ES2900631T3 - Combination of a stand with a shelf - Google Patents

Abstract

Combination of a support (9, 59) with a shelf (1) made of a set of wires (2) connected to each other by transverse reinforcement stiffeners (3), which shelf comprises: - at least one front wall called front (7 , 87) provided with at least one foot (12) and/or - at least one dividing wall called divider (6, 86) provided with at least one foot (12), wherein said support (9, 59) comprises a cavity (15) for housing and supporting an optional LED bar (8) and at least one elastic adjustment terminal and at least one coupling seat (14) characterized in that said terminal coupled to at least one stiffener (3) comprises: - a snap-fit C-mechanism with an upper extension (20) and a lower extension (21), which extensions are opposite and elastically stretchable and in their mating condition can be tensioned over a stiffener (3), wherein said extensions (19, 20) surround the opposite edges of said stiffener (3); - a coupling seat in the form of a hole (14) open towards an upper side of said support to house the corresponding feet (12) of said dividers (6, 86) and fronts (7, 87).

Description

DESCRIPTION

Combination of a stand with a shelf

The present invention relates to the technical field of store equipment for large points of sale and, in particular, to an accessory for merchandise display shelving. More particularly, the invention relates to a support for accessories (fronts, dividers, LED bars) used in connection with wire shelves. This type of shelving is well known in the art; Essentially two types of shelving are used, a first type supporting wire shelves and a second type supporting sheet metal shelves.

The first type of shelf is made of metal wires welded together to form a net capable of supporting merchandise. An example of such shelves is described, for example, in DE102005020253 of Wanzl Metallwarenfabrik KG.

The second type of shelf is produced by bending and welding sheet metal, as described, for example, in US2005593A of LUXE METAL FURNITURE COMPANY.

Often both types of shelves are used in the same point of sale, wire shelves as described in DE102005020253 and sheet metal shelves as described in US2005593A. Document EP2695547A1 in the name of HMY Group describes a shelving assembly, comprising at least one shelf for merchandise display, a lighting device and a support element in the form of a clip, configured to support said lighting device and to be mounted below of said shelf, wherein said support element comprises at least one guide member, and said lighting element comprises at least one complementary guide member configured to rotate with respect to said at least one guide member, such that the inclination of said lighting device can be adjusted between two extreme positions defined by at least one stop element of said support element. The support element described in this document can be coupled to a sheet metal shelf only, of the type described in document US2005593A.

US2016091177 by Pascal-Simon Houle describes a device for supporting lighting fixtures for shelves forming part of shelves for displaying merchandise. However, said devices are not in the form of clips, but are in the form of rails which are fixed to the leading edge of a shelf along their entire length, and are provided at their lower edge with a cavity for inserting an LED lighting device. The document EP3017724 di Pos Tuning Udo Vosshenrich GMBH & CO KG describes a different lighting system, in which at least one lighting means is placed in front of a package of merchandise, and illuminates at least the lower part of the merchandise. Unlike the previous two documents, the light is directed upwards. WO01/25577 to Burke Gibson Inc. describes a mounting bracket for a display stand. The mounting bracket attaches to the front of a sheet metal shelf. It cannot be used to support fronts or dividers. Although it is provided with an opening 40, nowhere in this document is it written that said opening can be used to house an LED bar.

Furthermore, partitioning such wire or sheet metal shelves via wire dividers is also known in the art. Said dividers occupy the entire short side of said shelves, to facilitate the filling of the shelf, especially when the goods are of small dimensions with respect to the dimensions of the shelf itself.

A device for partitioning a shelf is described, for example, in US9326604 to LogiQuip LLC. Another accessory, typical of both wire and sheet metal shelves, is a front to prevent packages from falling off the shelf onto the floor; such fronts are used especially when packages are particularly small or light, or when the shelf is tilted towards consumers.

In general, the dividers and fronts that can be applied to the two different types of shelves (wire and sheet metal) are different, which is a problem both for the shelf/accessory manufacturer and for the point of sale itself, since that both are required to produce and stock dividers and fronts for the two different types of shelves.

A second drawback stems from the fact that point-of-sale shelving today is frequently electrified to provide shelving with LED bars for lighting. These bars are typically attached to shelves and are an additional encumbrance. Until today, the presence of LED bars and dividers/fronts was mutually exclusive.

The objective of the present invention is to provide an accessory that allows the same dividers and fronts to be used in both types of metal sheet and wire shelves, practical to fix and remove, even in the presence of LED bars to illuminate said shelves.

This object is achieved by an apparatus and method having the features of the independent claims. Advantageous embodiments and improvements are specified in the dependent claims. The solution lies in a combination of a support with a wire according to claim 1, said support preferably made of plastic, which is fixed to wire shelves, which allows the same dividers and wire fronts used on the shelves to be used. of metal sheets.

The first advantage of the present invention is the elimination of an article code both for the manufacturer and for the point of sale, which allows, on the one hand, to reduce the number of stored article codes and, on the other hand, not to deprive of the specific type of divider/front needed at that very moment.

The second advantage of the present invention is the possibility of using the same support both when the shelves are illuminated by an LED bar and when they are free of LED bars, which also reduces the number of stored components in this case.

A third advantage is that, by using the support according to the present invention, when other dividers/fronts or even LED bars are to be added to a shelf, it is not necessary to disassemble the shelf itself.

A fourth advantage of the present invention is the limited aesthetic impact of the support according to the present invention, in particular when made of transparent plastics.

Other advantages and properties of the present invention are described in the following description, in which illustrative embodiments of the present invention are explained in detail based on the drawings:

Figure 1 Axonometric view of a typical wire shelf;

Figure 2 Axonometric top view of a sheet metal shelf with dividers and front;

Figure 2A Side section of one end of a sheet metal shelf, with the foot of a divider;

Figure 3A Axonometric view, from below, of a wire shelf with dividers and front according to a first embodiment of the support;

Figure 3B Axonometric view, from below, of a wire shelf with dividers and front according to a second embodiment of the support;

Figure 4 Axonometric view of a first embodiment of the support according to the present invention; Figure 5 Axonometric view of a second embodiment of the support according to the present invention; Figure 6 Side view of the second embodiment according to the present invention;

Figure 7 Axonometric view of different types of dividers and fronts for sheet metal shelves;

Figure 8 Axonometric view of different types of dividers and fronts for wire shelves.

Figure 1 shows a typical wire shelf. Said shelf comprises a plurality of metal wires 2 generally equidistant, welded to at least one stiffener 3 perpendicular to said wires. Said stiffeners 3 are flat parts of metal sheet a few centimeters high. Normally, to obtain an aesthetic shelf, two other metal wires 4 and 5 are welded to the two front and rear ends. These two wires 4, 5 do not contribute to the load-bearing capacity of the shelf, but improve its safety in use, and protect the protruding ends of the metal wires.

Figure 2 shows a sheet metal shelf 10 provided with a plurality of dividers 6 and a front 7.

As can be seen by comparing Figures 2 and 3, said dividers 6 and front 7 are identical and made of welded metal wires.

In the case of the sheet metal shelf 10 shown in Figure 2, the dividers 6 and the fronts 7 are provided with feet 12 (not visible in Figure 2) at least at their ends, and optionally with a central foot, which are inserted into the appropriate holes 11 provided on the shelf itself.

In particular, the metal sheet at the ends of shelf 10 is bent at C, as can be seen in the detail shown in Figure 2A. Said hole 11 is placed above a corresponding hole 11A provided in the lower part of the fold at C. Said foot 12 of divider 6 is inserted into both holes 11 and 11A to confer stability to the assembly. It is worth noting that the C-fold in the sheet metal is provided on both the front and back sides of the shelf 10.

In a preferred embodiment, the divider 6 is provided with a long and a short foot; the long foot has a suitable length for insertion into both holes 11, 11A, while the short foot has a suitable length for insertion into both holes 11, 11A. insert into hole 11 only. In this way a sufficient stability is obtained at the same time with an easier assembly.

Figures 3A and 3B show a wire shelf provided with dividers 6, fronts 7, an LED bar 8 and a plurality of brackets 9 (figure 3A) and brackets 59 (figure 3B) according to the present invention, which are intended to support 6 dividers, 7 front and an optional 8 LED bar.

The supports 9, 59 according to the present invention are mounted on stiffeners 3 through an elastic coupling end which breaks, and exerts a slight pressure of said support against said stiffener. As an indication, the distance between the stiffener 3 and the front 4 or rear 5 wire is slightly shorter than the length of the support 9 (side 16 of the support).

In one embodiment, the supports 9, 59 are inserted in the intermediate space between two adjacent wires 2 that form the supporting surface of the shelf, while they are snap-coupled to the transverse stiffener 3, to which the wires 2 are welded. that the distance between the stiffener 3 and the front and rear finishing wire 4 and 5 parallel to said stiffener is less than the length of said bracket 9, 59 in the direction of said distance, when fitted on the stiffener 3, the brackets 5, 59 are effectively held in place against accidental removal. In fact, the front wire 4 or the rear wire 5 hinders the translation of the supports 5, 59 in the direction of withdrawal of the stiffener 3, thus forming a decoupling limiter for said supports.

In Figures 3A and 3B it can be seen that the foot 12 of dividers and fronts is inserted into a specific hole 14 of the support 9, 5 itself. The depth of this hole is sufficient to confer mechanical stability to the assembly. Again from Figures 3A and 3B it can be seen that the support 9, 59 is provided with a cavity 15 that allows housing an LED bar 8, preferably in the form of a window closed on all peripheral sides, and through which said LED bar passes in the direction of its longitudinal axis.

Figure 4 shows a first embodiment of the support 9 according to the present invention. Preferably, said support is made of plastic, preferably transparent plastic, so that it has a minimal aesthetic impact, even when the metal wire of the shelf is coloured.

Said support 9 has essentially a rectangular shape, with two sides, the upper side 16 and the lower side 17, parallel to the shelf 1; and two lateral sides 18 and 19, perpendicular to the shelf 1.

On the upper side 16 of the support 9 said hole 14 is provided adjacent and perpendicular to the side 18 of the support itself, which houses the feet 12 of the dividers 6 and fronts 7. Said hole 14 must have a suitable diameter to house the feet 12; as the diameter of its metallic wire is approximately 5.5 mm, the hole 14 has a corresponding dimension, with the minimum assembly required to easily fix said feet 12. As an indication, the diameter of the hole 14 is approximately 6.2 mm.

On the other hand, the width of the support 9 must be general in such a way that said support 9 can be placed between two adjacent metal wires 2, which together with other wires 2 form a support shelf 1. As an indication, the span between two consecutive metallic threads 2 is 10 mm. Preferably, the width of said support 9 is approximately 9 mm.

One side 19 of the support 9 is intended to be press fit on a stiffener 3 and is therefore provided with two extensions 20, 21 protruding from said side 19; said extensions being an upper extension 20 and a lower extension 21. Together, said two extensions 20 and 21 and side 19 are generally C-shaped, and the distance of said extensions in the longitudinal direction of side 19 is compared with the length of the metal sheet that forms said stiffener 3, to which said support must be coupled. Once assembled, the support 9 is fixed through said two extensions 20 and 21 to the upper and lower ends of the stiffener 3, thanks to the presence of two slots, an upper slot 22 and a lower slot 23 provided in said extensions, respectively. The side 19 is placed backwards with respect to the position of the two slots 20 and 21, to ensure the support 9 sufficient elasticity to fit it under pressure on the stiffener 3.

When fixed, the support 9 fits rigidly against the stiffener 3 thanks to the fit of said two slots 22 and 23, respectively, at the upper and lower ends of the stiffener itself, and to the support of the impact step 26 provided in the zone of connection of the lower extension 21 to the side 19 against the vertical wall of the stiffener itself 3.

In this condition, said two extensions 20 and 21 adhere to the metal sheet that constitutes said stiffener, 10 which prevents the translation of the support 9 itself thanks to the slots 22 and 23.

According to one embodiment, the upper extension 20 is in the form of a hook that delimits a groove of a certain depth, while the lower extension 21 ends with a tooth with a transverse triangular section, to form an inclined conical surface that, when pushing the support 9 against stiffener 3, cooperates with its lower longitudinal edge, which contributes to the deformation in the direction of temporary stretching of the two extensions, and to the overcoming of said lower longitudinal edge of the stiffener 3 by said tooth, thus allowing the snap fit of said longitudinal edge lower in the groove 23. This is provided with a shorter depth with respect to the groove 22 in the opposite extension, and the tooth is provided with an inclined conical surface intended to cooperate in the same way with the lower edge of the stiffener 3, when a pull is exerted in the uncoupling direction.

Furthermore, said support 9 is provided with a cavity 15 intended to house an LED bar 8. The dimensions of said cavities 15 are such that different types of LED bars 8 can be comfortably housed. However, at the same time, the structure of the support it must remain adequately rigid to maintain its mechanical characteristics that support dividers 6 and fronts 7.

In particular, said cavity is in the form of a closed or closable window on all sides, so as to hold an LED bar, and completely surrounds it.

It is worth noting that the presence of such LED bars is optional and LED bars can potentially be added at a later stage.

According to one embodiment, to allow the easy coupling of said LED bars 8, the cavity or window of the supports 9 can be opened thanks to a locking mechanism 17, in particular in correspondence with the lower side of the supports. When the locking mechanism 17 is closed, its mechanical strength is sufficient to support the weight of an LED bar 8. However, a closed support 9 can be used while its cavity 15 is empty.

According to the first embodiment shown in Figure 4, the locking mechanism 17 is made up of a segment on the lower side of the support, which coincides with said cavity or window that houses an LED bar. Said segment of the lower side is connected to one end of the support 9 through a hinge 24 that allows oscillation in the direction of opening and closing in the form of a compass on said side of the cavity, without problems of breakage due to an action of elastic bending of the material, based solely on the intrinsic elasticity of the material, which can eventually cause mechanical stress and breakage. The opposite end of the oscillating side segment forming part of the locking mechanism 17 is in turn provided with a snap-fit end, which end comprises a tooth mounted on an elastically flexible arm 117, which arm 117 overlaps under tension at a coupling wall or rib 217 of the support 9, which is substantially parallel to said arm 117, said arm and said rib being generally provided with a coupling tooth 317 and a coupling seat 417 of said coupling tooth. In the closed condition, said tooth 317 and said seat 417 are tensioned into engagement by the spring force of said arm 117. In an easily accessible position, the end of the swinging side segment is provided with a stop tab 25 to exert a clamping force. decoupling of the oscillating segment from the support body. According to one embodiment, the hinge 24 is in one piece and is made of the same material as the support, and is a so-called film hinge, obtained from a thinning of the material between the lower oscillating segment and the remaining part of said lower side of the support. . As is evident, to ensure a better stability of the coupling of the oscillating segment to the support in correspondence with the locking mechanism, the end of the oscillating segment that carries the elastic arm 117 protrudes beyond said elastic arm, and in the lower part and is it overlaps laterally on both sides on the body of the support, that is, on the lower side of the coupling rib 217 with which the arm 117 cooperates.

In this way, the possible thrusts exerted in the direction of the axis of the cavity or window, which could give rise to a lateral bending of the oscillating segment of the lower side, are discharged on the walls that laterally overlap the support body, which holds said wobble side segment against lateral bending in the direction of the axis of said cavity.

According to a further feature, the swinging lower side segment is provided with a wedge shape 517 on its inward side of said cavity, for example, made of three angled walls and positioned so as to be tangent to a circumference or a curved line.

It is worth noting that the closed locking mechanism 17 confers greater mechanical rigidity to the support 9.

It is worth specifying that, in the first embodiment, said support 9 is in one piece with a resealable closure system.

In an alternative embodiment shown in Figure 5, said support 59 instead comprises two different parts made of two different materials. Said support 59 is substantially identical to said support 9, even dimensionally: the difference lies in the configuration of the cavity or window that houses the LED bar. In this case, said cavity or window is provided with a distinct wedge-shaped removable part, which can be fixed by press fit on a lower side of the support 59.

In this embodiment, said wedge is made of a metallic wire having a preset elasticity, and the locking mechanism 29 is made of the ends of said wedge. Basically, said locking mechanism 29 is provided with a double U shape

In particular, the wire of the locking mechanism 29 is conveniently bent to form two parallel U-shaped segments, where the ends of the corresponding U-arms are connected to each other, thus forming two coupling crosspieces, housed in two coupling seats 27 and 28, respectively. The two U-shaped segments are intended to house an LED bar 8. By exerting a slight pressure, said connecting crossbars of said two U-shaped segments are hooked to said support 59 through the seats 27, 28, thanks to the controlled deformation of the wire 29 itself, which must be compressed elastically to approach the terminal ends of two U-shaped segments, to cross the delimiting walls of the seats 27, 28 and return to its initial dimension once inserted in their seats . Therefore, to separate the wedge 29 from the support 59, a new elastic compression must be exerted, and the two upper ends of the two U-shaped segments must be approached, in order to emerge from the seats and extract said wedge.

On a wire shelf a support 59 without the locking mechanism 29 can be mounted to support the dividers 6 and the fronts 7, while said locking mechanism 29 can be added at a later stage, only when an LED bar has to be added 8.

Figure 6 shows a side view of the support 59 hooked to a stiffener 3 of a metal shelf 1. In this view, the C-shape of the hooking mechanism can be seen, said C comprising the upper extension 20, the vertical side 19 and the lower extension 21. In the extension 20 a slot 22 is provided, while in the extension 21 a slot 23 and an impact step 26 are provided. Figure 6 shows that said stiffener 3 sits in place against said step support 26, but maintains a distance from the side 19 of the support, so that the support 59 is provided with the necessary elasticity to allow easy snap-fitting/removal of said support 59 on the stiffener 3. It is evident that the support 9 functions in In the same way, too, the difference between support 9 and support 59 lies solely in the way said LED bar 8 is housed and supported by two different supports.

Finally, Figures 7 and 8 show a plurality of dividers 6, 86 and fronts 7, 87, normally produced by manufacturers and commonly used at points of sale. Comparing these two Figures, the variety of types and dimensions of dividers and fronts can be appreciated. All types of dividers and fronts shown in Figures 7 and 8 are mountable on wire shelves thanks to the use of supports 5, 59 according to the present invention, conveniently placed with respect to the shelf consisting of wires 2 and correspondingly to the coupling lower front extensions and dividers.

Figures 7 and 8 also show a metal sheet shelf 80 and a wire shelf 88 having a semicircular shape, which are generally used for the end parts of sales shelves.

It is worth specifying that even semicircular fronts 87, corresponding to a quarter of a circle, can be mounted by using the supports 9, 59 according to the present invention. In fact, the stiffener 83 of the semicircular shelf is provided with the same dimensions (height and thickness) as the stiffener 3 of the rectangular shelves, while the width of the supports 9, 59 is sufficiently small, with respect to the radius of the circumference of the semi-circular shelf 88, to allow the latching mechanism to work in the same way that it works on the rectangular shelf which has a linear stiffener.

The assembly method according to the present invention comprises the following steps:

a. Install a wire shelf 1 at the desired height on a shelf base;

b. Insert at least one pair of supports 9 or 59; mounting of bracket 9 or 59 occurs through a snap-fit mechanism by pressing the two extensions 20, 21 against the upper and lower ends of a stiffener 3, and seating impact step 26 in place against its own stiffener 3;

c. Optionally, insert the feet 12 of a divider 6 or of a front 7 inside said hole 14 of each support 9 or 59;

d. Optionally, insert an LED bar 8 inside the cavity 15, and fix it using the locking mechanism 17 or 29.

It is worth noting that stage d can be done at a later stage, after months or even years, when the shelves need to be illuminated by installing new 8 LED bars.

It will be noted that brackets 5, 59 can support splitters 6/fronts 7 and LED bars 8 completely independently: that is, each bracket 9, 59 can support one splitter 6/front 7 only, one LED bar 8 only, one splitter 6/front 7 and a LED bar 8 at the same time. Consequently, the steps c and d of the assembly method can be performed completely independently of each other, in the order c or in the order dc at later times, even very distant from each other.

It is worth noting that, in the case of the use of the two-piece bracket 59, said bracket 59 can initially be mounted without its removable locking mechanism 29, which can be mounted only at a later stage, when it is decided to add at least one LED bar 8 to wire shelf 1.

Said LED bar 8 can be removed by the support 9, 59 at any time, for example, when the shelf does not need lighting or because it is damaged. Advantageously, this does not require disassembly of the shelf itself.

1 wire shelf

2 metal wires

3 stiffener

4 metal wire above

5 metal wire back

6 divider

7 front

8 LED bar

9 support

10 sheet metal shelf

11.11A hole

12 foot

13 C-folded sheet metal

14 hole

15 cavity

16 upper side

17 locking mechanism

18 side

19 side

20 upper extension

21 lower extension

22 slot

23 slot

24 hinge

25 tab

26 impact step

27 seat

28 seat

29 removable locking system

59 support

80 semicircular sheet metal shelf

83 semicircular stiffener

86 semicircular divider

87 semicircular front

88 semicircular wire shelf

117 arm

217 coupling rib

317 coupling tooth

417 coupling seat

517 wedge

Claims (12)

i. Combination of a support (9, 59) with a shelf (1) made of a set of wires (2) connected to each other by transverse reinforcement stiffeners (3), which shelf comprises: - at least one front wall called front (7, 87) provided with at least one foot (12) and/or - at least one dividing wall called divider (6, 86) provided with at least one foot (12), where said support (9, 59) comprises a cavity (15) for housing and supporting an optional LED bar (8 ) and at least one elastic adjustment terminal and at least one coupling seat (14) characterized in that said terminal coupled to at least one stiffener (3) comprises: - a press fit C mechanism with an upper extension (20) and a lower extension (21), whose extensions are opposite and elastically stretchable and in their coupling condition can be tensioned on a stiffener (3), where said extensions (19, 20) surround the opposite edges of said stiffener (3); - a coupling seat in the form of a hole (14) open towards an upper side of said support to house the corresponding feet (12) of said dividers (6, 86) and fronts (7, 87). Combination according to claim 1, wherein the upper extension (20) and the lower extension (21) are connected at a preset distance by a vertical side (19) of the support itself; said extension (20) is provided with an upper slot (22), while said extension (21) is provided with a lower slot (23) and an impact step (26) to distance said stiffener (3) from said vertical side (19). 3. Combination according to claim 1 or 2, wherein said support is made in one piece, provided with a locking mechanism (17) to open and close a cavity or window (15) that houses said optional LED bar ( 8), whose mechanism comprises a segment of a perimeter side that delimits said cavity or window (15), which segment is oscillating thanks to a hinge (24) provided at one end and which is provided with a pressure adjustment terminal (117). , 317) in a matching part (217, 417) of the support (9). 4. Combination according to claim 1 or 2, wherein said support is produced in two different parts, the first part comprising the terminal to the stiffeners (3) of the shelf (1) and the coupling seat (14) of the fronts (7, 87) and dividers (6, 86), while the second piece is a removable wedge (29) for said optional LED bar (8), whose second piece can be attached by means of a locking mechanism to the seats of coupling (27, 28) provided on said support (59). Combination according to claim 4, wherein said wedge (29) is made of a wire shaped to form a double U and snaps elastically into two seats (27, 28) provided in said support (59). 6. Combination according to one or more of the preceding claims, wherein: - The width of said support is less than the light of two adjacent wires (2) of the set of parallel wires that form a support shelf (1); - The length of said support is less than the span between said stiffener (3) and the front (4) or rear (5) wire of a shelf (1); Combination according to one or more of the preceding claims, wherein said support is made of plastic material, preferably a transparent plastic material. 8. Assembly method of a combination according to claims 1 to 7 comprising the following steps: a. Install a wire shelf (1) on the desired shelf on a shelf scaffold; b. By exerting pressure, insert at least one pair of supports (9 or 59) into one shelf (1.88). 9. Method for assembling a combination according to claim 8, further comprising the following step: c. Said pair of supports (9, 59) that have been placed at a reciprocal distance corresponding to the distance of at least two feet (12) from a divider (6, 86) or from a front (7, 87), optionally inserting the feet (12) of a divider (6, 86) or of a front (7, 87) inside the hole (14) of each support (9, 59). 10. Method for assembling a combination according to claim 8 or 9, further comprising the following step: d. Optionally open the cavity (15) that houses an LED bar (8) of at least said two supports (9, 59), insert an LED bar (8) inside said cavity (15) and fix it by closing said cavity (15). ) through said locking mechanism (17, 29). 11. Method for assembling a combination according to claim 8, wherein the adjustment of said support (9, 59) occurs through a snap-fit mechanism by pressing said two extensions (20, 21) against the upper and lower ends of a stiffener (3), and bringing said impact step (26) into contact against said stiffener (3). 12. Method for assembling a combination according to claim 10, wherein said support (59) is assembled without its wedge (29) that supports said LED bar (8) to support only dividers (6, 86) or fronts (7 , 87), while said wedge is mounted only at a later stage, thanks to the locking mechanism that allows fixing said LED bar (8) between said wedge and its coupling seats (27, 28) to the support (59).