Patent Application
20240131862
The present invention relates to an insert for a sidewall of a motorcycle tyre, a set of a plurality of inserts, an assembly of an insert and a tyre, and a method for mounting an insert or a set of a plurality of inserts on a sidewall of a motorcycle tyre.
A sidewall insert for a motorcycle tyre is known in the prior art. Such a sidewall insert allows for the customized decoration of each tyre of the motorcycle on which it is mounted. Some users thus wish to avail of a tyre having a portion of the sidewall that is a similar or even identical colour to the fairing of the motorcycle. To this end, before the tyre is mounted on its mounting support, for example a rim, a qualified technician positions a ring in the appropriate colour between the tyre and each mounting edge of the mounting support so that, after the tyre has been inflated on the mounting support, the insert is trapped between the tyre and the mounting support. After inflation and balancing, the mounted assembly is then mounted on the motorcycle, either at the front on a fork arm, or at the rear on a swing arm.
However, when the user wishes to change the insert, either because it has been damaged or because they wish to change the colour, the user must call upon a qualified technician which, as well as being relatively costly, requires immobilizing the motorcycle in order to remove the mounted assembly from the motorcycle and allow the removal of the insert and the mounting of a new insert.
The invention aims to provide a sidewall insert for a motorcycle tyre that allows a change of insert that does not require intervention by a qualified technician.
To this end, the invention relates to an insert for a sidewall of a motorcycle tyre that is capable of being removably fastened to a sidewall of the motorcycle tyre, the sidewall insert forming an angular sector of a ring, the angular sector ranging from 330° to 380°, preferably from 350° to 370°, and more preferably being substantially equal to 360°, the insert comprising two free end edges arranged so that, when the tyre is mounted on a mounting support in order to form a mounted assembly and when the mounted assembly is mounted on the motorcycle, the insert can be mounted on and removed from the sidewall of the tyre without removing the mounted assembly from the motorcycle.
As the insert is removable, it can be mounted and removed at will without impairing the fastening of the insert to the sidewall of the tyre or damaging the tyre. This makes it possible envisage fastening using chemical means, for example using an adhesive layer, or fastening using mechanical means.
In the invention, so that the insert can be mounted and removed without removing the mounted assembly from the motorcycle, the insert is delimited by two free end edges making it possible, by moving them relative to each other, to create sufficient space for the insert to pass around a fork arm, a branch of a swing arm or a hub of the mounted assembly of the motorcycle. This thus avoids the need for intervention by a qualified technician.
The insert according to the invention can be such that the two free end edges can be placed in contact with each other so that the insert fully forms a ring around a central point, for example the axis of rotation of the tyre. The insert according to the invention can also be such that the two free end edges cannot be placed in contact with each other so that the insert only forms a portion of a ring. In both cases, the insert forms an angular sector of a ring. A ring extends circumferentially around a central point so that it makes a full turn around it. As described above, the angular sector of the ring delimited between each free end edge can be such that the insert fully forms the ring or can be such that the insert only forms a portion of the ring.
If the insert fully forms the ring, the ring has a discontinuity situated between the free end edges of the insert. The insert is such that a portion of the insert can be twisted so as to axially offset each free end edge relative to the other and allow the insert to pass around a fork arm, a branch of a swing arm or a hub of the mounted assembly of the motorcycle. Alternatively or in combination with the twisting, the insert is such that a portion of the insert can be compressed and a portion can be extended so as to circumferentially separate each free end edge from the other and allow the insert to pass around a fork arm, a branch of a swing arm or a hub of the mounted assembly of the motorcycle.
If the insert only forms a portion of the ring, the insert is such that there is sufficient space between each free end edge to allow the insert to pass around a fork arm, a branch of a swing arm or a hub of the mounted assembly of the motorcycle without moving one free end edge relative to the other. Alternatively, the insert is such that there is insufficient space between each free end edge to allow the insert to pass around a fork arm, a branch of a swing arm or a hub of the mounted assembly of the motorcycle. In this case, the insert is such that it comprises a portion that can be twisted and/or a portion that can be compressed and a portion that can be extended as described above.
