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
  • B60C19/00—Tyre parts or constructions not otherwise provided for
  • B60C19/002—Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
  • B29D30/00—Producing pneumatic or solid tyres or parts thereof
  • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
  • B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
  • B29D30/0685—Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
• • 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
  • B60C19/00—Tyre parts or constructions not otherwise provided for
  • B60C19/12—Puncture preventing arrangements
  • B60C19/122—Puncture preventing arrangements disposed inside of the inner liner
• • 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
  • B60C19/00—Tyre parts or constructions not otherwise provided for
  • B60C19/12—Puncture preventing arrangements
  • B60C19/125—Puncture preventing arrangements disposed removably on the tyre
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T152/00—Resilient tires and wheels
  • Y10T152/10—Tires, resilient
  • Y10T152/10495—Pneumatic tire or inner tube
  • Y10T152/10666—Automatic sealing of punctures [e.g., self-healing, etc.]
  • Y10T152/10675—Using flowable coating or composition
  • Y10T152/10684—On inner surface of tubeless tire

Definitions

• the invention relates to a pneumatic vehicle tire having a sound-absorbing foam ring adhesively attached in its interior to the inner surface opposite the tread, the foam ring adhering to a pre-applied, self-sealing sealant which has a tackiness required to adhere the foam ring at least immediately after its application.
• a pneumatic vehicle tire is known from DE 10 2007 028932 AI.
• the foam ring reduces the air vibration in the tire and leads to a
• the foam ring is made of open-cell foam and is also referred to as "internal absorber.”
• the sealant subsequently applied to the inside of the tire after the tire has been heated has two functions: it seals an undesirable puncture of the tire in the area of the tread by applying the viscous sealant in the event of In addition, the sealant also serves as an "adhesive" for securing the inner layer to the site of injury
• the flow behavior of the sealant may be adversely affected by the resting on the sealant foam ring, so that the desired sealing effect occurs late or not at all. In cases where the penetrating foreign body exits the tire again and a large
• Air duct leaves behind is a reliable seal by that in his
• the invention is based on the object to improve the sealing of the tire at punctures.
• the object is achieved fiction, in accordance with the fact that between the sound-absorbing foam ring and the sealant, a closed-cell foam ring is arranged with airtight effect.
• the closed-cell foam ring resting directly on the sealant seals airtight in a puncture.
• This sealing of the closed-cell foam ring ensures the sealing effect of the tire on punctures despite the fact that the sealing medium adversely affects its flow behavior. In the areas where the flow behavior of the sealant is not adversely affected by an overlying ring, the sealant still seals reliably.
• the closed-cell material ring and the open-cell foam ring are glued together by means of an adhesive. This ensures a defined position of the closed-cell material ring.
• the material package made of closed-cell and open-cell foam can be mounted in one step.
• the closed-cell material ring has a maximum radial thickness of ⁇ 50 mm, preferably a radial thickness of 20 mm to 40 mm. This ensures that at least 90% of all penetrating Foreign bodies remain within the material ring and the airtightness
• the open-cell foam ring has a radial thickness of ⁇ 60 mm, preferably a radial thickness of 10 mm to 40 mm. As a result, an optimal ratio of the amount of material and thus costs to
• sealants based on polyurethane or sealants which are a viscous mixture based on a butyl rubber, a polybutene or based on silicone are suitable.
• the closed-cell material ring with its radially outer surface over the entire surface on the sealant and also immediately adjacent to its radially inner surface over the entire surface of the open-cell foam ring, the width of the closed cell
• Material ring preferably corresponds approximately to the width of the open-cell foam ring.
• the closed-cell material ring is divided and borders with its radially inner surface over the entire surface of the open-cell foam ring.
• the support on the sealant by means of 2 or more supports.
• the layer thickness of the sealant in those areas in which the closed-cell material ring rests directly on the sealant ⁇ 2 mm, preferably ⁇ 1 mm
• the layer thickness of the sealant in those areas in which the closed-cell material ring does not rest directly on the sealant is between 2 mm and 8 mm, preferably ⁇ 5 mm.
• this can be reduced in its thickness, which has an advantageous effect on the cost price of the tire.
• the flow behavior of the viscous sealant is unaffected and seals in its usual thickness
• Tire circumferential direction or at an angle to it, continuous or interrupted, are arranged. As a result, the rigidity is increased in the circumferential direction or transversely thereto.
• FIG. 1 shows a cross section through a vehicle pneumatic tire of the prior art.
• Fig. 2 shows a cross section through the inner layer and the radially inner with respect to the inner layer arranged components of a fiction, contemporary
• FIG. 3 shows a detail through the cross-section of Figure 2 with foreign matter entered.
• Fig. 4 shows a section through the cross section of Fig. 2 with an air duct, which is generated by an invaded, but again ejected foreign body.
• Fig. 1 is a cross section through a passenger car radial tire shown, which has a profiled tread 1, side walls 2, bead areas 3, bead cores 4 and a multi-layer belt 5 and a carcass 6 has. On its inner surface, the tire with an inner layer 7 of an airtight
• a sealant 8 is applied, which is able to behave at puncture - damage to the tire - self-sealing.
• Sealant 8 adheres to a sound-absorbing foam ring 9, which immediately after the application of the sealant 8, as long as it is still sufficiently tacky, is pressed onto the sealant 8, as will be described below.
• the sound-absorbing foam ring 9 is tuned to the tire cavity frequency with respect to its sound-absorbing properties.
• the foam ring 9 has, for example, here an approximately elongated triangular cross-section which is symmetrical with respect to the tire equator.
• Foam ring 9 is an open cell foam, as it is best suited to absorb sound.
• a sealant for example
• the sealant is introduced, for example by spraying, in such a way that it covers at least the inner surface opposite the tread 1.
• Distribution of the sealant on the inner surface of the tire can be set in rotation.
• the sealant is further introduced in such an amount that the layer thickness of the sealant is between 2 mm and 8 mm.
• the sealant should be relatively fluid and sticky.
• the prefabricated foam ring 9 is inserted into the interior of the tire and pressed. After reacting the sticks
• FIG. 2 shows a cross section through the inner layer 7 and the radially inner with respect to the inner layer disposed components 8, 9, 10 of an inventive Vehicle tire.
• the pneumatic vehicle tire according to the invention differs in particular from the prior art pneumatic vehicle tire of FIG. 1 in that a closed-cell material ring, in this case a closed-cell foam ring 10, with airtight effect is arranged between the sound-absorbing open-cell foam ring 9 and the sealing means 8.
• the closed-cell foam ring 10 and the open-cell foam ring 9 are glued together by means of an adhesive and each have an approximately rectangular cross-section.
• the closed-cell foam ring 10 lies with its radially outer surface over the entire surface on the sealant 8 and borders with its radially inner surface over the entire surface of the open-celled
• the width 13 of the closed-cell foam ring 10 is equal to the width 14 of the open-cell foam ring 9.
• the sealing means 8 has a greater width 15 than the foam ring 9.
• the closed-cell foam ring 10 has a thickness 11 of about 30 mm, measured in the radial direction (rR).
• the open-cell foam ring 9 has a thickness 12 of about 20 mm, measured in the radial direction (rR).
• the sealant 8 is a polyurethane gel.
• the sealant 8 has a thickness of ⁇ 5 mm.
• FIG. 3 shows a section through the cross section of FIG. 2
• FIG. 4 shows a section through the cross section of Fig. 2 with an air duct 18 which is generated by an invaded, but again ejected foreign body 17.
• Invention s seals according to the resting directly on the sealant 8 closed-cell
• Foam ring 10 airtight at a puncture. By this seal through the closed-cell foam ring 10, the sealing effect of the tire at punctures and remaining air channels 18 despite the in his

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Tires In General (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=52391983

Family Applications (1)

Country Status (5)

Cited By (15)

Families Citing this family (18)

Citations (3)

Family Cites Families (7)

• 2014
  • 2014-03-31 DE DE102014206009.5A patent/DE102014206009A1/de active Pending
• 2015
  • 2015-01-23 EP EP15700763.4A patent/EP3126161B1/de active Active
  • 2015-01-23 WO PCT/EP2015/051296 patent/WO2015149959A1/de not_active Ceased
  • 2015-01-23 JP JP2016556976A patent/JP6378353B2/ja active Active
• 2016
  • 2016-09-28 US US15/279,029 patent/US10471781B2/en active Active

Patent Citations (3)

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