ES2697514A2 - ANCHORAGE ASSEMBLY AND HARDWARE SYSTEM TO JOIN FURNITURE PARTS (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Assembly system and anchor hardware to join pieces of furniture. The anchor fitting (1) is associated with cylindrical recesses (2) of the furniture parts in which some parts of the anchor fitting (1) are inserted; where inside the cylindrical recesses (2) are fitted tubular extensions (20) of a support (7) together with eccentric heads (13) that are part of the clamping mechanisms (8) that make up the anchor fitting (1) ). Parts of the perimetric contours of the eccentric heads (13) of the tightening mechanisms (8) are inserted in annular incisions (17) located on side faces (2a) of the cylindrical recesses (2) by turning the mechanism of tightening (8). It is emphasized that the assembly system allows a quick and simple assembly without weakening the corner areas of the pieces of furniture to be joined. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

ASSEMBLY SYSTEM AND ANCHORING HARDWARE TO JOIN PARTS OF

PIECE OF FURNITURE

Object of the invention

The present invention relates to an assembly system and anchoring hardware for joining pieces of furniture comprising at least one anchor fitting associated with a pair of cylindrical recesses in which two parts of the anchor fitting are embedded; so that the assembly system is intended to join parts of a piece of furniture that converge in corner areas that normally form an angle of 90 °, standing out that the system of the invention can also join adjacent corner areas of the piece of furniture forming different angles of 90 °. The assembly system of the invention achieves a solid, strong and firm connection between the different parts of the furniture. It is further emphasized that the assembly system of the invention allows a quick and simple assembly without weakening the corner areas of the furniture parts, contrary to what occurs conventionally with other assembly systems in which said corner areas are weakened.

Technical problem to solve and background of the invention

At present, different assembly systems are known for joining pieces of furniture (such as chipboard and other solid materials) comprising at least one anchoring fitting joining two pieces of furniture converging in corner areas; so that through the assembly system the furniture can be assembled, ensuring the union between the different pieces of furniture.

Some assembly systems are exterior (overlapping) and other interior (totally or partially introduced in the thickness of the material of the pieces of furniture to be joined).

In general, the external assembly systems are usually very bulky, breaking the interior aesthetics of the furniture, the anchoring consisting of a few short screws configured to thread into the wooden material of the pieces of furniture to be joined, so that because the parts of the current furniture have little thickness of material, it is not possible to use screws with a longer length to secure the connection with sufficient security, so that the connection is relatively weak.

The interior assembly systems include at least three machining operations in each pair of pieces of furniture to be joined: two machined in one of the parts and a machining in the other part of the furniture; so that this system of internal assembly tends to weaken excessively the areas of the pieces of furniture (panels / pieces) that are intended to be joined, and as a consequence there is a danger of breakage of said parts without the possibility of repair, being necessary replace the damaged pieces of furniture with new ones with the consequent increase in the economic cost that this entails.

Today the most used assembly system is the system that includes an eccentric mechanism that includes two or three components:

- A threaded nut or expansion nut that is placed in one of the parts of the furniture, highlighting that there are furniture manufacturers that do not include said nut, threatening a bolt directly to the material of one of the parts, without taking into account the fragility of the Used materials.

- A bolt that threaded on said nut (when included).

- An eccentric that connects with the bolt to make the union.

The three machining are made with different tools, so that a first machining is used to accommodate the nut or failing to directly screw the bolt; wherein said first machining is located in proximity to the edge of one of the pieces of furniture to be joined. A second machining is located on the edge of the other joint part to be joined, so that through said second machining the bolt is introduced. And a third machining to house the eccentric that engages with the bolt; where in said third machining the second machining through which the bolt passes ends. It should be noted that the first machining and the second machining are those that most weaken the assembly system of the pieces or pieces of furniture to be joined.

On the other hand, in the current assembly systems, in addition to the anchoring hardware, the union of the pieces of furniture is usually reinforced with spikes or wooden tufts. to help the centering, so it is necessary to leave gaps in the machining to be able to make the assembly more easily, getting an added reinforcement between the pieces of furniture join, due to the weakness created by the machining practiced, with the consequent increase in mechanization in the areas of the parts (pieces) of furniture to be joined.

These assembly systems present a great complexity and also weaken the corner areas of the pieces of furniture to be joined, so that during assembly, and even once the connection is made, breakages of furniture parts occur in said corner areas; what implies having to change the damaged piece of furniture with a new one, with the consequent expense that this implies.

Description of the invention

In order to achieve the objectives and avoid the drawbacks mentioned in the previous sections, the invention proposes a system for assembling furniture parts and anchoring hardware to join said furniture parts.

The assembly system comprises at least one anchor fitting associated with cylindrical recesses in which parts of the anchor fitting are inserted; where the cylindrical recesses are located on internal faces of parts of the furniture that converge in corner areas that form an angle between them.

Each anchor fitting comprises a support and two rotary tightening mechanisms which are inserted inside through holes of the support with axial retention of said clamping mechanisms to the support. where inside the cylindrical recesses fit tubular extensions of the support and eccentric heads that are part of the tightening mechanisms; and wherein the eccentric heads are located in coincidence with extreme curved portions that are part of the tubular extensions of the support.

The tightening mechanisms include lateral grooves in which fit a few lugs fixed to the tubular extensions of the support.

The support includes seating areas that are configured to rest on some surfaces of the furniture parts; where the tubular extensions start from the support areas of the support.

The tightening mechanisms are configured to rotate and move axially within the through holes of the support with a guided coupling formed by the lugs and the lateral grooves; where during an initial rotation of the tightening mechanisms parts of the perimetric contour of their eccentric heads penetrate into lateral faces of the cylindrical recesses, initiating an annular incision on the lateral faces of the cylindrical recesses.

During an angular space of the simultaneous rotation and axial displacement of the clamping mechanisms as a continuation of the initiation of the annular incision, the eccentric heads of the clamping mechanisms drag in the axial direction the furniture parts for tightening between them in the area corner wherein said axial direction corresponds to the imaginary longitudinal axis of the cylindrical recess of each of the furniture parts.

Each tightening mechanism comprises a cylindrical body and the eccentric head which is attached to one end of said cylindrical body; wherein said eccentric head includes a perimeter edge of curved contour that is interrupted by a first discontinuity and by a second discontinuity, between which a first tooth with a first sharp edge and a second tooth with a second sharp edge is generated; and where the first tooth is located in an initial zone far from an area of maximum eccentricity of the eccentric head, while the second tooth is located in the zone of maximum eccentricity.

The cylindrical body of the tightening mechanism includes on its curved lateral surface the lateral groove comprising a straight section and a helical section; where the straight section of the lateral groove is contained in a plane perpendicular to the generatrices of the curved lateral surface of the cylindrical body.

During the initial rotation of the clamping mechanism guided in the straight section of its lateral groove, the annular incision is generated on the lateral face of the cylindrical recess by means of the two (first and second) teeth of the eccentric head, said eccentric head being received completely in the ring incision, while during the turn and the simultaneous axial displacement of the tightening mechanism guided in the helical section of the lateral groove, axially entrains the furniture parts by joining them together. The first sharp edge of the first tooth performs a first pass in depth of the annular incision, while the second sharp edge of the second tooth makes a second pass in depth of the annular incision; where the depth of the second pass is greater than the first pass.

Each through hole of the support comprises an eccentric interior space delimited by a side wall of the tubular extension and an interior space that is a continuation of the eccentric interior space; wherein in said interior space an end section of the cylindrical body of the tightening mechanism is housed; and wherein each end curved portion is continuation of the area of greater thickness of the side wall of the tubular extension.

The tightening mechanism includes a first end blind hole and a second end blind hole which are located in opposite end regions; where the second end blind hole is located in a confluence zone of the cylindrical body and the eccentric head of the tightening mechanism.

The annular incision made by the first tooth together with the second tooth at a greater depth covers an angular amplitude of 180 ° of the lateral face of the cylindrical recess and said annular incision is located in the part closest to the lateral edges of the parts of the furniture. in coincidence with the corner areas of said parts of the furniture.

In an embodiment of the invention, the seat areas of the anchor fitting support rest on the internal faces of the furniture parts, while in another embodiment of the invention the seating areas of said support rest on a bottom of the recesses located on the internal faces of the furniture parts.

The anchoring hardware itself comprises a structure as described above, where said fitting basically comprises the support and the two clamping mechanisms with corresponding elements.

It is emphasized that with the assembly system of the invention the use of several components separately when all assembled in a single set of anchoring hardware that does not need to be disassembled neither for the assembly nor disassembly of the furniture besides being able to be assembled indistinctly in any of its positions and to be able to join different thicknesses of materials of the parts ( pieces / boards) of furniture with the same salad system.

It is also noted that the pieces of furniture to be joined only have a machining on each flat internal face of the parts to be joined made with the same tool, keeping a prudential distance to an edge of said parts so as not to weaken the material excessively; so that conventional machining located on the edge of one of the parts (pieces) of furniture is not done, as well as weakening the material excessively, it is an inconvenience for the professional who does not have automated machinery, becoming a difficult process for him .

Another particularity of the assembly system of the invention is that pieces cut at 90 ° and other different angles can be joined, such as 45 °, an option that is not possible with many assembly systems.

Furthermore, with the system of the invention it is possible to embed the anchor fitting by means of the recess (optional machining) from a certain thickness of the parts (pieces) of furniture to be joined so that the anchoring hardware is less visible.

With the assembly system of the invention, the pins for centering are not necessary because that centering function is done by the assembly system itself. It is also emphasized that the reinforcement function, in addition to not having weakened the material so much when machining, this reinforcement function is achieved by the corner reinforcement of the anchor fitting support.

It also highlights the ease and speed of assembly, which in a first phase is introduced a pair of parts (tubular extensions and eccentric heads) of each anchoring hardware inside the cylindrical recesses of the pieces of furniture to be joined. In a second phase of the assembly the tightening mechanism is rotated an angular space between 180 ° and 270 ° (between a half and three quarters of a turn), according to the assembly requirement, all without previously having to screw or introduce nuts, bolts or other accessories for the union, so it is possibly the fastest assembly system on the market, being able to assemble and disassemble as many times as necessary, without losing effectiveness and solidity in the joint.

Below, in order to facilitate a better understanding of this descriptive specification and forming an integral part thereof, a series of figures are attached in which the object of the invention has been represented with an illustrative and non-limiting character.

Brief description of the figures

Figures 1a, 1b.- They show some views of the assembly system and anchoring hardware for joining pieces of furniture, object of the invention. The assembly system comprises at least one anchoring hardware in combination with cylindrical recesses in which parts of the anchoring hardware are embedded; where said cylindrical recesses are located in said parts of the cabinet.

Figure 2.- Shows a view of two pieces of furniture that converge in a corner area, where one of the cylindrical recesses located in one of the furniture parts stands out.

Figure 3a.- Shows a plan view of some of the cylindrical recesses.

Figure 3b.- Shows a sectional view according to section AB of figure 3a.

Figure 4 shows a perspective view of an angular support that forms part of the anchor fitting.

Figures 4a to 4c.- They show different views of the angular support that forms part of the anchoring hardware.

Figure 5.- Shows a perspective view of a clamping mechanism that also forms part of the anchoring fitting that forms part of the assembly system of the invention.

Figures 5a to 5c.- They show different views of the tightening mechanism that forms part of the anchor fitting.

Figures 6 and 7.- They show some sectional views of the assembly system.

Description of an embodiment of the invention

Considering the numbering adopted in the figures, the assembly system for joining pieces of furniture comprises at least one anchor fitting 1 associated with a pair of cylindrical recesses 2 in which two parts of the anchor fitting 1 are embedded; of so that the assembly system is intended to join pairs of furniture parts 3, 4 converging in corner areas 18.

The two cylindrical recesses 2 are located on internal faces 5, 6 of the two furniture parts 3, 4 which can be boards or pieces of agglomerate or other solid materials, so that in said corner areas, the internal faces 5, 6 of the parts 3, 4 of the furniture forms an angle (a) between them.

Each anchor fitting 1 comprises an angular support 7 and two tightening mechanisms 8 which are inserted in through holes 9 of the angular support 7 which is formed by two branches 7a, 7b which converge at one end thereof in a reinforced joining area by means of a corner reinforcement 7c. It should be noted that said angle support could have a different configuration from the angle.

The two branches 7a, 7b of each angular support 7 include seating areas 10 that are configured to rest on the internal faces 5, 6 of the furniture parts 3, 4, so that in an embodiment of the invention as shown. in figure 1a, said seating areas 10 rest directly on the internal faces 5, 6 of the furniture parts 3, 4, while in another embodiment as shown in figure 1b, the seating areas 10 of the angular support 7 they rest on bottoms 11a of recesses 11 made on the internal faces 5, 6 of the parts 3, 4 of the furniture.

The seat areas 10 form the same angle (a) formed by the internal faces 5, 6 of the furniture parts 3, 4 in the corner areas 18.

Each tightening mechanism 8 comprises a cylindrical body 12 and an eccentric head 13 attached to one end of said cylindrical body 12; so that said eccentric head 13 includes a perimeter edge of curved contour that is interrupted by a first discontinuity 14 and by a second discontinuity 15 between which a first tooth 16 and a second tooth 23 are generated; where the first tooth 16 is located in an initial zone remote from a zone of maximum eccentricity of the eccentric head 13.

The first tooth 16 includes a first sharp edge 16a front and the second tooth 23 includes a second sharp edge 23a front.

The first sharp edge 16a is responsible for initiating an annular incision 17 on a lateral face 2a of each of the cylindrical recesses 2 during the assembly of the anchoring hardware 1 in the cylindrical recesses 2 located in the furniture parts 3, 4 one; wherein said annular incision 17 is a groove or groove; all this as will be described later in detail.

The cylindrical body 12 of the clamping mechanism 8 includes on its curved lateral surface a lateral groove 19 comprising a straight section 19a with an arc of circumference and a helical section 19b of lesser length than the straight section 19a. In an embodiment of the invention, the straight section covers an angular space around 180 °, while the helical section comprises an angular space around 100 °.

The straight section 19a is contained in a plane perpendicular to the generatrices of the curved lateral surface of the cylindrical body 12 of the tightening mechanism 8.

On the other hand, each angular support 7 includes two tubular extensions 20 of cylindrical shape which together with the eccentric heads 13 of the tightening mechanisms 8 are configured to fit inside the cylindrical recesses 2 of the furniture parts 3, 4, so that said tubular extensions 20 start from the seating areas 10 of the angular support 7.

Each of the tubular extensions 20 of the angular support 7 includes an eccentric internal space of cylindrical shape that is not coaxial with the outer surface of the tubular extension 20 generating a variation of thickness in the side wall delimiting said eccentric interior space.

Each of the tubular extensions 20 of the angular support 7 further includes an end curved portion 24 which is continuation of the side wall of the tubular extension 20; where the extreme curved portion 24 starts from the area of greater thickness of said side wall; and wherein an outer surface of the end portion 24 is a continuation of the outer surface of the tubular extension 20 of the angular support 7.

Each eccentric inner space of the tubular extension 20 forms part of the through hole 9 in which it fits the cylindrical body 12 of the clamping mechanism 8, protruding from outside said eccentric interior space the eccentric head 13 which is arranged in coincidence with the respective curved end portion 24 which forms part of the tubular extension 20.

In turn, each of the tubular extensions 20 of the angular support 7 includes a radial perforation 25 in which a peg 21 protruding inside the respective through-hole 9 of the angular support 7 fits, so that said lug 21 fits inside the groove side 19 and serves as a guide to the tightening mechanism 8 during the rotation of said tightening mechanism 8.

In line with what has been said in the previous paragraph and the sets of tubular extensions 20 and tightening mechanisms 8 within the cylindrical recesses 2 being adjusted, during an initial angular space of rotation of the tightening mechanism 8 around 180 °, this it does not advance in its axial direction because the lug 21 is engaged within the straight section 19a of the lateral groove 19 of the tightening mechanism 8.

On the other hand, when during the rotation of the tightening mechanism 8 the lug 21 fits inside the helical section 19b of the lateral groove 19, then the tightening mechanism 8 rotates and advances axially simultaneously; where a distance (d) (Figure 5c) of said axial advance can reach a measurement around three millimeters, without discarding other measurements; and where during the rotation and axial advancement of the tightening mechanism 8 drags each of the parts 3, 4 of the piece of furniture, the joining of said parts 3, 4 in the corner region 18 where said parts 3, 4 converge.

Each through hole 9 of the angular support 1 comprises the eccentric interior space delimited by the side wall of the tubular extension 20 and an interior space that is continuation of the first interior space, so that in said interior space an end section of the cylindrical body is received. 12 of the clamping mechanism 8 including a first hexagonal end blind hole 22 to be able to rotate said clamping mechanism 8 with a tool and thus be able to fix the assembly of the anchor hardware 1 to the two pieces 3, 4 of furniture to strengthen its union .

The tightening mechanism 8 includes a second hexagonal end blind hole 22 'located in the confluence zone of the cylindrical body 12 and eccentric head 13; where said second end blind hole 22 'is located at one end opposite another end (where the first end blind hole 22 is) of the tightening mechanism 8.

To carry out the assembly of two furniture parts 3, 4 by means of the assembly system of the invention, one starts from the situation in which each anchor fitting 1 is mounted, so that the two anchoring mechanisms 8 are fitted inside. of the through holes 9 of the two branches 7a, 7b of the angular support 7 and the lugs 21 are fitted into the lateral grooves 19 of the tightening mechanisms 8.

Starting from this premise, first each fitting 1 is mounted in correspondence with the corner area 18 in which the two furniture parts 3, 4 converge with their respective cylindrical recesses 2; where in said cylindrical recesses 2 the two tubular extensions 20 of the angular support 7 are inserted together with the eccentric heads 13 of the tightening mechanisms 8 located in the deepest part of the cylindrical recesses 2; and where in this phase of the assembly the areas of greater eccentricity of the eccentric heads 13 are located in coincidence with the extreme curved portions 24 of the tubular extensions 20, thus forming a cylindrical configuration that adjusts in the inside of the cylindrical recesses 2 of the parts 3, 4 of furniture.

Subsequently, each of the clamping mechanisms 8 is rotated, so that during the initial angular space of rotation, the first tooth 16, by means of its first sharp edge 16a, initiates the annular incision 17 on the lateral face 2a of each of the teeth. the cylindrical recesses 2 without axial advancement of the tightening mechanism 8; where during this initial rotation, the tightening mechanism 8 is guided in the straight section 19a of the lateral groove 19. Obviously said annular incision 17 is made thanks to the rotation of the tightening mechanism 8 and its eccentric head 13 which includes the first tooth 16 and the second tooth 23.

In this operation of rotation of the tightening mechanism 8, the second tooth 23 (with greater eccentricity than the first tooth 16 of the eccentric head 13 is inserted in the annular incision 17 initiated by the first tooth 16, where as the tightening mechanism 8 its second tooth 23 increases the depth of the section of the annular incision 17 due to the greater eccentricity of the second tooth 23 of the eccentric head 13, where as the turning mechanism 8 continues to rotate, the space also increases angle of the ring incision 17 until it reaches 180 °, without discard other angular spaces.

As the tightening mechanism 8 continues to rotate, a simultaneous axial and rotational displacement is generated thanks to the fact that the lug 21 is now located inside the helical section 19b of the lateral groove 19.

During the operation of turning and advancing the tightening mechanism 8 in which the lug 21 is engaged in the helical section 19b of the lateral groove 19 of said tightening mechanism 8, its eccentric head 13 drags each of the parts 3, 4, of the furniture in the axial direction taking as reference each of the cylindrical recesses 2, achieving on the one hand to fix more firmly the assembly of the anchor fitting 1 on the cylindrical recesses 2 and on the other hand it is possible to maximize the tightening between them of the furniture parts 3, 4 in its corner area 18; specifically tightening is carried out in contact areas 26 of said furniture parts 3, 4 (Figures 1a and 1b).

It should be noted that the extreme curved portions 24 of the tubular extensions 20 prevent pitching and instability of the anchor fitting 1.

Thus, during the turns of the two clamping mechanisms 8, the assembly and the fixation in the corner region of the two furniture parts 3, 4 is progressively strengthened, first thanks to the eccentricity of the eccentric heads 13 of the mechanisms of tighten 8 which initiate the annular incisions 17 on the lateral faces 2a of the cylindrical recesses 2; and secondly thanks to the axial advance of the eccentric heads 13 of the tightening mechanisms 8 that axially drag the parts 3, 4 to join them with maximum firmness in the corner area 18, as described above; wherein said axial advance corresponds to the axial direction of the cylindrical recesses.

In the following, the assembly process of each anchor fitting 1 is described in more detail to carry out the assembly and joining of the furniture parts 3, 4 materialized by boards and other solid materials, as previously mentioned .

a.- With the lug 21 at the beginning of the straight section 19a of the lateral groove 19, coinciding the part of maximum thickness of the side wall delimiting each of the tubular extensions 20 with the part of maximum eccentricity of the respective eccentric head 13 of the tightening mechanism 8 so that the assembly of the tubular extension 20 and eccentric head 13 configure a completely cylindrical structure, and in this way to be able to introduce said assembly by fitting it inside the cylindrical recess 2 previously made in the furniture parts 3, 4.

b. - Once introduced said assembly inside the cylindrical recess 2, the tightening mechanism 8 is rotated by means of the respective tool adjusting it inside one of the end blind holes 22, 22 'having said tightening mechanism 8 in either of its two ends, achieving that the zone of maximum eccentricity of the eccentric head 13 of the tightening mechanism 8 ceases to be opposite the extreme curved portion 24 that starts from the area of greater thickness of the side wall delimiting the tubular extension (20); wherein said eccentric head 13 will come into contact with the lateral face 2a of the cylindrical recess (2) of the furniture part 3 or 4 to be joined.

The first contact of the eccentric head 13 will be made by the first sharp edge 16a of the first tooth 16 that will carry out a part of the machining of the annular incision 17, which together the second tooth 23 will finish making the depth of the annular incision 17, facilitating its machining At the same time as the second tooth 23 is introduced into the annular incision 17 during the angular space of 180 ° which corresponds to the straight section 19a of the lateral groove 19 where the lug 21 is inserted, the second tooth 23 of the head eccentric 13 will be completely lodged within the section of the annular incision 17 that we have just made.

c. In this situation, the lug 21 is located at the beginning of the helical section 19b of the lateral groove 19, so that as the tightening mechanism 8 continues rotating, it advances simultaneously in the axial direction thanks to the guided coupling between the lug 21 and the lug 21. helical section 19b of the annular incision 19.

In this way, the tightening mechanism 8 performs an axial displacement within the recess 9 of the tubular extension 20, so that by being the second tooth 23 of the eccentric head 13 inserted in the annular incision 17, it will drag along with said eccentric head (13) to part 3 or 4 of the furniture to be joined to the respective area of seat 10 of the support 7 pressing against said seat area 10 and fixing it thereto.

The annular incision 17 carried out by the first tooth 16 together with the second tooth 23 at a greater depth covers the angular amplitude of 180 ° of the lateral face 2a of the cylindrical recess 2, and said annular incision 17 is located in the part closest to the lateral edges 3a, 4a of the furniture parts 3, 4 (boards), that is, where the corner areas 18 converge. However, in other embodiments of the invention, the annular incision 17 could also be located in other parts of the invention. the side face 2a of the cylindrical recess 2 different from the part closest to the side edges 3a, 4a of the furniture parts 3, 4.

As mentioned above, there are essentially two forms of assembly: according to whether the pieces 3, 4 of furniture to be joined are cut at 90 ° and other inclinations such as for example 45 °.

When the furniture parts 3, 4 are cut at 90 °, the center of the cylindrical recess 2 of one of the pieces of furniture to be joined, will be at the same distance between each seat base 10 and the center of the tubular extension. 20 of the angular support 7, while in the other part of furniture to be joined will be the same measure with the addition of the thickness of the piece of furniture to be joined.

When joining the two pieces of furniture, first enter any of the two tubular extensions 20 of the angular support 7 in the cylindrical recess 2 made in the furniture part 3 that is closest to the edge and we will fix it by turning the tightening mechanism 8. Next, the other tubular extension 20 of the support 7 is inserted into the cylindrical recess 2 of the other part 4 of a piece of furniture that is farther from the edge and the clamping mechanism 8 of the same way as the previous one, getting this last part 4 of furniture to the other part 3 furniture pair, joining each other in case there have been gaps 27 among them 3, 4 (figure 6) during assembly and pressing one of the parts 4 against the other part 3 giving security and stability to the union.

