KR100272971B1 - Pnematic radial tire - Google Patents

Pnematic radial tire Download PDF

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Publication number
KR100272971B1
KR100272971B1 KR1019970068912A KR19970068912A KR100272971B1 KR 100272971 B1 KR100272971 B1 KR 100272971B1 KR 1019970068912 A KR1019970068912 A KR 1019970068912A KR 19970068912 A KR19970068912 A KR 19970068912A KR 100272971 B1 KR100272971 B1 KR 100272971B1
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KR
South Korea
Prior art keywords
bead
weight
radial tire
core
pillar
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KR1019970068912A
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Korean (ko)
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KR19990049903A (en
Inventor
박종복
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조충환
한국타이어주식회사
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Priority to KR1019970068912A priority Critical patent/KR100272971B1/en
Publication of KR19990049903A publication Critical patent/KR19990049903A/en
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    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/04—Bead cores
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead

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

Abstract

PURPOSE: A pneumatic radial tire is provided to improve the productivity of beads and to reduce a weight of the bead by integrally forming a bead core and a bead pillar and forming a hollow portion in the bead pillar. CONSTITUTION: A bead core(5) and a bead pillar(2) are integrally extruded. A bead portion(1) is extruded by a steel, an aluminum alloy, an F.R.P. or a synthetic resin. A hollow portion(10) is formed in the bead portion(1) to reduce a weight of the bead portion. Inclined faces under 45degrees are formed in both ends of a bead. The strength, the weight and the tension are uniformly maintained by butting the both ends. A height of the bead portion(1) is under 25mm.

Description

공기입 래디알 타이어Pneumatic Radial Tires

본 발명은 공기입 래디알 타이어에 관한 것으로서, 더욱 상세하게는 비드부를 구성하는 비드코아와 비드필러를 일체로 성형시킬 수 있게 하고,. 비드필러부에 중공부를 형성시킴으로써, 비드생산성을 향상시키고, 비드부의 중량을 감소시킬 수 있게 하는 공기입 래디알 타이어에 관한 것이다.The present invention relates to a pneumatic radial tire, and more particularly, to be able to integrally form the bead core and the bead filler constituting the bead portion. The present invention relates to a pneumatic radial tire which makes it possible to improve the bead productivity and reduce the weight of the bead by forming a hollow portion in the bead filler portion.

일반적으로 비드란 첨부된 도면 제1도에 도시되는 바와 같이, 타이어가 자동차의 림(6)에 결합하는 부분을 말하는 것으로, 비드는 자동차에 부착된 타이어가 주행 중 이탈하는 것을 방지하는 역할을 한다.In general, the bead refers to a portion of the tire coupled to the rim 6 of the vehicle, as shown in FIG. 1 of the accompanying drawings. The bead serves to prevent the tire attached to the vehicle from falling off while driving. .

비드코아(5)는 고강력 스틸와이어에 일정한 두께로 고무를 입혀 여러 층으로 감아 만들어지며, 여기에 필러(Filler)(2)를 덮어서 하나의 비드를 만들게 되는 것이다.Bead core (5) is made of high strength steel wire coated with rubber to a certain thickness to be wound in several layers, to cover the filler (2) to make a bead.

이와 같은 비드부의 제조 공정을 보다 상세하게 설명하면 다음과 같다.The manufacturing process of such a bead part is demonstrated in detail as follows.

비드코아(5)는 동으로 도금된 고장력 스틸 와이어가 재료로 사용되며, 강도, 비틀림과 굽힘을 포함한 여러 가지 시험을 거친 스틸 와이어가 풀링롤에 의해 풀려나오면서 타이어의 종류와 크기에 따라 가이드 롤을 통과하면서 특정 수의 가닥으로 모아져 나오게 된다.The bead core (5) is made of copper plated high tensile steel wire as a material. The steel wire, which has undergone various tests including strength, torsion, and bending, is released by the pulling roll to guide the guide roll according to the type and size of the tire. As it passes through, it is collected into a certain number of strands.

