DE3632683A1 - Vehicle tyre with extensible spikes - Google Patents

Vehicle tyre with extensible spikes

Info

Publication number
DE3632683A1
DE3632683A1 DE19863632683 DE3632683A DE3632683A1 DE 3632683 A1 DE3632683 A1 DE 3632683A1 DE 19863632683 DE19863632683 DE 19863632683 DE 3632683 A DE3632683 A DE 3632683A DE 3632683 A1 DE3632683 A1 DE 3632683A1
Authority
DE
Germany
Prior art keywords
spikes
tyre
ice
grip
air pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19863632683
Other languages
German (de)
Inventor
Wolfgang Dr Ing Berger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19863632683 priority Critical patent/DE3632683A1/en
Publication of DE3632683A1 publication Critical patent/DE3632683A1/en
Withdrawn legal-status Critical Current

Links

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
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/14—Anti-skid inserts, e.g. vulcanised into the tread band
    • B60C11/16—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile
    • B60C11/1606—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile retractable plug
    • B60C11/1612—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile retractable plug actuated by fluid, e.g. using fluid pressure difference

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

Vehicle tyres have different types of profile depending on the conditions of use. Particularly in winter when the tyre is operated on ice or snow, the grip of the tyre is subject to very tight limits. The use of spikes as an additional aid for improving the tyre grip on ice and snow has been banned in some regions due to considerable damage being caused to the road surfaces; in other regions, their use has been restricted to particular districts or particular periods. The use of spikes in the tyre profiles, which spikes can be extended by increasing the air pressure in the tyres, allows the grip effect between the tyre and the road to be increased under particular conditions, for example wheels spinning on ice or temporary travelling on icy roads. By letting down the air pressure to the normal amount, the spikes are retracted again due to spring effect.

Description

Fahrzeugreifen haben je nach ihrem Einsatz und Art des Fahrzeuges sehr unterschiedliche Profilarten. Sie müssen insbesondere im Winter für eine ausreichende Haftung auf Schnee oder Eis sorgen. Dazu werden die Laufflächen in grobstollige Profile zerlegt, was gerade im Schnee für eine ausreichende Traktion sorgen soll.Vehicle tires have depending on their use and type of Vehicle very different profile types. You need to especially in winter for sufficient liability Provide snow or ice. For this, the treads in coarse-tread profiles disassembled what is in the snow for should provide adequate traction.

Auf Eis geht die Haftung des Reifens sehr schnell verlo­ ren, da sich selbst grobe Profile nicht in das Eis ein­ drücken können. Dazu ist das Reifenmaterial zu weich.The grip of the tire is quickly lost on ice because even rough profiles do not penetrate the ice can press. The tire material is too soft for that.

Aus diesem Grund wurden Spike-Reifen entwickelt, bei de­ nen in den Profilstollen zusätzlich kleine Stahlnägel (Spikes) eingelassen waren, die nur um ein geringes Maß aus der Oberfläche des Profilstollens herausragten.For this reason, spike tires have been developed small steel nails in the tread lugs (Spikes) were recessed, which were only to a small extent protruding from the surface of the tunnels.

So wirksam diese Reifen auf Eis auch waren, auf nassen oder trockenen Straßen verringerte sich die Haftung des Reifens gegenüber einem gleichen Reifen ohne Spikes er­ heblich. Außerdem waren die Schäden am Straßenbelag so groß, daß dieser Reifentyp trotz seiner unbestrittenen Vor­ teile auf Eis in den meisten Ländern verboten oder zu­ mindest in seinem Gebrauch auf wenige Gebiete oder nur kurze Zeiträume zugelassen wurde.As effective as these tires were on ice, on wet ones or dry roads reduced the liability of the Tire compared to a same tire without spikes considerable. In addition, the damage to the road surface was the same great that this type of tire despite its undisputed advantages share on ice banned or allocated in most countries at least in its use in a few areas or only was allowed for short periods.

Der Anmeldungsgegenstand soll den Gebrauch von Spikes als bestes Mittel für eine sichere Traktion der Reifen auf Eisflächen wieder ermöglichen, da er die Spikes nur kurzfristig als Notmittel einsetzt und im Normalfall wie ein üblicher Winterreifen verwendet wird.The subject of the application is intended to use spikes as the best means for safe tire traction on ice rinks again because he only spikes  used at short notice as a means of emergency and normally like a common winter tire is used.

