KR920007158B1 - Tire having soft rubber layer at bead - Google Patents

Tire having soft rubber layer at bead Download PDF

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Publication number
KR920007158B1
KR920007158B1 KR1019900017981A KR900017981A KR920007158B1 KR 920007158 B1 KR920007158 B1 KR 920007158B1 KR 1019900017981 A KR1019900017981 A KR 1019900017981A KR 900017981 A KR900017981 A KR 900017981A KR 920007158 B1 KR920007158 B1 KR 920007158B1
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South Korea
Prior art keywords
rubber layer
soft rubber
tire
bead core
bead
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KR1019900017981A
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Korean (ko)
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KR920009625A (en
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김기운
정상우
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주식회사 금호
박삼구
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Priority to KR1019900017981A priority Critical patent/KR920007158B1/en
Publication of KR920009625A publication Critical patent/KR920009625A/en
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Publication of KR920007158B1 publication Critical patent/KR920007158B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C15/00Tyre beads, e.g. ply turn-up or overlap
    • B60C15/06Flipper 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)

Abstract

A tyre has flipper-reinforced bead core (21) and apex (22), which are surrounded by rigid chafer layer (24). A soft rubber layer (5) with hardness of 40-55 is inserted between bead core (21A) and chafer layer (24A) to improve ride performance by absorbing impact and retaining compression force on rim (4). The thickness (t2) of (5) is 0.200.6 times the distance (t1) between outer surface of bead core (21A) and contact point with rim (4). The width (W1) of (5) is an extended distance from internal, vertical downward position (6) of bead core (21A) to external, horizontal side position (C) of (21A). The width (W2) is an extended distance from internal, horizontal side position (a) of (21A) to horizontal side position (d) of rim line (27A).

Description

비이드부에 연질고무층을 갖는 타이어Tires having a soft rubber layer on the bead part

제1도는 일반적인 타이어의 반단면구성도,1 is a half cross-sectional view of a general tire,

제2도는 림(rim)에 장착된 상태를 보이는 종래타이어의 비이드부 확대단면도,2 is an enlarged cross-sectional view of a bead portion of a conventional tire showing a state mounted on a rim;

제3도는 림에 장착된 상태를 보이는 본 발명 타이어의 비이드부 확대 단면도,3 is an enlarged cross-sectional view of the bead portion of the tire of the present invention showing a state mounted on the rim,

제4도는 제3도의 확대 설명도,4 is an enlarged explanatory diagram of FIG.

제5도는 종래깃과 본 발명 타이어의 비이드 안착부압축력변화 비교그래프.5 is a comparative graph of the change in the bead seat compression force of the conventional feather and the tire of the present invention.

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

1 : 트레드부 2, 2A : 비이드부1: tread part 2, 2A: bead part

3, 3A : 측벽부 4 : 림3, 3A: side wall portion 4: rim

5 : 연질고무층 12, 12A : 카카스층5: soft rubber layer 12, 12A: carcass layer

21, 21A : 비이드코어 23, 23A : 플리퍼21, 21A: Beadcore 23, 23A: Flipper

24, 24A : 체파레이어 t1 : 비이드코어와 림사이의 두께24, 24A: Chepar layer t1: Thickness between bead core and rim

t2 : 연질고무층의 두께 W1, W2 : 연질고무층의 폭t2: thickness of soft rubber layer W1, W2: width of soft rubber layer

본 발명은 타이어의 비이드부 하단에 연질고무층을 구비하여 노면으로부터 전달하는 충격을 흡수하도록 함으로써 승차감(ride performance)을 향상시키고, 비이드안착부압축력(compression force)의 급격한 변화와 비이드 안착부를 통한 공기누설을 방지하게된 연질고무층을 갖는 타이어에 관한 것이다.The present invention has a soft rubber layer at the bottom of the bead portion of the tire to absorb the shock transmitted from the road surface to improve the ride performance (ride performance), sudden change in the compression force (bead force) and bead seating portion It relates to a tire having a soft rubber layer to prevent air leakage through.

