WO1993013280A1 - A device for joining floor boards - Google Patents

A device for joining floor boards Download PDF

Info

Publication number
WO1993013280A1
WO1993013280A1 PCT/DK1992/000394 DK9200394W WO9313280A1 WO 1993013280 A1 WO1993013280 A1 WO 1993013280A1 DK 9200394 W DK9200394 W DK 9200394W WO 9313280 A1 WO9313280 A1 WO 9313280A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
shaped body
shaped
legs
webs
Prior art date
Application number
PCT/DK1992/000394
Other languages
French (fr)
Inventor
C. J. Skovbo Jørgensen
Erik Sepstrup
Hans Storm
Original Assignee
Junckers Industrier A/S
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 Junckers Industrier A/S filed Critical Junckers Industrier A/S
Priority to EP93902099A priority Critical patent/EP0624221A1/en
Priority to JP5511367A priority patent/JPH07502580A/en
Publication of WO1993013280A1 publication Critical patent/WO1993013280A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2201/00—Joining sheets or plates or panels
    • E04F2201/05—Separate connectors or inserts, e.g. pegs, pins, keys or strips
    • E04F2201/0517—U- or C-shaped brackets and clamps

Definitions

  • the invention relates to a device for joining floor boards and comprising an elongated, plate-shaped body with a leg adapted to engage a longitudinal groove in each of the adjoining floor boards.
  • Devices for mounting floor boards are known in form of substantially U-shaped clips.
  • the legs of these clips are formed by way of bending and are optionally provided with barbs in such a manner that they are locked in grooves on the bottom side of the floor boards.
  • Such clips are for instance known from EP-PS No. 126,764.
  • the object of the clips is to keep adjoining floor boards together and optionally to press said boards together.
  • both the legs of the clips and the grooves receiving said legs can be shaped rather large without strict tolerance standards without acting on the already laid flooring.
  • a flooring depends highly on the accuracy of the control of each floor board when subjected to oscil ⁇ lating effects, such as moisture.
  • the object of the invention is therefore to provide a device suited for use in connection with thin floorings , especially floorings made of solid undressed wood and subjected to a varying moisture of the atmosphere, and where said device allows a simple and fast laying of the looring.
  • the device according to the invention is characterised in that the legs are shaped at a distance from the ends of the plate—shaped body.
  • the resulting flooring can be mounted in a relatively easy and fast manner at the same time as it is reliable, which is due to the fact that the devices are fixedly and non— iltably arranged in each groove, said device comprising members abutting the bottom side of the floor board on each side of the groove.
  • the device is advan ⁇ tageous both, during the laying procedure and in the already laid flooring.
  • the device is fastened by one leg thereof being arranged in the groove of one board where it is secured in such a manner that it cannot be moved, i.e. it cannot be turned or tilted away from the bottom side of the floor board.
  • the device does not tend to fall out during the laying of the board in the desired horizontal posi ⁇ tion so as to be ready for being joined with yet another board.
  • the groove of the other board is easily caused to engage the second leg of the device while the boards are pushed together by means of the tongue/groove connec ⁇ tion. If the device had been able to tilt relative to the first groove it engaged, it would have fallen out easily and thereby destroyed the rim of the relatively accurately shaped groove and optionally also the fine shaping tolerance of the leg. Then it would often be necessary to replace the device in question by a new device and arrange said new device on a new location relative to the groove.
  • the connection between the device according to the invention and each board is thus capable of absorbing the torque in both directions about an axis of rotation extending along the groove of each board. As a result, a reliable keeping together of the boards of the already laid flooring is ensured.
  • the legs of the device may be shaped by bending two webs projecting away from one another, said webs resulting from a punching out of a substantially I-shaped opening in each end of the plate- shaped body, where the two transverse legs of the I extend in the longitudinal direction of the plate—shaped body.
  • the resulting device is particularly simple with a reliable, symmetrical structure.
  • the bent webs may according to the invention be of a substantially hook-shaped cross section, whereby a shape is obtained which ensures that the legs are easily inserted in a groove and are locked therein.
  • the bent webs may be bent substantially perpendicular from the plate-shaped body at a distance from the location where the webs extend from the plate-shaped body and project into the punched out portion.
  • Fig. 1 is a top view of a preferred embodiment of a device according to the invention.
  • Fig. 2 is a sectional view on a larger scale taken along the line II-II of Fig. 1, and
  • Fig. 3 illustrates a portion of a flooring laid by means of the device of Figs. 1 and 2.
  • the device shown in the drawing comprises an elongated, plate-shaped body 1 of a substantially rectangular shape.
  • the device comprises an upwardly projecting leg 2, 3 at each end, said legs being shaped integral with the plate—shaped body 1 by way of bending.
  • the legs 2 and 3 are produced in connection with their respective punched out I- or H—shaped opening 4 and 5, respectively. These openings 4 and 5 are shaped symmet ⁇ rically about the longitudinal central axis of the plate—shaped body 1 a short distance from each end of said plate—shaped body.
  • the parallel legs of the I or the H extend parallel to the longitudinal symmetrical axis of the plate—shaped body 1.
  • the legs 2 and 3 are shaped by the punched out web 6 and 7, respectively, being bent. The webs 6 and 7 project from the side of the opening 4, 5 adjacent the centre of the plate—shaped body 1 and Into said opening.
  • each leg 2, 3 is bent out from the plane of the plate—shaped body 1 a short distance from the connection of the web 6, 7 with the plate-shaped body 1 in such a manner that a short portion 8 and 9, respectively, of the web is flushing with the plate-shaped body 1.
  • the radius of curvature of each leg 2, 3 at the transition 10 to the plate-shaped body 1 can therefore be shaped relatively small.
  • Each leg 2 and 3 is of a substantially hook-shaped form with the result that a sharp edge 11 is formed.
  • the sharp edge ensures a good engagement of the leg and the board in question.
  • the legs 2 and 3 are, as mentioned, shaped on the side of the openings 4 and 5 adjacent the centre of the plate-shaped body 1 while being simultaneously bent in such a manner that the sharp edge 11 on the hook-shaped leg 2 and 3 faces away from the centre of the plate- shaped body 1.
  • the legs 2 and 3 provide a particularly good resistance against the tendency of the floor boards to expand at the same time as the sharp edge 11 has a tendency to bite itself into the board in question by cutting into the wood on the same side as the portion of the plate—shaped body which extends from the legs 2, 3 to the ends.
  • a self-in- creasing resistance is obtained against a turning or tilting of the device 1 relative to each board.
  • Fig. 3 illustrates two abutting floor boards 12 and 13 engaging one another by means of a groove/tongue connec- tion 14.
  • Each board 12 and 13 comprises a longitudinal groove 14 and 15, respectively, on the bottom side, said grooves being manufactured with an accurate position relative and parallel to the longitudinal rims of the board 12 and 13.
  • the grooves 14 and 15 are simultaneous- ly manufactured with relatively fine tolerances.
  • the boards 12 and 13 are mounted on the bottom side by means of a device of the type shown in igs. 1 and 2, where the plate—shaped body 1 extends transverse to the groove/tongue connection 14 of the boards 12 and 13 with a leg 2, 3 received in their re ⁇ spective groove 14, 15. It appears clearly, that the plate—shaped body extends to each side relative to each groove 14, 15 and is thereby abuttingly arranged against the boards 12 and 13 on both sides of the grooves 14 and 15.
  • the device according to the Invention is preferably made of plate—shaped spring steel of a thickness of about 0.75 mm, a width of 20 mm, and a length of 135 mm.
  • the height of the legs relative to the plate-shaped body 1 is suitably of a dimension 3.1 mm, whereas their mutual distance is 111 mm.
  • the distance between the side of the legs 2, 3 perpendicular to the plate-shaped body 1 ad ⁇ jacent the centre and the associated sharp edge 11 Is advantageously about 2.5 mm.
  • Such a device is suited for use in connection with 8 mm thick solid boards of a width of 113.9 mm.
  • the associated grooves are suitably 2.35 mm wide and 3.5 mm deep. Boards of a width of 129.0 mm involve the use of devices made of spring steel of a length of 150 mm.
  • the mutual distance of the legs is 126.5 mm. All the remaining dimensions are the same as above.
  • Each leg may for instance be shaped as a double leg adjacent both longitudinal sides of the plate—shaped body with an Intermediary portion extending as an extension past the legs to the ends of the plate—shaped body 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)

Abstract

A device for joining floor boards comprises an elongated, plate-shaped body (1) with legs (2, 3) adapted to engage a longitudinal groove (14, 15) in each of the adjoining floor boards (12, 13). The legs (2, 3) are shaped at a distance from the ends of the plate-shaped body (1) in such a manner that the plate-shaped body (1) supports the boards (12, 13) on each side of the grooves (14 and 15).

Description

Title: A device for joining floor boards
Technical Field
The invention relates to a device for joining floor boards and comprising an elongated, plate-shaped body with a leg adapted to engage a longitudinal groove in each of the adjoining floor boards.
Background Art
Devices for mounting floor boards are known in form of substantially U-shaped clips. The legs of these clips are formed by way of bending and are optionally provided with barbs in such a manner that they are locked in grooves on the bottom side of the floor boards. Such clips are for instance known from EP-PS No. 126,764. The object of the clips is to keep adjoining floor boards together and optionally to press said boards together. As it is a question of relatively thick floor boards of a thickness of from approximately 12 to 22 mm, both the legs of the clips and the grooves receiving said legs can be shaped rather large without strict tolerance standards without acting on the already laid flooring. However, a flooring depends highly on the accuracy of the control of each floor board when subjected to oscil¬ lating effects, such as moisture. When it is a question of production of floorings made of relatively thin, solid floor boards of undressed wood and of a thickness of less than about 12 mm, it turned out to be impossible to obtain completely satisfactory results by means of the existing clips. Accordingly, it has only been possible previously to put down such floorings by gluing the boards together or by carrying out a hidden nailing at the tongue/groove connections. Both fastening methods can cause problems when the flooring is subjected to an oscillating moisture of the atmosphere. A low moistur of the atmosphere causes formation of chinks in the flooring, and a high moisture of the atmosphere has the effect that the flooring has a tendency to bulge up. The thinner the floor board is the faster the moisture in the wood and consequently also the size of the floor board changes or adjusts to the surroundings. Thin floorings have therefore necessitated development of a device eliminating these drawbacks.
Description of the Invention
The object of the invention is therefore to provide a device suited for use in connection with thin floorings , especially floorings made of solid undressed wood and subjected to a varying moisture of the atmosphere, and where said device allows a simple and fast laying of the looring.
The device according to the invention is characterised in that the legs are shaped at a distance from the ends of the plate—shaped body.
The resulting flooring can be mounted in a relatively easy and fast manner at the same time as it is reliable, which is due to the fact that the devices are fixedly and non— iltably arranged in each groove, said device comprising members abutting the bottom side of the floor board on each side of the groove. The device is advan¬ tageous both, during the laying procedure and in the already laid flooring. During the laying procedure the device is fastened by one leg thereof being arranged in the groove of one board where it is secured in such a manner that it cannot be moved, i.e. it cannot be turned or tilted away from the bottom side of the floor board. As a result, the device does not tend to fall out during the laying of the board in the desired horizontal posi¬ tion so as to be ready for being joined with yet another board. The groove of the other board is easily caused to engage the second leg of the device while the boards are pushed together by means of the tongue/groove connec¬ tion. If the device had been able to tilt relative to the first groove it engaged, it would have fallen out easily and thereby destroyed the rim of the relatively accurately shaped groove and optionally also the fine shaping tolerance of the leg. Then it would often be necessary to replace the device in question by a new device and arrange said new device on a new location relative to the groove. The connection between the device according to the invention and each board is thus capable of absorbing the torque in both directions about an axis of rotation extending along the groove of each board. As a result, a reliable keeping together of the boards of the already laid flooring is ensured.
According to the invention the legs of the device may be shaped by bending two webs projecting away from one another, said webs resulting from a punching out of a substantially I-shaped opening in each end of the plate- shaped body, where the two transverse legs of the I extend in the longitudinal direction of the plate—shaped body. The resulting device is particularly simple with a reliable, symmetrical structure.
The bent webs may according to the invention be of a substantially hook-shaped cross section, whereby a shape is obtained which ensures that the legs are easily inserted in a groove and are locked therein.
Finally according to the invention, the bent webs may be bent substantially perpendicular from the plate-shaped body at a distance from the location where the webs extend from the plate-shaped body and project into the punched out portion. In this manner it is ensured that the device is provided with a particularly accurate, rectangular transition from the plate—shaped portion to each leg with a relatively small radius of curvature with the result that the plate-shaped portion of the device is automatically positioned so as closely to abut the bottom side of the boards.
Brief Description of the Drawing
The invention is described in greater detail below with reference to the accompanying drawing, in which
Fig. 1 is a top view of a preferred embodiment of a device according to the invention,
Fig. 2 is a sectional view on a larger scale taken along the line II-II of Fig. 1, and
Fig. 3 illustrates a portion of a flooring laid by means of the device of Figs. 1 and 2.
Best Mode for Carrying Out the Invention
The device shown in the drawing comprises an elongated, plate-shaped body 1 of a substantially rectangular shape. The device comprises an upwardly projecting leg 2, 3 at each end, said legs being shaped integral with the plate—shaped body 1 by way of bending.
The legs 2 and 3 are produced in connection with their respective punched out I- or H—shaped opening 4 and 5, respectively. These openings 4 and 5 are shaped symmet¬ rically about the longitudinal central axis of the plate—shaped body 1 a short distance from each end of said plate—shaped body. The parallel legs of the I or the H extend parallel to the longitudinal symmetrical axis of the plate—shaped body 1. The legs 2 and 3 are shaped by the punched out web 6 and 7, respectively, being bent. The webs 6 and 7 project from the side of the opening 4, 5 adjacent the centre of the plate—shaped body 1 and Into said opening. As a result each leg 2, 3 is bent out from the plane of the plate—shaped body 1 a short distance from the connection of the web 6, 7 with the plate-shaped body 1 in such a manner that a short portion 8 and 9, respectively, of the web is flushing with the plate-shaped body 1. The radius of curvature of each leg 2, 3 at the transition 10 to the plate-shaped body 1 can therefore be shaped relatively small.
Each leg 2 and 3 is of a substantially hook-shaped form with the result that a sharp edge 11 is formed. The sharp edge ensures a good engagement of the leg and the board in question.
The legs 2 and 3 are, as mentioned, shaped on the side of the openings 4 and 5 adjacent the centre of the plate-shaped body 1 while being simultaneously bent in such a manner that the sharp edge 11 on the hook-shaped leg 2 and 3 faces away from the centre of the plate- shaped body 1. In this manner the legs 2 and 3 provide a particularly good resistance against the tendency of the floor boards to expand at the same time as the sharp edge 11 has a tendency to bite itself into the board in question by cutting into the wood on the same side as the portion of the plate—shaped body which extends from the legs 2, 3 to the ends. In this manner a self-in- creasing resistance is obtained against a turning or tilting of the device 1 relative to each board.
Fig. 3 illustrates two abutting floor boards 12 and 13 engaging one another by means of a groove/tongue connec- tion 14. Each board 12 and 13 comprises a longitudinal groove 14 and 15, respectively, on the bottom side, said grooves being manufactured with an accurate position relative and parallel to the longitudinal rims of the board 12 and 13. The grooves 14 and 15 are simultaneous- ly manufactured with relatively fine tolerances.
As illustrated, the boards 12 and 13 are mounted on the bottom side by means of a device of the type shown in igs. 1 and 2, where the plate—shaped body 1 extends transverse to the groove/tongue connection 14 of the boards 12 and 13 with a leg 2, 3 received in their re¬ spective groove 14, 15. It appears clearly, that the plate—shaped body extends to each side relative to each groove 14, 15 and is thereby abuttingly arranged against the boards 12 and 13 on both sides of the grooves 14 and 15.
The device according to the Invention is preferably made of plate—shaped spring steel of a thickness of about 0.75 mm, a width of 20 mm, and a length of 135 mm. The height of the legs relative to the plate-shaped body 1 is suitably of a dimension 3.1 mm, whereas their mutual distance is 111 mm. The distance between the side of the legs 2, 3 perpendicular to the plate-shaped body 1 ad¬ jacent the centre and the associated sharp edge 11 Is advantageously about 2.5 mm. Such a device is suited for use in connection with 8 mm thick solid boards of a width of 113.9 mm. The associated grooves are suitably 2.35 mm wide and 3.5 mm deep. Boards of a width of 129.0 mm involve the use of devices made of spring steel of a length of 150 mm. The mutual distance of the legs is 126.5 mm. All the remaining dimensions are the same as above.
The invention has been described with reference to a preferred embodiment of the invention. Many modifica¬ tions may be carried out without thereby deviating from the scope of the invention. Each leg may for instance be shaped as a double leg adjacent both longitudinal sides of the plate—shaped body with an Intermediary portion extending as an extension past the legs to the ends of the plate—shaped body 1.

Claims

Claims .
1. A device for joining floor boards and comprising an elongated, plate-shaped body with a leg adapted to engage a longitudinal groove in each of the adjoining floor boards, c h a r a c t e r i s e d in that the legs (2, 3) are shaped at a distance from the ends of the plate-shaped body (1).
2. A device as claimed in claim 1, c h a r a c t e r ¬ i s e d in that the legs (2, 3) are shaped by bending two webs (6, 7) projecting away from one another, said webs resulting from a punching out of a substantially I- shaped opening (4, 5) in each end of the plate-shaped body (1), where the two transverse legs of the I extend in the longitudinal direction of the plate-shaped body (1).
3. A device as claimed in claim l or 2, c h a r a c - e r i s e d in that the bent webs (6, 7) are of a substantially hook-shaped cross section.
4. A device as claimed in claim 3, c h a r a c t e r ¬ i s e d in that the bent webs (6, 7) are bent substan- tially perpendicular from the plate-shaped body at a distance from the location where the webs (6, 7) extend from the plate-shaped body (1) and project into the punched out portion.
PCT/DK1992/000394 1991-12-27 1992-12-22 A device for joining floor boards WO1993013280A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP93902099A EP0624221A1 (en) 1991-12-27 1992-12-22 A device for joining floor boards
JP5511367A JPH07502580A (en) 1991-12-27 1992-12-22 Floor plate joining device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK912071A DK207191D0 (en) 1991-12-27 1991-12-27 DEVICE FOR USE IN JOINING FLOORS
DK2071/91 1991-12-27

Publications (1)

Publication Number Publication Date
WO1993013280A1 true WO1993013280A1 (en) 1993-07-08

Family

ID=8109881

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1992/000394 WO1993013280A1 (en) 1991-12-27 1992-12-22 A device for joining floor boards

Country Status (5)

Country Link
EP (1) EP0624221A1 (en)
JP (1) JPH07502580A (en)
CA (1) CA2125876A1 (en)
DK (1) DK207191D0 (en)
WO (1) WO1993013280A1 (en)

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US6332733B1 (en) 1999-12-23 2001-12-25 Hamberger Industriewerke Gmbh Joint
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US7913471B2 (en) 1998-06-03 2011-03-29 Valinge Innovation Ab Locking system and flooring board
US8006458B1 (en) 1998-10-06 2011-08-30 Pergo AG Flooring material comprising board shaped floor elements which are joined vertically by means of separate assembly profiles
US8011155B2 (en) 2000-01-24 2011-09-06 Valinge Innovation Ab Locking system for mechanical joining of floorboards and method for production thereof
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US8112891B2 (en) 2003-02-24 2012-02-14 Valinge Innovation Ab Method for manufacturing floorboard having surface layer of flexible and resilient fibers
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US8171692B2 (en) 2005-05-20 2012-05-08 Valinge Innovation Ab Mechanical locking system for floor panels
US8245478B2 (en) 2006-01-12 2012-08-21 Välinge Innovation AB Set of floorboards with sealing arrangement
US8276342B2 (en) 1995-03-07 2012-10-02 Pergo (Europe) Ab Flooring panel or wall panel and use thereof
US8375673B2 (en) 2002-08-26 2013-02-19 John M. Evjen Method and apparatus for interconnecting paneling
US8495849B2 (en) 2004-01-13 2013-07-30 Valinge Innovation Ab Floor covering and locking systems
US8516767B2 (en) 2005-07-11 2013-08-27 Pergo (Europe) Ab Joint for panels
US8627631B2 (en) 2000-06-20 2014-01-14 Flooring Industries Limited, Sarl Floor covering
US8806832B2 (en) 2011-03-18 2014-08-19 Inotec Global Limited Vertical joint system and associated surface covering system
US8833029B2 (en) 2002-11-12 2014-09-16 Kronotec Ag Floor panel
US8850769B2 (en) 2002-04-15 2014-10-07 Valinge Innovation Ab Floorboards for floating floors
US8919063B2 (en) 2005-09-08 2014-12-30 Flooring Technologies Ltd. Building board having a pattern applied onto side surfaces and conecting mechanisms thereof
US8978334B2 (en) 2010-05-10 2015-03-17 Pergo (Europe) Ab Set of panels
US9032685B2 (en) 1995-03-07 2015-05-19 Pergo (Europe) Ab Flooring panel or wall panel and use thereof
US9115500B2 (en) 2010-01-15 2015-08-25 Pergo (Europe) Ab Set of panels comprising retaining profiles with a separate clip and method for inserting the clip
US9169658B2 (en) 2002-11-15 2015-10-27 Kronotec Ag Floor panel and method of laying a floor panel
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WO1984002155A1 (en) * 1982-12-03 1984-06-07 Jan Carlsson Device for joining together building boards, such as floor boards
WO1987007667A1 (en) * 1986-06-07 1987-12-17 Dieter Wolff Securing element for wall or floor tiles

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SE372051B (en) * 1971-11-22 1974-12-09 Ry Ab
DE2616077A1 (en) * 1976-04-13 1977-10-27 Hans Josef Hewener Connecting web with flange for parquet floor - has pliable connecting web with flange held in floor plates to accommodate expansion and shrinking stresses
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JPH07502580A (en) 1995-03-16
EP0624221A1 (en) 1994-11-17
DK207191D0 (en) 1991-12-27
CA2125876A1 (en) 1993-07-08

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