FR3085730A1 - RING FOR CYLINDRICAL BODY - Google Patents

Abstract

Ring intended to be mounted around a cylindrical body, assembly comprising a ring mounted on such a cylindrical body and method of mounting such a ring, the ring comprising an external surface (31), a groove (33), internal and circumferential, and at least one injection orifice (40), connecting the groove (33) to the outer surface (31), configured to allow the injection of an adhesive within the groove (33).

Description

FIELD OF THE INVENTION The present disclosure relates to a ring intended to be mounted around a cylindrical body, an assembly comprising a ring mounted on such a cylindrical body and a method of mounting such a ring.

Such a ring is particularly useful for forming a stop on a bar, a tube or even a shaft, for example on a vehicle stabilizer bar.

STATE OF THE PRIOR ART In an axle vehicle, the two wheels of the same axle are generally connected by a stabilizer bar. Such a stabilizer bar, also called anti-roll or anti-roll bar, is a vehicle suspension element which forms a spring tending to secure the two wheels of the same axle. Such a stabilizer bar thus makes it possible to limit roll during turns and to reduce the deformations undergone by the suspension so as to keep the tires flat on the ground as much as possible and therefore to maintain maximum grip.

Each end of a stabilizer bar is thus fixed to the suspension triangle of a wheel, by means of swivel links, while the central part of the stabilizer bar is fixed to the chassis of the vehicle by means of d '' at least two levels.

These bearings must allow the stabilizer bar to be fixed to the chassis of the vehicle while ensuring a certain flexibility, the stabilizer bar having to be able to move slightly relative to the chassis. For this reason, the bearings conventionally comprise a flange and an elastic ring interposed between the stabilizing bar and the flange.

In some configurations, the stabilizer bar, the elastic ring and the flange are secured to each other, for example by gluing. In other configurations, the stabilizer bar retains a certain freedom of movement within the bearing, in rotation and / or in translation. However, in such cases, it remains possible to limit the amplitude of the possible translations of the bar by placing stops around the latter.

To date, these stops generally take the form of metal strips wound and tightened around the composite bar, the two ends of the strip being force-locked against one another using a buttonhole for example.

However, in such configurations, only the friction forces between the internal surface of the strip, possibly knurled, and the peripheral surface of the bar allow the stop to be held in position. It is therefore understood that such stops can sometimes undergo displacements when they undergo excessive pushing forces. In particular, these stops are especially suitable when the bar is painted, the knurling of the strip being able to grip the paint layer of the bar; on the other hand, they are ill-suited to rough metal bars with which the metal-metal contact promotes sliding.

There is therefore a real need for a ring intended to be mounted around a cylindrical body which is devoid, at least in part, of the drawbacks inherent in the aforementioned known configurations.

PRESENTATION OF THE INVENTION The present disclosure relates to a ring intended to be mounted around a cylindrical body such as a stabilizing bar, comprising an outer surface, an inner, circumferential groove, and at least one injection orifice, connecting the groove on the outer surface, configured to allow the injection of an adhesive within the groove.

With such a ring, it is possible to easily inject a ring of glue all around the cylindrical body, the groove of the ring thus forming a channeling mold and distributing the glue within the ring. The groove thus preferably extends 360 °, without interruption 30 even in cases where the ring has one or more caesures or is made up of several assembled parts.

Once solidified, this adhesive ring is glued on the one hand to the peripheral surface of the cylindrical body and enclosed in the groove of the ring, consequently blocking the position of the ring relative to the cylindrical body: no sliding of the ring is not possible without removing the glue ring. This increases the resistance of the ring to longitudinal forces, along the cylindrical body.

In addition, a robust assembly is ensured even when the materials of the ring and of the cylindrical body are close or identical in nature: this ring can therefore be used regardless of the material of the cylindrical body, whether it is coated or no.

In addition, such a ring is inexpensive to produce and very easy to mount around a cylindrical body, thereby reducing assembly costs. In particular, it is possible to automate this assembly.

