GB2333313A - Collapsable grille construction - Google Patents
Collapsable grille construction Download PDFInfo
- Publication number
- GB2333313A GB2333313A GB9800948A GB9800948A GB2333313A GB 2333313 A GB2333313 A GB 2333313A GB 9800948 A GB9800948 A GB 9800948A GB 9800948 A GB9800948 A GB 9800948A GB 2333313 A GB2333313 A GB 2333313A
- Authority
- GB
- United Kingdom
- Prior art keywords
- collapsible
- grille according
- pair
- elongate
- collapsible grille
- 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.)
- Granted
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
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
- E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
- E06B9/0615—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the closing elements
- E06B9/063—Bars or rods perpendicular to the closing direction
-
- 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
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
- E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
- E06B9/0646—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position
- E06B9/0653—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position stored side by side in the closing plane
- E06B9/0661—Lazy tongue, pantograph or scissor-like systems in the plane of the opening
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
A collapsable grille comprises a plurality of pairs of elongate members 7, each pair of elongate members 7 being interconnected by connecting members 2 and being mountable on at least one guide means 6,8. Elongate members 7 of a pair are connected one to another by fastening means, the fastening means comprising a pair of spaced apart fasteners 16 interlocked by a joining member 20 extending therebetween. Each fastener 16 is so shaped and dimensioned as to fit inside a respective elongate member 7 of a pair thereof, and each elongate member 7 of a pair is provided with at least one opening 18 through which the joining member 20 may pass. The joining member 20 may be a nut and bolt arrangement (see fig 3) where there is a cut-out for the head of the nut and bolt in the fastener 16, or a U-shaped pin (see fig 4) which has a space provided in the fastener 16. The fasteners 16 can be held in position on the elongate members 7 by adhesive, welding, or by pressure applied by a screw 17.
Description
IMPROVEMENTS IN COLLAPSIBLE GRILLE CONSTRUCTION
Field of the Invention
This invention relates to collapsible grilles and in particular to the construction thereof.
Background to the Invention
Collapsible gates are often used as security grilles in order to render doorways and windows more secure than would be so in the absence of a security device.
One known security grill comprises pairs of elongate spaced apart members, each elongate member of the pair being connected to the other by means of rivets, each pair of elongate members being interconnected by connecting members so as to be movable in concertina fashion, the ends of the connecting members being slidably mounted.
When an order is taken for a grill, to fit a doorway for example, the dimensions of the doorway to be secured are taken, and a grill is manufactured for that particular doorway. Not only is it necessary for the components of the grill to be cut to length, but also none of the components can be painted prior to assembly. This is because the force used to rivet together each elongate member of a pair is great and if the elongate members are pre-painted, the paint may crack upon riveting unless careful and time consuming riveting methods are used.
The points where the elongate spaced apart members are attached are points of weakness, which a potential burglar could identify and attack. Furthermore, the manufacturing process for the above-mentioned type of gate presents problems. First, very few standard components can be used, meaning that for each grille machine settings must be altered, and that the time taken to meet any one order is relatively great. The second problem is one of surface finish of the grill. It is much more difficult to apply paint to the components of the grill after assembly, than to apply paint to the components prior to assembly. The result is that the surface finish of such grilles is less than perfect, and the grilles are relatively costly.
Attempts have been made to overcome both the problems of strength and finish. For example, one known security grill, manufactured by Professional Barrier Sys tems Ltd and sold under the name "Extendor", provides a good surface finish by making the elongate members from aluminium extrusions, each elongate member being provided with spaced apart channels to receive a second elongate member to which the connecting members are attached. Elongate members of a pair are connected together at their ends by means of a metal profile. Whilst this type of grill is aesthetically pleasing, it is very expensive to manufacture, because of the need to extrude aluminium, and is also weak because of the nature of the material used and the structure of the assem biy.
It would be desirable to provide a collapsible gate which does not suffer from the disadvantages associated with known collapsible grilles.
Summary of the Invention
In accordance with the invention there is provided a collapsible grille comprising a plurality of pairs of elongate, each pair of elongate members being interconnected by connecting members and being mountable on at least one guide means, wherein elongate members of a pair are connected one to another by fastening means, the fastening means comprising a pair of spaced apart fasteners interlocked by a joining member extending therebetween, and wherein each fastener is so shaped and dimensioned as to fit inside a respective one elongate member of a pair thereof, and wherein each elongate member of a pair is provided with at least one opening through which the joining member may pass.
The said at least one opening may comprise a slot, or an aperture.
The elongate members may be formed from box section, one face of the box section having at least one slot or aperture therein. Alternatively, the elongate members may be substantially channel-shaped. A retaining member may extend at substantially 90 degrees from at least one of the free ends of the channel-shaped elongate member. A plurality of said retaining members may extend from an elongate member.
A retaining member may extend substantially the full length of the elongate member.
The retaining member may be substantially L-shaped.
The fasteners may be fixed in place in the elongate members by means of an adhesive, or welding.
Alternatively, the fastening means may be releasably secured to the elongate members by means of a locking means. The locking means may comprise a grub screw, or similar, arranged to force the fasteners against an inner surface of the elongate member. The fasteners may be formed a plastics material, preferably nylon. Each fastener may be provided with an internally threaded bore to receive a grub screw. Each fastener may be provided with a bore through which the joining member may pass.
The bore may have an enlarged portion to receive an enlarged portion of the joining member. The joining member may comprise a nut and bolt, the enlarged portion of the said bores receiving the bolt head and the nut respectively.
In another embodiment, the fastener comprises a bore and a slot, the bore and the slot being so shaped and dimensioned as to receive a portion of the joining member.
The joining member may comprise a web extending between the said fasteners.
The joining member may consist of a component that is substantially I-shaped in cross-section, wherein the end plates form the fasteners and the web thereof forms the joining member. The outer free ends of the upper and/or lower end plates may be arranged to project inwardly, each end plate being substantially U-shaped.
The fastening means may comprise a pair of plates attached one to another, the ends of the plates being so shaped and dimensioned as to fit inside a respective of elongate member of a said pair.
Advantageously, a locking arrangement is provided to lock the said grille in a closed position. Preferably, the locking arrangement permits an endmost pair of elongate members of the said grille to be locked to a movable or fixed object, for example another collapsible grille, or a plate attached to a wall or frame.
In assembling the grille, the elongate members and the levers are painted, one end of each connecting member is mounted on a joining member of a fastening means, the other end being mounted on a slider, and each fastening means is inserted into an elongate member. The fastening members are then fixed in position. The elongate members are then mounted on the at least one guide means.
The collapsible grille according to the invention is stronger than known grilles and is more aesthetically pleasing. This is due to the fastening means used, which are very strong due to the surface area over which a force exerted on the joining member is spread.
Furthermore, large forces are not exerted on the elongate members during securing of the fasteners to the elongate members, and hence there is no danger of paint being cracked. This means that the elongate members and levers can be painted prior to assembly of the grille, and therefore a better surface finish can be achieved with less paint. This is because only outside of the elongate members needs to be painted, and no parts of the levers are hidden.
Brief Description of the Drawings
In the drawings, which illustrate preferred embodiments of the invention:
Figure 1 is an end view of a collapsible grille according to the invention;
Figure 2 is a partial cross-section through a pair of elongate members;
Figure 3 is cross-section on A-A;
Figure 4 is a cross-section through an alternative fastening means;
Figure 5 is a partial cross-section through a pair of elongate members of an alternative configuration;
Figure 6 is a schematic representation of a further alternative fastening means; and
Figure 7 is a plan view of the fastening means shown in Figure 6, fastening together a pair of elongate members.
