FR3028546A1 - METAL CLOSURE POLE PITCH AND ASSEMBLY COMPRISING A METAL POLE AND A SUCH PITCH - Google Patents

Abstract

The invention relates to a metal terminal (1) for a fence post, intended to be driven vertically into the ground, of the type consisting of a section segment (2) C comprising a core (7) flanked by two lateral wings ( 8, 9) whose free ends are each extended by a return directed towards the longitudinal plane of symmetry of said C-section. The base according to the invention comprises an iron (3) made of a T-shaped core (15). and two wings (16, 17), a part of this T-shaped iron being disposed inside the C-profile (2), each flange (16, 17) being welded on a return of the profile (2) and its core (15) being located in the longitudinal plane of symmetry of said profile (2), the other part of the T-shaped iron being located projecting from the profile (2) protruding from its lower end (4). Such a base is more particularly intended for the implantation of fence posts in rocky soil.

Description

FIELD OF THE INVENTION The present invention relates to a profiled metal fence post metal base, said profiled metal post being more particularly intended to be erected vertically on rocky or even rocky terrain. Naturally, the invention also relates to any assembly consisting of a profiled metal fence post and a metal base receiving said pole and having the characteristics which will be defined below. BACKGROUND OF THE INVENTION Poles have long been known to be used as supports for various types of fences, including tensioned wire and / or wire mesh. Metal poles quickly replaced wooden poles for obvious reasons of strength and durability. The lower portion of the metal post is generally pointed to allow easy penetration into the ground. However, the threshing of the metal pole in the ground, obtained by striking the pole from top to bottom at its upper end, for example by means of a pneumatic hammer, is sometimes difficult if the post is of great length. In addition, the flexibility of the metal stake leads to a lack of precision in the direction and depth of penetration into the ground. In order to overcome the aforementioned drawbacks and to facilitate the installation of profiled metal fence posts, the height of which is rarely less than 1.50 meters and most often reaches or even exceeds 2 meters, it is now well known to associate with each of these poles a metal base made in the form of a short metal profile, whose height is generally of the order of 0.30 to 0.50 meter and whose cross section is complementary to that of the post of fence, this profile segment constituting said base having been previously planted vertically in the ground being beaten until it is completely buried by means of a pneumatic hammer which strikes the upper end of said profile segment. Around each of these profiled bases, the fence post is then fitted into force. The metal sections respectively constituting the bases and the fence posts are most often obtained by cold forming, and they most commonly have a quadrangular cross section, generally open, which has the shape of a C and which is then constituted a central core framed by two lateral wings each extended by a return-oriented return extending the other wing.

At least one of the faces of the short section constituting the base, generally the core of such a profile, has outwardly projecting protrusions so as to form anti-tearing means of the fence post after the the lower part of it has been force-fitted around the base. Furthermore, in most cases, the base also comprises a shovel having substantially the shape of an isosceles trapezium having a small base and a large base, said shovel being welded laterally to said short section, on the longitudinally open face of the latter. ci, so that the axis of symmetry of said trapezium is contained in a longitudinal plane of symmetry of said short section, the large base then being located on the side of the upper end of the section segment 3028546 3 in C and the small base being located on the side of the lower end of said segment. Such a metal base, particularly with regard to the shape of its shovel, is known from documents FR-2,429,309, FR-2,568,615 and FR-2,868,458 or US-1,454,649. As for the fence post, for its part which after fitting emerges from the ground, it is provided on at least one of its walls, usually on its soul, latches regularly spaced, projecting from said wall , Said latches, intended for fastening and holding the wires or the wire of the fence, being obtained by pre-cutting and preforming of the metal sheet during the profiling of the fence post. The buried metal bases, and hence the fence posts 15 which they receive by press fitting, are arranged at substantially regular intervals along alignments imposed by the boundaries of the railway, road or motorway rights-of-way, or by the boundaries of the private properties, green spaces, agricultural fields, hunting reserves, etc. that should be fenced. If a base of the above-mentioned kind, in particular that fitted with a shovel, generally gives full satisfaction for the most commonly found soft and mobile terrain, it presents a disadvantage in the difficult, rocky terrain, as well as in the ground. edges of forests because of the frequent tree roots that can be encountered during its penetration into the soil. The small base of the trapezoidal shovel of this base can indeed abut on a stone, or on the root of a tree, and the base is then deviated from the vertical during its depression. It has been proposed to reduce the dimensions of the shovel, or even to remove it in order to be able to drive a base more easily in rocky soil but none of such modifications does not lead to a satisfactory result. The C-section segment constituting the base bends or is deviated from the vertical as and when it is driven, which renders it unsuitable for any association with a fence post since the latter could not be implanted with the desired verticality. Sometimes also, because of the resistance that the C-profile segment opposes any depression, the upper end of said profile deforms when struck by the pneumatic hammer so that even if the base can be sufficiently buried in the ground, it is necessary to cut several centimeters of its upper part to eliminate all deformed areas and allow the interlocking of the fence post around the base and sectioned.

