EP4093239B1 - Assembly forming a cover for a cosmetic container comprising two elements and a means of de-solidarization - Google Patents

Description

Technical field of the invention

The present invention relates to an assembly forming a cap for a cosmetic product container comprising two elements and a separation means. It applies in particular to perfume bottles or to any type of container for cosmetic products.

Prior technique

It is common in the prior art to provide perfume bottles with a decorative cap which can for example cover or enclose a device for diffusing fluid (liquid, cream) by projection (under pressure or by manual mechanical pump for example). These caps are generally either irremovable, or the elements which constitute them are made in such a way that they are difficult to recycle. They are therefore discarded, with the consequences that one can imagine.

There are therefore many disadvantages to making the current caps from a design, manufacturing and above all ecological and economic point of view. The document FR3082405 discloses an assembly forming a cap for a cosmetic product container.

Presentation of the invention

The present invention aims to remedy these drawbacks with a totally innovative approach, particularly compact and easy to use, making it possible to design any type of cap, in numerous shapes and a multiplicity of materials.

• le premier élément comporte des pattes élastiquement déformables radialement pour l'assemblage / le désassemblage du second élément sur le premier élément, lesdites pattes coopérant, dans la position assemblée, avec des encoches ménagées à l'intérieur du second élément, et
• ledit ensemble comporte également un moyen complémentaire de désolidarisation mobile entre une première position extrême dans laquelle les pattes du premier élément sont en prise avec les encoches du second élément pour l'assemblage des premier et second éléments, et une seconde position extrême dans laquelle lesdites pattes se désengagent radialement desdits encoches pour le désassemblage des premier et second éléments.

To this end, according to a first aspect, the present invention relates to an assembly forming a cap for a cosmetic product container, said assembly having a longitudinal axis along which extend a first element intended to be mounted on the container and a second element detachably assembled around the first element, characterized in that:

• the first element comprises radially elastically deformable lugs for assembling/disassembling the second element on the first element, said lugs cooperating, in the assembled position, with notches arranged inside the second element, and
• said assembly also comprises complementary means for disconnection movable between a first extreme position in which the tabs of the first element engage with the notches of the second element for the assembly of the first and second elements, and a second extreme position in which said tabs disengage radially from said notches for the disassembly of the first and second elements.

The invention is implemented according to the embodiments and variants set out below, which are to be considered individually or according to any technically effective combination.

According to a first embodiment, the complementary means of separation is a member having magnetic properties adapted to move under the effect of a determined external magnetic field, said element having magnetic properties being axially movable between a first position of rest when placed out of the magnetic field and a second active position to disengage the tabs from the notches when placed in said magnetic field.

Preferably, the radially elastically deformable lugs respectively have end peripheral hooks adapted to penetrate into the notches of the second element, and the member having magnetic properties is a ring-shaped magnet arranged around central fingers integral with said lugs and having a conical outer surface, said fingers approaching said lugs radially in the direction of the longitudinal axis when the magnet passes from the rest position to the active position, thus causing the disengagement of the hooks from the notches.

Advantageously, the central fingers, the notches and the radially elastically deformable tabs are three in number and are distributed angularly in a regular manner.
According to a second embodiment, the complementary means of uncoupling is an axially movable tool exclusively inside the first element between a first rest position and a second active position to disengage the lugs from the notches.

According to a particular embodiment of the present invention, the elastically deformable tabs have radially respectively at their free ends peripheral hooks adapted to penetrate into the notches of the second element, the tabs being integral with a wall of the first element reducing in the direction of said lugs, and the axially movable tool is a rod provided at one working end with radial pushers, the axial displacement of the tool along the internal wall of the first element causing the radial separation of the lugs by the pushers and the disengagement of the hooks out of the notches. Advantageously, the first element comprises, along its internal wall, grooves for introducing and axially guiding the pushers of the tool in the direction of the hooks.

Preferably, the pushers, the notches and the radially elastically deformable lugs are three in number and are distributed angularly in a regular manner.

