Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
  • B60C23/02—Signalling devices actuated by tyre pressure
  • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
  • B60C23/0491—Constructional details of means for attaching the control device
  • B60C23/0493—Constructional details of means for attaching the control device for attachment on the tyre
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
  • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
  • F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
  • B29D30/00—Producing pneumatic or solid tyres or parts thereof
  • B29D30/0061—Accessories, details or auxiliary operations not otherwise provided for
  • B29D2030/0072—Attaching fasteners to tyres, e.g. patches, in order to connect devices to tyres
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T152/00—Resilient tires and wheels
  • Y10T152/10—Tires, resilient
  • Y10T152/10495—Pneumatic tire or inner tube
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T24/00—Buckles, buttons, clasps, etc.
  • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
  • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
  • Y10T24/45262—Pin, post and receiver

Definitions

• the invention relates to the attachment of a module, in particular electronic, such as a pressure sensor, to a wall of a tire. It relates more specifically to a support and an insert for fixing such a module. It also relates to a tire equipped with such a mounting bracket.
• More and more motor vehicles have, for security purposes, surveillance systems comprising electronic modules and / or sensors mounted on each of the wheels of the vehicle, dedicated to the measurement of parameters such as pressure or temperature of the vehicles. wheel tires, and intended to inform the driver of any abnormal variation of the measured parameter.
• EP 1 385 710 discloses a device for fixing an electronic monitoring module on a tire.
• This device comprises a plurality of plasters or supports ("patch") of rubber mix with rigid inserts for receiving a screw.
• the electronic monitoring module intended to be fixed by screwing is provided with side tabs pierced through which the screws are arranged.
• This device is complex, expensive to perform and unreliable, mainly because of too high fixation rigidity.
• Document US Pat. No. 7,009,506 describes a system for fixing an electronic module comprising a support ("patch") presented according to various embodiments allowing removable fasteners.
• the support comprises a housing or insert provided with a spherical cavity partially open for insertion of the module. Such a cavity imposes a very particular form on the electronic module. Moreover, maintaining only by tightening may be insufficient in case of strong stress, as is often the case in driving.
• the insert comprises a portion internal threaded.
• the electronic module is either entirely or very largely held in the insert. This requires a large insert. This results in a very strong mechanical stress of the module, which undergoes all the constraints to which the support is subjected. Given the severe conditions of rolling that must support the tires, this type of fixation is too restrictive for recent technology modules, which are lightweight, compact, and not constrained to excessive mechanical stresses.
• the invention is in particular to provide a method of attachment that allows a better endurance of the assembly on the surface of a tire. It also aims to provide a method of fixing for the installation and easy and quick removal of the electronic module, whether for maintenance or replacement.
• the object of the invention is a support for fixing a module to a wall of a tire, comprising a substantially flexible body of substantially elongate shape, said body comprising at least one connecting surface capable of being substantially permanently laid against a wall of a tire, a second free surface opposite to the connecting surface and at least one substantially cylindrical housing, of axis normal to the second free surface of the body and open on this second surface free, characterized in that the housing comprises a first substantially cylindrical portion extended by a substantially cylindrical chamber coaxial with the first portion and of greater diameter than the diameter of the first portion of the housing.
• This attachment support has the essential feature of comprising at least one mounting housing of an insert for cooperating with an assembly element for securing an electronic module.
• the insert has a geometry identical or similar to that of nails intended to enhance the grip of tires on snowy or icy ground. These nails are usually fixed by insertion in housings provided for this purpose in the tread of the tires. The shape of the housings and nails is adapted to provide excellent durability of nails in their homes.
• the supports and inserts of the present invention thus have the advantage of being assembled very easily by insertion with very common tools and to offer excellent durability of the electronic modules thus fixed.
• a mounting bracket makes it possible to produce a very good decoupling of the stresses usually encountered between the wall of the tire and the support, which are flexible, and the module, which is more rigid. It also allows reuse of modules.
• the fixing support consists mainly of rubbery materials and the bonding surface comprises an adhesive.
• the support comprises a peripheral edge delimited by a junction surface between the upper and connecting surfaces converging towards their junction surface at an angle ( ⁇ ) of between 9 and 15 degrees, and more. especially between 10 and 12 degrees.
• ⁇ angle
• the angle of the edges of the support is a sensitive parameter to take into account for the attachment of the support to the tire is durable. Indeed, if this angle is less than 9 degrees, folds may appear at the edge of the support because it is difficult to flatten correctly its peripheral edge. This case is referred to as "scalling”. If this angle is greater than 15 degrees, the peripheral edge of the support is too rigid. It then creates too much stress on the wall of the tire, which can cause breakage or detachment of the support while driving.