When the two furniture parts 3, 4 are cut at 45 ° or other angles other than 90 °, the distance of the cylindrical recesses 2 from the furniture parts to the cuts they will have the same measurement, which does not maintain an assembly order, proceeding to make the assembly in the same way as in the previous case (indistinctly for the piece of furniture that is started), obtaining the same results of security and stability in the union .

Claims (5)

1. - Anchoring hardware for joining pieces of furniture , characterized in that: - the anchoring fitting (1) comprises an angular support (7) in which are inserted two rotary tightening mechanisms (8) that are attached to said angular support (7) by lugs (21) subsequently recessed; - the support (7) includes tubular extensions (20) integrating curved end portions (24) that are continuation of a part of the side walls that are part of the tubular extensions (20); - said tubular extensions (20) comprise through holes (9) eccentric with respect to the perimeter of the tubular extensions (20) and where in each of which the clamping mechanism (8) is housed; joining the support (7) by the lugs (21) embedded in radial perforations (25) that are located transversally in the tubular extensions (20); leaving these tubular extensions (20) of seating areas (10) located on the two branches (7a) and (7b) of the angular support (7) that form an angle (a) between them and are reinforced in their joining area by means of a corner reinforcement (7c); wherein said seating areas (10) are configured to rest on the parts (3, 4) of furniture to be joined; - each tightening mechanism (8) comprises a cylindrical body (12) and an eccentric head (13) with respect to the cylindrical body (12) that is part of one of its ends; wherein said eccentric head (13) includes a perimeter edge of curved contour that is interrupted by a first discontinuity (14) and by a second discontinuity (15) between which a first tooth (16) and a second tooth (23) are generated. ; - the cylindrical body (12) of each tightening mechanism (8) includes in its curved lateral part a lateral groove (19) comprising a straight section (19a) and a helical section (19b); wherein within said lateral groove (19) the pin (21) that joins the tightening mechanism (8) with the support (7) forming the anchor fitting (1) is subsequently fitted; wherein the lug (21) and the lateral groove (19) constitute a guided coupling during the rotation of the tightening mechanism (8); - the tightening mechanism (8) includes a first end blind hole (22) and a second end blind hole (22 ') which are located in the opposite end areas; where the second end blind hole (22 ') is located in a confluence zone of the cylindrical body (12) and the eccentric head (13) of the tightening mechanism (8). 2. - Assembly system to join pieces of furniture with the hardware described in the Claim 1, characterized in that: - the anchor fitting (1) is associated with cylindrical recesses (2) in which some parts of the anchor fitting (1) are inserted; wherein the cylindrical recesses (2) are located on the internal faces (5, 6) of the parts (3, 4) of furniture to be joined that converge in some corner areas (18) that form an angle (a) between them; and where inside the cylindrical recesses (2) the tubular extensions (20) of the support (7) are fitted together with the eccentric heads (13) that are part of the tightening mechanisms (8) that make up the anchoring hardware (1). ); - parts of the perimetric contours of the eccentric heads (13) of the tightening mechanisms (8) are inserted in annular incisions (17) located on side faces (2a) of the cylindrical recesses (2) by rotating the tightening mechanism (8). 3. Assembly system for joining pieces of furniture, according to claim 2, characterized in that the annular incision (17) covers an angular amplitude of 180 ° of the lateral face (2a) of the cylindrical recess (2); wherein said annular incision (17) is located in the part closest to lateral edges (3a, 4a) of the parts (3, 4) to be joined to the furniture in coincidence with the corner areas (18). 4 - Assembly system for joining pieces of furniture, according to any one of the preceding claims 2 or 3, characterized in that the seating areas (10) of the support (7) rest on the internal faces (5, 6) of the parts (3, 4) of the pieces to be joined. 5. Assembly system for joining pieces of furniture, according to any one of the preceding claims 2 or 3, characterized in that the seating areas (10) of the support (7) optionally rest on a base (11a) of recesses ( 11) located on the internal faces (5) and (6) of the parts (3) and (4) of the pieces to be joined in order to make the anchor fitting (1) less visible.