WO2018078941A1 - スタッドピン及びスタッドピンを備えた空気入りタイヤ - Google Patents

スタッドピン及びスタッドピンを備えた空気入りタイヤ Download PDF

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Publication number
WO2018078941A1
WO2018078941A1 PCT/JP2017/021237 JP2017021237W WO2018078941A1 WO 2018078941 A1 WO2018078941 A1 WO 2018078941A1 JP 2017021237 W JP2017021237 W JP 2017021237W WO 2018078941 A1 WO2018078941 A1 WO 2018078941A1
Authority
WO
WIPO (PCT)
Prior art keywords
stud pin
edge
axis
edge portion
pedestal
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
Application number
PCT/JP2017/021237
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
佳則 朝山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Priority to RU2019111770A priority Critical patent/RU2722362C1/ru
Priority to EP17863999.3A priority patent/EP3533628A4/en
Priority to CA3040262A priority patent/CA3040262C/en
Publication of WO2018078941A1 publication Critical patent/WO2018078941A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B60C11/1643—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-body portion, i.e. not cylindrical
    • 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

Definitions

  • the present invention relates to a stud pin and a pneumatic tire provided with the stud pin.
  • Patent Document 1 a structure having a body in a plan view shape and a base in a plan view shape provided at the lower end thereof is known (see Patent Document 1).
  • the distance from the base axis to the two sides is almost uniform.
  • the body also has a trapezoidal shape in plan view, and the degree of adhesion with the pin hole varies. For this reason, when force is applied from the road surface through the edge portion of the body, the pin hole is likely to fall off. For this reason, the sufficient edge effect by the upper edge part of the body with respect to a road surface cannot be expected.
  • the present invention provides: It is a stud pin attached to the pin hole of a pneumatic tire, A cylindrical body, at least one end portion in the axial center direction is configured by an edge portion extending in parallel to a straight line orthogonal to the axial center, and an arc-shaped portion centered on the axial center; A pedestal portion provided at the other end portion of the body in the axial direction of the body, including a linear portion extending in parallel with the edge portion on an outer peripheral portion, and formed asymmetrically across a horizontal axis perpendicular to the axial center; , With Provided is a stud pin characterized in that the edge portion and the straight line portion are orthogonal to a tire circumferential direction of the pneumatic tire.
  • the arcuate portion when the tire is mounted in the pin hole of the tire, the arcuate portion can be in close contact with the inner surface of the pin hole to stabilize the holding state. Moreover, the linear part of a base part can prevent the position shift of a rotation direction effectively.
  • the edge portion and the straight portion are arranged so as to be orthogonal to the tire circumferential direction. Therefore, the edge effect by the edge portion, in particular, the traction performance at the start of traveling or the braking performance at the time of braking can be sufficiently exhibited.
  • the length of the pedestal portion in the vertical axis direction orthogonal to the axis is preferably longer than the length in the horizontal axis direction orthogonal to the axis and the vertical axis.
  • This configuration makes it possible to maintain sufficient retainability against the force acting in the vertical axis direction.
  • the pedestal portion is composed of a first region and a second region divided by the horizontal axis in a plan view, It is preferable that the outer edge of the first region has an inclined portion that is inclined from both sides in the horizontal axis direction toward the vertical axis.
  • This configuration makes it possible to maintain sufficient retainability against the force acting in the vertical axis direction.
  • the outer edge of the second region has a linear portion parallel to the horizontal axis.
  • the body preferably has a tapered surface at the upper edge.
  • the pedestal is formed so as to protrude from the body all around in plan view.
  • This configuration makes it possible to improve the retention by the pedestal.
  • the present invention provides: The stud pin according to any one of the above, A pin hole formed in the tread portion and fitted with the stud pin; A pneumatic tire is provided.
  • the edge part is formed on the body, the straight part is formed on the pedestal part, and the edge part and the straight part are both orthogonal to the tire circumferential direction. The effect can be demonstrated.
  • FIG. 2 is a development view of a tread portion of a tire to which the stud pin shown in FIG. 1 is attached. It is sectional drawing of the pin hole shown in FIG. It is a top view of the stud pin concerning other embodiments.
  • the stud pin 1 is made of aluminum, an aluminum alloy or the like by molding or the like.
  • the body 2, the shank 3 that continues to the lower side of the body 2, the pedestal portion 4 that continues to the lower side, and the body 2 It is comprised with the shaft 5 provided in the upper surface center part.
  • the body 2 is substantially cylindrical, but a side surface 6 parallel to the axis is formed on a part of the outer peripheral surface. As a result, at least the outer edge of the upper end of the body 2 is formed with a body-side edge portion 8a parallel to a straight line perpendicular to the axis and the other arc-shaped portion 8b.
