FR3134835A1 - Device for fixing a handle - Google Patents

Abstract

Title: Device for fixing a handle Device for fixing a handle to an opening in the wall of an opening, the device comprising a body having a first bearing surface, a hooking element having a second surface support, the hooking element passing through the opening, the hooking element being secured to the body via a screw-nut system, so that the screwing of the screw-nut system allows the device to pass from an unlocked configuration to a locked configuration, distinct from the unlocked configuration, locked configuration in which the first bearing surface and the second bearing surface grip the wall in a first direction. Figure for abstract: Fig.1

Description

Device for fixing a handle

The present invention relates to the field of closure systems. It finds a particularly advantageous application in the field of door handles.

STATE OF THE ART

There are many systems for attaching a handle to an opening.

In order to allow the rapid attachment of a handle to an opening, handles comprising bases are generally used. These bases ensure effective fixing by flat support against the door wall. However, these bases do not offer guarantees in terms of security because they can be easily forced. In addition, for aesthetic purposes, these handles with bases do not always provide the desired result. It is therefore necessary to also be able to supply handles without base.

To do this, solutions such as document EP3203000B1 are known from the state of the art in which a system for fixing a rotary handle to a sash opening is disclosed. In this technical solution, the fixing system comprises a main part, presenting a hooking element capable of being able to be secured at the level of a wall opening. This technical solution allows the attachment of a handle without a base.

However, this solution has many limitations such as, for example, it does not allow easy adaptation to different wall thicknesses and therefore the cooperation between this solution and different opening walls is not optimal.

An object of the present invention is therefore to improve the cooperation between a handle fixing system without a base and an opening wall.

The other objects, characteristics and advantages of the present invention will appear on examination of the following description and the accompanying drawings. It is understood that other benefits may be incorporated.

SUMMARY

• un corps présentant une première surface d’appui,
• un élément d’accroche présentant une deuxième surface d’appui, l’élément d’accroche traversant l’ouverture.

To achieve this objective and according to one embodiment, a device is provided for fixing a handle to a wall opening of an opening, the device comprising:

• a body having a first support surface,
• a hooking element having a second bearing surface, the hooking element passing through the opening.

The attachment element being secured to the body via a screw-nut system, so that screwing the screw-nut system allows the device to move from an unlocked configuration to a locked configuration, distinct from the unlocked configuration, locked configuration in which the first bearing surface and the second bearing surface grip the wall in a first direction.

Preferably the first direction is perpendicular to at least one of the first surface and the second surface.

Thus, the tightening of the hooking element is adjustable when mounting the handle by screwing in the screw-nut system. In fact, it is possible to vary the position of the attachment element in height relative to the body of the fixing system. We thus have a vice grip on the wall on which the fixing device is fixed. In addition, by having sufficient projection in the helical slide formed by screwing, we have a good latitude of adaptation to the type of walls, in particular according to their thickness.

Without the present invention, it would necessarily be necessary to replace the entire assembly of the device according to each opening thickness, which would inevitably increase production costs.

Another aspect concerns an assembly comprising a wall on which the device is mounted.

• positionnement de la première surface d’appui au contact d’une première face de la paroi,
• positionnement de l’élément d’accroche au travers de l’ouverture de sorte que la deuxième face d’appui soit au contact d’une deuxième face de la paroi, la deuxième face étant distincte de la première face,
• solidarisation de l’élément d’accroche au corps par l’intermédiaire d’une liaison vis-écrou, de sorte que, dans une configuration de verrouillage, la première surface d’appui et la deuxième surface d'appui se rapprochent l’une de l’autre jusqu’à venir prendre en étau la paroi selon une première direction.

Another aspect relates to a method of fixing a handle to a wall opening of an opening using a device comprising a body having a first bearing surface and a hooking element having a second surface. support, the process comprising the following steps:

• positioning of the first support surface in contact with a first face of the wall,
• positioning the hooking element through the opening so that the second support face is in contact with a second face of the wall, the second face being distinct from the first face,
• securing the attachment element to the body via a screw-nut connection, so that, in a locking configuration, the first bearing surface and the second bearing surface approach each other on the other until it grips the wall in a first direction.

BRIEF DESCRIPTION OF THE FIGURES

The aims, objects, as well as the characteristics and advantages of the invention will emerge better from the detailed description of an embodiment of the latter which is illustrated by the following accompanying drawings in which:

There represents a handle mounted on an example of a device according to the present invention.

There represents an exploded view in which a square and a handle are represented as well as an example of a device according to the present invention.

Figures 2A to 2B represent an example of a device in which hooking elements are mounted on a body via screws.

There represents an example of a support tray under which balls mounted on springs are positioned.

There represents an example of mounting the support tray on the body according to the present invention.

There represents a low-angle view of an example of a device according to the present invention.

Figures 4A and 4B represent sectional views along a plane perpendicular to the first face of the wall, of an example of a device according to the present invention, the device being in an unlocked configuration in the and in a locked configuration on the wall in the .

There represents an example of a tightening step using a tool on a device according to the present invention.

Figures 5A and 5B represent, in a sectional view, examples of positioning of attachment elements of different dimensions adapted to different wall thicknesses.

The drawings are given as examples and are not limiting to the invention. They constitute schematic representations of principle intended to facilitate the understanding of the invention and are not necessarily on the scale of practical applications.

DETAILED DESCRIPTION

Before beginning a detailed review of embodiments of the invention, the following are set out as optional characteristics which may possibly be used in combination or alternatively:

According to one example, the body comprises a first angled surface and the gripping element comprises a second angled surface, the two angled surfaces being configured so that in the locking configuration, the first angled surface and the second slanted surface are in planar contact with each other so as to allow transmission of load pickups both in the first direction and radially to the first direction X.

According to one example, the second slanted surface extends along a plane forming an angle with the second support surface of between 30° and 60°, preferably substantially equal to 45°.

According to one example, the hooking element is configured to completely pass through the opening, the opening being delimited along an opening surface and extending through the wall along a central axis, parallel to the first direction. Preferably, the opening is a circular opening. Preferably the opening is accompanied by at least one centering opening. Preferably two centering openings, which can be distributed symmetrically around the circular opening.

According to one example, the hooking element has a connecting face configured so as to exert pressure on the opening surface in a locking configuration.

According to one example, the device comprises at least two hooking elements, preferably exactly two hooking elements distributed symmetrically around the central axis.

According to one example, at least two attachment elements are distributed symmetrically or equiradially relative to the central axis.

According to a particular embodiment, the device comprises at least three attachment elements distributed equiradially around the central axis.

According to one example, the body and the hooking element respectively comprise a first tapping and a second tapping, the first tapping and the second tapping having the same diameter and are both configured so as to cooperate with a threaded element in order to allow securing the body with the hooking element.

According to one example, the threaded element comprises a clamping interface, the clamping interface being accessible from the space oriented towards the first face.

According to one example, the hooking element comprises a connecting surface extending between the second bearing surface and the second oblique surface, the device being configured so that in a locking configuration, the threaded element s 'rests on a radial support surface.

By “wall” we mean an amount or a leaf which can allow access or closure of access, it is not necessarily a hinged door, it can also be a sliding door wall, such as for example a bay window.

In the remainder of the description, the term “on” does not necessarily mean “directly on”. Thus, when we indicate that a part or an organ A is supported “on” a part or an organ B, this does not mean that the parts or organs A and B are necessarily in direct contact with the other. These parts or organs A and B can either be in direct contact or be supported on one another via one or more other parts. It is the same for other expressions such as for example the expression “A acts on B” which can mean “A acts directly on B” or “A acts on B through one or more other parts ".

Furthermore, when two pieces “A” and “B” hold a piece “C”, this does not necessarily mean that there would not be an additional piece inserted between “A” and “C” and/or between “B” and “C”.

In the context of this patent application, the expression “kinematically interposed between” does not necessarily mean not in “contact with”. Thus, if a part A is kinematically inserted between a part B and a part C, this does not mean that A and B are necessarily in direct contact or that A and C are necessarily in direct contact. This means that a movement or an effort from part B, respectively from part C, can be at least partly transmitted to part C, respectively to part B, via part A.

In the present patent application, the term mobile corresponds to a rotational movement or a translational movement or even to a combination of movements, for example the combination of a rotation and a translation.

• positionnées à distances l’une de l’autre, et/ou
• mobiles l’une par rapport à l’autre et/ou
• solidaires l’une de l’autre en étant fixées par des éléments rapportés, cette fixation étant démontable ou non.

In the present patent application, when it is indicated that two parts are distinct, this means that these parts are separate. They are :

• positioned at distances from each other, and/or
• mobile relative to each other and/or
• secured to each other by being fixed by attached elements, this fixing being removable or not.

A one-piece unitary part cannot therefore be made up of two separate parts.

In the present patent application, the term "integral" used to describe the connection between two parts means that the two parts are linked/fixed relative to each other, according to all degrees of freedom, unless it is explicitly specified differently. For example, if it is indicated that two parts are united in translation in a direction piece in direction X, the other piece performs the same movement.

In the present patent application, an elastic means or element can for example be a spring, such as a helical coil spring, elastic washers such as Belleville washers, an elastomer, a rubber.

In the detailed description which follows, use may be made of terms such as “horizontal”, “vertical”, “longitudinal”, “transverse”, “upper”, “lower”, “top”, “bottom”, “front », “rear”, “inside”, “outside”. These terms should be interpreted relatively in relation to the position of the entire device worn by the swimmer and in a configuration in which the swimmer is standing on land or underwater.

According to a preferred embodiment of the present invention, the fixing device 1 allows the fixing of a handle 3 on an opening. Preferably the opening has a wall 21 having an opening 211. The device 1 comprises a body 11 having a first bearing surface 11a adapted to be preferably in plane contact with a first face 21a of the wall 21 of the opening 2.

The device 1 also comprises at least one hooking element 12. The hooking element 12 having a second bearing surface 12a capable of being positioned preferably in plane contact with a second face 21b of the wall 21. L the hooking element 12 being configured so as to pass through at least partially the opening 211 and preferably entirely. The second face 21b preferably being an opposite face parallel to the first face 21a.

To the and according to one example, there is shown a handle 3 fixed to a wall 21 thanks to the fixing device 1. The handle 3 advantageously comprises a follower (not shown) configured so as to allow the penetration of a lock square 4. The handle 3 which may include an orifice 3a configured to allow the passage of a transverse element.

COOPERATION BY BIAS SURFACES

As illustrated in Figures 4A and 4B and according to a particular embodiment, the body 11 comprises a first slanted surface 11b and the hooking element 12 comprises a second slanted surface 12b. The two slanted surfaces 11b, 12b are preferably configured so that when screwing the screw-nut system, the first slanted surface 11b and the second slanted surface 12b come closer to each other until they allow a plane contact of the two surfaces. Thus, once contact has been made between the two surfaces at an angle, this allows transmission of the load loads both in the first direction X ₂₁₁ and in a direction perpendicular to the first direction X ₂₁₁ , preferably in a radial direction at the first direction X ₂₁₁ .

• une première phase d’amenée dans laquelle la deuxième surface en biais 12b est sensiblement parallèle à la première face 21a,
• une deuxième phase de serrage dans laquelle la deuxième surface en biais 12b bascule grâce au serrage de l’élément fileté 13 de sorte que la dace de liaison 12c soit sensiblement parallèle au premier axe X₂₁₁.

As illustrated in and according to one example, the assembly of a hooking element 12 can be carried out in two phases:

• a first feed phase in which the second slanted surface 12b is substantially parallel to the first face 21a,
• a second tightening phase in which the second inclined surface 12b tilts thanks to the tightening of the threaded element 13 so that the connecting dace 12c is substantially parallel to the first axis X ₂₁₁ .

In other words, during the tightening phase of the threaded element 13, the first slanted surface 11b and the second slanted surface 12b are in contact with each other. Thus, this allows the hooking element to be straightened as illustrated in the example of the .

According to one example, the second slanted surface 12b extends along a plane forming an angle with the second support surface 12a of between 30° and 60°, preferably between 40° and 50° and preferably substantially equal to 45°. °.

Advantageously, the slanted surfaces 11b, 12b allow better centering of the device 1 and better resistance over time, relative to the opening 211.

LOCK CONFIGURATION

As illustrated in , the hooking element 12 is secured to the body 11 via a screw-nut connection, so that, in a locking configuration, the first bearing surface 11a and the second bearing surface 12a approach each other until they grip the wall 21 in a first direction X ₂₁₁ . Preferably the first direction X ₂₁₁ is perpendicular to at least one of the first surface 21a and the second surface 21b.

VICE GRIP

Advantageously, the hooking element 12 is configured to completely pass through the opening 211.

According to a particular embodiment, the hooking element 12 preferably has a curved portion. Preferably the second support face 12a is located on a curved portion of the hooking element 12. Thus, the hooking element is configured so as to extend on each side of the wall 21. In fact, the cooperation of the hooking element 12 with the body 11 takes place on the side of the first face 21a and the cooperation between the hooking element 12 and the wall 21 takes place on the side of the second face 21b.

OPENING

In order to be able to mount the fixing device 1 on the wall 21, it is necessary for the wall 21 to have an opening 211. The opening 211 extending through the wall 21 along a central axis A _211. The opening 211 being radially delimited along an opening surface 211a. The central axis A ₂₁₁ being preferably parallel to the first direction X ₂₁₁ . Preferably, the opening 211 is a circular opening. Advantageously, the wall 21 is also crossed by two centering openings. Preferably, the two centering openings are distributed symmetrically around the opening 211. Advantageously the wall ₂₁ comprises a portion of constant thickness in the first direction in a direction normal to at least one of the first face 21a and the second face 21b.

According to one example, the body 11 comprises at least one centering pin configured to cooperate by fitting with at least one centering opening. Advantageously, the body 11 comprises two centering pins so as to allow rotation to stop along the axis A ₂₁₁ of the body 11 relative to the opening 211 in a locked configuration.

HANGING ELEMENT

As illustrated in Figures 2A and 2B and according to one example, the hooking element 12 preferably has a connecting face 12c configured so as to exert radial support on the opening surface 211a in a locking configuration. Thus, by radial support, the fixing of the device to the wall is optimized.

Preferably, the connecting face 12c has rough elements such as reliefs making it possible to grip the hooking element to the opening surface 211a in order to reinforce the attachment of the device to the wall.

According to a particular embodiment, the connecting face 12c is configured so as to be able to cooperate by friction with a threaded element 13 so as to stiffen the hooking element 12 and/or so as to reinforce the radial support of the connecting surface 12c on the opening surface 211a.

According to a particular embodiment, the device comprises at least two hooking elements 12. Preferably, the at least two hooking elements 12 are distributed symmetrically or equiradially relative to the central axis A ₂₁₁ .

According to a particular embodiment, the device comprises exactly two hooking elements 12 distributed equiradially around the central axis A ₂₁₁ .

Preferably, the attachment element 12 and the body 11 are two separate parts. In other words, the attachment element 12 is a removable element relative to the body 11.

SCREW-NUT COOPERATION

According to one example, the screw-nut system comprises at least one threaded element 13 configured to cooperate by screwing with at least one thread. The body 11 and the hooking element 12 can respectively comprise a first tapping 11t and a second tapping 12t. The first tapping 11t and the second tapping 12t can have the same diameter and can both cooperate with the threaded element 13 in order to allow the body 11 to be secured with the hooking element 12. Alternatively only one of the two among the body 11 and the hooking element 12 comprise a thread, the other comprising a simple bore. Preferably, only the hooking element 12 includes a tapping.

According to a particular embodiment, none of the parts among the body 11 and the hooking element 12 include tapping and the cooperation is carried out with an additional nut.

Alternatively, the hooking element 12 comprises a threaded rod so that the threaded element 13 and the hooking element 12 form a single piece, advantageously in one piece and made from the same material.

According to one example, the threaded element 13 comprises a clamping interface, the clamping interface being accessible from the space oriented towards the first face 21a. The clamping interface can be a screw head or a bolt head.

According to a particular embodiment, the hooking element 12 comprises a connecting surface 12c extending between the second support surface 12a and the second slanted surface 12b. Thus, the device 1 is configured so that in a locking configuration, the threaded element 13 rests on a connecting surface 12c so as to prevent the threaded element 13 from unscrewing.

APPLICATION

According to one embodiment, the invention concerns an assembly comprising a wall 21 on which a device 1 is mounted. The assembly may in particular be a door, a gate, a window or a bay window.

FIXING PROCESS

• positionnement de la première surface d’appui 11a au contact d’une première face 21a de la paroi 21
• positionnement de l’élément d’accroche au travers de l’ouverture de sorte que la deuxième face d’appui 12a soit au contact d’une deuxième face 21b de la paroi 21,
• solidarisation de l’élément d’accroche 12 au corps 11 par l’intermédiaire d’une liaison vis-écrou, de sorte que, dans une configuration de verrouillage, la première surface d’appui 11a et la deuxième surface d'appui 12a se rapprochent l’une de l’autre jusqu’à venir prendre en étau la paroi 21 selon une première direction X₂₁₁.

According to one embodiment, the device allows the fixing of a handle 3 on the opening 211 thanks to an assembly process which includes the steps below. These steps allow in particular the transition from an unlocked configuration to a locked configuration of the device:

• positioning of the first support surface 11a in contact with a first face 21a of the wall 21
• positioning of the hooking element through the opening so that the second support face 12a is in contact with a second face 21b of the wall 21,
• securing the attachment element 12 to the body 11 via a screw-nut connection, so that, in a locking configuration, the first bearing surface 11a and the second bearing surface 12a are move closer to each other until they grip the wall 21 in a first direction X ₂₁₁ .

According to one example, after securing the device 1 to the wall 21, the device is capable of allowing the passage of a square 4 then the assembly of a handle 3.

UNLOCKED CONFIGURATION

According to one example, the unlocked configuration corresponds to a state in which the wall 21 is not gripped between at least one hooking element 12 and the body 11. Advantageously, in the unlocked configuration, the device can be brought or removed from opening 211.

LOCKED CONFIGURATION

According to one example, the locked configuration corresponds to a state in which the wall 21 is gripped between at least one hooking element 12 and the body 11. Advantageously, in the unlocked configuration, the device 1 is fixed at least according to the main direction X ₂₁₁ . Preferably in the unlocked configuration, the device 1 can be inserted or detached from the opening 211 in the first direction X ₂₁₁ .

The first direction X ₂₁₁ being advantageously perpendicular to the first face 21a and/or to the second face 21b.

According to a particular embodiment, the device 1 comprises at least one access channel 13b configured to allow the passage of a tool 5, preferably a screwdriver, preferably in a direction parallel to _the main direction screw or alternatively unscrew the screw/nut system so as to allow the tightening and/or loosening of the device 1 on the wall 21.

DIFFERENT THICKNESSES

As illustrated in Figures 5A and 5B, the present invention makes it possible to adapt to different wall thicknesses e ₁ , e ₂ . Thus, the length dimension l ₁ , l ₂ of the hooking element 12 in the first direction X ₂₁₁ can be such that:

Preferably, it could be a wall thickness e1, e2 whose measurement extends between 1 mm and 5 mm, preferably 1.5 mm and 3 mm, preferably substantially equal to 2 mm.

According to an example illustrated in Figures 1B, 2A, 2B, 3A, 3B the device 1 can comprise a support ring 14 allowing the indexing of the handle 3 in several positions. This indexing can be done via at least one rolling element 15, preferably two rolling elements 15, advantageously balls. Preferably, the at least one rolling element 15 is mounted on an elastic element 16. Preferably, the elastic element 16 is a helical spring. Advantageously, the device 1 comprises two rolling elements distributed symmetrically relative to the axis A _211.

The support ring 14 may comprise a ring hole capable of aligning itself in the extension of the orifice 3a so that in a mounting configuration, the handle 3 can be secured with the support ring 14 by simultaneous penetration of the support element. passes through the ring hole and the orifice 3a.

According to a particular embodiment, the body 11 comprises a ring 17 configured to be inserted between the first face 21a and the first support surface 11a. Advantageously, it could be a ring 17 made of rubber or elastomer so as to reduce vibrations and/or to optimize contact and/or to reinforce the thermal seal at the level of the opening 211.

Advantageously, the handle 3 is a rotary handle.

As illustrated in Figures 4A and 4B and according to a particular embodiment, the mounting of the device 1 on the wall 21 is carried out as follows:

In a first phase, mounting of at least one hooking element 12 on a threaded element 13, preferably two hooking elements 12 on two threaded elements 13, preferably without complete screwing so as to allow retention of the hooking element 12 on the threaded element 13 while allowing tilting of the second support surface 12a towards the central axis A _211. Thus, the at least one hooking element 12 can pass through the opening 211.

In a second phase, bringing the device 1 close to the opening 211 so as to pass the hooking element 12 through the opening until the body 11 is in contact with the first face 21a.

In a third phase, using a tool 5 configured to cooperate with the clamping interface 13a, the threaded element 13 is screwed so as to allow the penetration of a threaded rod of the threaded element through 12t thread. The helical connection then drives the at least one hooking element 12 in translation until it grips the wall 21 with the body 11 or with the ring 17.

The invention is not limited to the embodiments previously described and extends to all the embodiments covered by the invention. The present invention is not limited to the examples previously described. Many other alternative embodiments are possible, for example by combining characteristics previously described, without departing from the scope of the invention. Furthermore, the features described in relation to one aspect of the invention may be combined with another aspect of the invention.

Numerical references:
1/ Fixing device
11/ body
11a/ first support surface
11b/ first slanted surface
11t / first tapping
12/ hanging element
12a/ second support surface
12b/ second slanted surface
12c / bond face
12t / second tapping
13 / threaded element
13b/ access channel
14/ support ring
15/ rolling element
16/ elastic element
17/ ring
2/ opening
21/ wall
21a/ first side
21b/ second side
211/ opening
211a/ opening surface
3/ handle
3a/ orifice
4/ square
5/ tool
X ₂₁₁ / first direction
A ₂₁₁ / central axis
l1/ first height
l2/ second height
e1/ first thickness
e2/ second thickness

Claims (12)

Device for fixing (1) a handle (3) to an opening (211) in the wall (21) of an opening (2), the device comprising:

• a body (11) having a first support surface (11a),
• a hooking element (12) having a second bearing surface (12a), the hooking element (12) passing through the opening (211),

characterized in that the hooking element (12) is secured to the body (11) via a screw-nut system, so that the screwing of the screw-nut system allows the device to pass from one unlocked configuration to a locked configuration, distinct from the unlocked configuration, locked configuration in which the first bearing surface (11a) and the second bearing surface (12a) grip the wall (21) in a first direction (X₂₁₁). Device (1) according to the preceding claim in which the body (11) comprises a first slanted surface (11b) and the hooking element (12) comprises a second slanted surface (12b), the two slanted surfaces ( 11b, 12b) being configured so that in the locking configuration, the first angled surface (11b) and the second angled surface (12b) are in planar contact with each other so as to allow transmission of loads taken up both in the first direction (X ₂₁₁ ) and radially to the first direction (X ₂₁₁ ). Device (1) according to the preceding claim in which the second slanted surface (12b) extends along a plane forming an angle with the second bearing surface (12a) of between 30° and 60°. Device (1) according to any one of the preceding claims in which the hooking element (12) is configured to pass entirely through the opening (211), the opening (211) being delimited along an opening surface (211a) and extending through the wall (21) along a central axis (A ₂₁₁ ), parallel to the first direction (X ₂₁₁ ). Device according to the preceding claim in which the hooking element (12) has a connecting face (12c) configured so as to exert pressure on the opening surface (211a) in a locking configuration. Device (1) according to any one of the preceding claims comprising at least two hooking elements (12). Device (1) according to the preceding claim in which the at least two hooking elements (12) are distributed symmetrically or equiradially relative to the central axis (A ₂₁₁ ). Device (1) according to any one of the preceding claims in which the body (11) and the hooking element (12) respectively comprise a first tapping (11t) and a second tapping (12t), the first tapping (11t ) and the second thread (12t) having the same diameter and are both configured so as to cooperate with a threaded element (13) in order to allow the body (11) to be secured to the hooking element (12). Device (1) according to the preceding claim in which the threaded element comprises a clamping interface (13a), the clamping interface (13a) being accessible from the space oriented on the side of a first face (21a) of the wall (21). Device (1) according to any one of the preceding claims in which the hooking element (12) comprises a connecting surface (12c) extending between the second bearing surface (12a) and the second oblique surface (12b) the device (1) being configured so that in a locking configuration, the threaded element (13) rests on a radial bearing surface (12c). Assembly comprising a wall (21) on which a device (1) according to any one of the preceding claims is mounted. Method for fixing a handle (3) to an opening (211) in the wall (21) of an opening (2) using a device comprising a body (11) having a first bearing surface ( 11a), a hooking element (12) having a second bearing surface (12a), the method being characterized in that it comprises the following steps:

• positioning of the first support surface (11a) in contact with a first face (21a) of the wall (21),
• positioning of the hooking element through the opening so that the second support face (12a) is in contact with a second face (21b) of the wall (21), the second face (21b) being distinct from the first face (21a),
• securing the hooking element (12) to the body (11) via a screw-nut connection, so that, in a locking configuration, the first bearing surface (11a) and the second support surface (12a) come closer to each other until they grip the wall (21) in a first direction (X ₂₁₁ ).