Detailed Description of the Preferred Embodiments
Referring now to Figure 1, there is shown a security grill in the form of a collapsible gate 1, comprising a plurality of pairs elongate members 7, adjacent pairs of elongate members being connected one to another by connecting members 2. Each connecting member 2 comprises a pair of levers 3, 4 joined at their centres by a pin 5.
The levers 3, 4 of the grill function in the same manner as known security grilles, and therefore this will not be described in detail. However, to explain briefly, it will be understood by one skilled in the art that one end of each lever 3,4 must be pivotally mounted in a pair of elongate members 7, whereas the other end of each lever 3, 4 must be pivotally and slidably mounted in an adjacent pair of elongate members 7. This is so as to provide for the grill 1 to open and close in concertina fashion.
The lower end of each pair of elongate members 7 is provided with a runner 14, which may be made from nylon. The shape of each runner 14 corresponds to the shape of track 8 on which the runners rest. The upper end of each pair of elongate members 7 is also provided with a runner 9, which slides inside the upper track 6. The runner 9 may be formed from nylon.
Attached to one endmost pair of elongate members 7 is an extrusion 10 in which there is mounted a lock 11 which cooperates with male locking members 1 3 mounted on an end plate 12 to secure the grille in a closed position.
Referring now to Figures 2 and 3, the fastening means which fasten one elongate member 7 to another to form a pair will be described in greater detail. The elongate members 7 are substantially rectangular in cross-section. Each elongate member 7 is provided on its inward face with a slot 1 8 through which a joining member 20 may pass. The joining member 20 is mounted in a block 16, which sits inside the elongate member 7. Each block is provided with a bore 18 through which the connecting member, which is a bolt, may pass. The diameter of the bore 18 is enlarged at 1 9 to receive the head 21 of bolt, or the nut 21 a which is releasably attachable to bolt. Each block 1 6 is further provided with an internally threaded bore 22. As can be seen from Figure 2, a grub screw 1 7 passes through the bore 22 to fix the block 1 6 is a desired position in the elongate member 7. The grub screw 17 has a recessed portion 23 shaped to receive an allen key.
Mounted on the bolt 20 between the two elongate members 7 to either side of a washer 1 5 are the levers 3, 4.
In Figure 2, the grub screws are acting to fasten the blocks 1 6 in position in the elongate members 7. This is achieved by rotating the grub screw 1 6 until it engages with the inside of the elongate member 7, and forces the block16 against the opposite side of the elongate member 7.
The embodiment shown in Figure 4 is very similar to that shown in Figures 2 and 3, but rather than the joining member comprising a nut and bolt, the joining mem ber is a rod. A block 25 is provided with an internally threaded bore 26 to receive a grub screw 17. The block is also provided with a bore 27, which extends into a channel 29 to receive the substantially U-shaped rod 27. The rod is preferably made from steel.
Referring now to Figure 5, there is shown an alternative configuration of elongate members fastened together to form a pair by fastening means. The elongate members 31 are channel-shaped, and extending from the free ends of the said members 31 are L-shaped retaining members 32. A fastener 30 is attached by means of a weld 35 to the inside of each elongate member 31. The fasteners 30 are connected together by a joining member 34 in the form of rod, which extends between the pair of fasteners. The joining member 34 may attached to the fasteners 30 by any suitable means such as screw threads, welding, or an adhesive for example.
The fasteners 30 are substantially U-shaped. This increases strength of the fasteners and also provides a greater surface area for securing the fasteners to the elongate members, by means of adhesive or welding for example.
Mounted on the rod 34 between the two elongate members 31 to either side of a washer 1 5 are the levers 3, 4.
Preferably, elongate members 7 or 31 are joined one to another by the fastening means described with reference to Figures 2 and 3, or 4, or 5 at each point where a set of connecting members 2 is attached. For example, in Figure 1, the elongate members would be joined one to another at two points.
Referring now to Figures 6 and 7, an alternative fastening means 36 is shown.