In order to determine the angle of the angular sector, the theoretical circle passing through the two free end edges of the insert is taken into consideration. The angular sector is the angle between the straight lines joining the free end edges of the insert and the centre of the theoretical circle, which centre is situated equidistant from the free end edges of the insert and the concave side of the angular sector. The free end edges are the visible edges of the insert once it has been mounted on the tyre. The angle of the angular sector thus does not take into account any overlapping region between two portions of the insert, at least one portion of which is not visible once the insert has been mounted on the tyre.
A single insert per sidewall can be used, this insert fully forming the ring, which is discontinuous at one point. This makes it possible to limit the number of interfaces between free end edges and the adjustment thereof. When the two free end edges are in contact with each other, the ring forms a visually circumferentially continuous assembly.
Optionally and advantageously, the insert comprises first and second circumferential ends, and each first and second circumferential end bears complementary means for locking each first and second circumferential end to each other between:
The locking means make it possible to ensure that the insert is held in its locked position and thus contribute to the durable fastening of the insert to the sidewall.
As a variant, each first and second circumferential end has a tapered profile that complements each second and first circumferential end respectively in at least part of an overlapping region between the first and second ends. The manufacturing of the insert is thus simplified. Tapered profile is given to mean that, considering the average thickness of the insert, the thickness of the insert is strictly less than the average thickness of the insert over at least one portion starting from each first and second end.
Preferably and optionally, the ring has a centre of symmetry.
The insert can thus be positioned without it being necessary to adjust the azimuth thereof relative to a precise point of the tyre sidewall.
In addition, the insert is radially delimited by a radially inner edge and a radially outer edge. Each radially inner and outer edge can follow, for example, a circular curve, an undulating curve, a crenelated curve, an oval curve, a straight curve or a broken curve around the central point between each free end edge. Here, the word “curve” is meant in the geometrical sense of the term according to which the word “curve” denotes certain subsets of the plane and of the usual space. For example, circles or portions of circles, straight lines, segments, polygonal lines and sinusoids are curves.
The tyre according to the invention is a motorcycle tyre. A motorcycle tyre is for example defined in the manual of the European Tyre and Rim Technical Organisation, or “ETRTO”, 2020 standard. Such a tyre has a section in a meridian section plane characterized in particular by a section height H and a nominal section width SW according to the ETRTO 2020 manual.
A motorcycle tyre, unlike a passenger vehicle tyre, has a very cambered tread, having a distinctive marked curvature. In particular, this curvature is characterized by the value of the curvature rate H′/SW, where H′ is the radial height of the tread separating the radially outermost point of the tyre from the equatorial circumferential plane E passing through the radially outer ends of said tread and SW is the nominal section width according to the manual of the ETRTO 2020 standard, as shown in
Advantageously, the tyres to which the invention relates are such that the nominal aspect ratio AR, expressed as a percentage and as defined according to the ETRTO 2020 manual, is at least equal to 40, preferably at least equal to 65, and is at most equal to 100, preferably at most equal to 80, and the nominal section width SW as defined according to the ETRTO 2020 manual is at least equal to 50 mm, preferably at least equal to 90 mm, and more preferably equal to 100 mm, and at most equal to 240 mm, preferably at most equal to 180 mm, more preferably at least equal to 150 mm. In addition, the nominal diameter D at the rim flange, as defined according to the ETRTO 2020 manual, is at least equal to 8 inches, preferably at least equal to 13 inches, and at most equal to 24 inches, preferably at most equal to 21 inches.
Axial direction is given to mean the direction substantially parallel to the main axis of the tyre, that is, the axis of rotation of the tyre.
Circumferential direction is given to mean the direction substantially perpendicular both to the axial direction and to a radius of the tyre (in other words, tangent to a circle centred on the axis of rotation of the tyre).
Radial direction is given to mean the direction along a radius of the tyre, that is, any direction that intersects the axis of rotation of the tyre and is substantially perpendicular to that axis.
Mid-plane of the tyre (denoted M) is given to mean the plane perpendicular to the axis of rotation of the tyre, which is situated axially halfway between the two beads and passes through the axial middle of the crown reinforcement.