타이어의 제조공정은 각 반제품을 제작하고, 이들을 조합하는 성형공정을 통해 제작된 생타이어(green case)를 가류하여 완성된 타이어를 얻게됨은 주지와 같은 바, 이러한 공정을 통해 완성된 타이어(T)는 제1도에서와 같이, 표면에 그루우브(groove : 도시되지 않음)가 소정의 패턴으로 음각배열되고, 그 내부에는 단면상 내측으로부터 인너라이너(innerlimer : 11)와 1개이상의 카카스층(carcass ply : 12) 및 1개이상의 벨트층(13)이 차례로 적층된 트레드부(tread : 1)와; 비이드코어(bead core : 21)의 상부에 에이팩스(apes : 22)를 구비하여 플리퍼(flipper 23)로 선택보호되고, 그 외면에 트레드부(1)에서 연장된 카카스층(12)과 인너라이너(11)가 차례로 턴업(turn-up)되어 외측하단에서부터 상부측으로 체파레이어(chafer layer : 24)와 림후렌지고무(rim flange rebber : 25)를 구성하는 비이드부(2)와; 트레드부(1)와 비이드부(2)사이에 연장되는 카카스층(12)의 외면에 구비되는 측벽부(side wall : 3)로 구성된다.It is well known that the tire manufacturing process manufactures each semi-finished product and obtains the finished tire by vulcanizing the green case produced through the molding process combining them. As shown in Fig. 1, grooves (not shown) are engraved in a predetermined pattern on the surface, and inside thereof, an innerliner 11 and one or more carcass layers are formed from the inside in cross section. ply: 12) and one or more tread portions (tread: 1) in which one or more belt layers 13 are sequentially stacked; A carcass layer 12 having an apex 22 on top of the bead core 21 and being selectively protected by a flipper 23 and extending from the tread portion 1 on the outer surface thereof; An inner liner 11 is sequentially turned up to form a bead portion 2 which forms a chafer layer 24 and a rim flange rebber 25 from the outer bottom to the upper side; It consists of a side wall part 3 provided in the outer surface of the carcass layer 12 extending between the tread part 1 and the bead part 2.

도면중 미설명부호(26)은 비이드토우(toe)이고 (27)은 림라인(rim lime)이다.In the figure, reference numeral 26 is a bead toe and 27 is a rim lime.

이와 같은 구성의 타이어(T)는 제2도에서와 같이 림(4)의 비이드안착부(41)와 림후렌지부(42)에 비이드부(2)의 비이드토우(26)와 체파레이어(24) 및 림후렌지고무(25)가 밀착되도록 장착된다.The tire T having such a configuration has a bead toe 26 and a body wave of the bead portion 2 on the bead seating portion 41 and the rim flange portion 42 of the rim 4 as shown in FIG. The layer 24 and the rim furen rubber 25 are mounted to be in close contact.

그런데, 종래의 타이어(T)에서는 림(4)과 접촉하는 비이드부(2)의 각 부분 구성부재들이 스틸와이어, 텍스타일(textile) 및 경질고무층으로만 구성되어, 노면으로부터 전달되는 충격을 전혀 완화시켜주지 못함으로써 굴신영역인 측벽부(3)에서 거의 대부분의 충격을 흡수하게 된다.By the way, in the conventional tire T, the respective constituent members of the bead portion 2 in contact with the rim 4 are composed only of steel wire, textiles, and hard rubber layers, thereby preventing any impact transmitted from the road surface. By not relieving, most of the shock is absorbed by the side wall portion 3, which is the stretched region.

이는 결국 편평비(×100으로 표시됨)가 낮은 타이어일수록 충격을 일차적으로 흡수하는 측벽부(3)가 작아 승차성능이 저하되는 문제점과 비이드부(2)가 경질부재로만 구성되어 있음에 따라 전혀 충격을 흡수하지 못함으로써 충격이 측벽부(3)에만 집중되며 이에따라 승차성능이 더욱 저하되는 문제점을 유발한다.This in turn means that The lower the tire, the lower the sidewall portion 3, which absorbs the impact, the smaller the side wall portion 3, the lower the riding performance, and the bead portion 2 is made of only a hard member. As a result, the impact is concentrated only on the side wall portion 3, thereby causing a problem that the riding performance is further reduced.

본 발명은 이러한 문제점을 감안하여 림과 접촉하는 체파레이어와 비이드코어의 사이에 연질고무층을 삽입하여 줌으로써 노면으로부터 전달되는 충격을 측벽부와 분산흡수하여 승차감을 향상시키고, 낮은 공기압에서도 비이드압축력의 급격한 감소를 막아 공기누설을 방지할 수 있게된 연질고무층을 갖는 타이어를 제공함에 그 목적이 있다.In view of the above problems, the present invention improves ride comfort by dispersing and absorbing the impact transmitted from the road surface by inserting a soft rubber layer between the chemistry layer in contact with the rim and the bead core, and the bead compression force even at low air pressure. It is an object of the present invention to provide a tire having a soft rubber layer which can prevent a sudden decrease of air and prevent air leakage.

이하에서 상기 목적을 달성하는 본 발명의 바람직한 실시예를 첨부도면에 의해 상세히 설명한다.Hereinafter, preferred embodiments of the present invention for achieving the above object will be described in detail by the accompanying drawings.