According to a third embodiment of the present invention, the first element comprises an internal thread and the complementary means of separation is a rod provided with an external thread, said rod being movable axially and in rotation along/around the axis inside the first element between a first rest position and a second active position in which the respective threads and are engaged to gradually disengage the lugs from the notches of the second element as the rod is screwed into the first element.

According to a complementary aspect, the rod is also provided with an enlarged end head intended to bear against a conical internal wall of the first element bearing the radially elastically deformable tabs, said tabs diverging radially exclusively under the effect of the action of the enlarged head on said internal wall as the rod is screwed into the first element. According to a particularly advantageous aspect of the present invention, the lugs move apart exclusively under the effect of the penetration into each other of the respective threads as the rod is screwed into the first element.

According to a preferred characteristic, the notches are blind housings. According to a variant embodiment, the notches are through holes.

Brief description of figures

• [Fig. 1] la figure 1 est une vue en perspective éclatée d'un premier mode de réalisation d'une coiffe de flacon de produits cosmétiques comportant un ensemble conforme à la présente invention dans une position désassemblée,
• [Fig. 2] la figure 2 est une vue de détail en perspective d'un premier élément de la figure 1,
• [Fig. 3] la figure 3 est une autre vue en perspective de détail plus complète du premier élément de la figure 1,
• [Fig. 4] la figure 4 est une vue de détail en perspective d'un deuxième élément de la figure 1,
• [Fig. 5] la figure 5 est une vue en coupe partielle longitudinale des deux éléments des figures 2 et 4 dans une position assemblée,
• [Fig. 6] la figure 6 est une vue en perspective éclatée d'un deuxième mode de réalisation de l'invention,
• [Fig. 7] la figure 7 est une vue de détail en perspective d'un premier élément de la figure 6,
• [Fig. 8] la figure 8 est une vue de détail en perspective d'un deuxième élément de la figure 6,
• [Fig. 9] la figure 9 est une vue en coupe longitudinale des deux éléments des figures 7 et 8 dans une position assemblée,
• [Fig. 10] la figure 10 est une vue de détail en perspective représentant notamment un moyen complémentaire de désassemblage de la figure 6,
• [Fig. 11] la figure 11 est une vue de détail en perspective du moyen complémentaire de désassemblage de la figure 10 introduit dans le premier élément de la figure 7,
• [Fig. 12] la figure 12 est une vue en perspective éclatée d'un troisième mode de réalisation d'un ensemble conforme à la présente invention,
• [Fig. 13] la figure 13 est une vue de détail en perspective d'un premier élément de la figure 12,
• [Fig. 14] la figure 14 est une vue de détail en perspective d'un deuxième élément de la figure 12,
• [Fig. 15] la figure 15 est une vue en coupe longitudinale des deux éléments des figures 13 et 14 dans une position assemblée,
• [Fig. 16] la figure 16 est une vue de détail en perspective représentant au moins un moyen complémentaire de désassemblage de la figure 12,
• [Fig. 17] la figure 17 est une vue de détail en perspective du moyen complémentaire de désassemblage de la figure 16 introduit axialement dans le premier élément de la figure 13,
• [Fig. 18] la figure 18 est une vue en coupe longitudinale de la figure 17,
• [Fig. 19] la figure 19 est une vue en perspective éclatée d'un quatrième mode de réalisation d'un ensemble conforme à la présente invention,
• [Fig. 20] la figure 20 est une vue de détail en perspective d'un premier élément de la figure 19,
• [Fig. 21] la figure 21 est une vue de détail en perspective d'un deuxième élément de la figure 19,
• [Fig. 22] la figure 22 est une vue en coupe longitudinale des deux éléments des figures 20 et 21 dans une position assemblée,
• [Fig. 23] la figure 23 est une vue de détail en perspective d'un moyen complémentaire de désassemblage de la figure 19,
• [Fig. 24] la figure 24 est une vue de détail en perspective du moyen complémentaire de désassemblage de la figure 23 introduit dans le premier élément de la figure 19, et
• [Fig. 25] la figure 25 est une vue en coupe longitudinale de la figure 24.

