WO2011062241A1 - タイヤ - Google Patents
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- Publication number
- WO2011062241A1 WO2011062241A1 PCT/JP2010/070612 JP2010070612W WO2011062241A1 WO 2011062241 A1 WO2011062241 A1 WO 2011062241A1 JP 2010070612 W JP2010070612 W JP 2010070612W WO 2011062241 A1 WO2011062241 A1 WO 2011062241A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ridge
- decorative element
- decorative
- tire
- mark
- 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
- B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
- B60C13/001—Decorating, marking or the like
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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
- B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
- B60C13/02—Arrangement of grooves or ribs
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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
- B60C5/00—Inflatable pneumatic tyres or inner tubes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
Definitions
- the present invention relates to a tire having a decorative portion on a tire side portion.
- US Pat. No. 5,807,446 discloses an example in which a second ridge is formed in a first ridge to form a side decorative band.
- Japanese Patent Application Laid-Open No. 2008-273505 discloses a side decorative band having a first decorative element composed of only a first ridge and a second decorative element in which the second ridge is arranged in the first ridge.
- An example of forming is disclosed.
- an object of the present invention is to provide a tire that makes the unevenness of the side portion inconspicuous and further improves the appearance of the side portion.
- the tire according to the first aspect includes a decorative portion on a tire side portion, and the decorative portion is inclined with respect to a tire circumferential direction and the decorative element is divided into two or more regions.
- a ridge that discontinuizes the ridge in the tire circumferential direction, and the ridge includes a first ridge and a second ridge having at least one of height and width smaller than the first ridge. And at least some of the first ridges are adjacent to each other while being inclined with respect to the tire circumferential direction, whereby the valley is formed between the adjacent first ridges.
- the tire is usually a pneumatic tire, but may be a solid tire that does not contain air. Further, a part of the first ridge may constitute a decorative element on both sides of the first ridge. Moreover, as long as it is a tire side surface, the decoration part may be provided not only to the tire side part but to the shoulder part and the bead part.
- the decorative portion having the ridge is provided on the tire side portion, the unevenness of the tire portion provided with the decorative portion can be made inconspicuous.
- the ridge formed in this decoration part has the 1st ridge and the 2nd ridge whose at least one of height and width is small compared with the 1st ridge, the presence or absence of reflection of light, A difference in lightness (shadow density) can be effectively produced, and a pneumatic tire can be obtained in which the appearance (designability) of the tire side surface is remarkably improved.
- the valleys reliably prevent the ridges constituting the decorative element from continuing in the tire circumferential direction. Therefore, even if the force spreading in the tire radial direction acts on the tire side portion, the decorative portion formed on the tire side portion is hardly cracked.
- the first ridges are adjacent to each other among the plurality of types of ridges, and valleys are formed between them. Therefore, it is not necessary to make the bottom of the valley lower than the portion where the ridge is not formed. Thereby, the strength of the tire portion forming the valley is remarkably increased.
- the decorative element has an outer edge formed by the first ridge, an inner side of the outer edge is a smooth surface, and an outer edge formed by the first ridge.
- the inner side of the outer edge portion of the first decorative element is a smooth surface, so that the visibility of the first decorative element is hardly deteriorated even if dirt such as soil is attached. Moreover, since the inner side of the outer edge of the first decorative element is a smooth surface, the reflectance of light is high and the reflection angle is uniform, and the silhouette is effectively visually recognized in the second decorative element.
- the second decorative element is composed of at least two types in which directions of the second ridge are different from each other.
- the light reflection direction by the side wall surface of the second ridge can be at least two directions, and the silhouette is visually recognized from at least two directions.
- a decorative element row in which the first decorative elements and the second decorative elements are alternately arranged along the valley is formed, and between the adjacent decorative element rows, the The valleys are continuous along the decorative element row.
- the appearance of the valley is better than when the valley is not continuous. And even if the continuous trough is formed, it is hard to produce a crack in a trough bottom.
- the direction in which the valley extends has an angle of 20 to 90 ° with respect to the tire circumferential direction.
- the angle may be either a clockwise angle or a counterclockwise angle with respect to the tire circumferential direction.
- this angle is smaller than 20 °, the tensile stress generated at the bottom of the valley or the ridge edge tends to increase when a force spreading in the tire radial direction acts on the tire side portion.
- this angle is more preferably 70 ° or less from the viewpoint of suppressing the tensile stress generated at the valley bottom or ridge edge when the force spreading in the tire circumferential direction acts on the tire side portion.
- the bottom width of the valley is not less than 0.2 mm and not more than the longest width of the decorative element.