Equatorial circumferential plane of the tyre (denoted E) is given to mean, in a meridian section plane, the plane passing through the equator of the tyre, perpendicular to the mid-plane and to the radial direction. The equator of the tyre is, in a meridian section plane (plane perpendicular to the circumferential direction and parallel to the radial and axial directions), the axis parallel to the axis of rotation of the tyre and passing through the axially outermost points of the tyre.
The height H of the tyre is the radial distance between the radially outermost point of the tread suitable for coming into contact with the ground and the radially innermost point of the tyre suitable for coming into contact with a support, for example a rim.
Meridian plane is given to mean a plane parallel to and containing the axis of rotation of the tyre and perpendicular to the circumferential direction.
Bead is given to mean the portion of the tyre suitable for making it possible to attach the tyre to a mounting support, for example a wheel comprising a rim. Each bead is thus in particular suitable for being in contact with a flange of the rim allowing it to be attached.
Any range of values denoted by the expression “between a and b” represents the range of values extending from more than a to less than b (that is, excluding the end-points a and b), whereas any range of values denoted by the expression “from a to b” means the range of values extending from a to b (that is, including the strict end-points a and b).
In one embodiment making it possible to obtain an insert generally following the curvature of the tyre, the insert forms an angular sector of a circular ring.
Circular ring is given to mean there is at least one circle all of the points of which belong to the insert. A circular ring can thus have radially inner and radially outer edges following a circular curve, or radially inner and radially outer edges following a crenelated or undulating curve.
In one embodiment making it possible to obtain an insert the radially inner and outer edges of which follow the curvature of the tyre, the insert comprising a radially inner edge and a radially outer edge, each radially inner and outer edge follows a circular curve.
Circular is given to mean that each radially inner and outer edge follows a curve the radius of curvature of which is non-infinite and constant.
Regardless of the embodiment, the insert preferably optionally comprises removable means for fastening the insert to the sidewall of the tyre comprising fastening means through reversible elastic clipping of the insert to the sidewall of the tyre.
Reversible clipping or snap-fastening is an assembly method based on the elastic deformation of the parts during mounting. Here, the elasticity of the sidewall of the tyre, generally made from an elastomeric material, is exploited to ensure the reversible fitting of the insert into the sidewall and therefore ensure that the insert is removable from the sidewall.
Compared to an insert comprising chemical fastening means, the insert comprising fastening means through reversible elastic clipping, which are mechanical means, make it possible to ensure that the insert is removable in the long term.
In one variant, the means for fastening the insert to the sidewall of the tyre through reversible elastic clipping comprise at least one fastening tab or nipple borne by a face of the insert intended to be concealed when the insert is fastened to the sidewall of the tyre. A tab is relatively elongated, whereas a nipple is less elongated. The tab or nipple is suitable for interacting with a complementary slot or cavity respectively made in the sidewall of the tyre. Unlike in a variant in which the tab or nipple is borne by the sidewall of the tyre, the variant described here makes it possible to preserve the general appearance of the sidewall of the tyre by avoiding elements that would protrude from the outer surface of the sidewall in the event that the sidewall of the tyre was not bearing an insert. In addition, in this variant, a tab or nipples can be used the radial width of which is relatively small compared to the height of the sidewall of the tyre on which it is intended to be mounted. The complementary recess made in the sidewall of the tyre thus also has a relatively small radial width compared to the height of the sidewall. When the user chooses to no longer use the insert, or uses one or more inserts forming an angular sector of less than 360°, the complementary recess or the portion of the complementary recess that is then visible on the sidewall does not detract from the aesthetics of the tyre.
In another variant that is equally advantageous from an aesthetic point of view when the tyre is without an insert, the insert comprising a radially inner edge and a radially outer edge, the means for fastening the insert to the sidewall of the tyre through reversible elastic clipping comprise at least one fastening tab borne by each radially inner and outer edge of the insert. In this variant, in order to avoid any unintentional unclipping of the insert from the sidewall, it will be ensured that the radius of curvature of the interface between the insert and the sidewall is relatively large.
In these two variants, the tab preferably extends over a total curvilinear length at least equal to 50% of the curvilinear length of the insert. The tab can be continuous or discontinuous.
