SK7486Y1 - Removable tire tread - Google Patents

Abstract

The removable tread is manufactured as a ring-shaped covering with a tread pattern on the outer surface and a structure similar to the pneumatic tyre structure. At the same time the ring-shaped covering has an internal diameter essentially equal to the outer diameter of the pneumatic tyre, radial thickness within the 0.1-2.0 range of the tyre thickness in the cap area, and width lying within 0.03 - 1.0 range of the pneumatic tyre cap width.

Description

This utility model relates to tire treads and a more specifically removable tire tread that can be used as a tire tread to be replaced on vehicles of different categories and different load capacities, depending on road conditions and vehicle operating conditions.

BACKGROUND OF THE INVENTION

Especially important is the development of special accessories designed to improve the performance characteristics of summer or sports or wet or other types of tires fitted to vehicles in warm climate countries when driving on snow or ice-covered roads. In such countries, for example in most European countries, with the exception of Northern Europe, winter tires are usually not used, as this would not be economically feasible.

This problem is particularly acute in freight transport, for which winter tires are not used, because they have a very high price of thousands of euros. Consequently, the use of winter tires is not economical. The same situation is with sports cars. In extreme weather conditions, sports cars become virtually uncontrolled.

Along with the problem of designing accessories for improved tire characteristics in winter, there is the problem of developing an accessory that would be able to protect winter tires from tread wear during short-term use at cool ambient air temperatures, because during this period winter tires are seriously worn .

Another problem is the construction of removable treads that attach to worn tire treads to retread.

Despite the diversity of devices, each of which serves to solve one of the above-mentioned problems, there is no information about solving all these tasks in one technical construction. In practice, such a technical solution should be of simple construction, low cost and easy to assemble and dismantle on the road.

There is a removable tire tread (CN 201287591 Y) in the form of a removable tread which has a tread pattern on the outer surface and a structure similar to the structure of the tire and allows attachment to the tire crown. The width of the removable tread is equal to the width of the tire crown and the tread pattern of the removable tread corresponds to the conditions of use of the tire. However, at the same time attaching the removable tread to the tire is provided by vulcanization, which creates a perfect connection between the annular removable tread and the tire.

The known removable tread is designed to recover a worn tire tread and cannot be dismantled thereafter. The term removable tread is understood to replace a worn tire tread.

The assembly of the disclosed removable tread, designed to recover a worn tread, is accomplished by cutting the worn tread, installing the removable tread on the track, and vulcanizing the tire with the removable tread until a perfect bond exists between the removable tread and the tire. The assembly of the removable tread is labor-intensive and can only be carried out by an indoor expert.

The removable tread described above becomes substantially a renewed tread after being mounted on the tire; in this case, the tire acquires the characteristics of a summer, winter or all-season tire depending on the removable tread fitted. A motorist who uses retreaded tires faces a common task for all road users - how to connect the essential characteristics of vehicle tires depending on climatic conditions and road conditions.

To solve this problem, additional accessories must be installed on retreaded tires that are set to specific road and climatic conditions that include additional expenses.

There is another removable tire tread (GB 2061201) having a base made of an elastic material, e.g. a rubber which is firmly fixed to the skirt, made of an elastic material with anti-slip elements, for example with spikes. The inner diameter of the casing is approximately one third smaller than the overall diameter of the tire and the rigid attachment of the rim to the casing is provided by vulcanization. The removable tread is designed to cover the crown and the main part of the tire sidewalls and has reinforced edges that make the removable cover durable.

The removable tread described herein is practically a skid resistant device and is designed to increase tire traction on snow and ice-covered roads.

The assembly of the known removable tread to the tire is carried out at normal tire pressure by stretching the elastic cover and wrapping around the crown and part of the sidewall of the tire. Fitting this tire is a labor-intensive process that requires special equipment or great physical strength. This is pre2

This means that at negative temperatures, the elastic cover becomes rigid and is very difficult to stretch to fully fit the tire.

The described design of the removable tread, just like the removable tread described above, has dimensions comparable to that of a tire, making it difficult to transport a set of such treads in the trunk of a car and restricting the sphere of use of such a tread.

The essence of the technical solution

The utility model aims to solve the task of providing a removable tread for a tire with a structure that would simplify its construction and reuse the removable tread without fastening devices and allow its fast and easy assembly and disassembly.