- valley bottom width is narrower than 0.2 mm, cracks are likely to occur in the valley bottom. Moreover, when the valley bottom width is wider than the longest width of the decorative element, the appearance of the decorative portion is likely to deteriorate.
- the height of the decorative element is 0.1 mm or more and less than 0.3 mm.
- the decoration portion is configured by a combination of a plurality of types of decoration elements, and the plurality of types of decoration elements are A first decorative element formed only by the first ridge that forms the decorative element contour; the first ridge that forms the decorative element contour; and the first ridge disposed in a region partitioned by the first ridge. And a second decorative element having a second ridge with a low height.
- the decorative elements when the decorative elements are adjacent to each other, the decorative elements may share a part of the first ridge.
- the decoration part may be provided not only to the tire side part but to the shoulder part and the bead part.
- the tire is usually a pneumatic tire, but may be a solid tire that does not contain air.
- the unevenness of the tire portion provided with the decorative portion is not conspicuous. Can be made. And since the 2nd ridge whose height is lower than the 1st ridge is arranged in the 2nd decoration element, the presence or absence of reflection of light, the difference of the brightness (shade of shade) can be produced effectively, It can be a pneumatic tire in which the appearance (designability) of the tire side surface is remarkably improved.
- a region surrounded by the first ridge is a smooth surface.
- the light reflectance is high and the light reflection angle is uniform, and the silhouette is effectively visually recognized in the second decorative element.
- the first ridge and the second ridge have different sidewall inclination angles.
- the first decorative element and the second decorative element are periodically arranged in the decorative portion.
- the first ridge is composed of a plurality of linear ridges whose directions are random.
- the first ridge has a higher height than the second ridge, so the appearance is greatly improved. It can be a pneumatic tire.
- the first decorative element and the second decorative element are arranged at least at a part around the mark portion.
- ridges are arranged in a peripheral area excluding the mark in the mark portion, and the mark is displayed on a smooth surface.
- two or more decoration parts are formed on the tire side part, and the decoration parts are arranged on both sides of the mark part in the tire circumferential direction. Is preferable.
- the tire of the fifteenth aspect has a decoration part on a tire side part, the decoration part has a plurality of decoration elements, and the decoration element is formed only by a first ridge that forms a decoration element outline.
- the arrangement of the second ridge is different from that of the first decoration element, the second decoration element composed of the first ridge and the second ridge arranged in the first ridge, as compared with the second decoration element.
- a combination with a third decorative element is included.
- the first to third decorative elements are adjacent to each other, even if the decorative elements share a part of the first ridge, the first to third decorative elements are It will be combined.
- the tire side portion is provided with a decorative portion formed by combining a plurality of such first to third decorative elements, the unevenness of the tire portion provided with the decorative portion is conspicuous. Can be eliminated. And since the arrangement of the second ridge is different between the second decorative element and the third decorative element, it effectively produces the difference in shadow due to the difference in the way light (sunlight, ambient light, etc.) is reflected. Thus, it is possible to obtain a tire in which the appearance (designability) of the tire side portion is remarkably improved.
- the region in the first ridge is a smooth surface.
- the light reflectance is high and the light reflection angle is uniform in the region in the first ridge constituting the first decorative element, and the silhouette is effectively visually recognized in the second decorative element and the third decorative element.
- the extending direction of the second ridge is different between the second decorative element B and the third decorative element.
- the pitch of the second ridge is different between the second decorative element and the third decorative element.
- This is particularly effective in making the lightness difference between the second decorative element and the third decorative element sufficiently visible when the amount of light incident on the tire side portion is small.
- the first decorative element, the second decorative element, and the third decorative element are periodically arranged in the decorative portion.
- the tire of the twentieth aspect includes a mark portion that displays a mark on the side surface of the tire, and the first decorative element and the second decorative element are arranged at least at a part around the mark portion. ing.
- ridges are arranged in a peripheral area of the mark portion excluding the mark, and the mark is displayed on a smooth surface.
- two or more decorative portions are formed and the decorative portions are arranged on both sides in the tire circumferential direction of the mark portion from the viewpoint of making the mark having a high degree of visibility more conspicuous.
- the present invention it is possible to make the tire in which the unevenness of the side portion is inconspicuous and the appearance of the side portion is further improved.
- FIG. 18A It is a partial expanded side view of the side decoration belt of the pneumatic radial tire concerning a 6th embodiment. It is a principal part enlarged view of FIG. 18A. It is the elements on larger scale of the modification of the side decoration belt
- FIG. 1 is a side view of the pneumatic tire 10 according to the present embodiment on the vehicle outer side
- FIG. 2 is a vehicle inner side view of the pneumatic tire 10 according to the present embodiment.