The fastening means 36 comprises fasteners 37 joined together by joining member 38 in the form of a web. The fastening means connects together a pair of elongate members 31 (as described with reference to Figure 5). The fasteners 37 are formed from steel for example, as is the joining member 38. The joining member is preferably welded to the fasteners. This fastening means is used to connect together elongate members 31 together to form a pair at points where the mounting of levers 3 and 4 as shown in Figures 1 to 5 is not a requirement. For example a pair of elongate members 31 may be connected together towards their upper and lower ends by such fastening means. Due to the joining member 38 being substantially the same height as the fasteners 37, the fastening means much stronger than a conventional rivet.
Claims (25)
1. A collapsible grille comprising a plurality of pairs of elongate members, each pair of elongate members being interconnected by connecting members and being mountable on at least one guide means, wherein elongate members of a pair are connected one to another by fastening means, the fastening means comprising a pair of spaced apart fasteners interlocked by a joining member extending therebetween, and wherein each fastener is so shaped and dimensioned as to fit inside a r respective elongate member of a pair thereof, and wherein each elongate member of a pair is provided with at least one opening through which the joining member may pass.
2. A collapsible grille according to Claim 1, wherein said at least one opening comprises a slot.
3. A collapsible grille according to Claim 1 or 2, wherein the elongate members are formed from box section, one face of the box section having at least one slot or aperture therein.
4. A collapsible grille according to Claim 1 or 2, wherein the elongate members are substantially channel-shaped.
5. A collapsible grille according to Claim 4, wherein a retaining member extends at substantially 90 degrees from at least one of the free ends of the channelshaped elongate member.
6. A collapsible grille according to Claim 5, wherein a plurality of said retaining members extend from an elongate member.
7. A collapsible grille according to any preceding claim, wherein a retaining member extends substantially the full length of the elongate member.
8. A collapsible grille according to Claim 7, wherein the retaining member is substantially L-shaped.
9. A collapsible grille according to any preceding claim, wherein the fasteners are fixed in place in the elongate members by means of an adhesive, or by welding.
10. A collapsible grille according to any of Claims 1 to 8, wherein the fastening means are releasably secured to the elongate members by means of a locking means.
11. A collapsible grille according to Claim 10, wherein the locking means comprises a grub screw, or similar, arranged to force the fasteners against an inner surface of the elongate member.
12. A collapsible grille according to Claim 11, wherein the fasteners are formed of a plastics material, preferably nylon.
13. A collapsible grille according to Claim 12, wherein each fastener is provided with an internally threaded bore to receive a grub screw.
14. A collapsible grille according to any preceding claim, wherein each fastener is provided with a bore through which the joining member may pass.
1 5. A collapsible grille according to Claim 14, wherein the bore has an enlarged portion to receive an enlarged portion of the joining member.
1 6. A collapsible grille according to Claim 15, wherein the joining member comprises a nut and bolt, the enlarged portion of the said bores receiving the bolt head and the nut respectively.
17. A collapsible grille according to any of Claims 1 to 8, wherein the fastener comprises a bore and a slot, the bore and the slot being so shaped and dimensioned as to receive a portion of the joining member.
1 8. A collapsible grille according to Claim 17, wherein the joining member comprises a web extending between the said fasteners.
1 9. A collapsible grille according to Claim 18, wherein the joining member consists of a component that is substantially I-shaped in cross-section, wherein the end plates form the fasteners and the web thereof forms the joining member.
20. A collapsible grille according to Claim 19, wherein the outer free ends of the upper and/or lower end plates are arranged to project inwardly, each end plate being substantially U-shaped.
21. A collapsible grille according to any preceding claim, wherein the fastening means comprises a pair of plates attached one to another, the ends of the plates being so shaped and dimensioned as to fit inside a respective of elongate member of a said pair.
22. A collapsible grille according to any preceding claim. comprising a locking arrangement to lock the said grille in a closed position.
