EP1087075B1 - Permanent anchoring device - Google Patents

Abstract

The anchor consists of an elongated body (5) such as a rod, screw, bolt or dowel, fixed in a wall (1) or other support. On the outside of the wall it has a head (4) engaging with a recess (10) in a spacer bush (9) shaped to receive an inverted U-shaped coupling member (12) on the safety fitment. The spacer bush is made, for exmaple, in the shape of a rolelr with a peripheral groove to receive the coupling.

Description

The present invention relates to a so-called anchoring device permanent in a building element, such as a wall, to anchor or hang non-permanently at least a safety device, such as scaffolding, gondola, ladder, platform or the like.

A large number of anchoring devices of the aforementioned type have been developed to date. These anchoring devices generally include a fastening part to the building element and a connecting element between safety device and fixing part. These anchors generally consist of relatively complex shaped parts which require besides a certain user dexterity for allow attachment between fixing part and element link. Due to the complexity of the parts, such anchors are relatively expensive. The multiplication of their use due to news standards today require simplifying these devices to reduce the cost and allow their establishment in a large number of places on a building.

We also know in particular from FR A 2610027 not anchoring but simply fixing devices consisting of a rod fitted with a head. The rod crossing the building element is immobilized in the element of simple construction by means of a counter plate held by a nut, this immobilization cannot be carried out only after insertion, in the space separating the head of the building element, a square on which can be attached the safety device to to hook. Therefore, the manipulation of the security for hanging cannot take place easily from the ground as it requires various screwing operations. Indeed, fixing the device safety angle before immobilizing the angle on the rod inserted in the building element is impossible due to the method of fixing the bracket to the fixing rod.

An object of the present invention is therefore to propose a so-called permanent anchoring device whose design, particularly simplified, allows to have a lower cost anchoring device.

Another object of the present invention is to provide a anchoring device whose design allows easy placement of the connecting element on the workpiece fixing, this installation can be carried out from of the ground.

To this end, the invention relates to a device anchor called permanent in an element, such as a wall of a construction for anchoring or hanging in a non- permanent at least one safety device, such as a scaffolding, a gondola, a ladder, a platform or similar, this anchoring device comprising a piece of permanent attachment to the building element and a connecting element between safety device and workpiece fixing, this connecting element comprising at least one profiled opening in the shape of an inverted U, characterized by what the fastener, such as screw, bolt, pin or ankle, consists of an elongated body provided successively, from its insertion end in the building element, a limiting member axial insertion into the building element and a head so as to spare, behind the head of the workpiece attachment, a space allowing the attached connecting element the safety device to be able to position itself above of the fastener for cooperation with less with the head of said fastener, the opening profile of the connecting element being mounted astride the body of the fastener behind the head of the fixing part, so that any separation of the construction element safety device, when subjected to an overturning force, is stop.

Thanks to the design of the fixing piece, the attachment and the release of the safety device by through the connecting element prove to be particularly easy operations. In addition, the presence of the axial drive-in limitation member allows you to select, when anchoring, desired angular orientation for the head of the part of fixation.

According to a preferred embodiment of the invention, the axial insertion limitation member of the body of the fastener in the building element is consisting of a part attached to the body and forming spacer between the building element and the head of the fixing piece.

The design of a sinking limitation device under shape of an insert allows the use of a rod classic anchor. Furthermore, cooperation from this body with the head of the fixing piece is facilitated in particular with a view to immobilizing in rotation this body on the body of the fastener.

la figure 1 représente une vue partiellement en perspective de l'élément de liaison du dispositif d'ancrage destiné à être positionné sur la pièce de fixation du dispositif d'ancrage objet de l'invention;

la figure 2 représente une vue en perspective à l'état éclaté des éléments constitutifs de la pièce de fixation ;

la figure 3 représente une vue en perspective à l'état assemblé d'une variante de la pièce de fixation du dispositif d'ancrage objet de l'invention ;

la figure 4 représente une vue en perspective de dessous d'un élément de liaison d'un dispositif d'ancrage conforme à l'invention ;

la figure 5 représente une vue schématique en perspective d'un dispositif de sécurité constitué par un échafaudage positionné sur un élément de mur au moyen du dispositif d'ancrage conforme à l'invention et

la figure 6 représente une vue en perspective d'un dispositif de sécurité constitué par une échelle fixée, au moyen d'un dispositif d'ancrage conforme à l'invention, à un mur.

