CH433033A - Tire for safety rim - Google Patents
Tire for safety rimInfo
- Publication number
- CH433033A CH433033A CH47366A CH47366A CH433033A CH 433033 A CH433033 A CH 433033A CH 47366 A CH47366 A CH 47366A CH 47366 A CH47366 A CH 47366A CH 433033 A CH433033 A CH 433033A
- Authority
- CH
- Switzerland
- Prior art keywords
- tire
- rim
- grooves
- beads
- bead
- Prior art date
Links
- 239000011324 bead Substances 0.000 claims description 17
- 230000000284 resting effect Effects 0.000 claims 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- B60C15/02—Seating or securing beads on rims
- B60C15/024—Bead contour, e.g. lips, grooves, or ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/10—Rims characterised by the form of tyre-seat or flange, e.g. corrugated
-
- 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
- B60C15/02—Seating or securing beads on rims
- B60C15/0209—Supplementary means for securing the bead
- B60C15/0226—Supplementary means for securing the bead the bead being secured by protrusions of the rim extending from the bead seat, e.g. hump or serrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Description
Pneumatique pour jante à rebord de sécurité L'invention concerne un pneumatique pour jante à rebord intérieur de sécurité par exemple tel qu'indiqué en A sur la fig. 1. Ce rebord en saillie retient le talon du pneumatique et l'empêche de se déplacer latéralement vers l'intérieur quand le pneu est soumis à un effort laté ral important ou lorsque le pneu est dégonflé.
Ce rebord présente cependant l'inconvénient de gêner la mise en place du pneu sur la jante du fait que lors du montage, le talon doit franchir ce rebord.
Pour faciliter ce montage l'invention prévoit de réa liser sur au moins un talon devant reposer sur l'aile cor respondante de la jante, des rainures assouplissant la base du talon et lui permettant de franchir plus aisément le rebord intérieur de sécurité.
L'invention est illustrée sur la fig. 1 qui montre en coupe transversale le pneumatique monté sur sa jante et sur la fig. 2 qui est une vue partielle en élévation.
Le pneumatique 1 comprend comme habituellement des bourrelets 2 renforcés par une ou plusieurs tringles inextensibles 3. Lorsque le pneu est monté sur la jante 4 les bourrelets sont appliqués par la pression de gonfle- ment contre les rebords extérieurs 5 et la face inférieure des talons de ces bourrelets repose sur les ailes 6 ou repos<B> </B> de la jante.
La surface inférieure des talons présente des rainu res transversales 7 donnant à cette surface une forme ondulée comme représenté sur la fig. 2. En position mon tée les talons du pneu prennent donc appui sur les ailes 6 de la jante par les crêtes de ces ondulations ce qui est suffisant pour assurer une bonne assise et un bon cen trage du pneu sur la jante. Toutefois, les rainures 7 assouplissent suffisamment la partie inférieure des talons pour faciliter le franchissement du rebord intérieur de sécurité A de la. jante par le talon au moment du mon tage.
Une fois monté, les nervures situées entre les rai nures 7 empêchent le déplacement latéral du bourrelet en venant buter contre le rebord A. La largeur, le pas et la profondeur de ces ondula tions sont conditionnés par les dimensions du pneumati que et par la hauteur en saillie du rebord de sécurité, et ils pourront donc varier d'un pneu à un autre. Ces rai nures sont de préférence prévues sur les deux bourrelets pour ne pas imposer un sens de montage au pneumati que mais il est évident que l'on peut n'en prévoir que sur le seul bourrelet ayant à franchir le rebord A.
D'autre part, bien que l'orientation transversale des rainures soit préférable pour faciliter la déformation de la gomme des nervures au moment du franchissement du rebord A, ces rainures pourront être disposées autrement, par exemple en biais.
L'invention intéresse plus spécialement les pneus sans chambre à air et dans ce cas les moyens habituels d'étanchéité entre le pneu et les rebords 5 de la jante et tels que les stries 8 du talon sont conservées.
