OA21866A - Device for fixing a cladding panel to a structure. - Google Patents

Abstract

The invention relates to a device (20) for fixing a cladding panel (12) comprising: - a crosspiece (22) comprising a hooking edge (30); - a hook (34) intended to be hooked to the crosspiece (22) by a first longitudinal approach movement towards the rear, then by a second hooking movement by vertical sliding downwards in a hooking direction; - means for locking the hook (34) against sliding in a release direction; characterized in that the locking means comprise a locking element (56) which is mounted movably on a body (36) of the hook (34) between a release position and a locking position towards which it is elastically returned.

Description

DEVICE FOR FIXING A CLADDING PANEL TO A STRUCTURE

Technical field of the invention

The invention relates to a device for fixing a vertical cladding panel, in particular a glass panel, to a structure, the fixing device comprising:

- a crosspiece intended to be fixed to the structure and comprising a hanging edge;

- a hook intended to be attached to the crosspiece by a first approach movement during which the hook is approached to the crosspiece, longitudinally towards the rear, above the edge, then by a second attachment movement by sliding vertically downwards in a attachment direction, the hook comprising means of attachment to a rear face of the panel;

- means for locking the hook in sliding upwards in a release direction when it is attached to the crosspiece.

Technical background

It is known to fix a transverse vertical cladding panel to a structure using a fixing device.

As is known, the fixing device comprises a support which is secured to the structure and a hook which is secured to the panel. The hook is hooked onto the support so as to position the panel on the structure.

To prevent the panels from coming loose, solutions are known by tightening the hook relative to the support, for example by inserting wedges using a hammer or by longitudinally tightening a notched plate against a vertical face of the hook.

These solutions are not satisfactory because they require sufficient tightening of the locking element against the hook. Without sufficient tightening, the panel risks coming loose. In addition, these solutions require the use of tools 5 on the back of the panel after its installation, often blindly, in very restricted accessibility conditions.

There is therefore a need to find a fixing solution that prevents a transverse vertical panel from coming loose from its fixing structure, and which is easy and quick to install.

Summary of the invention

The invention proposes a device for fixing a vertical cladding panel, in particular a glass panel, 15 comprising:

- a crosspiece with a hanging edge;

- a hook intended to be attached to the crosspiece by a first approach movement during which the hook is approached to the crosspiece, longitudinally towards the rear, 20 above the edge, then by a second attachment movement by sliding vertically downwards in a attachment direction, the hook comprising means of attachment on a rear face of the panel;

- means for locking the hook in sliding upwards in a release direction when it is attached to the crosspiece.

The fixing device according to the invention is characterized in that the locking means comprise a locking element which is mounted movably on a body of the hook between:

- a release position towards which it is pushed longitudinally backwards automatically by contact with the cross member during the approach movement;

- a locking position to which it is elastically returned forward and in which the locking element is intended to be engaged below a stop face of the crosspiece at the end of the hooking movement to prevent the hook from being unhooked.

According to another aspect of the fixing device of the invention, the locking element is pivotally mounted on the hook by means of an elastic return member, the locking element being clamped vertically against the stop face when the hook is mounted on the crosspiece.

According to another aspect of the fixing device of the invention, the elastic return member is formed by an asymmetrical wire spring comprising two legs of different lengths, each of which comprises an end for connection with the locking element and a free end mounted to pivot around a transverse pivot axis in the body of the hook, the pivot axes of each leg being distinct.

According to another aspect of the fixing device of the invention, the locking element is formed by the folded section of a spring wire, two end sections of which form the two legs of the elastic return member.

According to another aspect of the fixing device of the invention, the elastic return element comprises a pusher which is accessible to the finger of a user when the hook is attached to the crosspiece and which allows, by lever effect, to manually control the locking element towards its release position against the elastic return force.

According to another aspect of the fixing device of the invention, the pusher is formed by a section of the spring wire constituting the locking element.

According to another aspect of the fixing device of the invention, the means for fixing the hook to the panel comprise a contact flange with the panel which is linked to the body of the hook with an angular movement around a longitudinal axis.

According to another aspect of the fixing device of the invention, the flange is mounted in the body of the hook by means of a cylindrical spacer with a longitudinal axis pivotally received in an orifice of the hook, a pin being fixed across the spacer through a light in the body opening transversely into the orifice, two opposite edges of the light defining travel stops by contact with the pin when the flange pivots.

According to another aspect of the fixing device of the invention, it comprises a rider for immobilizing the hook transversely relative to the crosspiece, the rider being intended to be fixed at least transversely on the crosspiece.