Other advantages, objects and characteristics of the present invention emerge from the description which follows given, for the purpose of explanation and in no way limiting, with reference to the appended drawings, in which:

• [ Fig. 1 ] there figure 1 is an exploded perspective view of a first embodiment of a cosmetic product bottle cap comprising an assembly in accordance with the present invention in a disassembled position,
• [ Fig. 2 ] there picture 2 is a perspective detail view of a first element of the figure 1 ,
• [ Fig. 3 ] there picture 3 is another more complete detail perspective view of the first element of the figure 1 ,
• [ Fig. 4 ] there figure 4 is a perspective detail view of a second element of the figure 1 ,
• [ Fig. 5 ] there figure 5 is a partial longitudinal sectional view of the two elements of the figure 2 And 4 in an assembled position,
• [ Fig. 6 ] there figure 6 is an exploded perspective view of a second embodiment of the invention,
• [ Fig. 7 ] there figure 7 is a perspective detail view of a first element of the figure 6 ,
• [ Fig. 8 ] there figure 8 is a perspective detail view of a second element of the figure 6 ,
• [ Fig. 9 ] there figure 9 is a longitudinal sectional view of the two elements of the figure 7 And 8 in an assembled position,
• [ Fig. 10 ] there figure 10 is a perspective detail view showing in particular a complementary means of disassembling the figure 6 ,
• [ Fig. 11 ] there figure 11 is a perspective detail view of the additional means for disassembling the figure 10 introduced in the first element of the figure 7 ,
• [ Fig. 12 ] there figure 12 is an exploded perspective view of a third embodiment of an assembly in accordance with the present invention,
• [ Fig. 13 ] there figure 13 is a perspective detail view of a first element of the figure 12 ,
• [ Fig. 14 ] there figure 14 is a perspective detail view of a second element of the figure 12 ,
• [ Fig. 15 ] there figure 15 is a longitudinal sectional view of the two elements of the figure 13 And 14 in an assembled position,
• [ Fig. 16 ] there figure 16 is a perspective detail view representing at least one complementary means of disassembling the figure 12 ,
• [ Fig. 17 ] there figure 17 is a perspective detail view of the additional means for disassembling the figure 16 introduced axially into the first element of the figure 13 ,
• [ Fig. 18 ] there figure 18 is a longitudinal sectional view of the figure 17 ,
• [ Fig. 19 ] there figure 19 is an exploded perspective view of a fourth embodiment of an assembly in accordance with the present invention,
• [ Fig. 20 ] there figure 20 is a perspective detail view of a first element of the figure 19 ,
• [ Fig. 21 ] there figure 21 is a perspective detail view of a second element of the figure 19 ,
• [ Fig. 22 ] there figure 22 is a longitudinal sectional view of the two elements of the figure 20 And 21 in an assembled position,
• [ Fig. 23 ] there figure 23 is a perspective detail view of a complementary means of disassembling the figure 19 ,
• [ Fig. 24 ] there figure 24 is a perspective detail view of the additional means for disassembling the figure 23 introduced in the first element of the figure 19 , And
• [ Fig. 25 ] there figure 25 is a longitudinal sectional view of the figure 24 .

Description of embodiments

THE figures 1 to 5 represent a first embodiment of an assembly 1 comprising an assembly 100 in accordance with the present invention.

According to this first mode, this assembly 1 comprises an external decorative cap 2, for example a cylinder of aluminum (recyclable) of small thickness and closed by a wall 5 at an upper end 3, mounted (preferably with a very small clearance) on an assembly 100 comprising a first element/insert 110, for example made of recyclable plastic material, preferably bio-sourced, connected to a second element/insert 120, for example made of aluminum (recyclable), and a complementary means 130 of separation.

The cap 2 and the various parts 110, 120 and 130 of the assembly 100 extending along a common longitudinal axis XX'.

