DE102014211173B4 - Support body for a pneumatic tire of a vehicle that can be mounted on a rim and a complete wheel with such a support body - Google Patents

Abstract

Support body (13, 23a, 23b) for a pneumatic tire (11, 21) of a vehicle that can be mounted on a rim to support a tire sidewall (16, 26) of the pneumatic tire (11, 21) to prevent the tire sidewall (16, 26) from being crushed and as a result, to prevent damage to the tire sidewall (16, 26), the support body (13, 23a, 23b) being designed to be arranged within an air chamber formed by a pneumatic tire (11, 21) mounted on a rim (12, 22) and at least a support element (14, 24) for supporting the tire sidewall (16, 26), characterized in that the support body (13, 23a, 23b) has at least one support element (14, 24) which is a bending impact wing (14, 24). , wherein the bending impact wing (14, 24) is designed such that it reacts to an applied pressure force with a “fish fin effect”.

Description

The invention relates to a support body for a pneumatic tire of a vehicle that can be mounted on a rim for supporting a tire sidewall of the pneumatic tire in order to prevent the tire sidewall from being crushed and consequently damage to the tire sidewall, the support body being designed to be arranged within a pneumatic tire mounted on a rim Air chamber is formed and has at least one support element for supporting the tire sidewall.

The invention further relates to a complete wheel with a rim, a pneumatic tire mounted on the rim and at least one support body for supporting a tire sidewall of the pneumatic tire in order to prevent the tire sidewall from being crushed and, as a result, damage to the tire sidewall, the support body being in one through the rim and the air chamber formed by the pneumatic tire is arranged.

In order to avoid crushing the tire sidewall and consequently damage to the tire sidewall in a vehicle with pneumatic tires, for example in emergency running mode or when the vehicle breaks down, i.e. in the event of a loss of air, or in a breakdown situation, i.e. in a situation in which there is a risk of a puncture There is a risk of damage to the tire sidewall as a result of the tire sidewall being crushed, for example when driving through a pothole or driving over a curb, various measures for supporting the tread or the tire sidewalls are known from the prior art.

From the DE 697 08 176 T2 , the DE 199 43 482 A1 , the US 4,248,286 A , or the DE 10 2007 004 497 A1 For example, it is known to arrange a support body within an air chamber formed by a pneumatic tire mounted on a rim, which supports the tread in the event of a breakdown in such a way that, in an emergency, continued travel over a short distance at moderate speed is possible without causing damage to the The tire sidewall is caused by crushing of the tire sidewall. Regarding the state of the art, reference is also made in particular to the DE 32 42 865 A1 and the US 5,505,241 A pointed out.

The object of the present invention is to provide an alternative support body with which improved puncture protection and improved puncture operation of a pneumatic tire that can be mounted on a rim can be achieved, as well as a complete wheel that is improved in this regard, in particular without significant disadvantages in terms of rolling comfort or rolling resistance.

This object is achieved by a support body with the features of claim 1 and by a complete wheel with the features of claim 2. Advantageous and preferred embodiments of the invention are the subject of the further claims and are explained in more detail below. The wording of the claims is incorporated into the content of the description by express reference.

A support body according to the invention is characterized in that the support body has at least one support element which is a bending flapping wing, a wing being referred to in the present case as a bending flapping wing, which, like a tail fin of a bony fish, bends against the compressive force instead of bending when a compressive force is applied to the wing to turn away from this. In other words, a bending wing in the sense of the invention is a wing that reacts to an applied pressure force with a “fish fin effect”. This fish fin effect is also referred to as the so-called Fin Ray Effect® in the prior art, particularly in publications by Evologics GmbH. Components that have the so-called “fish fin effect” are generally known from the prior art.

The bending impact wing is preferably elastically deformable in three dimensions and is in particular formed by a three-dimensional composite structure.

Particularly preferably, the bending flapping wing, like a corresponding tail fin of a bony fish, has a triangle of bending-elastic longitudinal and transverse struts, which are elastically connected to one another.

A complete wheel according to the invention is characterized in that it has a support body according to the invention, i.e. a support body with at least one support element, which is a bending impact wing.