- FIG. 1 (Pneumatic tire vehicle outside) As shown in FIG. 1, two arc-shaped side decorative bands 16 are formed on the side portion 14 on the vehicle outer side of the pneumatic tire 10. Two side decorative strips 16 are formed so as to be arranged at symmetrical positions with the tire central axis C (see FIG. 1) in between. A large number of ridges 18 that are inclined with respect to the tire circumferential direction U are arranged on each side decorative strip 16.
- the side portion 14 is formed with an arc-shaped mark portion 20 between one side decorative strip 16J and the other side decorative strip 16K. Accordingly, the two mark portions 20 are also formed so as to be arranged at symmetrical positions with the tire central axis C in between.
- the mark 22 is displayed with characters “ABCDEFGH” displayed on a smooth surface, for example.
- a decorative part 24 is formed between the side decorative band 16 and the mark part 20. Therefore, the decoration part 24 is formed in four places.
- the decoration part 24 is composed of two decoration halves 24A and 24B adjacent to each other in the tire circumferential direction U.
- the decorative halves 24A and 24B are both parallelogram-shaped, but the decorative halves 24A are slightly located on the tire outer peripheral side, and the decorative halves 24B are slightly located on the tire inner peripheral side.
- the decorative halves 24A and 24B both have a first ridge 26 extending in a direction inclined at an inclination angle ⁇ of about 45 ° with respect to the tire circumferential direction U, and a first ridge 26 A second ridge 28 having at least one of a height and a width smaller than that and a valley 32 extending in a direction inclined with respect to the tire circumferential direction U are formed.
- the valley 32 is formed between the first ridges 26 adjacent to each other.
- the valley 32 divides the decorative elements forming the decorative half 24A into a plurality of regions, and the same applies to the decorative half 24B.
- the two first ridges 26P form two wavy troughs 32P that are inclined with respect to the tire circumferential direction U, and the two first ridges 26Q are inclined with respect to the tire circumferential direction U.
- one wavy trough 32Q extending is formed.
- the valley 32P is continuous from one end to the other end of the decorative halves 24A and 24B.
- a plurality of three-type first ridges 26P are arranged at equal intervals, and a plurality of two-type first ridges 26Q are also arranged at equal intervals.
- a decorative element row 34P is formed along the three-type first ridge 26P (that is, along the valley 32P) between the adjacent three-type first ridges 26P. In the decorative element row 34P, the first decorative elements 36 and the second decorative elements 38 are alternately arranged.
- the first decorative element 36 is a decorative element whose outer edge is formed by the first ridge 26 and whose inner side is formed by the smooth surface 37.
- the second decorative element 38 is a decorative element having an outer edge portion formed by the first ridge 26 and a plurality of second ridges 28 arranged in parallel to each other inside the outer edge portion.
- the second ridge 28 is a ridge that extends linearly from the lower left of the drawing to the upper right of the drawing.
- a decorative element row 34Q is formed along the two-type first ridges 26Q (that is, along the valleys 32Q).
- the arrangement of the smooth surfaces 37 and the second ridges 28 is set in a staggered manner so that the first decorative elements 36 and the second decorative elements 38 are alternately arranged in the decorative element row 34Q.
- FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG.
- the first ridge 26 is trapezoidal in cross section.
- the width B1 of the plane 26F that forms the top of the first ridge 26 is 0.2 mm at the maximum.
- the angle ⁇ formed by the slope (side wall) 26S of the first ridge 26 with respect to the normal direction N of the side portion 16 is 45 °.
- the height h1 of the first ridge 26 is 0.2 mm.
- the interval (pitch) P between adjacent first ridges is 1.0 mm, and the bottom width W1 of the adjacent first ridges 26 is 0.4 mm.
- the maximum height hM of the ridge 26 is 0.25 mm). If the bottom width W1 is 0.2 mm or more, it is possible to make a structure in which cracks are unlikely to occur at the bottom of the valley 32, and this dimension example can sufficiently prevent the occurrence of cracks.
- the second ridge 28 is also trapezoidal in cross section.
- the second ridge 28 can be configured such that the height of the second ridge 28 is lower than that of the first ridge 26, or the width of the plane forming the top of the second ridge 28 is narrower than that of the first ridge 26. Further, the second ridge 28 can be configured such that the height of the second ridge 28 is lower than that of the first ridge 26 and the width of the plane forming the top of the second ridge 28 is narrower than that of the first ridge 26.
- the preferable dimension range of the first decorative element 36 and the second decorative element 38 is a range in which the tire circumferential direction length is 2 to 10 mm and the tire radial direction length is 2 to 10 mm.
