WO1992014935A1 - Vis de fixation - Google Patents

Vis de fixation Download PDF

Info

Publication number
WO1992014935A1
WO1992014935A1 PCT/GB1992/000327 GB9200327W WO9214935A1 WO 1992014935 A1 WO1992014935 A1 WO 1992014935A1 GB 9200327 W GB9200327 W GB 9200327W WO 9214935 A1 WO9214935 A1 WO 9214935A1
Authority
WO
WIPO (PCT)
Prior art keywords
fastener anchor
fastener
slots
body portion
anchor
Prior art date
Application number
PCT/GB1992/000327
Other languages
English (en)
Inventor
Peter Kelvin Fowler
Terence Robert Fowler
David Geoffrey Jenman
Charles Henry Ryland
Original Assignee
Peter Kelvin Fowler
Terence Robert Fowler
David Geoffrey Jenman
Charles Henry Ryland
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 Peter Kelvin Fowler, Terence Robert Fowler, David Geoffrey Jenman, Charles Henry Ryland filed Critical Peter Kelvin Fowler
Publication of WO1992014935A1 publication Critical patent/WO1992014935A1/fr

Links

Classifications

    • 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
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/002—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose self-cutting
    • 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
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
    • F16B13/124—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting a threaded element, e.g. screw or bolt
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws

Definitions

  • This invention relates to a fastener anchor.
  • Fastener anchors are well known and they are usually employed for enabling fixings to be made in friable sheet material such for example as plasterboard.
  • the friable sheet material may form walls, partitions or ceilings.
  • the known fastener anchors are often not satisfactory in that they are expensive to produce and/or require a bore to be drilled in the sheet material to which they are to be fixed and/or they do not form a sufficiently good anchor into which a threaded fastener such as a threaded screw or a threaded bolt can subsequently be fixed.
  • a fastener anchor comprising a head, a body portion, an external thread on the body portion, and a pair of slots which extend longitudinally of the body portion and which also extend towards each other from opposite sides of the body portion.
  • the external thread on the body portion enables the fastener anchor to be screwed into an appropriate surface without the need to first drill a bore in the surface.
  • the slots allow the body portion to expand, thereby helping to ensure that the fastener anchor remains a firm fit in the surface in which it has been located.
  • the fastener anchor can be made of a mouldable plastics material so that it can easily and cheaply be produced.
  • the fastener anchor is one in which the slots extend past each other, and in which the slots are offset from each other, whereby a membrane member between the slots is created.
  • the slots may extend past each other by, for example, a distance of 3mm,
  • the slots may be offset from each other by, for example, a distance of 0.25mm.
  • the presence of the membrane member is advantageous in that it fills up the screw thread of a screw threaded fastener, for example a screw or a bolt, as the screw threaded fastener is screwed into the fastener anchor. Also, the membrane member cooperates with the offset slots to enable the screw threaded fastener easily to be screwed in a straight line along the fastener anchor.
  • the fastener anchor may be one in which the slots are in line with each other, and in which the slots stop short of each other.
  • the fastener anchor is one in which one slot is longer than the other slot.
  • the longest slot may be 1 mm longer than the other slot.
  • the fastener anchor may be directly driven by a hammer or other object into some material
  • the fastener anchor will usually be one in which the head includes a formation for enabling the fastener anchor to be screwed into a surface.
  • the formation will usually be a recess.
  • the recess may be a slot for receiving a blade screwdriver, or the recess may be a star-shaped recess for receiving a Phillips or a Pozidrive (trade mark) screwdriver.
  • the fastener anchor is one in which the slots extend in a straight line from the recess to a Position, adjacent a tip of the fastener anchor.
  • the slots extend in a straight line from a position remote from the recess to a position adjacent a tip of the fastener anchor.
  • the fastener anchor may be one in which the slots extend in a straight line towards a tip of the fastener anchor, but then extend to a side of the fastener anchor. The use of slots extending to a side of the fastener anchor helps threaded fasteners which are longer than the fastener anchor to break through the fastener anchor at a predetermin position.
  • the fastener anchor will be one in which the tip is a pointed tip.
  • Other tips for the fastener anchor may however be employed.
  • the recess nay advantageously extend into a dimpled portion forming a lead-in for a threaded fastener.
  • the dimpled portion allows the threaded fastener easily to get a straight start as it is screwed into the fastener anchor.
  • the dimpled portion may be 2mm deep.
  • the head of the fastener anchor is preferably a flat head so that the head does not project substantially from a surface of a member in whi-n the fastener anchor is located.
  • the body portion is preferably a tapering body portion.
  • the body portion may however be a parallel sided body portion if desired.
  • the fastener anchor will usually be made of a plastics material.
  • a presently preferred plastics material is 50% glass filled nylon (registered trade mark).
  • Other types of plastics material such for example as ABS may be employed.
  • the fastener anchor may be made in a two part mould.
  • Each part of the mould may have a blade for forming one of the slots in the fastener anchor.
  • the blades are separately formed from the remainder of the mould so that, if a blade should break, it can easily be replaced without having to replace the entire mould.
  • Figure 1 is a side view of a first fastener anchor
  • Figure 2 is a cross section through the fastener anchor as shown in Figure 1;
  • Figure 3 shows the fastener anchor of Figure 1 being fitted into a sheet of plasterboard
  • Figure 4 is a side view of a second fastener anchor
  • Figure 5 is a longitudinal section through the second fastener anchor shown in Figure 4;
  • Figure 6 is a side view of a third fastener anchor.
  • Figure 7 is a longitudinal section through the third fastener anchor shown in Figure 6.
  • a fastener anchor 2 comprising a head 4, a tapering body portion 5, ⁇ J ⁇ . external thread 8 on the body portion 6, and a pair of slots 10.
  • the slots 10 extend longitudinally of the body portion 6 as shown in Figure 1. As shown in Figure 2, the slots 10 also extend towards each other from opposite sides of the body portion 6. The slots 10 extend past each other as shown in Figure 2. The slots 10 are offset from each other, also as shown in Figure 2, whereby a membrane member 12 between the slots 10 is created. By way of example, it is mentioned that the slots 10 may extend past each other by a distance of 3m and the slots 10 may be offset from each other by a distance of 0.25mm.
  • One slot 10 is slightly longer than the other slot 10.
  • the head 4 includes a formation in the form of a recess 16 for receiving a screwdriver 18, only part of which is shown in Figure 3.
  • the recess 16 is a star- shaped recess 16 for receiving the complementary shaped end 20 of the screwdriver 18.
  • the slots 10 extend from the end of the recess 16 to a position 22 adjacent a pointed tip 24 of the body portion 6.
  • the tip 24 helps to enable tne fastener anchor 2 initially to pierce the plasterboard 14 and then to be screwed through the plaster ⁇ board 14 as shown in Figure 3.
  • a threaded fastener in the form of a screw 26 can then be screwed into the fastener anchor 2.
  • the screw 26 has a head 28 which locates in the recess 16 when the screw 26 is screwed fully home into the fastener anchor 2. As the screw 26 is screwed through the fastener anchor 2, it destroys the membrane member 12 and the material of the membrane member 12 wraps around the thread 30 of the screw 26, thus helping to keep the screw 26 a firm and positive fit in the fastener anchor 2.
  • the screw 26 tends to expand the body portion 6 of the fastener anchor 2 so that the fastener anchor 2 becomes a yet tighter fit in the plasterboard 14.
  • the external thread 8 is a large coarse external thread 8 which in itself gives a good grip in the plaster ⁇ board 14.
  • the head 4 is a flat head so that, as can be seen in Figure 3, the head 4 does not project substantially beyond the surface 32 of the plasterboard 14 when the fastener anchor 2 is screwed fully home into the plasterboard 14.
  • the fastener anchor 2 is made of 50% glass filled nylon although it may be made of other plastics materials if desired.
  • FIG. 4 there is shown a second fastener anchor 2 in which similar parts as in Figures 1 - 3 have been given similar reference numerals for ease of comparison and understanding.
  • the slots 10 cause the body portion 6 to be formed into two diverging parts which form an especially good fixing for cavity wall fixings of the type illustrated in Figure 3 where the fastener anchor 2 projects completely through the plaster ⁇ board 14.
  • the slots 10 are of the same length but they have an end portion 40 which extends to one side of the body portion 6 and breaks through the body portion 6 at position 42. If a screw 26 is used which is longer than the fastener anchor 2, the screw 26 breaks through the body portion 6 at the position 42.
  • Figure 7 illustrates how the dimpled portion 38 of
  • Figure 5 has been formed into a slightly longer parallel- sided bore portion 38.
  • the fastener anchors 2 of the present invention can easily and cheaply be formed by moulding.
  • the external thread 8 enables them easily to be fixed into the plaster ⁇ board 14 in a firm and positive manner.
  • Fastener anchors 2 are such that the body portion 6 is basically a solid body portion 6 and the slots 10 are easily formed.
  • the membrane member 12 is useful for giving the screw 26 something to bite on as it screws through the fastener anchor 2 and the destroyed material from the membrane member 12 advantageously fills the threads 30 of the screw 26.
  • the body portion 6 is shown to be a tapering body portion ⁇ but the body portion 6 could be a parallel sided body portion if desired.
  • the fastener anchors 2 can be inserted into any suitable and appropriate material.
  • the end portion 40 extends at approximately 45° to the main part of the slots 10 but it could extend at any other suitable and appropriate angle.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)

Abstract

Vis de fixation (2) comprenant une tête (12), un corps (6), un filetage extérieur (8) situé sur le corps (6) et une paire de fentes (10) s'étendant dans le sens de la longueur du corps (6) et s'étendant également l'une vers l'autre à partir des côtés opposés du corps (6).
PCT/GB1992/000327 1991-02-25 1992-02-24 Vis de fixation WO1992014935A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919103859A GB9103859D0 (en) 1991-02-25 1991-02-25 A fastener anchor
GB9103859.6 1991-02-25

Publications (1)

Publication Number Publication Date
WO1992014935A1 true WO1992014935A1 (fr) 1992-09-03

Family

ID=10690506

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/000327 WO1992014935A1 (fr) 1991-02-25 1992-02-24 Vis de fixation

Country Status (3)

Country Link
AU (1) AU1275492A (fr)
GB (1) GB9103859D0 (fr)
WO (1) WO1992014935A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582374A2 (fr) * 1992-06-29 1994-02-09 PLASTERMASTER (International Limited) Cheville d'ancrage
GB2275979A (en) * 1993-03-09 1994-09-14 Cobra Marketing Limited Anchorage for screws in plasterboard
GB2276689B (en) * 1993-02-17 1996-09-04 David Dennis Dunkley Anchoring fasteners
WO2000037808A1 (fr) * 1998-12-21 2000-06-29 Katsuo Ito Element d'ancrage de panneau ameliore
DE19931794A1 (de) * 1999-07-08 2001-02-01 Tox Duebel Werk Isolierdübel
DE19956906A1 (de) * 1999-11-26 2001-06-21 Tox Duebel Werk Isolierdübel
FR2915542A1 (fr) * 2007-04-27 2008-10-31 Prospection & Inventions Cheville d'ancrage fendue pour materiau friable

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH193876A (de) * 1936-11-16 1937-11-15 Jordan Ernst Mauerdübel für ein Befestigungsglied, wie z. B. Nägel, Schrauben.
US3232163A (en) * 1963-05-16 1966-02-01 United Shoe Machinery Corp Plastic screw anchor
FR2357769A1 (fr) * 1976-07-07 1978-02-03 Schefer Arnold Cheville expansible
DE2737857A1 (de) * 1977-08-23 1979-03-08 Hachtel F & G Duebel aus kunststoff
DE9006969U1 (de) * 1990-06-22 1990-10-11 Yeh, Ming-Tian, Changhua Dübel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH193876A (de) * 1936-11-16 1937-11-15 Jordan Ernst Mauerdübel für ein Befestigungsglied, wie z. B. Nägel, Schrauben.
US3232163A (en) * 1963-05-16 1966-02-01 United Shoe Machinery Corp Plastic screw anchor
FR2357769A1 (fr) * 1976-07-07 1978-02-03 Schefer Arnold Cheville expansible
DE2737857A1 (de) * 1977-08-23 1979-03-08 Hachtel F & G Duebel aus kunststoff
DE9006969U1 (de) * 1990-06-22 1990-10-11 Yeh, Ming-Tian, Changhua Dübel

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582374A2 (fr) * 1992-06-29 1994-02-09 PLASTERMASTER (International Limited) Cheville d'ancrage
EP0582374A3 (fr) * 1992-06-29 1994-02-16 Plastermaster International Li
GB2276689B (en) * 1993-02-17 1996-09-04 David Dennis Dunkley Anchoring fasteners
GB2275979A (en) * 1993-03-09 1994-09-14 Cobra Marketing Limited Anchorage for screws in plasterboard
GB2275979B (en) * 1993-03-09 1996-07-10 Cobra Marketing Limited Improvements in or relating to self-drilling anchorages
WO2000037808A1 (fr) * 1998-12-21 2000-06-29 Katsuo Ito Element d'ancrage de panneau ameliore
DE19931794A1 (de) * 1999-07-08 2001-02-01 Tox Duebel Werk Isolierdübel
DE19931794C2 (de) * 1999-07-08 2003-10-02 Tox Duebel Werk Isolierdübel
DE19956906A1 (de) * 1999-11-26 2001-06-21 Tox Duebel Werk Isolierdübel
DE19956906C2 (de) * 1999-11-26 2003-10-30 Tox Duebel Werk Isolierdübel
FR2915542A1 (fr) * 2007-04-27 2008-10-31 Prospection & Inventions Cheville d'ancrage fendue pour materiau friable
WO2008132592A1 (fr) * 2007-04-27 2008-11-06 Société De Prospection Et D' Inventions Techniques Spit Cheville d'ancrage à fente pour matériau friable

Also Published As

Publication number Publication date
AU1275492A (en) 1992-09-15
GB9103859D0 (en) 1991-04-10

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