WO2021246350A1 - スタッドピン及びそれを備えたタイヤ - Google Patents
スタッドピン及びそれを備えたタイヤ Download PDFInfo
- Publication number
- WO2021246350A1 WO2021246350A1 PCT/JP2021/020601 JP2021020601W WO2021246350A1 WO 2021246350 A1 WO2021246350 A1 WO 2021246350A1 JP 2021020601 W JP2021020601 W JP 2021020601W WO 2021246350 A1 WO2021246350 A1 WO 2021246350A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stud pin
- shell
- inner shell
- outer shell
- tire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/14—Anti-skid inserts, e.g. vulcanised into the tread band
- B60C11/16—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile
-
- 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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/14—Anti-skid inserts, e.g. vulcanised into the tread band
- B60C11/16—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile
- B60C11/1675—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile with special shape of the plug- tip
-
- 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
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/14—Anti-skid inserts, e.g. vulcanised into the tread band
- B60C11/16—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile
- B60C11/1675—Anti-skid inserts, e.g. vulcanised into the tread band of plug form, e.g. made from metal, textile with special shape of the plug- tip
- B60C11/1681—Spherical top portions
Definitions
- the present invention relates to a stud pin and a tire equipped with the stud pin, and more particularly to a stud pin capable of enhancing the edge effect and improving the performance on ice and a tire equipped with the stud pin.
- stud tires in which stud pins are driven into the tread portion are known (see, for example, Patent Documents 1 to 3).
- the stud pin has a buried base embedded in the tread portion of the tire and a tip portion located on the distal end side of the buried base portion and in contact with the road surface.
- the edge of the tip of the stud pin comes into contact with the icy road surface, and the edge effect is exerted to exhibit excellent on-ice performance.
- An object of the present invention is to provide a stud pin capable of enhancing the edge effect and improving the performance on ice and a tire provided with the stud pin.
- a stud pin of the present invention for achieving the above object is a stud pin having a buried base embedded in a tread portion of a tire and a tip portion located on the distal end side of the embedded base portion and in contact with a road surface.
- the tip portion is characterized by including an outer shell formed in an annular shape, an inner shell surrounded by the outer shell, and a groove portion interposed between the outer shell and the inner shell.
- the tire of the present invention for achieving the above object is characterized in that the above-mentioned stud pin is arranged in the tread portion.
- the tip of the stud pin is provided with an outer shell formed in an annular shape, an inner shell surrounded by the outer shell, and a groove portion interposed between the outer shells, whereby the outer shell and the inner shell each form an edge. Therefore, the edge effect of the stud pin can be significantly enhanced and the on-ice performance of the tire can be effectively improved.
- the tip of the stud pin is composed of an annular outer shell and an inner shell surrounded by the annular outer shell, it is possible to secure sufficient strength for each of the outer shell and the inner shell.
- the groove portion is continuous in an annular shape around the inner shell.
- the edge effect can be enhanced and the performance on ice can be effectively improved.
- the tip portion of the stud pin includes at least one connecting portion for connecting the outer shell and the inner shell to each other, and the total length of the inner peripheral side of the groove portion is 50% or more of the outer peripheral length of the inner shell. .. In this case, the strength of the stud pin can be increased.
- the inner shell preferably has an inner groove extending along the outer peripheral edge thereof. In this case, since the amount of edges is further increased, the performance on ice can be effectively improved.
- the inner peripheral shape of the outer shell and the outer peripheral shape of the inner shell are different from each other.
- the snow-removing ice property of the tip of the stud pin can be improved, and the on-ice performance can be further improved by increasing the amount of edges.
- the inner peripheral shape of the outer shell and the outer peripheral shape of the inner shell may be similar to each other. In this case as well, sufficient edge effect can be expected.
- the distance Ly between the outer shell and the inner shell measured in the direction orthogonal to the stud pin central axis is preferably in the range of 10% to 35% of the outer shell dimension Lx measured in the direction orthogonal to the stud pin central axis. ..