본 발명 타이어(T')는 제3도에서와 같이 비이드부(2A)를 구성하는 카카스층(12A)과 챠퍼레이어(24A)의 사이에 연질고무층(5)을 설치하여서 된 부분이 지배적 특징부위이다.In the tire T 'of the present invention, as shown in FIG. 3, the portion formed by providing the soft rubber layer 5 between the carcass layer 12A and the chopper layer 24A constituting the bead portion 2A is dominant. It is a feature part.

연질고무층(5)은 경도(hardness, JIS)가 40-55범위의 연질고무로 이루어지며, 그 두께(t2)는 제4도에서와 같이 비이드코어(21A)와 림(4)이 접하는 부위사이의 두께(t1)에 대해 0.2-0.6배로 설정된다.The soft rubber layer 5 is made of soft rubber with a hardness (JIS) in the range of 40 to 55, and the thickness t2 is a portion where the bead core 21A and the rim 4 contact as shown in FIG. It is set to 0.2-0.6 times for the thickness t1 in between.

또한 연질고무층(5)의 폭(W1)은 비이드코어(21A)의 내측수직하방위치(b)에서 비이드코어(21A)의 외측 수평측방위치(c)사이에 연장설치하던가, 또는 폭(W2)이 비이드코어(21A)의 내측수평측방위치(a)에서 측면부 림라인(27A)의 수평측방위치(d)사이에 연장되도록 설치되며, 그 사이에 존재하는 폭의 범위를 포함한다.In addition, the width W1 of the soft rubber layer 5 extends from the inner vertical downward position (b) of the bead core 21A to the outer horizontal side position c of the bead core 21A, or the width ( W2) is provided to extend between the horizontal side position d of the side rim line 27A at the inner horizontal side position a of the bead core 21A, and includes a range of widths present therebetween.

설명의 편의를 위해 종래와 동일한 부재에 대해서는 A를 부가한 동일부재 번호를 사용하였으며, 이에 대한 별도의 설명은 생략한다.For convenience of description, the same member number with A is used for the same member as in the related art, and a separate description thereof will be omitted.

이와 같은 구성의 본 발명 타이어(T')는 림(4)에 장착될때에 비이드안착부(41)와 림후렌지부(42)에, 비이드부(2A)의 비이드토우(26A)와 챠퍼레이어(24A) 및 림후렌지고무(25A)가 밀착되도록 장착됨은 종래와 동일하다.The tire T 'of the present invention having such a configuration is connected to the bead seating portion 41 and the rim flange portion 42, when the tire T' is mounted on the rim 4, and the bead toe 26A of the bead portion 2A. The chopper layer 24A and the rim furen rubber 25A are mounted so as to be in close contact with each other.

그러나, 본 발명 타이어(T')는 카카스층(12A)과 챠퍼레이어(24A)의 사이에 연질고무층(5)이 구비되어 타이어(T')의 구동시 노면으로부터 전해지는 충격을 측벽부(3A)와 함께 분산흡수하게 되어 승차성능이 대폭향상되며, 특히 편평비가 낮아 측벽부(3A)가 작은 타이어일수록 가중되던 승차성능 저하의 우려는 현저히 배제된다.However, the tire T 'of the present invention is provided with a soft rubber layer 5 between the carcass layer 12A and the chopper layer 24A, so that the impact transmitted from the road surface when the tire T' is driven is affected by the side wall portion ( As a result of dispersion absorption with 3A), the riding performance is greatly improved, and in particular, since the tire having a small flatness ratio has a smaller sidewall portion 3A, the concern about the deterioration of the riding performance, which is aggravated, is significantly excluded.

또한, 림(4)에 장착된 상태에서는 비이드부(2A)의 압축력에 의해 연질고무층(5)이 압박된 상태를 유지하게 되므로, 주행중 돌발적인 공기압의 감소시에도 연질고무층(5)의 탄성복원력에 의해 림(4)과의 사이에 급격한 압력감소를 방지하게 되어, 비이드안착부(41)를 통한 공기누설은 적극적으로 방지된다.In addition, since the soft rubber layer 5 is maintained in a compressed state by the compressive force of the bead portion 2A in the state of being mounted on the rim 4, the elasticity of the soft rubber layer 5 even when the abrupt air pressure decreases while driving. The restoring force prevents a sudden pressure drop between the rim 4 and actively prevents air leakage through the bead seating portion 41.

제5도에서는 이와 같은 비이드안착부 압축력의 예측된 변화를 보여주는 비교그래프이다.5 is a comparative graph showing the predicted change in the compression force of the bead seat portion.

