WO2018078939A1 - 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
WO2018078939A1
WO2018078939A1 PCT/JP2017/021235 JP2017021235W WO2018078939A1 WO 2018078939 A1 WO2018078939 A1 WO 2018078939A1 JP 2017021235 W JP2017021235 W JP 2017021235W WO 2018078939 A1 WO2018078939 A1 WO 2018078939A1
Authority
WO
WIPO (PCT)
Prior art keywords
stud pin
edge
vertical axis
pedestal
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
Application number
PCT/JP2017/021235
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
吉田　憲司
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 EP17864384.7A priority Critical patent/EP3533629A4/en
Priority to RU2019111645A priority patent/RU2722701C1/ru
Priority to CA3040256A priority patent/CA3040256C/en
Publication of WO2018078939A1 publication Critical patent/WO2018078939A1/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 body and the base have a trapezoidal shape in plan view, and the degree of adhesion with the pin hole of the tire to which the stud pin is attached varies. For this reason, if a force acts on the stud pin from the road surface in a state where the stud pin is mounted in the pin hole of the tire, the stud pin is likely to drop out of the pin hole of the tire.
  • An object of the present invention is to provide a stud pin that is excellent in resistance to slipping from a pin hole of a tire and that can exhibit a sufficient edge effect on a road surface, and a pneumatic tire including the stud pin.
  • 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 comprising an arcuate part centered on the axis at the end of A stud pin is provided.
  • the pedestal portion has an arcuate portion at the end in the vertical axis direction, that is, when viewed from the axial direction (hereinafter sometimes referred to as a plan view), the base portion bulges in the vertical axis direction. It can improve the resistance to coming off.
  • the edge portion is provided at one end of the body, the traction performance, cornering performance, or braking performance can be exhibited at the start of traveling, cornering, or braking due to the edge effect.
  • the pedestal portion may have a length in the vertical axis direction that is longer than a length in the horizontal axis direction when viewed from the axial direction.
  • This configuration strongly tightens the pedestal in the vertical direction when the stud pin is attached to the tire. Therefore, it is possible to ensure a good resistance to falling out against the force acting in the vertical axis direction.
  • the pedestal portion has an inclined portion that is inclined from both sides toward the vertical axis across the vertical axis when viewed from the axial direction, A protrusion may be formed at the end in the longitudinal axis direction by connecting the inclined portion.
  • the pedestal portion is composed of a first region and a second region divided by the horizontal axis,
  • the inclined portion may be formed in the first region.
  • the inclined portion of the pedestal portion is provided on the first region side, the inclined portion of the pedestal portion is disposed outside the body as viewed from the direction in which the shaft extends. Since the inclined portion of the pedestal portion is disposed outside the body, the inclined portion of the pedestal portion is caught when the stud pin is about to come out of the tire, so that the resistance of the stud pin can be improved.
  • the pedestal portion may be formed so as to protrude from the body all around as viewed from the axial direction.
  • the body may have a tapered surface at the upper edge.
  • 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 arcuate portion is formed in the body and the pedestal portion, it is possible to ensure high resistance to slipping from the pin hole of the tire, and the body has an edge portion. Therefore, a sufficient edge effect can be exerted on the road surface.
  • 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 L is formed on a part of the outer peripheral surface. As a result, at least the upper edge of the body 2 is formed with a body-side edge portion 8a parallel to a straight line perpendicular to the axis L 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 has a maximum length a in the vertical axis (a one-dot chain line extending in the vertical direction in the drawing) direction and a maximum in the horizontal axis (a one-dot chain line extending in the horizontal direction in the drawing) in plan view.
  • the length b is formed in a vertically long shape that satisfies a> b.
  • the vertical axis direction may be referred to as the vertical direction
  • the horizontal axis direction may be referred to as the horizontal direction.
  • an arc-shaped portion 12 centering on the axis L 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 protruding in a triangular shape by two inclined portions 10 on the other end side in the vertical direction.
  • the protrusion 11 is symmetrical with respect to the vertical axis.
  • shaft is set so that it may be less than 90 degrees. That is, in the plan view, the pedestal portion 4 is configured by the arc-shaped portion 12, the inclined portion 10, and the protruding portion 11.
  • the base part 4 has 1st area
  • the inclined portion 10 and the protruding portion 11 are formed in the first region S1, and are not formed in the second region S2. In other words, the inclined portion 10 is not formed across the first region S1 and the second region S2.
  • the base part 4 is formed so that it may protrude from the body 2 in a planar view.
  • the taper surface 13 is formed in the lower surface of the outer edge part of the base part 4 (refer FIG. 2).
  • 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 resistance to slipping and edge performance using a comparative example in which the shape of the body 2 and the pedestal portion 4 was 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 vertically long asymmetric shape of the pedestal portion 4 can greatly improve the vertical direction drop resistance and also improve the diagonal direction drop resistance.
  • 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 arc-shaped portion 8b of the body 2 and the pedestal portion 4 is in close contact with the inner surface of the pin hole 26, so that high retainability can be secured.
  • the pedestal portion 4 is formed asymmetrically in the vertical axis direction with the horizontal axis as the center, it is possible to improve resistance to disconnection in a specific direction depending on the mounting direction in the pin hole 26.
  • the pedestal portion 4 includes the arc-shaped portion 12 at the end in the vertical axis direction, that is, bulges in the vertical axis direction in a plan view, so that the resistance to slipping in the vertical axis direction can be improved.
  • the edge portion 8a is provided at one end of the body 2, the traction performance, cornering performance, or braking performance can be exhibited at the start of traveling, cornering, or braking due to the edge effect.
  • the pedestal portion 4 has a vertically long shape, when the stud pin 1 is attached to the tire, the pedestal portion 4 is strongly tightened in the vertical axis direction. Therefore, it is possible to ensure a good resistance to falling out against the force acting in the vertical axis direction.
  • the protruding portion 11 formed at the end in the vertical axis direction bites into the tire, and the stud pin 1 is strongly tightened by the reaction force. . Therefore, it is possible to ensure a good resistance to falling out against the force acting in the vertical axis direction.
  • the inclined portion 10 of the pedestal portion 4 is provided on the first region S1 side, the inclined portion 10 of the pedestal portion 4 is disposed outside the body 2 in a plan view. Since the inclined portion 10 of the pedestal portion 4 is disposed on the outer side of the body 2, the inclined portion 10 of the pedestal portion 4 is caught when the stud pin 1 is about to come out of the tire, thereby improving the resistance to dropping of the stud pin 1. it can.
  • the pedestal portion 4 is caught on the tire in the entire periphery in a plan view, so that the resistance to detachment by the pedestal portion 4 can be improved.
  • the portion that collides with the road surface of the body 2 is a tapered surface 7, and the impact force acting on the road surface at that time can be reduced. Therefore, generation
  • 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 protruding portion 11 of the pedestal portion 4 are provided on opposite sides of the region divided in the vertical axis direction with the horizontal axis as the center. As shown, they may be provided on the same side.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
PCT/JP2017/021235 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 WO2018078939A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP17864384.7A EP3533629A4 (en) 2016-10-26 2017-06-08 SPIKE STICK AND TIRE WITH SPIKE STICK
RU2019111645A RU2722701C1 (ru) 2016-10-26 2017-06-08 Шиповой штифт и пневматическая шина, оснащенная шиповым штифтом
CA3040256A CA3040256C (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
JP2016209203A JP6691465B2 (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
JP2016-209203 2016-10-26

