GB2173563A - Reinforced screw holes in hollow profile members - Google Patents
Reinforced screw holes in hollow profile members Download PDFInfo
- Publication number
- GB2173563A GB2173563A GB08607112A GB8607112A GB2173563A GB 2173563 A GB2173563 A GB 2173563A GB 08607112 A GB08607112 A GB 08607112A GB 8607112 A GB8607112 A GB 8607112A GB 2173563 A GB2173563 A GB 2173563A
- Authority
- GB
- United Kingdom
- Prior art keywords
- profile member
- hollow profile
- member according
- reinforcement element
- hollow
- 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
- 230000002787 reinforcement Effects 0.000 claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000004033 plastic Substances 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229920002522 Wood fibre Polymers 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004753 textile Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- E06B3/96—Corner joints or edge joints for windows, doors, or the like frames or wings
- E06B3/9636—Corner joints or edge joints for windows, doors, or the like frames or wings for frame members having longitudinal screw receiving channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
- F16B37/122—Threaded inserts, e.g. "rampa bolts"
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Door And Window Frames Mounted To Openings (AREA)
- Securing Of Glass Panes Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Panels For Use In Building Construction (AREA)
- Body Structure For Vehicles (AREA)
- Window Of Vehicle (AREA)
Abstract
A hollow profile member (1) has at least one inextensible reinforcement element (2a, 2b, 4a, 4b) embedded therein. Each reinforcement element is provided with corrugations (11) on at least one side substantially transversely to its length direction. The corrugations (11) are provided over the whole length of the reinforcement element and along this one side there is provided at least one elongate screw hole (3, 5) having a preferably circular cross-section and bordering the corrugations. In the manufacture of frames, as for example window-frames or door-frames, two suitably cut hollow profile member parts can be secured one to the other with high strength using only simple threaded bolts or screws, because the threaded bolt or screw is screwed into the said hollow chamber (3, 5) where the corrugations (11) on the one side of the reinforcement element act as a counter-thread to hold the bolt or screw anchored fast in the material of the hollow profile member. <IMAGE>
Description
SPECIFICATION
Hollow profile members
This invention relates to hollow profile members for example for use in the manufacture of doorframes and window-frames.
It is an object of the present invention to provide a hollow profile member where hollow profile member parts can easily be fixed to one another at junction areas with very low expenditure and with high strength.
According to the invention there is provided a hollow profile member comprising a section of base material having at least one elongate reinforcement element of an inextensible material embedded in the base material, wherein said at least one reinforcement element has corrugations of least along one side and extending transversely of the element, and along this one side there is provided at least one hollow chamber which extends longitudinally of the profile member and which borders the corrugations with at least one common boundary.
Using the inventive construction of the hollow profile member and the reinforcement elements the possibility is created of fixing fast and connecting together two hollow profile member parts at abutting surfaces thereof by using a single threaded bolt or one or more threaded screws.
In order to produce such a connection, for example in the manufacture of a window-frame, the hollow profile members are first cut into suitable length sections, wherein the ends of the respective length sections are cut at an angle (for example at an angle of 450 with respect to the longitudinal .centre-line of the hollow profile member) in order thereby to be able to fix two hollow profile member parts in abutting contact (end to end) at right-angles to each other. Then, at predetermined positions, bores are made into the end of one of the hollow profile member parts, to receive threaded bolts or threaded screws.The two hollow profile member parts are then put together and the threaded bolts or threaded screws are inserted into the bored bores so that they can be screwed in into one of the hollow chambers, said chamber preferably having a circular cross-section. The reinforcement element bordering the hollow chamber, in fact the corrugations of the reinforcement element, thus serve as a counter-thread for the threaded bolt or the threaded screw, so that the threaded bolt or the threaded screw is thus anchored fast in the other hollow profile member part.
Tests which have been carried out show that, with increasing load and strain on the connecting zone of two hollow profile member parts, the heads of the threaded bolts or of the threaded screws are broken off rather than the threaded bolts or the threaded screws becoming loose.