The present invention therefore aims to improve the metal bases of the aforementioned kind, and it is more particularly intended to facilitate the driving of such bases in all types of terrain, including those in which stones and roots are buried.

SUMMARY OF THE INVENTION The object of the present invention is therefore to provide a post-to-ground metal post of the type consisting of a C-section metal section segment having an upper end and a lower end and comprising a core flanked by two lateral flanges whose free ends are each extended by a return directed towards the longitudinal plane of symmetry of said C-section, said base being characterized in that it further comprises an iron of cross-section T consisting of a core and two wings extending substantially perpendicular to both sides of this core, a portion of this T-iron being disposed inside the C-section, each of its wings being welded on a return of the C-profile and its core being substantially located in the longitudinal plane of symmetry of the C-section, the Part of this T-shaped iron is located projecting from the C-section protruding from its lower end. The T-shaped iron is thus the part of the base according to the invention which penetrates first the floor in which said base is to be buried. It is therefore understood that, due to the shape of this first T-shaped part, the depression of the base 10 according to the invention is improved because there is no longer any fear of deviation caused by the stones, pebbles and roots buried deeper. Depression of the second part of the base is also facilitated since then the most fragile component of this second part, namely the C-section segment, is stiffened internally by the T-shaped iron. Advantageously, the T-iron extends inside the C-profile and over the entire length thereof so that the upper end of the T-shaped iron is located in the same plane as the upper end. Thus, the T-shaped iron is a stiffening element over the entire height of the C-section. In addition, the tool that strikes the upper end of the base to beat the latter in the ground strikes. makes each stroke on the ends of two sections, one in C, the other in T, welded to one another, which eliminates any risk of deformation of the upper end of the base. Advantageously, the lower end of the T-iron is flat and perpendicular to the general direction of said base. This form further reduces the risk of T-iron deflection when encountering a stone or root. Preferably, the free end of the core of the T-shaped iron is located near the inner face of the core of the profile in 3028546 6 C. The risk of deformation of the C-section during the depression of the base is thus further reduced. Very advantageously, the portion of the T-shaped iron projecting from the C-shaped section protrudes from the lower end of the latter with a length of between 1/4 and 3/2 of the length of the C-section. As a preferred construction, the core of the C-profile has at least one protruding boss adapted to come into contact with the inner face of the core of the fence post fitted around the upper end of said base for the purpose of constituting a anti-wrenching device. Naturally, the second subject of the present invention is an assembly consisting of a metal base and a metal post fitted in the upper part of the base, said assembly being remarkable in that its base has at least one of the features outlined above. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood and other features and advantages will appear more clearly on reading the following description given by way of example, with reference to the appended drawings, in which: FIG. a perspective view of the metal post of fence post according to the invention, - Figure 2 is a perspective view of an assembly consisting of the base according to the invention buried in the ground and in the upper part of which was fitted a fence post on which are stretched the wires of a mesh, - Figure 3 is an end view of the metal base according to the invention, - Figures 4, 5 and 6 are respectively rear, side and front views of the base according to the invention.

DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION FIG. 1 is a perspective representation of a base 1 according to the invention.

This base 1 is composed in the upper part, in known manner, of a segment 2 of C-section cross-section. To this known element 2 is associated an iron 3 with a C-shaped cross-section which is in part internal and which protrudes from the lower end 4 of the C-section segment.

The T-iron 3 extends at least for a significant portion inside the C-shaped section 2, or is of a length such that the upper end 5 of the iron 3 is ideally located at the same level as the upper end 6 of the C-profile. The upper ends 5 and 6 of the iron 3 and the profile 2 are preferably coplanar, this configuration having the advantage of offering better resistance when threshing in the ground of the base 1. By construction, the profile section 2 in C constituting the upper part of the base 1 comprises a core 7 flanked by two lateral wings, respectively left 8 and right 9, the free ends respectively 10 and 11 of said flanges 8 and 9 being each extended by a return respectively 12 and 13 oriented towards the return extending the other wing, that is to say directed towards the longitudinal plane of symmetry 14 of the section 25 2 C. For its part, the iron 3 of cross section in T pa rtially integrated inside the profile 2 in C consists of a core 15 and two wings 16 and 17 extending substantially perpendicular to both sides of the core 15. In accordance with the invention, the wings 16 and 17 of the iron 3 T are welded at 18 on the inner faces of the returns 12 and 13 of the C-profile. The core 15 of the iron 3 T is then located in the longitudinal plane of symmetry 14 of the section 2. The height of the core 15 is therefore advantageously chosen so that the free end of said core is then located in the immediate vicinity of the inner face of the core 7 of the C-section 2. The core 15 can thus prevent any deformation of the core 5 7. The welds 18 can be made either on all the zones where the wings 16 and 17 of the iron 3 in T are in contact with the returns 12 and 13 of the profile 2 in C, or in a few points of these contact zones, that is to say at the extremal parts of the contact zones as shown in Figure 6. The metal fence post 19 will be fitted over almost the entire height of the C-section 2 of the base 1, as can be seen in Figure 3.

