CA2639201A1 - Plug connector for retaining hollow sections - Google Patents
Plug connector for retaining hollow sections Download PDFInfo
- Publication number
- CA2639201A1 CA2639201A1 CA 2639201 CA2639201A CA2639201A1 CA 2639201 A1 CA2639201 A1 CA 2639201A1 CA 2639201 CA2639201 CA 2639201 CA 2639201 A CA2639201 A CA 2639201A CA 2639201 A1 CA2639201 A1 CA 2639201A1
- Authority
- CA
- Canada
- Prior art keywords
- connector
- hollow section
- retaining elements
- retaining
- corners
- 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.)
- Abandoned
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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
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
- E06B3/663—Elements for spacing panes
- E06B3/667—Connectors therefor
Abstract
A plug connector for hollow sections for spacer frames or bar sections of insulating glass panes, the connector having a longitudinal middle web and two parallel side walls joined to the middle web to provide a pair of parallel longitudinal corners, and a plurality of retaining elements intermittently spaced at or immediately adjacent the corners in the middle web; the retaining elements comprising (i) first retaining elements so shaped as to allow entry and retention of a first desired portion of the connector into a first portion of a hollow section in a first direction but prevent withdrawal of the first desired portion from the first portion of the hollow section in the reverse direction to the first direction and (ii) second retaining elements so-shaped as to allow entry and retention of a second desired portion of the connector into a second portion of a hollow section in the reverse direction but prevent withdrawal of the second desired portion from the second portion of the hollow section in the first direction. The present invention provides plug connectors that act in the non-critical vertical direction, intermittently at the corners with the solid side walls of the spacer tube, or immediately adjacent thereto in the center web. Deflections of the spacer tube are, thus, advantageously, only in the vertical direction and of a very small magnitude. Lateral deflections are eliminated, and the multiple window glazings can be efficiently sealed with a minimum of sealant.
Description
PLUG CONNECTOR FOR RETAINING HOLLOW SECTIONS
FIELD OF THE INVENTION
This invention relates to plug connectors as inserts for retaining hollow sections, especially for perimeter spacer frames or bar sections of window insulating glass panels, and to process of manufacturing said connectors; and to spacer frames having said connectors retained within said window.
BACKGROUND OF THE INVENTION
Windows with multiple pane glazings are used in buildings where improved temperature and noise insulation are desired. Part of the assembly of the multiple glazing window is a spacer frame around the full perimeter within the window frame which holds the panes apart and parallel to each other, at a fixed gap. Sealant is applied to form a single multi-pane unit.
Generally, the spacer frame is a hollow, rectangular section spacer tube, made of extruded or roll formed aluminum. The spacer is generally filled with desiccant material to absorb any moisture that is captured during the manufacturing process and, thus, to prevent internal fogging of the window at low temperatures. It is critical that flatness of the spacer tube be maintained precisely when the multi-pane glazing unit is sealed to provide an effectively sealed unit.
In the manufacturing process and in the performance of the window, it is an advantage to have the initial free ends of the spacer tube subsequently connected and retained to each other to provide a fully continuous peripheral frame. So-called "plug-in", preferably, linear connectors are used to provide this connection. One version of a linear connector is U-shaped in cross-section formed sheet metal article that fits into each abutting hollow end of the spacer tube. In one type of plug connector described in United States Patent No.
6,862,859 B2 to Max Kronenburg - issued March 8, 2005, lateral retaining barbs are formed in the outer periphery of the U`legs and retain the connector to the spacer frame ends.
Although the lateral retaining barbs are effective retaining devices, they, typically, functionally compromise the spacer tube into which they are inserted in that the lateral retaining barbs cause outward deformation of the spacer tube, with a resulting local increase in thickness of the tube. This disadvantage is made worse by the fact that this outward deflection acts on the planes of the spacer tube which, typically, carry vent perforations and extrusion or roll forming seams. In consequence, in order to effectively seal the multi-pane glazing, the spacer tube strength and, therefore, its cost must be increased to reduce the degree of local deformation and/or the amount of sealant increased to accommodate the deformation at increased cost.
