Mechanical assembly system for metal profiles.

Abstract

Title: System for assembling two metal profiles System for assembling two metal profiles, where a first profile (1) is intended to be secured to a second profile (2) by contacting one of its ends (10) with a lateral face (20) of the second profile (2), this lateral face (20) comprising a C-shaped groove (21) in which a support counterplate (4) is slid, pierced with at least one hole (40) for the passage of a screw (3) intended to be screwed into the end of a cell (11, 12) of the first profile (1), the support counterplate (4) being associated with a key (5) of peripheral shape and dimensions allowing it to be inserted without play, in the internal space (14) of the end (10), of the key (5) comprising means (54, 57) for fitting into the counterplate (4) one of which (54) is also suitable for fitting tightly into the opening (26) of the C-shaped groove (21). Figure for the abstract: Fig. 1

Description

Title of the invention: Mechanical assembly system for metal profiles.

[0001] The present invention relates, in the field of metal joinery, to a system for mechanically assembling metal profiles for the production of a frame.

[0002] The present invention relates more particularly to the assembly of aluminum or similar profiles, resulting from extrusion, and in particular, but not limited to, in the field of gates.

[0003] The manufacture of a frame of extruded profiles requires assembling profiles forming angles between them, in the same plane or not, the most frequent assembly consisting of fixing to the end of a profile another profile arranged transversely, whether perpendicularly or not.

[0004] Such an assembly can be carried out in different ways, which can present, depending on the desired result, advantages and disadvantages.

[0005] Assembly systems are thus known which consist of adapting the profiles by machining for the purpose of fitting together for example, then securing the assembly by screwing and / or welding. These systems make it possible to obtain frames of great rigidity, with the disadvantages, however, of requiring precise manufacturing because on-site adjustment is no longer possible, and of making disassembly impossible.

[0006] An assembly system is also known which makes it possible to avoid the aforementioned drawbacks, that is to say that it allows on-site adjustments, that it requires little or no machining operation, that it is perfectly dismountable, and also that it is less expensive.

[0007] This system for assembling two profiles consists of passing a screw transversely through a first profile, which is screwed axially into an internal longitudinal groove of the second profile, the end of which is brought into lateral contact with the first, said groove being tubular or partially tubular of the alveoli or screw groove type, and possibly tapped beforehand. This assembly is completed by the installation of a metal support plywood, which can also be made of aluminum, slid into a C-shaped groove that the first profile has on its assembly side, and arranged by sliding at the chosen location. The support plywood is pierced with a hole through which the screw passes, and its thickness corresponds to the depth of the C-shaped groove, so as to allow the screw to be tightened without risk of deformation by crushing said C-shaped groove. hole made in the bottom of the C-shaped groove for the passage of the screw can be made oblong in the longitudinal direction of the first profile, which allows for adjustment play during assembly.

[0008] Preferably, when possible, provision is made to use at least two screws to be screwed into the second profile to avoid axial pivoting phenomena of the latter.

[0009] In the particular field of the gate, it is necessary for it to be very rigid to withstand the stresses to which it is subjected, particularly in strong winds.

[0010] However, if until now all assembly systems offered sufficient rigidity, this is no longer the case since demand is moving towards solid and large portals, which increases the constraints and does not allow warping to be avoided.

[0011] Despite all the drawbacks they involve, only assembly systems implementing precision machining and screwing and / or welding operations seem to offer the required rigidity.

[0012] The present invention aims to overcome this drawback by proposing an assembly system allowing great rigidity of construction, while not requiring precision machining, allowing on-site adjustment and remaining removable, and while remaining financially competitive.

[0013] The system for assembling two extruded profiles, made of aluminum or similar, according to the invention, where one of the two profiles, called the first, is intended to be secured to the other profile, called the second, by contacting one of its ends with a lateral face of said second profile, said lateral face comprising a C-shaped groove adapted to house, after sliding, a support plywood pierced with at least one hole for the passage of a screw passing through the bottom of said C-shaped groove by hole, and intended to be screwed into the end of a tubular or partially tubular groove of the alveoli type or screw groove that said first profile comprises, is characterized in that said support plywood is associated with a key, of shape and peripheral dimensions allowing it to be inserted without play, at least transversely in a part of the internal space of the end of said first profile, and comprising,projecting from its face intended to come into contact with said lateral face, an element of thickness corresponding to that of the wall of said lateral face and of width allowing it to fit tightly in the opening of the C-shaped groove, and of which an extreme part, in the lengthwise direction, extends beyond said key to come in line with the end of the tubular or partially tubular groove of the alveoli type or screw groove of said first profile, without obscuring the screw orifice.

[0014] It will be understood that the plywood and the key are assembled to form a single piece that extends tightly into both the first and second profiles, thus ensuring greater rigidity. The element embedded in the opening of the C-groove prevents pivoting, while the key is held in place by wedging the part of the element projecting beyond the key between the end of the screw groove and the plywood.

[0015] According to an additional characteristic of the assembly system according to the invention, the element which projects from the key has a thickness greater than that of the wall of the profile at the level of the C-shaped groove, the difference in thickness being compensated by a cavity made opposite in the plywood.

[0016] This allows the key to fit into the plywood, ensuring increased rigidity.

[0017] According to another additional characteristic of the assembly system according to the invention, the element which projects from the key is in the form of a parallelepiped block, fitting perfectly into the opening of the C-shaped groove.

[0018] According to another additional characteristic of the assembly system according to the invention, the plywood and the key comprise mutual interlocking means, located externally to the opening of the C-shaped groove, said key comprising at least one projecting element designed to be able to be introduced into a housing that said plywood comprises, after passing through at least one machining carried out in the wall of the lateral face, externally to the opening of the C-shaped groove.

[0019] If this embodiment requires machining operations, these do not need to be very precise, since it is not a question of nesting but of freedom of passage.

[0020] According to a preferred embodiment of the assembly system according to the invention, the key comprises two projecting elements, arranged on either side of the opening of the C-shaped groove and the plywood two housings.

[0021] This increases the cohesion of the plywood with the key, and also prevents the C-groove from opening under stress.

[0022] Depending on the structural characteristics of the second profile, the plywood and the key can be configured to use multiple screws. It is also possible to consider using a single plywood with multiple keys.

[0023] When producing a frame comprising several first profiles assembled to the same second profile, the assembly system according to the invention allows perfect alignment of said first profiles.

[0024] Furthermore, if the first and second profiles are not intended to be assembled perpendicular to each other, a key is used whose screw passage hole, or holes, is shaped to allow angular movement in the axial plane of said second profile.

[0025] The advantages and characteristics of the assembly system according to the invention will emerge more clearly from the description which follows and which refers to the appended drawing, which represents a non-limiting embodiment thereof.

[0026] In the attached drawing:

[0027] [Fig. 1]. represents a perspective and exploded view of an assembly system according to the invention,

[0028] [Fig.2]. represents a plan view of an element of the same assembly system,

[0029] [Fig.3]. represents a sectional view along the axis XX' of [Fig.2],

[0030] [Fig.4]. represents a perspective and exploded view of an alternative embodiment of the assembly system according to the invention,

[0031] [Fig.5]. represents a perspective and exploded view of another variant of sheave lization of the assembly system according to the invention,

[0032] [Fig.6]. represents a perspective and exploded view of another variant of sheave lization of the assembly system according to the invention,

[0033] With reference to [Fig. 1] one can see on the one hand a first profile 1, intended to be arranged horizontally and which will be defined as a crosspiece, and on the other hand a second profile 2, intended to be arranged vertically and which will be defined as an upright. The assembly system according to the invention is intended to achieve the securing of the crosspiece 1 to the upright 2, and more particularly, of one end 10 of the crosspiece 1 on one side of the upright 2.

[0034] The crosspiece 1 and the upright 2 consist of aluminum or aluminum alloy profiles produced by extrusion.

[0035] The crosspiece 1 has, non-limitingly, the particularity of being of generally rectangular section, and of having internally two partially tubular grooves 11 and 12 of the alveoli type, aligned centrally and parallel to the large sides 13 of the section, and separated by a space 14.

[0036] The upright 2 has, non-limitingly, the particularity of being of generally rectangular section, of comprising on one side 20, the one to which the end 10 of the crosspiece 1 must be attached and fixed, a C-shaped groove 21, namely that it comprises a bottom 22, from each of the edges of which extends outwards a partition 23 extended by a wing 24, parallel to the bottom 22. The free edges 25 of the wings 24, delimit the width of an opening 26 giving access to an interior space 27.

[0037] It will be noted that in the embodiment shown, the upright 2 comprises, not exclusively, a C-shaped groove 21 on three of its sides.

[0038] The assembly system according to the invention comprises, in addition to two screws 3, a plywood 4 and a key 5, the latter also being shown in Figures 2 and 3.

[0039] In a manner similar to a state-of-the-art assembly, the plywood 4 is present in the form of a piece of section allowing it to be slid tightly into the C-shaped groove 21, and comprising at least one hole 40, in this case two, allowing the passage of the screws 3 intended to be screwed into the cells 11 and 12, the bottom 22 of the C-shaped groove 21 comprising two holes 28 each allowing the passage of the heads 30 of the screws 3 so that these come to tighten the plywood 3 against the crosspiece 1 by enclosing the wings 24.

[0040] According to the present invention, the assembly system further comprises a key 5, which is in the form of a plate 50 of perimeter shape allowing it to be placed in the space 13 of the crosspiece 1. This insertion is preferably made with a minimum of play, in particular in the transverse direction, the lateral edges 51 coming into internal contact with the sides 13, while the upper 52 and lower 53 edges are shaped to go around the cells, respectively 11 and 12.

[0041] This plate 5 comprises, projecting from the face opposite that introduced into the space 14, a parallelepiped block 54, of a width allowing it to be introduced into the opening 26, and of a thickness at least equal to that of the wings 24, but preferably greater, and whose extreme edges 55 and 56 extend beyond the edges 52 and 53 respectively.

[0042] As regards the plywood 4, it comprises, between the holes 40, on its face 41 intended to come in line with the opening 26, a recess 42 with peripheral dimensions corresponding to those of the block 54.

[0043] Furthermore, in the embodiment shown, the key 5 comprises, projecting on either side of the block 54, two fingers 57, while on the one hand the plywood 4 comprises on either side of the recess 42, two cavities 43 capable of tightly housing the ends of the fingers 57, and on the other hand, openings 29 are made in the wings 24.

[0044] During assembly, the plywood 4 is slid into the C-shaped groove 21 of the upright 2, the key 5 is associated with it by inserting the fingers 57 into the cavities 43 passing through the openings 29, and also by engaging the block 54 in the recess 42 passing through the opening 26, while the plate 50 is introduced into the space 14 of the crosspiece 1, the ends of the cells 11 and 12 coming to bear against the extreme edges 55 and 56 of the block 54, to pinch and immobilize the key 5. The screws 3 are then screwed into the cells 11 and 12 while being tightened against the plywood 4, it will be noted that the extreme edges 55 and 56 of the block 54 are configured to allow the passage of the screws 3, namely that they each comprise a arc-shaped cutout.

[0045] It will also be noted that the recess 42 is bordered above and below by protrusions 44, of a thickness corresponding to that of the wings 24, and intended to come to rest against alveoli 11 and 12.

[0046] It will be understood that the plywood 4 and the key 5 form, after tightening the screws 3, a single piece introduced both into the C-shaped groove 21 and into the space 14, the plywood 4 being blocked in the C-shaped groove 21 of the upright 2, while the key is blocked in the crosspiece 1, so as to ensure that the crosspiece 1 cannot pivot on the upright 2.

[0047] In addition, this allows perfect alignment of the crosspiece 1 with respect to the axis of the upright 2. Indeed, during assembly, the plywood 4 and the key 5 advantageously serve as a centering guide, and allow the crosspiece 1 to be automatically centered on the upright 2.

[0048] It will also be noted that the assembly system according to the invention allows the mounting of a chassis vertically, the key 5 making it possible to hold the plywood 4 during assembly, thus preventing it from falling during vertical adjustment.

[0049] It should be noted that in a simpler version, not shown, which in particular does not require a machining operation to produce the openings 29, the key 5 does not include the fingers 57, its assembly to the plywood 4 and its locking in rotation being ensured by the engagement of the block 54 in the recess 42.

[0050] The presence of the fingers 56 however offers the advantage, in addition to increased solidarity between the key 5 and the plywood 4, of maintaining the groove in C 21 and preventing it from flaring.

[0051] With reference to figures 4, 5 and 6, variants of the assembly system according to the invention can be seen.

[0052] In [Fig.4], the crosspiece 1 being of great height, an assembly is used comprising a plywood 4 and a key 5 in the upper part, and another assembly comprising a plywood 4 and a key 5 in the lower part, each of these assemblies being shaped to be used with a single screw 3.

[0053] In [Fig.5], the crosspiece 1 is also of great height, a very long plywood 4 is used, associated with two keys 5, one arranged in the upper part and the other in the lower part, each of the keys 5 being shaped to cooperate with two screws 3.

[0054] Referring now to [Fig.6], one can see the assembly of a crosspiece 1 to an upright 2, where the crosspiece 1 is not perpendicular to the upright 2, but forming an angle in an axial plane of the upright 2.

[0055] In this case, a plywood 4 is used in which the holes 40 allow angular movement, by being oblong for example.

[0056] Whatever the embodiment of the assembly system according to the invention, the frames obtained have better resistance to warping, and are easily can be assembled and disassembled on site.

Claims

Claims

1. System for assembling two metal profiles, extruded, made of aluminum or similar, where one (1) of the two profiles, called the first, is intended to be secured to the other profile (2), called the second, by contacting one of its ends (10) with a lateral face (20) of said second profile (2), said lateral face (20) comprising a C-shaped groove (21) adapted to house, after sliding, a support plywood (4) pierced with at least one hole (40) for the passage of a screw (3) passing through the bottom (22) of said C-shaped groove (21) by a hole (28), and intended to be screwed into the end of a tubular or partially tubular groove of the alveoli type (11, 12) or screwing groove which said first profile (1) comprises, characterized in that said support plywood (4) is associated with a key, (5) of shape and peripheral dimensions allowing it to be inserted without play,at least transversely in a part of the internal space (14) of the end (10) of said first profile (1), and comprising, projecting from its face intended to come into contact with said lateral face (20), an element (54) of thickness corresponding to that of the wall of said lateral face (20) and of width allowing it to fit tightly in the opening (26) of the C-shaped groove (21), and of which an extreme part (55, 56), in the lengthwise direction, projects beyond said key (5) to come in line with the end of the tubular or partially tubular alveoli-type groove (11, 12) or screwing groove of said first profile (1), without obscuring the screwing orifice.

2. Assembly system according to claim 1, characterized in that the element (54) which projects from the key (5) has a thickness greater than that of the wall of the profile at the level of the C-shaped groove (21), the difference in thickness being compensated by a cavity (42) made opposite in the plywood (4).

3. Assembly system according to claim 1 or claim 2, characterized in that the element (54) which projects from the key (5) is in the form of a parallelepiped block, fitting perfectly into the opening (26) of the C-shaped groove.

4. Assembly system according to any one of claims 1 to 3, characterized in that the plywood (4) and the key (5) comprise mutual interlocking means (43, 57), located externally at the opening (26) of the C-shaped groove, said key (5) comprising at least at least one projecting element (57) designed to be able to be introduced into a housing (43) included in said plywood (4), after passing through at least one machining (29) made in the wall of the side face (20), externally to the opening (26) of the C-shaped groove (21).

5. Assembly system according to claim 4, characterized in that the key (5) comprises two projecting elements (57), arranged on either side of the opening (26) of the C-shaped groove (21), and the plywood (4) two housings (43).

6. Assembly system according to any one of claims 1 to 5, characterized in that it comprises, for the fixing of a first profile (1), several plywoods (4) and as many keys (5).

7. Assembly system according to any one of claims 1 to 5, characterized in that it comprises, for fixing a first profile, (1) a plywood (4) and several keys (5).

8. Assembly system according to any one of claims 1 to 5, characterized in that the hole (40), or holes, for the passage of screws in the plywood (4), for non-perpendicular fixing of a first profile (1) to a second profile (2), is shaped to allow angular movement in the axial plane of said second profile (2).

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