The invention will be clearly understood on reading the following description of exemplary embodiments, with reference to the appended drawings in which:

Figure 1 shows a partially perspective view of the connecting element of the anchoring device intended to be positioned on the fixing part of the anchoring device object of the invention;

Figure 2 shows a perspective view in the exploded state of the constituent elements of the fastener;

Figure 3 shows a perspective view in the assembled state of a variant of the fixing part of the anchoring device object of the invention;

Figure 4 shows a perspective view from below of a connecting element of an anchoring device according to the invention;

FIG. 5 represents a schematic perspective view of a safety device constituted by a scaffolding positioned on a wall element by means of the anchoring device according to the invention and

FIG. 6 represents a perspective view of a safety device constituted by a ladder fixed, by means of an anchoring device according to the invention, to a wall.

The anchoring device, object of the invention, is a anchoring device said to be permanent insofar as it is normally intended, with respect to at least some component parts of this device, to be left permanently in the building element such than a wall.

This device makes it possible to anchor or hang in a non- permanent at least one safety device 2 which can be made up of scaffolding, as illustrated in Figure 5 or a scale as shown in Figure 6.

This anchoring device comprises a part 3 for fixing to element 1 of construction, this fixing having to be generally performed permanently and one element 12 connecting the safety device 2 to the workpiece 3 fixing.

The fixing or anchoring part 3, such as a screw, a bolt or dowel, consists of an elongated body 5 provided at its end opposite to its end 5B of introduction in element 1 of construction of a generally protruding part called a bulge head 4. It also has between end 5B introduction and head 4 a limiting device the axial insertion of the body 5 of the attachment part 3 in building element 1. This organ represented in 9 in the figures, thus makes it possible to provide a space between construction element 1 and head 4 of part 3 of anchoring of the latter to allow cooperation of the various elements making up the anchoring device.

Although the fixing part 3 is generally constituted by a screw whose body 5 will therefore carry a part 5B threaded to facilitate attachment of the assembly by means of a plate and a nut, other modes of fixing the body 5 in the building element 1 can be considered.

The member for limiting the axial insertion of the body 5 of the fixing part 3 in the building element 1 can also affect a lot of shapes. In one first embodiment not shown, this body of limitation of axial insertion of the body 5 of the part 3 of fixing in building element 1 can be formed in one piece with the body 5 of piece 3 of fixation. In this case, this body can be constituted by example of at least one shoulder formed at the periphery of the body 5 of the part 3 for fixing between the head 4 and the end 5B for introducing the body 5 into the element 1 of construction.

In another embodiment of the invention, the member limiting the axial penetration of the body 5 of the part 3 fastening in the building element 1 can be consisting of an insert forming a spacer between construction element 1 and head 4 of part 3 of fixation. This patch such as a sleeve having at least one external peripheral shoulder or a grooved roller 9 is arranged to provide at least one continuous or discontinuous external circumferential groove between the head 4 of the fixing part 3 and the part 5A of the body 5 of the fixing part 3 intended to be introduced in element 1 of construction. The opening 13 profile of the connecting element 12 is mounted astride in said groove 6 to surround at least partially the back of the throat 6. This insert, preferably grooved 6, is slidably introduced on the body 5 of the attachment part 3 to a stop position on the head 4 of the attachment part 3.

Generally, the body 5 protrudes from the construction 1 at its end opposite the screw head to allow its immobilization by means of a nut 7 cooperating with the threaded part 5b of the body 5. The groove 6 is arranged at the screwed state of the fixing part 3, in element 1 of construction between the face of the construction intended for receive the safety device and the screw head 4.

This groove 6 is therefore perfectly visible in the screwed state of the fixing part 3 since it remains outside of construction 1. It should be noted that in all examples shown in the figures, the groove is provided at by means of an insert each time constituted by a grooved roller 9, this roller constituting the limitation of axial insertion of the body 5 of the part 3.

This groove 6 preferably has a shape section general trapezoid, the small base of the trapezoid constituting the bottom of the groove 6.

