Pneumatic tire and method of manufacturing the same
View Patent ↗The present technology provides a pneumatic tire provided with a mechanical fastener member for attaching an object to the inner surface of a pneumatic tire, wherein the mechanical fastener member is bonded with high bonding strength to the inner circumferential surface of the tire, and a method of manufacturing the same. The pneumatic tire of the present technology comprises a mechanical fastener member on a tire inner surface, the mechanical fastener member corresponding to a first member of a mechanical fastener separable into two members and being fixed protruding to a tire cavity side. A fixing strength of the mechanical fastener member is from 0.1 to 100 (N/mm 2 ).
1. A pneumatic tire comprising a detachable collar member disposed around a mechanical fastener member in a space formed between a protruding tip of the mechanical fastener member and a tire inner surface around the mechanical fastener member,
the mechanical fastener member being on the tire inner surface, the mechanical fastener member corresponding to a first member of a mechanical fastener separable into two members, and the mechanical fastener member being fixed protruding to a tire cavity side; wherein
the mechanical fastener member has a fixing strength of from 0.1 to 100 mm 2 .
2. The pneumatic tire according to claim 1 , wherein
a bottom portion of the mechanical fastener member is embedded in the tire inner surface, and the mechanical fastener member has a protruding height from the tire inner surface of 3 mm or greater and a maximum diameter of 8 mm or greater.
3. The pneumatic tire according to claim 2 , wherein
a recess is formed in the tire inner surface around the mechanical fastener member.
4. The pneumatic tire according to claim 3 , wherein
the mechanical fastener member comprises two or more components, the two or more components forming the mechanical fastener member by being fixed together and sandwiching a tire member or a tire reinforcing member fixed to the tire; and
the mechanical fastener member is fixed to the tire member or the tire reinforcing member fixed to the tire by vulcanization bonding.
5. The pneumatic tire according to claim 4 , wherein
the mechanical fastener member comprises the two or more components, the two or more components forming the mechanical fastener member by being fixed together and sandwiching the tire reinforcing member fixed to the tire; and
the recess is formed in the tire inner surface around the mechanical fastener member, the entire recess being positioned within an outer edge line of the tire reinforcing member when the tire inner surface is viewed in plan from vertically above the tire inner surface.
6. The pneumatic tire according to claim 5 , wherein
the collar member is disposed prior to vulcanization molding of the pneumatic tire, and the pneumatic tire is vulcanization molded in a state in which the collar member is disposed.
7. The pneumatic tire according to claim 5 , wherein
an other collar member is disposed in the space prior to vulcanization molding of the pneumatic tire and removed after the vulcanization molding of the pneumatic tire, the collar member being disposed in the space formed by the removal of the other collar member.
8. The pneumatic tire according to claim 7 , wherein
an object comprising a second member of the mechanical fastener that engages with the first member on the tire inner surface is fixed on the tire inner surface by engagement of the first member and the second member.
9. The pneumatic tire according to claim 1 , wherein
a recess is formed in the tire inner surface around the mechanical fastener member.
10. The pneumatic tire according to claim 1 , wherein
the mechanical fastener member comprises two or more components, the two or more components forming the mechanical fastener member by being fixed together and sandwiching a tire member or a tire reinforcing member fixed to the tire; and
the mechanical fastener member is fixed to the tire member or the tire reinforcing member fixed to the tire by vulcanization bonding.
11. The pneumatic tire according to claim 1 , wherein
the mechanical fastener member comprises the two or more components, the two or more components forming the mechanical fastener member by being fixed together and sandwiching a tire reinforcing member fixed to the tire; and
the recess is formed in the tire inner surface around the mechanical fastener member, the entire recess being positioned within an outer edge line of the tire reinforcing member when the tire inner surface is viewed in plan from vertically above the tire inner surface.
12. The pneumatic tire according to claim 1 , wherein
the collar member is disposed prior to vulcanization molding of the pneumatic tire, and the pneumatic tire is vulcanization molded in a state in which the collar member is disposed.
13. The pneumatic tire according to claim 1 , wherein
an other collar member is disposed in the space prior to vulcanization molding of the pneumatic tire and removed after the vulcanization molding of the pneumatic tire, the collar member being disposed in the space formed by the removal of the other collar member.
14. The pneumatic tire according to claim 1 , wherein
an object comprising a second member of the mechanical fastener that engages with the first member on the tire inner surface is fixed on the tire inner surface by engagement of the first member and the second member.
15. The pneumatic tire according to claim 14 , wherein
the object comprising the second member is (a) an electronic circuit comprising a sensor, (b) a balance weight, (c) a run-flat core, (d) an object on which an oxygen scavenger, a drying agent, and/or an ultraviolet light detecting color fixing agent is applied or mounted, (e) a noise absorbing member, or a combination thereof.
16. The pneumatic tire according to claim 1 used for construction vehicles having a tire external diameter of 0.8 m or greater.
17. A pneumatic tire comprising:
a mechanical fastener member on a tire inner surface, the mechanical fastener member corresponding to a first member of a mechanical fastener separable into two members, and the mechanical fastener member being fixed protruding to a tire cavity side; wherein
the mechanical fastener member has a fixing strength of from 0.1 to 100 N/mm 2 ;
an object comprising a second member of the mechanical fastener that engages with the first member on the tire inner surface is fixed on the tire inner surface by engagement of the first member and the second member; and
the recess is formed in the tire inner surface around the mechanical fastener member, an outer edge line of the object being positioned within the outer edge line of the recess at all positions when the tire inner surface is viewed in plan from vertically above the tire inner surface.
18. A method of manufacturing a pneumatic tire that comprises a mechanical fastener member on a tire inner surface, the mechanical fastener member corresponding to a first member of a mechanical fastener separable into two members, and the mechanical fastener member being fixed protruding to a tire cavity side, the method comprising the steps of:
disposing the mechanical fastener member on an inner surface of an unvulcanized green tire so as to protrude to a tire cavity side;
disposing a collar member in a space formed between a region approximate to a protruding tip of a protruding portion of the mechanical fastener member and the inner surface of the green tire around the mechanical fastener member to fill the space; and
vulcanization molding the green tire;
the collar member being removed in the time after vulcanization molding and before the pneumatic tire comes into use.