여기에서 알 수 있는 것은 본 발명 타이어(T')의 경우 연질고무층(5)의 작용으로 인해 종래타이어(T)에 비해 비이드안착부 압축력의 기울기가 현저히 작아짐을 알 수 있다.It can be seen that in the case of the tire T 'according to the present invention, due to the action of the soft rubber layer 5, the inclination of the bead seat compression force is significantly smaller than that of the conventional tire T.

이와 같이 본 발명 타이어(T')는 카카스층(12A)과 챠퍼레이어(24A)사이에 설치된 연질고무층(5)이 측벽부(3A)와 함께 충격을 분산흡수하여 승차감을 향상시키고, 낮은 공기압에서도 비이드부(2A)의 압축력이 급격히 감소되는 것을 막아 공기누설을 방지하게 되는 등의 잇점이 있다.Thus, in the tire T 'of the present invention, the soft rubber layer 5 provided between the carcass layer 12A and the chopper layer 24A absorbs the shock with the side wall portion 3A to improve the riding comfort, and low air pressure. In this case, the compressive force of the bead portion 2A is prevented from being sharply reduced to prevent air leakage.

Claims (4)

플리퍼(23)로 선택보강된 비이드코어(21)와 에이팩스(22)의 외면에 경질의 체파레이어(24)를 구비한 타이어에 있어서, 상기 비이드코어(21A)와 체파레이어(24A)의 사이에, 충격흡수 및 림(4)과의 압축력유지를 도모하는 경도 40-55범위의 연질고무층(5)을 갖추어서된 것을 특징으로 하는 연질고무층을 갖는 타이어.In a tire having a hard sieve layer 24 on the outer surface of the bead core 21 and the apex 22 that are reinforced by the flipper 23, the bead core 21A and the chepa layer 24A A tire having a soft rubber layer, characterized in that a soft rubber layer (5) having a hardness in the range of 40 to 55 aims at absorbing shock and maintaining a compressive force with the rim (4). 제1항에 있어서, 상기 연질고무층(5)이, 비이드코어(21A)외면과 림(4)과 접하는 부위사이의 거리(t1)에 대해 0.2-0.6배 범위의 두께(t2)로 이루어진 것을 특징으로 하는 연질고무층을 갖는 타이어.2. The flexible rubber layer (5) according to claim 1, wherein the soft rubber layer (5) has a thickness (t2) in the range of 0.2-0.6 times with respect to the distance (t1) between the outer surface of the bead core (21A) and the portion in contact with the rim (4). A tire having a soft rubber layer characterized by the above-mentioned. 제1항에 있어서, 상기 연질고무층(5)이 비이드코어(21A)의 내측수직하방위치(b)에서 비이드코어(21A)의 외측수평측방위치(c)사이를 연장한 폭(W1)으로 설치된 것을 특징으로 하는 연질고무층을 갖는 타이어.The width W1 according to claim 1, wherein the soft rubber layer 5 extends from the inner vertical downward position b of the bead core 21A to the outer horizontal side position c of the bead core 21A. Tire having a soft rubber layer, characterized in that the installation. 제1항에 있어서, 상기 연질고무층(5)이, 비이드코어(21A)의 내측수평측방위치(a)에서 측벽부 림라인(27A)의 수평측방위치(d) 사이를 연장한 폭(W2)으로 설치된 것을 특징으로 하는 연질고무층을 갖는 타이어.The width W2 according to claim 1, wherein the soft rubber layer 5 extends from an inner horizontal side position a of the bead core 21A to a horizontal side position d of the side wall rim line 27A. Tire having a soft rubber layer, characterized in that installed in).
KR1019900017981A 1990-11-07 1990-11-07 Tire having soft rubber layer at bead KR920007158B1 (en)

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Application Number Priority Date Filing Date Title
KR1019900017981A KR920007158B1 (en) 1990-11-07 1990-11-07 Tire having soft rubber layer at bead

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Application Number Priority Date Filing Date Title
KR1019900017981A KR920007158B1 (en) 1990-11-07 1990-11-07 Tire having soft rubber layer at bead

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KR920009625A KR920009625A (en) 1992-06-25
KR920007158B1 true KR920007158B1 (en) 1992-08-27

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KR1019900017981A KR920007158B1 (en) 1990-11-07 1990-11-07 Tire having soft rubber layer at bead

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100496187B1 (en) * 2002-01-12 2005-06-20 금호타이어 주식회사 Pneumatic Tire with Multi Inner Liner Rubber Layer for improving Road Noice performance
KR20030061905A (en) * 2002-01-12 2003-07-23 금호산업주식회사 Pneumatic Tire Multi Sidewall Rubber layer for improving Road Noise performance
KR101646359B1 (en) 2014-10-21 2016-08-05 금호타이어 주식회사 Pneumatic Tire

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KR920009625A (en) 1992-06-25

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