• the invention also provides a tire comprising a support as previously presented.
• the 10% elongation modulus of the rubbery mixture of the support bonding surface is preferably at most equal to the 10% elongation modulus of the wall portion of the tire on which the support is fixed.
• the support may further comprise a bonding mixture layer, disposed on the connecting surface, without overflowing to the right of the peripheral edge of the support.
• a bonding layer of unvulcanized bonding mixture is then placed on the bonding surface for bonding between the surface of the tire and the bonding surface. of the support.
• the thickness of this bonding mixture layer is of the order of 0.3 mm.
• the support assembly and the bonding mixture layer are cut out, for example with a punch.
• the cutting surface of the bonding mixture must be exactly in line with the cutting surface of the support cord. This helps to avoid after - AT -
• Another object of the invention is a fixing insert cooperating with the previous support, comprising an elongate cylindrical body surmounted by a fixing head of substantially cylindrical shape and of diameter greater than the diameter of the cylindrical body, said insert being adapted for mounting insertion into a housing of said support provided for this purpose.
• the fixing insert advantageously comprises, opposite the fixing head, a cylindrical opening intended to cooperate with an assembly element to fix a particular electronic module.
• the assembly element can cooperate with the insert by screwing, clipping, gluing, snapping to force, magnetism or snapping.
• the axial cylindrical opening is provided with an axial internal thread and the assembly element is a screw.
• the ratio between the outside diameter of the fixing head ⁇ and the maximum outside diameter of the cylindrical body of the insert ⁇ is between 1.1 and 1.3.
• the cylindrical body of the insert may also include a lower diameter zone adjacent to the fixing head.
• the invention also relates to a fixing assembly of a module comprising a fixing support and an insert as described.
• FIG. 1 is a perspective view of a support according to the invention
• - Figure 2 is a sectional view of a central portion of the support of Figure 1 along the plane II-II of Figure 1;
• FIG. 3 is a view similar to that of Figure 2, with an insert disposed in one of the housing of the support;
• Figure 4 is a view similar to that of Figure 2, with a second embodiment of insert disposed in one of the housing of the support;
• FIG. 5 shows a sectional view of a larger portion of the support of Figure 1, along the plane II-II of Figure 1, with two inserts and an electronic module being assembled by screwing;
• FIG. 6 illustrates an electronic module disposed against a wall of a tire by means of a support and an insert in accordance with the objects of the invention;
• FIG. 7 shows an enlargement sectional view of a first peripheral edge embodiment of a support
• Figures 8, 9 and 10 are sectional enlargement views of three peripheral edge embodiments of a carrier with a bonding rubber layer;
• Elasticity modulus of a gum or rubber mix means a secant modulus of extension at 10% of deformation and at room temperature or specified, the measurement is carried out after a first cycle of accommodation up to at 10% deformation:
• FIG. 1 shows a perspective view of a mounting bracket 10 according to the invention.
• the body 11 consists of a body 11 substantially flat and elongated. On a first face, there is provided a connecting surface 26, substantially flat and uniform, intended to cooperate with the inner wall of the tire, for a permanent fixation preferably. To facilitate the placement and attachment of the assembly, this surface may be provided with an adhesive adapted to rubbery materials. According to another embodiment, the surface may also be provided with a bonding mixture layer 44, as described below.
• the body 11 also comprises a second free surface 28, opposite the surface 26.
• the support comprises at least one housing 20.
• four housings 20 are provided to properly distribute the holding force for an electronic module of rectangular shape, corresponding substantially to the periphery of the support .
• the number, arrangement, and spacing provided between the housings vary according to the embodiments, depending on several parameters, such as the type and number of assembly members 50 used, the surface and the shape of the housing. module to be fixed, the type of use envisaged for tires (aircraft, passenger vehicle, agricultural vehicle or heavy truck, industrial vehicle, etc.), the expected fixing time, etc.
• the housings 20 are advantageously provided in portions of the body 11 whose thickness is greater relative to the rest of the support. Between these portions, tapered passages 12 reduce the mass of the support and adjust the desired level of flexibility.
• the support comprises a peripheral edge 40 delimited by the junction line 41 between the connecting surface 26 and a upper surface 42.
• the junction line 41 may not be zero thickness but have a small thickness, of the order of 0.1 to 0, 2 mm. In this case, it is referred to as a junction surface 41.
• the two surfaces 26 and 42 converge towards the junction line 41 and form between them, near the line 41, an alpha angle of between 9 and 15 degrees, and preferably between 10 and 12 degrees.
• the angle alpha between the two surfaces 26 and 42 is between 10 and 12 degrees in an area of the peripheral edge 40 extending to a distance d of about 7 mm from the junction line. 41.
• Figures 8, 9 and 10 show in section enlargements of three embodiments of the peripheral edge 40. In these three figures a bonding mixture layer 44 is shown. In Figure 8, the two surfaces 26 and 42 meet to form a junction line 41, that is to say a junction area 41 of zero thickness.