Particularly preferably, the bending impact wing is designed and arranged within the air chamber in such a way that a “crushing force” acting on the bending impact wing, ie a force that would cause a crushing of the tire sidewall of the pneumatic tire without the support body, causes such a bending of the bending impact wing that the Tire sidewall is supported. This makes it possible to avoid damage to the pneumatic tire, in particular the formation of a crack in the area of the tire sidewall with an associated loss of air as a result of severe crushing of the tire sidewall, which occurs when driving over a sharp edge without a tire according to the invention Support bodies can come, for example when driving over curbs, potholes or small transverse steps in the road, as they often occur during road repairs. With a support body according to the invention, the robustness of air-filled tires can be significantly improved.

The support of the tire sidewall by a support body according to the invention can be effected directly, i.e. the support element or the bending impact wing directly supports the tire sidewall, or indirectly, for example via a support of the tread, i.e. in which the bending impact wing supports the tread and thereby prevents the tire from being crushed Tire sidewall prevented.

In a preferred embodiment, the support body is designed and arranged within the air chamber in such a way that at least one support element, preferably the bending impact wing, does not provide any support in a functional, assembled state of the complete wheel on a vehicle in a normal driving situation and / or in normal operation of the vehicle the tire sidewall.

In a preferred embodiment, the support body is designed and arranged within the air chamber in such a way that at least one support element, preferably the bending impact wing, in a functional, assembled state of the complete wheel on a vehicle only effects support in a breakdown situation and / or a breakdown operation.

If the tire sidewall is not supported in normal driving situations or not in normal operation, i.e. not in non-breakdown situations, but only in breakdown operation or in breakdown situations, the robustness against tire damage can even be achieved in many cases without disadvantages in terms of rolling comfort and/or Rolling resistance can be increased.

These and other features emerge not only from the claims and from the description but also from the drawings, with the individual features being implemented individually or in groups in the form of subcombinations in an embodiment of the invention and representing advantageous designs that can be protected on their own for which protection is claimed here.

The invention is further explained below using two preferred exemplary embodiments, the invention being shown schematically in the accompanying drawings. 1a shows a section of a first exemplary embodiment of a complete wheel according to the invention with a support body according to the invention in a sectional view, 1b a section of the support body according to the invention 1a in a developed representation, 2a a second embodiment of a complete wheel according to the invention with two support bodies according to the invention, also in a sectional view, and 2 B each a section of the support body according to the invention 2a in a developed representation. All of the features described in more detail can be essential to the invention.

1a shows a section of a complete wheel 10 according to the invention of a car with a rim 12 and a pneumatic tire 11 mounted thereon in a sectional view. The pneumatic tire 11 has a tread 15 and two tire flanks 16 adjacent to the side of it and to the tread 15, via which the pneumatic tire 11 is supported on the rim 12. The pneumatic tire 11, together with the rim 12, forms an air chamber in which a support body 13 according to the invention is arranged.

In this exemplary embodiment, the support body 13 is arranged approximately halfway up an inner surface of a tire sidewall 13 and extends approximately horizontally toward the center of the rim during normal operation or during a normal driving situation. Of course, the support body 13 can alternatively and/or additionally be connected to the rim 12.

The support body 13 is designed as a circumferential ring which has a plurality of support elements 14 arranged next to one another in the form of bending flaps 14, which extend with their free end to the center of the pneumatic tire 11, the individual bending flaps 14 of the support body 13 in 1b , which shows a section of the support body 13 in an unrolled view, can be clearly seen.

If a “crushing force” F now acts on the pneumatic tire 11, in particular on the bending flaps 14 of the support body 13, such as in a breakdown situation when driving over a sharp edge or in a breakdown, i.e. when driving with insufficient air, the bending flaps 14 each bend Force F counteracts, i.e. in this case upwards in the direction of the tread 15, and thus causes the tread 15 to be supported on its inside. This indirectly provides support for the two tire flanks 16, in particular the left tire flank 16 in this illustration, to which the support body 13 is connected.