Further drawbacks to the use of such lateral retaining barbed connectors is particularly seen in the manufacturing process and in the performance of the sealed window unit. This is in consequence that the linear connection plugs are required to have a certain bending and torsional stiffness. Forming the retaining barbs from the periphery of the plug connector compromises both of these physical characteristics. These must be compensated for by increasing the thickness of the sheet metal used in the forming of the connector.
It will be understood by the person skilled in the art that the spacer tube must be made of very uniform overall lateral dimension to ensure efficient sealing against each of the window glazings. Sealing is critical to prevent moisture seeping in and causing internal fogging. The more uniform the lateral spacer dimension is kept, the less sealant is required to ensure a full seal. Further, window spacer tubes are manufactured, typically, with ventilation perforations punched in the inner surface and with a longitudinal seam along the center of the outer surface. These features makes the spacer tube weak in the lateral direction.
Most existing connectors have retaining barbs that act laterally on the spacer tube, which in combination with the weakness of the spacer tube in the lateral direction, results in outward lateral deflection of the spacer tube. There are also existing connectors which act vertically in the centre of the spacer tube. This results in an inward lateral deflection of the spacer tube side walls. Both of these unsatisfactory situations must be addressed by increasing the amount and, accordingly, cost of sealant used.
United States Patent No. 5,560,731 - issued October 1, 1996 to Max Kronenberg discloses U-shaped plug connectors optionally having a center web with retaining elements formed as resilient, bent-out lugs which claw into the inside, walls of the hollow frame section to oppose the extraction of the connector. The essential resilient character of the
FIELD OF THE INVENTION
This invention relates to plug connectors as inserts for retaining hollow sections, especially for perimeter spacer frames or bar sections of window insulating glass panels, and to process of manufacturing said connectors; and to spacer frames having said connectors retained within said window.
BACKGROUND OF THE INVENTION
Windows with multiple pane glazings are used in buildings where improved temperature and noise insulation are desired. Part of the assembly of the multiple glazing window is a spacer frame around the full perimeter within the window frame which holds the panes apart and parallel to each other, at a fixed gap. Sealant is applied to form a single multi-pane unit.
Generally, the spacer frame is a hollow, rectangular section spacer tube, made of extruded or roll formed aluminum. The spacer is generally filled with desiccant material to absorb any moisture that is captured during the manufacturing process and, thus, to prevent internal fogging of the window at low temperatures. It is critical that flatness of the spacer tube be maintained precisely when the multi-pane glazing unit is sealed to provide an effectively sealed unit.
In the manufacturing process and in the performance of the window, it is an advantage to have the initial free ends of the spacer tube subsequently connected and retained to each other to provide a fully continuous peripheral frame. So-called "plug-in", preferably, linear connectors are used to provide this connection. One version of a linear connector is U-shaped in cross-section formed sheet metal article that fits into each abutting hollow end of the spacer tube. In one type of plug connector described in United States Patent No.
6,862,859 B2 to Max Kronenburg - issued March 8, 2005, lateral retaining barbs are formed in the outer periphery of the U`legs and retain the connector to the spacer frame ends.
Although the lateral retaining barbs are effective retaining devices, they, typically, functionally compromise the spacer tube into which they are inserted in that the lateral retaining barbs cause outward deformation of the spacer tube, with a resulting local increase in thickness of the tube. This disadvantage is made worse by the fact that this outward deflection acts on the planes of the spacer tube which, typically, carry vent perforations and extrusion or roll forming seams. In consequence, in order to effectively seal the multi-pane glazing, the spacer tube strength and, therefore, its cost must be increased to reduce the degree of local deformation and/or the amount of sealant increased to accommodate the deformation at increased cost.
Further drawbacks to the use of such lateral retaining barbed connectors is particularly seen in the manufacturing process and in the performance of the sealed window unit. This is in consequence that the linear connection plugs are required to have a certain bending and torsional stiffness. Forming the retaining barbs from the periphery of the plug connector compromises both of these physical characteristics. These must be compensated for by increasing the thickness of the sheet metal used in the forming of the connector.
