DE1196979B - Reinforcement insert for pneumatic tires for vehicles, in particular motor vehicles - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

B 62g

German class: 63 e- 5/01

Number: 1196 979

File number: G 2624511/63 e

Filing date: January 27, 1959

Opening day: July 15, 1965

The invention relates to a reinforcement insert for pneumatic tires for vehicles, in particular for motor vehicles, which lies between the carcass and the running rubber layer and crossed over one another arranged layers of adjacent, rubberized, tensile strength bands.

Reinforcement inserts of the aforementioned type are in the form of independently running side by side Known tapes, which in themselves from running side by side in the longitudinal direction and vulcanized together with rubber There are cords or cord fabrics. It is also known in such reinforcing tapes Cord cables or ropes made of wire or textile material in one and the same band with one another intertwine and then at least two layers of intersecting reinforcement tapes inserted into in each layer lie next to each other without crossing each other in order to balance the forces in to reach threads running parallel to each other in each layer. The cord or wire inlays can also be used are corrugated within one and the same reinforcement band.

In the case of adjacent reinforcement bands of one or more layers, the edges are of the bands are only connected by rubber, so that zones of high strength with zones of higher strength Alternate elasticity and therefore sufficient strength only through at least two superimposed Locations is achievable. As a result of these properties of at least two reinforcement layers, one can become strong or weak reinforcement effect occur, which reduces the mileage or even cause gives that a layer becomes detached. In the case of single-layer layers, it consists of strips lying next to one another a very different strength of the rubber intermediate layers and the tapes.

In relation to these known designs, the invention seeks that the necessary and one opposite the known designs even significantly increased strength of the reinforcement already in one and the same location is achieved and at the same time the protection against foreign objects is increased and road holding, Tracking and braking of the tire can be improved.

This object is achieved according to the invention in a reinforcing insert of the type mentioned at the outset achieves that the bands of the plies in the tire circumferential direction continuously with one another to form the reinforcing insert are intertwined. It has been shown that in this way the effects of the known two layers with adjacent layers within a layer and intersecting from layer to layer Reinforcement insert for pneumatic tires for vehicles, in particular motor vehicles

Applicant:

Gummiwerke Fulda G. m. B. H., Fulda

Named as inventor:
Oskar Bailly, Fulda

Tapes can be achieved with a single reinforcement insert of the same thickness. Nevertheless If necessary, they can be used in place of one consisting of continuously interwoven bands Reinforcement insert according to the invention, if necessary, two or more of these on top of one another are arranged, the braiding angles of the inserts advantageously different from one another are.

The braided strips of the reinforcement insert consist in a manner known per se from lying parallel to one another Cables, strands, wires, threads or the like made of steel or other tensile and pressure-resistant Material such as plastic, natural or synthetic fibers or the like. Which are covered by a rubber coating are united in a narrow flat band.

Pneumatic tires according to the invention are characterized by very low tread wear and good Road holding from. Despite sufficient stiffening of the tread, they are relatively flexible and resistant even on bad roads. Furthermore, the braided reinforcement inserts offer a good protection against ingress of foreign bodies. Furthermore, the wavy surfaces of the braided Reinforcement insert or layers both towards the carcass and towards the tread a much better connection than before has been achieved, which allows the tire to have a larger one Record power transmission, which is the case with tires with coarse profiles, such as those with off-road and M&S tires Find use is particularly advantageous. Due to the special type of braided ribbons used and their interdependence, local friction, especially at the crossing points of the fixed by the rubber coating and stripped from each other

509 600/137

Claims (1)