The cross section of the post 19 is consequently C and is complementary to that of the profile 2. In order to prevent the post 19 from tearing off relative to the base 1, the core 7 of the profile 2 thus advantageously comprises at least a boss 20 in relief, boss on which the inner face of the core 21 of the profile 19 will rest. Furthermore, in order to receive and hold the wires 22 of the fence fence, the core 21 of the post 19 comprises a plurality of raised pawls 23 arranged at substantially regular intervals.

In a particularly advantageous construction, the boss (es) 20 will be provided in relief at a location such that they may each cooperate with one of the latches of the post , in the manner of a snap. This construction will make it even more difficult to tear off the post 19. It is known that the post 19 must usually be fitted on a base height of the order of 30 to 50 cm. Thus, the base according to the invention will comprise a profile section 2 in C of the aforementioned length of 30 to 50 cm completed with a few centimeters, the two ends respectively lower 4 and upper 6 of this profile segment being formed cutouts perpendicular to the general direction of the profile.

According to the ground 24 in which the base 1 is to be buried, also according to the height of the fence post 19 and the weight of the fence 22 to be supported by the posts 19, the portion of the iron 3 T projecting C-section 2 will consequently project from the lower end 4 of the latter with a length that may vary between one-quarter and one-half times the length of the C-section 2, ie from about 15 to 75 cm. In order to better penetrate the soil, especially if the probability of bursting buried stones or roots is important, the lower end of the T-shaped iron 3 is also flat and perpendicular to the general direction of the base 1. it goes without saying that the invention is not limited to the only preferred embodiments described above. On the contrary, it encompasses all possible embodiments, provided that the latter do not depart from the scope defined by the appended claims which define the scope of the present invention.

Claims (7)

CLAIMS1) Metal post (1) of a fence post, intended to be driven substantially vertically into the ground (24), of the type consisting of a segment of metal section (2) of cross section C having an upper end (5) and a lower end (4) and comprising a core (7) framed by two lateral wings (8, 9) whose free ends (10, 11) are each extended by a return (12, 13) directed towards the plane of longitudinal symmetry (14) of said C-shaped section (2), said base being characterized in that it further comprises an iron (3) of T cross-section consisting of a core (15) and two wings (16, 17) extending substantially perpendicularly on either side of this web (15), a part of this iron (3) T being disposed inside the profile (2) C, each of its wings (16). 17) being welded on a return (12, 13) of the C-profile and its core (15) being substantially s the longitudinal plane of symmetry (14) of the C-section, the other part of the iron (3) T being located projecting from the profile (2) in C overflowing from its lower end (4). 2) metal post (1) fence post according to claim 1, characterized in that the iron (3) T extends inside the profile (2) C and over the entire length thereof so that the upper end (5) of the T-shaped iron is located in the same plane as the upper end (6) of the C-profile. 3) metal post (1) fence post according to any one of claims 1 and 2, characterized in that the lower end (25) of the iron (3) T is flat and perpendicular to the general direction of said base. 3028546 11 4) metal post (1) fence post according to any one of claims 1 to 3, characterized in that the free end of the core (15) of the iron (3) T is located near the the inner face of the core (7) of the section (2) in C. 5) metal post (1) fence post according to any one of claims 1 to 4, characterized in that the portion of the iron (3) T projecting from the profile (2) C extends beyond the lower end (4) of the latter with a length between 1/4 and 3/2 of the length of the C-section. 6) Metal base (1 = of fence post according to any one of claims 1 to 5, characterized in that the core (7) of the section (2) C has at least one protruding boss (20) apt to come into contact with the inner face of the web (21) of the fence post (19) fitted around the upper end (2) of said base to form an anti-tearing device. 7) Assembly consisting of a metal base and a metal pole fitted in the upper part of the base, characterized in that said base is made according to any one of claims 1 to 6.