  • the outer edge of the upper surface of the body 2 is constituted by a tapered surface 7.
  • the tapered surface 7 is the first region that comes into contact with the road surface when the stud pin 1 is mounted on a pneumatic tire (stud tire) and travels on the road surface.
  • the tapered surface 7 formed on the body side edge portion 8a is a region that first collides with the road surface. Therefore, when the body side edge portion 8a collides with the road surface, it comes into contact with the surface.
  • the tapered surface 7 referred to here includes some curved surface shape as long as it can prevent the sharp portion from colliding with the road surface.
  • the arcuate portion 8b includes not only the arc but also a part of a polygonal shape connected by a plurality of line segments. However, the length of the line segment is shorter than the body side edge portion 8a.
  • the relationship between the diameter L1 of the cylindrical portion and the length L2 of the body side edge portion 8a is set so as to satisfy 1/4 ⁇ L2 / L1 ⁇ 3/4 in plan view. . If it is 1/4 or less, the partial contact pressure at the time of grounding becomes too large, and if it is 3/4 or more, it tends to be damaged at the time of grounding.
  • the pedestal portion 4 is formed in a vertically long shape in which the maximum length a in the vertical direction and the maximum length b in the horizontal direction satisfy a> b in plan view.
  • a linear portion 9 parallel to the side surface 6 of the body 2 is formed on one end side in the vertical direction of the pedestal portion 4.
  • the pedestal portion 4 is formed with a protruding portion 11 that protrudes in a triangular shape by two inclined portions 10 on the side opposite to the linear portion 9.
  • the protrusion 11 is symmetrical with respect to the center line in the vertical direction.
  • the angle which the inclination part 10 makes with the centerline of the vertical direction is set so that it may be less than 90 degrees. In particular, this angle is preferably 45 °.
  • Two locations connecting the straight line portion 9 and each inclined portion 10 are arc portions 12.
  • all the parts are connected by a circular arc surface so that an edge is not formed.
  • a tapered surface 13 is formed on the lower surface of the outer edge portion of the pedestal portion 4.
  • the shape of the pedestal portion 4 is not limited to the shape described here, and various shapes can be used as long as the shape expands to the outer diameter side from the body 2 in a plan view, such as a circle and a polygon.
  • the shaft 5 includes a first protrusion 14 having an odd-numbered square shape (here, a pentagon) in plan view.
  • the first edge portion 15 including one side (edge) of the first protrusion 14 is a plane parallel to the side surface 6 of the body 2.
  • the first edge portion 15 is set to be shorter than the length of the body side edge portion 8a.
  • the second edge portion 16 and the third edge portion 17 on both sides adjacent to the first edge portion 15 are opposed to the arc portion of the pedestal portion 4.
  • the fourth edge portion 18 adjacent to the second edge portion 16 and the fifth edge portion 19 adjacent to the third edge portion 17 face each inclined portion 10 of the pedestal portion 4.
  • a second protrusion 20 is formed on the upper surface of the first protrusion 14.
  • the second protrusion 20 has a rectangular shape in plan view, and one of the long sides thereof is a sixth edge 21 that is parallel to the first edge 15 of the first protrusion 14.
  • the other edge portions (the seventh edge portion 22, the eighth edge portion 23, and the ninth edge portion 24) of the second protrusion 20 are different in the extending direction from the other edge portions of the first protrusion 14. Yes.
  • the shaft 5 is provided so that its axis coincides with the axis of the body 2. Thereby, a sufficient distance can be secured in all directions from the outer edge of the body 2 to the shaft 5.
  • the number of edge portions of the second protrusion 20 is smaller than that of the first protrusion 14.
  • the first protrusion 14 has five locations and the second protrusion 20 has four locations.
  • the height of the shaft 5 is 0.5 mm or more and 2.5 mm or less here. This is because if it is less than 0.5 mm, the function as the shaft 5 cannot be sufficiently exhibited, and if it exceeds 2.5 mm, the shaft 5 is grounded before the body 2 and is easily damaged.
  • the ratio of the height of the second protrusion 20 to the first protrusion 14 is set to 10% or more and 80% or less. If it is less than 10%, the edge effect of the second protrusion 20 is insufficient, and if it exceeds 80%, the edge effect of the first protrusion 14 cannot be sufficiently exhibited.
  • the shaft 5 can also be composed of three or more stages.
  • the stud pin 1 having the above-described configuration is used by being mounted in a pin hole 26 formed in the tread portion 25 of the stud tire as shown in FIG.
  • the pin hole 26 is composed of a small diameter portion 27 having the same inner diameter and an enlarged diameter portion 28 at the tip thereof.
  • the mounting operation of the stud pin 1 in the pin hole 26 is automatically performed by a pin driving device (not shown).
  • a pin driving device not shown.
  • the shape of the pedestal portion 4 is not a point-symmetrical shape such as a circle, but a vertically long irregular shape as described above, it is possible to easily grasp the direction and accurately attach it to the pin hole 26. it can.
  • the side surface 6 of the body 2 (the first side surface of the shaft 5) is positioned on the tire kicking side so as to extend in the tire width direction perpendicular to the tire circumferential direction. In this state, a portion above the upper end portion (tapered surface 7) of the body 2 of the stud pin 1 is exposed from the surface of the tread portion 25.
  • the body side edge portion 8a of the upper end portion of the body 2 first collides with the road surface.
  • the body side edge portion 8a has a sufficient length and area. For this reason, even if the body side edge portion 8a collides with the road surface, the impact force per unit area on the road surface can be suppressed. As a result, even when traveling on a dry road surface, problems such as road surface cracks can be avoided. Further, when traveling on a frozen road surface (ice surface), the body side edge portion 8a bites into the road surface and exhibits an excellent driving force.
  • the shaft 5 that collides with the road surface is composed of two stages, and the directions of the peripheral sharp edges are different between the first protrusion 14 and the second protrusion 20 except for one point. Therefore, the edge effect can be sufficiently exhibited. That is, if it goes straight, the 4th edge part 18 of the 1st protrusion 14, the 5th edge part 19, and the vertex part which both intersect, the 8th edge part 23 of the 2nd protrusion 20, and the 1st edge part 15 Acts on the road surface (ice surface). If cornering is performed on a curve, the second edge 16 or the third edge 17 of the first protrusion 14 and the seventh edge 22 or the ninth edge 24 of the second protrusion 20 are on the road surface. To prevent lateral slippage. Furthermore, when the brake is stepped on, the first edge portion 15 of the first protrusion 14, the sixth edge portion 21 of the second protrusion 20, the fourth edge portion 18 and the fifth edge portion 19 are in contact with the road surface. Apply braking force.
  • the stud pin 1 includes a shaft 5 having a diameter smaller than that of the body 2 and a pedestal portion 4 having a diameter larger than that of the body 2 following the shaft 5, and the drop-off is effectively prevented.
  • Tests were conducted on the retaining property and the edge performance using the comparative example in which the plan view of the body 2 and the pedestal part 4 is circular and the stud pins of the examples shown in FIGS. 1 to 3.
  • tire size 195 / 65R15
  • air pressure Fr / Re 220/220 (kPa) was used.
  • a wire was connected to the stud pin 1 mounted in the pin hole 26 and pulled at a constant speed in the front-rear direction, the oblique direction, and the lateral direction. The tensile force was gradually increased, and the evaluation was performed based on the tensile force when the stud pin 1 was pulled out from the pin hole 26.
  • edge performance test test tires were mounted on a test vehicle (1500 cc, 4WD middle sedan vehicle), traveled on an ice road surface, and edge performance (driving performance, braking performance, and cornering performance) was evaluated.
  • edge performance driving performance, braking performance, and cornering performance
  • Examples 1 to 9 were index-evaluated with the case of Comparative Example 1 being 100.
  • the driving performance was evaluated by the elapsed time from the stop state until the travel distance reached 30 m on the ice road surface.
  • the braking performance was evaluated by the braking distance when the braking force was applied by ABS (Antilock Brake System) at a speed of 40 km / h.
  • ABS Antilock Brake System
  • the turning performance was similarly evaluated by the turning radius when turning at a speed of 40 km / h.
  • the pedestal portion 4 having a vertically long asymmetric shape was able to improve the retaining property other than the lateral direction.
  • the body side edge portion 8a formed on the body 2 and each side edge portion formed on the shaft 5 exhibited excellent effects in all items of the edge effect.
  • the edge effect is that the body side edge portion 8a is formed in the body 2, the direction of the edge portion can be freely set by making the shaft 5 two stages, and the edge portion is lengthened. That was the reason.
  • the body side edge portion 8a is arranged on the tire kicking side so as to extend in the tire width direction perpendicular to the tire circumferential direction, but may be arranged on the tire depression side. According to this, it becomes easy to make braking force act by the body side edge part 8a.
  • the body side edge portion 8a of the body 2 and the linear portion 9 of the pedestal portion 4 are provided in one of the regions divided in the vertical axis direction with the horizontal axis as the center, as shown in FIG. Alternatively, it may be provided on the opposite side.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
PCT/JP2017/021237 2016-10-26 2017-06-08 スタッドピン及びスタッドピンを備えた空気入りタイヤ Ceased WO2018078941A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
RU2019111770A RU2722362C1 (ru) 2016-10-26 2017-06-08 Шиповой штифт и пневматическая шина, оснащенная шиповым штифтом
EP17863999.3A EP3533628A4 (en) 2016-10-26 2017-06-08 STUD PIN, AND TIRE HAVING A STUD PIN
CA3040262A CA3040262C (en) 2016-10-26 2017-06-08 Stud pin, and pneumatic tire provided with stud pin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016209207A JP6691860B2 (ja) 2016-10-26 2016-10-26 スタッドピン及びスタッドピンを備えた空気入りタイヤ
JP2016-209207 2016-10-26

Publications (1)

Publication Number Publication Date
WO2018078941A1 true WO2018078941A1 (ja) 2018-05-03

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ID=62024613

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PCT/JP2017/021237 Ceased WO2018078941A1 (ja) 2016-10-26 2017-06-08 スタッドピン及びスタッドピンを備えた空気入りタイヤ

Country Status (5)

Country Link
EP (1) EP3533628A4 (enExample)
JP (1) JP6691860B2 (enExample)
CA (1) CA3040262C (enExample)
RU (1) RU2722362C1 (enExample)
WO (1) WO2018078941A1 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021213319A1 (de) * 2021-11-26 2023-06-01 Continental Reifen Deutschland Gmbh Spike und Kombination von Spikes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013023111A (ja) * 2011-07-22 2013-02-04 Bridgestone Corp タイヤ用スパイクおよびスパイクタイヤ
JP2016097836A (ja) * 2014-11-21 2016-05-30 株式会社ブリヂストン スタッド、及び、スタッダブルタイヤ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5702817B2 (ja) * 2013-03-19 2015-04-15 株式会社ブリヂストン スタッドピンおよびこれを用いたタイヤ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013023111A (ja) * 2011-07-22 2013-02-04 Bridgestone Corp タイヤ用スパイクおよびスパイクタイヤ
JP2016097836A (ja) * 2014-11-21 2016-05-30 株式会社ブリヂストン スタッド、及び、スタッダブルタイヤ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3533628A4 *

Also Published As

Publication number Publication date
RU2722362C1 (ru) 2020-05-29
CA3040262C (en) 2021-05-18
EP3533628A1 (en) 2019-09-04
CA3040262A1 (en) 2018-05-03
JP6691860B2 (ja) 2020-05-13
EP3533628A4 (en) 2020-06-03
JP2018069824A (ja) 2018-05-10

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