Tire for a rim with a safety flange The invention relates to a tire for a rim with an internal safety flange, for example as indicated at A in FIG. 1. This protruding flange retains the bead of the tire and prevents it from moving laterally inward when the tire is subjected to a significant lateral force or when the tire is deflated.
However, this rim has the drawback of hindering the positioning of the tire on the rim due to the fact that during assembly, the bead must cross this rim.
To facilitate this mounting, the invention provides for making grooves on at least one bead which must rest on the corresponding wing of the rim, making the base of the bead more flexible and allowing it to cross the inner safety rim more easily.
The invention is illustrated in FIG. 1 which shows in cross section the tire mounted on its rim and in FIG. 2 which is a partial elevation view.
As usual, the tire 1 comprises beads 2 reinforced by one or more inextensible bead wires 3. When the tire is mounted on the rim 4 the beads are applied by the inflation pressure against the outer edges 5 and the underside of the tire beads. these beads rest on the wings 6 or rest <B> </B> of the rim.
The lower surface of the heels has transverse grooves 7 giving this surface a wavy shape as shown in FIG. 2. In the mounted position, the beads of the tire therefore rest on the flanges 6 of the rim by the crests of these undulations, which is sufficient to ensure good seating and good centering of the tire on the rim. However, the grooves 7 soften the lower part of the heels sufficiently to facilitate the crossing of the inner safety edge A of the. rim by the bead at the time of assembly.
Once mounted, the ribs located between the grooves 7 prevent the lateral displacement of the bead by abutting against the flange A. The width, pitch and depth of these corrugations are conditioned by the dimensions of the tire and by the height protruding from the safety edge, and they may therefore vary from one tire to another. These grooves are preferably provided on the two beads so as not to impose a mounting direction on the tire, but it is obvious that they can only be provided on the single bead having to cross the rim A.
On the other hand, although the transverse orientation of the grooves is preferable to facilitate the deformation of the rubber of the ribs when crossing the rim A, these grooves can be arranged otherwise, for example at an angle.
The invention relates more particularly to tubeless tires and in this case the usual sealing means between the tire and the flanges 5 of the rim and such that the grooves 8 of the bead are retained.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2001A FR1434207A (en) | 1965-01-14 | 1965-01-14 | Tire for safety rim |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH433033A true CH433033A (en) | 1967-03-31 |
Family
ID=9696570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH47366A CH433033A (en) | 1965-01-14 | 1966-01-14 | Tire for safety rim |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE675106A (en) |
| CH (1) | CH433033A (en) |
| ES (1) | ES321702A1 (en) |
| FR (1) | FR1434207A (en) |
| LU (1) | LU50260A1 (en) |
| NL (1) | NL6600375A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1209443A (en) * | 1966-11-15 | 1970-10-21 | Dunlop Company Ltd Formerly Du | Improvements in and relating to vehicle wheel assemblies |
| GB1410914A (en) * | 1971-10-02 | 1975-10-22 | Dunlop Ltd | Vehicle wheel rims |
| LU80688A1 (en) * | 1977-12-23 | 1979-04-13 | Dunlop Ltd | TIRE IMPROVEMENTS |
| WO2001025030A1 (en) * | 1999-10-06 | 2001-04-12 | The Goodyear & Tire Rubber Company | Tire with knurls in bead surface |
| US6582029B2 (en) | 2001-05-25 | 2003-06-24 | Shimano Inc. | Bicycle rim |
-
1965
- 1965-01-14 FR FR2001A patent/FR1434207A/en not_active Expired
-
1966
- 1966-01-12 NL NL6600375A patent/NL6600375A/xx unknown
- 1966-01-13 ES ES0321702A patent/ES321702A1/en not_active Expired
- 1966-01-14 BE BE675106D patent/BE675106A/fr unknown
- 1966-01-14 CH CH47366A patent/CH433033A/en unknown
- 1966-01-14 LU LU50260A patent/LU50260A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES321702A1 (en) | 1966-10-16 |
| FR1434207A (en) | 1966-04-08 |
| LU50260A1 (en) | 1966-07-14 |
| NL6600375A (en) | 1966-07-15 |
| BE675106A (en) | 1966-07-14 |
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