The first element 110 generally comprises a main body 111 of essentially cylindrical shape extending along the axis XX' provided, at the level of an upper rim 112, with three radially elastically deformable tabs 115 each provided with a end hook 116 projecting radially away from the axis XX'. The lugs 115 are distributed evenly (that is to say at 120°) over the periphery of the first element 110 and are spaced from each other by a longitudinal slot allowing the aforementioned elastic radial deformation.

The second element 120 (see figure 4 ) has meanwhile globally the shape of a hollow cylinder 121 extending along the axis XX 'and comprising an upper edge 122 provided on its inner periphery with notches 126 not emerging (three in number in the case present) angularly distributed in a regular manner on the circumference of the edge 122 (that is to say at 120 ° from each other). It will be understood by observing the figures that the notches 126 are intended to be placed opposite the hooks 116 in the assembled position of the elements 110 and 120.

More precisely, in the assembled position of the two elements 110 and 120 represented on the figure 5 , the end hooks 116 of the radially elastically deformable tabs 115 penetrate into the notches 165 of the second element 120 so that the two elements are inseparable. The cap 2 comes, meanwhile, fit around the second element 120.

All 100 of figures 1 to 5 further comprises a complementary means of separation 130 (see figure 1 ) in the form of a member having magnetic properties, for example a magnet 131 (see picture 3 ). This additional separation means 130 is movable between a first extreme position in which the hooks 116 of the lugs 115 of the first element 110 engage with the notches 126 of the second element 120 for assembling the first and second elements together, and a second extreme position in which said lugs 115 disengage radially from said notches 126 for the disassembly of the first and second elements.

In the present case, the magnet 131 takes the form of a ring which locally surrounds protrusions 117 belonging to the radially elastically deformable tabs 115 and erected axially away from the upper rim 112 so as to keep the latter close to the main axis of the assembly (assembled position). For this purpose, these three protrusions 117 each have an outer surface 118 together forming a conical profile which widens as one moves away axially from the rim 112.

Thus, when the magnet 131 moves axially along the arrow F, under the effect of an external magnetic field S of suitable strength, from its rest position (hooks 116 engaged in the notches 126) moving away from the rim 112 of the first element 110, it gradually tightens the protrusions 117 radially as it travels through the conical external shape 118 of the latter, which gradually disengages the hooks 116 from the notches 126 of the second element thanks to the radial elasticity of the tabs 115 (more precisely, the hooks 116 approach together the axis XX'). Once the hooks 116 have been completely disengaged, the two elements 110 and 120 can be completely separated in order to be recycled individually according to their material of construction, which allows easy and total recycling of the assembly 1 in its entirety.

The assembly also includes a ballast 140 intended to weigh it down (sensation of perceived quality and better hold) placed between the first element 110 and the second element 120 (see picture 3 ), and being in the form of a cylindrical metallic mass with annular section extending along the axis XX'.

A second magnet 150, of the annular type, is also provided ( figure 1 ) between the first element 110 and the second element 120, under the ballast 140) to allow for example to removably fix the assembly 1 or just the assembly 2 on a prominent device for spraying perfume, for example of the pump type or gas, in order to form an aesthetic cap over said sprayer.

THE figures 6 to 11 represent a second embodiment of an assembly 200 in accordance with the present invention.

In this embodiment, the assembly 1 comprises a cap 2 and an assembly 200 comprising a first internal element 210, a second external element 220, complementary means 230 for separating the two elements between them, a ballast 240 and a removable fixing magnet 250, these last two parts being similar to their equivalents of the previous embodiment.

The first element 210 generally comprises a main body 211 of essentially cylindrical shape extending along the axis XX' provided, at the level of an upper rim 212, with three radially elastically deformable tabs 215 each provided with a end hook 216 projecting radially away from the axis XX'. The lugs 215 are distributed evenly (that is to say at 120°) over the periphery of the first element 210 and are spaced from each other by a longitudinal slot allowing the aforementioned elastic radial deformation.

