WO2018062586A1 - Tire provided with inner vanes - Google Patents

Tire provided with inner vanes Download PDF

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Publication number
WO2018062586A1
WO2018062586A1 PCT/KR2016/010868 KR2016010868W WO2018062586A1 WO 2018062586 A1 WO2018062586 A1 WO 2018062586A1 KR 2016010868 W KR2016010868 W KR 2016010868W WO 2018062586 A1 WO2018062586 A1 WO 2018062586A1
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Prior art keywords
tire
present
tread
vanes
cavity
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PCT/KR2016/010868
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French (fr)
Korean (ko)
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류수형
김형철
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류수형
김형철
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Priority to PCT/KR2016/010868 priority Critical patent/WO2018062586A1/en
Publication of WO2018062586A1 publication Critical patent/WO2018062586A1/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
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • 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
    • B60C5/00—Inflatable pneumatic tyres or inner tubes

Definitions

  • the present invention relates to a tire, and more particularly, to a tire having an internal vane for controlling the internal air flow of the tire.
  • Pneumatic tires used in transport or passenger vehicles or motorcycles generate friction during movement. Part of this friction is due to the air flow inside the tire.
  • the air-inflated tire is mounted on the vehicle and rotates, the local deformed portion caused by the pressurization by the ground continuously performs the circular motion, and the internal air of the tire performs the rotary motion in the direction opposite to the rotation direction of the tire.
  • US Patent No. 8,973,629 filed on March 10, 2015, proposes a tire that prevents rotational movement of air inside a tire by inserting an inflatable blocker into the tire to form a separate chamber in the tire.
  • Japanese Unexamined Patent Publication No. 5-294102 published on November 9, 1993 and Japanese Unexamined Patent Publication No. 2014-141109 published on August 7, 2014 disclose an example in which a rubber plate is vertically installed on the bottom surface of a tire. This is a structure for reducing the noise of a specific range of frequency and is not related to the running efficiency of the vehicle.
  • the present invention is to provide a tire that improves the fuel efficiency of the vehicle and reduces heat generation by providing vanes for controlling the internal air flow induced in the internal cavity of the tire mounted on the vehicle while driving.
  • the tire according to the embodiment of the present invention includes a tread portion, a side wall portion, and a bead portion to form a circumferential cavity, and the inner surface extending in the cavity transversely in the width direction of the tire with the inner surface of the tread portion as a lower base.
  • a plurality of vanes are formed along the circumferential direction of the inner surface of the tread portion, and the inner vanes extend inclined in the same circumferential direction with respect to the inner surface of the tread portion.
  • the inner vane of the tire according to the present invention may be characterized in that the terminal portion has an extended height reaching both inner surfaces of the side wall portion.
  • the inner vane of the tire according to the present invention may be formed to have a convex curved surface toward the central axis of the tire.
  • the inner vane of the tire according to the present invention may be characterized in that the valve is openable only in an inclined direction.
  • the tire according to the present invention has the effect of resisting the formation of reverse rotational movement of internal air caused in one direction in the tire by the inner vane having the function of an air barrier.
  • the present invention also provides the effect that local air flow is formed in the direction of tire rotation.
  • the present invention has an effect of improving vehicle fuel economy, reducing heat generation and extending life of a tire.
  • FIG. 1 is a schematic view of a section along a vertical symmetry plane of a conventional tire.
  • FIG. 2 is a radial cross-sectional view of a tire in a normal shape portion and a locally deformed portion of a conventional tire.
  • FIG. 3 is a schematic perspective view of a tire according to an embodiment of the present invention.
  • FIG. 4 is a schematic cross sectional view through a vertical symmetry plane of a tire according to an embodiment of the present invention.
  • FIG. 5 is a tire radial cross-sectional view showing the inner vanes of the tire according to the embodiment of the present invention.
  • FIG. 6 is a partial cross-sectional view illustrating local air flow in a tire according to an embodiment of the present invention.
  • FIG. 7 is a schematic perspective view showing an arrangement of inner vanes according to an embodiment of the present invention.
  • FIG. 8 is a radial cross-sectional view comparing a normal deformed portion and a locally deformed portion of a tire according to an embodiment of the present invention.
  • FIG 9 is an operation cross-sectional view of the tire valve according to the embodiment of the present invention.
  • FIG. 10 is a radial cross-sectional view showing the tire valve according to the embodiment of the present invention.
  • FIG. 1 schematically shows a cross section through a vertical symmetry plane when a conventional tire is mounted upright in a vehicle.
  • 1 schematically shows a situation in which a vehicle tire is locally deformed while driving.
  • a portion that is pressed against the ground 2 and locally deforms is generated.
  • the vehicle moves in the driving direction M, according to the direction of rotation W of the wheel, for example, as the wheel rotates by ⁇ angle, the normal shape N is locally distorted shape D. Is switched to.
  • the local deformation portion D is moved in the direction opposite to the rotation direction of the tire.
  • the internal air present in the tire cavity 4 is rotated in a direction opposite to the tire rotation direction (W; hereinafter referred to as 'forward rotation direction') (R; hereinafter referred to as 'reverse rotation direction').
  • Fig. 2 shows the tire radial cross section of the normal shape portion N and the local deformation portion D of the conventional tire.
  • the tire typically consists of a tread portion 10, a sidewall portion 20, and a bead portion 30, and a toroidal cavity therein; 40).
  • the cavity 40 is closed by a rim not shown.
  • the local deformation site D shown on the right side of FIG. 2 is reduced in cross-sectional area of the cavity compared to the normal shape site N shown on the left side, but the width of the cavity increases relatively.
  • the tread portion 10 refers to the bottom portion where the tire is pressed by the load of the vehicle so that the width thereof is not substantially changed when the local deformation is performed, and the side wall portion 20 is the upper portion of the tread portion and the width thereof is changed during the local deformation.
  • the bead portion 30 refers to a portion that is engaged with the rim at the upper sidewall portion and the width of the bead portion does not change substantially.
  • FIG. 3 shows a schematic perspective view of a tire according to one embodiment of the invention.
  • 4 schematically illustrates a cross section through a vertical symmetry plane of a tire 100 according to one embodiment of the invention.
  • the tire 100 according to the present embodiment forms a circumferential cavity 140 by the tread part 110, the side wall part, and the bead part, and the inner surface 111 of the tread part 110 is used as the lower base.
  • a plurality of plate-shaped internal vanes 150 extending in the width direction of the tire and extending into the cavity are formed along the circumferential direction of the inner surface 111 of the tread part 110.
  • the inner vanes may have a shape of a segment of a circle depending on the degree of draft of the inner wall of the tire, and may be molded together with the inner wall liner or attached with an adhesive or the like.
  • the inner vanes may be made of materials such as rubber, polymers, plastics, fabrics, or mixtures thereof, and are preferably flexible or semi-flexible.
  • the inner vane 150 preferably extends inclined in the same circumferential direction with respect to the inner surface 111 of the tread portion 110. It is preferable to mount the tire so that the direction in which the inner vane 150 is inclined is the same as the direction of forward rotation of the tire while driving.
  • Such inner vanes have the function of an air barrier, thereby having an effect of resisting the formation of reverse rotational movement of the inner air caused by the local deformation region D in one direction.
  • the inner vanes 150 inclined backward in the forward direction when the tread portion 110 of the tire is oriented downward.
  • the inclination angle is preferably in the range of about 20 to 70 degrees from the radial direction, more preferably in the range of about 40 to 50 degrees.
  • the inner vane 150 preferably has an extended height from which the terminal portion 151, which is the upper end thereof, reaches both inner surfaces 121 of the side wall portion 120.
  • the volume of the local space 152 formed between the inner vane 150 and the inner surface 111 of the tread portion 110 at the normal shape portion N of the tire is a local deformation portion D in which the tire rotates to contact the ground. ), The local volume is relatively reduced. As a result, as shown in FIG.
  • a local air flow AIR is formed in the forward direction. This is explained as the inner vane 150 forms bellows with the inner wall of the tire to instantaneously pump air as the tire rotates, thereby generating air flow in the forward direction. The flow rate of this local air flow increases as the tire turns faster.
  • the inner vane 150 may have a convex curved surface toward the center axis of the tire to form a curved cross section.
  • FIG. 7 is an exemplary view showing only the inner vanes separated without the tire body in order to more clearly explain the arrangement and shape of the inner vanes.
  • the convex internal vanes that existed at the normal shape portion N of the tire are flattened as the tire is rotated to a local deformation portion D contacting the ground, and as the tire width is increased, it is subjected to tension by both sidewalls. Is deformed. This situation is shown schematically in FIG.
  • the local space 152 formed between the inner vane 150 and the inner surface 111 of the tread portion 110 is converted from the normal shape portion N to the local deformation portion D while the volume reduction ratio is further increased. Becomes significant and thus has the effect of more effectively causing local air flow in the forward direction.
  • 7 and 8 show an example in which a curvature of the convex inner vanes is formed only in the tire width direction, but it is also possible to simultaneously form a radial gradient.
  • the inner vane 150 may allow a valve flap 153 to be formed that is open only in an inclined direction.
  • the pumped local airflow AIR1 allows the leakage flow AIR2 through the valve formed in the inner vane adjacent to the inclined direction, thereby reducing the air resistance, thereby having the effect of smoothing the forward airflow.
  • the valve may be formed by tapering the left and right and lower boundaries so that the rear area is wider with respect to a part of the inner vanes.
  • the upper portion left uncut is a pivoting end
  • the lower boundary is a free end, which freely opens and closes. It is more effective for the air flow that the pivot end of the valve is formed above the free end.
  • a tire according to an embodiment of the present invention is a tire having a tread portion, a sidewall portion, and a bead portion to form a circumferential cavity, the open pocket having an opening in the cavity based on an inner wall of the tire.
  • a plurality of bellows of the structure is formed along the circumferential direction.
  • the open pocket structure is formed by attaching a sheet to the base surface and sewing or adhering the remaining three sides except the opening side, and the opening is opened without a lid so that air can freely enter and exit to function as a bellows. Refers to a structure.
  • the openings of the open pocket structure are preferably directed in the same circumferential direction.
  • the shape and formation method thereof are not particularly limited. Also at this time, it is preferable that the edges of the opening of the pocket structure are located on both inner surfaces of the side wall portion. This has the effect of further increasing the local spatial volume change of the pocket as the tire rotates as described above.
  • the present invention can be applied to all kinds of inflation tires mounted on passenger vehicles, buses, trucks, motorcycles, bicycles, and the like.
  • the fuel consumption may be reduced by, for example, 10% to 30% or more depending on driving conditions such as traveling speed or tire air pressure. This can be seen as an improvement in vehicle fuel economy and can help reduce tire heat generation and extend life.

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

Abstract

The present invention relates to a tire provided with inner vanes. The inner vanes modify the internal flow of air generated in the internal space of the tire attached to a vehicle while in motion. The tire according to the present invention comprises a plurality of inner vanes extending into the internal space of the tire from the inner surface of the tread, and formed across the space between the sidewalls of the tire in the widthwise direction and along the circumferential direction of the inner surface of the tread. The inner vanes extend and slope in the same circumferential direction with respect to the inner surface of the tread. The present invention provides the benefit of improving the fuel efficiency of vehicles by reducing friction and heat generated due to air flow inside the tire.

Description

내부 베인을 구비한 타이어Tires with internal vanes
본 발명은 타이어에 관한 것으로서, 구체적으로는 타이어의 내부 공기 유동을 제어하는 내부 베인을 구비한 타이어에 관한 것이다.The present invention relates to a tire, and more particularly, to a tire having an internal vane for controlling the internal air flow of the tire.
운송용 또는 승용 차량 또는 오토바이 등에 사용되는 공기 주입 타이어는 운동 중에 마찰을 발생시킨다. 이 마찰의 일부는 타이어 내부의 공기 유동에 기인한다. 예컨대, 공기 주입 타이어가 차량에 장착되어 회전하는 경우, 지면에 의한 가압에 의하여 나타나는 국부적 변형 부위가 지속적 원운동을 하게 되므로 타이어의 내부 공기는 타이어의 회전 방향과 반대 방향으로 회전 운동을 한다. 이로 인하여 타이어 내부에서 상당량의 마찰이 발생하고, 이는 타이어의 회전 운동을 거스르는 항력(drag force)을 발생시켜 차량의 주행 효율 및 수명에 부정적인 영향을 미친다. 2015년 3월 10일에 특허된 미국특허 8,973,629호에서는 타이어의 내부에 팽창식 차단체를 삽입하여 타이어 내에 분리된 챔버를 형성함으로써 타이어 내부 공기의 회전 운동을 방지하는 타이어를 제시하였다. 그러나 이 경우는 차단체를 팽창시키는 별도의 작업 공정이 요구되고, 챔버 사이에 압력 균형을 유지하기 위한 공기 통과를 허용하는 수단이 요구되는 점 등에서 실제적 활용이 곤란한 단점이 있다. 1993년 11월 9일 공개된 일본 공개특허 제5-294102호 및 2014년 8월 7일 공개된 일본 공개특허 제2014-141109호에는 타이어의 내벽 저면에 고무판을 연직으로 설치하는 예가 공개되어 있으나, 이는 특정 범위 주파수의 소음을 저감하기 위한 구조로서 차량의 주행 효율과는 관련이 없다.Pneumatic tires used in transport or passenger vehicles or motorcycles generate friction during movement. Part of this friction is due to the air flow inside the tire. For example, when the air-inflated tire is mounted on the vehicle and rotates, the local deformed portion caused by the pressurization by the ground continuously performs the circular motion, and the internal air of the tire performs the rotary motion in the direction opposite to the rotation direction of the tire. This creates a significant amount of friction inside the tire, which creates drag forces that counteract the tire's rotational movement, negatively affecting the running efficiency and life of the vehicle. US Patent No. 8,973,629, filed on March 10, 2015, proposes a tire that prevents rotational movement of air inside a tire by inserting an inflatable blocker into the tire to form a separate chamber in the tire. However, in this case, there is a disadvantage in that practical use is difficult in that a separate work process for expanding the blocker is required, and a means for allowing air passage to maintain pressure balance between chambers is required. Japanese Unexamined Patent Publication No. 5-294102 published on November 9, 1993 and Japanese Unexamined Patent Publication No. 2014-141109 published on August 7, 2014 disclose an example in which a rubber plate is vertically installed on the bottom surface of a tire. This is a structure for reducing the noise of a specific range of frequency and is not related to the running efficiency of the vehicle.
본 발명은 운행중 차량에 장착된 타이어의 내부 공동에 유발되는 내부 공기 유동을 제어하는 베인을 구비함으로써 차량의 연비를 향상시키고 발열을 저감시키는 타이어를 제공하기 위한 것이다.The present invention is to provide a tire that improves the fuel efficiency of the vehicle and reduces heat generation by providing vanes for controlling the internal air flow induced in the internal cavity of the tire mounted on the vehicle while driving.