23. A collapsible grille according to Claim 22, wherein the locking arrangement is such as to permit an endmost pair of elongate members of the said grille to be locked to a movable or fixed object
24. A collapsible grille according to Claim 23, wherein said object is another collapsible grille, or a plate attached to a wall or frame.
25. A collapsible grille, substantially as described with reference to, or as shown in, the drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9800948A GB2333313B (en) | 1998-01-17 | 1998-01-17 | Improvements in collapsible grille constructiion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9800948A GB2333313B (en) | 1998-01-17 | 1998-01-17 | Improvements in collapsible grille constructiion |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9800948D0 GB9800948D0 (en) | 1998-03-11 |
| GB2333313A true GB2333313A (en) | 1999-07-21 |
| GB2333313B GB2333313B (en) | 2002-11-27 |
Family
ID=10825425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9800948A Expired - Lifetime GB2333313B (en) | 1998-01-17 | 1998-01-17 | Improvements in collapsible grille constructiion |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2333313B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2449419A (en) * | 2007-05-17 | 2008-11-26 | Bradbury Security Grilles Ltd | Collapsible security grille |
| EP1961907A3 (en) * | 2007-02-23 | 2011-11-02 | TE.SI.FLEX S.r.l. | Grate device which can be opened |
| RU173507U1 (en) * | 2016-04-22 | 2017-08-29 | Общество с ограниченной ответственностью "Стиль-Столица" (ООО "Стиль-Столица") | PROTECTIVE LOGGING SLIDING LATTICE |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB587508A (en) * | 1944-01-26 | 1947-04-28 | John Wolfenden | Improvements in gates for lifts and lift landings |
| GB2151683A (en) * | 1983-12-23 | 1985-07-24 | Chim Chu Ng | Gate |
| GB2192420A (en) * | 1986-06-23 | 1988-01-13 | Wong Kwan Yu | Gate |
| GB2220691A (en) * | 1988-07-13 | 1990-01-17 | Chan Ping Cheng | Gate |
-
1998
- 1998-01-17 GB GB9800948A patent/GB2333313B/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB587508A (en) * | 1944-01-26 | 1947-04-28 | John Wolfenden | Improvements in gates for lifts and lift landings |
| GB2151683A (en) * | 1983-12-23 | 1985-07-24 | Chim Chu Ng | Gate |
| GB2192420A (en) * | 1986-06-23 | 1988-01-13 | Wong Kwan Yu | Gate |
| GB2220691A (en) * | 1988-07-13 | 1990-01-17 | Chan Ping Cheng | Gate |
| GB2221240A (en) * | 1988-07-13 | 1990-01-31 | Chan Ping Cheng | Gate |
Non-Patent Citations (2)
| Title |
|---|
| "Extendor - Retractable door and window security" Professional Barrier Systems Limited * |
| 16 Stapleton Road, Orton Southgate, Peterborough, PE2 6TD,UK * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1961907A3 (en) * | 2007-02-23 | 2011-11-02 | TE.SI.FLEX S.r.l. | Grate device which can be opened |
| EP2615238A1 (en) * | 2007-02-23 | 2013-07-17 | TE.SI.FLEX S.r.l. | Grate device which can be opened |
| GB2449419A (en) * | 2007-05-17 | 2008-11-26 | Bradbury Security Grilles Ltd | Collapsible security grille |
| GB2449419B (en) * | 2007-05-17 | 2012-02-29 | Bradbury Security Grilles Ltd | Collapsible security grille |
| RU173507U1 (en) * | 2016-04-22 | 2017-08-29 | Общество с ограниченной ответственностью "Стиль-Столица" (ООО "Стиль-Столица") | PROTECTIVE LOGGING SLIDING LATTICE |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2333313B (en) | 2002-11-27 |
| GB9800948D0 (en) | 1998-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Expiry date: 20180116 |