The second element 220 (see figure 8 ) has meanwhile globally the shape of a hollow cylinder 221 extending along the axis XX 'and comprising an upper edge 222 provided on its inner periphery with non-opening notches 226 (three in number in the case present) angularly distributed in a regular manner on the circumference of the edge 222 (that is to say at 120° from each other). Here again, it will be easily understood by observing the figures that the notches 226 are intended to be placed opposite the hooks 216 in the assembled position of the elements 210 and 220.

Thus, as in the first embodiment, in the assembled position of the assembly 200, the radially elastically deformable lugs 215 are in an unconstrained rest position so that the hooks 216 penetrate radially into the notches 226. The first and second elements therefore cannot be separated except by forcing them and breaking them. The cap 2 comes, meanwhile, fit around the second element 220.

In accordance with the figure 10 , the complementary means 230 for uncoupling here takes the form of a rod 231 provided, at an upper or distal end 232 (opposite to the so-called “manipulation” proximal end, for example manual or mechanical), with a prominent head provided with three radial protrusions 233 arranged at 120° from each other.

The interior of the first element 210 comprises, at the level of each of the radially elastically deformable tabs 215, three of the longitudinal grooves 214 having a conical shape which narrows slightly as one approaches the hooks 116, intended to receive the radial protrusions 234 of the complementary means of separation 230.

The operation of this assembly 200 is as follows.

The rod 231 of the complementary separation means 230 is introduced axially (manually or mechanically) inside the first element 210, and the radial protrusions 234 gradually penetrate into the internal grooves 214. The interior of the first element 210 being slightly conical at the level of said grooves 214, the protrusions 234 gradually separate the elastically deformable lugs 215 radially as the rod 231 advances axially ( figure 11 ), so that the hooks 216 disengage radially from the notches 226, thus separating the second element 220 from the first element 210. As before, it is then possible to separately recycle each of the parts of the assembly 200 and the cap according to the nature of the materials that constitute them.

THE figures 12 to 18 represent a third embodiment of an assembly 300 in accordance with the present invention.

This variant embodiment, as in the previous examples, assembly 1 comprises a cap 2 is intended to cover an assembly 300 comprising a first element 310 forming an insert made of plastic material intended to be assembled with a second element 320 made of recyclable aluminum.

As before, the first element 310 has the shape of a longitudinal cylinder 311 extending along the axis XX' and has, at the level of an edge 312, radially elastically deformable lugs 315 (see figure 13 ) each provided with an end hook 316 projecting radially away from the axis XX'. The lugs 315 are distributed evenly (that is to say at 120°) over the periphery of the first element 310 and are spaced from each other by a longitudinal slot allowing the aforementioned elastic radial deformation
The second element 320 comprises for its part (see figure 14 ) a cylindrical body 321 provided with an upper flange 322 provided with notches 316 distributed angularly in a regular manner on its periphery. As in the previous case, the notches 126 are three in number and angularly distributed in a regular manner over the circumference of the flange edge 322 (that is to say at 120° from each other). It will be understood by observing the figures that the notches 326 are intended to be placed opposite the hooks 316 in the assembled position of the elements 310 and 320.

In accordance with figure 13 And 15 , the first element 310 also comprises, on its inner wall 313 at the level of the radially elastically deformable lugs 315 (under the hooks), an internal thread 314 over a portion of its length, said thread having a small taper so that it tapers radially as one approaches the hooks 316 axially.

The complementary means of separation 330 comprises when to him, as illustrated on the figure 16 , a main body in the form of a rod 331 provided at a distal end 332 with an external thread 334 intended to cooperate with the internal thread 314 of the first element 310.

As before, the assembly 300 also includes a metal ballast 340 and a magnet 350.

The operation of this third embodiment is as follows.

Once the cap 2 has been removed, the user or a machine places the complementary means of separation 330 inside the internal element 310, then he rotates said complementary means of separation 330 so as to screw it into said internal element 310 by interpenetration of the external 334 and internal 314 threads.