This object was solved as follows: in a removable tire tread manufactured as an annular cover with a tread pattern on the outer surface and a structure similar to a tire structure and which can be attached to a tire crown according to a utility model, the removable tread in the form of an annular cover has substantially equal to the overall diameter of the tire, a radial thickness in the range of 0.1 2.0 of the tire thickness in the crown region and a width in the range of 0.03 - 1.0 of the crown width of the tire. The removable tread is manufactured to allow loose fit to the crown of the tire by reducing the tire pressure below atmospheric, and attaching it to the crown by increasing the tire pressure to at least the nominal value; The tread is designed to allow reuse and removal without damaging the tire and removable tread.

The removable tread is the simplest and most reliable in operation of all the described devices with similar functionality and can be reused over a long period of time. There is no need for special fasteners or vulcanization to hold the removable tread on the tire, because this removable tread in the form of an annular cover holds solely because of the tire pressure that tightly pushes the removable tread onto at least a portion of the tire. tread. Such a joint eliminates the penetration of snow, mud and water between the removable tread and the tire and can be easily mounted and removed as required.

The removable tread of the present application is compact, inexpensive and may have a sticker indicating the manufacturer, model and technical specifications. At the same time, the removable tread can be reused for several seasons and a set of four removable treads can easily be placed in the trunk of the car.

Good performance characteristics of the removable tread were observed even when relatively narrow removable treads were used compared to the crown width. In this case, under heavy load on the removable tread tire, the adhesion between the removable tread and the tire increased, leading to improved reliability of operation.

It would be advantageous if the tread on the outer surface of the removable tread corresponds to any selected tire tread.

The ability to manufacture a removable tread in multiple versions - with winter or off-road, or all-year, or summer, or sports or wet, or any other tread pattern, usually extends the field of use and gives consumers the choice of the version they need. For example, when mounting a removable tread on a summer tire, the tire acquires the characteristics of a winter tire and can be used throughout the winter. And when a removable summer tread pattern is mounted on a studded tire, for example during a marginal time, the studded tire does not wear or damage the road surface.

It should be stressed in particular that the removable tread can be used for trucks for which only summer tires are produced and which become unmanageable in winter.

In addition, the removable tread can be mounted on a worn tire tread and successfully serves a long time.

It would be useful if the removable tread had a tread pattern corresponding to the tread pattern of the winter tire on the outer surface and had anti-crawl elements vulcanized in the removable tread.

The anti-crawl elements may be in the form of spikes.

Preferably, the anti-crawl elements may be in the form of chains.

The removable tread according to this invention with anti-skid elements - spikes or chains - can be used successfully on snow or ice-covered roads, especially in the mountains where the use of tire chains is mandatory for vehicle operation.

It is preferred that the removable tread comprises at least one tire to allow mounting in at least one circumferential groove of the tire tread.

A tire mounted in the circumferential groove of the tire tread increases the adhesion between the removable tread and the tire.

SK 7486 Υ1

The removable tread of the present invention can be manufactured by modern tire manufacturing machines using available tread patterns and can carry a label including a model manufacturer and technical characteristics such as a tire label.

Removable tread assembly and disassembly can be carried out quickly and easily by one person without special equipment. For this purpose, a double-acting compressor can be used, i.e. a compressor that can pump air in and out of the tire. Such a compressor can be supplied with a removable tread or can be purchased individually.

Assembly of such a device can be done in about 5 to 10 minutes, even without removing the tire from the vehicle. When the removable tread is fitted loosely on the crown of the tire, the tire pressure should be increased to at least the nominal value, ensuring a tight pressure of the removable tread against the crown.

The technical effect of this solution is to simplify the construction of the removable tread and the possibility of its multiple use.

Another technical effect is the multifunctionality of the removable tread and the ability to adjust the vehicle tire to operating conditions.

Yet another technical effect is the possibility of easy and quick assembly and disassembly on the road without using any special equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

The utility model is described in detail in the example below, which is not an exclusive or one-off example within the scope of the present invention; reference is made to the attached images where:

Figure 1 shows a fragment of a removable tread according to the present invention mounted on a tire;

Figure 2 shows a tire during a removable tread according to the present invention; Figure 3 (a, b, c, d, e, f) shows a cross-section through alternative designs of a removable tread according to the present invention;

Figure 4 is the same as Figure 1 with anti-skid elements in the form of chains according to the present invention;

Figure 5 (a, b, c, d, e, f, g) of an alternative removable tread structure according to the present invention with anti-skid elements in the form of chains, in cross-section;

Figure 6 (a, b, c, d, e, f, g) of an alternative removable tread structure according to the present invention with spike elements in the form of spikes, in cross section.

EXAMPLES

The removable tread 1 is in the form of an annular casing (Figure 1) mounted on the tire 2. The outer surface of the removable tread 1 has a tread 3, the inner diameter of the removable tread 1 is substantially equal to the overall diameter of the tire 2 and the width b is removable at least partially. The crown 4 of the tire 2 and preferably ranges from 0.03 to 1.0 of the width of the crown 4. In the variant described, the width b of the removable tread 1 is approximately 0.6 of the crown 4 of the tire 2.

The removable tread 1 is made to allow free mounting to the crown 4 of the tire 2 by reducing the pressure in the tire 2 below atmospheric pressure and attaching it to the crown 4 by increasing the tire pressure to at least the nominal value and allowing multiple use and removal without damaging the tire 2 and Tread E As shown in Figure 1, the removable tread 1 slightly exceeds the tread 2 of the tire 2, and in this case the contact of the tire 2 with the road surface is provided with the removable tread 1 and not with the tread 2 itself.

The tread pattern 3 of the removable tread 1 may correspond to the tread pattern of the tire 2 of any construction and is chosen by the consumer depending on the anticipated tire operating conditions.

In the construction described there is shown a removable winter type tread 1 having a tread pattern 3 which is an elevated configuration formed by a plurality of lateral and longitudinal grooves 5, the combination of which forms a large number of units of blocks 6 with drain elements 7.

The drain elements 7 are of particular importance for driving on wet and snow-covered roads, which means a plurality of small slats and grooves extending circumferentially and oriented mostly perpendicular to the direction of rotation. The main function of said drain elements 7 is to draw off water on a wet road, to accumulate and retain snow in winter, allowing better traction on snow.

SK 7486 Υ1

It is apparent from the assembly removable tread 1 that the pressure in the tire 2 is reduced below atmospheric pressure and the removable tread 1 is freely placed on at least a portion of the crown 4 of the tire 2, and then the tire pressure 2 is increased to at least the nominal value. attach to tire crown 4.

Figure 2 shows the process of mounting the removable tread 1 to the tire 2 mounted on the wheel disk 8 and the figure corresponds to the moment when the pressure in the tire 2 is below atmospheric pressure. At this time, the shape of the tire 2 changes and some surfaces are compressed, so that the removable tread 1 can be laid freely on the part of the crown 4 of the tire 2. After the removable tread 1 has been placed on the crown 4, the tire pressure increases to at least the tire type 2. The removable tread 1 is tightly held on the tire 2 because of the tire pressure 2 which presses the removable tread 11 against the crown 4 of the tire 2. In this case, the tire pressure 2 should not be lower than the nominal value for the tire structure, means equal to or slightly exceeding the nominal.

Reducing the pressure below atmospheric and increasing the pressure to at least the nominal value is done by a double-acting compressor. The assembly and disassembly of the removable tread 11 can easily be carried out by one person even on the tire 2 still mounted on the vehicle. The distinguishing characteristic of this technical solution is that no special fastening devices or vulcanization are required to hold the removable tread 1 to the tire 2, since this removable tread 1 is attached exclusively by the pressure in the tire 2 which tightly pushes the removable tread 1 against the crown 4 of the tire 2. eliminates the penetration of snow, mud and water between the removable tread 11 and the tire 2.

The removable tread 1 produced according to the present invention allows reuse without damaging the tire 2 as well as the removable tread 1 itself.

The structures of the removable treads 1 mounted on the tire 2 are shown in Figure 3 (a, b, c, d, e, f). The drawings show that the construction of the removable tread 1 with the tread pattern 3 corresponds to that of the tire 2, i. j. there is an inner casing 11, 2μ cord 12, 22, respectively. The carcass liner 11, 23. The thickness of the removable tread 1 in the radial direction is 0.1 to 2.0 times the thickness of the tire 2 at the crown 4 and is determined by the type of tire on which it is proposed to mount the removable tread 1. For example, the removable tread 1 was suitable for sports cars and passenger cars, its thickness should be in the range of 0.1 to 0.4 of the tire 2 thickness to be sufficient. For trucks, the thickness of the removable tread 1 should be in the range of 1.5 to 2.0 times the tire thickness 2.

In Fig. 3 (a, b), a cross-section of a tire 2 with circumferential grooves 9 in the region of the tread edge and the width of the removable tread 1 is 0.18 to 0.35 times the width b of the crown 4 of the tire 2 and its thickness h is 0.35 - up to 0.7 times the thickness h of the crown 4 of the tire 2.