In some embodiments, the outer surface considered is the peripheral surface of the ring. However, in other embodiments, this outer surface could be a lateral surface of the ring.

In some embodiments, the width of the groove is greater than 50%, preferably greater than 75%, of the width of the ring. It is intended here to consider the maximum width of the groove in an axial plane. This large width allows a large contact surface between the adhesive and the cylindrical body, thereby increasing the resistance of the assembly. Thus, preferably, the width of the groove is at least greater than 50% of the width of the ring at any point of the groove.

In some embodiments, the width of the groove is at least equal to 8 mm, preferably at least equal to 10 mm.

In some embodiments, the depth of the groove is greater than 30%, preferably greater than 50%, of the thickness of the ring. It is intended here to consider the maximum depth of the groove, in a radial plane, relative to the surface of the ring intended to be in contact with the cylindrical body. This significant depth makes it possible to strengthen the anchoring of the adhesive ring in the ring, thereby increasing the resistance of the assembly.

In some embodiments, the depth of the groove is at least 2 mm, preferably at least 3 mm.

In some embodiments, the depth of the groove is variable, preferably in the axial direction. This facilitates the distribution of the glue in the groove.

In some embodiments, the depth of the groove has a local minimum framed by two local maximums. In other words, the groove forms at least two separate lobes, which strengthens the anchoring of the adhesive ring in the ring.

In some embodiments, the groove includes an internal edge, this edge not exceeding on the side walls of the ring. The depth of the groove is thus less at the level of the edge. This facilitates the distribution of the adhesive in the groove and in particular makes it possible to guide the adhesive in the direction of the cylindrical body. In certain embodiments, said edge extends in a median plane of the groove, this plane preferably also being a median plane of the ring.

In some embodiments, said at least one injection orifice opens into the groove at said edge. The glue flows thus from the center of the groove to its lateral edges, ensuring contact with the cylindrical body at least in this central area.

In some embodiments, at least one side of said edge forms an inclined plane. In particular, each side of the edge can form an inclined plane. This inclined plane facilitates the distribution of the glue.

In some embodiments, the groove has a planar axial end wall, preferably extending radially. In particular, each of the end walls of the groove may be planar, and preferably radial. The reaction force of the adhesive ring is thus collinear with the pushing force when a push is exerted on the ring in the direction of the cylindrical body, which strengthens the resistance of the assembly.

In some embodiments, the groove, and preferably the ring as a whole, is symmetrical with respect to its median plane. The mechanical properties of the ring are thus symmetrical so that the assembly can resist thrust forces both in one direction and in the other. This also makes it possible to mount the ring without worrying about its direction, which facilitates the mounting process and saves time.

In some embodiments, the groove has a substantially invariant profile in the circumferential direction. By substantially invariant is meant to include the case where the groove has one or more local caesuras, extending over less than 5% of its length. Thus, the glue ring also has a substantially invariant profile such that its mechanical properties are identical along its circumference.

In certain embodiments, the ring comprises at least two injection orifices, these injection orifices preferably being diametrically opposite. This allows several injection points, simultaneous or not, thus promoting a homogeneous distribution of the adhesive in the groove. This also allows injection through a first port and injection control through a second port.

In some embodiments, at least one injection orifice 15 extends radially. This is preferably the case for all the injection orifices.

In some embodiments, at least one injection orifice forms a funnel at its end opening onto the outer surface. This is preferably the case for all the injection orifices. This facilitates the injection of the glue. This also helps the positioning of an injection tool, manual or robotic.

In certain embodiments, the ring comprises at least one immobilization tip configured to penetrate at least partially into the cylindrical body during the installation of the ring around the cylindrical body. This immobilization tip makes it possible to maintain the position of the ring against possible involuntary displacements before the injection of the glue. Such an immobilization tip is very particularly suitable when the cylindrical body is provided with a coating, and in particular a paint, into which the immobilization tip can penetrate. Thus, it is preferable that the hardness of the ring is greater than that of this coating.

In certain embodiments, at least one immobilization point extends from the internal edge of the groove. This is preferably the case for all immobilization tips. This central position facilitates immobilization of the entire ring.