It will be understood by the person skilled in the art that the spacer tube must be made of very uniform overall lateral dimension to ensure efficient sealing against each of the window glazings. Sealing is critical to prevent moisture seeping in and causing internal fogging. The more uniform the lateral spacer dimension is kept, the less sealant is required to ensure a full seal. Further, window spacer tubes are manufactured, typically, with ventilation perforations punched in the inner surface and with a longitudinal seam along the center of the outer surface. These features makes the spacer tube weak in the lateral direction.
Most existing connectors have retaining barbs that act laterally on the spacer tube, which in combination with the weakness of the spacer tube in the lateral direction, results in outward lateral deflection of the spacer tube. There are also existing connectors which act vertically in the centre of the spacer tube. This results in an inward lateral deflection of the spacer tube side walls. Both of these unsatisfactory situations must be addressed by increasing the amount and, accordingly, cost of sealant used.
United States Patent No. 5,560,731 - issued October 1, 1996 to Max Kronenberg discloses U-shaped plug connectors optionally having a center web with retaining elements formed as resilient, bent-out lugs which claw into the inside, walls of the hollow frame section to oppose the extraction of the connector. The essential resilient character of the
2 retaining elements is to compensate for the inside tolerances and provide a firm fit with the hollow sections. USP 5,560,731 is silent on the location of the retaining elements in the center web. Further, alternative connectors having no center web retaining elements or with also side web retaining elements are described. USP 5,560,731 is silent on the desirability of having no centrally located retaining elements on the central web as to prevent side pressures on the side webs.
There is, therefore, a need for an improved connector that does not suffer from the aforesaid disadvantages.
SUMMARY OF THE INVENTION
The present invention provides plug connectors that act in the non-critical vertical direction, intermittently at the corners with the solid side walls of the spacer tube, or immediately adjacent thereto in the center web. Deflections of the spacer tube are, thus, advantageously, only in the vertical direction and of a very small magnitude.
Lateral deflections are eliminated, and the multiple window glazings can be efficiently sealed with a minimum of sealant.
The connectors according to the present invention do not have the retaining elements on the side walls and, thus, are so oriented as to not act in the critical direction on the spacer tube side walls. The absence of side pressure on the critical side walls results in the retention of flatness for pane sealing. It also provides for reduced buckling by retention of alignment of spacer ends from uninterrupted external profile maintenance. The connectors provide a lower cost method for keeping dimensional control and offer a positive lock behind the pairs of longitudinally arranged perforations in those spacers having such features.
Further, the manufacturing functionality of the connector according to the invention is improved over that for connectors having retaining means formed out of the side wall lower edge.
It is an object of the present invention to provide a connector for retaining hollow sections that does not functionally compromise the sections without the need for enhanced section thickness or amount of sealant.
In a further object, the invention provides multi-space perimeter spacer frames retained with said connectors.
There is, therefore, a need for an improved connector that does not suffer from the aforesaid disadvantages.
SUMMARY OF THE INVENTION
The present invention provides plug connectors that act in the non-critical vertical direction, intermittently at the corners with the solid side walls of the spacer tube, or immediately adjacent thereto in the center web. Deflections of the spacer tube are, thus, advantageously, only in the vertical direction and of a very small magnitude.
Lateral deflections are eliminated, and the multiple window glazings can be efficiently sealed with a minimum of sealant.
The connectors according to the present invention do not have the retaining elements on the side walls and, thus, are so oriented as to not act in the critical direction on the spacer tube side walls. The absence of side pressure on the critical side walls results in the retention of flatness for pane sealing. It also provides for reduced buckling by retention of alignment of spacer ends from uninterrupted external profile maintenance. The connectors provide a lower cost method for keeping dimensional control and offer a positive lock behind the pairs of longitudinally arranged perforations in those spacers having such features.
Further, the manufacturing functionality of the connector according to the invention is improved over that for connectors having retaining means formed out of the side wall lower edge.
It is an object of the present invention to provide a connector for retaining hollow sections that does not functionally compromise the sections without the need for enhanced section thickness or amount of sealant.