In addition to this fixing part 3, the anchoring device further comprises a connecting element 12 intended to be attached to safety device 2. This connecting element 12 allows you to anchor or hang, not permanently, the safety device 2 to the attachment part 3. For allow this attachment, this connecting element 12 has at least one U-shaped opening 13 reversed. The connecting element 12 is secured to the part 3 of fixing by a mounting with horse of the element 12 of connection on the body 5 of the fixing part 3, behind the head 4 of said part through the opening 13 which is fitted with the connecting element 12. This opening 13 comes lodge in the space provided between head 4 and element 1 of construction thanks to the presence of the limiting device axial drive. In the case where the body 5 has a groove 6 provided by means of an insert. The opening 13 of the connecting element 12 is mounted astride in said throat. This mounting on horse is obtained in positioning the connecting element 12 above the part 3 fixing and lowering the latter so that the edges 13A of the opening 13 formed in the element link 12 come to enclose with more or less play, the bottom of the groove 6 of the attachment part 3 or simply the body 5 of the part 3 in the absence of a groove 6. This results in a particularly simple positioning of the connecting element 12 on the fixing part 3.

The fact that the groove 6, when it exists, presents a general trapezoidal section as has been described above facilitates the introduction of the edges 13A of the opening 13 of the element 12 in the groove 6 formed between the flanges of the grooved roller 9. Thanks to this positioning of the connecting element 12, all separation of the safety device 2 from the construction 1, when subjected to an effort of overturning, is prevented.

In addition to this connection between connecting element 12 and fixing part 3 in the direction of pivoting around of a substantially horizontal axis, it can be in some cases necessary to immobilize in rotation the element link 12 relative to the fixing part 3. For allow this immobilization, in the case where the groove 6 is provided in an insert, the insert and the head 4 of the attachment part 3 have shapes additional nestable ensuring immobilization in rotation of the insert on the body 5 of said fixing part 3. So in the examples shown where the insert is a roller 9 with groove 6, the flange 9A of the roller 9 opposite the head 4 of the part 3 of attachment has a groove 10 inside which comes to house the head 4 of the fixing part 3 having a shape complementary to said groove 10. In the examples shown, the head 4 of the part 3 of fixation affects the shape of a square or rectangle.

The fixing part 3 further comprises at least two flats 11B, 11C, 11A substantially parallel formed respectively on the body 5 of the fixing part 7 and / or on the head 4 of the attachment part 3 and / or on the member for axial depression of the body 5 of the fixing part 3 preferably consisting of a part added sliding to the body 5 of the fixing part 3 to a stop position on the head 4 of the attachment part 3. In case the head 4 comprises at least two substantially parallel flats 11C, these 11C flats are arranged to cooperate with parts planes 16 of the connecting element 12 so as to ensure immobilization in rotation of the connecting element 12 when positioned on horseback behind the head 4 of the fixing part 3. The flats 11A, 11B are as for arranged to cooperate with the 13A U-shaped edges of the opening 13 in U of the connecting element 12 and / or with planar portions 16 of the connecting element 12 so to ensure immobilization in rotation of the element 12 of connection when positioned astride throat 6 of the fixing part 3.

Thus, in the example shown in Figure 3, the throat of the grooved roller 9 has at least two adapted flats 11B to cooperate with the edges 13A used to delimit the branches of U of opening 13 in U of element 12 of link to ensure immobilization in rotation of the connecting element 12 in said groove.

In the case of the embodiment of part 3 of attachment shown in Figure 2, the head 4 of the part 3 fixing, which is a rectangular head, and the flange 9A of the roller 9 with a groove opposite the head 4 of the part 3 each have at least one periphery two parallel flats, these flats being respectively formed each by 11C by two parallel sides of the head 4 of attachment part 3, the others 11A by flaps cut from the flange 9A of the throat roller coming into abutment against the head 4 of the attachment part 3. These flats 11A, 11C are arranged to cooperate with flat parts 16 of the connecting part 12 and ensure immobilization in rotation of the connecting element 12 during its positioning on horseback in groove 6 of part 3 of fixation. In this second case, the connecting element 12 can affect the shape of a tube 15, generally of section square, at least partially open on one of its faces, this tube being closed at one of its ends by a plate 14 comprising the opening 13 substantially in U shape. Plate 14 and tube 15 cooperate with each other to allow, during overlapping mounting of element 12 of connection on the fixing part 3, the overlap by the plate 14 of the body 5 of the attachment part 3 and the overlap by the straight side walls of the tube 15 of the head 4 of the attachment part 3. These walls side are shown at 16 in Figure 4. The opening of one face of the tube 15 constituting the part 12 connecting over part of its length in the vicinity of the plate 14 carrying the opening 13 makes it possible to spare the equivalent of a room as shown in this figure.

In practice, the use of the anchoring device described above is as follows. Attachment piece 3 is housed in the wall, usually after drilling a hole in the wall using a suitable tool. Attachment piece 3 is then introduced into the wall until eventually protrude from building element 1 and is maintained for example by means of a nut 7 screwed onto the body 5 of the attachment part 3. Attachment piece 3 is introduced in element 1 of construction in the state nested roller 9 with groove and head 4 of part 3 of fixing up to a position in which the roller 9 abuts on the face of the building element 1 intended to receive the safety device 2. In the absence of an added part on the body, part 3 is, thanks to its axial sinking limitation member, introduced in element 1 of construction so as to leave a space between head 4 of part 3 and face of construction element 1 intended to receive the security device. Flats, where they exist on this fixing part 3, are then installed in a substantially vertical position. During the screwing, the fixing part 3 is held in a position fixed, the nut 7 being movable relative to the body 5 of the fixing part 3. This makes it possible to maintain for sure correct orientation of the flats. This orientation of flats can be visually checked by looking at the position of the head 4 of the fixing part 3 when this has a rectangular shape. In parallel, the connecting element 12 is fixed to the device 2 of safety which must be anchored or attached to element 1 of construction. This safety device 2 can for example be constituted by a scaffolding device of the type intended to simply come to bear on the construction. These scaffolding devices are well known to those versed in this art. An example of this device scaffolding is shown in Figure 5. The arm affecting the shape of a tube 15 fitted to the element 12 of link is generally fitted to the socket on the scaffolding structure. This connecting element 12 can still be permanently installed on the structure scaffolding. The plate 14 carrying the opening 13 in U-shaped is arranged at the free end of this arm. The scaffolding structure is therefore high to come position above throat 6 or more generally of body 5 of the fixing part 3 then lowered to bring the edges 13A opening 13 of the connecting element 12 in taken with groove 6 by an overlapping mounting in enclosing the bottom of the groove 6 with a variable clearance.

In the example shown in Figure 6, the device security consists of a ladder which includes, at near one of its ends, a cross parallel to two uprights, this cross being equipped of a flap articulated on said crosspiece, this flap having at least one substantially shaped opening 13 of U which is mounted on horseback in a similar manner to that which been described above in the throat 6 of the body 5 or directly on the body 5 of the fixing part 3, the fixing part 3 which may be identical to what has been described above. In this case, an asset in rotation of the connecting element 12 on the part 3 of fixing is not essential. The goal is simply to prevent the ladder from overturning or sliding support on element 1 of construction.

Note that in all of the above examples, the U-shaped opening 13 of the connecting element 12 is generally constituted by a notch formed on an edge of the connecting element 12, in this case a plate 14 of the latter.

Furthermore, to facilitate the mechanical strength of the assembly, it can be provided, on the flange of the roller 9 to groove resting on the construction element 1, claws 17 intended to sink into construction during the Tightening.

Claims (13)

1. Anchoring device, termed permanent anchoring device, in an element (1), such as a wall of a construction, for anchoring or hooking on, in a non-permanent manner, at least one safety device (2), such as scaffolding, a cage, a ladder, a platform or the like, this anchoring device comprising a part (3) for permanent fixing to the structural element (1) and an element (12) for linking between safety device (2) and fixing part (3) , this linking element (12) having at least one opening (13) shaped in the form of an inverted U,
   characterised in that the fixing part (3), such as screw, bolt, spindle or pin, consists of an elongated body (5) provided successively, from its end (5B) for introduction into the structural element (1), with a member (9) for limiting the axial penetration into the structural element (1), and with a head (4) so as to provide, behind the head (4) of the fixing part (3), a space enabling the linking element (12) fixed to the safety device (2) to be able to assume a position above the fixing part (3) with a view to interaction at least with the head (4) of the said fixing part (3), the shaped opening (13) in the linking element (12) being fitted straddling the body (5) of the fixing part (3) behind the head (4) of the fixing part (3), such that any separation of the safety device (2) from the structural element (1) when it is subjected to an overturning force is prevented.
2. Anchoring device according to Claim 1,
   characterised in that the member for limiting the axial penetration of the body (5) of the fixing part (3) into the structural element (1) consists of at least one shoulder provided at the periphery of the body (5) of the fixing part (3) between the head (4) and the end (5B) for introduction of the body (5) of the fixing part (3) into the structural element (1).
3. Anchoring device according to Claim 1,
   characterised in that the member for limiting the axial penetration of the body (5) of the fixing part (3) into the structural element (1) consists of a part added onto the body (5) and forming a crosspiece between Lhe structural element (1) and the head (4) of the fixing part (3).
4. Anchoring device according to Claim 3,
   characterised in that the added part, such as a sleeve having at least one external peripheral shoulder or a roller (9) with a groove, is equipped to provide aL least one continuous or discontinuous external circumferential groove (6) arranged between the head (4) of the fixing part (3) and the part (5A) of the body (5) of the fixing part (3) intended to be introduced into the structural element (1), the shaped opening (13) of the linking element (12) being fitted astride in the said groove (6) so that it at least partially surrounds Lhe bottom of the said groove (6).
5. Anchoring device according to one of Claims 3 and 4,
   characterised in that the added part, preferably with a groove, is introduced by sliding onto the body (5) of the fixing part (3) until it reaches a position in abutment with the head (4) of the fixing part (3).
6. Anchoring device according to Claim 4,
   characterised in that the groove (6) has a section of generally trapezoidal appearance, the small base of the trapezium constituting the bottom of the groove (6).
7. Anchoring device according to one of Claims 3 to 6,
   characterised in that the added part and the head (4) of the fixing part (3) have complementary shapes that can be nested in one another, ensuring immobilisation or the part added onto the body (5) of the said fixing part (3) such that it is not able to rotate.
8. Anchoring device according to one of Claims 3 to 7,
   characterised in that the added part is a roller (9) with groove, the cheek (9A) of the roller (9) facing the head (4) of the fixing part (3) having a slot (10) within which the head (4) of the fixing part (3) having a shape complementary to the said slot (10) is housed.
9. Anchoring device according to one of Claims 1 to 8,
   characterised in that the head (4) of the fixing part (3) has at least two essentially parallel flattened surfaces (11C), these flattened surfaces (11C) being equipped to interact with the flat parts (16) of the linking element (12) so as to ensure immobilisation of the linking element (12) when it is positioned astride behind the head (4) of the fixing part (3) such that it is not able to rotate.
10. Anchoring device according to one of Claims 1 to 9,
    characterised in that the fixing part (3) has at least two essentially parallel flat surfaces (11A, 11B, 11C) provided on the body (5) of the fixing part (3) and/or on the head (4) of the fixing part (3) and/or on the member limiting the axial penetration of the body (5) of the fixing part (3) preferably consisting of an added part introduced by sliding onto the body (5) of the fixing part (3) until it reaches a position in abutment with the head (4) of the fixing part (3), the said flat surfaces being equipped to interact with the U-shaped edges (13A) of the U-shaped opening (13) of the linking element (12) and/or with the flat parts (16) of the linking element (12) so as to ensure immobilisation of the linking element (12) when it is positioned astride behind the head (4) of the fixing part (3) such that it is not able to rotate.
11. Anchoring device according to Claim 10,
    characterised in that the flat surfaces are provided, on the one hand, in the cheek (9A) of a roller (9) with groove, mounted such that it slides onto the body (5) of the fixing part (3) and coming (sic) into abutment with the head (4) of the fixing part (3) and, on the other hand, on the head (4) of the fixing part (3).
12. Anchoring device according to one of Claims 1 to 11,
    characterised in that the U-shaped opening (13) of the linking element (12) consists of a notch provided on one extremity of the said linking element (12).
13. Anchoring device according to one of Claims 1 to 12,
    characterised in that the linking element (12) assumes the shape of a tube (15), at least partially open on one of its faces and closed off at one of its ends by a plate (14) containing the essentially U-shaped opening (13), plate (14) and tube (15) interacting with one another to allow, during fitting of the linking element (12) straddling the fixing part (3), straddling of the body (5) of the fixing part (3) by the plate (14) and straddling of the head (4) of the fixing part (3) by the rectilinear side walls (16) of the tube (15).

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