본 발명의 실시예에 따른 타이어는 트레드부, 사이드월부, 및 비드부를 구비하여 원주상의 공동을 형성하며, 트레드부의 내측면을 하부 베이스로 하여 타이어의 폭 방향으로 가로지르며 상기 공동 내로 연장되는 내부 베인이 트레드부의 내측면의 원주 방향을 따라 복수개 형성되며, 내부 베인은 트레드부의 내측면에 대하여 동일한 원주 방향으로 경사지게 연장되는 것을 특징한다. The tire according to the embodiment of the present invention includes a tread portion, a side wall portion, and a bead portion to form a circumferential cavity, and the inner surface extending in the cavity transversely in the width direction of the tire with the inner surface of the tread portion as a lower base. A plurality of vanes are formed along the circumferential direction of the inner surface of the tread portion, and the inner vanes extend inclined in the same circumferential direction with respect to the inner surface of the tread portion.
본 발명에 따른 타이어의 내부 베인은 단말부가 사이드월부의 양 내측면에 이르는 연장 높이를 갖는 것을 특징으로 할 수 있다. The inner vane of the tire according to the present invention may be characterized in that the terminal portion has an extended height reaching both inner surfaces of the side wall portion.
본 발명에 따른 타이어의 내부 베인은 타이어의 중심축 쪽을 향하여 볼록한 곡면을 갖도록 형성된 것을 특징으로 할 수 있다. The inner vane of the tire according to the present invention may be formed to have a convex curved surface toward the central axis of the tire.
본 발명에 따른 타이어의 내부 베인은 경사진 방향으로만 개방 가능한 판막이 형성된 것을 특징으로 할 수 있다.The inner vane of the tire according to the present invention may be characterized in that the valve is openable only in an inclined direction.
본 발명에 따른 타이어는 내부 베인이 공기 배리어의 기능을 가짐으로써 타이어 내에서 일 방향으로 유발되는 내부 공기의 역회전 운동 형성을 저항하는 효과를 갖는다. 또한, 본 발명은 국부적 공기 유동이 타이어 회전 방향 쪽으로 형성되는 효과를 제공한다. 나아가서 본 발명은 차량 연비 개선 및 타이어의 발열 감소 및 수명 연장 효과를 갖는다.The tire according to the present invention has the effect of resisting the formation of reverse rotational movement of internal air caused in one direction in the tire by the inner vane having the function of an air barrier. The present invention also provides the effect that local air flow is formed in the direction of tire rotation. Furthermore, the present invention has an effect of improving vehicle fuel economy, reducing heat generation and extending life of a tire.
도1은 종래 타이어의 연직 대칭면을 따른 단면의 개략도이다.1 is a schematic view of a section along a vertical symmetry plane of a conventional tire.
도2는 종래 타이어의 정상 형상 부위와 국부적 변형 부위의 타이어 반경 방향 단면도이다.2 is a radial cross-sectional view of a tire in a normal shape portion and a locally deformed portion of a conventional tire.
도3은 본 발명의 실시예에 따른 타이어의 개략 사시도이다. 3 is a schematic perspective view of a tire according to an embodiment of the present invention.
도4는 본 발명의 실시예에 따른 타이어의 연직 대칭면을 지나는 개략 단면도이다.4 is a schematic cross sectional view through a vertical symmetry plane of a tire according to an embodiment of the present invention;
도5는 본 발명의 실시예에 따른 타이어의 내부 베인을 나타내는 타이어 반경 방향 단면도이다.5 is a tire radial cross-sectional view showing the inner vanes of the tire according to the embodiment of the present invention.
도6은 본 발명의 실시예에 따른 타이어에서 국부적 공기 유동을 나타내는 부분 단면도이다.6 is a partial cross-sectional view illustrating local air flow in a tire according to an embodiment of the present invention.
도7은 본 발명의 실시예에 따른 내부 베인의 배열을 나타내는 개략 사시도이다.7 is a schematic perspective view showing an arrangement of inner vanes according to an embodiment of the present invention.
도8은 본 발명의 실시예에 따른 타이어의 정상 형상 부위와 국부적 변형 부위를 비교한 반경 방향 단면도이다.8 is a radial cross-sectional view comparing a normal deformed portion and a locally deformed portion of a tire according to an embodiment of the present invention.
도9는 본 발명의 실시예에 따른 타이어 판막의 동작 단면도이다. 9 is an operation cross-sectional view of the tire valve according to the embodiment of the present invention.
도10은 본 발명의 실시예에 따른 타이어 판막을 도시하는 반경 방향 단면도이다.10 is a radial cross-sectional view showing the tire valve according to the embodiment of the present invention.
이하에서는 본 발명에 따른 구체적인 실시예가 설명된다. 그러나 본 발명은 여러 가지 다양한 형태로 변형하여 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지는 않는다. 본 발명에 첨부된 도면은 설명의 편의를 위하여 간략화 하거나 과장되게 묘사할 수 있으며, 본 발명을 명확하게 하기 위하여 발명과 직접적인 관계가 적은 부분은 생략되었다. Hereinafter, specific embodiments according to the present invention will be described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The drawings attached to the present invention may be simplified or exaggerated for the sake of convenience of description, and portions having a direct relationship with the present invention are omitted for clarity.