In a further object, the invention provides multi-space perimeter spacer frames retained with said connectors.
3 In yet a further object, the invention provides a method of manufacturing said connectors.
Accordingly, in one aspect the invention provides a plug connector for hollow sections for spacer frames or bar sections of insulating glass panes, said connectors comprising a longitudinal middle web and two parallel side walls joined to said middle web to provide a pair of parallel longitudinal corners, and a plurality of retaining means intermittently spaced at or immediately adjacent said corners in said middle web;
said retaining means comprising (i) first retaining elements so shaped as to allow entry and retention of a first desired portion of said connector into a first portion of a hollow section in a first direction but prevent withdrawal of said first desired portion from said first portion of said hollow section in the reverse direction to said first direction and (ii) second retaining elements so-shaped as to allow entry and retention of a second desired portion of said connector into a second portion of a hollow section in said reverse direction but prevent withdrawal of said second desired portion from said second portion of said hollow section in said first direction.
Preferably, a connector as hereinabove defined has each of said first and second retaining elements comprising an inclined place portion and retaining edge portion.
Preferably, the inclined plane portion and retaining edge portion comprise a non-resilient body.
Preferably the retaining elements are located at intermittent portions of the aforesaid corners.
In alternative embodiments, a connector as hereinabove defined has the retaining elements located at a distance selected from 0.5mm to 3mm from the corners.
Most preferably, a connector as hereinabove defined has said web integrally formed with said side walls.
Preferably, a connector as hereinabove defined is wherein each of said side walls has a hollow section stop to limit entry of said insert into said hollow section.
Connectors according to the invention in the form of linear embodiments within and for joining two hollow sections are preferred. Corner connectors according to the invention for use in corners formed by the joining of two hollow sections to form a corner are also readily manufactured and used.
Accordingly, in one aspect the invention provides a plug connector for hollow sections for spacer frames or bar sections of insulating glass panes, said connectors comprising a longitudinal middle web and two parallel side walls joined to said middle web to provide a pair of parallel longitudinal corners, and a plurality of retaining means intermittently spaced at or immediately adjacent said corners in said middle web;
said retaining means comprising (i) first retaining elements so shaped as to allow entry and retention of a first desired portion of said connector into a first portion of a hollow section in a first direction but prevent withdrawal of said first desired portion from said first portion of said hollow section in the reverse direction to said first direction and (ii) second retaining elements so-shaped as to allow entry and retention of a second desired portion of said connector into a second portion of a hollow section in said reverse direction but prevent withdrawal of said second desired portion from said second portion of said hollow section in said first direction.
Preferably, a connector as hereinabove defined has each of said first and second retaining elements comprising an inclined place portion and retaining edge portion.
Preferably, the inclined plane portion and retaining edge portion comprise a non-resilient body.
Preferably the retaining elements are located at intermittent portions of the aforesaid corners.
In alternative embodiments, a connector as hereinabove defined has the retaining elements located at a distance selected from 0.5mm to 3mm from the corners.
Most preferably, a connector as hereinabove defined has said web integrally formed with said side walls.
Preferably, a connector as hereinabove defined is wherein each of said side walls has a hollow section stop to limit entry of said insert into said hollow section.
Connectors according to the invention in the form of linear embodiments within and for joining two hollow sections are preferred. Corner connectors according to the invention for use in corners formed by the joining of two hollow sections to form a corner are also readily manufactured and used.
4 Connectors formed of any suitable materials may be used. Preferred material is steel.
In a further aspect, the invention provides a spacer frame assembly comprising (a) a spacer frame having an inner wall having an inner surface defining a rectangle and an opposing outer wall spaced from said inner wall by a pair of side walls, and wherein said inner and outer walls and said side walls define a hollow section; and (b) a plug connector as hereinabove defined within said spacer frame.
The middle web is preferably in abutment adjacent the inner spacer wall, but the connector reverse position may be used wherein the middle web is in abutment with the outer spacer wall.
In preferred embodiments the assembly as hereinabove defined has said inner spacer frame wall provided with at least a pair of parallel longitudinal series of perforations.
In preferred embodiments the connectors of the present invention are formed of a material and so shaped as to minimize the amount of resilient flexibility experienced by the retaining elements.
BRIEF DESCRIPTION OF THE DRAWINGS
In order that the invention may be better understood, preferred embodiments will now be described by way of example only with reference to the accompanying drawings, wherein Fig. 1 is a perspective diagrammatic view of a linear plug connector according to the invention;
Fig. 2 is an enlarged view of a retaining element shown in Fig. 1;
Fig. 3 is a diagrammatic perspective view of a linear connector located within hollow sections of spacer frames according to the invention;
Fig. 4 is a diagrammatic perspective view of a part of an enlarged linear connector, within a hollow section, in part, according to the invention;
Fig. 5 is a diagrammatic perspective view of a corner connector according to the invention;
Fig. 6 is a diagrammatic perspective view of a corner connector, located within a hollow section of spacer frame according to the invention;
and wherein the same numerals denote like parts.
In a further aspect, the invention provides a spacer frame assembly comprising (a) a spacer frame having an inner wall having an inner surface defining a rectangle and an opposing outer wall spaced from said inner wall by a pair of side walls, and wherein said inner and outer walls and said side walls define a hollow section; and (b) a plug connector as hereinabove defined within said spacer frame.
The middle web is preferably in abutment adjacent the inner spacer wall, but the connector reverse position may be used wherein the middle web is in abutment with the outer spacer wall.
In preferred embodiments the assembly as hereinabove defined has said inner spacer frame wall provided with at least a pair of parallel longitudinal series of perforations.
In preferred embodiments the connectors of the present invention are formed of a material and so shaped as to minimize the amount of resilient flexibility experienced by the retaining elements.
BRIEF DESCRIPTION OF THE DRAWINGS
In order that the invention may be better understood, preferred embodiments will now be described by way of example only with reference to the accompanying drawings, wherein Fig. 1 is a perspective diagrammatic view of a linear plug connector according to the invention;
Fig. 2 is an enlarged view of a retaining element shown in Fig. 1;
Fig. 3 is a diagrammatic perspective view of a linear connector located within hollow sections of spacer frames according to the invention;
Fig. 4 is a diagrammatic perspective view of a part of an enlarged linear connector, within a hollow section, in part, according to the invention;
Fig. 5 is a diagrammatic perspective view of a corner connector according to the invention;
Fig. 6 is a diagrammatic perspective view of a corner connector, located within a hollow section of spacer frame according to the invention;
and wherein the same numerals denote like parts.
5 DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Fig. 1 shows generally as 10 steel linear connector having a longitudinal middle web 12 and parallel side walls 14, 16 integrally formed with web 12 to provide parallel longitudinal corners 18, 20, respectively.
Intermittent along middle web 12 at a first portion 23 at corners 18, 20 is a first series of retaining elements 22 and a second series 24 at a second portion 25 of connector 10. Each of retaining elements 22, 24 has an inclined face portion 26, 28, respectively.
Each side wall 14, 16 has an insertion stop 30, 32, respectively, to prevent insertion of connector 10 past its mid-point 34 inside spacer frame 46.
Connector 10 has a plurality of stiffening ribs 38, 40, 42 and 44 suitably located, one adjacent each end and at central portions.
Figs. 5 and 6 illustrate corner connectors according to the invention within and without hollow frame sections, respectively.
In operation, with reference also to Fig. 3, when first portion 23 is inserted into hollow section 46 in direction A, inner wall 48 of section 46 rides over, with deformation, over elements 22 adjacent corners 18, 20 until stop 30 reaches side walls of section 46.
Connector 10 is held in abutment by retaining elements 22 acting on inner wall of section 46.
When second portion 25 of connector 10 is inserted into hollow section 50 in direction B, inner wall 52 of section 50 rides over, with deformation, over elements 24 adjacent corners 18, 20 until stop 32 reaches side walls of section 50 to retain connector 10 in abutment with section 50.
Retaining elements 22, 24 are located adjacent corners 18, 20.
In the above embodiments, with reference also to Figs. 4 and 6 retaining elements 22 and 24 of center web 12 adjacent corners 18,20 abut inner walls 48, 52 of hollow sections at a distance of about 2-3 mm laterally across inner walls 48, 52 and absent from the area "C"
between perforation series 54, 56.
The linear connector is preferably manufactured from a coil of flat steel by it being fed to a series of stamping dies where the shape is created by cutting off the unwanted material around the perimeter of the connector. A narrow feeder strip is left to keep the connector joined to the one ahead, and the one behind. A second station is also a cutting station, which punches out material to create the interior cut-outs. At a third station, a press
Fig. 1 shows generally as 10 steel linear connector having a longitudinal middle web 12 and parallel side walls 14, 16 integrally formed with web 12 to provide parallel longitudinal corners 18, 20, respectively.
Intermittent along middle web 12 at a first portion 23 at corners 18, 20 is a first series of retaining elements 22 and a second series 24 at a second portion 25 of connector 10. Each of retaining elements 22, 24 has an inclined face portion 26, 28, respectively.
Each side wall 14, 16 has an insertion stop 30, 32, respectively, to prevent insertion of connector 10 past its mid-point 34 inside spacer frame 46.
Connector 10 has a plurality of stiffening ribs 38, 40, 42 and 44 suitably located, one adjacent each end and at central portions.
Figs. 5 and 6 illustrate corner connectors according to the invention within and without hollow frame sections, respectively.
In operation, with reference also to Fig. 3, when first portion 23 is inserted into hollow section 46 in direction A, inner wall 48 of section 46 rides over, with deformation, over elements 22 adjacent corners 18, 20 until stop 30 reaches side walls of section 46.
Connector 10 is held in abutment by retaining elements 22 acting on inner wall of section 46.
When second portion 25 of connector 10 is inserted into hollow section 50 in direction B, inner wall 52 of section 50 rides over, with deformation, over elements 24 adjacent corners 18, 20 until stop 32 reaches side walls of section 50 to retain connector 10 in abutment with section 50.
Retaining elements 22, 24 are located adjacent corners 18, 20.
In the above embodiments, with reference also to Figs. 4 and 6 retaining elements 22 and 24 of center web 12 adjacent corners 18,20 abut inner walls 48, 52 of hollow sections at a distance of about 2-3 mm laterally across inner walls 48, 52 and absent from the area "C"
between perforation series 54, 56.
The linear connector is preferably manufactured from a coil of flat steel by it being fed to a series of stamping dies where the shape is created by cutting off the unwanted material around the perimeter of the connector. A narrow feeder strip is left to keep the connector joined to the one ahead, and the one behind. A second station is also a cutting station, which punches out material to create the interior cut-outs. At a third station, a press
6 bends the areas of the retaining features, the insertion stops and the lead-in bevels to their final angles. At a next station, a press bends the walls to their final orientation and forms the stiffening ribs in the upper web of the connector. At a final station, the part is fully separated from the steel coil by trimming off the feeder strip.
Although this disclosure has described and illustrated certain preferred embodiments of the invention, it is to be understood that the invention is not restricted to those particular embodiments. Rather, the invention includes all embodiments which are functional or mechanical equivalence of the specific embodiments and features that have been described and illustrated.
Although this disclosure has described and illustrated certain preferred embodiments of the invention, it is to be understood that the invention is not restricted to those particular embodiments. Rather, the invention includes all embodiments which are functional or mechanical equivalence of the specific embodiments and features that have been described and illustrated.
7
Claims (12)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A plug connector for hollow sections for spacer frames or bar sections of insulating glass panes, said connector comprising a longitudinal middle web and two parallel side walls joined to said middle web to provide a pair of parallel longitudinal corners, and a plurality of retaining means intermittently spaced at or immediately adjacent said corners in said middle web;
said retaining means comprising (i) first retaining elements so shaped as to allow entry and retention of a first desired portion of said connector into a first portion of a hollow section in a first direction but prevent withdrawal of said first desired portion from said first portion of said hollow section in the reverse direction to said first direction and (ii) second retaining elements so-shaped as to allow entry and retention of a second desired portion of said connector into a second portion of a hollow section in said reverse direction but prevent withdrawal of said second desired portion from said second portion of said hollow section in said first direction.
said retaining means comprising (i) first retaining elements so shaped as to allow entry and retention of a first desired portion of said connector into a first portion of a hollow section in a first direction but prevent withdrawal of said first desired portion from said first portion of said hollow section in the reverse direction to said first direction and (ii) second retaining elements so-shaped as to allow entry and retention of a second desired portion of said connector into a second portion of a hollow section in said reverse direction but prevent withdrawal of said second desired portion from said second portion of said hollow section in said first direction.
2. A connector as claimed in claim 1 wherein each of said first and second retaining elements comprises an inclined plane portion and retaining edge portion.
3. A connector as claimed in claim 1 or claim 2 wherein said retaining elements are located at a distance selected from 0.5mm to 3mm from said corners.
4. A connector as claimed in any one of claims 1 to 3 wherein said web is integrally formed with said side walls.
5. A connector as claimed in any one of claims 1 to 4 wherein each of said side walls has a hollow section stop to limit entry of said insert into said hollow section.
6. A linear connector as claimed in any one of claims 1 to 5.
7. A corner connector as claimed in any one of claims 1 to 6.
8. A connector as claimed in any one of claims 2 to 7 wherein said first and second retaining elements comprise a non-resilient body having said inclined face portion and retaining edge portion.
9. A spacer frame assembly comprising (a) a spacer frame having an inner wall having an inner surface defining a rectangle and an opposing outer wall spaced from said inner wall, and wherein said inner and outer walls define a hollow section; and (b) a plug connector as defined in any one of claims 1 to 8 within said spacer frame.
10. An assembly as claimed in claim 9 wherein said inner spacer frame wall has at least a pair of parallel longitudinal series of perforations.
11. An assembly as defined in claim 9 or claim 10 wherein said longitudinal middle web of said connector is adjacent said inner wall of said spacer frame.
12. An assembly as defined in claim 9 or claim 10 wherein said longitudinal middle web of said connector is adjacent said outer wall of said spacer frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2639201 CA2639201A1 (en) | 2008-08-28 | 2008-08-28 | Plug connector for retaining hollow sections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2639201 CA2639201A1 (en) | 2008-08-28 | 2008-08-28 | Plug connector for retaining hollow sections |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2639201A1 true CA2639201A1 (en) | 2008-12-05 |
Family
ID=40091253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2639201 Abandoned CA2639201A1 (en) | 2008-08-28 | 2008-08-28 | Plug connector for retaining hollow sections |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2639201A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202012102380U1 (en) | 2012-06-28 | 2013-09-30 | Max Kronenberg | Connectors |
| WO2017050624A1 (en) * | 2015-09-24 | 2017-03-30 | Kronenberg Ralf M | Plug connector and plug connection |
| DE102015016303A1 (en) * | 2015-12-17 | 2017-06-22 | Rottler und Rüdiger und Partner GmbH | Corner connector, spacer frame, insulating glass pane and method of making a spacer frame |
| PL422089A1 (en) * | 2017-07-03 | 2019-01-14 | Grzywacz Cezary P.P.H.U. Plastmax | Plug-in connector for empty sections |
-
2008
- 2008-08-28 CA CA 2639201 patent/CA2639201A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202012102380U1 (en) | 2012-06-28 | 2013-09-30 | Max Kronenberg | Connectors |
| WO2017050624A1 (en) * | 2015-09-24 | 2017-03-30 | Kronenberg Ralf M | Plug connector and plug connection |
| DE102015016303A1 (en) * | 2015-12-17 | 2017-06-22 | Rottler und Rüdiger und Partner GmbH | Corner connector, spacer frame, insulating glass pane and method of making a spacer frame |
| PL422089A1 (en) * | 2017-07-03 | 2019-01-14 | Grzywacz Cezary P.P.H.U. Plastmax | Plug-in connector for empty sections |
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