Such an option corresponds to the tire 2 of a sports or light passenger car, for which it is sufficient to use a removable tread 11 of relatively small width and height.

In Figure 3 (c, d, e) the cross-section of tire 2 is shown as an example with one, five and three circumferential grooves 9. The width of the removable tread 1 in the options (c, d, e) varies from 0.55 to 1, 0 times the crown width of 4 tires 2.

Despite the variety of tread patterns of the tire 2, close contact between the inner surface of the removable tread 1 and the crown 4 of the tire 2 is ensured due to the pressure in the tire 2.

Figure 3 (e) shows a removable tread 11 on the inner surface of which there is at least one tire 10 and two hoops 10 described as described. Such a removable tread 1 is intended to be mounted on a tire 2 whose tread has similarly located circumferential grooves 9. In this case said tires 10 fit into corresponding circumferential grooves 9 of the tire 2. Such a removable tread structure 1 increases its adhesion by the crown 4 of the tire 2. The removable tread structures 1 described above are adapted to be mounted on tires 2 of a passenger car.

Figure 3 (f) shows the cross-section of the removable tread 1 which completely covers the crown 4 of the tire 2 and the thickness h of the removable tread j. is practically equal to the thickness h of tire 2. Such a design is best adapted to be mounted on 2 truck tires.

In order to provide better traction on snow or ice-covered roads, especially in the mountains, the removable winter tread tread 1 can be supplied with anti-skid elements, for example chains 11, vulcanized onto the removable tread 1 as shown in Figure 4.

Such a tread gives the passenger car the characteristics of an off-road vehicle, allowing the car to be driven in difficult road conditions without the laborious process of fitting the chains to the wheels.

Figure 5 (a, b, c, d, e, f, g) shows the structures of the removable tread 1 with anti-skid elements in the form of chains 11. The variants shown illustrate different versions of the removable tread 1 with different number of chains 11 - from 1 to 4; depending on removable tread width 1 and operating conditions. Also, as noted above, the structures of the removable tread 11 with its different width and thickness, with and without rims 10, are shown, and the sphere of use of such removable tread structures 1 is similar to that described above.

Figure 6 (a, b, c, d, e, f, g) shows the structures of the removable tread 1 with anti-skid elements in the form of spikes 12 on vulcanized into the outer surface of the removable tread T

SK 7486 Υ1 studded tires on snow-covered roads are well known, so the detachable stud tread 1 with studs 12 mounted on a summer tire 2 undoubtedly facilitates driving in winter.

The detachable tread structures 1 described above illustrate the most common combination - a summer tread 2 with a removable tread 1 with a winter tread pattern - and are not exclusive or unique in the technical design of the utility model.

The availability of different designs of removable tread 1 - with winter, off-road or year-round, or summer, or sports or wet or any other tread tread design 1 extends the field of use to a large extent and allows the consumer to choose the design necessary for the intended driving conditions .

The removable tread 1 of the present invention is compact, inexpensive, can be manufactured with modern tire manufacturing machines, and can be used repeatedly over several seasons, and the method of mounting such a removable tread 1 allows its easy use on the road without using any special equipment.

PROTECTION REQUIREMENTS

Claims (7)

A removable tread in the form of an annular casing with a tread pattern on the outer surface and a structure similar to a tire structure that can be attached to a tire crown that the removable tread (1) has an inner diameter substantially equal to the total tire diameter (2), radial thickness in the range of 0.1 to 2.0 times the thickness of the tire (2) in the crown region (4) and a width in the range of 0.03 to 1.0 times the width of the crown (4) of the tire (2), Removable tread according to claim 1, characterized in that the tread (3) on its outer surface corresponds to the selected tread tread of the tire. Removable tread according to claim 2, characterized in that its tread (3) corresponds to that of a winter tire and is provided with vulcanized anti-skid elements on the outer surface. Removable tread according to claim 3, characterized in that the anti-skid elements are in the form of spikes (12). Removable tread according to claim 3, characterized in that the anti-skid elements are in the form of chains (11). A removable tread according to claim 1, characterized in that at least one tire (10) is mounted on the inner surface for attachment to the at least one circumferential groove (9) of the tire tread (2). A method of attaching a removable tread according to any one of claims 1 to 6 to a tire tread, comprising the steps of: reducing the pressure in the tire (2) below atmospheric, attaching the removable tread to the tread and fastening to the tread (2) by increasing tire pressure (2) to at least the nominal value. 5 drawings