EP0487604B1 - A joint for structural members - Google Patents
A joint for structural members Download PDFInfo
- Publication number
- EP0487604B1 EP0487604B1 EP90912900A EP90912900A EP0487604B1 EP 0487604 B1 EP0487604 B1 EP 0487604B1 EP 90912900 A EP90912900 A EP 90912900A EP 90912900 A EP90912900 A EP 90912900A EP 0487604 B1 EP0487604 B1 EP 0487604B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- members
- joint
- bars
- structural members
- tubular
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/1413—Post-and-rail fences, e.g. without vertical cross-members
- E04H17/1447—Details of connections between rails and posts
- E04H17/1478—Details of connections between rails and posts the posts extending through apertures or cut-outs in the rails
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/42—Gratings; Grid-like panels
- E04C2/421—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction
- E04C2/422—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern
- E04C2/425—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern made of perforated bars
-
- 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
-
- 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
Definitions
- the invention relates to a joint for structural members and comprising two or more structural members fixed relative to one another at regular intervals by means of bars extending through openings in said structural members as well as by means of intermediary and outer tubular locking members mounted on said bars.
- Joints of the above type for structural members are used for instance for gratings, fencing gratings, filtering units, Venetian blinds or the like.
- FR-A-2 596 246 discloses a grating with such joints.
- the known joints are provided with locking means for instance in form of grooves or notches in the bars. Simultaneously the bars often disclose complicated cross sections with the frequent result that the manufacture and assembling of the members of the joint into the ready joint are rather time-consuming and expensive
- Other types of joints for structural members are provided with locking means comprising screw means, which also makes the assembling of such joints rather time-consuming. These types of joints are furthermore encumbered with the drawback that the fixing of the locking means is often poor and unreliable.
- the object of the invention is therefore to provide a joint for structural members, where the manufacture of the joint is especially fast and inexpensive, and where the members of said joints are quickly assembled into the ready joint, as well as where the locking members ensure a reliable fixing of the structural members.
- the joint for structural members according to the invention is characterised in that the tubular locking members are shrunk onto the bars.
- a joint is obtained which is both substantially faster and less expensive to manufacture than the known joints, said joint simultaneously being considerably more durable and reliable than the known joints.
- the structural members of the joint When the members of the joint are to be assembled into a ready joint, the structural members are at their openings pushed one by one over the bars while the desired intermediary tubular members are simultaneously inserted between said structural members. Subsequently, all the tubular locking members are shrunk onto the bars by means of for instance heat fed from the outside.
- the ends of the tubular members may abut on the adjacent structural members with the result that a particularly rigid joint is achieved.
- tubular members may be made of a plastic material capable of being caused to enter a shrinkable state, whereby a particularly simple and inexpensive manufacture of the joint is obtained.
- the inner surfaces of the tubular members may be provided with an adhesive coating, said inner surfaces being capable of engaging the outer surfaces of the bars in connection with the mounting procedure. In this manner an especially good fixing of the tubular members on the bars is achieved.
- the bars may be made of a plastic material
- the inner surfaces of the tubular members may be provided with a welding coating of plastic material of a flow temperature which is lower than the crystallization temperature of the plastic material of the tubular members, said inner surfaces of the tubular members being capable of engaging the outer surfaces of the bars in connection with the mounting procedure.
- tubular members and the bars may be of inner and outer, respectively, mating circular cross sections.
- Fig. 1 shows a joint 1 for structural members and comprising four structural members 2.
- the four structural members 2 are fixed at regular intervals in such a manner that they extend in parallel in the same plane.
- the structural members 2 are of a closed quadrangular cross section, and the illustrated joint 1 is preferably used as a grating unit.
- the illustrated joint for structural members is in no way to be considered a limitation of the scope of the invention as the joint can comprise an arbitrary number of structural members.
- the structural members need not extend in parallel nor do they need to be arranged in the same plane because the joint for structural members can just as well be used for a space grating unit.
- the joint 1 for structural members comprises furthermore bars 3 transversely extending through openings (not shown) in the structural members 2 so as to interconnect said structural members.
- Tubular members 4' and 4 are shrunk onto the bars 3 at the ends of said bars and between the structural members 2.
- the ends of the tubular members 4 and 4' are preferably permanently abutting on the adjacent structural members 2 with the result that said structural members are reliably fixed relative to one another. In this manner the joint 1 for structural members is both particularly rigid and strong.
- the tubular members 4, 4' are made of a plastic material which can be caused to enter a shrinkable state.
- the plastic material can for instance be hard PVC or technical types of plastics, such as polyethylene, capable of forming internal cross bondings PEX.
- the plastic material may optionally be fiber reinforced.
- the tubular members 4, 4' are preferably of a circular cross section and cut in suitable lengths from an extruded or injection moulded pipe.
- the pipe is such that the plastic material has formed internal cross bondings.
- the cross bondings can for instance be provided by the material being boiled in water.
- the pipe is subjected to heat until its inner diameter has been enlarged sufficiently for allowing insertion over the bars 3 of the tubular members 4, 4' cut out of the pipe.
- the structural members 2 and the tubular members 4, 4' are especially quickly and easily mounted on the bars 3 by said structural members 2 being pushed one by one over the bars 3 simultaneously with a tubular member 4 being inserted on each bar 3 between two succeeding structural members.
- the tubular members 4, 4' are now subjected to heat while they are simply retained at each end of the bars 3, preferably in such a manner that they firmly join the structural members 2.
- the tubular members 4, 4' are heated in such a manner that they reach or exceed the crystallization temperature of the plastic material with the result that said tubular members are shrunk onto the bars 3.
- the resulting assembling of the structural members is especially fast, easy and uncomplicated.
- the manufacture of the joint is particularly inexpensive, in fact the production costs have been reduced by up to 50% compared to the previously known complicated assembling methods.
- the tubular members 4, 4' can also be provided with an adhesive on their inner surfaces. As a result, the tubular members are extremely reliably fixed on the bars 3 after the shrinking thereon.
- the inner surfaces of the tubular members 4, 4' can be provided with a welding coating of a plastic material, such as polyethylene, of a flow temperature which is lower than the crystallization temperature of the plastic material of the tubular members 4, 4'. In this manner the tubular members 4, 4' are fixed on the bars 3 in a particularly strong and durable manner.
- the tubular members 4, 4' are preferably of a closed cross section, whereby they encircle the bars 3 completely after the shrinking.
- the tubular members can, however, just as well be of an open cross section, such as in form of longitudinally slit lengths of pipe, whereby the members can be pressed over the bars from the side before they are shrunk thereon.
- the joint according to the invention is particularly suited for the assembling of structural members made of light and strong materials, such as carbon-fiber or KEVLARTM-reinforced epoxy or glass fiber reinforced polyester.
- the invention has been described with reference to an especially preferred embodiment, but it is in no way limited to such an embodiment.
- the structural members may for instance be of many other cross sections beyond the illustrated closed quandrangles.
- the members may, as mentioned above, be made of many different materials including metals, such as aluminium.
- the joint according to the invention is used especially in connection with the manufacture of gratings, fencing gratings, filtering units, Venetian blinds or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Building Environments (AREA)
Abstract
Description
- The invention relates to a joint for structural members and comprising two or more structural members fixed relative to one another at regular intervals by means of bars extending through openings in said structural members as well as by means of intermediary and outer tubular locking members mounted on said bars.
- Joints of the above type for structural members are used for instance for gratings, fencing gratings, filtering units, Venetian blinds or the like. FR-A-2 596 246 discloses a grating with such joints. The known joints are provided with locking means for instance in form of grooves or notches in the bars. Simultaneously the bars often disclose complicated cross sections with the frequent result that the manufacture and assembling of the members of the joint into the ready joint are rather time-consuming and expensive Other types of joints for structural members are provided with locking means comprising screw means, which also makes the assembling of such joints rather time-consuming. These types of joints are furthermore encumbered with the drawback that the fixing of the locking means is often poor and unreliable.
- The object of the invention is therefore to provide a joint for structural members, where the manufacture of the joint is especially fast and inexpensive, and where the members of said joints are quickly assembled into the ready joint, as well as where the locking members ensure a reliable fixing of the structural members.
- The joint for structural members according to the invention is characterised in that the tubular locking members are shrunk onto the bars. As a result, a joint is obtained which is both substantially faster and less expensive to manufacture than the known joints, said joint simultaneously being considerably more durable and reliable than the known joints.
- When the members of the joint are to be assembled into a ready joint, the structural members are at their openings pushed one by one over the bars while the desired intermediary tubular members are simultaneously inserted between said structural members. Subsequently, all the tubular locking members are shrunk onto the bars by means of for instance heat fed from the outside.
- According to the invention the ends of the tubular members may abut on the adjacent structural members with the result that a particularly rigid joint is achieved.
- Moreover according to the invention the tubular members may be made of a plastic material capable of being caused to enter a shrinkable state, whereby a particularly simple and inexpensive manufacture of the joint is obtained.
- Furthermore according to the invention the inner surfaces of the tubular members may be provided with an adhesive coating, said inner surfaces being capable of engaging the outer surfaces of the bars in connection with the mounting procedure. In this manner an especially good fixing of the tubular members on the bars is achieved.
- In addition according to the invention the bars may be made of a plastic material, and the inner surfaces of the tubular members may be provided with a welding coating of plastic material of a flow temperature which is lower than the crystallization temperature of the plastic material of the tubular members, said inner surfaces of the tubular members being capable of engaging the outer surfaces of the bars in connection with the mounting procedure.
- The resulting fixing of the tubular members on the bars is particularly good, and accordingly a particularly strong and durable joint is achieved.
- Finally according to the invention, the tubular members and the bars may be of inner and outer, respectively, mating circular cross sections.
- The invention is described in greater detail below with reference to the accompanying drawing, in which
- Fig. 1 is a top view of a joint for structural members and to be used as a grating, and
- Fig. 2 is a side view of the joint of Fig. 1.
- Fig. 1 shows a
joint 1 for structural members and comprising fourstructural members 2. The fourstructural members 2 are fixed at regular intervals in such a manner that they extend in parallel in the same plane. Thestructural members 2 are of a closed quadrangular cross section, and the illustratedjoint 1 is preferably used as a grating unit. - The illustrated joint for structural members is in no way to be considered a limitation of the scope of the invention as the joint can comprise an arbitrary number of structural members. The structural members need not extend in parallel nor do they need to be arranged in the same plane because the joint for structural members can just as well be used for a space grating unit.
- The
joint 1 for structural members comprises furthermorebars 3 transversely extending through openings (not shown) in thestructural members 2 so as to interconnect said structural members.Tubular members 4' and 4 are shrunk onto thebars 3 at the ends of said bars and between thestructural members 2. The ends of thetubular members 4 and 4' are preferably permanently abutting on the adjacentstructural members 2 with the result that said structural members are reliably fixed relative to one another. In this manner thejoint 1 for structural members is both particularly rigid and strong. - The
tubular members 4, 4' are made of a plastic material which can be caused to enter a shrinkable state. The plastic material can for instance be hard PVC or technical types of plastics, such as polyethylene, capable of forming internal cross bondings PEX. The plastic material may optionally be fiber reinforced. Like thebars 3, thetubular members 4, 4' are preferably of a circular cross section and cut in suitable lengths from an extruded or injection moulded pipe. Already during or not until after the manufacturing process, the pipe is such that the plastic material has formed internal cross bondings. After the manufacture and when the pipe is made of for instance polyethylene containing Silan™ and catalyst, the cross bondings can for instance be provided by the material being boiled in water. Subsequently, the pipe is subjected to heat until its inner diameter has been enlarged sufficiently for allowing insertion over thebars 3 of thetubular members 4, 4' cut out of the pipe. Thestructural members 2 and thetubular members 4, 4' are especially quickly and easily mounted on thebars 3 by saidstructural members 2 being pushed one by one over thebars 3 simultaneously with atubular member 4 being inserted on eachbar 3 between two succeeding structural members. Thetubular members 4, 4' are now subjected to heat while they are simply retained at each end of thebars 3, preferably in such a manner that they firmly join thestructural members 2. Thetubular members 4, 4' are heated in such a manner that they reach or exceed the crystallization temperature of the plastic material with the result that said tubular members are shrunk onto thebars 3. The resulting assembling of the structural members is especially fast, easy and uncomplicated. In addition, the manufacture of the joint is particularly inexpensive, in fact the production costs have been reduced by up to 50% compared to the previously known complicated assembling methods. - The
tubular members 4, 4' can also be provided with an adhesive on their inner surfaces. As a result, the tubular members are extremely reliably fixed on thebars 3 after the shrinking thereon. When thebars 3 are made of a plastic material, such as polyethylene, the inner surfaces of thetubular members 4, 4' can be provided with a welding coating of a plastic material, such as polyethylene, of a flow temperature which is lower than the crystallization temperature of the plastic material of thetubular members 4, 4'. In this manner thetubular members 4, 4' are fixed on thebars 3 in a particularly strong and durable manner. - The
tubular members 4, 4' are preferably of a closed cross section, whereby they encircle thebars 3 completely after the shrinking. The tubular members can, however, just as well be of an open cross section, such as in form of longitudinally slit lengths of pipe, whereby the members can be pressed over the bars from the side before they are shrunk thereon. - The joint according to the invention is particularly suited for the assembling of structural members made of light and strong materials, such as carbon-fiber or KEVLAR™-reinforced epoxy or glass fiber reinforced polyester.
- The invention has been described with reference to an especially preferred embodiment, but it is in no way limited to such an embodiment. The structural members may for instance be of many other cross sections beyond the illustrated closed quandrangles. Furthermore, the members may, as mentioned above, be made of many different materials including metals, such as aluminium. The joint according to the invention is used especially in connection with the manufacture of gratings, fencing gratings, filtering units, Venetian blinds or the like.
Claims (6)
- A joint for structural members and comprising two or more structural members fixed relative to one another at regular intervals by means of bars extending through openings in said structural members as well as by means of intermediary and outer tubular locking members mounted on said bars, characterised in that the tubular locking members (4, 4') are shrunk onto the bars (3).
- A joint as claimed in claim 1, characterised in that the ends of the tubular members (4, 4') abut on the adjacent structural members (2).
- A joint as claim in claim 1 or 2, characterised in that the tubular members (4, 4') are made of a plastic material capable of being caused to enter a shrinkable state.
- A joint as claimed in one or more of the preceding claims, characterised in that the inner surfaces of the tubular members (4, 4') are provided with an adhesive coating, said inner surfaces being capable of engaging the outer surfaces of the bars (3) in connection with the mounting procedure.
- A joint as claimed in one or more of the claims 1 to 3, characterised in that the bars (3) are made of a plastic material, and that the inner surfaces of the tubular members (4, 4') are provided with a welding coating of plastic material of a flow temperature which is lower than the crystallization temperature of the plastic material of the tubular members (4, 4'), said inner surfaces of the tubular members being capable of engaging the outer surfaces of the bars (3) in connection with the mounting procedure.
- A joint as claimed in one or more of the preceding claims, characterised in that the tubular members (4, 4') and the bars (3) are of inner and outer, respectively, mating circular cross sections.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90912900T ATE99788T1 (en) | 1989-08-14 | 1990-08-14 | JOINT FOR COMPONENTS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK3984/89 | 1989-08-14 | ||
DK398489A DK168243B1 (en) | 1989-08-14 | 1989-08-14 | profile Collection |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0487604A1 EP0487604A1 (en) | 1992-06-03 |
EP0487604B1 true EP0487604B1 (en) | 1994-01-05 |
Family
ID=8128964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90912900A Expired - Lifetime EP0487604B1 (en) | 1989-08-14 | 1990-08-14 | A joint for structural members |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0487604B1 (en) |
AU (1) | AU6279990A (en) |
DE (1) | DE69005826T2 (en) |
DK (1) | DK168243B1 (en) |
ES (1) | ES2047948T3 (en) |
WO (1) | WO1991002922A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1046580C (en) * | 1992-11-23 | 1999-11-17 | 蔡英杰 | Method for making up pipe type grating |
FR2716475B1 (en) * | 1994-02-18 | 1996-05-03 | Norinco | Modular grid for closing gutters for example. |
ES2167665T3 (en) | 1997-11-04 | 2002-05-16 | Royal Packaging Industry Van L | PALLET TYPE CONTAINER WITH SUPPORT STRUCTURE IN THE FORM OF A GRILLE. |
DE69719036T2 (en) * | 1997-11-04 | 2003-11-27 | Leer Koninklijke Emballage | connection assembly |
US6688803B2 (en) | 1999-12-23 | 2004-02-10 | Royal Packaging Industries Van Leer N.V. | Connection assembly |
US6758360B2 (en) | 1999-12-23 | 2004-07-06 | Royal Packaging Industry Leer N.V. | Pallet container with grid support structure |
DE102014106739B3 (en) * | 2014-05-13 | 2015-07-23 | Gebrüder Meiser GmbH | Method and device for producing lamellar gratings |
JP6254047B2 (en) * | 2014-05-29 | 2017-12-27 | Ykk Ap株式会社 | Building exterior louver |
FI127752B (en) * | 2017-09-27 | 2019-01-31 | Alupro Oy | Arrangement and method for producing a facade grille, and a pull unit and a pull head |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2048474A (en) * | 1936-07-21 | schuhmacher | ||
US1966465A (en) * | 1932-09-19 | 1934-07-17 | Schuhmacher And Schneider Pate | Mat |
US4018188A (en) * | 1975-06-10 | 1977-04-19 | James Reuben Burdette | Reinforced concrete slat floor |
CA1174026A (en) * | 1983-04-28 | 1984-09-11 | Barry Spiers | Building component |
FR2596246B1 (en) * | 1986-03-28 | 1988-09-30 | Grimaud Freres Sa | CAILLEBOTIS |
-
1989
- 1989-08-14 DK DK398489A patent/DK168243B1/en not_active IP Right Cessation
-
1990
- 1990-08-14 DE DE90912900T patent/DE69005826T2/en not_active Expired - Fee Related
- 1990-08-14 WO PCT/DK1990/000206 patent/WO1991002922A1/en active IP Right Grant
- 1990-08-14 EP EP90912900A patent/EP0487604B1/en not_active Expired - Lifetime
- 1990-08-14 ES ES90912900T patent/ES2047948T3/en not_active Expired - Lifetime
- 1990-08-14 AU AU62799/90A patent/AU6279990A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
AU6279990A (en) | 1991-04-03 |
DK398489A (en) | 1991-02-15 |
DE69005826D1 (en) | 1994-02-17 |
WO1991002922A1 (en) | 1991-03-07 |
DE69005826T2 (en) | 1994-04-28 |
EP0487604A1 (en) | 1992-06-03 |
ES2047948T3 (en) | 1994-03-01 |
DK168243B1 (en) | 1994-02-28 |
DK398489D0 (en) | 1989-08-14 |
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