This allows the tire sidewalls 16 to be effectively crushed in a simple manner in a breakdown situation and/or during breakdown operation be prevented and thus damage to the tire sidewalls 16.

In 2a A second exemplary embodiment of a complete wheel 20 according to the invention is shown with a pneumatic tire 21 mounted on a rim 22, which also has a tread 25 and two tire flanks 26 and forms an air chamber with the rim 22. In this exemplary embodiment, however, two support bodies 23a and 23b are arranged within the air chamber, with one support body 23a or 23b being connected to an inside of the tire sidewall 26.

The support bodies 23a and 23b are also each designed as circumferential rings, which have a plurality of support elements 24 arranged next to one another in the form of bending flaps 24, which extend with their free end to the center of the pneumatic tire 21, the individual bending flaps 24 of the support body in 2 B , which shows a section of the support bodies 23a and 23b in an unrolled view, can be clearly seen. In order to support the running surface 26 on the inside as large as possible, the individual bending flaps 24 are arranged offset from one another and interlocking, that is to say essentially interlocked. This means that compared to the one in the 1a and 1b In the exemplary embodiment shown, a significantly better supporting effect can be achieved.

Of course, a large number of modifications, in particular constructive modifications, to the exemplary embodiment explained are possible without departing from the content of the patent claims. In particular, a different arrangement, design and combination of support elements is of course possible, in particular not all support elements having to be designed as bending impact wings. According to the invention, however, at least one support element is designed as a bending impact wing, which prevents one of the two tire sidewalls from being squeezed to such an extent that the tire sidewall is damaged.

One or more support elements can in particular also be designed and arranged in such a way that an acting "squeezing force" F causes at least one support element, in particular at least one bending flap, to rest directly on one of the tire flanks and thus directly supports it, i.e. that at least one The support element is placed in a fold formed by the crushing of the tire sidewall.

reference symbol list-

10, 20

Complete bike

11, 21

tire

12, 22

rim

13, 23a, 23b

Support body

14, 24

Bending impact wing

15.25

tread

16, 26

tire sidewall

Claims (4)

Support body (13, 23a, 23b) for a pneumatic tire (11, 21) of a vehicle that can be mounted on a rim to support a tire sidewall (16, 26) of the pneumatic tire (11, 21) to prevent the tire sidewall (16, 26) from being crushed and as a result, to prevent damage to the tire sidewall (16, 26), the support body (13, 23a, 23b) being designed to be arranged within an air chamber formed by a pneumatic tire (11, 21) mounted on a rim (12, 22) and at least a support element (14, 24) for supporting the tire sidewall (16, 26), characterized in that the support body (13, 23a, 23b) has at least one support element (14, 24) which is a bending impact wing (14, 24). , wherein the bending impact wing (14, 24) is designed such that it reacts to an applied pressure force with a “fish fin effect”. Complete wheel (10, 20) with a rim (12, 22), a pneumatic tire (11, 21) mounted on the rim (12, 22) and at least one support body (13, 23a, 23b) for supporting a tire sidewall (16, 26 ) of the pneumatic tire (11, 21) in order to prevent the tire sidewall (16, 26) from being crushed and, as a result, damage to the tire sidewall (16, 26), the support body (13, 23a, 23b) being in one through the rim (12 , 22) and the air chamber formed by the pneumatic tires (11, 21), characterized in that the support body (13, 23a, 23b) is arranged Claim 1 is trained. Complete wheel (10, 20). Claim 2 , characterized in that the support body (13, 23a, 23b) is designed in such a way and is arranged within the air chamber that at least one support element (14, 24), preferably the bending impact wing (14, 24), is in a functional, assembled state of the Complete wheel (10, 20) on a vehicle in a normal driving situation and / or in normal operation of the vehicle does not provide any support for the tire sidewall (16, 26). Complete wheel (10, 20). Claim 2 or 3 , characterized in that the support body (13, 23a, 23b) is designed in such a way and is arranged within the air chamber that at least one support element (14, 24), preferably the bending impact wing (14, 24), is in a functional, assembled state of the Complete wheel (10, 20). A vehicle only supports the tire sidewall (16, 26) in a breakdown situation and / or a breakdown operation.

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