WO2009089952A1 - Pneumatique de véhicule - Google Patents

Pneumatique de véhicule Download PDF

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Publication number
WO2009089952A1
WO2009089952A1 PCT/EP2008/065953 EP2008065953W WO2009089952A1 WO 2009089952 A1 WO2009089952 A1 WO 2009089952A1 EP 2008065953 W EP2008065953 W EP 2008065953W WO 2009089952 A1 WO2009089952 A1 WO 2009089952A1
Authority
WO
WIPO (PCT)
Prior art keywords
bead core
pneumatic vehicle
tire
vehicle tire
radial
Prior art date
Application number
PCT/EP2008/065953
Other languages
German (de)
English (en)
Inventor
Axel Binder
Jozef Deeskinazi
Frank Voit
Jean-Luc Weiss
Original Assignee
Continental Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Aktiengesellschaft filed Critical Continental Aktiengesellschaft
Publication of WO2009089952A1 publication Critical patent/WO2009089952A1/fr

Links

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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/0009—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion
    • B60C15/0027—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion with low ply turn-up, i.e. folded around the bead core and terminating at the bead core
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/04—Bead cores
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/0009—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion
    • B60C2015/009—Height of the carcass terminal portion defined in terms of a numerical value or ratio in proportion to section height

Definitions

  • the invention relates to a vehicle pneumatic tire for passenger cars with a profiled tread and with two tire sidewalls, each formed in the radially lower portion of each tire sidewall formed of wire
  • Bead core for mounting the pneumatic vehicle tire on a rim, with a carcass - in particular radial design - with its main part of a bead core in a tire sidewall radially outward through the tire sidewall through the axial extent of the tire tread into the other tire sidewall and there extends radially inward on an axial boundary side of the second bead core to below the bead core and extends radially outward with an envelope portion on the other axial boundary side of the bead core.
  • the bead core is usually formed with the largest possible axial width and the lowest possible radial height, on which a cross-sectionally triangular hard apex of hard rubber material is placed.
  • the main part of the carcass abuts the axial (towards the equatorial plane of the pneumatic vehicle tire) inside of the apex and the bead core.
  • the turnup member abuts against the axial (away from the vehicle pneumatic tire) outer side of the bead core and the apex and extends radially enough into the tire sidewall to be in abutting contact with the body of the carcass above the apex.
  • the maximum axial extent of the bead core is at most as large as the radial extent in such pneumatic vehicle tires.
  • the large axial extent of the bead core allows a secure fit of the pneumatic vehicle tire on the rim.
  • the big radial Extension of the carcass turnup part in conjunction with its return to the main part of the main part of the carcass, ensures a symmetrical tensile force introduction over the main part of the carcass and the turnup part of the carcass into the bead core during production and operation of the pneumatic vehicle tire. This avoids slipping out of the carcass under the bead core during manufacture of the pneumatic vehicle tire and undesirably high torsion of the bead core, which could lead to breakage and failure of the bead core.
  • the training requires a lot of material and costs. Effects which may occur due to splicing of the carcass in the region of the tire sidewall, such as constricting effects due to the stiffening of the carcass occurring in the splice region, in particular for carcass materials critical therefor, may have an increased effect in the large extent of the turnup portion of the carcass.
  • pneumatic vehicle tires have occasionally been proposed in which several parallel bead cores have been used in a tire bead to secure the carcass.
  • pneumatic vehicle tires have occasionally been proposed in which several parallel bead cores have been used in a tire bead to secure the carcass.
  • Such a design is known for example from EP 1705035 Al.
  • the carcass wrapped around a bead core is here additionally clamped between the parallel bead cores.
  • the total axial extension width of the total bead core formed by the individual axially juxtaposed bead cores is also greater here than the radial extent of the overall bead core formed.
  • the large width of the bead core in conjunction with the clamping action of the bead cores arranged side by side ensures the seat on the rim, an undesirable release of the carcass during manufacture and prevents failure of the entire bead core by torsion.
  • This training with multiple bead cores requires a lot of material, manufacturing and costs.
  • Reinforcements one of which is made of rubber embedded Kevlar fibers and the others are made of rubber-embedded nylon material which are radially superimposed.
  • the bead-core-like reinforcement produced in this way is larger in its radial extent than in its axial extent.
  • a small apex is additionally constructed, and above this a further, rubber-shaped part with a large radial extent.
  • the turnup portion of the carcass extends radially outward axially along both bead core-like reinforcements and the long triangular rubber body portion to then make contact with the main portion of the carcass above the long triangular rubber body portion.
  • the invention has for its object to provide a pneumatic vehicle tire for
  • Passenger cars with a profiled tread and with two tire sidewalls, each having a wire wound bead core formed in the radially lower portion of each tire sidewall for attaching the pneumatic vehicle tire to a rim comprising a carcass, especially a radial type, extending radially outwardly from the one tire core in the one tire sidewall through the tire sidewall through the axial extent of the tire tread to the other tire sidewall and extending radially inward on an axial perimeter side of the second bead core to below the bead core and extending radially outward with an envelope portion on the other axial perimeter side of the bead core the reduced cost of materials a secure fit and high durability of the bead is made possible.
  • a pneumatic vehicle tire for passenger cars with a profiled tread and two tire sidewalls each with a formed in the radially lower portion of each tire sidewall wire wound bead core for mounting the pneumatic vehicle tire on a rim, with a carcass - in particular radial design - extending with its main part of a bead core in the one tire sidewall radially outward through the tire sidewall through the axial extent of the tire tread to the other tire side wall and there radially inward on an axial boundary side of the second bead core to below the bead core and with one
  • Envelope part at the other axial boundary side of the bead core extends radially outward, according to the features of claim 1 solved, in which the wound bead core in its radial extent a maximum dimension b and in its axial extent a maximum dimension a having b> a and the Turning the carcass up to a radial position Ru extends outward, where Ru applies
  • the axially narrow and radially high bead core makes it possible that the introduced in the short carcass turnup only on one side over the main part of the carcass tensile force is insufficient to that around the narrow bead core Pulling turned envelope part in the manufacture and that no large torsional forces exert on the bead core that could cause torsional movements of the bead core, the risk of bead core failure is thus also minimized. The risk of unwanted loosening of the seat on the rim is also minimized.
  • the one usually formed between the main part of the carcass and the envelope can also be at least partially eliminated or at least more easily formed and installed together with other components, for example the tire sidewall.
  • the wound bead core has a rectangular cross section with x turns of the wound wire in the axial direction and y turns of the wound wire in the radial direction, with y> x.
  • the embodiment according to the features of claim 4 wherein the wire has a circular cross-section and applies to the number of turns x in the axial direction and y in the radial direction: y> 3x.
  • wound wire of the bead core is a rubberized steel wire.
  • FIG. 1 is a cross-sectional view of a pneumatic vehicle tire for passenger cars
  • FIG. 2 is an enlarged view of the lower tire sidewall region of FIG. 1
  • FIG. 3 is an enlarged view of the tire core of FIGS. 1 and 2.
  • Fig. 1 the structure of a pneumatic vehicle tire 1 is exemplified.
  • the pneumatic vehicle tire is formed symmetrically to the equatorial plane shown in dashed lines. For simplicity, only the right half is shown.
  • the pneumatic vehicle tire 1 is a pneumatic vehicle tire of a passenger car type, in which a carcass 3 of a radial type outside an air-impermeable inner layer 14 over the right shoulder region and the one inside a right bead region formed around a bead core 2 for attachment of the pneumatic vehicle tire 1 on a rim
  • Tire crown area to the left shoulder area, not shown, and in the left Bead region formed bead core 2 ranges to which it is placed in a conventional manner.
  • rim flange 4 and starting from the rim flange 4 starting up in the shoulder region reaching a side wall rubber material 12 is launched.
  • the carcass 3 consists in known manner of one or two superimposed layers of embedded in rubber parallel reinforcing members.
  • the strength members are conventional known strength members for use in carcasses of passenger cars.
  • the strength members are textile
  • Reinforcements such as cords of rayon, polyester or similar as for the production of carcasses known as suitable textile reinforcements.
  • the carcass 3 extends with its main part 8 from the tire crown area axially outward to the tire shoulder and from there radially inward through the side wall through to the bead core 2, on the axially inner side facing the tire equatorial side of the bead core 2 along closely to the bead core 2 to radially below the bead core 2, then radially below the bead core 2 axially outward to the axially outer side facing away from the pneumatic vehicle tire side of the bead core 2 and in extension in a folded radially outward envelope part 9 of the carcass in tight
  • the bead core 2 is a bead core wound from rubberized steel wire. As can be seen in Fig. 3, the bead core 2 in the radial direction R is spiral from an endless bead wire with y in the radial direction one above the other in touching contact wound wire turns wound up. In the axial direction A, in each case x such wire turns are arranged next to one another in touching contact with one another.
  • the bead core has a rectangular cross-section, in which the smaller base side points in the axial direction A and the larger base side in the radial direction R of the pneumatic vehicle tire.
  • the bead core 2 has a maximum extent a in the axial direction A and a maximum extent b in the radial direction R of the pneumatic vehicle tire.
  • the bead core 2 extends with its radially outer circumferential surface to a radial position R K.
  • R K the maximum radial extension Ru of the turnup part 9 of the carcass 3 and the radial position R K of the radial maximum extent of the bead core to the outside applies: (RK + 3mm)> R 11 > (R ⁇ - 3mm).
  • the vehicle pneumatic tire is formed free of apexes.
  • the rim flange 4 extends above the envelope part 9 directly above the bead core 2 in touching contact with the bead core 2 up to the main part 8 of the carcass 3.

Abstract

La présente invention concerne un pneumatique de véhicule (1) comprenant une tringle de talon (2) formée par un fil (10) enroulé, une carcasse (3) dotée d'une partie principale (8) et d'une partie rabattue (9) qui s'étend radialement vers l'extérieur, sur le côté de délimitation de la tringle de talon (2). La tringle de talon (2) enroulée présente, dans son étendue radiale, une dimension maximale b et, dans son étendue radiale, une dimension maximale a, avec b > a et la partie rabattue (9) de la carcasse (3) s'étend vers l'extérieur jusque dans une position radiale Ru, Ru correspondant à (RK + 3 mm) > Ru ≥ (RK - 3mm), RK indiquant la position radiale de l'étendue radiale maximale de la tringle de talon (2) vers l'extérieur.
PCT/EP2008/065953 2008-01-17 2008-11-21 Pneumatique de véhicule WO2009089952A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008004886.0 2008-01-17
DE102008004886A DE102008004886A1 (de) 2008-01-17 2008-01-17 Fahrzeugluftreifen

Publications (1)

Publication Number Publication Date
WO2009089952A1 true WO2009089952A1 (fr) 2009-07-23

Family

ID=40225578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/065953 WO2009089952A1 (fr) 2008-01-17 2008-11-21 Pneumatique de véhicule

Country Status (2)

Country Link
DE (1) DE102008004886A1 (fr)
WO (1) WO2009089952A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3401360A1 (fr) * 2017-05-09 2018-11-14 Continental Reifen Deutschland GmbH Pneu de véhicule

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140124118A1 (en) * 2011-06-20 2014-05-08 Bridgestone Corporation Pneumatic tire
DE202013008843U1 (de) 2013-10-04 2013-10-24 Borgwarner Inc. Lagergehäuse eines Abgasturboladers
CN104716145B (zh) 2015-03-27 2018-03-20 京东方科技集团股份有限公司 一种显示基板及其制造方法、显示装置
JP6848262B2 (ja) * 2016-08-22 2021-03-24 住友ゴム工業株式会社 空気入りタイヤ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06191238A (ja) * 1992-12-25 1994-07-12 Sumitomo Rubber Ind Ltd 乗用車用ラジアルタイヤ
EP0983876A2 (fr) * 1998-09-01 2000-03-08 Bridgestone Corporation Bandages pneumatiques
EP1088686A2 (fr) * 1999-09-30 2001-04-04 Bridgestone Corporation Bandage pneumatique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3566796B2 (ja) 1995-11-21 2004-09-15 不二精工株式会社 タイヤのビード部の補強構造
JP2005193758A (ja) 2004-01-06 2005-07-21 Yokohama Rubber Co Ltd:The 空気入りタイヤ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06191238A (ja) * 1992-12-25 1994-07-12 Sumitomo Rubber Ind Ltd 乗用車用ラジアルタイヤ
EP0983876A2 (fr) * 1998-09-01 2000-03-08 Bridgestone Corporation Bandages pneumatiques
EP1088686A2 (fr) * 1999-09-30 2001-04-04 Bridgestone Corporation Bandage pneumatique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3401360A1 (fr) * 2017-05-09 2018-11-14 Continental Reifen Deutschland GmbH Pneu de véhicule

Also Published As

Publication number Publication date
DE102008004886A1 (de) 2009-07-23

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