In one configuration, the insert having a face intended to be visible when the insert is fastened to the sidewall of the tyre, the visible face is monochrome and/or has a single appearance texture. Monochrome is given to mean that the face of the insert is only a single colour. Single appearance texture is given to mean that each point of the surface of the insert has the same orientation, roughness and undulation characteristics which define, as is known, a surface appearance.
In this configuration, the manufacturing costs of the insert are reduced. In the embodiment in which a plurality of inserts are used on the same sidewall, it is thus possible to have a plurality of colours and/or a plurality of appearance textures by using inserts that each have a visible face that is monochrome and/or has a single appearance texture.
In another configuration, the insert having a face intended to be visible when the insert is fastened to the sidewall of the tyre, the visible face is polychrome and/or has a plurality of different appearance textures. Polychrome is given to mean that the face of the insert has, on different parts of the insert, a plurality of distinct colours. Different appearance textures is given to mean that several parts of the surface of the insert have different orientation and/or roughness and/or undulation characteristics.
For example, an insert can be envisaged comprising portions of the visible face in one colour, portions of the visible face comprising a graphic, for example writing, in the first colour on a background of a second colour, the graphic being produced with an appearance texture identical to or different from the texture of the portions without a graphic.
This thus makes it possible to have a plurality of colours and/or a plurality of appearance textures without having to worry about the interfaces between a potential plurality of inserts.
In a particularly low-cost embodiment, the insert is formed from a monolithic material. Preferably, the monolithic material is through-dyed. Advantageously, the monolithic material comprises a polymeric material. The polymeric material can be heat-curable or thermoplastic.
In another embodiment, the insert comprises a first part formed from a first monolithic material and a second part formed form a second monolithic material different from the first monolithic material. Advantageously, the first part is intended to be visible when the insert is fastened to the sidewall of the tyre and the second part comprises means for fastening through reversible elastic clipping. The first part thus forms a visible appearance part and the second part forms afunctional fastening part.
Preferably, the first part is through-dyed. Advantageously, the first monolithic material comprises a polymeric material. The polymeric material can be heat-curable or thermoplastic. A first polymeric material and a second metallic material overmoulded by the first material can be envisaged. As a variant, the first part is made from a natural material such as wood, cotton, hemp, linen or leather. Whether by means of a polymeric or natural material, it can be envisaged that these materials form fabrics, whether smooth or tousled, for example in order to imitate fur.
In another embodiment, the insert can comprise means for reflecting light, for example such as a reflective surface. Alternatively or in combination, the insert can also comprise means for generating light, for example such as a strip of light-emitting diodes.
The invention also relates to the use of an insert for a sidewall of a motorcycle tyre that is capable of being removably fastened to a sidewall of the motorcycle tyre, the sidewall insert forming an angular sector of a ring, the insert comprising two free end edges arranged so that, when the tyre is mounted on a mounting support in order to form a mounted assembly and when the mounted assembly is mounted on the motorcycle, the insert can be mounted on and removed from the sidewall of the tyre without removing the mounted assembly from the motorcycle.
In one embodiment using the insert described above, a single sidewall insert is used, the single insert being suitable for being removably fastened to a sidewall of a motorcycle tyre, the single sidewall insert forming an angular sector of a ring, the angular sector ranging from 330° to 380°, preferably from 350° to 370°, and more preferably being substantially equal to 360°, and comprising two free end edges arranged so that, when the tyre is mounted on a mounting support in order to form a mounted assembly and when the mounted assembly is mounted on the motorcycle, the single insert can be mounted on and removed from the sidewall of the tyre without removing the mounted assembly from the motorcycle.
The invention also relates to the use of a set of a plurality of inserts, in which each of the inserts in the set is suitable for being removably fastened to a sidewall of a motorcycle tyre, each sidewall insert comprising two free end edges arranged so that, when the tyre is mounted on a mounting support in order to form a mounted assembly and when the mounted assembly is mounted on the motorcycle, each insert can be mounted on and removed from the sidewall of the tyre without removing the mounted assembly from the motorcycle.
Using the set according to the invention, it is thus possible to envisage straight inserts that do not individually form an angular sector of a ring but the assembly of which with each other can define a ring in the shape of a polygon.