도1은 통상적인 타이어가 차량에 장착되어 직립되었을 경우, 연직 대칭면을 지나는 단면을 개략적으로 도시한다. 또한, 도1은 차량 타이어가 주행중 국부적으로 변형되는 상황을 도식적으로 나타낸다. 공기 주입 타이어(1)가 차량의 하중을 받으면 지면(ground; 2)에 가압되어 국부적으로 변형되는 부위가 발생된다. 차량이 주행 방향(M)으로 움직일 때, 바퀴의 회전 방향(W)에 따라, 예컨대, 바퀴가 θ각 만큼 회전하면서 정상 형상 부위(Normal shape, N)가 국부적 변형 부위(locally Distorted shape, D)로 전환된다. 타이어 자체를 기준으로 보면 국부적 변형 부위(D)는 타이어의 회전 방향과 반대 방향으로 이동된다. 이로 인하여 타이어 공동(4)에 존재하는 내부 공기는 타이어 회전 방향(W; 이하 ‘정회전 방향’이라 한다)과 반대 방향(R; 이하 ‘역회전 방향’이라 한다)으로 회전 운동을 하게 된다. 1 schematically shows a cross section through a vertical symmetry plane when a conventional tire is mounted upright in a vehicle. 1 schematically shows a situation in which a vehicle tire is locally deformed while driving. When the air injection tire 1 is subjected to a load of the vehicle, a portion that is pressed against the ground 2 and locally deforms is generated. When the vehicle moves in the driving direction M, according to the direction of rotation W of the wheel, for example, as the wheel rotates by θ angle, the normal shape N is locally distorted shape D. Is switched to. Based on the tire itself, the local deformation portion D is moved in the direction opposite to the rotation direction of the tire. As a result, the internal air present in the tire cavity 4 is rotated in a direction opposite to the tire rotation direction (W; hereinafter referred to as 'forward rotation direction') (R; hereinafter referred to as 'reverse rotation direction').
도2에서는 종래 타이어의 정상 형상 부위(N)와 국부적 변형 부위(D)의 타이어 반경 방향 단면을 도시한다. 도2에서 보듯이 타이어는 통상적으로 트래드부(tread portion; 10), 사이드월부(sidewall portion; 20), 및 비드부(bead portion; 30)로 이루어져 그 내부에 환상의(toroidal) 공동(cavity; 40)을 형성한다. 공동(40)은 도시되지 아니한 림(rim)에 의하여 폐쇄된다. 도2의 오른쪽에 도시된 국부 변형 부위(D)는 왼쪽에 도시된 정상 형상 부위(N)와 비교하여 공동의 단면적은 감소되지만, 공동의 폭은 상대적으로 증가한다. 본 발명에서 트레드부(10)는 차량의 하중에 의해 타이어가 가압되어 국부 변형시 폭이 실질적으로 변화되지 않는 바닥 부위를 지칭하고, 사이드월부(20)는 트래드부의 상부로서 국부 변형시 폭이 변화되는 부위를 지칭한다. 비드부(30)는 사이드월부 상부에서 림과 체결되며 국부 변형시 폭이 실질적으로 변화되지 않는 부위를 지칭한다.Fig. 2 shows the tire radial cross section of the normal shape portion N and the local deformation portion D of the conventional tire. As shown in Fig. 2, the tire typically consists of a tread portion 10, a sidewall portion 20, and a bead portion 30, and a toroidal cavity therein; 40). The cavity 40 is closed by a rim not shown. The local deformation site D shown on the right side of FIG. 2 is reduced in cross-sectional area of the cavity compared to the normal shape site N shown on the left side, but the width of the cavity increases relatively. In the present invention, the tread portion 10 refers to the bottom portion where the tire is pressed by the load of the vehicle so that the width thereof is not substantially changed when the local deformation is performed, and the side wall portion 20 is the upper portion of the tread portion and the width thereof is changed during the local deformation. Refers to the site being. The bead portion 30 refers to a portion that is engaged with the rim at the upper sidewall portion and the width of the bead portion does not change substantially.
도3은 본 발명의 일 실시예에 따른 타이어의 개략적인 사시도를 도시한다. 도4는 본 발명의 일 실시예에 따른 타이어(100)의 연직 대칭면을 지나는 단면을 개략적으로 도시한다. 본 실시예에 따른 타이어(100)는 트레드부(110), 사이드월부, 및 비드부에 의하여 원주상의 공동(140)을 형성하며, 트레드부(110)의 내측면(111)을 하부 베이스로 하여 타이어의 폭 방향으로 가로지르며 상기 공동 내로 연장되는 판상의 내부 베인(internal vane; 150)이 트레드부(110)의 내측면(111)의 원주 방향을 따라 복수개 형성된다. 내부 베인은 타이어의 내벽의 구배 정도에 따라 대략 활꼴(segment of a circle)의 모양을 띨 수 있으며, 내벽 라이너와 함께 성형되거나 또는 접착제 등으로 부착될 수 있다. 내부 베인은 고무, 고분자, 플라스틱,직물 등의 재료 또는 이들의 혼합을 사용할 수 있고, 가요성(flexible) 또는 반가요성(semi-flexible)을 갖는 것이 바람직하다. 내부 베인(150)은 트레드부(110)의 내측면(111)에 대하여 동일한 원주 방향으로 경사지게 연장되는 것이 바람직하다. 내부 베인(150)이 경사진 방향은 주행중 타이어의 정회전 방향과 동일하도록 타이어를 장착하는 것이 바람직하다. 이러한 내부 베인은 공기 배리어(air barrier)의 기능을 가짐으로써 국부적 변형 부위(D)에 의하여 일 방향으로 유발되는 내부 공기의 역회전 운동 형성을 저항하는 효과를 갖는다.3 shows a schematic perspective view of a tire according to one embodiment of the invention. 4 schematically illustrates a cross section through a vertical symmetry plane of a tire 100 according to one embodiment of the invention. The tire 100 according to the present embodiment forms a circumferential cavity 140 by the tread part 110, the side wall part, and the bead part, and the inner surface 111 of the tread part 110 is used as the lower base. Thus, a plurality of plate-shaped internal vanes 150 extending in the width direction of the tire and extending into the cavity are formed along the circumferential direction of the inner surface 111 of the tread part 110. The inner vanes may have a shape of a segment of a circle depending on the degree of draft of the inner wall of the tire, and may be molded together with the inner wall liner or attached with an adhesive or the like. The inner vanes may be made of materials such as rubber, polymers, plastics, fabrics, or mixtures thereof, and are preferably flexible or semi-flexible. The inner vane 150 preferably extends inclined in the same circumferential direction with respect to the inner surface 111 of the tread portion 110. It is preferable to mount the tire so that the direction in which the inner vane 150 is inclined is the same as the direction of forward rotation of the tire while driving. Such inner vanes have the function of an air barrier, thereby having an effect of resisting the formation of reverse rotational movement of the inner air caused by the local deformation region D in one direction.
도5는 타이어의 트레드부(110)가 아래 쪽 방향을 향하도록 배향될 때, 정회전 방향인 후방으로 경사진 내부 베인(150)을 도시한다. 경사각은 반경 방향으로부터 약 20~70도 범위인 것이 바람직하며, 더욱 바람직하게는 약 40~50도 범위이다. 도시되었듯이 내부 베인(150)은 그 상단부인 단말부(151)가 사이드월부(120)의 양 내측면(121)에 이르는 연장 높이를 갖는 것이 바람직하다. 타이어의 정상 형상 부위(N)에서 내부 베인(150)과 트레드부(110)의 내측면(111) 사이에 형성된 국부 공간(152)의 체적은 타이어가 회전하여 지면에 접촉하는 국부적 변형 부위(D)로 전환되면서 그 국부 체적이 상대적으로 감소된다. 이에 따라 도6에 도시되듯이 국부적 공기 유동(AIR)이 정방향 쪽으로 형성된다. 이는 내부 베인(150)이 타이어의 내벽과 함께 벨로우즈(bellows)를 형성하여 타이어 회전에 따라 순간적으로 공기를 펌핑을 함으로써 공기 유동을 정방향 쪽으로 발생시키는 것으로 설명된다. 이러한 국부적 공기 유동의 유속은 타이어의 회전 속도가 빠를수록 증가된다.5 shows the inner vanes 150 inclined backward in the forward direction when the tread portion 110 of the tire is oriented downward. The inclination angle is preferably in the range of about 20 to 70 degrees from the radial direction, more preferably in the range of about 40 to 50 degrees. As shown, the inner vane 150 preferably has an extended height from which the terminal portion 151, which is the upper end thereof, reaches both inner surfaces 121 of the side wall portion 120. The volume of the local space 152 formed between the inner vane 150 and the inner surface 111 of the tread portion 110 at the normal shape portion N of the tire is a local deformation portion D in which the tire rotates to contact the ground. ), The local volume is relatively reduced. As a result, as shown in FIG. 6, a local air flow AIR is formed in the forward direction. This is explained as the inner vane 150 forms bellows with the inner wall of the tire to instantaneously pump air as the tire rotates, thereby generating air flow in the forward direction. The flow rate of this local air flow increases as the tire turns faster.
본 발명의 다른 실시예에 따르면 내부 베인(150)은 타이어의 중심축 쪽을 향하여 볼록한 곡면을 가져 그 단면이 곡선을 이루도록 형성될 수 있다. 도7은 내부 베인의 배열과 형상을 한층 명확히 설명하기 위하여 타이어 본체(body)를 생략한 채 내부 베인만을 분리하여 도시한 예시도이다. 타이어의 정상 형상 부위(N)에 존재하던 볼록한 내부 베인은 타이어가 회전하여 지면에 접촉하는 국부적 변형 부위(D)로 전환되면서 타이어 폭이 증가되면 양 사이드월에 의하여 인장력을 받게 되므로 평편한 상태로 변형된다. 이러한 상황은 도8에 도식적으로 나타냈다. 이 경우, 내부 베인(150)과 트레드부(110)의 내측면(111) 사이에 형성된 국부 공간(152)은 정상 형상 부위(N)에서 국부적 변형 부위(D)로 전환되면서 체적 감소비율이 더욱 현저하게 되며, 따라서 더욱 효과적으로 정방향의 국부적 공기 유동을 유발하는 효과를 갖는다. 도7 및 도8에서는 볼록한 내부 베인의 구배(curvature)가 타이어 폭 방향으로만 형성된 예를 도시하고 있으나, 반경 방향의 구배를 동시에 형성하는 것도 가능하다. According to another exemplary embodiment of the present invention, the inner vane 150 may have a convex curved surface toward the center axis of the tire to form a curved cross section. FIG. 7 is an exemplary view showing only the inner vanes separated without the tire body in order to more clearly explain the arrangement and shape of the inner vanes. The convex internal vanes that existed at the normal shape portion N of the tire are flattened as the tire is rotated to a local deformation portion D contacting the ground, and as the tire width is increased, it is subjected to tension by both sidewalls. Is deformed. This situation is shown schematically in FIG. In this case, the local space 152 formed between the inner vane 150 and the inner surface 111 of the tread portion 110 is converted from the normal shape portion N to the local deformation portion D while the volume reduction ratio is further increased. Becomes significant and thus has the effect of more effectively causing local air flow in the forward direction. 7 and 8 show an example in which a curvature of the convex inner vanes is formed only in the tire width direction, but it is also possible to simultaneously form a radial gradient.
도9 및 도10에 도시되었듯이 내부 베인(150)은 경사진 방향으로만 개방 가능한 판막(valve flap; 153)이 형성되게 할 수 있다. 이 경우 펌핑되는 국부 공기유동(AIR1)이 경사진 방향 쪽에 인접하는 내부 베인에 형성된 판막을 통하여 누설 유동(AIR2)을 허용함으로써 공기 저항이 감소되어 정방향의 공기 유동을 더욱 원활하게 하는 효과를 가질 수 있다. 판막은 도9 및 도10에 나타내었듯이 내부 베인의 일부 면적에 대하여 후방 면적이 더 넓도록 좌우 및 하부 경계를 테이퍼(taper)지게 커팅하는 방식으로 형성될 수 있다. 여기서 커팅되지 않고 남겨진 상부는 피봇단(pivoting end)이 되고, 하부 경계는 자유단(free end)이 되어 자유롭게 개폐되는 구조를 갖는다. 판막의 피봇단은 자유단보다 상부에 형성되는 것이 공기 유동에 더욱 효과적이다. As shown in FIGS. 9 and 10, the inner vane 150 may allow a valve flap 153 to be formed that is open only in an inclined direction. In this case, the pumped local airflow AIR1 allows the leakage flow AIR2 through the valve formed in the inner vane adjacent to the inclined direction, thereby reducing the air resistance, thereby having the effect of smoothing the forward airflow. have. 9 and 10, the valve may be formed by tapering the left and right and lower boundaries so that the rear area is wider with respect to a part of the inner vanes. Here, the upper portion left uncut is a pivoting end, and the lower boundary is a free end, which freely opens and closes. It is more effective for the air flow that the pivot end of the valve is formed above the free end.
본 발명의 실시예에 따른 타이어를 다른 측면에서 기술하면, 트레드부, 사이드월부 및 비드부를 구비하여 원주상의 공동을 형성하는 타이어로서, 타이어의 내벽을 베이스로 하여 상기 공동 내에 개구부를 지닌 개방식 포켓 구조의 벨로우즈가 원주 방향을 따라 복수개 형성된다. 본 발명에서 개방식 포켓 구조란 베이스면에 시트를 덧대고 개구부 측를 제외한 나머지 3측을 꿰매거나 접착하여 형성한 구조로서, 개구부가 뚜껑이 없이 개방되어 공기가 자유롭게 출입할 수 있도록 하여 벨로우즈 기능을 할 수 있는 구조를 지칭한다. 개방식 포켓 구조의 개구부는 동일한 원주 방향으로 향하는 것이 바람직하다. 이 경우 벨로우즈가 개방식 포켓 구조를 지녀 타이어가 회전하면서 공기를 국부적으로 분사할 수 있는 구조인 한 그 모양이나 형성 방법에 특별한 제한은 없다. 이때에도 포켓 구조의 개구부의 가장자리가 사이드월부의 양 내측면에 위치하도록 하는 것이 바람직하다. 이는 앞서 설명된 바와 같이 타이어가 회전하면서 포켓의 국부 공간 체적 변화를 더욱 증가시키는 효과를 가져 온다.In another aspect, a tire according to an embodiment of the present invention is a tire having a tread portion, a sidewall portion, and a bead portion to form a circumferential cavity, the open pocket having an opening in the cavity based on an inner wall of the tire. A plurality of bellows of the structure is formed along the circumferential direction. In the present invention, the open pocket structure is formed by attaching a sheet to the base surface and sewing or adhering the remaining three sides except the opening side, and the opening is opened without a lid so that air can freely enter and exit to function as a bellows. Refers to a structure. The openings of the open pocket structure are preferably directed in the same circumferential direction. In this case, as long as the bellows has an open pocket structure and the tire can rotate locally to inject air, the shape and formation method thereof are not particularly limited. Also at this time, it is preferable that the edges of the opening of the pocket structure are located on both inner surfaces of the side wall portion. This has the effect of further increasing the local spatial volume change of the pocket as the tire rotates as described above.
본 발명은 승용 차량, 버스, 트럭, 모터사이클, 자전거 등에 장착되는 모든 종류의 공기 주입 타이어에 적용될 수 있다. 본 발명이 차량에 적용되었을 때 연료 소모량은 주행 속도나 타이어 공기압 등의 주행 조건에 따라 예를 들어 10% 내지 30% 또는 그 이상 감소될 수 있다. 이는 차량 연비 개선 효과로 나타날 수 있으며, 타이어의 발열 감소 및 수명 연장에 도움을 줄 수 있다.The present invention can be applied to all kinds of inflation tires mounted on passenger vehicles, buses, trucks, motorcycles, bicycles, and the like. When the present invention is applied to a vehicle, the fuel consumption may be reduced by, for example, 10% to 30% or more depending on driving conditions such as traveling speed or tire air pressure. This can be seen as an improvement in vehicle fuel economy and can help reduce tire heat generation and extend life.
위에서 개시된 발명은 기본적인 사상을 훼손하지 않는 범위 내에서 다양한 변형예가 가능하다. 따라서 위의 실시예들은 모두 예시적으로 해석되어야 하며, 한정적으로 해석되지 않는다. 따라서 본 발명의 보호범위는 상술한 실시예가 아니라 첨부된 청구항에 따라 정해진다. 첨부된 청구항의 균등물로의 치환은 첨부된 청구항의 보호범위에 속하는 것이다.Various modifications are possible in the invention disclosed above without departing from the basic idea. Therefore, the above embodiments should all be interpreted as illustrative and not restrictive. Therefore, the protection scope of the present invention is defined not by the above embodiments but by the appended claims. Substitution of equivalents of the appended claims is within the scope of the appended claims.

Claims (4)

  1. 트레드부, 사이드월부, 및 비드부를 구비하여 원주상의 공동을 형성하는 타이어로서, A tire having a tread portion, a sidewall portion, and a bead portion to form a cylindrical cavity,
    트레드부의 내측면을 하부 베이스로 하여 타이어의 폭 방향으로 가로지르며 상기 공동 내로 연장되는 내부 베인이 트레드부의 내측면의 원주 방향을 따라 복수개 형성되며 A plurality of inner vanes extending in the cavity in the width direction of the tire with the inner side of the tread portion extending in the cavity are formed along the circumferential direction of the inner side of the tread portion.
    내부 베인은 트레드부의 내측면에 대하여 동일한 원주 방향으로 경사지게 연장되는 타이어. The inner vane extends inclined in the same circumferential direction with respect to the inner side of the tread portion.
  2. 제1항에 있어서, The method of claim 1,
    내부 베인은 단말부가 사이드월부의 양 내측면에 이르는 연장 높이를 갖는 타이어. The inner vane is a tire having an extended height in which the terminal portion reaches both inner surfaces of the sidewall portion.
  3. 제2항에 있어서, The method of claim 2,
    내부 베인은 타이어의 중심축 쪽을 향하여 볼록한 곡면을 갖도록 형성된 타이어. The inner vane is a tire formed to have a convex curved surface toward the center axis of the tire.
  4. 제1항에 있어서, The method of claim 1,
    내부 베인은 경사진 방향으로만 개방 가능한 판막이 형성된 타이어. An inner vane is a tire with a valve that can be opened only in an inclined direction.
PCT/KR2016/010868 2016-09-29 2016-09-29 Tire provided with inner vanes WO2018062586A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05294102A (en) * 1992-04-17 1993-11-09 Bridgestone Corp Pneumatic tire
JP2006248318A (en) * 2005-03-09 2006-09-21 Yokohama Rubber Co Ltd:The Pneumatic tire
KR20080038312A (en) * 2005-06-24 2008-05-06 타이어 어코스틱스, 엘엘씨 Tire and wheel noise reducing device and system
JP5111540B2 (en) * 2010-03-12 2013-01-09 東洋ゴム工業株式会社 Pneumatic tire
JP2014141109A (en) * 2013-01-22 2014-08-07 Sumitomo Rubber Ind Ltd Pneumatic tire
KR101668187B1 (en) * 2015-04-04 2016-10-20 김형철 A tire with internal vanes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05294102A (en) * 1992-04-17 1993-11-09 Bridgestone Corp Pneumatic tire
JP2006248318A (en) * 2005-03-09 2006-09-21 Yokohama Rubber Co Ltd:The Pneumatic tire
KR20080038312A (en) * 2005-06-24 2008-05-06 타이어 어코스틱스, 엘엘씨 Tire and wheel noise reducing device and system
JP5111540B2 (en) * 2010-03-12 2013-01-09 東洋ゴム工業株式会社 Pneumatic tire
JP2014141109A (en) * 2013-01-22 2014-08-07 Sumitomo Rubber Ind Ltd Pneumatic tire
KR101668187B1 (en) * 2015-04-04 2016-10-20 김형철 A tire with internal vanes

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