EP0740035A1 - Hollow post with accompanying mounting element - Google Patents

Hollow post with accompanying mounting element Download PDF

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Publication number
EP0740035A1
EP0740035A1 EP96201057A EP96201057A EP0740035A1 EP 0740035 A1 EP0740035 A1 EP 0740035A1 EP 96201057 A EP96201057 A EP 96201057A EP 96201057 A EP96201057 A EP 96201057A EP 0740035 A1 EP0740035 A1 EP 0740035A1
Authority
EP
European Patent Office
Prior art keywords
aperture
mounting element
pin
post
bushing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP96201057A
Other languages
German (de)
French (fr)
Inventor
Gerdy Delporte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bekaert NV SA
Original Assignee
Bekaert NV SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bekaert NV SA filed Critical Bekaert NV SA
Publication of EP0740035A1 publication Critical patent/EP0740035A1/en
Ceased legal-status Critical Current

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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
    • E04H17/02—Wire fencing, e.g. made of wire mesh
    • E04H17/10—Wire fencing, e.g. made of wire mesh characterised by the way of connecting wire to posts; Droppers
    • E04H17/124—Wire fencing, e.g. made of wire mesh characterised by the way of connecting wire to posts; Droppers connecting by one or more clamps, clips, screws, wedges or ties
    • 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
    • E04H17/16—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts using prefabricated panel-like elements, e.g. wired frames
    • E04H17/161—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts using prefabricated panel-like elements, e.g. wired frames using wire panels

Definitions

  • the invention relates to a hollow post with an accompanying mounting element for securing wires, pipes, mesh panels constructed of wire, etc. to the post, in which the post is provided with at least one aperture and in which the mounting element is provided, on the one hand, with a connecting pin specially adapted to the aperture with longitudinal openings for the formation of movable wedges or legs and, on the other hand, with a longitudinal bore hole and an accompanying nail specially adapted to the bore hole for securing the pin in the aperture.
  • Such a hollow post with an accompanying mounting element is known from the German patent 2.231.337.
  • Such hollow posts are usually constructed out of thin-walled pipe or plate material having a thickness of a few millimetres.
  • the introduction of apertures, even with accompanying mounting elements, in such a hollow post has the disadvantage that rainwater can get into the hollow post via the apertures, with all the consequent damage, such as rusting of the post, cracking of the post from freezing, etc., which considerably shortens the lifespan of the post.
  • the invention presents a hollow post with an accompanying mounting element of the type described in the introduction, in which the aperture is provided with a bushing connected to it and in which the longitudinal openings in the connecting pin extend only over a part of the length of the pin, such that the pin is provided at its base with a closure section for its insertion into the bushing.
  • Each aperture and the bushing which forms one piece with it are by preference produced by flow-drilling.
  • the process of flow-drilling which has been known for a long time, is used to produce bushing-shaped apertures in thin-walled metal workpieces, such as posts.
  • Figure 1 shows in perspective a hollow post 1 with an accompanying mounting element 2.
  • the use of hollow metal posts 1 with accompanying mounting elements 2 for securing wires, pipes and mesh panels constructed of wire to the posts 1 is generally known.
  • the hollow post 1 is by preference constructed of a thin-walled pipe or plate material having a thickness of a few millimetres.
  • the thickness of the plate material is, for example, between 1 and 4 mm, and by preference between 1.5 and 2.5 mm.
  • the mounting element 2 is by preference constructed of a plastic, such as polyamide.
  • the hollow post 1 is provided with the necessary apertures 3 for securing the mounting elements 2 to the post 1.
  • each mounting element 2 is provided with a connecting pin 4 specially adapted to the aperture 3, or, in other words, the diameter of the pin 4 is for all intents and purposes equal to the diameter of the aperture 3.
  • the diameter of the aperture 3 and the accompanying pin 4 vary, for example, between 10 and 20 mm, and by preference between 12 and 16 mm.
  • the connecting pin 4 is provided with four openings 5 which are oriented longitudinally in the form of a cross and are intended to form four wedges or legs 6 that will move under pressure.
  • the mounting element 2 is provided with a longitudinal bore hole 7 with an accompanying nail 8 which is specially adapted to the bore hole for the purpose of securing the connecting pin 4 in the accompanying aperture 3.
  • the mounting element 2 represented in Figure 1 exhibits two vertical longitudinal grooves 9 through which the vertical wires on the edges of the two wire panels to be secured to the post 1 are to pass. It is evident that the mounting element 2 can also be provided with other grooves or other means for holding wires, pipes, etc.
  • the aperture 3 is provided with a bushing 10 which forms one piece with it and which is of the same diameter as the diameter of the aperture 3.
  • the height of the bushing 10 is preferably equal to between two and four times the thickness of the plate, which means for example that it is between 3 and 6 mm for a plate thickness of 1.5 mm.
  • the aperture 3, the bushing 10 and the sealing rim of the aperture 3 are by preference produced in the post 1 in one operation, as with the already known flow-drilling process.
  • the flow-drilling process is a method in which apertures in the form of bushings are produced in thin-walled metal workpieces by means of flow-drilling; in other words, the flow-drilling process makes it possible to bore apertures 3 in thin-walled metal posts 1 without removing metal, while at the same time forming a bushing 10.
  • the longitudinal openings 5 in the connecting pin 4 which form the four movable wedges or legs 6 run only over a part of the length of the pin 4, such that the connecting pin 4 is provided at its base with a closure section 11 with an entirely closed circumference having a height of a few millimetres.
  • Figures 2a, 2b and 2c show in cross-section the consecutive phases of the process of securing the mounting element 2 on the post 1.
  • Figure 2a shows in cross-section the mounting element 2 with the nail 8 in the accompanying longitudinal bore hole 7 before the introduction of the connecting pin 4 into the accompanying aperture 3. It is clear from Figure 2a that between the four wedge-shaped legs 6 a cone-shaped opening or cavity 12 has been introduced to receive the pointed end of the nail 8.
  • Figure 2b shows the mounting element 2, with the connecting pin 4 already fully settled in the aperture 3 and the bushing 10, but before the nail 8 has been completely driven into the longitudinal bore hole 7.
  • Figure 2b clearly shows that the legs or wedges 6 have not yet been deformed.
  • the bushing 10 and the closure section 11 must fit well into one another or overlap one another over a sufficient distance of a few millimetres to obtain a watertight seal of the pin 4 in the bushing 10.
  • the longitudinal openings 5 now run up to the bushing 10 or even for a small distance into the bushing 10.
  • Figure 2c shows the mounting element 2, with the nail 8 completely driven into the element 2.
  • the legs or wedges 6 are greatly displaced or deformed, which results in the mounting element 2 being firmly secured in the aperture 3 and the bushing 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Connection Of Plates (AREA)
  • Installation Of Indoor Wiring (AREA)

Abstract

The invention relates to a hollow post (1) with an accompanying mounting element (2) for securing wires, pipes and mesh panels constructed of wire to the post (1), in which the post (1) is provided with at least one aperture (3) and in which the mounting element (2) is provided, on the one hand, with a connecting pin (4) specially adapted to the aperture (3) with longitudinal openings (5) for the formation of movable wedges (6) and, on the other hand, with a longitudinal bore hole (7) and an accompanying nail (8) specially adapted to the bore hole (7) for securing the pin (4) in the aperture (3), in which the aperture (3) is provided with a bushing (10) which forms one piece with it and the longitudinal openings (5) in the connecting pin (4) only run over a part of the length of the pin (4), such that the pin (4) is provided at its base with a closure section (11) for its insertion into the bushing (10).

Description

  • The invention relates to a hollow post with an accompanying mounting element for securing wires, pipes, mesh panels constructed of wire, etc. to the post, in which the post is provided with at least one aperture and in which the mounting element is provided, on the one hand, with a connecting pin specially adapted to the aperture with longitudinal openings for the formation of movable wedges or legs and, on the other hand, with a longitudinal bore hole and an accompanying nail specially adapted to the bore hole for securing the pin in the aperture.
  • Such a hollow post with an accompanying mounting element is known from the German patent 2.231.337. Such hollow posts are usually constructed out of thin-walled pipe or plate material having a thickness of a few millimetres. The introduction of apertures, even with accompanying mounting elements, in such a hollow post has the disadvantage that rainwater can get into the hollow post via the apertures, with all the consequent damage, such as rusting of the post, cracking of the post from freezing, etc., which considerably shortens the lifespan of the post.
  • It is an object of the present invention to remedy the aforementioned disadvantage.
  • To this end, the invention presents a hollow post with an accompanying mounting element of the type described in the introduction, in which the aperture is provided with a bushing connected to it and in which the longitudinal openings in the connecting pin extend only over a part of the length of the pin, such that the pin is provided at its base with a closure section for its insertion into the bushing.
  • By thus ensuring that the bushing and the accompanying closure section of the connecting pin overlap one another over a sufficient distance (a few millimetres) and/or fit closely into each other, a watertight seal of the connecting pin in the bushing is obtained, by means of which the aforementioned disadvantage is totally eliminated.
  • Each aperture and the bushing which forms one piece with it are by preference produced by flow-drilling. The process of flow-drilling, which has been known for a long time, is used to produce bushing-shaped apertures in thin-walled metal workpieces, such as posts.
  • The invention will now be described in greater detail on the basis of the accompanying drawing. In the drawing :
    • Figure 1
    shows in perspective a portion of a hollow post with an accompanying mounting element, and
    Figures 2a, 2b and 2c
    show in cross-section the subsequent phases of the process of securing the mounting element to the post.
  • Figure 1 shows in perspective a hollow post 1 with an accompanying mounting element 2. The use of hollow metal posts 1 with accompanying mounting elements 2 for securing wires, pipes and mesh panels constructed of wire to the posts 1 is generally known.
  • The hollow post 1 is by preference constructed of a thin-walled pipe or plate material having a thickness of a few millimetres. The thickness of the plate material is, for example, between 1 and 4 mm, and by preference between 1.5 and 2.5 mm. The mounting element 2 is by preference constructed of a plastic, such as polyamide.
  • The hollow post 1 is provided with the necessary apertures 3 for securing the mounting elements 2 to the post 1. For this purpose, each mounting element 2 is provided with a connecting pin 4 specially adapted to the aperture 3, or, in other words, the diameter of the pin 4 is for all intents and purposes equal to the diameter of the aperture 3. The diameter of the aperture 3 and the accompanying pin 4 vary, for example, between 10 and 20 mm, and by preference between 12 and 16 mm. The connecting pin 4 is provided with four openings 5 which are oriented longitudinally in the form of a cross and are intended to form four wedges or legs 6 that will move under pressure.
  • Moreover, the mounting element 2 is provided with a longitudinal bore hole 7 with an accompanying nail 8 which is specially adapted to the bore hole for the purpose of securing the connecting pin 4 in the accompanying aperture 3.
  • The mounting element 2 represented in Figure 1 exhibits two vertical longitudinal grooves 9 through which the vertical wires on the edges of the two wire panels to be secured to the post 1 are to pass. It is evident that the mounting element 2 can also be provided with other grooves or other means for holding wires, pipes, etc.
  • According to the invention, the aperture 3 is provided with a bushing 10 which forms one piece with it and which is of the same diameter as the diameter of the aperture 3. The height of the bushing 10 is preferably equal to between two and four times the thickness of the plate, which means for example that it is between 3 and 6 mm for a plate thickness of 1.5 mm. The aperture 3, the bushing 10 and the sealing rim of the aperture 3 are by preference produced in the post 1 in one operation, as with the already known flow-drilling process. The flow-drilling process is a method in which apertures in the form of bushings are produced in thin-walled metal workpieces by means of flow-drilling; in other words, the flow-drilling process makes it possible to bore apertures 3 in thin-walled metal posts 1 without removing metal, while at the same time forming a bushing 10.
  • An extra advantage of flow-drilling is the reinforcement which is created around the aperture 3 thus formed. One of the trademarks that the flow-drilling process is known under is 'FLOWDRILL' of the Dutch company FLOWDRILL B.V. based in Bosch and Duin.
  • According to the invention, the longitudinal openings 5 in the connecting pin 4 which form the four movable wedges or legs 6 run only over a part of the length of the pin 4, such that the connecting pin 4 is provided at its base with a closure section 11 with an entirely closed circumference having a height of a few millimetres.
  • Figures 2a, 2b and 2c show in cross-section the consecutive phases of the process of securing the mounting element 2 on the post 1.
  • Figure 2a shows in cross-section the mounting element 2 with the nail 8 in the accompanying longitudinal bore hole 7 before the introduction of the connecting pin 4 into the accompanying aperture 3. It is clear from Figure 2a that between the four wedge-shaped legs 6 a cone-shaped opening or cavity 12 has been introduced to receive the pointed end of the nail 8.
  • Figure 2b shows the mounting element 2, with the connecting pin 4 already fully settled in the aperture 3 and the bushing 10, but before the nail 8 has been completely driven into the longitudinal bore hole 7. Figure 2b clearly shows that the legs or wedges 6 have not yet been deformed. The bushing 10 and the closure section 11 must fit well into one another or overlap one another over a sufficient distance of a few millimetres to obtain a watertight seal of the pin 4 in the bushing 10. By preference, the longitudinal openings 5 now run up to the bushing 10 or even for a small distance into the bushing 10.
  • Figure 2c shows the mounting element 2, with the nail 8 completely driven into the element 2. The legs or wedges 6 are greatly displaced or deformed, which results in the mounting element 2 being firmly secured in the aperture 3 and the bushing 10.

Claims (2)

  1. Hollow post (1) with an accompanying mounting element (2) for securing wires, pipes and mesh panels constructed of wire to the post (1), in which the post (1) is provided with at least one aperture (3) and in which the mounting element (2) is provided, on the one hand, with a connecting pin (4) specially adapted to the aperture (3) with longitudinal openings (5) for the formation of movable wedges (6) and, on the other hand, with a longitudinal bore hole (7) and an accompanying nail (8) specially adapted to the bore hole for securing the pin (4) in the aperture (3), with the characteristic that the aperture (3) is provided with a bushing (10) which forms one piece with it and that the longitudinal openings (5) in the connecting pin (4) only run over a part of the length of the pin (4), such that the pin (4) is provided at its base with a closure section (11) for its insertion into the bushing (10).
  2. Hollow post (1) with mounting element (2) according to claim 1, with the characteristic that the aperture (3) and the bushing (10) which forms one piece with it have been produced by means of flow-drilling.
EP96201057A 1995-04-26 1996-04-19 Hollow post with accompanying mounting element Ceased EP0740035A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9500378 1995-04-26
BE9500378A BE1009332A3 (en) 1995-04-26 1995-04-26 Hollow pole as associated with fixing element.

Publications (1)

Publication Number Publication Date
EP0740035A1 true EP0740035A1 (en) 1996-10-30

Family

ID=3888943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96201057A Ceased EP0740035A1 (en) 1995-04-26 1996-04-19 Hollow post with accompanying mounting element

Country Status (2)

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EP (1) EP0740035A1 (en)
BE (1) BE1009332A3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0937842A1 (en) * 1998-02-20 1999-08-25 Gust. Alberts GmbH & Co. KG Wire grip for a fence post
GB2411432A (en) * 2004-02-28 2005-08-31 Advanced Bolting Solutions Ltd Fastener for linear elements comprising expandable boss
EP1712711A1 (en) 2005-04-14 2006-10-18 Betafence Holding NV Fencing system
JP2019070271A (en) * 2017-10-10 2019-05-09 朝日スチール工業株式会社 Pillar

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2231337A1 (en) * 1972-06-27 1974-01-24 Walter Bethke DOWEL CLAMP
DE2950355A1 (en) * 1979-12-14 1981-06-19 Vw-Werke Vincenz Wiederholt, 4755 Holzwickede Grooved wire bracket for tubular fence post - is fixed by driving pin into split spigot in post wall hole using pin to close groove above wire
EP0057039A1 (en) * 1981-01-22 1982-08-04 Flowdrill B.V. Flow drill for the provision of holes in sheet material
GB2250757A (en) * 1990-10-30 1992-06-17 Tinsley Wire Mesh fencing panel securing means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2231337A1 (en) * 1972-06-27 1974-01-24 Walter Bethke DOWEL CLAMP
DE2950355A1 (en) * 1979-12-14 1981-06-19 Vw-Werke Vincenz Wiederholt, 4755 Holzwickede Grooved wire bracket for tubular fence post - is fixed by driving pin into split spigot in post wall hole using pin to close groove above wire
EP0057039A1 (en) * 1981-01-22 1982-08-04 Flowdrill B.V. Flow drill for the provision of holes in sheet material
GB2250757A (en) * 1990-10-30 1992-06-17 Tinsley Wire Mesh fencing panel securing means

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0937842A1 (en) * 1998-02-20 1999-08-25 Gust. Alberts GmbH & Co. KG Wire grip for a fence post
GB2411432A (en) * 2004-02-28 2005-08-31 Advanced Bolting Solutions Ltd Fastener for linear elements comprising expandable boss
EP1712711A1 (en) 2005-04-14 2006-10-18 Betafence Holding NV Fencing system
JP2019070271A (en) * 2017-10-10 2019-05-09 朝日スチール工業株式会社 Pillar

Also Published As

Publication number Publication date
BE1009332A3 (en) 1997-02-04

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