During this rotation, the complementary separation means 330 penetrates axially little by little into the internal element 310 and the cooperation of the threads 334 and 314 cause the radially elastically deformable lugs 315 to move apart as the complementary means advances axially so that the hooks 316 disengage from the notches 326 of the external element 320 (see figure 17 And 18 ). It is then possible to recover on the one hand the cap 2, the ballast, the magnet 350 and the external element 320 in metal, and on the other hand the internal element 310 and the complementary means of separation 330 in plastic material .

According to a fourth embodiment illustrated by the figures 19 to 25 , the assembly 1 comprises the cap 2 and an assembly 400 composed of an outer element 410 of aluminum, an inner element 420 of plastic material, a metal weight 440, a magnet 450 to fix the assembly 1 around a prominent gas or pump propulsion system (not shown), and an external accessory 430 for separating the two elements 410 and 420.

More specifically (see figure 20 ), the first element 410 generally comprises a main body 411 of essentially cylindrical shape extending along the axis XX' provided, at the level of an upper rim 412, with three radially elastically deformable tabs 415 each provided with 'an end hook 416 projecting radially away from the axis XX'. The lugs 415 are distributed evenly (that is to say at 120°) over the periphery of the first element 410 and are spaced from each other by a longitudinal slot allowing the aforementioned elastic radial deformation.

The second element 420 (see figure 21 ) has meanwhile globally the shape of a hollow cylinder 421 extending along the axis XX 'and comprising an upper edge 422 provided on its inner periphery with non-opening notches 426 (three in number in the case present) angularly distributed in a regular manner on the circumference of the edge 422 (that is to say at 120° from each other). It will be understood by observing the figures that the notches 426 are intended to be placed opposite the hooks 416 in the assembled position of the elements 110 and 120.

In accordance with figure 20 And 22 , the first internal element 410 also comprises, on its inner wall 413, on the one hand an internal thread 414 at the level of the main body 411, then, as one approaches axially the hooks 416, at the level of the legs 15 elastically deformable radially, a conical portion 419 tapering radially as one approaches the hooks 416 axially.

Unlike the third embodiment, the thread 413 is straight and not tapered.

In this variant of the previous embodiment, the complementary means of separation 430 also comprises, in addition to a rod 431 provided locally with an external thread 434 (2-3 threads for example), an enlarged head 435 located at the level a distal end 432 and intended to cooperate with the conical inner surface 419 of the first element 410.

Thus, as the external thread 434 is screwed into the internal thread 414 of the first element 410, and the complementary means of separation 430 progresses axially in said first element 410, the enlarged head 435 separates the elastically deformable lugs 415 radially so that the hooks 416 gradually disengage from the notches 426, which ultimately allows the two elements 410 and 420 to be separated.

It is then possible to recover and recycle independently the first element 410 and the complementary means of separation 430 in plastic material on the one hand, and the outer cap 2, the second element 420, the ballast 440 and the magnet 450 on the other go.

The four embodiments thus described are particularly effective for easily recycling parts which, ordinarily, were thrown away because they could not be separated or sorted according to their material.

The number and the angular distribution of the radially elastically deformable tabs, hooks and notches can vary.

The notches may emerge through the wall of the second element.

Claims (12)

1. An assembly (100; 200; 300; 400) forming a cap for a cosmetic product container, said assembly having a longitudinal axis (XX') along which there extend a first element (110; 210; 310; 410) intended to be mounted on the container and a second element (120; 220; 320; 420) detachably assembled around the first element (110; 210; 310; 410),

   - the first element (110; 210; 310; 410) comprising tabs (115; 215; 315; 415) which are radially elastically deformable for assembling/disassembling the second element (120; 220; 320; 420) on the first element (110; 210; 310; 410), said tabs (115; 215; 315; 415) cooperating, in the assembled position, with notches (126; 226; 326; 426) formed inside the second element (110; 210; 310; 410), and