In some embodiments, at least two immobilization tips extending on either side of an injection orifice. This makes it possible to immobilize very particularly the zone of the ring at the level of which the injection takes place.

In certain embodiments, the ring comprises two half-rings provided with an assembly device making it possible to assemble the two half-rings. The ring can thus be installed very easily around the cylindrical body by assembling the two half-rings around the latter.

In some embodiments, the two half-rings are identical. Thus, a single part number and a single production line are necessary. This also saves time during assembly since no risk of confusion between two different references is possible.

In some embodiments, the assembly device comprises elastic interlocking members. The assembly of the two half-rings can thus be done very easily and very quickly, including by hand.

In some embodiments, the elastic casing members include at least one elastic tongue and a corresponding shoulder, the elastic tongue being configured to engage and be retained behind the corresponding shoulder. Preferably, one end of each half-ring has an elastic tongue while the other end has a shoulder.

In some embodiments, at least one elastic tongue extends from a base set back relative to the circumferential end surface of the half-ring considered. The elastic tongue is thus longer, and therefore more flexible, which facilitates its fitting behind the shoulder of the opposite half-ring. However, in other embodiments, the base of this tongue could also be located on the surface of the circumferential end of the half-ring considered.

In some embodiments, at least one injection orifice is provided in the middle of a half-ring. The injection is thus carried out from the center towards the circumferential ends of the half-ring.

In some embodiments, the ring takes the form of a split ring made in one piece. Thus, the two circumferential ends of the ring are joined, that is to say contiguous or arranged end to end. In such a case, the groove remains continuous over the entire circumference of the ring, despite the break in the ring. The ring can thus be formed in one piece, which simplifies the manufacturing line and reduces manufacturing costs.

In certain embodiments, the split ring is flexible enough to allow it to be opened and closed with a view to its installation around the cylindrical body. This deformation can be plastic and / or elastic. For example, the split ring may have an initial planar shape and then be wound around the cylindrical body by plastic deformation. Alternatively, the split ring can have an initial circular shape and its slot can be widened by elastic, reversible deformation, to allow the cylindrical body to pass.

In certain embodiments, this split ring is devoid of a closure member making it possible to connect the two circumferential ends of the split ring. Indeed, the glue which will be injected into the groove of the ring will freeze the shape of the ring.

In some embodiments, at least one injection orifice is formed by two half-passages each provided at a circumferential end of the split ring and joined against each other. In such a case, it is possible to cut the end of the split ring and to carry out the cutting at the origin of this half-passage in a single operation, using the same tool.

In some embodiments, the ring is made essentially of metal, preferably aluminum or aluminum alloy. This material is inexpensive. It is moreover sufficiently plastic (in the mechanical sense of the term) to allow it to be wound around the cylindrical body if need be. In certain embodiments, the ring is made essentially of plastic, this plastic preferably comprising a polyamide. It can in particular be made essentially of polyamide, for example PA 6.6. This plastic material can also include reinforcements, in particular of the fibrous type, for example glass fibers.

In some embodiments, the ring has at least one color area different from the color of the raw material of the ring. The entire ring can have this color. This color can be obtained by adding a dye to the material or by painting. This allows a particular color to be associated with a diameter or a particular application of the ring. Thus, all the rings used on a given assembly line, for a given application or a given diameter, will be of the same color, which makes it easier for operators, saving time while reducing the risk of error. In addition, the cylindrical bodies on which these color rings are mounted also benefit from this color code as a result: it is therefore very easy to sort the finished products and then to select a product of the right diameter by checking the color of the ring mounted on it.

The present description also relates to an assembly, comprising a cylindrical body, extending in a main direction and having a peripheral surface, at least one ring according to any one of the preceding embodiments, surrounding the cylindrical body, and a volume of adhesive, retained in the groove of the ring and applied to the peripheral surface of the cylindrical body.

All the features and advantages of the various embodiments of the ring presented above can be directly applied to this assembly.

Furthermore, in certain embodiments, the cylindrical body is a bar, a shaft or a tube.

In some embodiments, the cylindrical body is a stabilizer bar for a vehicle. The latter can be full or hollow.

In some embodiments, the peripheral surface of the cylindrical body is painted. However, is can also be naked, devoid of paint.

In certain embodiments, the internal diameter of the ring corresponds substantially to the diameter of the cylindrical body. By "substantially corresponds" means that there may remain a functional game; in particular, the difference in diameter is less than 5%, preferably less than 2%, of the diameter of the cylindrical body.

In certain embodiments, the volume of adhesive comprises a two-component adhesive, preferably of the epoxy or polyamide type.

The present disclosure also relates to a method of mounting a ring on a cylindrical body, comprising the following steps: supply of a ring according to any one of the preceding embodiments, installation of the ring around the cylindrical body , injecting an adhesive into the groove of the ring via at least one injection port of the ring, and drying the adhesive.

All the characteristics and advantages of the various embodiments of the ring or of the assembly presented above can be directly applied to this process.

In the present description, the terms "axial", "radial", "circumferential", "interior", "exterior" and their derivatives are defined relative to the main axis of the cylindrical body; "axial plane" means a plane passing through this main axis and "radial plane" means a plane perpendicular to this main axis.

In the present description, it is considered that a part or part of a part is made essentially of a given material when it is formed at least 80%, preferably 90%, more preferably 99%, by this material.

The term “elastic fitting” (also frequently called “snap-fastening” or “clipping”) means a method of assembling two parts by engagement and elastic deformation (generally local deformation of only part of a part, for example of a tongue, or of a circumferential element of said part, or even by deformation of all the parts involved in the assembly). When the two parts are engaged in the nesting position, the parts have generally returned to their initial shape and no longer exhibit elastic deformation (or less elastic deformation). When the two parts are engaged with each other in the nesting position, they cooperate with each other so as to oppose or even block the relative movements of said parts in the direction of disengagement (opposite direction to the sense of engagement). In the nesting position, the two parties can also cooperate so as to oppose, or even block, their relative movements in the direction of extending the engagement, beyond the nesting position.

The aforementioned characteristics and advantages, as well as others, will appear on reading the detailed description which follows, of exemplary embodiments of the ring and of the proposed method. This detailed description refers to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The attached drawings are schematic and aim above all to illustrate the principles of the presentation.

In these drawings, from one figure (FIG) to another, identical elements (or parts of elements) are identified by the same reference signs. In addition, elements (or parts of elements) belonging to different embodiments but having a similar function are identified in the figures by numerical references incremented by 100, 200, etc.

FIG 1 is a perspective view of a stabilizer assembly according to the disclosure.

FIG 2 is a perspective view of a first example of a ring mounted on a stabilizer bar.

FIG 3 is an axial section view of the assembly of FIG 2.

FIG 4 is a view in radial section along plane IV of FIG 3.

FIG 5 is a perspective view of the first example of a ring.

FIG 6 is a perspective view of a half-ring of the first example of a ring.

FIG 7 is a top view of this half-ring.

FIG 8 is a sectional view along plane VIII of FIG 7.

FIG 9 is a perspective view of a second example of a ring.

FIG 10 illustrates the installation of the second example of a ring around a stabilizing bar.

DETAILED DESCRIPTION OF EMBODIMENT (S) In order to make the presentation more concrete, examples of rings are described in detail below, with reference to the accompanying drawings. It is recalled that the invention is not limited to these examples.

FIG 1 shows a stabilizer assembly 1 for a vehicle comprising a stabilizer bar 10, solid or hollow, painted or not, the central part 11 is equipped with two bearings 20. The bearings 20 are intended to be fixed to the chassis of the vehicle while the ends 12 of the stabilizer bar 10 are intended to be fixed to parts of the vehicle integral with each wheel of the same axle, in particular the suspension triangle of each wheel of the axle. In the present example, the stabilizer bar 10 can rotate and slide within the bearings 20.

This stabilizer assembly further comprises two rings 30 mounted around the stabilizer bar 10 in order to form stops blocking the movement of the bar 10 when they meet one and / or the other of the bearings 20.

