WO2014006858A1 - Boulon, clou pour pneu et pneu clouté - Google Patents

Boulon, clou pour pneu et pneu clouté Download PDF

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Publication number
WO2014006858A1
WO2014006858A1 PCT/JP2013/004027 JP2013004027W WO2014006858A1 WO 2014006858 A1 WO2014006858 A1 WO 2014006858A1 JP 2013004027 W JP2013004027 W JP 2013004027W WO 2014006858 A1 WO2014006858 A1 WO 2014006858A1
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WO
WIPO (PCT)
Prior art keywords
pin
tire
stud
face
groove
Prior art date
Application number
PCT/JP2013/004027
Other languages
English (en)
Japanese (ja)
Inventor
浩樹 沢田
川眞田　智
祐貴 渡辺
智明 伊藤
Original Assignee
株式会社ブリヂストン
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 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Publication of WO2014006858A1 publication Critical patent/WO2014006858A1/fr

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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
    • B60C11/1675—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
    • B60C11/1643—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
    • B60C11/1656—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 concave or convex, e.g. barrel-shaped

Definitions

  • the present invention relates to a pin used for a stud driven into a studded tire, a tire stud, and a spike tire.
  • a spike tire in which metal studs are driven into a plurality of holes formed on a tread surface is known as a winter tire with improved running performance on a frozen road (ice road) or a snowy road.
  • a stud used for a studded tire generally, a cylindrical body having a small hole formed in one end face, a hard pin press-fitted into a small hole in the body, and the body on the other end face side of the body And a stud provided with a flange for preventing slippage provided integrally therewith.
  • the stud is embedded in the tread portion from the flange to one end surface of the body, and is driven into a hole formed in the tread portion tread surface so that the pin protrudes from the tire surface.
  • the pin is formed using an ultra-hard metal such as tungsten steel, and the body and the flange are formed using a metal such as an aluminum alloy or steel.
  • the stud that has been driven scratches ice and snow, increasing the frictional resistance of the tire.
  • the pin 12 of the stud 11 embedded in the tread portion 10 of the tire rotating clockwise is a road surface 13 (ice road or snowy road). ).
  • the body 15 whose corners protrude from the hole 14 due to the contact between the pin 12 and the road surface 13 comes into contact with the road surface 13, the stud 11 scratches ice and snow, and the running performance is improved.
  • the present invention is intended to solve the above-described problem, and provides a pin and a stud for a tire that can improve the braking performance on ice of a spike tire, and a spike tire that improves the braking performance on ice. Objective.
  • the inventors have intensively studied to solve the above problems. As a result, it was found that providing a groove on one end face of the pin to increase the edge component is extremely effective for improving the braking performance on ice, and that the pin itself can be reduced in weight.
  • the pin of the present invention is used for a stud that is driven into a studded tire.
  • a groove is provided on one end surface, and the one end surface is divided into three or more portions by the groove. This is because the edge component can be increased and the braking performance on ice of the tire can be improved.
  • the one end face is divided into three or more and five or less portions by the groove. This is because the edge component can be further increased while preventing pin chipping, and the braking performance on ice of the tire can be further improved.
  • the groove width of the groove is W (mm) and the maximum outer diameter of one end surface of the pin is OD (mm), 0.15 ⁇ W / OD ⁇ 0.5 and 2.0 ⁇ OD ⁇ 4.0 It is preferable to satisfy. This is because by setting the above range, it is possible to achieve both braking performance on ice and anti-stud off performance.
  • stud off resistance means that the stud is difficult to fall off during traveling.
  • the “groove width” means a width in a direction perpendicular to the extending direction of the groove, and when the groove width is not constant, it means the maximum width of the groove.
  • the “maximum outer diameter” means the largest interval when one end face of the pin is sandwiched between two parallel lines contacting the end face.
  • the one end face is divided at an equal angle by the groove. This is because the strength of the pin can be improved.
  • the stud of the present invention includes a columnar body in which a concave portion is formed on one end surface in the axial direction, and a part including one end surface of the pin protruding from the one end surface of the body.
  • the above-mentioned pin is provided. This is because the on-ice braking performance of the spike tire can be improved by using the stud having the above pin by driving it into a plurality of holes formed on the tread surface of the studded tire.
  • the maximum depth of the groove from one end face of the pin is D (mm)
  • the height from one end face of the body to one end face of the pin is H ( mm) 0.15 ⁇ D / H ⁇ 0.5 and 0.8 ⁇ H ⁇ 2.0 It is preferable to satisfy. This is because by setting the above range, it is possible to achieve both braking performance on ice and anti-stud off performance. If the height from one end face of the body to one end face of the pin is not constant, the height from the position of the maximum height of one end face of the body to the position of the maximum height of one end face of the pin It shall be said.
  • the maximum height position refers to the position on the uppermost axial direction when the direction in which the pin is provided is the upper side and the direction in which the flange is provided is the lower side in the axial direction of the body.
  • the spike tire of the present invention is characterized in that the tire stud is driven into a plurality of holes formed in the tread surface. This is because the on-ice braking performance of the spike tire can be improved.
  • the present invention it is possible to provide a pin and a tire stud that can improve the on-ice braking performance of a spike tire, and therefore it is possible to improve the on-ice braking performance of a spike tire.
  • (B) It is a front view of the pin concerning other embodiment of this invention.
  • (A) It is an upper side figure of the pin concerning other embodiment of this invention.
  • (B) It is a front view of the pin concerning other embodiment of this invention.
  • (A) It is a top view of the pin concerning another embodiment of this invention.
  • (B) It is a front view of the pin concerning another embodiment of this invention.
  • (A) It is a top view of the pin concerning another embodiment of this invention.
  • (B) It is a front view of the pin concerning another embodiment of this invention.
  • (A) It is a top view of the pin concerning another embodiment of this invention.
  • (B) It is a front view of the pin concerning another embodiment of this invention. It is a front view which shows the stud for tires concerning other embodiment of this invention.
  • FIG. 2 is a front view showing a tire stud (hereinafter also simply referred to as a stud) according to an embodiment of the present invention.
  • a stud 1 according to the present invention is formed on a substantially cylindrical body 2 and one end face 2a in the direction of an axis C of the body 2 (a central axis C extending in the longitudinal direction of the body).
  • a pin 3 disposed in a concave portion (indicated by a dotted line in the figure), and a flange 4 for preventing slipping provided integrally with the body 2 on the other end surface side in the axial direction of the body 2 are provided.
  • the edge portion on the one end surface 2a side in the axial direction of the body 2 is chamfered.
  • FIG. 3 (a) and 3 (b) are diagrams for explaining the pin 3, FIG. 3 (a) is a top view of the pin 3, and FIG. 3 (b) is an end view of the pin 3.
  • FIG. 3A a groove 5 is formed in one end face 3a of the pin 3, and the pin 3 is thus divided into four discontinuous portions.
  • the groove 5 is provided so that two grooves extending from one end to the other at one end face 3 a of the pin 3 intersect each other perpendicularly, and one end face 3 a of the pin 3 is formed by the groove 5. It is divided into four equal angles (90 ° in the illustrated example). Further, as shown in FIG.
  • the groove 5 has a semicircular cross section, in other words, the bottom is rounded.
  • the bottom of the groove can be flat.
  • one end face 3a is flat, but may be curved so as to have a center of curvature inside the pin (that is, may be curved in a shape convex in the protruding direction of the pin). ).
  • the pin shown in FIGS. 3 (a) and 3 (b) is in the concave portion of the body, and the one end surface is on the upper side in the axial direction as shown in FIG.
  • the tire stud inserted and fixed (in this example, press-fitted) so as to be on the lower side, as shown in FIG. 5, is a spiked tire that is driven into a plurality of holes 7 formed in the tread surface 6 The effect will be described.
  • the edge component can be increased and the braking performance on ice can be improved. Furthermore, since the groove is provided in the pin, the pin can be reduced in weight. Further, since it is not necessary to increase the number of pins and it is not necessary to perform special processing on the stud body, it is possible to suppress an increase in cost.
  • one end surface 3a is divided
  • FIGS. 8A and 8B are diagrams for explaining pins according to other embodiments of the present invention, respectively. is there.
  • the end surface 3a can be divided into six parts at equal angles (60 ° in the illustrated example) by the grooves 5. 7 (a) and 7 (b), the end surface 3a can be divided into eight parts at equal angles (45 ° in the illustrated example) by the grooves 5, and further, FIG. As in the example shown in b), the end surface 3a can also be divided into ten portions at equal angles (36 ° in the illustrated example) by the grooves 5.
  • FIGS. 9A and 9B the end surface 3 a can be divided into three parts by the groove 5.
  • the width of the groove formed on one end surface 3a of the pin is W (mm), and the maximum outer diameter of the one end surface 3a of the pin is set.
  • OD (mm) 0.15 ⁇ W / OD ⁇ 0.5 and 2.0 ⁇ OD ⁇ 4.0 It is preferable to satisfy.
  • the contour of the pin itself can be enlarged to ensure basic performance on ice, while the OD (mm) is set to 4.0 or less. This is because it is possible to avoid a decrease in basic anti-stud-off performance due to an excessively large pin and a large road surface reaction force.
  • At least two grooves are provided on one end surface of the pin, and the at least two grooves are formed so that the groove divides the one end surface of the pin at an equal angle. Is preferred. This is because by dividing into equal intervals, the area of the land portion divided by the groove becomes uniform, the land portion having a small area and small strength is not formed, the pin is missing, and the edge component decreases. This is because a decrease in braking performance on ice can be prevented.
  • the maximum depth of the groove from one end face 3a of the pin is D (mm), and as shown in FIG.
  • the height from the end surface 2a to one end surface 3a of the pin is H (mm)
  • the ratio D / H is 0.15 or more, it is possible to sufficiently secure the groove depth and sufficiently exhibit the effect as an edge when the pin is dragged on ice.
  • the ratio D / H is 0.5 or less, the groove is appropriately shallow with respect to the land area defined by the groove to ensure the strength of the pin, and the pin is placed on the road surface on ice. This is because it is possible to suppress the occurrence of chipping at the time of dragging or on a dry road surface, thereby preventing a decrease in braking performance on ice due to chipping and a decrease in edge components.
  • H 0.8 (mm) or more
  • H 2.0 (mm
  • the top surface shape of the pin that is, the planar shape of one end surface 3a of the pin can be various shapes other than a circular shape, for example, as shown in FIGS. 10 (a) and 10 (b). It is particularly preferable to have a shape provided with the notch 3b. Since the rectangular corner is close to point contact, the ground contact pressure can be made extremely high locally, and as a result, the amount of biting into the icy road surface increases compared to the case of line contact with a cylindrical edge. This is because an actual edge effect greater than the size calculated from the shape can be obtained, so that the braking performance on ice is particularly improved.
  • a part of the body has a recess (shown by a dotted line in the drawing) on the upper end surface of the body 2 having a notch 2 b reaching the upper end surface on the side surface.
  • a pin can be press-fitted so as to protrude from the upper end surface.
  • the pins according to the inventive examples 1 to 9 and the pin according to the comparative example were prototyped, and the pins according to the conventional example were prepared.
  • Each pin is inserted into a recess in the upper end surface of the body, studs that are press-fitted so that a part protrudes from the upper end surface of the body are inserted into a plurality of holes formed in the tread portion tread surface, and the upper end surface of the body is Spike tires were produced by driving to a standard.
  • the specifications of each tire are shown in Table 1 below.
  • Each of the tires having a tire size of 195 / 65R15 was incorporated into a rim having a rim size of 6J ⁇ 15 inches, filled with an internal pressure of 210 kPa, and the following evaluation was performed.
  • ⁇ Ice braking performance> After running on general roads on ice and snow and dry roads (preliminary driving of about 80 km in mileage), the test driver suddenly braked the vehicle from the initial speed of 20 km / h on the course on the ice roads. And the braking distance until a vehicle became a stationary state was measured, and the braking performance on ice of a spike tire was evaluated from the reciprocal number.
  • the evaluation is an index evaluation with a relative value where the evaluation result of the conventional example is 100, and the larger the value, the higher the braking performance on the icy road surface.
  • ⁇ Stud-off resistance> The snow and dry road surface was run 30000 km from the time of a new tire. Then, the number of studs dropped after running was measured, and the ratio of the number of dropped studs to the total number of initial studs was calculated to evaluate the stud slip-off property of the spike tire.
  • the evaluation is an index evaluation with a relative value where the evaluation result of the conventional example is 100, and the smaller the value, the higher the stud-off resistance performance. Table 1 below shows the evaluation results together with the tire specifications.
  • tires according to Invention Examples 10 to 21 were manufactured by changing the groove width W, groove depth D, pin outer diameter OD, and pin protrusion height H, and evaluated in the same manner as described above.
  • the specifications and evaluation results of each tire are shown in Tables 2 and 3 below.
  • the tires described above have common specifications that are not shown in the tables.

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

Abstract

L'invention concerne un boulon (3) à utiliser pour intégrer des clous dans un pneu à clouter, et est caractérisé en ce qu'il comprend des rainures (5) disposées sur une surface d'extrémité (3a), et en ce que la surface d'extrémité (3a) est divisée en trois parties ou plus par les rainures (5). Ledit clou comprend également : un corps en forme de colonne dans lequel un évidement est formé dans la surface d'extrémité (3a) dans le sens axial ; et ledit boulon (3) qui est inséré dans l'évidement et qui possède une partie qui comprend la surface d'extrémité (3a) du boulon (3) qui fait saillie depuis une surface d'extrémité (3a) du corps. En outre, ce pneu clouté est formé par intégration dudit clou dans de multiples trous formés sur une surface de bande de roulement.
PCT/JP2013/004027 2012-07-04 2013-06-27 Boulon, clou pour pneu et pneu clouté WO2014006858A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-150571 2012-07-04
JP2012150571A JP5997518B2 (ja) 2012-07-04 2012-07-04 ピン、タイヤ用スタッドおよびスパイクタイヤ

Publications (1)

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WO2014006858A1 true WO2014006858A1 (fr) 2014-01-09

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PCT/JP2013/004027 WO2014006858A1 (fr) 2012-07-04 2013-06-27 Boulon, clou pour pneu et pneu clouté

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108025602A (zh) * 2015-10-07 2018-05-11 横滨橡胶株式会社 充气轮胎以及防滑钉

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR447945A (fr) * 1912-09-04 1913-01-18 Jean Joseph Gonon Rivets antidérapants pour bandages de roues
JPS6115609U (ja) * 1984-07-03 1986-01-29 住友ゴム工業株式会社 タイヤ用スパイク
JP3037216U (ja) * 1996-10-25 1997-05-16 株式会社ニューテクノ タイヤスパイク
JPH10193921A (ja) * 1997-01-06 1998-07-28 Maruemu:Kk スパイクピンの構造
WO2010098092A1 (fr) * 2009-02-24 2010-09-02 株式会社ブリヂストン Pneumatique à clouter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR447945A (fr) * 1912-09-04 1913-01-18 Jean Joseph Gonon Rivets antidérapants pour bandages de roues
JPS6115609U (ja) * 1984-07-03 1986-01-29 住友ゴム工業株式会社 タイヤ用スパイク
JP3037216U (ja) * 1996-10-25 1997-05-16 株式会社ニューテクノ タイヤスパイク
JPH10193921A (ja) * 1997-01-06 1998-07-28 Maruemu:Kk スパイクピンの構造
WO2010098092A1 (fr) * 2009-02-24 2010-09-02 株式会社ブリヂストン Pneumatique à clouter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108025602A (zh) * 2015-10-07 2018-05-11 横滨橡胶株式会社 充气轮胎以及防滑钉

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JP2014012454A (ja) 2014-01-23
JP5997518B2 (ja) 2016-09-28

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