- the inner hull includes the inner hull body located on the innermost side, and the dimension Lz of the inner hull body measured in the direction orthogonal to the stud pin central axis is the dimension of the outer hull measured in the direction orthogonal to the stud pin central axis. It is preferably in the range of 10% to 60% of Lx. As a result, the strength of the stud pin can be sufficiently ensured, and deterioration of snow-removal ice-removing property and workability can be avoided.
- the tire of the present invention is preferably a pneumatic tire, but may be a non-pneumatic tire.
- the inside thereof can be filled with an inert gas such as air or nitrogen or other gas.
- FIG. 1 is a perspective view showing a stud pin according to an embodiment of the present invention.
- FIG. 2 is a plan view showing the stud pin of FIG.
- FIG. 3 is a side view showing the stud pin of FIG.
- FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG.
- FIG. 5 is a plan view showing a modified example of the stud pin.
- FIG. 6 is a plan view showing another modification of the stud pin.
- FIG. 7 is a plan view showing another modification of the stud pin.
- FIG. 8 is a plan view showing another modification of the stud pin.
- FIG. 9 is a cross-sectional view taken along the meridian showing an example of the pneumatic tire of the present invention.
- 1 to 4 show stud pins according to an embodiment of the present invention.
- the stud pin P of the present embodiment has a buried base 10 embedded in the tread portion of the tire and a tip portion located on the tip side of the buried base 10 and in contact with the road surface. It has 20 tires.
- the buried base 10 is connected to a columnar body portion 11, a columnar shank portion 12 connected to the body portion 11 and having a smaller diameter than the body portion 11, and a shank connected to the shank portion 12. It is composed of a columnar bottom portion 13 having a diameter larger than that of the portion 12.
- the metal material constituting the tip portion 20 has a higher hardness than the metal material constituting the buried base portion 10, and the buried base portion 10 and the tip portion 20 are integrally processed.
- the tip portion 20 has an outer shell 21 formed in an annular shape, a columnar inner shell 22 surrounded by the outer shell 21, and a groove portion interposed between the outer shell 21 and the inner shell 22. It is equipped with 23. That is, edges are formed at the outer peripheral end and the inner peripheral end of the outer shell 21 on the ground plane, respectively, and edges are also formed at the outer peripheral end of the inner shell 22 on the ground plane.
- the tip portion 20 of the stud pin P includes the outer shell 21 formed in an annular shape, the inner shell 22 surrounded by the outer shell 21, and the groove portion 23 interposed therein, whereby the outer shell 21 and the inner shell 21 and the inner shell 21 are provided. Since each of the 22 forms an edge, the edge effect of the stud pin P can be significantly enhanced and the on-ice performance of the tire can be effectively improved.
- the tip of the stud pin P is composed of an annular outer shell 21 and an inner shell 22 surrounded by the annular outer shell 21, it is possible to secure sufficient strength for each of the outer shell 21 and the inner shell 22.
- the groove portion 23 is preferably continuous in an annular shape around the inner shell 22.
- the amount of edges at the inner peripheral end of the outer shell 21 and the outer peripheral end of the inner shell 22 can be maximized, the edge effect thereof can be enhanced, and the performance on ice can be effectively improved.
- FIG. 5 shows a modified example of the stud pin.
- the tip portion 20 of the stud pin P includes a plurality of connecting portions 24 that connect the outer shell 21 and the inner shell 22 to each other. These connecting portions 24 are arranged so as to extend radially with respect to the central axis of the stud pin P. Further, in providing the connecting portion 24 between the outer shell 21 and the inner shell 22, it is preferable that the total length of the inner peripheral side of the groove portion 23 is 50% or more of the outer peripheral length of the inner shell 22. For example, in FIG.
- the outer peripheral length of 22 (the outer peripheral length when it is assumed that the connecting portion 24 does not exist) is Lb, it is preferable that La ⁇ 0.5 ⁇ Lb. In this case, the strength of the stud pin P can be increased.
- the total length of the groove portion 23 on the inner peripheral side is less than 50% of the outer peripheral length of the inner shell 22, the effect of improving the performance on ice is reduced due to the decrease in the amount of edges.
- FIGS. 6 to 8 show other modified examples of the stud pin, respectively.