   - said assembly (100; 200; 300; 400) also comprising additional release means (130; 230; 330; 430) which is movable between a first extreme position in which the tabs (115; 215; 315; 415) of the first element (110; 210; 310; 410) are engaged with the notches (126; 226; 326; 426) of the second element (120; 220; 320; 420) for assembling the first and second elements, and a second extreme position in which said tabs (115; 215; 315; 415) are disengaged radially from said notches (126; 226; 326; 426) for disassembling the first and second elements.
2. The assembly (100) according to claim 1, characterized in that the additional release means (130) is a member having magnetic properties which is adapted to be displaced under the effect of a determined external magnetic field (S), said member having magnetic properties (130) being axially movable between a first rest position when it is placed outside the magnetic field (S) and a second active position to disengage the tabs (115) from the notches (126) when it is placed in said magnetic field (S) .
3. The assembly (100) according to claim 2, characterized in that the radially elastically deformable tabs (115) respectively have peripheral end hooks (116) adapted to penetrate into the notches (126) of the second element (120), and the member having magnetic properties (130) is a ring-shaped magnet (131) disposed around central fingers (117) which are secured to said tabs (115) and having a conical outer surface (118), said fingers (117) bringing together said tabs (115) radially in the direction of the longitudinal axis (XX') when the magnet (131) passes from the rest position to the active position, thus causing the disengagement of the hooks (116) out from the notches (126) .
4. The assembly (100) according to claim 3, characterized in that the central fingers (117), the notches (126) and the radially elastically deformable tabs (115) are three in number and are evenly angularly distributed.
5. The assembly (200; 300; 400) according to claim 1, characterized in that the additional release means (230; 330; 430) is an axially movable tool exclusively inside the first element (210; 310; 410) between a first rest position and a second active position to disengage the tabs (215; 315; 415) from the notches (226; 326; 426).
6. The assembly (200) according to claim 5, characterized in that the radially elastically deformable tabs (215) have respectively, at the free ends thereof, peripheral hooks (216) adapted to penetrate into the notches (226) of the second element (220), the tabs (215) being secured to a wall of the first element (210) being reduced in the direction of said tabs (215), and the axially movable tool (230) is a rod (231) provided, at one working end (232), with radial pushers (234), the axial displacement of the tool (230) along the inner wall of the first element (210) causing the radial spacing of the tabs (215) by the pushers (234) and the disengagement of the hooks (216) out from the notches (226).
7. The assembly (200) according to claim 6, characterized in that the first element (210) comprises, along the inner wall thereof, grooves (214) for inserting and axially guiding the pushers (234) of the tool (230) towards the hooks (216).
8. The assembly (200) according to any one of claims 6 to 7, characterized in that the pushers (234), the notches (226) and the radially elastically deformable tabs (215) are three in number and are evenly angularly distributed.
9. The assembly (300; 400) according to claim 1, characterized in that the first element (310; 410) comprises an internal thread (314; 414) and the additional release means (330; 430) is a rod (331; 431) provided with an external thread (334, 434), said rod (331; 431) being movable axially and in rotation along/about the axis (XX') inside the first element (310; 410) between a first rest position and a second active position in which the respective threads (314; 414; 334; 434) are engaged to gradually disengage the tabs (315; 415) from the notches (326; 426) of the second element (320; 420) as the screwing of the rod (331; 431) into the first element (310, 410) progresses.
10. The assembly (400) according to claim 10, characterized in that the rod (431) is further provided with an enlarged end head (435) intended to bear against a conical inner wall (419) of the first element (410) carrying the radially elastically deformable tabs (415), said tabs (415) being radially spaced apart from each other exclusively under the effect of the action of the enlarged head (435) on said inner wall (419) as the screwing of the rod (431) into the first element (410) progresses.
11. The assembly (100; 200; 300; 400) according to any one of the preceding claims, characterized in that the notches (116; 216; 316; 416) are blind housings.
12. The assembly (100; 200; 300; 400) according to any one of the preceding claims, characterized in that the notches (116; 216; 316; 416) are through holes.

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