3 4 Steel cables, wires, threads or plastic strips that the individual braided strips in to the side Braided ribbons do not occur. stabilized sufficiently without being in the running direction The invention is based on the drawing of the tire damaging stiffeners arise, explained in more detail. It shows a tire of this construction being cut into F i g. 1 apart a pneumatic tire according to the invention in the 5 transverse direction (FIG. 1), then it is cross-section, recognizable that by the arrangement of one in the pointed F i g. 1 α from this an enlargement of the interlaced wickerwork a permanent reinforcement insert, winding of the braided bands (Fig. 1 a) occurs and so- F i g. 2 a section of the tire in a plan view with, in some cases, a spatial balance of forces is achieved. this omitted running rubber, io is explained using an example. Fig. 3 the endlessly braided reinforcement insert. B. is in its longitudinal for in a graphical way, unyielding direction, on the other hand he can after the Fig. 4 and 5 embodiments of the braided side and are moved slightly upwards. One adds ribbons for the reinforcement inlay and two rubberized cord layers of different thread sizes in cross-section, and at 15 angles firmly to one another, the structure is F i g. 6 to 8 examples of how the stiffener works. With tensile stress in each of the two Strengthening insert according to the invention. Thread directions there is complete intransigence, At 10, the carcass is of any construction while depending on the doubling angle in the other denotes whose thread or wire layer or layers directions of the tissue plane more or less enclose the tire feet 11 with their ends, so there is great flexibility. The Still move slightly between the carcass 10 and the arbitrarily profiling fabric web. One adds If the tire's running rubber 12 is two multiple layers on top of each other, then this structure is created Reinforcement inserts 13 are provided, each made of stiff, d. H. it now continues the upward movement len, flat, rubberized bands, which with- a resistance to it. If you take three on top of each other crossed in the circumferential direction of the tire to form a 25 mutually tension and compression-resistant wires that are connected to endless ribbon intertwined in a single-braid bond the ends are firmly connected to each other (Fig. 6) are, d. H. each braid alternately lies over and bends them, then thread 2 will move a little and and under one of the other ribbons. It can also bend thread 3 strongly, since thread 1 does not lengthen a so-called two-braid or three-braid or can (Fig. 7). In the tire this would mean: Layer 1 even the irregular weave in the interweaving 30 carries the entire tensile stress at this moment Ribbons are applied. chung, while layers 2 and 3 compress and The braiding material of the reinforcement insert 13 thus results in an even greater destructive stress is expediently made up of several, exposed side by side in parallel. other lying cables, strands, wires, threads. In the endless braided reinforcing insert or the like 14 made of steel or other tensile and compressive 35 according to the invention, there is just solid material for the tire, eg. B. plastics, natural or the desired stiffening of the tread with ge-plastic fibers od . 8th).
Volume 15 are united. The number of cables, strands, threads, wires 40 combined in one or more of the reinforcement inserts 13, the width of which in general and the like depends on the respective tire size, approximately the width of the overlying tread 12 and can vary be. So it does not correspond to, is not to a specific carcass in the drawing example F i g. 4 assumed number construction bound and bound by the angle of the. In place of several steel wire cables, carcass threads, which these form with the circumferential plane of the strands, wires, threads and the like in a braided band 45 carcass, largely independently. The latter can also consist of a solid material, preferably plastic, of solid material, preferably plastic, which is flat in cross-section and understandably can consist of rubberized approximately rectangular strips 16 of tension and pressure bands, with a sheathing 17 between the carcass 10 and the running rubber 12 from a rubber if one or more of the known layer mixture is provided (Fig. 5). 50 from parallel side by side in one direction The interweaving of the rubberized ribbons is done by running wires, threads embedded in rubber Hand or on a braiding machine under an od. The like. Be assigned. made such braiding that in scope- The subclaims have only in connection direction of the tire any desired intersection with claim 1 meaning,
angle of the tapes or their cables, strands, wires, 55 Threads or the like. Can be obtained. Appropriate patent claims: the interweaving of the bands is carried out on a braided 1. reinforcement insert for pneumatic tires for driving machine to an endless hose of for the people, especially for motor vehicles, which are between Tire size of the appropriate diameter, see casing and rubber layer and the pieces in the 60 required for the tire width of crossed layers Length are separated, which then the reinforcement of each adjacent rubberized Form insert according to the invention (Fig. 3). tensile strength bands, thereby identifying When installing several reinforcement inserts, it is evident that the bands of the layers in tire one above the other in a tire can for each insert circumferentially with one another to the another braid angle can be selected. Are interwoven by reinforcement 65, felling the saw-shaped 2nd reinforcement insert according to claim 1, which is produced during braiding, Surfaces of the braided reinforcement inserts characterized in that the braided strips of {Fig. la) with the appropriate rubber compound, reinforcement inserts are made of parallel lying cables, strands, wires, threads or the like made of steel or other tensile and pressure-resistant Material, such as plastic, natural or synthetic fibers or the like. Are made up of a rubber coating are united in a narrow flat band. 3. Pneumatic tire according to claim 1, characterized in that the braided strips of the reinforcing insert (13) made of flat, roughly rectangular in cross-section strips (16) made of tensile and pressure-resistant, flexible material, preferably Plastic, which are provided with a sheath (17) made of a rubber mixture. 4. Pneumatic tire according to claim 1 or 2 or 3, characterized in that two or more of the endless braided reinforcement inserts (13) are arranged one above the other. 5. Pneumatic tire according to claim 1 and 4, characterized in that in the case of several one above the other arranged reinforcing inserts (13), the braiding angles of the inserts are different from one another are. 6. A pneumatic tire according to claim 1, characterized in that the braided bands of the reinforcing insert (13) are interwoven in any desired bond, preferably in a single-braid bond. 7. A pneumatic tire according to claim 1, characterized in that the reinforcing insert (s) (13) or one or more of the known ones Layers of rubberized wires and threads running parallel to each other in one direction and the like. Are assigned. Considered publications:
German Auslegeschrift No. 1 043 843;
Swiss Patent No. 303 502;
French Patent No. 601131;
U.S. Patent Nos. 2,257,646, 2,258,031. 1 sheet of drawings 509 600/137 7.65 © Bundesdruckerei Berlin