Dazu benutzt er ausfahrbare Spikes (1), die im Reifen­ profil (2) im Hülsen (3) verschieblich geführt sind. Eine Feder (4) hält den Nagel in seiner Endstellung, so daß er nicht aus dem Profilstollen herausragen kann.For this he uses extendable spikes ( 1 ) which are guided in the tire profile ( 2 ) in the sleeves ( 3 ). A spring ( 4 ) holds the nail in its end position so that it cannot protrude from the profile stud.

Der Spike (1) besitzt einen leicht gewölbten Kopf (5), über den im Reifeninnern eine luftdichte, druckfeste und elastische Folie (6) gelegt ist (Bild 1).The spike ( 1 ) has a slightly curved head ( 5 ) over which an airtight, pressure-resistant and elastic film ( 6 ) is placed inside the tire ( Fig. 1).

Wird im Reifeninnern der Luftdruck um ein bestimmtes Maß erhöht, drückt sich die Folie (6) gegen den Nagelkopf und schiebt dadurch den Spike-Nagel gegen die Kraft der Feder (4) aus dem Profil heraus (Bild 2). Mit welcher Kraft die Nägel sich nun in Eis oder Schnee eingraben können, hängt von der Kraft der Feder (4), der Größe der Berührungsfläche zwischen Folie (6) und Nagelkopf (5) und dem Luftdruck im Reifenraum ab.If the air pressure inside the tire is increased by a certain amount, the film ( 6 ) presses against the nail head and thereby pushes the spike nail out of the profile against the force of the spring ( 4 ) ( Fig. 2). The force with which the nails can now dig into ice or snow depends on the force of the spring ( 4 ), the size of the contact area between the foil ( 6 ) and the nail head ( 5 ) and the air pressure in the tire compartment.

Wird die Luft im Reifeninnern wieder auf den Normaldruck abgelassen, werden die Spike-Nägel entweder durch die Kraft der Feder (4) oder durch das Abrollen des Rades auf dem Straßenbelag wieder in den Profilstollen ge­ drückt, so daß sie mit dem Straßenbelag keine Berührung mehr haben.If the air inside the tire is released again to normal pressure, the spike nails are pressed either by the force of the spring ( 4 ) or by the rolling of the wheel on the road surface again in the tread lugs, so that they no longer come into contact with the road surface to have.

Die Kraft der Feder (4) ist so ausgelegt, daß sich die Nägel unter der Einwirkung der Fliehkraft nicht ausfah­ ren können.The force of the spring ( 4 ) is designed so that the nails cannot extend under the action of centrifugal force.

Claims (1)

Fahrzeugreifen mit ausfahrbaren Spikes, dadurch gekenn­ zeichnet, daß in den Stollen des Reifenprofiles in Hül­ sen ausfahrbare Spikes eingelassen sind, die durch Fe­ derkraft versenkt gehalten werden und die durch Erhöhung des Luftdruckes im Reifen über eine Dichtungsfolie aus­ gefahren werden und nach Ablassen des Luftdrucks selbst­ tätig wieder einfahren.Vehicle tires with extendable spikes, characterized in that extendable spikes are inserted in the studs of the tire profile in sle sen, which are kept sunk by Fe derkraft and which are driven out by increasing the air pressure in the tire via a sealing film and after releasing the air pressure itself retract actively.
DE19863632683 1986-09-26 1986-09-26 Vehicle tyre with extensible spikes Withdrawn DE3632683A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863632683 DE3632683A1 (en) 1986-09-26 1986-09-26 Vehicle tyre with extensible spikes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863632683 DE3632683A1 (en) 1986-09-26 1986-09-26 Vehicle tyre with extensible spikes

Publications (1)

Publication Number Publication Date
DE3632683A1 true DE3632683A1 (en) 1988-03-31

Family

ID=6310384

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863632683 Withdrawn DE3632683A1 (en) 1986-09-26 1986-09-26 Vehicle tyre with extensible spikes

Country Status (1)

Country Link
DE (1) DE3632683A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015070270A1 (en) 2013-11-12 2015-05-21 Würkner Gerald Device for improving the grip of a vehicle tyre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015070270A1 (en) 2013-11-12 2015-05-21 Würkner Gerald Device for improving the grip of a vehicle tyre

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination