edges sit loosely within the corresponding recesses within the frame members; fastening adjacent frame members together at the corners of the security screen to form a frame, selectively either before or after the step of offering up the frame members to the edges of the security screen; and inserting the wedge members into each frame member between the security screen and the second internal face of the recess such that the wedge members are held in place by engagement of the engaging members on each wedge member with the engaging means on the second internal face, while wedging the face of the security screen adjacent the edge into contact with the high friction face of the adjacent elongate insert.
-3 [0006] In a second aspect the present invention provides a framed security screen for a window or door formed from a security screen mesh supported by a peripheral frame attached to the security mesh and assembled by providing frame members for some or all edges of the security screen, each frame member having an elongate recess with first and second mutually facing internal faces, the recess being adapted to receive the corresponding edge of the security screen, the first internal face having retaining means arranged to retain an insert along the first internal face, and the second internal face having engaging means arranged to engage a wedge; providing an elongate insert for each frame member, adapted to interact with the retaining means and having a high friction face presentable to one face of the security screen adjacent the edge to be engaged with the frame member, wherein said high friction face is formed from a layer of double sided adhesive tape adhered to said elongate insert, wherein said retaining means includes a keyhole slot formed in the first internal face and wherein the elongate insert is provided with a correspondingly shaped elongate rib slidingly engageable with the keyhole slot to hold the insert in place within the elongate recess; providing at least one wedge member for each frame member, adapted to be wedged between the security screen and the second internal face of the recess and provided with engaging members arranged to engage the engaging means on the second internal face when the wedge member is so wedged such that removal of the wedge member is inhibited; inserting the elongate inserts into the elongate recesses in each corresponding frame member by sliding each rib into the corresponding keyhole slot to hold the inserts in place within the elongate recesses; offering up the frame members to the corresponding edges of the security screen such that the edges sit loosely within the corresponding recesses within the frame members; fastening adjacent frame members together at the corners of the security screen to form a frame, selectively either before or after the step of offering up the frame members to the edges of the security screen; and inserting the wedge members into each frame member between the security screen and the second internal face of the recess such that the wedge members are held in place by engagement of the engaging members on each wedge member with the engaging means on the second internal face, while wedging the face of the security screen adjacent the edge into contact with the high friction face of the adjacent elongate insert.
-4 [0007] Preferably the elongate insert is formed from an insulating plastics material extending in use over most or all of the first internal face. [0008] Preferably the elongate insert incorporates an out turned edge positioned to sit on or adjacent the bottom of the elongate recess in use and provide a seat for the adjacent edge of the security screen. [0009] Preferably the face of the double sided adhesive tape away from the elongate insert is covered by a release strip which is removed before offering up the frame members to the corresponding edges of the security screen. [0010] Preferably the engaging members on the or each wedge member comprise a plurality of ratchet shaped teeth. [0011] Preferably the engaging means on the second internal face comprise a plurality of elongate ribs engageable with the ratchet shaped teeth. [0012] Preferably the elongate ribs are also configured as ratchet shaped teeth, engageable with the ratchet shaped teeth on the wedge members so as to inhibit removal of the adjacent wedge member once so engaged. [0013] Preferably the or each wedge member comprises an elongate wedge member which either alone or together with adjacent wedge members extends along substantially the same length as the adjacent elongate insert. [0014] Preferably the wedge members are inserted into each frame member between the security screen and the second internal face of the recess by pressing. [0015] In one form of the invention the step of pressing is performed by a mechanical pressing device. [0016] Alternatively the wedge members are inserted into each frame member between the security screen and the second internal face of the recess by knocking with an impact device such as a hammer.
-5 BRIEF DESCRIPTION OF THE DRAWINGS [0017] Notwithstanding any other forms that may fall within its scope, one preferred form of the invention will now be described by way of example only with reference to the accompanying drawings in which: [0018] Fig. 1 is an exploded cross-sectional view of the edge of a security screen and an adjacent frame according to the invention, before assembly; [0019] Fig. 2 is a similar view to Fig. 1 showing the frame loosely offered up to the edge of the security screen; and [0020] Fig. 3 is a similar view to Fig. 2 showing the engaging member according to the invention inserted to engage the edge of the security screen with the frame member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0021] The preferred form of the invention will now be described by way of example only with reference to a simple peripheral frame on the security screen suitable for use on a window but it will be appreciated that the invention can also be applied to more substantial or rigid frames suitable for use for example as a hinged or sliding door frame. [0022] The security screen 10 has a peripheral edge 11 which is to be engaged with a frame member typically formed by an aluminium extrusion and having a basic box section profile 12 from which extend flanges 13 and 14 defining an elongate recess 15 in the frame member. [0023] The elongate recess has a first internal face 16 and a second internal face 17 with the internal faces mutually facing one another and defining the recess 15 as can be clearly seen in Fig. 1. [0024] The frame is also provided with an elongate insert 18 typically extruded from an insulating plastics material such as PVC to the profile shown in Fig. 1 and which is held in place in the elongate recess 15 by way of retaining means in the form of a keyhole slot 19 formed in the first internal face 16 of the recess. The elongate insert 18 is provided with a -6 correspondingly shaped elongate rib 20 which is slidingly engageble with the elongate keyway 19 to hold the elongate insert in place within the recess 15. [0025] The elongate insert 18 has a high friction face 21 which may be provided in any known manner but in the preferred form of the invention is formed from a layer of double sided adhesive tape 22 which is adhered to the face of the elongate insert 18. The double sided adhesive tape is typically provided with a release strip (not shown) which is removed from the face 21 before inserting the edge 11 of the security screen 10 into the elongate recess 15 as will be described further below. [0026] The second internal face 17 of the recess 15 is provided with engaging means in the form of ribs, which are preferably defined as ratchet shaped teeth 24 extending along the length of the second internal face. [0027] There is also provided a wedge member 25, again typically extruded from an insulating plastics material such as semi-rigid PVC which may be provided in a number of discrete lengths or in a continuous length roughly corresponding in length to the adjacent elongate insert 18. [0028] One face 26 of the wedge member is substantially smooth so that it can slide against the face of the security screen 10 during assembly as will be described further below, and the opposite face is provided with engaging members in the form of ratchet shaped teeth 27 which are designed to engage with the teeth 24 on the second internal face 17 of the elongate recess 15 in the frame member. [0029] In order to assemble a frame around the periphery of the security screen 10, the frame members are firstly cut to length and typically mitred on the corners so that they may be connected together by any suitable known fastening method such as by the insertion of stakes across the mitred joints. Screws or corner punches or rivets are typically used to bind the frames to the stakes to form a rigid frame to the correct dimensions required around the security screen mesh (e.g the size of the windows to be screened). Before the corners are assembled, lengths of the elongate inserts 18 are cut to a corresponding length for each frame member and slidable engaged with the frame members by sliding the shaped rib 20 into the corresponding keyhole slot 19.
-7 [0030] It will be noted that the elongate insert is typically provided with an out turned edge 28 which is positioned to sit on or adjacent the bottom surface 29 of the elongate recess 15 and provide a seat for the edge 11 of the security screen 10 as will be seen below. [0031] Either before, or more typically after, inserting the elongate insert 18 into the recess 15, the cover strip is removed from the surface 21 of the double sided adhesive tape 22 to leave the adhesive surface exposed and forming a high friction face at 21. [0032] Depending on the nature of the assembly required, the frame member 12 is then loosely offered up to the edge portion of the security-screen 10 with the edge portion inserted into the elongate recess 15 as can be seen in Fig. 2 with the edge 11 against the out turned edge 28. It will be noted from Fig. 2 that this can be done without contacting the face of the security screen 10 with the high friction face 21 of the adhesive tape. [0033] Depending on the chosen method of assembly, four individual frame members can be separately offered up to the four sides of a rectangular security screen as described above and their corners then fastened together or various other sequences of assembly can be utilised at this point. For example, two adjacent frame members could be fastened together to form an L-shaped frame on two adjacent sides of the screen and then offered up to the corresponding edges of the screen while the remaining two edges are assembled in a similar manner and the final two corners of the frame fastened together once the frame members are inserted to the position shown in Fig. 2. [0034] Once the frame members are located around the periphery of the security screen 10 and the corners joined, they are then securely fastened in place to the edge portions of the screen 10 by inserting the wedge members 25 to the position shown in Fig. 3. This insertion may be performed in a number of different ways e.g. by pressing the wedge downwardly into the position shown in Fig. 3 either manually or by using a mechanical pressing device. Alternatively, it is a simple matter to tap the wedge members into place by knocking with an impact device such as a conventional hammer. It is a feature of the invention that the insertion of the wedge members in this manner does not require any significant force as the security screen 10 is not required to slide against the high friction face 21 at any point in the assembly of the frame but is simply pressed firmly against that high friction face by the insertion of the wedge member 25, to the position shown in Fig. 3.
-8 [0035] The wedge member is securely retained within the elongate recess 15 by engagement of the ratchet teeth 27 on the wedge member with the corresponding ratchet teeth 24 on the second internal face 17 of the elongate recess 15. [0036] Although it is preferred to have matching ratchet shaped teeth 27 and 24 on the wedge member 25 and the second internal face 17 respectively, it will be appreciated that the method of assembly will still function effectively with other configurations e.g. where the engaging means 24 are simple elongate ribs or similar. [0037] Once the wedge members 25 are securely in place as shown in Fig 3., the security screen 10 is forced firmly against the high friction face 21 where it is held firmly into the frame in such a manner as to resist removal by most known methods of attack on a security screen. [0038] This level of security is able to be provided using the method and frame according to the invention in a simple yet cost effective manner and one which does not require the use of any expensive assembly equipment such as hydraulic presses or other assembly jigs.
Claims (14)
1. A method of securing a security screen into a frame including the steps of: providing frame members for some or all edges of the security screen, each frame member having an elongate recess with first and second mutually facing internal faces, the recess being adapted to receive the corresponding edge of the security screen, the first internal face having retaining means arranged to retain an insert along the first internal face, and the second internal face having engaging means arranged to engage a wedge; providing an elongate insert for each frame member, adapted to interact with the retaining means and having a high friction face presentable to one face of the security screen adjacent the edge to be engaged with the frame member, wherein said high friction face is formed from a layer of double sided adhesive tape adhered to said elongate insert, wherein said retaining means includes a keyhole slot formed in the first internal face and wherein the elongate insert is provided with a correspondingly shaped elongate rib slidingly engageable with the keyhole slot to hold the elongate insert in place within the elongate recess; providing at least one wedge member for each frame member, adapted to be wedged between the security screen and the second internal face of the recess and provided with engaging members arranged to engage the engaging means on the second internal face when the wedge member is so wedged such that removal of the wedge member is inhibited; inserting the elongate inserts into the elongate recesses in each corresponding frame member by sliding each rib into the corresponding keyhole slot to hold the inserts in place within the elongate recesses; offering up the frame members to the corresponding edges of the security screen such that the edges sit loosely within the corresponding recesses within the frame members; fastening adjacent frame members together at the corners of the security screen to form a frame, selectively either before or after the step of offering up the frame members to the edges of the security screen; and inserting the wedge members into each frame member between the security screen and the second internal face of the recess such that the wedge members are held in place by engagement of the engaging members on each wedge member with the engaging means on the second internal face, while wedging the face of the security screen adjacent the edge into contact with the high friction face of the adjacent elongate insert. -10
2. A framed security screen for a window or door formed from a security screen mesh supported by a peripheral frame attached to the security mesh and assembled by providing frame members for some or all edges of the security screen, each frame member having an elongate recess with first and second mutually facing internal faces, the recess being adapted to receive the corresponding edge of the security screen, the first internal face having retaining means arranged to retain an insert along the first internal face, and the second internal face having engaging means arranged to engage a wedge; providing an elongate insert for each frame member, adapted to interact with the retaining means and having a high friction face presentable to one face of the security screen adjacent the edge to be engaged with the frame member, wherein said high friction face is formed from a layer of double sided adhesive tape adhered to said elongate insert, wherein said retaining means includes a keyhole slot formed in the first internal face and wherein the elongate insert is provided with a correspondingly shaped elongate rib slidingly engageable with the keyhole slot to hold the elongate insert in place within the elongate recess; providing at least one wedge member for each frame member, adapted to be wedged between the security screen and the second internal face of the recess and provided with engaging members arranged to engage the engaging means on the second internal face when the wedge member is so wedged such that removal of the wedge member is inhibited; inserting the elongate inserts into the elongate recesses in each corresponding frame member by sliding each rib into the corresponding keyhole slot to hold the inserts in place within the elongate recesses; offering up the frame members to the corresponding edges of the security screen such that the edges sit loosely within the corresponding recesses within the frame members; fastening adjacent frame members together at the corners of the security screen to form a frame, selectively either before or after the step of offering up the frame members to the edges of the security screen; and inserting the wedge members into each frame member between the security screen and the second internal face of the recess such that the wedge members are held in place by engagement of the engaging members on each wedge member with the engaging means on the second internal face, while wedging the face of the security screen adjacent the edge into contact with the high friction face of the adjacent elongate insert.
3. A method or a framed security screen as claimed in either claim 1 or claim 2 wherein the elongate insert is formed from an insulating plastics material extending in use over most or all of the first internal face. - 11
4. A method or a framed security screen as claimed in claim 3 wherein the elongate insert incorporates an out turned edge positioned to sit on or adjacent the bottom of the elongate recess in use and provide a seat for the adjacent edge of the security screen.
5. A method or a framed security screen as claimed in any one of the preceding claims, wherein the face of the double sided adhesive tape away from the elongate insert is covered by a release strip which is removed before offering up the frame members to the corresponding edges of the security screen.
6. A method or a framed security screen as claimed in any one of the preceding claims wherein the engaging members on the or each wedge member comprise a plurality of ratchet shaped teeth.
7. A method or a framed security screen as claimed in claim 6 wherein the engaging means on the second internal face comprise a plurality of elongate ribs engageable with the ratchet shaped teeth.
8. A method or a framed security screen as claimed in claim 7 wherein the elongate ribs are also configured as ratchet shaped teeth, engageable with the ratchet shaped teeth on the wedge members so as to inhibit removal of the adjacent wedge member once so engaged.
9. A method or a framed security screen as claimed in any one of claims 6 to 8 wherein the or each wedge member comprises an elongate wedge member which either alone or together with adjacent wedge members extends along substantially the same length as the adjacent elongate insert.
10. A method as claimed in claim 1 wherein the wedge members are inserted into each frame member between the security screen and the second internal face of the recess by pressing.
11. A method as claimed in claim 10 wherein the step of pressing is performed by a mechanical pressing device. - 12
12. A method as claimed in claim 1 wherein the wedge members are inserted into each frame member between the security screen and the second internal face of the recess by knocking with an impact device such as a hammer.
13. A method of securing a security screen into a frame when performed substantially as described herein with reference to the accompanying drawings.
14. A framed security screen for a window or door when constructed and arranged substantially as described herein with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2008202835A AU2008202835C1 (en) | 2007-06-26 | 2008-06-26 | Frame assembly for security screens |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2007903431A AU2007903431A0 (en) | 2007-06-26 | Frame assembly for security screens | |
| AU2007903431 | 2007-06-26 | ||
| AU2008202835A AU2008202835C1 (en) | 2007-06-26 | 2008-06-26 | Frame assembly for security screens |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| AU2008202835A1 AU2008202835A1 (en) | 2009-01-15 |
| AU2008202835B2 AU2008202835B2 (en) | 2013-08-29 |
| AU2008202835C1 true AU2008202835C1 (en) | 2014-04-03 |
Family
ID=40263120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2008202835A Ceased AU2008202835C1 (en) | 2007-06-26 | 2008-06-26 | Frame assembly for security screens |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2008202835C1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2009248473B2 (en) * | 2008-12-16 | 2015-09-03 | James Reid | A fastening assembly |
| US9284770B2 (en) | 2014-03-19 | 2016-03-15 | C.R. Laurence Co., Inc. | Adjustable screen tensioning system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005201582A1 (en) * | 2004-04-16 | 2005-11-03 | Bond, Norma Beatrice Carmen | A security screen frame |
| US20060201350A1 (en) * | 2004-06-15 | 2006-09-14 | Veivers Bradley M | Frame assembly |
| WO2007056789A1 (en) * | 2005-11-16 | 2007-05-24 | Dier Corporation As Trustee For The Reid Family Superannuation Trust | New frame assemblies for security screens |
-
2008
- 2008-06-26 AU AU2008202835A patent/AU2008202835C1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005201582A1 (en) * | 2004-04-16 | 2005-11-03 | Bond, Norma Beatrice Carmen | A security screen frame |
| US20060201350A1 (en) * | 2004-06-15 | 2006-09-14 | Veivers Bradley M | Frame assembly |
| WO2007056789A1 (en) * | 2005-11-16 | 2007-05-24 | Dier Corporation As Trustee For The Reid Family Superannuation Trust | New frame assemblies for security screens |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2008202835B2 (en) | 2013-08-29 |
| AU2008202835A1 (en) | 2009-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DA2 | Applications for amendment section 104 |
Free format text: THE NATURE OF THE AMENDMENT IS AS SHOWN IN THE STATEMENT(S) FILED 18 NOV 2013 . |
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| DA3 | Amendments made section 104 |
Free format text: THE NATURE OF THE AMENDMENT IS AS SHOWN IN THE STATEMENT(S) FILED 18 NOV 2013 |
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| FGA | Letters patent sealed or granted (standard patent) | ||
| HB | Alteration of name in register |
Owner name: COMMANDEX PTY LTD Free format text: FORMER NAME(S): SECUREVIEW (AUSTRALIA) PTY LTD |
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| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |