FR2695671A1 - Sill bar with simple mounting. - Google Patents

Abstract

The present invention relates to a threshold bar consisting of an elongated profile, the lower part of which comprises two rigid ribs (15, 16) extending longitudinally and closing towards each other to define, between them and with a bottom part (17) of the profile, a slide (18) open along a lower longitudinal strip to allow the introduction by one end of the slide of a nail head. The nail head (20) and the slide have in cross section complementary shapes such that said part (17) and the upper surface of the head are in abutment along a longitudinal edge defining an axis of rotation and that the lateral portions of the head are guided by each of the inner faces of the ribs.

Description

SINGLE MOUNT THRESHOLD BAR

  The present invention relates to threshold bars The threshold bars are elements fixed to the floor of living quarters or offices, at the junction of

  two different floor coverings or different levels.

  A threshold bar is of both functional and aesthetic interest It provides protection for the edges of adjacent floor coverings and masks their irregularities while

  by forming a clean, straight line of separation.

  The simplest and most general threshold bars

  Really used consist of a metallic band (a profile) slightly curved and provided with regularly spaced holes.

  These allow the passage of screws for fixing to the ground. A variant of these threshold bars is illustrated in FIG. 1 The threshold bar 1 is provided on its underside with fins 2 defining a slide in which square heads of dowel pins 3 can slide, which can

  be directly inserted into prepared holes in the ground.

  The system of FIG. 1 has an advantage of simplicity of installation compared to the simple system with a drilled profile. Indeed, it is then sufficient to prepare holes in alignment without it being necessary for them to have rigorous spacings between them A number of corresponding nails is placed in the slide, after which the nails are put in place by sliding in front of the corresponding dowels and then the

  bar is driven in, thereby driving in the nails This driving in

  cement can be done simply by walking on the bar.

  The threshold bars described above are not suitable for the case where the levels of the two adjacent coatings whose threshold bar aims to hide the joint have a

  significant height offset.

  Threshold bars are also known in the

  which fixing screws are hidden and which are suitable for coverings of unequal heights These threshold bars include either a base on which is folded down by folding a threshold part or a base on which is clipped a bar of upper threshold The folding threshold bars are efficient but more complex than the threshold bars made up of a simple screwed profile and, if they are screwed, suffer from the same disadvantage of

  fitting Snap-on threshold sills are difficult to manufacture

  and susceptible to accidental tearing.

  An object of the present invention is to provide a threshold bar with hidden fixing which is particularly simple to install and inexpensive to manufacture and which is suitable

  masking the junction of coatings of different levels.

  To achieve this object, the present invention pre-

  sees a threshold bar consisting of an elongated profile, the lower part of which has two rigid ribs extending longitudinally and closing towards one another to define, between them and with a bottom part of the profile, a slide open along a lower longitudinal strip to allow the introduction by one end of the slide of a nail head The nail head and the slide have in cross section complementary shapes such that said part and the upper surface of the head are supported along a longitudi-

  nale defining an axis of rotation and that the lateral portions

  rales of the head are guided by each of the interior faces of the ribs, this assembly leaving the nail free to

rotation around said axis.

  According to an embodiment of the present invention, the lips opposite the ribs are spaced apart by a distance greater than the diameter of the rod of the nail and said edge is defined by a protruding V from said bottom part or from the upper face of the head The angle of the V is chosen so that when

  the nail shank presses against one of the lips, there are simul-

  temporarily support between one of the sides of the V and the opposite face

  of the bottom part or of the nail head, respectively.

  According to an embodiment of the present invention, each of the ribs extends substantially perpendicularly to the rear face of the profile before being curved in an arc of a circle towards the other rib, the lower part of the nail head having, in section, a circular shape complementary to

that of said arcs.

  According to an embodiment of the present invention,

  the nail head has the shape of a cylinder extending in a plane perpendicular to the rod of the nail.

  According to an embodiment of the present invention, the upper face of the nail head is flattened and comes to bear on a longitudinal edge of the lower face of the

closed off.

  According to one embodiment of the present invention, the slide is offset from the longitudinal axis of

bar.

  These and other objects, features and advantages of the present invention will be discussed in detail in

  the following description of particular embodiments

  made in relation to the accompanying drawings, among which: FIG. 1 represents a sectional view of a threshold bar according to the prior art; 2 shows a partially perspective sectional view of a threshold bar according to the present invention in an intermediate installation phase; Figures 3 A to 3 C show a side view, a front view and a perspective view of a "nail" for fixing a threshold bar according to the present invention; Figure 4 shows a variant of the nail according to the present invention; and Figures 5 to 7 show various variants of

  realization of a threshold bar according to the present invention.

  Figure 2 is a partially perspective sectional view of a threshold bar being laid on a floor 11 on which are coated coverings of unequal heights, respectively 12 and 13, for example a carpet and a tile. threshold 14 has an apparent upper part slightly rounded and possibly itself painted, dyed, or covered with a finishing material to give it any desired aesthetic appearance. The lower part of the bar comprises projecting ribs 15 and 16 defining between they and with the lower part 17 of the bar a longitudinal slide 18 In this slide can be inserted the head 20 of a nail 21 This nail is intended to be driven into a dowel 22

  previously placed in the ground 11.

  Figures 3 A, 3 B and 3 C which are respectively a side view, a front view and a perspective view of a nail, are intended to illustrate a shape of nail head particularly well suited to the present invention This head 20 has the shape of a half-cylinder perpendicular to the rod

  21 of the nail and flattened on the side opposite this rod This half

  cylinder forms a slide adapted to slide in the slide 18 This elongated shape of the slides 20 makes it possible to avoid rotation of the nail heads and therefore of the rods in a plane passing through the longitudinal axis of the slide Thus the rods cannot be lie in the slide during the insertion phase. In the case where the nail has the shape illustrated in FIGS. 3 A-3 C, the part 17 of the slide preferably has the shape

  of a V defining a support edge 19 which comes to bear sensitive-

  lying in the center of the upper flat face of the nail head.

  In addition, the space between the lips facing the ribs 15 and 16 is greater than the diameter of the rod of the nail 21. Thus, once the nail is put in place, and until it is fully inserted, the threshold bar can rotate slightly around the nail heads, the axis of rotation corresponding to the support edge 19 This allows positioning and fixing for different heights of offset between the coverings 12 and 13 As shown in FIG. 2, the internal walls, towards their ends, ribs 15 and 16 have a shape

  complementary to the rounding of the slide 20 The angle of the V defi-

  the supporting edge 19 is preferably chosen so that,

  when the threshold bar is in one of its tilt positions

  extreme house, or simultaneously presses the nail rod against one of the lips of the ribs 15, 16 and the upper half of the nail head against one of the sides of the V. Preferably, as shown in FIG. Figure 4, the "nails" 21 will be nails provided with transverse ribs of

  so that, once inserted into the ankles 22, they present

  try a very high resistance to tearing In a simple embodiment, the rods 21 of the nails can be

threaded rods.

  In the foregoing, a particular form has been described.

  re head of nails, the skilled person will note that many shapes can be used as long as the slide 18 has a suitable complementary shape The nail heads may have any desired cylindrical shape, for example be

circular section cylinders.

  We can also consider a structure "opposite" to that of Figure 2 in which the bottom 17 of the slide is substantially planar and where it is the head of the nail which is in

  convex V shape, the edge of this V defining an axis of rota-

  tion. Figures 5 to 7 show various embodiments of the threshold bar 4 The embodiments of Figures 5 and 6, like that of Figure 2, are adapted to a

  set up in case of relatively large height offset

  both between two coatings, for example from 7 to 15 mm The embodiment of FIG. 7 is suitable in the case where there is no difference or only a slight difference in level between

coatings.

  The bar in Figure 5 has for example a width of

  48 cm and a curved radius of curvature of 50 cm.

  The bar in Figure 6 has for example a width of

  41 cm and a curved radius of curvature of 51 cm.

  The bar in Figure 7 has for example a width of

  30 cm and a curved radius of curvature of 40 cm.

  On the other hand, it will be noted that in the case of FIGS. 5 and 6, the slide 8 is offset with respect to the central axial line of the threshold bar so that the fixing is closer to the lowest side of the bar and so that the overhang of the screw is reduced. We will also note at the right end of the bars of FIGS. 5 and 6 (on the side of the bottom coating), a rounded portion projecting downwardly overflowing 25 intended and to avoid penetration of the edge of the bar in the coating

  which could be damaged or wrinkled.

  Furthermore, compared to the snap-on system of the prior art, it should be emphasized that the ribs delimiting the slide are rigid and that the bar cannot come out by

unclipping once put in place.

  To remove a bar according to the invention, it is necessary to forcibly remove the nails, which is a destructive operation, but which normally does not have to occur, the bar according to the present invention having a very long duration However, it should be noted that this tearing does not damage the

  coverings whose bar aims to hide the joint.

Claims (6)

  1 threshold bar made up of an elongated profile, the lower part of which comprises two rigid ribs (15, 16) extending longitudinally and closing towards one another to define, between them and with a bottom part ( 17) of the profile, a slide (18) open along a lower longitudinal strip to allow the introduction by one end of the slide of a nail head, characterized in that the nail head (20) and the slide have cuts complementary shapes such as said part (17) and the surface   upper part of the head are supported along a longitu-   dinal defining an axis of rotation and that the lateral portions   rales of the head are guided by each of the interior faces of the ribs, this assembly leaving the nail free to rotation around said axis.   2 threshold bar according to claim 1, character-   laughing in that the lips opposite said ribs are spaced apart by a distance greater than the diameter of the rod of the nail and that said edge is defined by a protruding V from said bottom part (17) or from the upper face of the head , the angle of this V being chosen so that, when the nail rod is in abutment against one of the lips, there is simultaneously a support between one of the sides of the V and the opposite face of said part   background or nail head, respectively.   3 threshold bar according to claim 1, character-   risée in that each of the ribs extends substantially perpendicular to the rear face of the profile before coming   bending in an arc towards the other rib, the lower part of the nail head having, in section, a circular shape complementary to that of said arcs of circle.   4 threshold bar according to claim 1, character-   mocking in that the nail head has the shape of an extended cylinder   dant in a plane perpendicular to the rod of the nail.   Threshold bar according to claim 1, characterized in that the upper face of the nail head is flat   tie and comes to bear on a longitudinal edge of the underside the bar.   6 threshold bar according to claim 1, characterized in that said slide is placed sensibly-   central to the longitudinal axis of the bar.   7 threshold bar according to claim 1, characterized in that the slide is offset from the axis longitudinal of the bar.