- the inner hull 22 has an inner groove portion 22C extending in an annular shape along the outer peripheral edge thereof, whereby the inner hull body 22A in which the inner hull 22 is located on the innermost side and the inner hull outer edge located on the outer peripheral side thereof. It is divided into parts 22B. By partitioning the inner shell 22 into the inner shell main body 22A and the inner shell outer edge portion 22B in this way, the amount of edges is further increased, so that the performance on ice can be effectively improved.
- the inner peripheral shape of the outer shell 21 and the outer peripheral shape of the inner shell 22 are different from each other.
- the inner peripheral shape of the outer shell 21 is circular, but the outer peripheral shape of the inner shell 22 is square.
- the inner peripheral shape of the outer shell 21 is circular, but the outer peripheral shape of the inner shell 22 is elliptical.
- the inner peripheral shape of the outer shell 21 and the outer peripheral shape of the inner shell 22 may be similar to each other (see FIG. 2). In this case as well, sufficient edge effect can be expected.
- the inner peripheral shape of the outer shell 21 and the outer peripheral shape of the inner shell 22 are not particularly limited, and various shapes such as a circular shape, an elliptical shape, and a polygonal shape including a quadrangle can be adopted.
- the distance Ly between the outer shell 21 and the inner shell 22 measured in the direction orthogonal to the central axis O of the stud pin P is the outer shell measured in the direction orthogonal to the central axis O of the stud pin P.
- the dimension Lx of 21 is preferably in the range of 10% to 35%, more preferably in the range of 15% to 30%.
- the dimension Lz of the inner shell body 22A measured in the direction orthogonal to the central axis O of the stud pin P is orthogonal to the central axis O of the stud pin P.
- the dimension Lx of the outer shell 21 is measured in the range of 10% to 60%, more preferably 20% to 40%.
- the dimension Lx of the outer shell 21 measured in the direction orthogonal to the central axis O of the stud pin P is preferably set in the range of 2 mm to 4 mm. Further, the thickness t of the outer shell 21 measured in the direction orthogonal to the central axis O of the stud pin P is preferably set in the range of 0.3 mm to 0.6 mm. As a result, the strength of the stud pin P can be sufficiently ensured, and deterioration of snow-removal ice-removing property and workability can be avoided.
- the above-mentioned dimension Lx of the outer shell 21, the distance Ly between the outer shell 21 and the inner shell 22, the dimension Lz of the inner shell main body 22A, and the thickness t of the outer shell 21 are the positions where the outer shell 21 and the inner shell 22 are separated by the groove portion 23. It is measured at an arbitrary position around the central axis O of the stud pin P. When the outer shell 21 or the inner shell 22 is chamfered, the dimensions are measured assuming that the chamfered portion does not exist.
- FIG. 9 shows an example of the pneumatic tire of the present invention.
- the pneumatic tire T includes a tread portion 31 extending in the tire circumferential direction to form an annular shape, a pair of sidewall portions 32, 32 arranged on both sides of the tread portion 31, and these. It includes a pair of bead portions 33, 33 arranged inside the sidewall portion 32 in the tire radial direction.
- a carcass layer 4 is mounted between the pair of bead portions 33, 33.
- the carcass layer 34 includes a plurality of reinforcing cords extending in the radial direction of the tire, and is folded back from the inside to the outside of the tire around the bead core 35 arranged in each bead portion 33.
- a bead filler 36 made of a rubber composition having a triangular cross section is arranged on the outer periphery of the bead core 35.
- a plurality of belt layers 37 are embedded on the outer peripheral side of the carcass layer 34 in the tread portion 31.
- These belt layers 37 include a plurality of reinforcing cords that are inclined with respect to the tire circumferential direction, and the reinforcing cords are arranged so as to intersect each other between the layers.
- the inclination angle of the reinforcing cord with respect to the tire circumferential direction is set to, for example, in the range of 10 ° to 40 °.
- a steel cord is preferably used as the reinforcing cord of the belt layer 37.
- At least one belt cover layer 38 having reinforcing cords arranged at an angle of, for example, 5 ° or less with respect to the tire circumferential direction is arranged on the outer peripheral side of the belt layer 37 for the purpose of improving high-speed durability.