In this example, the rings 30 are mounted in symmetrical positions located inside, in the left-right direction of the stabilizer bar 10, of the two bearings 20. Insofar as the distance between the two bearings 20 is imposed by their fixing to the chassis of the vehicle, it is understood, once the stabilizer bar 10 mounted on the vehicle, that the excursion of the stabilizer bar 10 to a first side is stopped when the ring 30 provided on this same first side meets the next level 20 neighbor; likewise, the excursion of the stabilizing bar 10 towards the second side is stopped when the second ring 30 meets the second bearing 20.

In this example, the rings 30 are mounted inside the bearings 20; however, in other exempt cases, they could be mounted outside the bearings 20. It is also possible to mount two rings 30 for each bearing 20, these rings 30 framing the bearing 20.

The rings 30 are mounted around the stabilizer bar 10 so as to leave a clearance of at least 0.5 mm with the mounting position of the bearings 20: this leaves sufficient play to allow the rotation of the bar stabilizer 10 within the bearings 20.

However, this play preferably remains less than 1 mm (the play shown in FIG 1 is greater to increase the readability of the figure).

FIGS 2 to 8 illustrate a first example of a ring 30.

In FIGS 2 to 4, this ring 30 is shown mounted on the stabilizer bar 5.

This ring 30 includes a peripheral outer surface 31, side walls 32 and an inner groove 33 opening on its inner surface 34, this inner surface 34 being defined as the virtual cylindrical passing the inner ends of the 10 side walls 32 and bounded by them. The inner diameter of the ring, that is to say that of its inner surface 34, is substantially equal to that of the bar 10 on which it is to be mounted, at a functional clearance near 0.2 mm for example.

The groove 33 extends circumferentially over 360 ° and 15 has an invariant profile in rotation about the central axis A of the ring 30.

This profile of the groove 33 takes substantially the shape of an M with a central edge 35 advancing in the groove 33 and delimiting two symmetrical lobes 36. The depth of the groove 33, measured 20 radially from the inner surface 34, is minimal p at this edge 35. Each lobe 36 has, from the edge 35 towards the lateral ends of the ring 30, a blank 37, straight and inclined towards the outside, and an end wall 38, s 'extending straight and radially. The depth of the groove 33 is thus maximum P at the bottom of each lobe 36, that is to say at the junction between the blank 37 and the end wall 38, this junction can be chamfered.

In this example, the minimum depth p measures 1 mm, or approximately 17% of the thickness of the ring 30 measured between the internal surface 34 and the peripheral surface 31. The maximum depth P measures for its part 3, 5 mm or approximately 60% of the thickness of the ring 30.

Furthermore, in this example, the width of the groove 33 measures 10 mm, or approximately 83% of the width of the ring 30.

The ring 30 also includes two injection holes 35 40, diametrically opposite. These injection orifices 40 extend radially between the peripheral surface 31 of the ring 30 and the groove

33. More specifically, each injection orifice 40 has a funnel section 41 converging from the peripheral surface 31 and opens at the edge 35 of the groove 33.

The edge 35 has, on either side of each injection orifice 40, an immobilization point 42. The length of the immobilization points 42 is greater than the minimum depth p so that they protrude inwardly relative to the inner surface 34 of the ring 30. Consequently, when the ring 30 is installed around the cylindrical bar 10, these immobilization spikes 42 10 partially sink into the peripheral surface 13 of the stabilizer bar 10, if necessary in the paint layer of the stabilizer bar 10, in order to temporarily immobilize the ring 30.

In this first embodiment, the ring 30 is formed of two half-rings 50 assembled with one another. These two half-rings 50 are strictly identical. In this example, they are made by molding in polyamide 6.6 reinforced with glass fibers up to 50%. A dye is also added to this material in order to color the final ring 30 in the mass, the color being chosen as a function of the diameter of the ring 30.

The half-ring 50 has two circumferential ends 51, 52. The first circumferential end 51 has an elastic tongue 53 extending orthogonally from this first circumferential end 51 and having at its end a hook part 54. More precisely, in this example, the elastic tongue 53 extends from a recess 55 approximately 2 mm deep formed in the front surface of the first circumferential end 51.

The second circumferential end 52 has an opening 56 opening into a cavity 57, the internal edge of this opening 56 forming a shoulder 58.

The elastic tongue 53 and the opening 56 are positioned so that, when two half-rings 50 are brought upside down one against the other, the elastic tongue 53 can penetrate into the cavity 57 by l opening 56 at the cost of a slight elastic deformation, the hook part 54 of the tongue 53 engaging behind the shoulder 58 once the two half-rings 50 are completely joined, thus blocking their assembly.

The cavities 57 also open onto the peripheral surface 31 of the ring 30 so that the hook parts 54 are accessible from the outside. This makes it possible to separate the two half-rings 50 if necessary by pushing, for example, the hook parts 54 using a screwdriver tip.

Once two half-rings 50 are assembled in this way, their groove sections join together without interruption so as to form the groove 33 described above. Similarly, once assembled, the peripheral surfaces of two half-rings join together without interruption to form the peripheral surface 31 described above.

The injection orifices 40 are provided for their part so that each half-ring 50 comprises a single injection orifice 15 located in the middle, equidistant from its two circumferential ends 51, 52.

The mounting of this ring 30 around the stabilizer bar 10 will now be described.

The stabilizer bar 10 to be fitted is provided, preferably using a conveyor; its weight and dimensions are checked and then it undergoes flame treatment. During this flame treatment, the zones to receive the rings 30 are heated for approximately 6 s using a torch flame, without exceeding the temperature of 100 ° C. During this flaming step, the bar 10 is rotated about its axis.

In parallel, a first half-ring 50 is provided for each of the rings 30 to be mounted. This half-ring 50 is preferably supplied using a device capable of presenting the half-ring 50 in a predetermined orientation, for example using a vibrating bowl. This first half-ring 50 is then installed in the impression of a tool;

the same is done for each of the rings 30 to be fitted.

The stabilizer bar 10 is then installed in the same tool by engaging it within the lower half-rings 50 already installed.

A second half-ring 50 is provided for each of the rings 30 to be mounted, preferably again in a predetermined orientation. This second half-ring 50 is then attached over the bar 10 and assembled on the first half-ring 50 in the manner explained above; the same is done for each of the rings 30 to be fitted. An adhesive is then injected simultaneously into each of the injection orifices 40, for example using a robot injector. The glue then fills the entire groove 33 and is applied against the peripheral surface 13 of the bar 10, over the entire front surface of the groove 33.

In the present example, the adhesive is a two-component adhesive of the epoxy type.

The bar 10 equipped with its rings 30 is then heated, for example in a cooking tunnel, to a temperature between 80 and 100 ° C. The duration of this heating is fairly short, less than 10 minutes, for example 5 minutes. At the end of this heating step, the glue has dried and thus forms a ring of solidified glue 60, filling the entire groove 33 and glued both to the peripheral surface 13 of the bar 10 and to the walls of throat 33.

Finally, the assembly obtained is checked, then conditioned or stored for subsequent operations, for example the mounting of the bearings 20.

FIGS 9 and 10 illustrate a second example of a ring 130. In a similar manner to the first example, this ring 130 has a peripheral external surface 131, side walls 32 and an internal groove 133. Its internal diameter is also substantially equal to that of the bar 110 on which it is to be mounted, apart from a functional clearance.

The geometry of the groove 133 is entirely similar to that of the first example. In addition, although it has only one injection port 140 in the example shown, it might as well include two or more.

On the other hand, in this first embodiment, the ring 130 is no longer formed of two assembled half-rings but of a single split ring 170. In this example, this split ring 170 is made of aluminum.

This split ring 170 thus takes the form of an initially flat strip which can be wound by plastic deformation around the bar 110 so as to form a split ring. Thus, the two circumferential ends 171, 172 of the strip are joined, that is to say 5 brought against each other in a contiguous or substantially contiguous manner. In particular, once the ring 170 is wound, the gap 173 separating these circumferential ends 171, 172 is less than 1 mm, preferably even less than 0.5 mm.

Consequently, once the two circumferential ends 171, 172 are butted against one another in this way, the caesura 173 is fine enough not to constitute a substantial discontinuity in the groove 133, the glue being able to only difficult to escape by this caesura 173.

In this example, it is further noted that the injection port 15 140 is actually formed of two symmetrical half-passages 174, 175, each provided at a circumferential end 171, 172 of the ring split 170 and joined together.

The mounting of this ring 130 around the stabilizer bar 110 is similar to that of the first example except that the split ring 170 is first supplied in a completely flat shape before being bent and installed in the tool imprint.

Then, after the installation of the stabilizing bar 10 in the tool by engaging it within the openings of the split rings 170, the circumferential ends 171, 172 of the split rings 170 are closed and joined one against the other. the other. The injection of the adhesive can then take place via the injection orifice 140 thus formed.

Although the present invention has been described with reference to specific exemplary embodiments, it is obvious that modifications and changes can be made to these examples without departing from the general scope of the invention as defined by the claims. In particular, individual features of the various illustrated / mentioned embodiments can be combined in additional embodiments. Therefore, the description and the drawings are to be considered illustrative rather than restrictive.

It is also obvious that all the characteristics described with reference to a method can be transposed, alone or in combination, to a device, and conversely, all the characteristics described with reference to a device can be transposed, alone or in combination, to a process.

Claims (13)

1. Ring intended to be mounted around a cylindrical body such as a stabilizing bar, comprising an external surface (31), a groove (33), internal and circumferential, and at least one injection orifice (40), connecting the groove (33) on the outer surface (31), configured to allow the injection of an adhesive within the groove (33). 2. Ring according to claim 1, in which the width of the groove (33) is greater than 50%, preferably greater than 75%, of the width of the ring (30). 3. Ring according to claim 1 or 2, wherein the depth (P) of the groove (33) is greater than 30%, preferably greater than 50%, of the thickness of the ring (30). 4. Ring according to any one of claims 1 to 3, wherein the groove (33) comprises an internal edge (35), this edge (35) not projecting on the side walls (32) of the ring (33) . 5. Ring according to any one of claims 1 to 4, wherein the groove (33) has an end wall (38) axial plane, preferably extending radially. 6. Ring according to any one of claims 1 to 5, in which at least one injection orifice (40) forms a funnel (41) at its end opening onto the external surface (31). 7. Ring according to any one of claims 1 to 6, comprising at least one immobilizing tip (42) configured to penetrate at least partially into the cylindrical body (10) during the installation of the ring (30) around the cylindrical body (10). 8. Ring according to any one of claims 1 to 7, comprising two half-rings (50) provided with an assembly device (53, 58) for assembling the two half-rings (50). 9. Ring according to claim 8, in which the assembly device comprises at least one elastic tongue (53) and a corresponding shoulder (58), the elastic tongue (53) being configured to engage and be retained behind the corresponding shoulder (58). 10. Ring according to any one of claims 1 to 9, taking the form of a split ring (170) made in one piece, the split ring (170) being flexible enough to allow its opening and closing in view of its installation around the cylindrical body (110). 11. Ring according to any one of claims 1 to 10, having at least one color zone different from the color of the raw material of the ring (30). 12. Assembly, comprising a cylindrical body (10), extending in a main direction (A) and having a peripheral surface (13), at least one ring (30) according to any one of claims 1 to 11, surrounding the cylindrical body (10), and a volume of adhesive (60), retained in the groove (33) of the ring (30) and applied to the peripheral surface (13) of the cylindrical body (10). 13. A method of mounting a ring around a cylindrical body, comprising the following steps: supply of a ring (30) according to any one of claims 1 to 11, installation of the ring (30) around the cylindrical body (10), injection of an adhesive (60) into the groove (33) of the ring (30) via at least one injection orifice (40) of the ring (30), and drying of the adhesive (60).