Therefore, with the present invention, the special advantage is realised that even if the hollow profile member is made from a relatively soft base material (plastics material), then just by using only simple means, e.g. bolts or screws, extremely stable and highly load-resistant edge corinection of two hollow profile member parts can be achieved.
The reinforcement element which is used for this can have a rectqngular cross-section but can alternatively have an arcuate shape or else can have a U-shaped cross-section, in which latter case the hollow chamber is then preferably located within the U-shaped cross-section such that the three internal side walls of the reinforcement element border this hollow chamber and the corrugations formed on these three internal side walls form common boundaries with the hollow chamber.
A further embodiment of the invention has at least one reinforcement element formed so as to have an undulatory cross-section, with a hollow chamber in each wave trough, so that then a single reinforcement element can be used to anchor several threaded bolts or threaded screws.
Preferably, the corrugations, which are provided at least along one side of the reinforcement element over the whole length thereof, have a pitch separation corresponding to the pitch of the thread of a threaded bolt to be used or of a threaded screw to be used for anchoring purposes.
One very advantageous embodiment of the invention is one in which the said corrugations are inclined at an angle with respect to the longitudinal axis of the reinforcement element, with such inclination substantially corresponding to the pitch of a threaded anchoring bolt or screw to be used. With this last-mentioned construction the corrugations perform the function of a counter-thread so that a particularly strong and secure fixing of the threaded bolts or threaded screws results.
The hollow chamber and bore extending along the boundary with the reinforcement element should preferably be circular in cross-section and have a diameter which corresponds to the diameter of the root of the threaded bolt or of the threaded screw to be used.
Furthermore, a further advantage can be achieved with one embodiment of the invention said at least one hollow chamber has a slit-like cross-section. With this latter construction the bore of the inclined further hollow profile member part which is to be secured to the one hollow profile member part need not be aligned exactly with the hollow chamber or with the bore, so that with this construction the assembly and securement of two hollow profile member parts is simplified.
The reinforcement elements used can be made of very different materials, such as for example iron, steel, light metal or an alloy.
The hollow profile member base material can be a plastics material, or a mixture of plastics material and fibres, in particular a plastics material-wood fibre mixture.
A hollow profile member which is made according to the invention can, in particular, be used for the manufacture of plastics material window-frames or plastics material door-frames.
A number of embodiments of the invention will now be described by way of example and with reference to the drawings, in which:
Fig. 1 is an end view, partly broken away, of a hollow profile member according to the present invention having several reinforcement elements;
Fig. 2 shows a second embodiment of profile member according to the invention in a view corresponding to that of Fig. 1;
Fig. 3 is a side view of one of the reinforcement elements used in the embodiment according to Fig.
1;
Fig. 4 is a side view of a further reinforcement element having a different configuration of its corrugations; and,
Fig. 5 is a view, similar to Fig. 1, of a third embodiment of profile member in accordance with the invention.
Fig. f shows an end view of a hollow profile member, partly broken away, where the profile member is designated generally at 1. This hollow profile member comprises a relatively thick wall portion in which reinforcement elements 2a, 2b, 4a and 4b are embedded, these reinforcement elements having been embedded during an extrusion process which is part of the manufacture of the hollow profile member.
In the embodiment according to Fig. 1 two pairs of reinforcement elements 2a, 2b and 4a, 4b are arranged respedively-,'ace-to-face a certain distance apart, and in the space between each pair of reinforcement elements 2a, 2b and 4a, 4b an elongate hollow chamber 3, 5 is formed, respectively extending up to one side of each reinforcement element 2a, 2b and 4a, 4b of each pair. These hollow chambers 3 and 5 each have a circular cross-section and are produced in the production of the hollow profile member, which itself is produced to any desired length by an extrusion process.
The reinforcement elements 2a, 2b and 4a, 4b lead to a substantial mechanical reinforcement of the hollow profile member, but according to the present invention they also have a further function.