Preferably, the number of inserts in the set ranges from 2 to 10, more preferably from 2 to 6.
In one embodiment, a set is used in which, the angular sector of each insert being substantially equal to 360° N, with N≥2, N preferably ranging from 2 to 10, N more preferably ranging from 2 to 6, the inserts in the set fully form a discontinuous ring when the inserts are arranged circumferentially adjacent to and in contact with each other.
In this embodiment, the inserts in the set are suitable for being fastened to the same sidewall and fully form a ring that is discontinuous at a plurality of points. Each insert only forms a portion of the ring. In a variant of this embodiment, a plurality of inserts of different colours and/or appearance textures can be used in order to form all or part of the ring and optimally customize the tyre.
In this embodiment, optionally and advantageously, each insert comprises first and second circumferential ends, and each first and second circumferential end respectively bears first and second complementary means for locking each first and second circumferential end to each other between:
In a similar manner to the embodiment described above, the locking means make it possible to ensure that each insert is held in its locked position with an adjacent insert and thus contribute to the durable fastening of the inserts to the sidewall.
In this embodiment, as a variant, each first and second circumferential end of each insert has a tapered profile that complements each second and first circumferential end respectively of an insert comprising identical first and second circumferential ends, in at least part of an overlapping region between the first and second ends of the inserts.
In another embodiment, a set is used in which, the angular sector of each insert being substantially equal to (360°—A)/N with N≥2 and A ranging from 10° to 330°, each insert is circumferentially at a distance from the two inserts adjacent to it when the inserts are circumferentially evenly distributed relative to each other.
In this embodiment, the insert can be used within a set of a plurality of inserts, the inserts in this set being suitable for being fastened to the same sidewall and form only one portion of the ring. The inserts can be separated two by two by an uncovered angular sector of the sidewall. The sum of the angles of the uncovered angular sectors of the sidewall is equal to A°.
The invention also relates to an assembly of a motorcycle tyre and at least one insert for a sidewall of the tyre, the or each insert being removably fastened to the sidewall, the or each sidewall insert comprising two free end edges arranged so that, when the tyre is mounted on a mounting support in order to form a mounted assembly and when the mounted assembly is mounted on the motorcycle, the insert can be mounted on and removed from the sidewall of the tyre without removing the mounted assembly from the motorcycle.
In one embodiment, the assembly comprises a single sidewall insert removably fastened to the sidewall, the sidewall insert forming an angular sector of aring, the angular sector ranging from 330° to 380°, preferably from 350° to 370°, and more preferably being substantially equal to 360°.
In one embodiment comprising N≥2 inserts, the angular sector of each insert being substantially equal to 360°/N, N preferably ranging from 2 to 10, N more preferably ranging from 2 to 6, the sidewall comprises N portions arranged circumferentially adjacent to each other, each of the N inserts interacting with each portion of the sidewall arranged circumferentially adjacent to each other so that they fully form a discontinuous ring.
In another embodiment comprising N≥2 inserts, the angular sector of each insert being substantially equal to (360°—A)/N with A ranging from 10° to 330°, the sidewall comprises:
Preferably, in this other embodiment, each uncovered portion of the sidewall is incapable of interacting with each of the N inserts.
The invention further relates to a method for mounting an insert on a sidewall of a motorcycle tyre, the insert being capable of being removably fastened to the sidewall of the motorcycle tyre, the sidewall insert forming an angular sector of a ring, the angular sector ranging from 330° to 380°, preferably from 350° to 370°, and more preferably being substantially equal to 360°, the insert comprising two free end edges, in which method:
The invention finally relates to a method for mounting a plurality of inserts on a sidewall of a motorcycle tyre, each insert being capable of being removably fastened to the sidewall of the motorcycle tyre, the sidewall insert forming an angular sector of a ring and comprising two free end edges, the angular sector of each insert being substantially equal to 360°/N with N≥2, N preferably ranging from 2 to 10, N more preferably ranging from 2 to 6, or the angular sector of each insert being substantially equal to (360°—A)/N with N≥2 and A ranging from 10° to 330°, in which method:
These two methods according to the invention can be implemented when the mounted assembly is mounted on the motorcycle and also when the mounted assembly is removed from the motorcycle.
