DE2263370A1 - VEHICLE AIR TIRES - Google Patents

Description

Continental Gummi-Werke AG, Hanover . 2263370

Pneumatic vehicle tires

The invention relates to a rubber or rubber-like material existing pneumatic vehicle tires with undulating tire sidewalls, In particular, however, the invention relates to such tires of this type, which are preferably made of a suitable material by casting or injection molding are made in such a way that at least the tire sidewalls consist exclusively of the material in question, i.e. are free from the usual carcass with thread-like reinforcements mostly extending from bead to bead.

In the known pneumatic tires with undulating tire sidewalls run the waves or the valleys between them in the tire circumferential direction. This makes a very flexible, highly flexible one Tire sidewall created, which in turn, however, restrains the Tire zenite section in such a way that diameter changes problems cannot occur.

The invention also makes use of wave-shaped designs Tire sidewalls, however, it is based on the task of a comparatively high strength with little material expenditure to achieve.

According to the invention this is achieved in that the wave crests or Valleys run in or essentially radially to the tire and, moreover, the wave amplitude runs towards the larger diameter of the sidewall decreases, a particularly favorable embodiment consists in that the corrugation below the tire shoulders is above half the side wall can gradually lose its entirety. The largest amplitudes are therefore in the area or in the vicinity of the tire bead parts, and the Amplitudes are very small or very small close below the tire shoulders. no longer recognizable.

409826/0228

This results in a very good material for the tire: ':. With high strength, only comparatively little material is required ;;! so that the tires have a homogeneous cross-sectional area on both sides or exclusively from a certain material with waiver of. additional cork reinforcements can be produced.

Further details of the invention have been explained with reference to FIG. 7, are shown in the Ausführungsbeispic-le of the invention. F.s demonstrate:

Fig. 1 is a radial partial section through a Pneumatic vehicle tires,

Fig. 2 is a section along the line. II-II of Fig. 1,

Fig. 3 is a section along the line Ι1Ι-ΙΙΪ of Fig. 1 and

FIG. K shows a modified embodiment corresponding to the section according to FIG. 3.

The essentially U-shaped base body 1 of the pneumatic tire consists of rubber or a rubber-like plastic; The base body 1, which has the usual bead parts 2, the tire sidewalls 3 and on its outer circumference a flat central part k connecting the two tire sidewalls 3, is made by casting or injection molding and has no additional carcass-like reinforcement inserts. The material is so tough that the usual carcass reinforcements can be dispensed with, although it can also contain admixtures, e.g. in the form of fibers or thin threads, which, however, are not oriented in the sense of the usual cord threads, but are preferably arranged in a tangled layer, i.e. with the material can be processed, for example, by casting or spraying.

- 3 -409826/0228

BATH ORIGINAL

The middle part of the lower part 1 is enclosed by a tread 6 which supports the running surface 5 and which is firmly adhered to the smock part k .

Pia tire sidewalls 3 are wave-shaped according to FIG. 2, so that the waves or the raised points determined by them or the depressions between them run in or in the ficcKtlichon in the radial direction of the tire. In addition, the amplitude of the waves decreases towards the tire shoulders 7 in the Uei. ^c : e that there is no longer a wave shape or a non-corrugated circular ring surface is given. In addition, the v. ^{1 is} not extended into the bulges. 2 continued. The beads are thus made compact or as a complete ring body.

From one tire shoulder to the other tire shoulder 7 is again a corrugation is provided as can be seen from FIG. Here too the v / ellen run transversely to the tire circumference direction. The ones provided here Shafts 8 favor the connection with the tread Not only is the adhesive surface enlarged, but also a certain form fit between the smock part * f ' and the tread 6.

According to FIG. K , the surface 9 facing the tire cavity can also be flat or curved in the same direction in the region of the central part h , while the surface 10 of the central part k located on the outer circumference has a course corresponding to the corrugations 8.

The corrugations in the tire sidewalls 3 result in a sufficiently high strength in transverse, direction of the tire. Sufficient bending deformation is possible in the area of the tire shoulders 7, if this is e.g. in the area of the Ground ellipse must enter.

409826/022 8

Referring to FIG. 2, the side facing the tire cavity wall parts '1', the v / ellenfürmig gentiilteten & tires are eitenwäncle 3 in its tioncietärke greater than the wall parts außenliegeiideo Λ? .. In this way a higher Drucket ei fißkeit of the fteif enhohlraur. facing Y / nndunßsorciche achieved and a kinking of the inner wave areas largely prevented.

/, 09826/0228

_{! f! | l} _ ·: BAD ORIGINAL.

Claims (1)

Ans prüche: made of rubber or rubber-like materials, preferably in ß- odor injection-molded vehicle tires with Wave-shaped>? u tire side walls, characterized in that the Raised points determined by the corrugations or the depressions located between them in or essentially radial to the Tires run and the amplitude of the waves from the tire beads (2) decreases towards the tire shoulders (7). ?. Pneumatic vehicle tire according to Claim 1, characterized in that The Uulstgebiet (2) .wave-free as homogeneous, laterally not constricted Rings "are executed. 3 · Pneumatic vehicle tire according to claim 1, characterized in that the amplitude of the waves is gradually reduced in such a way that there are wave-free zones approximately in the area of the tire shoulders (7) result. H. Pneumatic vehicle tire according to claim 3 »characterized in that the third of the tire side walls located on the outer circumference of the tire side walls (3) is free of waves» 5. Pneumatic vehicle tire according to claim 1, characterized in that the part (middle part k) of the tire substructure (1) which is in contact with the tread (6) is also designed in an undulating manner Elevations run transversely to the circumferential direction of the tire. 6. Pneumatic vehicle tire according to claim ^, characterized in that the middle part (k) of the tire substructure (1) is wavy on the outer periphery, but is smooth and wave-free on the inner periphery (Fig. K). 409826/0228 © RlGiNAU 7. Pneumatic vehicle tire according to claim 1, characterized in that the wavelength constant or almost constant over the circumference of the ring is constant. 8. Pneumatic vehicle tire according to claim 1, characterized in that the Viandunfjcteile of the tire wall facing the Keifeiihohlraum: tcrswä'nde have a greater wall thickness.) Ζ 1 f; the parts of the walls facing away from the P.eif enhohlroura (l / aüdung at 11 and 1? £; ■ -. wet according to Fig. 2). Hanover, 1 * f. December 197?
72-72 P / 75 GD / Fr 409826/0228 _0R1G1NAL