FR2556793A1 - ANCHORING ANKLE - Google Patents

Abstract

PLASTIC FIXING ANCHOR, CONSISTING OF AN ANCHORING ROD INCLUDING A RETAINING ELEMENT AND A CORNER RECEIVING ELEMENT GOING UP IN DIRECTION OF THE END OF INTRODUCTION OF THE ROD, AS WELL AS A EXPANDABLE CORNER, WHICH CONSTITUTES WITH THE ANCHORING ROD, IN THE NON-EXPANDED STATE, A CIRCULAR CROSS-SECTION STRUCTURE. THE EXPANDABLE CORNER 4 INCLUDES AT THE LEVEL OF ITS SMALL END AN ELASTIC SPACER BAR 6 MADE BY SOLIDAR MOLDING OF THE END OF THE ROD 1 IN THE AXIAL EXTENSION OF IT, AND WHICH CAN BE FOLDED INTO THE CORNER RECEIVING ELEMENT 3 BY OVERCOMING THE BENDING RESISTANCE OF THE SPACER BAR 6. THE PRESENT INVENTION APPLIES IN PARTICULAR TO THE ANCHORING OF STRUCTURAL ELEMENTS, SUCH AS FOR EXAMPLE COATINGS ON WALLS IN THE FIELD OF CONSTRUCTION.

Description

The present invention relates to a fixing pin made of

  a resilient hard-coded plastic material, consisting of an anchor rod with a load absorbing member at the rear of the rod, and a central wedge element which the insertion end of the rod, as well as an expandable wedge movable along the central corner, which, in the closed state, forms with the rod of

  anchoring a set of circular section.

Anchors of the type

  mentioned above are used to anchor posi-

  structural elements such as, for example,

  pipelines, wiring and wiring or

  similar elements on walls, or to ensure the attachment of false shelves. What is important here is

  to be able to introduce these fixing pins in a simple way.

  fast and fast in the holes previously arranged for this

  fet in the wall or ceiling and then get, after

  introduction of the expandable wedge, a restraint effect

  so much security. It is in this respect important that the expansive corner is always supported securely

  applied against the wall of the hole, so that the

  this restraint exerted increases as the char-

ge believes.

  In the known fastening pegs of this type, the expansible wedge is provided with a portion forming

  lying in the retaining element which, after the introduction

  the anchor rod in the hole provided for this purpose in the wall projects outwardly from the latter, so that this end can then be pushed in, for example by means of a hammer, until at this the corner took, with the anchor rod, firmly its seat in the bore of the hole

(GM 79 16 007).

  In the case of these ankles

  as the length of the expansive wedge necessary for

  depressed position of the ankle constitutes a

  deny, since the plastics that we use

  obligatorily for this purpose increases the price of

  comes from the ankle. It is also practically impossible to

  sible to size the corner length in such a way that

  after its introduction, its rear part comes just

  flowering of the retaining element of the anchor rod.

  The invention is proscribed to realize a

  ankle of the aforementioned type, the wedge of which is limited to

  necessary to generate the expansion pressure. This object is realized according to the present invention by the fact that the expansible wedge,

  level of its small end, is achieved by solidarity

  with an elastic spacer in the rec-

  line of the rod & its end, and can be tilted into the central element forming wedge by overcoming the resistance to

the bending of the spacer.

  Thanks to the connecting spacer between the anchor rod and the corner it is possible to enter this

  last, when placing the ankle, without any difficulty

  cultured in the hole until the outer wall of the corner

  come into bearing contact against the inner wall of the hole.

  Since during the manufacture of the ankle, the wedge, for reasons of practical convenience in relation to the needs of demolding, is made integrally by molding in the axial extension of the anchor rod, it is exercised, when

  corner folding and its application under pressure

  be the central element forming a wedge, and for a dimensionne-

  corresponding bar of the spacer bar, a pull in the direction of the insertion end of the rod of

  anchorage, which makes it necessary for a corner

  sand. The ankle is firmly held in position

  no matter how deep it is

  dark, and this holding effect in position is still

  increased by the use of traction forces. This trail

  city is furthermore still cheaper than its counterpart in two known parts, because of the economy of matter

  that it allows to achieve and its monobloc design.

  For a better introduction of the wedge into its conjugated receiving element, it is advantageous that the latter comprises a base face whose slope and

  width correspond to the face of the corner, as well as two

  side rails. These side walls can be in this case

  parallel, but may also, according to another

  particularity of the invention, going away from one of the

  starting from the base face, so as to facilitate the introduction of the wedge into its receiving element. For questions of practical convenience, the basic face of the element

  corner receiver is interspersed with a groove that

  lightly upstream of the outer casing of the anchor rod so as to allow the two halves of the rod

  to come closer to each other by pressure, when

  that the diameter of the fitting hole is a little smaller than expected, for example as a result of the use for the purpose of drilling a used drill bit. To improve again

  the spreading effect can be maintained the groove has a lar-

  at least equal to that of the base surface of the corner, so that the corner bears only at the level of the side walls, and thus forces the two halves of the ankle to remain apart under the effect of pressure exercised. The spreading effect is thus felt on the entire circumference of the rod and thereby on the entire inner wall of the hole.

  The following description of different

  examples of practical realization, the statement of claims

  and the different schemas presented in support of this description.

  tif mention other features of the invention and

  benefits that it presents on a technical level. The differences

  The following illustrations represent respectively: Figure 1 - An anchor

  as it stands when posed.

  Figure 2 - A longitudinal sectional view

  Figure 3 - The same Sus elements from above, Figure 4 - Three cross-sectional representations of the wedge-receiving element, Figure 5 - Three representations in cross-section of the corner,

  Figure 6 - A longitudinal sectional view

  nal of the receiving element of the corner, in the position folded corner and spacer recessed in the assembly,

  Figure 7 - Two cross-sectional views

  Figure 8 - A plan view of the elements as shown in FIG. 6, showing the position of the receiving element of the corner and the corner itself.

  - Figure 9 - A variant of the configuration

  ration shown in Figure 6, with a separation effect

  dial, longitudinal sectional view, Figure 10 - A cross-sectional view of this variant,

  Figure 11 - Another variant of the

  FIG. 6, with forced entry of the wedge into its receiver, shown in longitudinal section, and

  Figure 12 - A cross sectional view

dirty of this last variant.

  The anchor shown in

  the diagrams attached to this description are made in

  hard elastic cedar plastic, and consists essentially of

  of an anchor rod (1) with a wedge-receiving element (3) which goes up towards the end of

  introduction (2), as well as an expandable wedge (4)

  ble along the corner receiving element (3). This constitutes, with the anchor rod (1), a set of sections

circular in the unexpanded state.

  Corner (4) is, at its level,

  end (5) made integral with the introducer end

  (2) of the anchor rod (1) via a spacer bar (6), under conditions such as

  corner (4) can be applied against the receiving element

  corner die (3) by overcoming the bending resistance of the spacer bar (6). As shown in FIGS. 2 and 3, the wedge (4) is preferably integrally formed by molding in the axial extension of the anchor rod (1).

  so that the spacer bar (6) is, at the same time,

  delivery state of the ankle, oriented in the direction of 1 introduction of the ankle (1) and that the wedge (4) must be folded back in the practically 180 degree to be applied against the element corner receiver (3)

  to make the ankle ready for use.

  To act favorably on the behavior

  Flexural elasticity of the spacer bar (6)

  the latter is preferably carried out in solidarity

  front panel in the lowest part of 1 '

  introduction end (2), and dimensioned under conditions

  such that starting from its connection point by molding it is, on a length L1, a little stronger in section, in the proportion of about 1/2 to 2/3 of the diameter of the rod, than on the the remainder of its length to the end of the wedge (5), so that the transition zone between the thick section and the thin section corresponds to a mandatory folding point. This provision gives rise to

  corner folding (4), a greater bending stress

  load bearing, and the corner (4) is thus more strongly

in blocking position.

  Figure 1 illustrates the mode of action of the link spacer bar (6). The stem of

  anchorage (1) is introduced, with its wedge (4) in position

  folded, in a hole (7) of section corresponding to

  that of the rod formed in a support wall (8), presented

  so preferably a rough firm hands structure, the bé

  tone and rubble constituting in this case materials constituting such a wall just as suitable as wood or fixing plates. The rod (1) comprises, at its rear part, a retaining element (9) which, in the embodiment shown here, is in the form of a head plate, and serves to fix in application against the

  wall (8) an insulating plate (10). Depending on the nature of the

  use thereof, the retaining element (9) of the rod (1), integral with the latter by molding, may be constituted for example by a cable clamp, a

eyelet, hook or bridle.

  For the introduction of the dowel into the hole (7) the wedge (4) is slightly folded back and then introduced into the hole (7) by the drive exerted by the bar spacer (6) bent. The spacer bar (6) exerts in this case, as a result of the bending stress generated, a pull on the wedge (4), so that the latter is always perfectly applied against the wall carrying the hole, and gives a strong effect

  retaining to the anchor fixing whatever the

  foundry introducer of the latter. And if the retaining element (9) is subjected to the action of tensile stresses of any nature whatsoever, the anchor rod ZSS67t9 then gives way slightly, while simultaneously applying the wedge

  (4) even more formaent against the wall bearing the hole.

  The teceece receiver of the corner (3) can,

  in its simple presentation, simply stand on

  this base (11) goes up towards the insertion end (2), and has the same slope angle u (as the face (12) of the expansible wedge (4). For a better introduction of the wedge (4), however, it is advantageous that

  corner receiving element (3), as illustrated by the

  IO gures 2 to 5 in the exemplary practical embodiment presented

  here, is delimited by two side walls (13).

  These can, as in the exe.-

  illustrated in Figures 11 and 12, be parallel, but also

  if, comue in the example shown in Figures 2 & 5, from

  of the base face (11) away from each other.

  conical configuration, the side walls (14) of the wedge (4) having in this case the same slope, and the base face (11) of the corner receiving element having all

  as the face of the wedge (12), along their entire length, a

identical genus.

  Figure 4 illustrates three different cross-sectional views of the receiver element of

  corner (3), and FIG. 5 three different cross-sections

  corner (4). These sections correspond respectively to the cutting lines indicated perpendicularly to the section

  longitudinal axis of Figure 2. In the case of the receiving element

  corner cutter (3) as shown in Fig. 4, the base face (11) is further cut by a groove (15) which terminates a little before the outer casing (16) of the rod

anchor (1).

  This provision can compress

  somewhat the anchor rod (1) which is advantageous when

  that the fitting hole (7) is a little smaller than this

  which is necessary with regard to the diameter of the stem. From the

  me way the rod (1) can, when the bore of the hole (7) is a bit strong, deviate, when using a corner (1) to

  radial or tangential spacing effect (see below).

  Figures 6 to 8 illustrate a

  the anchoring bar (6) is embedded between the side walls (17) of the anchor rod (1) formed by the groove (15), and this under conditions such as the outer hanger (18) of the bar spacer (6) folded reaches the maximum up to the insertion end (2) of the rod (i) or remains behind. This makes it possible to have the certainty that, even when the end (2) of the rod <1) abuts against the end of the bore (7), the spacer bar

  curved will remain in its entirety solicited at the trac-

  tion. If the bar hanger (18) protruded as

  shown in FIG. 1, and that the depth of the hole (7) does not

  was not sufficient, a situation that is not uncommon

  trer in practice, the bar hanger spacer

  (18) would then give against the bottom of the hole and repel-

  would be the corner (4) towards the back, and we would not get then

  plus the desired blocking effect mentioned in Figure 7.

  Figures 9 and 10 illustrate a variation

  of the ankle, in which the groove (15) is

  at least as wide as the width of the face of the wedge (12). By this configuration, the corner (4) no longer bears on the base face (11), but on the side walls

  conical (13). The anchor rod (1) is therefore

  radially spaced on all sides, so that the blocking effect is regularly distributed to all

  the points of the inner wall of the hole. This is more

  vorable, and in particular where the material

  of the support wall is relatively soft,

  the clamping force is exerted in two directions only

  As is suggested by the arrows marked P in FIG. 7. The same effect is also obtained in the embodiment illustrated in FIGS. 6 to 8, when the side walls (13) of the receiving element (3) as well as the walls lateral (14)

  corner (4) move closer, in the longitudinal direction,

  rection of the introduction end (2) along a path

  conical. In this case, we obtain a wedge effect

  tangentially as a result of the longitudinal offset of the wedge. In the configuration of the ankle as illustrated in FIGS. 11 and 12, there is provided at the convex outer face (21) of the wedge (4), respectively at the front and rear end, a pointed pin (22). ) to further increase the adhesion friction of the wedge (4) in the hole bore (7). For reasons of opportunity

  In practice, these lugs (22) are bevelled in the direction of the in-

  troduction of the wedge (4) and go up a steep slope on the rear part, and only serve to lock the wedge (4) in position in the hole (7) under the conditions of solidity

  that is required, regardless of the depth of penetration.

  The lugs (22) project from the outer face

  curved portion (21) only in the proportion necessary for their pointed parts (22) in the retracted position of the expandable wedge (4) to plunge into the imaginary cylindrical outer shell (16 ') of the rod (1) and can to be easily introduced into the hole, When the anchoring rod (1) is exerted on a slight pulling force, the lugs (22) block the wedge (4) against the wall of the hole by friction against it or, if it consists of a soft material, by penetration into it, which

  the wedge (4) can no longer be removed from the hole (7).

  When this pin is used in the presence of hard materials, such as concrete, the lugs (22) are then flattened so that the entire outer face (21) of the corner (4) is in contact. This outer face (21) and that of the anchor rod (1) can be adapted, by acting on its structure, to the different

  possible building materials.

  The configuration illustrated in the figures

  11 and 12 also comprises a variant of the receiving element

  side-wall corner cutter, (12), in the-

  the corner (4) comprises, at its side walls (14), beads (19) arranged parallel to the base face of the wedge (12) by means of which the wedge (4) can be slid into the grooves of corresponding guides (20) that comprise the side walls (13). This configuration offers the possibility of previously mounting the wedge (4) in; its receiving element (3), the shoulders or beads (19) of relatively small thickness which can in this case be introduced into the grooves (20) by pressure exerted since

  top or possibly pushing them from behind.

  Re ve ndic at i on s 1 - Hard elastic cedar plastic anchor, consisting of an anchor rod having a load-absorbing retaining element at the rear part of the rod and a corner receiving element going up towards the end

  the stem, as well as an expansive wedge de-

  placeable along the receiver element, and which constitutes with

  the anchoring rod, in the unexpanded state, a structure of sec-

  Io transverse cross section, s e c a r a c t e r a n t p a r e f e th that the expansible corner (4) comprises at

  level of its small end (5) a spacer bar e-

  resilient (6) made by integrally molding the end (2) of the rod (1) in the axial extension thereof, and

  can be folded into the corner receiving element (3) on top of

  mounting the bending resistance of the spacer bar.

  2 - anchor according to claim 1, characterized in that the bar

  spacer (6) is made integral by molding on the opposite side.

  in the lowest part of the introductory end

  duction (2) and that from its point of connection by

  molding it is, on a length "L1", carried out in a

  Thickness about 1/2 to 2/3 stronger than the diameter of the stem in cross-section, than over the rest of its length

  up to the end of the corner (5).

  3 - Fixing pin according to the

  claim 1 or 2, wherein the wedge receiving member (3) is constituted by a base face (11) corresponding on the inclination and width plane to the base face of the wedge (12) and by two side walls (13). ), characterized in that the expandable wedge (4) has, on at least one of its side walls (14), shoulders in the form of dots or beads (19) parallel to the base face of the corner

  (12) which can fit into guide grooves

  ge (20) of corresponding depth formed in the walls

  side members (13) of the corner receiving member (3).

  4 - Fixing pin according to the

  1 to 3, characterized by the fact that the bar-

  this spacer (6) is embedded between the side walls (17) of the anchor rod (1) constituted by a groove (15) 10

Z556793

  and this under conditions such that the outer hanger (18) of the spacer bar (6) in the folded position arrives, in the blocking position of the wedge (4) at most up to 1 '

end of the rod (2).