• the peripheral edge 40 is defined by a junction surface 41 normal to the surface 26 and a thickness of the order of 0.1 to 0.2 mm.
• the peripheral edge 40 comprises a bead 47 of rectangular section and which extends over a distance between 0 (as in Figure 8) and of the order of 1.5 mm.
• the presence of this bead 47 and the joining surface 41 facilitates the venting of the molds for manufacturing the supports. It is also possible to use vents for example in other places and to keep a geometry as illustrated in FIG.
• FIG. 2 shows a sectional view of a portion of the fixing bracket of Figure 1, in particular a portion in which a housing 20 is provided.
• the housing comprises an opening on the opposite side to the connecting surface 26 or on the side of the free surface 28.
• the housing comprises a first substantially cylindrical portion 22 of axis normal to the free surface 28 and which extends into the support towards the connecting surface 26 by a chamber 21 of substantially cylindrical shape and coaxial with the first portion and greater in diameter than the diameter of the first portion of the housing.
• This housing 20 is provided to receive a fixing insert 30, 35, as shown in Figures 3 and 4.
• the insert 30 comprises an elongated cylindrical body 31, surmounted by a fastening head or flange 32 This fixing head serves to lock the insert 30 in position when it has been forced into a housing 20 of a support 10.
• the attachment head 32 has a diameter ⁇ greater than the diameter ⁇ of the portion cylindrical 31 adjacent the adjacent portion of the body, to provide this clamping holding effect when the insert is in position in the corresponding housing of the support.
• the ratio ⁇ / ⁇ is preferably between 1.1 and 1.3.
• the cylindrical body 31 comprises a cylindrical bore 34 open on the opposite side to the fixing head 32. This bore 34 is intended to cooperate with an assembly element for fixing the electronic module.
• the insert 30 may be made of the same materials as an adhesion nail such as a metal such as steel or aluminum, it may also consist entirely or partially of plastic material.
• FIG. 4 shows a second embodiment of the insert 35.
• the substantially cylindrical body 31 has a thinned area 36, of smaller diameter than the remainder of the cylindrical body 31, disposed adjacent to the fixing head 32. This thinning enhances the effectiveness of the anchoring of the insert in a housing 20. It also has a foot 33, disposed on the opposite side to the fixing head and which is arranged as a thinned extension of the body.
• the body 11 of the support and the insert are configured so that the foot 33 protrudes from the body, in order to provide support for the electronic module 60, as shown in FIG. 5. This arrangement makes it possible to provide support for the electronic module 60, as illustrated in FIG. to space the module 60 of the body 11, at least 1 mm.
• the inserts 30 are provided to cooperate with an assembly member 50, further cooperating with the electronic module 60 whose fixing must be ensured.
• the connecting members 50 are screws.
• the screws are provided in such a way as to keep the module 60 bearing against the feet 33 of the inserts 35: the head of the screw rests on the outside of the module, the rod of the screw being held in the cylindrical opening 34 by a internal thread 37.
• Figure 6 shows an electronic module attached to the inner wall 101 of a tire 100 by means of a support and inserts according to the invention.
• the peripheral edge 40 of the support 10 on which the module 60 is fixed we can see the peripheral edge 40 of the support 10 on which the module 60 is fixed.
• the assembly is positioned in the lower portion of the sidewall of the tire. This position, as well as the orientation of the whole, may vary depending on the implementation.
• the supports 10 are preferably made of a single rubber mix. This facilitates their realization.
• This mixture has an elongation modulus at 10% at most equal to that of the wall of the tire against which the support is intended to be fixed. In other words, the support is more flexible than the adjacent tire mixture.
• a mixture will be chosen for the rubber mix of the support, the elongation modulus of which is at plus 2.2 MPa at 65 ° C.
• the modulus of the mixture used respects this limit value throughout the range of temperatures of the rolling tire, typically between 0 and 80 degrees Celsius.
• the mixture may be based on natural and / or synthetic rubber.
• the supports consist of several layers of rubber compounds.
• the rubbery mixture of the bonding surface has a modulus at most equal to that of the mixture of the wall of the tire.
• the invention is not limited to the previously described examples.
• the number of inserts and connecting elements can also vary according to the embodiments, in particular according to the shape and dimensions of the electronic module.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Tires In General (AREA)
• Casings For Electric Apparatus (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40933311

Family Applications (1)

Country Status (6)

Families Citing this family (15)

Family Cites Families (23)

• 2009
  • 2009-01-09 FR FR0950101A patent/FR2940930B1/fr not_active Expired - Fee Related
• 2010
  • 2010-01-08 US US13/143,792 patent/US8863570B2/en not_active Expired - Fee Related
  • 2010-01-08 JP JP2011544871A patent/JP2012514557A/ja not_active Withdrawn
  • 2010-01-08 CN CN201080004146.3A patent/CN102271932A/zh active Pending
  • 2010-01-08 EP EP10700116A patent/EP2385905A1/de not_active Withdrawn
  • 2010-01-08 WO PCT/EP2010/050154 patent/WO2010079215A1/fr active Application Filing
• 2014
  • 2014-09-10 US US14/482,108 patent/US20140373991A1/en not_active Abandoned

Non-Patent Citations (1)

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