모아진 스틸 와이어는 작은 압출기를 통과하면서 와이어 가닥 사이와 둘레에 고무가 입혀지게 된다.The collected steel wire passes through a small extruder and rubber is applied between and around the wire strands.

고무가 입혀진 와이어가닥은 타이어의 규격에 맞추어 정해진 크기와 모양대로 비드와이어 성형기인 훠머(Former)에 감겨지게 된다. 비드와이어 성형 기계는 자동적으로 사양에 따른 회전수만름 감고 와이어 끝은 겹치게 만든 후 절단한다. 절단한 부분은 들뜨지 않도록 끝을 고무가 입혀진 코드지로 감싸주게 되며, 이와 같은 것을 생비드라 한다.Rubber coated wire strands are wound on the bead wire forming machine according to the tire size. The bead wire forming machine automatically winds up the speed according to the specification and the wire ends overlap and cut. The cut part is wrapped with rubberized coded paper to prevent it from being lifted up.

비드와이어의 2차 공정은 생비드 외부 둘레에 비드 필러(2)라 불리는 고무등을 입히는 것이다.The secondary process of the bead wire is to apply rubber or the like called the bead filler 2 around the outer surface of the raw bead.

이 공정에서 비드코아(5)와 필러(2)는 후립퍼라 불리는 고무 입힌 코드지에 의해서 감싸지게 된다. 이로서 비드의 완전한 성형이 완료되는 것이다.In this process, the bead core 5 and the filler 2 are wrapped by rubber coated cord paper called a flipper. This completes the complete shaping of the beads.

이와 같은 종래의 비드구조는 비드코아(5)를 스틸로 제작함에 따라 중량이 증가되어 자동차의 연비성능을 저하시키게 되고, 다수의 와이어를 합체하여 비드코아를 형성시키고, 이의 상부에 비드필러(2)를 결합시켜 비드부를 성형함에 따라 제조 공정이 복잡하고 까다로워 생산성이 낮아지는 문제점이 있는 것이다.The conventional bead structure is such that the weight of the bead core (5) is made of steel to increase the fuel efficiency of the vehicle is reduced, by combining a plurality of wires to form a bead core, the bead filler (2) As a result of combining the beads, the manufacturing process is complicated and difficult, resulting in low productivity.

본 발명은 전술한 문제점을 해결하기 위해 안출된 것으로서, 본 발명은 비드부를 구성하는 비드코아와 비드필러를 일체로 성형시킬 수 있게 하고, 비드필러부에 중공부를 형성시킴으로써, 비드생산성을 향상시키고, 비드부의 중량을 감소시킬 수 있게 하는 공기입 래디알 타이어를 제공함에 그 목적이 있다.The present invention has been made to solve the above-described problems, the present invention is to be able to integrally form the bead core and the bead filler constituting the bead portion, to improve the bead productivity by forming a hollow portion in the bead filler, It is an object to provide a pneumatic radial tire which makes it possible to reduce the weight of the bead portion.

본 발명은 상기와 같은 목적을 달성하기 위해서 다음과 같이 구성된다. 즉, 본 발명은 비드코아와 비드필러를 동일한 재질로 압출성형시키는 것에 특징을 둔 것이다.The present invention is configured as follows to achieve the above object. That is, the present invention is characterized by extrusion molding the bead core and the bead filler from the same material.

제1도는 종래의 비드구조를 도시한 발췌 단면도.1 is a cross-sectional view showing a conventional bead structure.

제2도(a)(b)(c)도는 본 발명에 따른 비드부를 도시한 발췌 단면도.Figure 2 (a) (b) (c) is a cross-sectional view showing the bead portion according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 비드부 2 : 비드필러1: Bead part 2: Bead filler

5 : 비드코아 10 : 중공부5: bead core 10: hollow part

이하에서는 첨부 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

제2도(a)(b)(c)도는 본 발명에 따른 비드부를 도시한 발췌 단면도이다.2 (a) (b) (c) are excerpt sectional views showing bead portions according to the present invention.

제2도에 도시된 바와 같이, 본 발명은 비드부를 구성하는 비드코아(5)와 비드필러(2)를 동일한 재질로서 일체로 압출성형시켜 구성되는 것으로, 비드부(1)의 재질로는 스틸, 알루미늄 합금, 에프알피(F.R.P) 및 합성수지 등으로 압출성형시킬 수 있다As shown in FIG. 2, the present invention is configured by integrally extruding the bead core 5 and the bead filler 2 constituting the bead part as the same material, and the material of the bead part 1 is steel. , Aluminum alloy, FRP, synthetic resin, etc.

그리고 상기 비드부(1)에는 내부가 빈 중공부(10) 형성시켜 비드부의 중량을 감소시킬 수 있게 하는 것이 바람직하다.In addition, it is preferable to form the hollow part 10 inside the bead part 1 so as to reduce the weight of the bead part.

또한 이와 같은 비드의 조인트 방법은 비드의 양단부에 45도 이하의 경사면을 형성시키고 양단부를 버트(butt)조인트 시켜 강성 및 중량은 물론 응력을 균일하게 유지할 수 있도록 한다.In addition, the bead joint method forms a slope of 45 degrees or less at both ends of the bead and butt joints at both ends to maintain the rigidity and weight as well as the stress uniformly.

이와 같은 본 발명의 비드부(1) 높이(h)는 25mm 이하로 형성시키는 것이 바람직하다.It is preferable to form the height h of the bead part 1 of this invention to 25 mm or less.

본 발명은 전술한 실시예에 국한되지 않고 본 발명의 기술사상이 허용하는 범위 내에서 다양하게 변형하여 실시할 수가 있다.The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the technical idea of the present invention.

이상에서와 같이 본 발명에 따르면 비드코아와 비드필러를 동일한 재질로써 일체로 압출성형시킴에 따라 제작 공정이 간소화되어 생산성을 대폭적으로 향상시킬 수 있음과 아울러 비드피러부에 중공부를 형성시킴에 따라 비드 중량을 감소시킬 수 있게 되어 자동차의 연비성능을 향상시킬 수 있는 효과가 있다.As described above, according to the present invention, since the bead core and the bead filler are integrally extruded with the same material, the manufacturing process can be simplified, thereby greatly improving productivity, and forming a hollow part in the bead fatigue part. It is possible to reduce the weight has the effect of improving the fuel efficiency of the car.

Claims (1)

비드부(1)를 구성하는 비드코아(5)와 비드필러(2)를 동일한 재질로서 일체로 압출성형시키되, 상기 비드부(1)에 중공부(10)를 형성시켜 구성시키며, 비드의 양단부에 45도 이하의 경사면을 형성시키고 양단부를 버트(butt)조인트 시키고, 비드부(1) 높이(h)는 25mm이하로 형성시킨 것을 특징으로 하는 공기입 래디알 타이어.The bead core 5 and the bead filler 2 constituting the bead part 1 are integrally extruded from the same material, but the hollow part 10 is formed in the bead part 1, and both ends of the bead are formed. A pneumatic radial tire, wherein an inclined surface of 45 degrees or less is formed, butt joints are formed at both ends, and the bead portion (1) has a height h of 25 mm or less.
KR1019970068912A 1997-12-15 1997-12-15 Pnematic radial tire KR100272971B1 (en)

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KR1019970068912A KR100272971B1 (en) 1997-12-15 1997-12-15 Pnematic radial tire

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KR1019970068912A KR100272971B1 (en) 1997-12-15 1997-12-15 Pnematic radial tire

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KR100272971B1 true KR100272971B1 (en) 2000-11-15

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102411073B1 (en) * 2020-10-21 2022-06-22 금호타이어 주식회사 Pneumatic low weight tire

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5671606A (en) * 1979-11-14 1981-06-15 Fuji Seikou Kk Flipper for bead wire of pneumatic tire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5671606A (en) * 1979-11-14 1981-06-15 Fuji Seikou Kk Flipper for bead wire of pneumatic tire

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