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Publication Number Publication Date
WO2018078939A1 true WO2018078939A1 (ja) 2018-05-03

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PCT/JP2017/021235 Ceased WO2018078939A1 (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

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EP (1) EP3533629A4 (enExample)
JP (1) JP6691465B2 (enExample)
CA (1) CA3040256C (enExample)
RU (1) RU2722701C1 (enExample)
WO (1) WO2018078939A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3643528A1 (en) * 2018-10-22 2020-04-29 The Goodyear Tire & Rubber Company Tire stud and studded tire

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI3674105T3 (fi) * 2018-12-28 2025-01-20 Sumitomo Rubber Ind Edistyksellinen jääpitolaite ja edistyksellisellä jääpitolaitteella varustettu paineilmarengas

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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130000807A1 (en) * 2011-06-28 2013-01-03 Frederic Michel-Jean Pons Anti-skid stud for insertion into the tread of a vehicle tire and pneumatic tire comprising such anti-skid studs
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 EP3533629A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3643528A1 (en) * 2018-10-22 2020-04-29 The Goodyear Tire & Rubber Company Tire stud and studded tire

Also Published As

Publication number Publication date
JP6691465B2 (ja) 2020-04-28
RU2722701C1 (ru) 2020-06-03
CA3040256C (en) 2021-06-01
EP3533629A1 (en) 2019-09-04
CA3040256A1 (en) 2018-05-03
EP3533629A4 (en) 2020-06-03
JP2018069822A (ja) 2018-05-10

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