The invention and its advantages will be easily understood in the light of the detailed description and the non-limiting exemplary embodiments which follow, and from the following figures, which relate to these examples and in which:
A frame of reference X, Y, Z corresponding respectively to the usual axial (Y), radial (Z) and circumferential (X) directions of a tyre is shown in the figures relating to the tyre.
With reference to
The tyre 12 comprises a crown 20 comprising a tread 22 suitable for coming into contact with the ground when the tyre is running. The tyre 12 also comprises a sealing layer 24 for sealing against an inflation gas being suitable for defining a closed internal cavity with the mounting support 14 once the tyre 12 has been mounted on the mounting support 14. The tyre 12 comprises two sidewalls 26 that extend the crown 20 radially inwards. The tyre 12 also has two beads 28 radially inside the sidewalls 26. Each sidewall 26 connects each bead 28 to the crown 20.
As illustrated in
With reference to
The insert 16 comprises removable means 48 for fastening the insert 16 to the sidewall 26. These removable fastening means 48 comprise means 50 for fastening the insert 16 to the sidewall 26 through reversible elastic clipping. The means 50 for fastening through reversible elastic clipping here comprise two fastening tabs 52, 54 borne by the bearing face 46. The insert in
The sidewall 26 of the tyre 12 comprises fastening means that complement the removable fastening means 48 of the insert 15. The complementary fastening means formed in the tyre will preferably be positioned sufficiently far away from the bead to ensure that these complementary fastening means do not catch in the rim flange when the tyre 12 is mounted on the mounting support 14.
The insert 16 is formed from a through-dyed monolithic material. Here, the monolithic material comprises a thermoplastic polymeric material, here polypropylene.
As shown in
During the method for mounting the insert 16 on the sidewall 26, a step of passing the insert 16 around the fork arm 56 or the hub 58 is carried out.
To this end, as shown in
As shown in
Of course, each first and second free end edge 36, 38 can be simultaneously axially offset and circumferentially separated.
Once the step of passing the insert 16 has been carried out, the insert 16 is removably fastened to the sidewall 26.
An assembly according to a second embodiment will now be described with reference to
With reference to
Each visible face of each insert 161, 162 is monochrome and has a single appearance texture. Each visible face of each insert 163, 164 is polychrome and has a single appearance texture, here the same appearance texture as the visible faces of the inserts 161, 162. Here, the inserts 161, 162 are identical so that their respective visible faces are the same single first colour. The inserts 163, 164 are identical so that their respective visible faces are the same colours.
Unlike the insert according to the first embodiment, the angular sector of each insert 161, 162, 163, 164 is substantially equal to 360°/N with N=4 here, that is, substantially equal to 900.
With reference to
In this second embodiment, during the method for mounting the inserts 161, 162, 163, 164 on the sidewall 26, a step of passing each insert 161, 162, 163, 164 around the fork arm 56 or the hub 58 is carried out.
Here, each insert 161, 162, 163, 164 is such that there is sufficient space between each free end edge to allow each insert 161, 162, 163, 164 to pass around the fork arm or the hub of the mounted assembly without moving one free end edge relative to the other.
The fork arm or the hub of the mounted assembly is thus simply passed into the space between each free end edge.
Each insert 161, 162, 163, 164 is then removably fastened to the sidewall 26.
An assembly according to a third embodiment will now be described with reference to
With reference to
Each covered portion 261, 262, 263, 264 is circumferentially adjacent to and arranged between two uncovered portions 265, 266, 267, 268. Here, each uncovered portion 265, 266, 267, 268 is incapable of interacting with each of the inserts 161, 162, 163, 164.
Unlike the inserts of the second embodiment, the angular sector of each insert 161, 162, 163, 164 is substantially equal to (360°—A)/N, with N≥2 and A ranging from 10° to 330°. In this instance, N=4 and A=180°, so that the angular sector of each insert 161, 162, 163, 164 is equal to 45°.
Unlike the inserts of the second embodiment, when the inserts 161, 162, 163, 164 in the set 17 are circumferentially evenly distributed relative to each other, whether on a tyre sidewall as shown in
An assembly according to a fourth embodiment will now be described with reference to
Unlike in the assembly of the third embodiment, each uncovered portion 265, 266, 267, 268 is capable of interacting with each of the inserts 161, 162, 163, 164. The user can thus position the inserts 161, 162, 163, 164 as they see fit, without being dependent on prepositioned portions on the sidewall of the tyre.
An assembly according to a fifth embodiment will now be described with reference to
Unlike the previous embodiments, the means 50 for fastening the insert 16 to the sidewall 26 of the tyre 12 through reversible elastic clipping comprise two fastening tabs 52, 54, each tab 52, 54 being borne by each radially inner and outer edge 40, 42 of the insert 16.
An insert according to a fifth embodiment will now be described with reference to
Unlike the insert of the first embodiment, the visible face 44 is polychrome and has a single appearance texture. In this instance, the visible face 44 comprises first portions 441 having two different colours and second portions 442 having the same single colour. The texture is the same on the first and second portions 441, 442.
An insert according to a sixth embodiment will now be described with reference to
Unlike the insert of the first embodiment, the insert 16 comprises a first part 13 formed from a first monolithic material and intended to be visible when the insert is fastened to the sidewall of the tyre. The insert 16 comprises a second part 15 formed from a second monolithic material different from the first monolithic material and comprising the means 50 for fastening through reversible elastic clipping. Here, the first monolithic material comprises a polymeric material, here polypropylene, and the second monolithic material is metallic, here steel.
An insert according to a seventh embodiment will now be described with reference to
Here, each first and second circumferential end 32, 34 bears complementary means 66, 67 for locking each first and second circumferential end 32, 34 to each other between:
Here, the complementary locking means 66, 67 comprise means for locking through reversible elastic clipping comprising a male tab 68 borne by the circumferential end 32 and a complementary recess 70 made in the circumferential end 34.
When the insert 16 is mounted on the tyre 12, the locking means 66, 67 are in an overlapping region 71 that is not taken into account for determining the angular sector, which is determined on the basis of the two free end edges 36, 38.
In a variant of the insert in
A set of a plurality of inserts according to a third embodiment will now be described with reference to
Unlike the set according to the first embodiment illustrated in
An insert according to eighth and ninth embodiments will now be described with reference to
In the eighth embodiment in
In the ninth embodiment in
It will be noted that variants of the eighth and ninth embodiments can be envisaged in which a set of a plurality of inserts following a straight curve (for the eighth embodiment) or an arc of a circle (for the ninth embodiment) makes it possible, once the inserts form the set, to form a ring that is discontinuous at a plurality of points.
An assembly according to a sixth embodiment will now be described with reference to
The assembly 18 comprises a first insert 161 and a second insert 162. The first insert 161 forms an angular sector of a circular ring substantially equal to (360°—A)/N with N≥2 and A ranging from 10° to 330°. Here, N=8 and A=160°, so that the angular sector of first insert is substantially equal to 25°. The second insert 162 forms an angular sector of a circular rin g ranging from 330° to 380° and here equal to 335°. The set of first and second inserts 161, 162 forms a ring 30 that is discontinuous at two points. In this embodiment, during the mounting method, each first and second insert 161, 162 being such that there is sufficient space between each free end edge 36, 38 to allow each first and second insert 161, 162 to pass around the fork arm 56, the branch of the swing arm or the hub 58 of the mounted assembly 10 without moving one free end edge 36, 38 relative to the other, thefork arm 56, the branch of the swing arm or the hub 58 of the mounted assembly 10 is passed into the space between each free end edge 36, 38.
The invention is not limited to the embodiments described above.
The different embodiments described above can be combined, and in particular the embodiments in
The features of the means for fastening the insert in
Although the figures only illustrate a single sidewall of the tyre, the invention can obviously be used on both sidewalls of the tyre.
Finally, according to the invention, the invention can be used on a mounted assembly intended to be mounted or mounted on a branch of a swing arm of a motorcycle.
| Number | Date | Country | Kind |
|---|---|---|---|
| FR2102041 | Mar 2021 | FR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/FR2022/050361 | 3/1/2022 | WO |