- an organic fiber cord such as nylon or aramid is preferably used.
- a main groove 41 extending in the tire circumferential direction is formed in the tread portion 31, and a plurality of land portions 42 are partitioned by these main grooves 41.
- a plurality of implantation holes 43 for implanting the stud pin P are formed in the land portion 42 of the tread portion 31.
- the stud pin P is arranged in the tread portion 31 so that the embedded base portion 10 is inserted into the implantation hole 43 and the tip portion 20 protrudes from the tread portion 31.
- the inner diameter of the implantation hole 43 is slightly smaller than the outer diameter of the stud pin P, and the stud pin P implanted in the implantation hole 43 is firmly held against the tread portion 31.
- the stud pin P having a predetermined structure By disposing the stud pin P having a predetermined structure on the tread portion 31 of the pneumatic tire T as described above, it is possible to exhibit excellent on-ice performance based on the edge effect of the stud pin P.
- the reinforcing structure of the pneumatic tire T shown in FIG. 9 shows a typical example, but is not limited to this. Further, the tread pattern formed on the tread portion 31 of the pneumatic tire T is not particularly limited.
- a stud pin having a buried base and a tip and having the tip processed into a columnar shape was used.
- a stud pin having a buried base portion and a tip portion, the tip portion having an annular outer shell, an inner shell surrounded by the outer shell, and a groove portion interposed between the two was used.
- the presence or absence of the inner groove portion in the inner shell, the inner peripheral shape of the outer shell, and the outer peripheral shape of the inner shell were set as shown in Table 1.
- Performance on ice Each test tire is attached to a wheel with a rim size of 16 x 6.5J and mounted on a front-wheel drive vehicle with a displacement of 1400cc.
- the air pressure is set to 250kPa, and the distance from a running state of 20km / h on ice to braking and stopping is measured. did.
- the evaluation result is shown by an index of 100 in the conventional example using the reciprocal of the measured value. The larger this index value is, the better the performance on ice is.
- the tip of the stud pin has an annular outer shell, an inner shell surrounded by the annular outer shell, and a groove portion interposed between the two, so that the comparison with the conventional example is made.
- the comparison with the conventional example is made.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
各試験タイヤをリムサイズ16×6.5Jのホイールに組み付けて排気量1400ccの前輪駆動車に装着し、空気圧を250kPaとし、氷上において20km/hの走行状態から制動し、停止するまでの距離を計測した。評価結果は、測定値の逆数を用い、従来例を100とする指数にて示した。この指数値が大きいほど氷上性能が優れていることを意味する。
11 胴体部
12 シャンク部
13 底部
20 先端部
21 外郭
22 内郭
22A 内郭本体
22B 内郭外縁部
22C 内側溝部
23 溝部
24 繋ぎ部
31 トレッド部
P スタッドピン
T 空気入りタイヤ
Claims (9)
- タイヤのトレッド部に埋設される埋設基部と、該埋設基部の先端側に位置していて路面と接触する先端部とを有するスタッドピンにおいて、前記先端部が、環状に形成された外郭と、該外郭により囲まれた内郭と、前記外郭と前記内郭との間に介在する溝部とを備えることを特徴とするスタッドピン。
- 前記溝部が前記内郭の周囲で環状に連続することを特徴とする請求項1に記載のスタッドピン。
