FR3115843A1 - Fixing pin and fixing kit for exterior facing - Google Patents

Abstract

The invention relates to a retaining pin (30) for a fixing kit (1) suitable for fixing an exterior facing (3) to an external construction element of a building. The retaining pin (30) comprises a tubular body (31) configured to allow the insertion of a first end of a securing rod (9), the retaining pin (30) furthermore being able to be inserted by simple interlocking in an orifice provided in the external construction element of the building so as to hold the outer facing (3) on the external construction element by means of the securing rod (9). The invention also relates to a fixing kit (1) comprising such a retaining pin (30). Figure 3

Description

Fixing pin and fixing kit for exterior facing

Technical field of the invention

The present invention relates to a retaining pin for a fixing kit suitable for fixing an exterior facing to an external construction element of a building.

The invention also relates to a fixing kit comprising such a retaining pin.

State of the art

The development of a building with external insulation requires the addition of different elements, each with its own function. These elements may in particular comprise a structural part responsible for the mechanical strength, an insulating part contributing to the thermal resistance, and a facing part. Whether inside or outside the building, these different parts must be united.

It is known from the state of the art to use a threaded rod passing through these different elements, and anchored in the wall. In general, the insertion of the threaded rod is carried out following a drilling of the wall wall, followed by a primary fixing of the rod at the level of this one. The primary fixing of the rod at the level of the wall may in particular be carried out by the addition of a hardening material. This solution is satisfactory in that it allows each element to be fixed with the others to obtain a solid assembly.

However, the piercing of the insulation element generally causes a break in the insulation at the level of the through passage, leading to the creation of one or more thermal bridges, thereby weakening the general insulation of the building.

Moreover, during the assembly of the various elements, and in particular in the time interval necessary for the hardening of the hardening material, the various parts must be maintained in position. This can cause assembly difficulties for operators, and/or mobilization of construction equipment into position for the duration of assembly.

Object of the invention

The object of the present invention is to propose a solution which responds to all or part of the aforementioned problems.

This object can be achieved thanks to the implementation of a retaining pin for a fixing kit suitable for fixing an exterior facing on an external construction element of a building where the exterior facing comprises an external facing element and an insulation element intended to be positioned, after fixing, between the external facing element and the external construction element of the building, said retaining pin comprising a tubular body configured to allow the insertion of a first end a securing rod, the retaining pin also being able to be inserted by simple fitting into an orifice made in the external construction element of the building so as to maintain the external facing on the external construction element by the intermediary of the connecting rod.

The provisions described above make it possible to propose a retaining pin facilitating the connection of the exterior facing with the external construction element of the building by simple interlocking.

The retaining pin may also have one or more of the following characteristics, taken alone or in combination.

According to one embodiment, the retaining pin is made of a polymer material. In general, the material used may have a low creep rate in compression.

According to one embodiment, the retaining pin is produced by a plastic injection process.

According to one embodiment, the tubular body retains its tubular shape when the first end of the securing rod is inserted into the retaining pin, and when the retaining pin is inserted by simple fitting into the external construction element of the building.

According to one embodiment, the tubular body extends in a longitudinal direction and has on an outer surface of at least a fraction of the length of the tubular body, at least one transverse fin extending transversely to the longitudinal direction and capable to interact by friction with an inner wall of the orifice made in the outer construction element of the building.

According to one embodiment, the at least one transverse fin comprises a notch configured to allow the passage of a fluid on either side of said at least one transverse fin outside the tubular body of the retaining pin .

According to one embodiment, said fluid comprises air. In this way, the notch contributes to allowing the evacuation of any air present in the orifice provided in the external construction element of the building when the securing rod is inserted into said orifice. Advantageously, the evacuation of the air makes it possible to prevent the risk of overpressure during the assembly of the fixing kit.

According to one embodiment, said fluid comprises the adhesive intended to secure the securing rod with the external construction element of the building. In this case, the notch makes it possible to evacuate any excess adhesive used.

According to one embodiment, the tubular body of the retaining peg comprises an insertion end portion having a frustoconical shape configured to guide the passage of the securing rod in the tubular body of the retaining peg.

According to one embodiment, the frustoconical shape of the insertion end portion is configured to improve the shear strength of the outer facing with respect to the outer construction element.

According to one embodiment, an internal surface of the tubular body of the retaining pin comprises longitudinal grooves extending axially inside the tubular body, and defining between them internal channels.