The invention also proposes an assembly comprising a cladding panel, and at least one fixing device produced according to the teachings of the invention which comprises at least two hooks which are arranged along an upper edge of the panel, against a rear face of the panel, the two hooks being intended to be attached to the same crosspiece.

According to another aspect of the assembly produced according to the teachings of the invention, only one of the hooks of the fixing device comprises a rider to immobilize the hook transversely relative to the crosspiece, the other of said hooks being configured to be hooked to the associated crosspiece free to slide in a transverse direction.

Brief description of the figures

Other characteristics and advantages of the invention will appear during the reading of the detailed description which follows for the understanding of which reference will be made to the appended drawings which are briefly described below.

Figure 1 is a perspective view of a structure on which cladding panels are fixed by means of fixing devices produced according to the teachings of the invention.

Figure 2 is a perspective view of the rear of a cladding panel which is provided with two upper hooks made according to the teachings of the invention.

Figure 3 is a side view which represents a hook of the fixing device produced according to the teachings of the invention located at a distance from a crosspiece of said fixing device.

Figure 4 is a view similar to that of Figure 1 which only represents the structure equipped with several crosspieces identical to that of Figure 3.

Figure 5 is a view similar to that of Figure 3 which shows the hook in a position attached to the cross member.

Figure 6 is a perspective view showing the front of the hook of Figures 3 and 5.

Figure 7 is a perspective view showing the rear of the hook of Figure 6.

Figure 8 is a view similar to those of Figures 3 and 5 which shows the hook in an approximate position in abutment against the crosspiece.

Figure 9 is an exploded side view showing the means of attaching the hook to the panel.

Figure 10 is a perspective view showing the hook in the hooked position on the crosspiece, and a first embodiment of a rider intended to immobilize the transverse sliding of the hook in the crosspiece.

Figure 11 is a view similar to Figure 10 in which the rider is positioned on the hook.

Figure 12 is a perspective view showing the hook in the hooked position on the crosspiece, and a second embodiment of a rider intended to immobilize the transverse sliding of the hook in the crosspiece.

Figure 13 is a view similar to that of Figure 12 in which the rider is positioned on the hook.

Detailed description of the invention

In the remainder of the description, elements having an identical structure or similar functions will be designated by the same reference.

In the remainder of the description, a longitudinal orientation L will be adopted, directed orthogonally to the plane of the panel, from the rear to the front, a vertical orientation V directed from top to bottom and a transverse orientation T directed from left to right.

The vertical orientation V is here directed globally according to the direction of Earth's gravity.

Figure 1 shows a vertical structure 10 on which cladding panels 12 are fixed.

The vertical structure 10 is here formed of vertical uprights 14 which are arranged parallel to each other at a distance from each other in a transverse direction. The uprights 14 are for example fixed to a wall such as a facade of a building or an exterior wall. The uprights can be fixed either in contact with the wall or at a distance from the wall.

Alternatively, the structure is formed directly by a wall such as a facade or an exterior wall.

As shown in Figures 2 and 3, each cladding panel 12 here has a rectangular shape. These are, for example, glass panels. The glass panel may optionally integrate photovoltaic cells to form a solar panel. Each cladding panel 12 extends in a vertical transverse plane. Each cladding panel 12 is delimited longitudinally by a rear face 16, facing the structure 10 and a front face 18 opposite the rear face 16. These are large cladding panels 12, for example more than 1 m high. Such cladding panels 12 also have a very significant weight, for example of the order of 300 kg.

Each cladding panel 12 is fixed to the structure 10 by means of at least one fixing device 20.

As shown in Figure 4, such a fixing device 20 comprises a crosspiece 22 intended to be fixed to the structure 10. The crosspiece 22 extends along a main transverse axis perpendicular to the uprights 14. The crosspiece 22 is fixed to at least two uprights 14 by two free end sections so as to extend transversely between the two uprights 14.

Due to the presence of these uprights 14, it is possible to interpose a layer of insulating material (not shown) between the crosspieces 22 and the wall to which the uprights 14 are fixed.

Alternatively, when the structure is formed by a wall, the crosspieces 22 are fixed directly in contact with the wall.

The crosspieces 22 are here arranged by vertical columns. When it is desired that all the cladding panels 12 be aligned transversely, the crosspieces 22 of two adjacent columns are aligned transversely. When, on the contrary, it is desired to arrange the panels in a staggered pattern, the crosspieces 22 of one column are offset vertically relative to the crosspieces 22 of the adjacent columns.

The crosspiece 22 is in the form of a profile whose section is shown in detail in Figures 3 and 5. The crosspiece 22 thus has a sole 24 in the form of a vertical plate. The sole 24 has a rear face which is intended to be pressed against the structure 10, here formed of the uprights 14 to allow its fixing, for example by screwing.

The cross-section of the crosspiece 22 also comprises a web 26 which extends longitudinally projecting relative to a front face of the sole 24. A flange 28 extends vertically upwards from a front end edge of the web 26. The flange 28 is delimited upwards by a free end edge 30. The free end edge 30 will hereinafter be called the attachment edge 30.

The wing 28, the core 26 and the sole 24 delimit a groove 32 open upwards.

The fixing device 20 comprises at least one hook 34. The fixing device 20 here comprises two hooks 34 which are arranged at two upper corners of the rear face 16 of the panel 12, as shown in FIG. 2. The two hooks 34 being identical, only one of these hooks 34 will be described subsequently.

As shown in Figures 6 and 7, the hook 34 comprises a body 36 which extends in a main vertical direction. The body 36 has a front face 38 which is intended to be arranged opposite the rear face 16 of the panel 12, as illustrated in Figure 5. The body 36 also has a transverse vertical rear face 40. The body 36 has at its upper end an arm 41 which extends longitudinally at right angles towards the rear. A wing 42 extends vertically downwards from a rear end of the arm 41. A front face 44 of the wing 42 is arranged opposite the rear face 40 of the body 36. The wing 42, the body 36 and the arm 41 thus delimit the interior of the hook 34.

A free lower end of the wing 42 is located above the level of the lower end of the body 36 such that a lower portion of the rear face 40 of the body projects vertically downward relative to the wing 42.

The hook 34 is thus intended to be hooked to the crosspiece 22 by a first approach movement during which the hook 34 is approached to the crosspiece 22 by translation in a longitudinal approach direction directed towards the rear, passing from the position shown in FIG. 3 to the position shown in FIG. 8. During this approach movement, the lower end of the wing 42 passes above the hooking edge 30 of the crosspiece 22 until the wing 42 is arranged in line with the groove 32. In this position, the lower part of the rear face 40 of the body 36 is in abutment against the front face of the wing 28 of the crosspiece 22. Then in a second hooking movement, the hook 34 is slid vertically downwards in a hooking direction so that the wing 42 of the hook 34 is received in the groove 32, passing from the position shown in FIG. 8 to the position indicated in Figure 5. The hooking movement continues until the arm 41 is supported on the hooking edge 30 of the crosspiece 22 to suspend the panel 12. The hooking movement is guided by the sliding contact between the rear face 40 of the body 36 and the front face of the wing 28 of the crosspiece 22.

Furthermore, to ensure that the hooking edge 30 is well received in the hook 34, between the wing 42 and the body 36, the wing 42 has at its lower end a section slightly curved towards the rear to form a guide ramp for the hooking edge 30. Similarly, the rear face 40 of the body 36 has a beveled lower end to guide the hooking edge 30 between the wing 42 and the body 36 of the hook 34.

The hook 34 also includes means of attachment to the rear face 16 of the panel 12.

As a non-limiting example shown in Figure 9, in the embodiment shown in the figures, the means for fixing the hook 34 comprise a flange 46 for contact with the rear face 16 of the panel 12. The flange 46 is here in the form of a disc with a longitudinal axis, a front face of which is fitted with a pad 48, for example made of elastomer material, to avoid damaging the glass panel 12.

Advantageously, but not necessarily, the flange 46 is mounted in the body 36 of the hook 34 with a clearance

angular around its longitudinal axis. This makes it possible in particular to compensate for a lack of verticality of the crosspiece 22 in order to guarantee that all the hooks 34 of the panel 12 are correctly attached to the crosspiece 22.

In the embodiment shown in Figures 7 and 9, the flange 46 is mounted in the body 36 of the hook 34 by means of a cylindrical spacer 50 with a longitudinal axis pivotally received around said axis in an orifice of complementary shape which opens into the front face 38 of the body 36. The spacer 50 here comprises a central rear end stud 51 to be inserted into the associated orifice of the body 36 to correctly position the spacer 50 in a longitudinal direction by abutment against a shoulder face of the orifice of the body 36. The body 36 comprises at least one lumen 52 which opens transversely into one of its vertical lateral edges. The lumen opens transversely into the orifice of the body 36. The lumen 52 has a vertically elongated oblong shape and vertically limited by two end edges, as is particularly visible in Figures 5 and 7.

A pin 54 is fixed across the spacer 50 so that the pin 54 projects through the associated slot 52 of the body 36. The pin 54 is thus pivotally secured to the cylinder about the longitudinal axis. The two vertical end edges of the slot define travel stops by contact with the pin 54 when the flange 46 pivots relative to the hook 34.

As shown in Figure 9, the hook 34 is here fixed to the panel by means of a screw 55 which is intended to be screwed into a central thread (not shown) of the spacer 50 which opens into the front face of the flange 46.

According to the teachings of the invention, the hook 34 comprises means for locking it against sliding upwards in a direction of unhooking when it is hooked to the crosspiece 22.

The locking means comprise a locking element 56 which is mounted movably on the body 36 of the hook between:

- a release position towards which it is pushed longitudinally backwards automatically by contact with the cross member 22 during the approach movement, as shown in Figure 8; and

- a locking position towards which it is elastically returned forwards and in which the locking element 56 is intended to be engaged below a stop face 58 of the crosspiece 22 at the end of the hooking movement to prevent the hook 34 from being unhooked, as shown in Figure 5.

To enable the locking element 56 to be automatically pushed towards its release position, the locking element 56 is arranged to project rearwardly relative to the rear face 40 of the body 36 when it occupies its locking position, as shown in FIG. 5.

More particularly, the stop face 58 is here formed by a lower face of the web 26 of the crosspiece 22.

The locking element 56 is preferably arranged at right angles 20 to the hook portion 34 which is supported on the hooking edge 30, when the hook 34 is mounted on the crosspiece 34.

The locking element 56 is here pivotally mounted on the body 36 of the hook 34 by means of an elastic return member 60 which makes it possible to provide the elastic return force towards its locking position. This elastic return member 60 also makes it possible to tighten the locking element 56 vertically against the stop face 58 when the hook 34 is mounted on the crosspiece 22.

The locking element 56 is more particularly mounted to pivot about a generally transverse pivot axis which is here located above the locking element 56. In its release position, the locking element 56 is arranged below the body 36 of the hook so as to free access of the edge 34 to the interior of the hook 34, and in the locking position, the locking element 56 is located in front of the body 36 of the hook 34, above its release position.

In the locking position, the locking element 56 is more particularly arranged in line with its pivot axis in such a way that a vertical force applied to the locking element 56 does not cause any movement of the latter.

As shown in Figures 6 and 7, the elastic return member 60 is here formed by an asymmetrical wire spring comprising two legs 60A, 60B of different lengths, each of which has an end 62A, 62B for connection with the locking element 56 and a free end 64A, 64B pivotally mounted around a transverse pivot axis B1, B2 fixed in the body 36 of the hook 34. The connecting ends 62A, 62B of the legs 60A, 60B are arranged substantially at the same height.

The free end 64A, 64B of the legs 60A, 60B is for example curved orthogonally to the leg towards the body 36 to be inserted into corresponding holes.

Each leg 60A, 60B extends here generally vertically when the locking element 56 occupies its locking position 20. The connecting ends 62A, 62B form lower ends of the legs 60A, 60B, while the free ends 64A, 64B are here upper ends of the legs 60A, 60B. The pivot axes B1, B2 of each leg 60A, 60B are distinct. They are here offset vertically due to the difference in length of the two legs 60A, 60B. The pivot axis of the grove element 56 is then located generally between the two axes B1, B2.

This shift of the pivot axes B1, B2 combined with the elasticity of the wire causes elastic bending of the legs 60A, 60B 30 when the locking element 56 is pushed towards its release position. The legs 60A, 60B are then returned to their vertical position by their own elasticity.

In a variant of the invention not shown, the elastic return member can also be produced by other means. The elastic return member is for example produced by a torsion spring or by an elastically flexible leaf spring.

The locking element 56 and the elastic return member 60 are advantageously made in a single piece.

In the example shown in the figures, the locking element 56 is here formed by the folded section of a spring wire, two end sections of which form the two legs 60A, 60B of the elastic return member 60. The locking element 56 is for example produced by folding the wire constituting each leg 60A, 60B towards the rear.

It may be advantageous in certain cases to be able to unhook the hook 34 in a simple manner, for example to be able to replace a defective panel 12. For this purpose, the elastic return element 56 also comprises a pusher 66 which is accessible to the finger of a user when the hook 34 is hooked to the crosspiece 22. This pusher 66 makes it possible, by lever effect, to manually control the locking element 56 towards its release position against the elastic return force.

To increase the leverage effect, the pusher 66 is here arranged below the locking element 56. The pusher 66 is more particularly carried by the locking element 56, as shown in Figures 5 and 7.

The pusher 66 is advantageously formed by a section of the spring wire constituting the locking element 56.

Thus, the elastic return member 60, the locking element 56 and the pusher 66 are here produced by bending the same spring wire. The spring wire comprises two end sections 30 forming the legs 60A, 60B. One section is then folded backwards at the base of the legs 60A, 60B to form the locking element 56. A section of wire located at the rear of the locking element 56 is curved forwards below the locking element 56 to form the pusher 66.

To mount the panel 12 on a structure 10, the crosspiece 22 is first fixed to the uprights 14, as shown in Figure 4.

Then at least two hooks 34 are mounted near each upper corner of the panel 12. These two hooks 34 are intended to be hung on the same crosspiece 22.

The panel 12 is here pierced with two holes. Each hook 34 is arranged so that its flange 46 is flat against the rear face 16 of the panel 12, the central thread being in coincidence with an associated hole in the panel 12. The screw 55 is then inserted into the thread passing through the hole. The head of the screw 55 is tightened against the front face 16 of the panel 12, preferably with the interposition of a washer 68 to allow the tightening forces to be distributed over the entire periphery of the hole, as shown in Figure 9. The two hooks 34 are thus fixed to the panel 12.

As shown in Figure 2, the lower corners of the panel 12 are here provided with hooks 70 which have the same structure as the hooks 34 previously described, except that they do not include means to prevent them from coming loose. These hooks 70 are intended to be attached to a crosspiece 22 identical to that of the fixing device previously described.

During attachment, the panel 12 is positioned parallel to the crosspieces 22, at a distance from the structure 10, as shown in Figure 3. Then the first approach movement is carried out in the approach direction until the rear face 40 of the body 36 of the hooks 34 is in contact with the front face of the wing 28 of the crosspiece 22, as shown in Figure 8. During this movement, a rear end of the locking element 56 abuts against the front face of the wing 28 of the crosspiece 22, which causes it to move backwards into its release position against the elastic return force of the elastic return member 60.

Then, during the hooking movement, the panel is 5 slid downwards in the hooking direction. The hooks 34 then hook onto the hooking edge 30 of the crosspiece 22, as shown in Figure 5. The hooks 34 then bear on the crosspiece 22 against the weight of the panel 12.

In doing so, the locking element 56 also slides downwards and when it reaches below the core 26, it is elastically returned to its locking position in which it is clamped against the stop face 58, below the core 26.

When a detaching force is applied to the panel, the locking element 56 abuts against the abutment face 58 to prevent the panel 12 from moving. The detaching force is transmitted to the body 36 of the hook 34 via the vertical legs 60A, 60B without causing movement of the locking element 56.

The lower hooks 70 are also attached to their crosspiece 22 in the same way and in the same movement of the panel 12. However, the lower hooks 70 are not supported on their crosspiece 22 to allow for vertical expansion play of the panel 22.

In this position, the panel 12 is still capable of sliding transversely in the groove 32 of the crosspiece 22.

To block this last degree of freedom of the panel 12, a rider 72 is provided which is intended to be arranged on one of the upper hooks 34. The rider 72 comprises two legs 74 30 connected by a transverse bridge 76. The two legs 74 are arranged transversely on either side of the hook 34, for example by vertically fitting downwards.

The rider 72 further comprises means for being immobilized at least transversely relative to the crosspiece 22.

According to a first embodiment of the staple 72 shown in Figures 10 and 11, the immobilization means are formed by a plate 78 which is fixed to the staple 72. The plate 78 is for example made in one piece with the staple 72. This plate 78 has a fixing orifice 80 which is intended to be arranged against a face of the crosspiece 22 when the staple 72 is fitted around the hook 34. The plate 78 is then fixed to the crosspiece by means of a screw (not shown) through the fixing orifice 80. This arrangement makes it possible to block the transverse movement of the panel 12. In addition, the plate 78 is designed to extend beyond the edge of the panel 12 in a transverse direction to allow it to be fixed by screwing after installation of the panel 12.

According to a second embodiment of the rider 72 shown in Figures 12 and 13, the immobilization means are pinching means. The rider 72 is then provided with two pairs of legs 74A, 74B on either side of the hook 34. Each pair comprises a front leg 74A and a rear leg 74B. The legs 74A, 74B of each pair are arranged longitudinally opposite each other and they are elastically returned towards each other in a longitudinal direction. Each leg 74A, 74B of a pair is provided with at least one spur 82 which is directed towards the other leg 74A, 74B of the pair.

When the rider 72 is fitted onto the hook 34, the rear leg 74B of each pair is received inside the groove 32, while the front leg 74A is received against the front face of the wing 28 of the crosspiece 22, outside the groove 32. The two legs 74A, 74B of each then grip the wing 28 of the crosspiece 22 so that their spurs 82 bite into the material constituting the crosspiece 22. The spurs 82 thus make it possible to fix the rider 72 to the crosspiece 22.

Claims (11)

1. Device (20) for fixing a vertical cladding panel (12), in particular a glass panel, comprising: - a crosspiece (22) comprising a hooking edge (30); - a hook (34) intended to be attached to the crosspiece (22) by a first approach movement during which the hook (34) is approached to the crosspiece, longitudinally towards the rear, above the edge (30), then by a second attachment movement by vertical sliding downwards in a attachment direction, the hook (34) comprising means of attachment on a rear face (16) of the panel (12); - means for locking the hook (34) in sliding upwards in a release direction when it is attached to the crosspiece (22); characterized in that the locking means comprise a locking element (56) which is mounted movably on a body (36) of the hook (34) between: - a release position towards which it is pushed longitudinally backwards automatically by contact with the cross member (22) during the approach movement; - a locking position towards which it is elastically returned forwards and in which the locking element (56) is intended to be engaged below a stop face (58) of the crosspiece (22) at the end of the hooking movement to prevent the hook (34) from being unhooked. 2. Fixing device (20) according to the preceding claim, characterized in that the locking element (56) is pivotally mounted on the hook (34) by means of an elastic return member (60), the locking element (56) being clamped vertically against the stop face (58) when the hook (34) is mounted on the crosspiece (22). 3. Fixing device (20) according to the preceding claim, characterized in that the elastic return member (60) is formed by an asymmetrical wire spring comprising two legs (60A, 60B) of different lengths, each of which comprises an end (62A, 62B) for connection with the locking element (56) and a free end (64A, 64B) pivotally mounted around a transverse pivot axis (B1, B2) in the body (36) of the hook (34), the pivot axes (B1, B2) of each leg (60A, 60B) being distinct. 4. Device (20) according to the preceding claim, characterized in that the locking element (56) is formed by the folded section of a spring wire, two end sections of which form the two legs (60A, 60B) of the elastic return member (60). 5. Device (20) according to any one of the preceding claims, characterized in that the elastic return element (56) comprises a pusher (66) which is accessible to the finger of a user when the hook (34) is attached to the crosspiece (22) and which allows, by lever effect, to manually control the locking element (56) towards its release position against the elastic return force. 6. Device (20) according to the preceding claim, taken in combination with claim 4, characterized in that the pusher (66) is formed by a section of the spring wire constituting the locking element (56). 7. Device (20) according to any one of the preceding claims, characterized in that the means for fixing the hook (34) on the panel (12) comprise a flange (46) for contact with the panel (12) which is linked to the body (36) of the hook with an angular movement around a longitudinal axis. 8. Device (20) according to the preceding claim, characterized in that the flange (46) is mounted in the body (36) of the hook (34) by means of a cylindrical spacer (50). I9 of longitudinal axis received pivotally in an orifice of the hook (34), a pin (54) being fixed across the spacer (50) through a light (52) of the body (36) opening transversely into the orifice, two opposite edges of the light (52) defining 5 travel stops by contact with the pin (54) during the pivoting of the flange (46). 9. Device (20) according to any one of the preceding claims, characterized in that it comprises a rider (72) for immobilizing the hook (34) transversely relative to the crosspiece (22), the rider (72) being intended to be fixed at least transversely on the crosspiece (22). 10. Assembly comprising a cladding panel (12), and at least one fixing device (20) produced according to any one of the preceding claims, which comprises at least two hooks (34) which are arranged along an upper edge of the panel (12), against a rear face (16) of the panel (12), the two hooks (34) being intended to be hooked to the same crosspiece (22). 11. Assembly according to the preceding claim taken in combination with claim 9, characterized in that only one of the hooks (34) of the fixing device (20) comprises a rider (72) for immobilizing the hook (34) transversely relative to the crosspiece (22), the other of said hooks (34) being configured to be hooked to the associated crosspiece (22) free to slide in a transverse direction.