- 前記先端部が前記外郭と前記内郭とを互いに連結する少なくとも1つの繋ぎ部を備え、前記溝部の内周側の長さの総和が前記内郭の外周長の50%以上であることを特徴とする請求項1に記載のスタッドピン。
- 前記内郭がその外周縁に沿って延びる内側溝部を有することを特徴とする請求項1~3のいずれかに記載のスタッドピン。
- 前記外郭の内周形状と前記内郭の外周形状とが互いに異なることを特徴とする請求項1~4のいずれかに記載のスタッドピン。
- 前記外郭の内周形状と前記内郭の外周形状とが互いに相似することを特徴とする請求項1~4のいずれかに記載のスタッドピン。
- スタッドピン中心軸と直交する方向に測定される前記外郭と前記内郭との間隔Lyがスタッドピン中心軸と直交する方向に測定される前記外郭の寸法Lxの10%~35%の範囲にあることを特徴とする請求項1~6のいずれかに記載のスタッドピン。
- 前記内郭が最内側に位置する内郭本体を含み、スタッドピン中心軸と直交する方向に測定される前記内郭本体の寸法Lzがスタッドピン中心軸と直交する方向に測定される前記外郭の寸法Lxの10%~60%の範囲にあることを特徴とする請求項1~7のいずれかに記載のスタッドピン。
- 請求項1~8のいずれかに記載されたスタッドピンがトレッド部に配設されていることを特徴とするタイヤ。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20225970A FI20225970A1 (en) | 2020-06-01 | 2021-05-31 | Stud and pneumatic tire with studs |
| CN202180035417.XA CN115666969A (zh) | 2020-06-01 | 2021-05-31 | 防滑钉及具备该防滑钉的轮胎 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-095497 | 2020-06-01 | ||
| JP2020095497A JP7063350B2 (ja) | 2020-06-01 | 2020-06-01 | スタッドピン及びそれを備えたタイヤ |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021246350A1 true WO2021246350A1 (ja) | 2021-12-09 |
Family
ID=78830303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2021/020601 Ceased WO2021246350A1 (ja) | 2020-06-01 | 2021-05-31 | スタッドピン及びそれを備えたタイヤ |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7063350B2 (ja) |
| CN (1) | CN115666969A (ja) |
| FI (1) | FI20225970A1 (ja) |
| WO (1) | WO2021246350A1 (ja) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6328705A (ja) * | 1986-07-21 | 1988-02-06 | Agency Of Ind Science & Technol | スパイクピン |
| WO2013014900A1 (ja) * | 2011-07-22 | 2013-01-31 | 株式会社ブリヂストン | タイヤ用スパイク及びスパイクタイヤ |
| WO2015107864A1 (ja) * | 2014-01-15 | 2015-07-23 | 横浜ゴム株式会社 | スタッドピン及び空気入りタイヤ |
| KR101977293B1 (ko) * | 2017-12-11 | 2019-05-10 | 넥센타이어 주식회사 | 스터드 핀 및 이를 구비하는 타이어 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2216762T3 (es) * | 1999-05-26 | 2004-11-01 | Pirelli Pneumatici S.P.A. | Procedimiento para la fabricacion de un neumatico con clavos y molde para el mismo. |
| SE530047C2 (sv) * | 2007-03-19 | 2008-02-12 | Nokian Renkaat Oyj | Slirskyddsdubb och ett bildäck försett med sådan |
| JP5934807B2 (ja) * | 2012-12-26 | 2016-06-15 | 東洋ゴム工業株式会社 | スタッドピン及びそれを備える空気入りタイヤ |
| JP6565574B2 (ja) * | 2015-10-08 | 2019-08-28 | 住友ゴム工業株式会社 | 冬用タイヤ |
-
2020
- 2020-06-01 JP JP2020095497A patent/JP7063350B2/ja active Active
-
2021
- 2021-05-31 WO PCT/JP2021/020601 patent/WO2021246350A1/ja not_active Ceased
- 2021-05-31 FI FI20225970A patent/FI20225970A1/en unknown
- 2021-05-31 CN CN202180035417.XA patent/CN115666969A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6328705A (ja) * | 1986-07-21 | 1988-02-06 | Agency Of Ind Science & Technol | スパイクピン |
| WO2013014900A1 (ja) * | 2011-07-22 | 2013-01-31 | 株式会社ブリヂストン | タイヤ用スパイク及びスパイクタイヤ |
| WO2015107864A1 (ja) * | 2014-01-15 | 2015-07-23 | 横浜ゴム株式会社 | スタッドピン及び空気入りタイヤ |
| KR101977293B1 (ko) * | 2017-12-11 | 2019-05-10 | 넥센타이어 주식회사 | 스터드 핀 및 이를 구비하는 타이어 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7063350B2 (ja) | 2022-05-09 |
| JP2021187342A (ja) | 2021-12-13 |
| CN115666969A (zh) | 2023-01-31 |
| FI20225970A1 (en) | 2022-10-31 |
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