According to one embodiment, the longitudinal grooves are configured to be at least partially crushed during the insertion of the securing rod inside the retaining pin so as to ensure tightening of the securing rod, while retaining an intact external ankle support conformation.

According to one embodiment, the support ankle comprises at least one passage channel configured to allow the passage of a fluid from the inside to the outside of the support ankle and vice versa.

According to one embodiment, the passage channel is formed in the tubular body at the level of the insertion end portion.

The object of the invention can also be achieved thanks to the implementation of a fixing kit suitable for fixing an exterior facing on an external construction element of a building where the exterior facing comprises a facing element exterior and an insulation element intended to be positioned, after fixing by means of said fixing kit, between the external facing element and the external construction element of the building, said fixing kit comprising:

• a retaining pin according to one of the embodiments described above, inserted by fitting into an orifice made in the external construction element of the building,
• a spacer comprising a main body of tubular shape extending in an axial direction, and a guide channel extending internally in the axial direction through the main body, the spacer being embedded in the insulation element of the facing outside, and
• a securing rod configured to be inserted into the guide channel and comprising a first end which is inserted axially into the tubular body of the retaining pin so as to mechanically link the exterior facing and the exterior construction element of the building.

The fixing kit is capable of adopting a first configuration in which the retaining pin cooperates by simple interlocking with the orifice made in the external construction element of the building, or a second configuration in which the securing rod is secured to the external construction element of the building by means of an adhesive.

According to one embodiment, the adhesive is a curable resin.

The arrangements previously described make it possible to offer a fixing kit facilitating the connection of the exterior facing with the external construction element of the building by means of the guide channel of the spacer.

The fixing kit may also have one or more of the following characteristics, taken alone or in combination.

According to one embodiment, the spacer has a geometry of revolution around the axial direction, in particular a cylindrical or frustoconical geometry.

According to one embodiment, the spacer is intended to pass through the thickness of the insulation element and comprises:

• a first end wall arranged at a first axial end of the main body and intended to face the external construction element of the building, and
• a second end wall arranged at a second axial end of the main body, opposite the first axial end, and intended to bear against the external facing element.

According to one embodiment, the guide channel opens towards the outside of the spacer at the level of the first end wall and at the level of the second end wall.

According to one embodiment, the spacer further comprises at least one transverse collar extending outside the main body transversely to the axial direction, at a location located between the first end wall and the second end wall. end, at least two external cavities being delimited, in combination with the main body, on either side of said at least one transverse collar.

The arrangements previously described make it possible to propose a spacer facilitating the joining of the external facing with the external construction element of the building by means of the guide channel and the breaking of the thermal bridge by conduction and convection by the intermediary of both the main body but also external cavities and at least one transverse flange. Synergistically, the presence of the spacer guide channel facilitates the drilling and the position of the drilling of the external construction element before fixing the external facing on the external construction element.

According to one embodiment, the spacer is made of a polymer material.

In general, the material used may have a low creep rate in compression.

According to one embodiment, the spacer is produced by a plastic injection process, or by extrusion.

According to one embodiment, the securing rod has a second end opposite the first end, threaded and on which a nut is screwed until it bears against the second end wall of the spacer or against the element of support, so as to support the insulation element on the external construction element of the building, the fixing kit being in the second configuration.

According to one embodiment, said at least one transverse flange extends in a plane substantially perpendicular to the axial direction.

According to one embodiment, said at least one transverse collar is of annular shape.

According to one embodiment, the number of transverse flanges is greater than or equal to 2, and in particular greater than or equal to 6.

According to one embodiment, the transverse flanges are offset from each other along the axial direction according to a constant pitch along the spacer.

According to one embodiment, the spacer comprises at least one longitudinal rib extending, outside the main body and in the axial direction, between the first end wall and the second end wall, said longitudinal rib providing a mechanical connection between the first end wall, the second end wall and the at least one transverse collar.

According to one embodiment, each intersection between a longitudinal rib, a transverse collar, the first end wall, or the second end wall can be reinforced, so as to avoid the generation of stress concentration zones, and to so as to increase the tightness of each external cavity.

According to one embodiment, the spacer comprises a plurality of longitudinal ribs angularly offset from each other around the axial direction.

Advantageously, the presence of at least one longitudinal rib makes it possible to increase the mechanical resistance of the spacer, in particular in terms of resistance to axial compression, to torsion, to bending.