On the surfaces of the reinforcement elements 2a, 2b and 4a, 4b which face each other there are formed corrugations 11 which are provided along the whole length of the respective reinforcement elements. These corrugations are shown in Fig. 3 in side view and can consist for example of rib-like projections. The distance between two adjacent riblike projections preferably corresponds to the thread pitch of a threaded bolt or a threaded screw which is to be used for a subsequent fastening.
If a frame, for example a window-frame, is to be produced from the hollow profile member 1, then, first, hollow profile member parts of appropriate length are cut, so that two hollow profile member parts can be abutted together at the cut surfaces so as to make a desired angle (for example 90 ). Then, a bore is made into one of the hollow profile member parts at a predetermined position, the diameter of the bore corresponding to the diameter of the hollow chamber 3. Then, the individual hollow profile member parts are put together in the desired arrangement and are secured together with the aid of threaded bolts or threaded screws, wherein these bolts or screws are screwed through the one hollow profile member part into the hollow chamber 3 or 5 of the other hollow profile member part.The corrugations on the side walls of the reinforcement elements 2a, 2b and 4a, 4b thus have the function of a counter-thread, so that the relevant screws or bolts are anchored fast in the relevant hollow profile member part.
The diameter of chamber 3 or of chamber 5 should correspond substantially to the root diameter of the threaded bolt to be used orofthe threaded screw to be used.
Fig. 1 shows a further embodiment according to the present invention. In a hollow profile member part 6, which is shown broken away, into the material of the wall are embedded several arcuate shaped reinforcement elements 7a, 7b, 9a and 9b which are arranged in pairs relative to one another with a predetermined spacing therebetween so that their concave sides are facing one another. On their concave sides the reinforcement elements are provided with corrugations 12 which are provided along the whole length of the reinforcement elements and can be formed similarly to the corrugations as shown in Fig. 3 or in Fig. 4. In the space between the two reinforcement elements 7a, 7b 9a and, 9b respectively, a hollow chamber 8 or 10 is formed which serves to receive a suitably dimensioned threaded bolt or a suitably dimensioned threaded screw.Both the hollow chambers 8, 10 and also the reinforcement elements 7a, 7b, 9a and 9b are extruded in in the manufacture of the hollow profile member.
In Fig. 4the corrugations 11 are shown inclined at an angle to the longitudinal axis of the element 2a, this inclination substantially corresponding to the pitch of the thread of a fastening bolt or screw.
In the embodiment according to Fig. 2 nearly a complete counter-thread for a threaded bolt or a threaded screw is formed, i.e. the arcuate reinforcement elements extend around almost a full circle.
In the embodiment according to Fig. 5 a hollow profile member part is designated generally by reference number 13 and has thick wall portions into which reinforcement elements 14 and 15 are embedded. In the embodiment according to Fig. 5 the reinforcement elements 14, 15 each have a Ushaped cross-section, so that three internal wall surfaces are provided for each element extending at right-angles to each other. On all three internal wall surfaces corrugations are provided over the whole length of each reinforcement element, somewhat as in Fig. 3 or Fig. 4, and within the interior of the Ushaped cross-section a hollow chamber 16 or 19 is formed which extends up to all three internal walls.
Athreaded bolt or threaded screw which is screwed into the hollow chamber 16 or 19 is thus secured in this embodiment at three different positions in the material of the hollow profile member by a counterthread.
In all the embodiments the hollow profile member is preferably produced from a plastics material-fibre
mixture, in particular from a plastics material
woodfibre mixture, whereas the reinforcement
elements are made from sheet material, steel
members, light metal members or of alloys and
therefore have a very much greater hardness than
the basic material of the hollow profile member. The
reinforcement elements may be made for example
of iron, steel, light metal, aluminium or even a
textile material. The plastics material is preferably
polyvinylchloride and the fibres may be of wood,
metal or glass.
It is evident that a hollow profile member
according to the present invention can be cut to any
desired length and can be built up into different
configurations, such as for example into window
frames and door-frames, with the individual hollow
profile member parts being secured together with
especially high strength by using simple threaded
bolts or threaded screws.
For a person skilled in the art many changes and
alterations are possible without exceeding the
scope of the present invention. There is for example
the possibility of producing the reinforcement
elements from a sheet material having a wave-like
or undulating cross-section, so that there are a
succession of wave crests and wave troughs. With
this configuration of the reinforcement elements the
hollow chambers can suitably be provided in the
wave troughs.
Furthermore, the present invention is not limited
to a specific cross-sectional shape for the hollow
profile member. The only necessity for realising the
present invention is that the hollow profile member,
having any desired cross-sectional shape, should
have at least one wall portion which has a sufficient
wall thickness to be able to receive a reinforcement
element (which is preferably co-extruded during the
manufacturing process of the hollow profile
member).
Claims (18)
1. A hollow profile member comprising a section
of base material having at least one elongate reinforcement element of an inextensible material
embedded in the base material, wherein said at
least one reinforcement element has corrugations at
least along one side and extending transversely of the element, and along this one side there is
provided at least one hollow chamber which
extends horizontally of the profile member and which borders the corrugations with at least one
common boundary.
2. A hollow profile member according to claim 1, in which the or each reinforcement element has a
rectangular cross-section.
3. A hollow profile member according to claim 1, in which the or each reinforcement element has an arcuate cross-sectional shape, and in which the hollow chamber is circular in cross-section and extends along the concave side of the or each reinforcement element.
4. A hollow profile member according to claim 1, wherein the or each reinforcement element has a Ushaped cross-sectional shape, wherein the hollow chamber is formed within said U-shaped crosssection and wherein corrugations are provided on all three internal wall surfaces of the reinforcement element.
5. A hollow profile member according to claim 1, in which the or each reinforcement element has a wave-like cross-sectional shape, and in which a hollow chamber is positioned within each wave trough.
6. A hollow profile member according to any preceding claim, in which the corrugations have a pitch corresponding to the pitch of the thread of a threaded bolt or of a threaded screw.
7. A hollow profile member according to claim 6, in which the corrugations extend substantially perpendiculartothe longitudinal axis of the reinforcement element.
8. A hollow profile member according to claim 6, in which the corrugations are inclined at an angle to the longitudinal axis of the reinforcement element, and in which this inclination substantially corresponds to the pitch of the thread of a threaded bolt or of a threaded screw.
9. A hollow profile member according to any of claims 1,3 or 4, in which said at least one hollow chamber has a circular cross-section with a diameter which corresponds to the root diameter of a threaded bolt or of a threaded screw.
10. A hollow profile member according to any preceding claim, in which the or each hollow chamber has a circular cross-section.
11. A hollow profile member according to claim 1, in which said at least on hollow chamber has a slotlike cross-section.
12. A hollow profile member according to any preceding claim, in which the at least one reinforcement element is made of iron, steel or a light metal.
13. A hollow profile member according to any of claims 1 toll, in which the at least one reinforcement element is made of aluminium or a textile material.
14. A hollow profile member according to any preceding claim, in which the base material comprises a plastics material.
15. A hollow profile member according to any preceding claim, in which the base material comprises a plastics material-fibre material.
16. A hollow profile member according to claim 15, in which the plastics material is polyvinylchloride and the fibres are wood fibres, metal fibres or glass fibres.
17. A hollow profile member according to any preceding claim, in which the hollow profile member constitutes a part of a window-frame or door-frame.
18. A hollow profile member substantially as hereinbefore described with reference to any one of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853512950 DE3512950A1 (en) | 1985-04-11 | 1985-04-11 | CAVE PROFILE |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8607112D0 GB8607112D0 (en) | 1986-04-30 |
| GB2173563A true GB2173563A (en) | 1986-10-15 |
| GB2173563B GB2173563B (en) | 1988-09-14 |
Family
ID=6267708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08607112A Expired GB2173563B (en) | 1985-04-11 | 1986-03-21 | Hollow profile members |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE904565A (en) |
| DE (1) | DE3512950A1 (en) |
| ES (1) | ES296685Y (en) |
| FR (1) | FR2580223A1 (en) |
| GB (1) | GB2173563B (en) |
| NL (1) | NL8600921A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2193778A (en) * | 1986-08-07 | 1988-02-17 | Multiclip Co Ltd | Securing rail spikes in sleepers |
| WO1997006942A1 (en) * | 1995-08-17 | 1997-02-27 | Meeth Ernst Josef | Process for producing profiled materials, in particular for door and window production |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB961877A (en) * | 1900-01-01 | |||
| GB558097A (en) * | 1942-02-25 | 1943-12-21 | Bunyan John | Improvements in or relating to the securing of rails or the like to railway sleepers or like surfaces |
| GB607957A (en) * | 1944-03-20 | 1948-09-08 | Tinnerman Products Inc | Improvements relating to fastening devices for use with bodies of moulded material |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE884102C (en) * | 1943-12-09 | 1954-11-08 | Lavorazione Mat Plast | Device for the production of pipes from thermoplastics with reinforcement inserts |
| US3015133A (en) * | 1959-02-05 | 1962-01-02 | Anaconda American Brass Co | Method of making jacketed strip-wound metal hose |
| GB1083297A (en) * | 1965-08-24 | 1967-09-13 | Aluminium Lab Ltd | Frame corner joint |
| DE2843437C2 (en) * | 1978-10-05 | 1985-05-15 | Dynamit Nobel Ag, 5210 Troisdorf | Multi-chamber hollow profile made of plastic |
| US4342524A (en) * | 1980-05-28 | 1982-08-03 | Anderson Richard N | Material fastening structure and method |
| JPS58119845A (en) * | 1982-01-11 | 1983-07-16 | Nippon Steel Corp | Manufacture of metal pipe covered with plastic |
-
1985
- 1985-04-11 DE DE19853512950 patent/DE3512950A1/en active Granted
-
1986
- 1986-03-21 GB GB08607112A patent/GB2173563B/en not_active Expired
- 1986-03-27 FR FR8604424A patent/FR2580223A1/en not_active Withdrawn
- 1986-04-09 BE BE0/216507A patent/BE904565A/en not_active IP Right Cessation
- 1986-04-10 ES ES1986296685U patent/ES296685Y/en not_active Expired
- 1986-04-11 NL NL8600921A patent/NL8600921A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB961877A (en) * | 1900-01-01 | |||
| GB558097A (en) * | 1942-02-25 | 1943-12-21 | Bunyan John | Improvements in or relating to the securing of rails or the like to railway sleepers or like surfaces |
| GB607957A (en) * | 1944-03-20 | 1948-09-08 | Tinnerman Products Inc | Improvements relating to fastening devices for use with bodies of moulded material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2193778A (en) * | 1986-08-07 | 1988-02-17 | Multiclip Co Ltd | Securing rail spikes in sleepers |
| WO1997006942A1 (en) * | 1995-08-17 | 1997-02-27 | Meeth Ernst Josef | Process for producing profiled materials, in particular for door and window production |
| US6237208B1 (en) | 1995-08-17 | 2001-05-29 | Ernst-Josef Meeth | Process for producing profiled materials, in particular for door and window production |
Also Published As
| Publication number | Publication date |
|---|---|
| NL8600921A (en) | 1986-11-03 |
| ES296685Y (en) | 1988-05-16 |
| GB2173563B (en) | 1988-09-14 |
| DE3512950A1 (en) | 1986-10-16 |
| GB8607112D0 (en) | 1986-04-30 |
| DE3512950C2 (en) | 1987-10-08 |
| BE904565A (en) | 1986-07-31 |
| FR2580223A1 (en) | 1986-10-17 |
| ES296685U (en) | 1987-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |