WO2016114168A1 - 非空気入りタイヤ - Google Patents
非空気入りタイヤ Download PDFInfo
- Publication number
- WO2016114168A1 WO2016114168A1 PCT/JP2016/050094 JP2016050094W WO2016114168A1 WO 2016114168 A1 WO2016114168 A1 WO 2016114168A1 JP 2016050094 W JP2016050094 W JP 2016050094W WO 2016114168 A1 WO2016114168 A1 WO 2016114168A1
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- WO
- WIPO (PCT)
- Prior art keywords
- tire
- rubber portion
- width direction
- base rubber
- tire width
- Prior art date
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Classifications
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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
- B60C7/00—Non-inflatable or solid tyres
- B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
- B60C7/102—Tyres built-up with separate rubber parts
-
- 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
- B60C11/0041—Tyre tread bands; Tread patterns; Anti-skid inserts comprising different tread rubber layers
- B60C11/005—Tyre tread bands; Tread patterns; Anti-skid inserts comprising different tread rubber layers with cap and base layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
- B60B9/02—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using springs resiliently mounted bicycle rims
- B60B9/04—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using springs resiliently mounted bicycle rims in leaf form
-
- 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
-
- 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
- B60C7/00—Non-inflatable or solid tyres
-
- 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
- B60C7/00—Non-inflatable or solid tyres
- B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
- B60C7/14—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs
-
- 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
- B60C7/00—Non-inflatable or solid tyres
- B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
- B60C7/14—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs
- B60C7/146—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs extending substantially radially, e.g. like spokes
-
- 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
- B60C7/00—Non-inflatable or solid tyres
- B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
- B60C7/14—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs
- B60C7/16—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs of helical or flat coil form
- B60C7/18—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs of helical or flat coil form disposed radially relative to wheel axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/20—Avoidance of
- B60B2900/212—Damage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/30—Increase in
- B60B2900/311—Rigidity or stiffness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
- B60B9/26—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces comprising resilient spokes
-
- 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
- B60C11/0008—Tyre tread bands; Tread patterns; Anti-skid inserts characterised by the tread rubber
- B60C2011/0016—Physical properties or dimensions
-
- 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
- B60C11/0008—Tyre tread bands; Tread patterns; Anti-skid inserts characterised by the tread rubber
- B60C2011/0016—Physical properties or dimensions
- B60C2011/0025—Modulus or tan delta
-
- 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
- B60C2200/00—Tyres specially adapted for particular applications
-
- 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
- B60C2200/00—Tyres specially adapted for particular applications
- B60C2200/12—Tyres specially adapted for particular applications for bicycles
Definitions
- Non-pneumatic tire shown in Patent Document 1 below is known.
- the non-pneumatic tire is mounted on the axle, the outer cylinder surrounding the mounting body from the outer side in the tire radial direction, the connecting member that connects the mounting body and the outer cylinder, and the outer cylinder.
- a cylindrical tread member A cylindrical tread member.
- the stress generated in the tread member is a part of the outer cylindrical body.
- the outer cylinder body is easily damaged starting from this portion, and there is room for improvement in improving the strength.
- the present invention has been made in view of the above-described circumstances, and an object thereof is to improve the strength of a non-pneumatic tire.
- a non-pneumatic tire according to the present invention includes an attachment body attached to an axle, an outer cylinder body that surrounds the attachment body from the outer side in the tire radial direction, a connecting member that connects the attachment body and the outer cylinder body, and an outer cylinder body
- the tread member is a non-pneumatic tire provided with a cylindrical tread member, and the tread member is positioned on the inner side in the tire radial direction and on the outer side in the tire radial direction from the base rubber portion.
- a cap rubber portion, and the rigidity of the base rubber portion is lower than the rigidity of the cap rubber portion.
- the strength of the non-pneumatic tire can be improved.
- FIG. 2 is a side view of the tire when the non-pneumatic tire shown in FIG. 1 is viewed from the outside of the vehicle body in the tire width direction. It is an enlarged view which shows the principal part of FIG.
- the non-pneumatic tire shown in FIG. 1 it is sectional drawing of the part containing a ring-shaped body and a tread member. It is an enlarged view which shows the principal part of FIG.
- the non-pneumatic tire 1 of the present embodiment includes an attachment body 11 attached to an axle (not shown), and a cylindrical ring-like body 13 surrounding the attachment body 11 from the outside in the tire radial direction.
- a plurality of outer cylinders are disposed between the attachment body 11 and the ring-shaped body 13 along the tire circumferential direction, and the attachment body 11 and the ring-shaped body 13 are connected to each other so as to be relatively elastically displaceable.
- a cylindrical tread member 16 externally mounted on the ring-shaped body 13.
- the non-pneumatic tire 1 of the present embodiment may be used for a two-wheeled vehicle such as a bicycle, for example, and may run with a camber angle of about 30 degrees, for example, as defined in Japanese Industrial Standard JIS T 9208 It may be adopted for a small vehicle that travels at a low speed, such as a handle-type electric wheelchair.
- the size of the non-pneumatic tire 1 is not particularly limited, but may be 3.00-8, for example.
- the size in this case is not particularly limited, but may be, for example, 155 / 65R13.
- the mounting body 11, the ring-shaped body 13, and the tread member 16 described above are disposed coaxially with the common shaft.
- the common axis is referred to as an axis O
- a direction along the axis O is referred to as a tire width direction H
- a direction orthogonal to the axis O is referred to as a tire radial direction
- a direction around the axis O is referred to as a tire circumferential direction.
- the attachment body 11, the ring-shaped body 13, and the tread member 16 are arrange
- the outer diameter of the ring-shaped body 13 is the same regardless of the position in the tire width direction H.
- the attachment body 11 connects the mounting cylinder part 17 to which the front end part of the axle is mounted, the outer ring part 18 surrounding the mounting cylinder part 17 from the outer side in the tire radial direction, and the mounting cylinder part 17 and the outer ring part 18.
- a plurality of ribs 19 are integrally formed of a metal material such as an aluminum alloy.
- the mounting cylinder portion 17 and the outer ring portion 18 are each formed in a cylindrical shape and are arranged coaxially with the axis O.
- the plurality of ribs 19 are arranged, for example, at equal intervals in the circumferential direction.
- a plurality of key groove portions 18a that are recessed toward the inside in the tire radial direction and that extend in the tire width direction H are formed on the outer peripheral surface of the outer ring portion 18 at intervals in the tire circumferential direction.
- the key groove portion 18 a opens only on the outer side (one side) of the vehicle body in the tire width direction H on the outer peripheral surface of the outer ring portion 18, and is closed on the inner side (other side) of the vehicle body in the tire width direction H.
- a lightening hole 18 b that penetrates the outer ring portion 18 in the tire radial direction is spaced apart in the tire width direction H.
- a plurality are formed.
- a plurality of hole rows 18c constituted by the plurality of lightening holes 18b are formed at intervals in the tire circumferential direction.
- each rib 19 is formed with a lightening hole 19a that penetrates the rib 19 in the tire width direction H.
- a concave portion 18d into which a plate material 28 having a through hole 28a is fitted is formed at an end edge on one side in the tire width direction H of the outer ring portion 18 at a position corresponding to the key groove portion 18a.
- the recess 18d is recessed toward the other side in the tire width direction H.
- inserted by the recessed part 18d is formed in the wall surface which faces the one side of the tire width direction H among the wall surfaces which define the recessed part 18d.
- a plurality of through-holes 28a are formed in the plate material 28 at intervals in the tire circumferential direction.
- a cylindrical exterior body 12 is fitted on the attachment body 11.
- a ridge portion 12 a that protrudes toward the inner side in the tire radial direction and extends over the entire length in the tire width direction H is formed.
- a plurality of ridge portions 12 a are formed on the inner peripheral surface of the exterior body 12 at intervals in the tire circumferential direction, and are respectively fitted in key groove portions 18 a formed on the attachment body 11.
- the exterior body 12 is attached by screwing a bolt (not shown) to the female screw portion through the through hole 28a of the plate member 28 fitted in the recess 18d in a state where the protrusion 12a is fitted in the key groove portion 18a. It is fixed to the body 11.
- the connecting member 15 connects the outer peripheral surface side of the attachment body 11 and the inner peripheral surface side of the ring-shaped body 13 so as to be relatively elastically displaceable.
- the connecting member 15 includes a first connecting plate 21 and a second connecting plate 22 that connect the outer peripheral surface of the exterior body 12 fitted on the attachment body 11 and the inner peripheral surface of the ring-shaped body 13 to each other. ing. Both the first connecting plate 21 and the second connecting plate 22 are plate materials that can be elastically deformed.
- a plurality of first connecting plates 21 are arranged along the tire circumferential direction at a position on one side along the tire width direction H.
- a plurality of second connecting plates 22 are arranged along the tire circumferential direction at the other side position along the tire width direction H. That is, the 1st connection board 21 and the 2nd connection board 22 are arrange
- the plurality of connecting members 15 are arranged separately at positions that are rotationally symmetric with respect to the axis O between the exterior body 12 and the ring-shaped body 13. Further, all the connecting members 15 have the same shape and the same size, and the width of the connecting member 15 along the tire width direction H is smaller than the width of the ring-shaped body 13 along the tire width direction H.
- the first connecting plates 21 adjacent in the tire circumferential direction are not in contact with each other.
- the second connecting plates 22 adjacent in the tire circumferential direction are not in contact with each other.
- the first connecting plate 21 and the second connecting plate 22 adjacent in the tire width direction H are also not in contact with each other.
- the first connecting plate 21 and the second connecting plate 22 have the same width and thickness along the tire width direction H.
- the outer end (one end) 21 a connected to the ring-shaped body 13 is more than the inner end (other end) 21 b connected to the exterior body 12. Is also located on one side in the tire circumferential direction.
- the outer end portion (one end portion) 22 a connected to the ring-shaped body 13 is a tire than the inner end portion (other end portion) 22 b connected to the exterior body 12. It is located on the other side in the circumferential direction.
- each one end part 21a, 22a of the 1st connection board 21 and the 2nd connection board 22 which comprises one connection member 15 makes the position of the tire width direction H mutually differ in the internal peripheral surface of the ring-shaped body 13. FIG. In this state, they are connected to the same position in the tire circumferential direction.
- the first connecting plate 21 and the second connecting plate 22 have curved portions 21d to 21f and 22d to be curved in the tire circumferential direction at intermediate portions located between the one end portions 21a and 22a and the other end portions 21b and 22b.
- a plurality of 22f are formed.
- the plurality of curved portions 21d to 21f and 22d to 22f are formed along the direction in which the first connecting plate 21 and the second connecting plate 22 extend in a side view of the non-pneumatic tire 1 as viewed from the tire width direction H. Has been.
- the first connecting plate 21 and the second connecting plate 22 extend from the plurality of bent portions 21d to 21f in the first connecting plate 21 and the plurality of bent portions 22d to 22f in the second connecting plate 22, respectively.
- the directions are adjacent to each other, and the bending directions are opposite to each other.
- the plurality of curved portions 21d to 21f formed on the first connecting plate 21 are a first curved portion 21d curved so as to protrude toward the other side in the tire circumferential direction, a first curved portion 21d, and one end portion 21a. Located between and. Further, the plurality of curved portions 21d to 21f are located between the second curved portion 21e curved so as to project toward one side in the tire circumferential direction, and between the first curved portion 21d and the other end portion 21b. And a third curved portion 21f curved so as to project toward one side in the tire circumferential direction. The second bending portion 21e is continuous with the one end portion 21a.
- the plurality of curved portions 22d to 22f formed on the second connecting plate 22 are a first curved portion 22d, a first curved portion 22d, and one end portion 22a that are curved so as to protrude toward one side in the tire circumferential direction. Located between and. Further, the plurality of curved portions 22d to 22f are located between the second curved portion 22e curved so as to project toward the other side in the tire circumferential direction, and between the first curved portion 22d and the other end portion 22b. And a third curved portion 22f curved so as to project toward the other side in the tire circumferential direction. The second bending portion 22e is continuous with the one end portion 22a.
- the first bending portions 21d and 22d are formed to have a larger radius of curvature in a tire side view than the second bending portions 21e and 22e and the third bending portions 21f and 22f. It arrange
- the lengths of the first connecting plate 21 and the second connecting plate 22 are equal to each other.
- the other end portions 21b and 22b of the first connecting plate 21 and the second connecting plate 22 are arranged so that the axis O is located from a position facing the one end portions 21a and 22a in the tire radial direction on the outer peripheral surface of the exterior body 12 in a side view of the tire. It is connected to the center at a position separated by the same distance on one side and the other side in the tire circumferential direction. Specifically, the angle formed by the line connecting the one end 21a and the other end 21b of the first connecting plate 21 and the line connecting the one end 22a and the other end 22b of the second connecting plate 22 is determined.
- the other end portions 21 b and 22 b of the first connecting plate 21 and the second connecting plate 22 are connected to the outer peripheral surface of the exterior body 12 so as to have an angle of 20 ° to 135 °.
- the first curved portions 21d and 22d, the second curved portions 21e and 22e, and the third curved portions 21f and 22f of the first connecting plate 21 and the second connecting plate 22 respectively protrude in the tire circumferential direction. Are opposite in direction and equal in size.
- each connecting member 15 in a side view of the tire extends along the tire radial direction as shown in FIG. 3, and each one end portion 21 a of the first connecting plate 21 and the second connecting plate 22. , 22a is symmetric with respect to an imaginary line L passing through the axis of symmetry.
- the exterior body 12, the ring-shaped body 13, and the plurality of connecting members 15 described above are integrally formed of, for example, a synthetic resin material.
- the synthetic resin material may be, for example, only one type of resin material, a mixture containing two or more types of resin materials, or a mixture containing one or more types of resin materials and one or more types of elastomers. You may contain additives, such as an anti-aging agent, a plasticizer, a filler, or a pigment.
- the exterior body 12 includes a first exterior body 25 located on one side in the tire width direction H and a second exterior body 26 located on the other side in the tire width direction H. It is divided.
- the ring-shaped body 13 includes a first ring-shaped body 23 (divided cylinder) located on one side in the tire width direction H and a second ring-shaped body 24 (divided cylinder) located on the other side in the tire width direction H. ) And are divided.
- the ring-shaped body 13 is formed by connecting ends in the tire width direction H of the first and second ring-shaped bodies 23 and 24 (a plurality of divided cylinders) arranged adjacent to each other in the tire width direction H. .
- the exterior body 12 and the ring-shaped body 13 are each divided at the center in the tire width direction H.
- the 1st exterior body 25 and the 1st ring-shaped body 23 are integrally formed with the 1st connection board 21, for example by injection molding, as FIG. 4 shows.
- the second exterior body 26 and the second ring-shaped body 24 are integrally formed with the second connecting plate 22 by, for example, injection molding.
- the unit in which the first exterior body 25, the first ring body 23, and the first connecting plate 21 are integrally formed is referred to as a first divided case body 31, and the second exterior body 26, the second ring body 24, and the like.
- a unit in which the second connecting plate 22 is integrally formed is referred to as a second divided case body 32.
- segmentation case body 31 simultaneously may be sufficient.
- insert molding may be performed in which a part of the first exterior body 25, the first ring-shaped body 23, and the first connecting plate 21 is an insert product and the rest is injection-molded.
- the injection molding may be so-called two-color molding or the like.
- a plurality of protrusions 12a formed on the exterior body 12 may be used as the gate portion.
- the first exterior body 25, the first ring-shaped body 23, and the first connecting plate 21 may be formed of different materials. Alternatively, the same material may be used. Examples of the material include a metal material and a resin material, but a resin material, particularly a thermoplastic resin is preferable from the viewpoint of weight reduction. These points are also the same in the second divided case body 32.
- the center part of the first connecting plate 21 and the second connecting plate 22 in the tire width direction H is the first ring-shaped body.
- 23 and the second ring-shaped body 24 are located on the inner side (center side) in the tire width direction H than the center portion in the tire width direction H.
- the center part of the tire width direction H of the 1st exterior body 25 and the 2nd exterior body 26 is a tire width direction H rather than the center part of the tire width direction H of the 1st connection board 21 and the 2nd connection board 22.
- the present invention is not limited to this, and in each of the first divided case body 31 and the second divided case body 32, the center portion of the first connecting plate 21 and the second connecting plate 22 in the tire width direction H, the first ring-shaped body 23. And at least two of the central portions in the tire width direction H of the second ring-shaped body 24 and the central portions in the tire width direction H of the first exterior body 25 and the second exterior body 26 are identical to each other. You may do it.
- the first ring-shaped body 23 and the second ring-shaped body 24 have end edges facing each other in the tire width direction H connected to each other by, for example, welding, fusing, adhesion, or the like.
- a joining portion 13a is provided in which ends of the second ring-like bodies 23 and 24 in the tire width direction H are connected to each other. In the case of welding, for example, hot plate welding or the like may be employed.
- the first exterior body 25 and the second exterior body 26 are in contact with each other at edges facing each other in the tire width direction H.
- the first divided case body 31 and the second divided case body 32 have the same shape and the same size as shown in FIG. And when connecting the 1st division
- the tread member 16 is formed in a cylindrical shape and integrally covers the outer peripheral surface side of the ring-shaped body 13 over the entire area.
- the inner diameter of the tread member 16 is the same over the entire length in the tire width direction H, and the inner peripheral surface of the tread member 16 is in close contact with the outer peripheral surface of the ring-shaped body 13 over the entire region.
- the inner diameter of the tread member 16 is a distance along the tire radial direction between the inner peripheral surface of the tread member 16 and the axis O.
- the outer peripheral surface of the tread member 16 has a curved surface protruding toward the outer side in the tire radial direction in a cross-sectional view along the tire width direction H as shown in FIG. 5, and the outer diameter of the tread member 16 is As the distance from the maximum outer diameter portion 16a in the tire width direction H increases, the diameter gradually decreases.
- the maximum outer diameter portion 16 a of the tread member 16 is located at the center in the tire width direction H of the non-pneumatic tire 1.
- the thickness along the tire radial direction of the tread member 16 gradually decreases as the tread member 16 moves away from the maximum outer diameter portion 16a in the tire width direction H.
- the outer diameter of the tread member 16 is a distance along the tire radial direction between the outer peripheral surface of the tread member 16 and the axis O.
- the tread member 16 includes a base rubber portion 41 positioned on the inner side in the tire radial direction and a cap rubber portion 42 positioned on the outer side in the tire radial direction from the base rubber portion 41. Both the base rubber part 41 and the cap rubber part 42 extend over the entire circumference of the ring-shaped body 13, and the tread member 16 has a two-layer structure of the base rubber part 41 and the cap rubber part 42.
- the base rubber portion 41 is disposed along the tire width direction H at the maximum outer diameter portion 16a of the tread member 16, and covers the joint portion 13a of the ring-shaped body 13 from the outside in the tire radial direction.
- the size of the base rubber portion 41 in the tire width direction H is smaller than the size of the tread member 16 in the tire width direction H.
- the base rubber portion 41 is disposed at the center portion in the tire width direction H of the tread member 16, and the outer surface of the base rubber portion 41 is linear in a cross-sectional view along the tire width direction H. And the cap rubber part 42.
- the outer peripheral surface of the base rubber portion 41 has a curved surface protruding outward in the tire radial direction in a cross-sectional view along the tire width direction.
- the outer diameter of the base rubber portion 41 is the tire width from the maximum outer diameter portion. As the distance from the direction H increases, the diameter gradually decreases.
- the maximum outer diameter portion of the base rubber portion 41 coincides with the maximum outer diameter portion 16a of the tread member 16 in the tire width direction H.
- the cap rubber portion 42 covers the entire base rubber portion 41, and the base rubber portion 41 is not exposed to either the outer side in the tire radial direction or the outer side in the tire width direction H.
- the outer peripheral surface of the cap rubber portion 42 constitutes the outer peripheral surface of the tread member 16.
- the base rubber part 41 and the cap rubber part 42 are formed symmetrically with respect to the tread center surface C in a cross-sectional view along the tire width direction H.
- the tread center surface C is a virtual plane that passes through the center in the tire width direction H of the tread member 16 and is orthogonal to the axis O.
- the tread member 16 is on the maximum outer diameter portion 16a and the ring-shaped body 13. Passes over the joint 13a.
- the size (thickness) H1 of the base rubber portion 41 along the tire radial direction is larger than the size (thickness) H2 of the cap rubber portion 42 along the tire radial direction. Is also big.
- the size (width) W ⁇ b> 2 of the base rubber portion 41 along the tire width direction H is a portion of the cap rubber portion 42 that is located on both outer sides of the base rubber portion 41 in the tire width direction H. It is smaller than the sum of the sizes (widths) W1 and W3 along the tire width direction H.
- the sum of the size (thickness) H1 along the tire radial direction of the base rubber portion 41 and the size (thickness) H2 along the tire radial direction of the cap rubber portion 42 is the maximum outer diameter of the tread member 16.
- the vertical width of the portion 16a is assumed to be H0.
- the lateral width along the tire width direction H of the tread member 16 is defined as W0, that is, W0 is the size (width) W2 of the base rubber portion 41 along the tire width direction H and the base at the cap rubber portion 42. It is the sum of the respective sizes (widths) W1 and W3 along the tire width direction H of the portions located on both outer sides in the tire width direction H of the rubber portion 41.
- the ratio (W0 / H0) of the lateral width W0 along the tire width direction H of the tread member 16 to the longitudinal width H0 of the maximum outer diameter portion 16a of the tread member 16 is along the tire radial direction of the base rubber portion 41.
- a relationship is established that is larger than the ratio (W2 / H1) of the size (width) W2 of the base rubber portion 41 along the tire width direction H to the size (thickness) H1.
- the base rubber part 41 and the cap rubber part 42 are made of two different types of rubber.
- the base rubber part 41 and the cap rubber part 42 are formed of vulcanized rubber obtained by vulcanizing natural rubber or / and a rubber composition.
- the rigidity of the base rubber part 41 is lower than the rigidity of the cap rubber part 42.
- the rubber hardness Gb of the base rubber portion 41 is lower than the rubber hardness Gc of the cap rubber portion 42.
- the rubber hardness Gb of the base rubber portion 41 and the rubber hardness Gc of the cap rubber portion 42 satisfy 30 ⁇ Gb ⁇ Gc ⁇ 80.
- the rubber hardness Japanese Industrial Standard JIS-A hardness
- the elastic modulus Eb of the base rubber portion 41 is lower than the elastic modulus Ec of the cap rubber portion 42.
- the elastic modulus Eb of the base rubber portion 41 and the elastic modulus Ec of the cap rubber portion 42 satisfy 0.1 MPa ⁇ Eb ⁇ Ec ⁇ 100 MPa.
- the elastic modulus was measured with a tensile tester in accordance with Japanese Industrial Standard JIS K 6254: 2010.
- the rigidity of the base rubber portion 41 located on the inner side in the tire radial direction is the rigidity of the cap rubber portion 42 located on the outer side in the tire radial direction. 6, as shown in FIG. 6, when a load is applied to the tread member 16, the stress generated in the tread member 16 is dispersed in the base rubber portion 41, and the stress is locally applied to the ring-shaped body 13. Concentrated transmission can be suppressed.
- the cap rubber portion 42 having high rigidity is located on the outer side in the tire radial direction with respect to the base rubber portion 41 having low rigidity, the cap rubber portion 42 provides the wear resistance and impact resistance of the tread member 16.
- the running stability of the non-pneumatic tire 1 can also be ensured.
- the wear resistance of the tread member 16 is suppressed by the cap rubber portion 42 while suppressing the stress generated in the tread member 16 from being locally concentrated and transmitted to the ring-shaped body 13 by the base rubber portion 41. And impact resistance can be ensured, and the strength of the non-pneumatic tire 1 can be improved.
- the outer diameter of the tread member 16 is reduced as the distance from the maximum outer diameter portion 16a increases in the tire width direction H.
- the maximum outer diameter portion 16a of the tread member 16 is reduced. Large stress is likely to occur.
- the base rubber portion 41 is disposed along the tire width direction H at the maximum outer diameter portion 16 a of the tread member 16. Therefore, as described above, a large stress generated in the maximum outer diameter portion 16a of the tread member 16 can be dispersed in the base rubber portion 41, and the stress is concentrated and transmitted locally to the ring-shaped body 13. Can be effectively suppressed.
- the ring-shaped body 13 is formed by connecting ends of the plurality of first and second ring-shaped bodies 23 and 24 in the tire width direction H to each other. Further, in the ring-shaped body 13, the joint portion 13 a formed by connecting ends of the plurality of first and second ring-shaped bodies 23 and 24 in the tire width direction H has a lower strength than the other portions. Yes. For this reason, when a large stress is transmitted from the tread member 16 to the joint portion 13a, the ring-shaped body 13 may be seriously damaged starting from the joint portion 13a.
- the base rubber portion 41 covers the joining portion 13a from the outside in the tire radial direction, the stress transmitted from the tread member 16 to the joining portion 13a of the ring-shaped body 13 is dispersed in the base rubber portion 41. Therefore, it is possible to reliably suppress the stress from being concentrated and transmitted to the joint portion 13a, and to effectively prevent the ring-shaped body 13 from being damaged.
- the ring-shaped body 13 is formed by injection molding, and the weld is formed on the ring-shaped body 13, the weld of the ring-shaped body 13 has a lower strength than the other portions. .
- the cap rubber portion 42 covers the entire base rubber portion 41, the base rubber portion 41 is prevented from being exposed to the outside, and for example, the base rubber portion 41 is damaged by directly contacting the road surface. Can be prevented, and the strength can be reliably improved. Further, since the outer peripheral surface of the base rubber portion 41 has a curved shape protruding toward the outer side in the tire radial direction in a cross-sectional view along the tire width direction H, the camber is input to the non-pneumatic tire 1. However, stress can be effectively dispersed in the base rubber portion 41.
- the rubber hardness Gb of the base rubber portion 41 is lower than the rubber hardness Gc of the cap rubber portion 42, the stress generated in the tread member 16 can be effectively dispersed in the base rubber portion 41. Further, since the rubber hardness Gb of the base rubber portion 41 and the rubber hardness Gc of the cap rubber portion 42 satisfy 30 ⁇ Gb ⁇ Gc ⁇ 80, the stress generated in the tread member 16 is more effectively dispersed in the base rubber portion 41. Can be made.
- the elastic modulus Eb of the base rubber part 41 is lower than the elastic modulus Ec of the cap rubber part 42, the stress generated in the tread member 16 can be effectively dispersed in the base rubber part 41. Furthermore, since the elastic modulus Eb of the base rubber portion 41 and the elastic modulus Ec of the cap rubber portion 42 satisfy 0.1 MPa ⁇ Eb ⁇ Ec ⁇ 100 MPa, the stress generated in the tread member 16 is more effective in the base rubber portion 41. Can be dispersed.
- first connecting plate 21 and the second connecting plate 22 are provided as the connecting member 15 respectively.
- a plurality of first connecting plates 21 and a plurality of second connecting plates 22 may be provided on one connecting member 15 with different positions in the tire width direction H.
- a plurality of connecting members 15 may be provided along the tire width direction H between the exterior body 12 and the ring-shaped body 13.
- each end part 21a, 22a of the 1st connection board 21 and the 2nd connection board 22 is connected to the inner peripheral surface of the ring-shaped body 13 by making a tire circumferential direction position mutually differ. Also good.
- a gap in the tire width direction H may or may not be provided between the first exterior body 25 and the second exterior body 26.
- the exterior body 12 and the ring-shaped body 13 may be divided into three or more in the tire width direction H, or may not be divided.
- the exterior body 12, the ring-shaped body 13, and the connection member 15 were integrally formed, for example by injection molding, you may form integrally, for example not only by injection molding but casting. Moreover, after forming the exterior body 12, the ring-shaped body 13, and the connection member 15 separately, you may connect these mutually. Moreover, you may form the exterior body 12 and the attachment body 11 integrally. That is, the exterior body 12 may be included in the attachment body 11. Furthermore, in embodiment mentioned above, it was set as the structure which connects the connection member 15 indirectly to the attachment body 11 via the exterior body 12, However, It is not limited to this, For example, the connection member 15 is directly attached to the attachment body 11. It is good also as a structure to connect.
- the non-pneumatic tire 1 shown in FIGS. 1 to 6 is adopted.
- the tread member 16 is made of the same material as that of the cap rubber portion 42.
- a non-pneumatic tire with a layer structure was adopted.
- the outer diameters of these non-pneumatic tires and the dimensions W1 to W3, H1, and H2 shown in FIG. 5 were all set to the sizes shown in Table 1 below.
- the unit of the value described in the second line of Table 1 is mm.
- the rubber hardness and elastic modulus of each of the base rubber part 41 and the cap rubber part 42 in the non-pneumatic tire 1 of the example were set to the sizes shown in Table 2 below.
- the strength can be improved.
- Non-pneumatic tire 11 Attachment body 13 Ring-shaped body (outer cylinder) 13a Joining part 15 Connecting member 16 Tread member 16a Maximum outer diameter portion 23 First ring-shaped body (divided cylinder) 24 Second ring-shaped body (divided cylinder) 41 Base rubber part 42 Cap rubber part H Tire width direction
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Abstract
Description
本願は、2015年1月15日に、日本に出願された特願2015-005719号に基づき優先権を主張し、その内容をここに援用する。
本発明に係る非空気入りタイヤは、車軸に取り付けられる取り付け体と、取り付け体をタイヤ径方向の外側から囲む外筒体と、取り付け体と外筒体とを連結する連結部材と、外筒体に外装された円筒状のトレッド部材と、を備える非空気入りタイヤであって、トレッド部材は、タイヤ径方向の内側に位置するベースゴム部と、ベースゴム部よりタイヤ径方向の外側に位置するキャップゴム部と、を備え、ベースゴム部の剛性は、キャップゴム部の剛性よりも低い。
図1及び図2に示すように、本実施形態の非空気入りタイヤ1は、図示しない車軸に取り付けられる取り付け体11と、取り付け体11をタイヤ径方向の外側から囲む円筒状のリング状体13(外筒体)と、取り付け体11とリング状体13との間にタイヤ周方向に沿って複数配設されるとともに、取り付け体11とリング状体13とを相対的に弾性変位自在に連結する連結部材15と、リング状体13に外装された円筒状のトレッド部材16と、を備えている。
この場合のサイズとしては、特に限定されないが、例えば155/65R13等としてもよい。
装着筒部17、外リング部18及びリブ19は、例えばアルミニウム合金等の金属材料で一体に形成されている。装着筒部17及び外リング部18は、それぞれ円筒状に形成され、軸線Oと同軸に配設されている。複数のリブ19は、例えば周方向に同等の間隔をあけて配置されている。
外リング部18において、タイヤ周方向で隣り合うキー溝部18a同士の間に位置する部分には、外リング部18をタイヤ径方向に貫通する肉抜き孔18bがタイヤ幅方向Hに間隔をあけて複数形成されている。これら複数の肉抜き孔18bで構成される孔列18cは、タイヤ周方向に間隔をあけて複数形成されている。同様に各リブ19にも、リブ19をタイヤ幅方向Hに貫通する肉抜き孔19aが形成されている。
なお、貫通孔28aは、タイヤ周方向に間隔をあけて板材28に複数形成されている。
同様に、雌ねじ部は、タイヤ周方向に間隔をあけて凹部18dの壁面に複数形成されている。図示の例では、貫通孔28a及び雌ねじ部がそれぞれ2つずつ形成されている場合を例にしているが、2つに限定されない。
そして、外装体12は、突条部12aがキー溝部18aに嵌合された状態で、凹部18dに嵌め込んだ板材28の貫通孔28aを通して図示しないボルトを雌ねじ部に螺合させることにより、取り付け体11に固定されている。
このような構成により、突条部12aはキー溝部18a内にがたつき少なく精度よく嵌合されている。
そして、タイヤ周方向で隣り合う第1連結板21同士は互いに非接触である。同様に、タイヤ周方向で隣り合う第2連結板22同士も互いに非接触である。また、タイヤ幅方向Hで隣り合う第1連結板21及び第2連結板22同士も互いに非接触である。さらに、第1連結板21及び第2連結板22は、タイヤ幅方向Hに沿った横幅及び厚さが互いに同等である。
そして、1つの連結部材15を構成する第1連結板21及び第2連結板22の各一端部21a、22aは、リング状体13の内周面において、タイヤ幅方向Hの位置を互いに異ならせた状態でタイヤ周方向における同一の位置に連結されている。
これら複数の湾曲部21d~21f、22d~22fは、非空気入りタイヤ1をタイヤ幅方向Hから見たタイヤ側面視で、第1連結板21及び第2連結板22が延びる方向に沿って形成されている。図示の例では、第1連結板21における複数の湾曲部21d~21fと、第2連結板22における複数の湾曲部22d~22fとは、上記第1連結板21及び第2連結板22が延びる方向で互いに隣り合うとともに、湾曲方向が互いに逆向きとされている。
具体的には、第1連結板21の一端部21aと他端部21bとを結んだ線と、第2連結板22の一端部22aと他端部22bとを結んだ線とのなす角度が、例えば20°以上135°以下の角度となるように、第1連結板21及び第2連結板22の他端部21b、22bが外装体12の外周面に連結されている。
また、第1連結板21及び第2連結板22それぞれの第1湾曲部21d、22d同士、第2湾曲部21e、22e同士、並びに第3湾曲部21f、22f同士は、互いにタイヤ周方向に突となる向きが逆で、かつ大きさが同等とされている。
図示の例では、外装体12及びリング状体13は、それぞれタイヤ幅方向Hの中央部で分割されている。
以下、第1外装体25、第1リング状体23及び第1連結板21が一体に形成されたユニットを第1分割ケース体31といい、第2外装体26、第2リング状体24及び第2連結板22が一体に形成されたユニットを第2分割ケース体32という。
これらの点は、第2分割ケース体32においても同様である。
これらの点は、第2分割ケース体32においても同様である。
ただしこれに限定されず、第1分割ケース体31及び第2分割ケース体32のそれぞれにおいて、第1連結板21及び第2連結板22のタイヤ幅方向Hの中央部、第1リング状体23及び第2リング状体24のタイヤ幅方向Hの中央部、第1外装体25及び第2外装体26のタイヤ幅方向Hの中央部、のうち少なくとも2つ以上の中央部同士が、互いに一致していてもよい。
同様に、第1外装体25及び第2外装体26は、タイヤ幅方向Hに向かい合う端縁同士が接している。
この場合には、第1外装体25及び第2外装体26は、第1分割ケース体31及び第2分割ケース体32の連結時、タイヤ幅方向Hに向かい合う端縁同士がタイヤ幅方向Hに離間する。従って、取り付け体11に外嵌される外装体12の内周面に例えばバリが生じることを防止することができる。
その後、一体に組み合わせた第1分割ケース体31及び第2分割ケース体32に対して、トレッド部材16を設けることで、非空気入りタイヤ1を得ることができる。
ベースゴム部41は、タイヤ幅方向Hに沿ってトレッド部材16の最大外径部分16aに配置されていて、リング状体13の接合部13aをタイヤ径方向の外側から覆っている。ベースゴム部41のタイヤ幅方向Hの大きさは、トレッド部材16のタイヤ幅方向Hの大きさよりも小さい。また、ベースゴム部41は、トレッド部材16のタイヤ幅方向Hにおける中央部に配置されていて、ベースゴム部41の外面は、タイヤ幅方向Hに沿う断面視で直線状をなすリング状体13と、キャップゴム部42と、により覆われている。ベースゴム部41の外周面は、タイヤ幅方向に沿う断面視で、タイヤ径方向の外側に向けて突の曲面状をなし、ベースゴム部41の外径は、その最大外径部分からタイヤ幅方向Hに離れるに従い漸次縮径している。ベースゴム部41の最大外径部分は、トレッド部材16の最大外径部分16aとタイヤ幅方向Hに一致している。
ベースゴム部41及びキャップゴム部42は、タイヤ幅方向Hに沿う断面視で、トレッドセンター面Cを基準に線対称に形成されている。なおトレッドセンター面Cは、トレッド部材16のタイヤ幅方向Hの中心を通り軸線Oに直交する仮想平面であり、本実施形態では、トレッド部材16の最大外径部分16a上、及びリング状体13の接合部13a上を通過する。
トレッド部材16の最大外径部分16aでは、ベースゴム部41のタイヤ径方向に沿った大きさ(厚さ)H1は、キャップゴム部42のタイヤ径方向に沿った大きさ(厚さ)H2よりも大きい。トレッド部材16の内周面では、ベースゴム部41のタイヤ幅方向Hに沿った大きさ(幅)W2は、キャップゴム部42においてベースゴム部41のタイヤ幅方向Hの両外側に位置する部分それぞれのタイヤ幅方向Hに沿った各大きさ(幅)W1、W3の和よりも小さい。
また、ベースゴム部41のタイヤ径方向に沿った大きさ(厚さ)H1と、キャップゴム部42のタイヤ径方向に沿った大きさ(厚さ)H2の和をトレッド部材16の最大外径部分16aの縦幅をH0とする。さらに、トレッド部材16のタイヤ幅方向Hに沿った横幅をW0とする、つまりW0は、ベースゴム部41のタイヤ幅方向Hに沿った大きさ(幅)W2、および、キャップゴム部42においてベースゴム部41のタイヤ幅方向Hの両外側に位置する部分それぞれのタイヤ幅方向Hに沿った各大きさ(幅)W1、W3の和となっている。ここで、トレッド部材16の最大外径部分16aの縦幅H0に対するトレッド部材16のタイヤ幅方向Hに沿った横幅W0の比(W0/H0)は、ベースゴム部41のタイヤ径方向に沿った大きさ(厚さ)H1に対するベースゴム部41のタイヤ幅方向Hに沿った大きさ(幅)W2の比(W2/H1)よりも大きいという関係が成り立っている。
一方、剛性が高いキャップゴム部42が、剛性が低いベースゴム部41に対してタイヤ径方向の外側に位置しているので、キャップゴム部42によりトレッド部材16の耐摩耗性や耐衝撃性を確保するとともに、非空気入りタイヤ1の走行安定性も確保することができる。
以上のように、ベースゴム部41により、トレッド部材16に生じる応力がリング状体13に局所的に集中して伝達するのを抑制しつつ、キャップゴム部42により、トレッド部材16の耐摩耗性や耐衝撃性を確保することが可能になり、非空気入りタイヤ1の強度を向上させることができる。
ここでベースゴム部41が、タイヤ幅方向Hに沿ってトレッド部材16の最大外径部分16aに配置されている。従って、前述のようにトレッド部材16の最大外径部分16aに生じる大きな応力を、ベースゴム部41において分散させることが可能になり、応力がリング状体13に局所的に集中して伝達するのを効果的に抑制することができる。
ここでベースゴム部41が、接合部13aをタイヤ径方向の外側から覆っているので、トレッド部材16からリング状体13の接合部13aに伝達される応力を、ベースゴム部41において分散させる。従って、応力が接合部13aに集中して伝達されるのを確実に抑制することが可能になり、リング状体13に損傷が生じるのを効果的に抑えることができる。
なお、リング状体13が射出成型により形成される場合であって、リング状体13にウエルドが形成されるときには、リング状体13のうちのウエルドが、他の部分より強度が低くなっている。そのため、ウエルドについても、接合部13aとあわせて、または接合部13aに代えて、ベースゴム部41によりタイヤ径方向の外側から覆うことで、リング状体13に損傷が生じるのを効果的に抑えることができる。
またベースゴム部41の外周面が、タイヤ幅方向Hに沿う断面視で、タイヤ径方向の外側に向けて突の曲面状をなしているので、非空気入りタイヤ1へのキャンバー入力時であっても、ベースゴム部41において応力を効果的に分散させることができる。
さらに、ベースゴム部41のゴム硬度Gb及びキャップゴム部42のゴム硬度Gcが、30<Gb<Gc<80を満たすので、トレッド部材16に生じる応力を、ベースゴム部41において一層効果的に分散させることができる。
さらに、ベースゴム部41の弾性率Eb及びキャップゴム部42の弾性率Ecが、0.1MPa<Eb<Ec<100MPaを満たすので、トレッド部材16に生じる応力を、ベースゴム部41において一層効果的に分散させることができる。
また、外装体12と取り付け体11とを一体に形成してもよい。つまり外装体12を取り付け体11に含めてもよい。
さらに、上述した実施形態では、外装体12を介して連結部材15を取り付け体11に間接的に連結する構成としたが、これに限定されず、例えば取り付け体11に連結部材15を直接的に連結する構成としてもよい。
実施例として、図1~図6で示した非空気入りタイヤ1を採用し、比較例として、実施例の非空気入りタイヤ1において、トレッド部材16が、キャップゴム部42と同一の材料で単層構造とされている非空気入りタイヤを採用した。
これらの非空気入りタイヤの外径、及び図5に示すW1~W3、H1、H2の各寸法は全て、以下の表1に示す大きさに設定した。なお表1の2行目に記載した値の単位は、mmである。
その結果、比較例の非空気入りタイヤに対して、実施例の非空気入りタイヤ1では走行距離が20%長くなったことが確認された。
11 取り付け体
13 リング状体(外筒体)
13a 接合部
15 連結部材
16 トレッド部材
16a 最大外径部分
23 第1リング状体(分割筒)
24 第2リング状体(分割筒)
41 ベースゴム部
42 キャップゴム部
H タイヤ幅方向
Claims (9)
- 車軸に取り付けられる取り付け体と、
前記取り付け体をタイヤ径方向の外側から囲む外筒体と、
前記取り付け体と前記外筒体とを連結する連結部材と、
前記外筒体に外装された円筒状のトレッド部材と、を備える非空気入りタイヤであって、
前記トレッド部材は、タイヤ径方向の内側に位置するベースゴム部と、前記ベースゴム部よりタイヤ径方向の外側に位置するキャップゴム部と、を備え、
前記ベースゴム部の剛性は、前記キャップゴム部の剛性よりも低い非空気入りタイヤ。 - 前記外筒体は、タイヤ幅方向に隣接して配置された複数の分割筒におけるタイヤ幅方向の端部同士が、互いに連結されてなり、
前記ベースゴム部は、前記複数の分割筒におけるタイヤ幅方向の端部同士が連結されてなる接合部を、タイヤ径方向の外側から覆っている請求項1記載の非空気入りタイヤ。 - 前記トレッド部材の外周面は、タイヤ幅方向に沿う断面視で、タイヤ径方向の外側に向けて突の曲面状をなし、前記トレッド部材の外径は、その最大外径部分からタイヤ幅方向に離れるに従い縮径されていて、
前記ベースゴム部は、タイヤ幅方向に沿って前記トレッド部材の最大外径部分に配置されている請求項1または2に記載の非空気入りタイヤ。 - 前記キャップゴム部は、前記ベースゴム部の全体を覆っている請求項1から3のいずれか1項に記載の非空気入りタイヤ。
- 前記ベースゴム部の外周面は、タイヤ幅方向に沿う断面視で、タイヤ径方向の外側に向けて突の曲面状をなしている請求項4記載の非空気入りタイヤ。
- 前記ベースゴム部のゴム硬度Gbは、前記キャップゴム部のゴム硬度Gcよりも低い請求項1から5のいずれか1項に記載の非空気入りタイヤ。
- 前記ベースゴム部のゴム硬度Gb及び前記キャップゴム部のゴム硬度Gcは、30<Gb<Gc<80を満たす請求項6記載の非空気入りタイヤ。
- 前記ベースゴム部の弾性率Ebは、前記キャップゴム部の弾性率Ecよりも低い請求項1から7のいずれか1項に記載の非空気入りタイヤ。
- 前記ベースゴム部の弾性率Eb及び前記キャップゴム部の弾性率Ecは、0.1MPa<Eb<Ec<100MPaを満たす請求項8記載の非空気入りタイヤ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP16737239.0A EP3246178B1 (en) | 2015-01-15 | 2016-01-05 | Non-pneumatic tire |
JP2016569307A JP6727136B2 (ja) | 2015-01-15 | 2016-01-05 | 非空気入りタイヤ |
CN201680005806.7A CN107107663A (zh) | 2015-01-15 | 2016-01-05 | 非充气轮胎 |
US15/543,248 US10449805B2 (en) | 2015-01-15 | 2016-01-05 | Non-pneumatic tire |
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JP2015-005719 | 2015-01-15 | ||
JP2015005719 | 2015-01-15 |
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WO2016114168A1 true WO2016114168A1 (ja) | 2016-07-21 |
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PCT/JP2016/050094 WO2016114168A1 (ja) | 2015-01-15 | 2016-01-05 | 非空気入りタイヤ |
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US (1) | US10449805B2 (ja) |
EP (1) | EP3246178B1 (ja) |
JP (1) | JP6727136B2 (ja) |
CN (1) | CN107107663A (ja) |
WO (1) | WO2016114168A1 (ja) |
Cited By (6)
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WO2017006550A1 (ja) * | 2015-07-03 | 2017-01-12 | 株式会社ブリヂストン | タイヤ |
WO2018207460A1 (ja) * | 2017-05-11 | 2018-11-15 | 株式会社ブリヂストン | 非空気入りタイヤ |
US10166732B2 (en) | 2013-06-15 | 2019-01-01 | Camso Inc. | Annular ring and non-pneumatic tire |
US10953696B2 (en) | 2015-02-04 | 2021-03-23 | Camso Inc | Non-pneumatic tire and other annular devices |
US11179969B2 (en) | 2017-06-15 | 2021-11-23 | Camso Inc. | Wheel comprising a non-pneumatic tire |
US11999419B2 (en) | 2016-12-16 | 2024-06-04 | Camso Inc. | Track system for traction of a vehicle |
Families Citing this family (9)
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FR3031932B1 (fr) * | 2015-01-22 | 2017-02-03 | Michelin & Cie | Dispositif de type pneumatique pour vehicule |
WO2017006551A1 (ja) * | 2015-07-03 | 2017-01-12 | 株式会社ブリヂストン | タイヤ |
US20220048325A1 (en) * | 2018-12-28 | 2022-02-17 | Bridgestone Americas Tire Operations, Llc | Flexible metallic web elements for non-pneumatic tire |
US11273673B2 (en) | 2019-10-25 | 2022-03-15 | The Goodyear Tire & Rubber Company | Modular non-pneumatic support structure |
US11142022B2 (en) | 2019-11-15 | 2021-10-12 | The Goodyear Tire & Rubber Company | Support structure |
US11318791B2 (en) | 2019-11-15 | 2022-05-03 | The Goodyear Tire & Rubber Company | Wheel for a support structure |
US11124024B2 (en) | 2019-11-25 | 2021-09-21 | The Goodyear Tire & Rubber Company | Support structure |
JP2022104244A (ja) * | 2020-12-28 | 2022-07-08 | Toyo Tire株式会社 | 非空気圧タイヤ |
WO2023200434A1 (en) * | 2022-04-13 | 2023-10-19 | Compagnie Generale Des Etablissements Michelin | Non-pneumatic tire for rutwander having varied outer circumference |
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- 2016-01-05 JP JP2016569307A patent/JP6727136B2/ja active Active
- 2016-01-05 CN CN201680005806.7A patent/CN107107663A/zh active Pending
- 2016-01-05 US US15/543,248 patent/US10449805B2/en active Active
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10166732B2 (en) | 2013-06-15 | 2019-01-01 | Camso Inc. | Annular ring and non-pneumatic tire |
US11014316B2 (en) | 2013-06-15 | 2021-05-25 | Camso Inc. | Annular ring and non-pneumatic tire |
US10953696B2 (en) | 2015-02-04 | 2021-03-23 | Camso Inc | Non-pneumatic tire and other annular devices |
WO2017006550A1 (ja) * | 2015-07-03 | 2017-01-12 | 株式会社ブリヂストン | タイヤ |
US11999419B2 (en) | 2016-12-16 | 2024-06-04 | Camso Inc. | Track system for traction of a vehicle |
WO2018207460A1 (ja) * | 2017-05-11 | 2018-11-15 | 株式会社ブリヂストン | 非空気入りタイヤ |
US11179969B2 (en) | 2017-06-15 | 2021-11-23 | Camso Inc. | Wheel comprising a non-pneumatic tire |
Also Published As
Publication number | Publication date |
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JP6727136B2 (ja) | 2020-07-22 |
CN107107663A (zh) | 2017-08-29 |
EP3246178A4 (en) | 2018-02-28 |
US10449805B2 (en) | 2019-10-22 |
EP3246178A1 (en) | 2017-11-22 |
JPWO2016114168A1 (ja) | 2017-11-24 |
US20170368881A1 (en) | 2017-12-28 |
EP3246178B1 (en) | 2019-12-25 |
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