According to one embodiment, the external cavities delimited by the first end wall, the second end wall, the at least one longitudinal rib, and the at least one transverse collar at least partially contain a thermal insulator.

According to one embodiment, the thermal insulator is air.

According to one embodiment, the thermal insulation is an insulating material belonging to the group comprising a mineral wool, a polymer, a cellulose fiber, a cement foam, wood wool, or equivalent.

According to one embodiment, the first end wall extends transversely to the axial direction and delimits a bearing surface intended to cooperate with a circular notch delimited by the insulation element.

According to one embodiment, the first end wall has an outer disc extending perpendicular to the axial direction, said disc being intended to bear axially against the circular notch of the insulation element so as to block axially the spacer after its axial insertion through the thickness of the insulation element.

According to one embodiment, the second end wall comprises at least one slot allowing the placement of a fixing member intended to ensure the fixing of the second end wall with the external facing element.

According to one embodiment, the fixing kit comprises at least one fixing member capable of fixing the second end wall of the spacer with the external facing element.

According to one embodiment, the fastening member comprises a screw or a rivet which is fixed on the external facing element, for example by means of an insert secured to the external facing element.

According to one embodiment, the fixing member comprises a support element, the second end wall of the spacer resting on said support element in the axial direction. For example, the support element may comprise a curved tongue, the second end wall of the spacer being configured to be inserted into the curved tongue, in particular by rotation through a quarter turn. Advantageously, the presence of the support element makes it possible to distribute the contact pressure when the second end wall of the spacer is fixed with the external facing element.

According to one embodiment, the second end wall of the spacer has the general shape of a cross and the support element has a groove into which the second end wall is inserted, in particular by rotation of a quarter turn. In this way, the spacer makes it possible to secure the insulation element with the facing element, via the support element.

Brief description of the drawings

Other aspects, objects, advantages and characteristics of the invention will appear better on reading the following detailed description of preferred embodiments thereof, given by way of non-limiting example, and made with reference to the appended drawings. on which ones :

There is a schematic side view of an exterior facing having 4 fixing kits according to a particular embodiment of the invention.

There is a schematic sectional view of a fixing kit according to a particular embodiment of the invention.

There is a schematic side view of a retaining pin according to a particular embodiment of the invention.

There is a schematic side view of a spacer according to a particular embodiment of the invention.

detailed description

In the figures and in the remainder of the description, the same references represent identical or similar elements. In addition, the various elements are not represented to scale so as to favor the clarity of the figures. Furthermore, the different embodiments and variants are not mutually exclusive and can be combined with each other.

As illustrated in Figures 1 and 2, the invention relates to a retaining pin 30 for fixing kit 1, and also relates to said fixing kit 1 suitable for fixing an external facing 3 on an external construction element of a building. The outer facing 3 comprises an outer facing element 5 and an insulation element 7 intended to be positioned, after fixing by means of said fixing kit 1, between the outer facing element 5 and the outer construction element. of the building.

The fixing kit 1 notably comprises a spacer 100 according to one of the embodiments detailed below, and a securing rod 9 configured to be inserted axially into a guide channel 107 of the spacer 100 and into an orifice arranged in the external construction element of the building, so as to mechanically link the exterior facing 3 and the external construction element of the building. There illustrates in particular an embodiment in which four fixing kits 1 are used to fix the exterior facing 3 to the external construction element of a building.

According to the non-limiting variants shown in Figures 1 and 2, the securing rod 9 comprises a first end provided with a retaining pin 30. In this case, the fixing kit 1 is able to adopt a first configuration in which the retaining pin 30 cooperates by simple interlocking with the orifice made in the external construction element of the building, and a second configuration in which the securing rod 9 is secured to the external construction element of the building by means of an adhesive. For example, the adhesive may be a curable resin. The securing rod 9 may also have a second end opposite the first end, threaded and onto which a nut 15 is screwed until it bears against the spacer 100 at the level of a second end wall 105, or against a support element 13, so as to support the insulation element 7 on the external construction element of the building, when the fixing kit 1 is in the second configuration.

According to one embodiment, the fixing kit 1 comprises at least one fixing member 11 capable of fixing the second end wall 105 of the spacer 100 with the outer facing element 5 . According to a first non-limiting variant represented on the , the second end wall 105 comprises at least one opening allowing the establishment of the fixing member 11 intended to ensure the fixing of the second end wall 105 with the external facing element 5 . The fixing member 11 may in particular comprise a screw or a rivet which is fixed on the outer facing element 5, for example by means of an insert integral with the outer facing element 5 . According to a second non-limiting variant represented on the , the fixing member 11 comprises a support element 13, the second end wall 105 of the spacer 100 resting on said support element 13 in the axial direction. Advantageously, the presence of the support element 13 makes it possible to distribute the contact pressure when the second end wall 105 of the spacer 100 is fixed with the outer facing element 5 . For example, the support element 13 may comprise a curved tongue 131, the second end wall 105 of the spacer 100 being configured to be inserted into the curved tongue 131, in particular by rotation of a quarter turn. According to a third variant, the second end wall 105 of the spacer 100 has the general shape of a cross and the support element 13 has a groove into which the second end wall 105 is inserted, in particular by quarter-turn rotation. In this way, the spacer 100 makes it possible to secure the insulation element 7 with the facing element 5, via the support element 13.

As indicated above, the invention also relates to a retaining pin 30, a particular embodiment of which is presented in the . According to this embodiment, the retaining peg 30 comprises a tubular body 31 extending in a longitudinal direction and having on an outer surface at least a fraction of the length of the tubular body 31. The tubular body 31 of the peg support 30 may comprise an insertion end portion 37 having a frustoconical shape configured to guide the passage of the securing rod 9 in the tubular body 31 of the support pin 30. In general, the tubular body 31 retains its tubular shape when the first end of the securing rod 9 is inserted into the retaining pin 30, and when the retaining pin 30 is inserted by simple fitting into the external construction element of the building. Advantageously, the tapered shape of the insertion end portion 37 is configured to improve the shear strength of the outer facing 3 with respect to the outer construction element. The tubular body 31 of the retaining pin 30 may also have an internal surface comprising longitudinal grooves 34 extending axially inside the tubular body 31, and defining between them internal channels 32. The longitudinal grooves 34 may then be configured to be at least partially crushed during the insertion of the securing rod 9 inside the tubular body 31 of the retaining pin 30 so as to ensure a clamping of the securing rod 9, while maintaining a external conformation of the retaining pin 30 intact.

According to one embodiment, the retaining pin 30 is made of a polymer material. In general, the material used may have a low creep rate in compression.

According to one embodiment, the retaining pin 30 is produced by a plastic injection process.

Advantageously, the retaining pin 30 may comprise at least one passage channel 39 configured to allow the passage of fluid from the inside to the outside of the retaining pin 30 and vice versa. For example, passage channel 39 is formed in tubular body 31 at insertion end portion 37.

The retaining pin 30 may also comprise at least one transverse fin 33 extending transversely to the longitudinal direction and capable of interacting by friction with an interior wall of the orifice formed in the external construction element of the building. Each transverse fin 33 may include a notch 35 configured to allow the passage of the adhesive on either side of said at least one transverse fin 33 outside the tubular body 31 of the retaining pin 30. The illustrates in particular an embodiment for which the retaining pin comprises six transverse fins 33 each comprising a notch 35 configured to allow the passage of fluid.

According to one embodiment, said fluid comprises air. In this way, the notch 35 contributes to allowing the evacuation of any air present in the orifice provided in the external construction element of the building when the securing rod 9 is inserted into said orifice. Advantageously, the evacuation of the air makes it possible to prevent the risk of overpressure during the assembly of the fixing kit 1.

According to one embodiment, said fluid comprises the adhesive intended to secure the securing rod 9 with the external construction element of the building. In this case, the notch 35 makes it possible to evacuate any excess adhesive used.

There illustrates an embodiment of the spacer 100 for fixing kit 1 suitable for fixing an external facing 3 on an external construction element of a building where the external facing 3 comprises an external facing element 5 and an element insulation 7 intended to be positioned, after fixing, between the external facing element 5 and the external construction element of the building, said spacer 100 being intended to pass through the thickness of the insulation element 7. By example, the spacer 100 can be made of a polymer material. In general, the material used may have a low creep rate in compression.

According to one embodiment, the spacer 100 is produced by a plastic injection process, or by extrusion.

According to a non-limiting variant, the spacer 100 has a geometry of revolution around an axial direction, in particular a cylindrical or frustoconical geometry. The spacer 100 comprises in particular a main body 101 of tubular shape extending in the axial direction, and a first end wall 103 arranged at a first axial end of the main body 101 and intended to be turned towards the construction element. exterior of the building. The first end wall 103 can in particular extend transversely to the axial direction and delimit a bearing surface intended to cooperate with a circular notch 115 delimited by the insulation element 7. For example, the first wall of end 103 may have an outer disc extending perpendicular to the axial direction, said disc being intended to bear axially against the circular notch 115 of the insulation element 7 so as to block the spacer 100 axially after its axial insertion through the thickness of the insulation element 7.

The spacer further comprises a second end wall 105 arranged at a second axial end of the main body 101, opposite the first axial end, and intended to bear against the outer facing element 5. A guide channel 107 extends internally in the axial direction through the main body 101 and opens outwards from the spacer 100 at the level of the first end wall 103 and at the level of the second end wall 105. The passage passing through the guide channel 107 allows in particular the insertion of the securing rod 9.

The spacer 100 further comprises at least one transverse collar 109 extending outside the main body 101 transversely to the axial direction, at a location located between the first end wall 103 and the second end wall 105 The number of transverse flanges 109 may be greater than or equal to 2, and in particular greater than or equal to 6. illustrates a variant in which the spacer 100 comprises six transverse collars 109.

According to one embodiment, the transverse flange(s) 109 extend in a plane substantially perpendicular to the axial direction. For example, the transverse flanges 109 can be offset from each other along the axial direction according to a constant pitch along the spacer 100.

According to a non-limiting variant represented on the , each transverse flange 109 is annular in shape.

In addition, at least two external cavities 111 are delimited, in combination with the main body 101, on either side of said at least one transverse collar 109.

According to a non-limiting variant, the spacer 100 comprises at least one longitudinal rib 113 extending, outside the main body 101 and in the axial direction, between the first end wall 103 and the second end wall 105. Said longitudinal rib 113 can therefore ensure a mechanical connection between the first end wall 103, the second end wall 105 and the at least one transverse flange 109. Advantageously, the presence of at least one rib longitudinal 113 increases the mechanical strength of the spacer 100, particularly in terms of resistance to axial compression, torsion, bending. Furthermore, and as shown in the , each intersection between a longitudinal rib 113, a transverse collar 109, the first end wall 103, or the second end wall 105 can be reinforced, so as to avoid the generation of stress concentration zones, and so to increase the tightness of each external cavity 111. The spacer 100 may comprise a plurality of longitudinal ribs 113 offset angularly from one another around the axial direction. In this case, the external cavities 111 can be delimited by the first end wall 103, the second end wall 105, the at least one longitudinal rib 113, and the at least one transverse collar 109. The mode of realization illustrated on the has in particular a spacer 100 comprising six transverse flanges 109, and four longitudinal ribs 113, delimiting with the first end wall 103 and the second end wall 105, twenty-eight external cavities 111.

According to one embodiment, the external cavities 111 at least partially contain a thermal insulator. According to one embodiment, the thermal insulator is air. According to one embodiment, the thermal insulation is an insulating material belonging to the group comprising a mineral wool, a polymer, a cellulose fiber, a cement foam, wood wool, or equivalent.

The provisions described above make it possible to propose a retaining pin 30 and a fixing kit 1 facilitating the attachment of the exterior facing 3 with the external construction element of the building by simple interlocking. Furthermore, the presence of the spacer 100 advantageously allows thermal bridge breaking by conduction and convection via both the main body 101 but also the external cavities 111 and the at least one transverse flange 109. synergistically, the presence of the guide channel 107 of the spacer 100 facilitates the drilling and the position of the drilling of the external construction element before fixing the external facing 3 on the external construction element.

Claims (17)

Holding pin (30) for fixing kit (1) suitable for fixing an exterior facing (3) to an external construction element of a building where the exterior facing (3) comprises a facing element (5) exterior and an insulation element (7) intended to be positioned, after fixing, between the exterior facing element (5) and the exterior construction element of the building, said retaining pin (30) comprising a tubular body ( 31) configured to allow the insertion of a first end of a securing rod (9), the retaining pin (30) also being able to be inserted by simple fitting into an orifice made in the construction element exterior of the building so as to maintain the exterior facing (3) on the exterior construction element by means of the securing rod (9). Holding pin (30) according to Claim 1, in which the tubular body (31) extends in a longitudinal direction and has on an outer surface of at least a fraction of the length of the tubular body (31), at least a transverse fin (33) extending transversely to the longitudinal direction and capable of interacting by friction with an interior wall of the orifice formed in the external construction element of the building. Holding pin (30) according to claim 2, in which the at least one transverse fin (33) comprises a notch (35) configured to allow the passage of a fluid on either side of the said at least one fin transverse (33) outside the tubular body (31) of the retaining pin (30). Holding peg (30) according to any one of claims 1 to 3, in which the tubular body (31) of the holding peg (30) comprises an insertion end portion (37) having a frustoconical shape configured to guide the passage of the securing rod (9) in the tubular body (31) of the retaining pin (30). Support pin (30) according to any one of claims 1 to 4, comprising at least one passage channel (39) configured to allow the passage of a fluid from the inside towards the outside of the support pin ( 30) and vice versa. Holding pin (30) according to Claims 4 and 5, in which the passage channel (39) is provided in the tubular body (31) at the level of the insertion end portion (37). Fixing kit (1) suitable for fixing an external facing (3) on an external construction element of a building where the external facing (3) comprises an external facing element (5) and an insulating element (7) intended to be positioned, after fixing by means of said fixing kit (1), between the external facing element (5) and the external construction element of the building, said fixing kit (1) comprising :

• a retaining pin (30) according to any one of claims 1 to 6, inserted by fitting into an orifice made in the external construction element of the building,
• a spacer (100) comprising a tubular-shaped main body (101) extending in an axial direction, and a guide channel (107) extending inwardly in the axial direction through the main body (101), the spacer being embedded in the insulation element of the outer facing (3), and
• a securing rod (9) configured to be inserted into the guide channel (107) and comprising a first end which is inserted axially into the tubular body (31) of the retaining pin (30) so as to mechanically link the external facing (3) and the external construction element of the building;

the fixing kit (1) being capable of adopting a first configuration in which the retaining pin (30) cooperates by simple interlocking with the orifice made in the external construction element of the building, or a second configuration in which the rod securing (9) is secured to the external construction element of the building by means of an adhesive. Fixing kit (1) according to Claim 7, in which the spacer (100) has a geometry of revolution around the axial direction, in particular a cylindrical or frustoconical geometry. Fixing kit (1) according to any one of claims 7 or 8, in which the spacer (100) is intended to pass through the thickness of the insulation element (7) and comprises:

• a first end wall (103) arranged at a first axial end of the main body (101) and intended to face the external construction element of the building,
• a second end wall (105) arranged at a second axial end of the main body (101), opposite the first axial end, and intended to bear against the external facing element (5),

the guide channel (107) opening towards the outside of the spacer (100) at the level of the first end wall (103) and at the level of the second end wall (105);
the spacer (100) further comprising at least one transverse flange (109) extending outside the main body (101) transversely to the axial direction, at a location between the first end wall (103) and the second end wall (105), at least two external cavities (111) being delimited, in combination with the main body (101), on either side of said at least one transverse collar (109). Fixing kit (1) according to claim 9, in which the securing rod (9) has a second end opposite the first end, threaded and onto which a nut (15) is screwed until it bears against the second wall end (105) of the spacer (100) so as to support the insulation element (7) on the external construction element of the building, the fixing kit (1) being in the second configuration. Fixing kit (1) according to any one of Claims 9 or 10, in which the said at least one transverse flange (109) extends in a plane substantially perpendicular to the axial direction. Fixing kit (1) according to any one of Claims 9 to 11, in which the number of transverse collars (109) is greater than or equal to 2, and in particular greater than or equal to 6. Fixing kit (1) according to any one of Claims 9 to 12, in which the spacer (100) comprises at least one longitudinal rib (113) extending, outside the main body (101) and following the axial direction, between the first end wall (103) and the second end wall (105), said longitudinal rib (113) ensuring a mechanical connection between the first end wall (103), the second wall of end (105) and the at least one transverse flange (109). Fixing kit (1) according to Claim 13, in which the spacer (100) comprises a plurality of longitudinal ribs (113) offset angularly from one another around the axial direction. Fixing kit (1) according to any one of claims 13 or 14, in which the external cavities (111) delimited by the first end wall (103), the second end wall (105), the at least one longitudinal rib (113), and the at least one transverse collar (109) at least partially contain a thermal insulator. Fixing kit (1) according to any one of Claims 9 to 15, in which the first end wall (103) extends transversely to the axial direction and delimits a bearing surface intended to cooperate with a circular notch (115) delimited by the insulation element (7). Fixing kit (1) according to any one of claims 9 to 16, comprising at least one fixing member (11) capable of fixing the second end wall (105) of the spacer (100) with the element facing (5) external.