- the pitch of the second ridges 28 is preferably 0.5 mm or more from the viewpoint of preventing cracks between the adjacent second ridges 28 and 1.5 mm or less from the viewpoint of appearance. preferable.
- the first ridge 26 and the second ridge 28 can be formed at the time of vulcanization by forming a recess in advance on the inner wall surface of a mold for vulcanization molding of a raw tire.
- a second recess 42 for forming the second ridge 28 is formed on the inner wall 48 of the mold for forming the second decorative element 38 by using a drill ( Further, a first recess 44 for forming the first ridge 26 is formed (see FIG. 7B).
- the drill for forming the second ridge 26 is replaced with the first recess formation scheduled portion 44Y.
- Move while shaving For example, after one second concave portion 42M is formed by drilling to the end portion, the first concave portion forming planned portion 44Y is moved to the end portion position of the adjacent second concave portion forming position while being drilled, and the next second Two recesses 42N are formed.
- the first recess 44 is formed with a drill.
- the first concave portion 44Y is formed in the first concave portion formation planned portion 44Y, and no trace remains when the first concave portion formation planned portion 44Y is shaved with a drill forming the second concave portion 42. .
- the 2nd recessed part 42 can be formed in a short time like one stroke writing.
- the side portion 54 on the vehicle inner side of the pneumatic tire 10 has two arc-shaped side decoration bands 16 and two arc-shaped mark portions, like the side portion 14 on the outer side of the vehicle. 20 is formed.
- a decorative portion 64 is formed between one side decorative band 16 and the mark portion 20. Accordingly, the decorative portions 64 are formed at two locations on both ends in the tire circumferential direction of the one side decorative strip 16.
- a decorative portion 66 is also formed between the other side decorative band 16 and the mark portion 20. Accordingly, the decorative portions 66 are formed at two locations on both ends in the tire circumferential direction of the other side decorative band 16.
- the decoration part 64 is configured by two decoration halves 64A and 64B adjacent to each other in the tire circumferential direction U.
- the decorative half portions 64A and 64B are both parallelogram-shaped in shape, but the decorative half portion 64A is located slightly on the tire outer peripheral side, and the decorative half portion 64B is slightly located on the tire inner peripheral side.
- the decoration halves 64A and 64B both have a first ridge 76 extending substantially linearly in a direction inclined with respect to the tire circumferential direction U, and a height compared to the first ridge 76.
- variety is small and the trough 82 extended in the direction inclined with respect to the tire circumferential direction U are formed.
- the valley 82 is formed between the first ridges 76 adjacent to each other.
- the valley 82 is formed between the first ridges 76 adjacent to each other.
- the valley 82 divides the decorative elements forming the decorative half 64A into a plurality of regions, and the same applies to the decorative half 64B.
- the first ridge 76 extends in a direction inclined at an inclination angle ⁇ of about 60 ° with respect to the tire circumferential direction U.
- two double-type first ridges 76Q extending in parallel from the lower left side of the drawing to the upper right side of the drawing in FIG. 4A are formed.
- the first ridge 76 is configured.
- a trough 82 that is inclined with respect to the tire circumferential direction U is formed between the parallel first ridges 76 constituting the two-type first ridge 76Q.
- the valley 82 is continuous from one end to the other end of the decorative halves 64A and 64B.
- a plurality of two-type first ridges 76Q are arranged at equal intervals.
- a decorative element row 84 is formed along the valley 82 between the adjacent two-type first ridges 76Q. In the decorative element row 84, the first decorative elements 86 and the second decorative elements 88 are alternately arranged.
- the first decorative element 86 and the second decorative element 88 include a regular triangle 92 convex outward in the radial direction (hereinafter referred to as an outward regular triangle 92), or a regular triangle 94 convex inward in the radial direction. (Hereinafter referred to as an inward regular triangle 94).
- the first decorative element 86 is formed by a first ridge 76 forming an outer edge of an isosceles triangle having a central angle of 120 °, and an isosceles triangle-shaped smooth surface 77 formed in the first ridge 76.
- the second decorative element 88 includes a first ridge 76 that forms an outer edge of an isosceles triangle having a central angle of 120 °, and a second ridge 78 that is arranged in the first ridge 76.
- the second ridge 78 extends in the tire radial direction R.
- the outward regular triangle 92 (see FIG. 4B) is composed of two first decorative elements 86 adjacent to each other and one second decorative element 88.
- the two first decorative elements 86 share the first ridge 76P at portions adjacent to each other, and the first ridge 76P constitutes both the first decorative elements 86.
- the inward regular triangle 94 (see FIG. 4C) is composed of one first decorative element 86 and two second decorative elements 88.
- the two second decorative elements 88 share the first ridge 76P at portions adjacent to each other, and the first ridge 76P constitutes both of the second decorative elements 88.
- the outward regular triangles 92 and the inward regular triangles 94 are alternately arranged along the valleys 82.
- the decoration portion 66 includes two decoration halves 66A and 66B adjacent to each other in the tire circumferential direction U.
- the decoration halves 66A and 66B are both parallelogram-shaped, but the decoration half 66A is located slightly on the tire outer periphery side, and the decoration half 66B is slightly positioned on the tire inner periphery side.
- a lattice-like ridge 98 is formed by a ridge extending from the lower right of the paper to the upper left of the paper and a ridge extending from the lower left of the paper to the upper right of the paper.
- the unevenness of the tire portion provided with the decorative portion can be made inconspicuous.
- the ridge formed in the decorative portion 64 includes a first ridge 26 and a second ridge 28 having at least one of a height and a width smaller than that of the first ridge 26.
- the ridge formed in the decorative portion 64 includes a first ridge 76 and a second ridge 78 having at least one of height and width smaller than that of the first ridge 76. Therefore, the presence or absence of light reflection and the difference in lightness (shadow density) can be effectively produced, and a pneumatic tire can be obtained in which the appearance (designability) of the tire side face is remarkably improved.
- the decoration part 24 of the side part 14 outside the vehicle is formed on the both sides of the plurality of valleys 32 (32P, 32Q) inclined with respect to the tire circumferential direction U and the valleys 32.
- first ridges 26 are adjacent to each other while being inclined with respect to the tire circumferential direction U, valleys 32 are formed between the adjacent first ridges 26. Therefore, it is not necessary to make the bottom of the valley 32 lower than the flat portion such as the smooth surface 37. Therefore, the strength of the tire portion forming the valley 32 is sufficiently high.
- the inner side of the outer edge portion of the first decorative element 36 is a smooth surface 37, the visibility of the first decorative element 36 is unlikely to deteriorate even if dirt such as dirt is attached. Further, the smooth surface 37 has a high light reflectance and a uniform reflection angle, and the silhouette is effectively visually recognized by the second decorative element 38. And, compared with the case where a ridge is formed inside the first decorative element 36, the number of processing steps for a mold or the like can be reduced by using the smooth surface 37.
- decorative element rows 34P and 34Q are formed in the decorative portion 24.
- the first decorative elements 36 and the second decorative elements 38 are alternately arranged along the valleys 32P, and in the decorative element row 34Q, the first decorative elements 36 and the second decorative elements 38 are arranged. They are arranged alternately along the valley 32Q.
- the trough 32 (32P, 32Q) is extended so that it may continue from the edge part of an ornamental element row
- the valley 32 forms an angle ⁇ of about 45 ° with respect to the tire circumferential direction U, even if a force spreading in the tire radial direction R or a force spreading in the tire circumferential direction U acts on the side portion 14, It is possible to sufficiently prevent the tensile stress generated at the bottom and the ridge bottom edge (particularly the ridge bottom edge of the first ridge 26) from becoming large.
- the angle ⁇ is not limited to 45 °, and the angle ⁇ is in the range of 20 to 90 °, so that when the force spreading in the tire radial direction R acts on the side portion 14, the bottom of the valley 32 or the ridge The tensile stress generated at the edge can be effectively reduced.
- the angle ⁇ is more preferably 70 ° or less.
- a plurality of valleys 82 that are inclined with respect to the tire circumferential direction U are also formed on the decorative portion 64 of the side portion 54 on the vehicle inner side, and the first decorative element 86 and the second decorative element 88 are between the adjacent valleys 82. It is formed, and the same effect as the decoration part 24 of the side part 54 inside a vehicle is show
- the bottom width of the valley 32 is 0.2 mm or more and not more than the longest width of the first decorative element 36 and the second decorative element 38. Thereby, it can be set as the structure where a crack is hard to produce in the bottom of the trough 32, without deteriorating the external appearance property of the decoration part 24.
- FIG. The same applies to the valley 82.
- the heights of the first decorative element 36 and the second decorative element 38 are preferably 0.1 mm or more and less than 0.3 mm. .
- production of the decoration part 24 can fully be prevented, without reducing the visibility of the 1st decoration element 36 and the 2nd decoration element 38.
- FIG. The same applies to the first decorative element 86 and the second decorative element 88.
- a pattern may be formed with a ridge or the like instead of the smooth surfaces 37 and 77.
- the second ridge 79 may be arranged in place of the smooth surface 37 (see FIG. 3).
- the second ridge 79 is arranged so that the direction of the second ridge 79 is different from that of the second ridge 28 by about 90 °.
- the light reflection direction differs between the second ridge 28 and the second ridge 79 by about 90 °. Therefore, since the shade of the shadow due to the difference in the viewing direction changes regularly, the appearance (designability) of the tire side surface is further improved.
- the decorative portions 24 are formed at four locations on the side portion 14 on the vehicle outer side, and the decorative portions 64 are formed on both ends in the tire circumferential direction of one side decorative strip 16 on the side portion 54 on the vehicle inner side.
- the decorative portions 66 are formed on both ends in the tire circumferential direction of the other side decorative band 16 has been described, the present invention is not limited thereto, and the decorative portion 24 and the decorative portions are provided on the side portion 14 outside the vehicle.
- the part 64 may be arranged, and the number of decoration parts may be more than four or less.
- FIG. 9 is a side view of the pneumatic tire 100 according to the present embodiment.
- the side portion 114 of the pneumatic tire 100 has an arc-shaped side decoration band 116 (FIG. 9, FIG. 9) formed by combining a plurality of first decoration elements 120 and second decoration elements 122. 10) is formed.
- the 1st decoration element 120 is formed only by the 1st ridge 126 which forms the outline of the smooth surface area
- the second decorative element 122 includes a first ridge 126 that forms a contour, and a second ridge 128 that is arranged in the first ridge 126 and has a lower height than the first ridge 126.
- the first decorative element 120 and the second decorative element 122 that are adjacent to each other share the first ridge 126.
- the two side decoration bands 116 are formed so as to be arranged at symmetrical positions with the tire central axis C (see FIG. 9) in between.
- an arc-shaped mark portion 130 is formed on the side portion 114 so as to be adjacent to one side decorative strip 116 and the other side decorative strip 116 at both ends. Accordingly, the two mark portions 130 are also formed so as to be arranged symmetrically with respect to the tire central axis C.
- the mark 132 is displayed by, for example, characters “ABCDEF” displayed on a smooth surface.
- a large number of ridges 134 are arranged in the surrounding area 136 excluding the mark 132 in the mark portion 130.
- the first decorative element 120 and the second decorative element 122 are periodically arranged on the side decorative band 116. More specifically, in the side decorative strip 116, the first decorative element 120 and the second decorative element 122 are alternately (in a checkered pattern) arranged in the tire circumferential direction U and the tire radial direction R. The concept of alternately arranging the first decorative elements 120 and the second decorative elements 122 in this way will be described with reference to FIG. As shown in FIG. 11, in this embodiment, the arrangement positions of the first decorative element 120 and the second decorative element 122 are shifted from each other.
- the smooth surface region 124 surrounded by the first ridge 126 of the first decorative element 120 includes a substantially rectangular elongated portion 124L elongated in the tire circumferential direction U, and a tire circumferential direction central portion of the elongated portion 124L inward in the tire radial direction. It is comprised with the substantially square-shaped extension part 124T extended toward the direction. Since the first ridge 126 forms the contour of the smooth surface region 124, the first decorative element 120 has a shape displaying a “convex” directed inward in the tire radial direction.
- the second decorative element 122 has a shape that displays “convex” toward the outer side in the tire radial direction.
- the second ridge 128 constituting the second decorative element 122 is a ridge extending in the tire radial direction R.
- the side decorative bands 116 in which the first decorative elements 120 and the second decorative elements 122 are alternately arranged in the tire circumferential direction U and the tire radial direction R are formed on the side portions 114.
- the first decorative element 120 is formed by only the first ridge 126 that forms the contour of the smooth surface area 124.
- the second decorative element 122 is configured by an arrangement of second ridges 128 having a height lower than that of the first ridge 126.
- the first ridge 126 serves as an outer frame of the decorative pattern, and the second ridge 126
- the ridge 128 plays a role of improving visibility.
- the first decorative element 120 and the second decorative element 122 are alternately and continuously formed, so that the unevenness of the portion where the side decorative band 116 is formed can be made inconspicuous,
- the second ridge pattern can effectively produce the presence / absence of light reflection and brightness (shadow density), and the smooth surface area 124 has the same reflection direction, so the glossiness is clear and gives a high-class feeling.
- appearance (design) is improved. This is particularly noticeable when the side decorative strip 16 is coated with wax. Since the first ridge 126 is higher than the second ridge 128, the appearance is remarkably improved as compared with the case where the height is the same. Note that different dimensions between the first ridge 126 and the second ridge 128 can be realized by varying the processing depth when forming the ridge by cutting or etching.
- first decorative element 120 and the second decorative element 122 have the same shape except that their directions are opposite, uniformity and regularity appear in the side decorative band 116, and the side decorative band 116 A further effect is obtained in making the unevenness inconspicuous.
- first decorative element 120 and the second decorative element 122 are periodically arranged (arranged in a checkered pattern) on the side decorative band 116. Therefore, the appearance (designability) is excellent. Further, a difference in brightness due to the presence or absence of the second ridge 128 is clearly generated at the boundary formed by the first ridge 126, and the visibility of the side decorative band 116 formed by the first decorative element 120 and the second decorative element 122 is visible. Is further improved.
- the pneumatic tire 100 includes a mark portion 130 on the tire side surface.
- the mark portion 130 displays the mark 132 and the first decorative element 120 and the second decoration at both ends. Each is adjacent to element 122. Therefore, the visibility of the mark part 130 is improved, that is, the visibility of the mark 132 is improved.
- the mark 132 is displayed on a smooth surface, and a ridge 134 (for example, a straight or curved ridge) is arranged in the surrounding area 136 excluding the mark 132 in the mark portion 130.
- a ridge 134 for example, a straight or curved ridge
- the direction in which the second ridge 128 extends is the tire radial direction R.
- the present invention is not limited to this and may be a direction crossing the tire radial direction R.
- FIG. 12 is a cross-sectional view taken along the line 4-4 in FIG.
- the first ridge 126 has a trapezoidal cross section.
- the width B10 of the plane 126F that forms the top of the first ridge 126 is 0.2 mm at the maximum.
- the angle ⁇ 1 formed by the slope (side wall) 126S of the first ridge 126 with respect to the normal direction N of the side decorative strip 116 is 45 °.
- the height h10 of the first ridge 126 is 0.2 mm.
- the height h30 of the partition ridge 138 that extends in the tire radial direction R and separates the side decoration band 116 and the mark portion 130 is 0.4 mm.
- the second ridge 128 is also trapezoidal in cross section.
- the width B20 of the plane 28F that forms the top of the second ridge 128 is also 0.2 mm at the maximum.
- the angle ⁇ 2 formed by the slope 128S of the second ridge 128 with respect to the normal direction N of the side decorative strip 116 is 35 °.
- the height h20 of the second ridge 128 is 0.15 mm.
- the interval d20 between the adjacent second ridges 128 is 0.6 mm.
- the slope 126S of the first ridge 126 and the slope 28S of the second ridge 128 are different in inclination angle ( ⁇ 1 and ⁇ 2 are different), so that the first ridge 126 serves as an outer frame of the decorative pattern.
- the second ridge 128 can further clearly play the role of improving the visibility of the pattern. This is further manifested by the relationship of h10> h20 and ⁇ 1> ⁇ 2.
- the height h10 of the first ridge 126 is higher than the height h20 of the second ridge 128, these dimensions are within the range of ⁇ 50% of the values exemplified here, preferably within the range of ⁇ 30%. If there is, sufficient effects such as visibility and durability can be obtained.
- the first decorative element 150 and the second decorative element 152 are spaced apart from each other on the side decorative band 116 of the side portion 114 of the pneumatic tire 100 shown in FIG. Has been.
- the first decorative element 150 is the same as the first ridge 126 in the vertical direction (tire radial direction R) in the drawing as compared to the first decorative element 120 described in the second embodiment.
- the first ridge 156 is formed around the smooth surface region 154.
- the second decorative element 152 is formed with a first ridge 158 having a cross-sectional dimension that is the same as that of the first ridge 126 as compared with the second decorative element 122 described in the second embodiment.
- the second ridge 128 is arranged in the first ridge 156.
- the first ridges 156 and 158 serve as an outer frame of the decorative pattern, and the second ridge 128 serves to improve visibility.
- the second ridge pattern can effectively produce the presence / absence of light reflection and lightness (shadow density), and the smooth surface area 154 has the same reflection direction, thereby improving the appearance (design). Can do.
- the first decorative element 170 and the second decorative element 172 are provided on the side portion 114 of the pneumatic tire 100 shown in FIG.
- a plurality of arc-shaped side decorative bands 166 are formed in combination.
- Two side decorative strips 166 are formed so as to be arranged symmetrically with respect to the tire central axis.
- the circular-arc-shaped mark part 130 is formed in the side part.
- a regular triangle 162 (hereinafter referred to as an outward regular triangle 162) convex outward in the radial direction between the first decorative element and the second decorative element, or A regular triangle 164 that protrudes radially inward (hereinafter referred to as an inward regular triangle 164) is formed.
- the first decorative element 170 is formed by only the first ridge 176 that forms the contour of the smooth surface region 174 having an isosceles triangle shape with a central angle of 120 °.
- the second decorative element 172A includes a first ridge 176 that forms a contour, and a second ridge 178 that is arranged in the first ridge 176 and has a lower height than the first ridge 176.
- the second ridge 178 extends in the tire radial direction R.
- the outward regular triangle 162 (see FIG. 14B) includes two first decorative elements 170 adjacent to each other and one second decorative element 172A.
- the second decorative element 172A is formed in an area of the outward regular triangle 162 excluding the first decorative element 170. Therefore, the shape of the second decorative element 172A is an isosceles triangle having the same dimensions as the first decorative element 170.
- the two first decorative elements 170 share the first ridge portion 176P at portions adjacent to each other, and the first ridge portion 176P constitutes both the first decorative elements 170.
- the inward regular triangle 164 (see FIG. 14C) is composed of one first decorative element 170 and one second decorative element 172B. Also in the inward regular triangle 164, the second decorative element 172B is formed in a region of the inward regular triangle 164 excluding the first decorative element 170. A second ridge 178 having a lower height than the first ridge 176 is arranged in the second decorative element 172B. In the present embodiment, the second decorative element 172B extends linearly from the center of the inward regular triangle 164 (that is, the vertex of the isosceles triangle formed by the first decorative element 170), and the second ridge 178 is formed. A dividing ridge 186 is formed that bisects the region being formed. The sectional ridge 186 has the same cross-sectional dimension as the first ridge 176. Therefore, the second decorative element 172B is visually recognized as two adjacent decorative elements 172A constituting the outward regular triangle 162 being adjacent to each other.
- the outward regular triangle 162 and the inward regular triangle 164 are arranged in a staggered arrangement in the tire radial direction R and the tire circumferential direction U. That is, the outward regular triangle 162 and the inward regular triangle 164 are alternately arranged in the tire circumferential direction U and are also alternately arranged in the tire radial direction R.
- the concept of alternately arranging the outward regular triangle 162 and the inward regular triangle 164 in this way will be described with reference to FIG. As shown in FIG. 15, in the present embodiment, the arrangement positions of the first outward regular triangle 162 and the inward regular triangle 164 are shifted.
- the first decorative element 170 and the second decorative elements 172A and 172B are periodically arranged on the side decorative band 116. According to this embodiment, the same effect as that of the second embodiment can be obtained.
- FIG. 16 a plurality of first decorative elements 200 and a plurality of second decorative elements 202 are combined with the side portions 114 of the pneumatic tire 100 shown in FIG. 205 is formed.
- Two side decoration bands 205 are formed so as to be arranged at symmetrical positions with the tire central axis in between.
- the arc-shaped mark part 130 (refer FIG. 9) is formed in the side part similarly to 2nd Embodiment or 3rd Embodiment.
- the first decorative element 200 is formed only by the first ridge 206 that forms the contour of the smooth surface region 204.
- the first ridge 206 is composed of a plurality of linear ridges whose directions are random.
- the second decorative element 202 includes a first ridge 206 that forms a contour, and a second ridge 208 that is arranged in the first ridge 206 and has a height lower than that of the first ridge 206.
- the second ridges 208 all extend in the tire radial direction R.
- first decorative element 200 and the second decorative element 202 in this way will be described with reference to FIG. As shown in FIG. 17, in this embodiment, there is no concept of particularly shifting the arrangement positions of the first ridge 206 constituting the first decorative element 200 and the second ridge 208 constituting the second decorative element 202.
- first ridge 206 so as to form each first decorative element 200
- a side decorative band unit 205U constituting the side decorative band 205 is formed.
- the side decorative band units 205U is formed.
- the first ridge 206 is higher in height than the second ridge 208 even with a simple configuration in which the arrangement positions of the first decorative element 200 and the second decorative element 202 are not periodically aligned. Compared with the case where the height is the same, the appearance is remarkably improved as in the second embodiment.
- this side decorative band unit 205U is continuously arranged in the tire circumferential direction U. That is, the side decorative band 205 formed by periodically arranging the side decorative band units 205U in the tire circumferential direction U seems to have the first decorative element 200 and the second decorative element 202 having a random shape arranged without periodicity. Visible to. Accordingly, the side decorative band 205 that is visually recognized without periodicity can be manufactured significantly more easily than when the decorative elements are randomly arranged over the entire side decorative band without forming the side decorative band unit 205U. .
- FIGS. 18A and 18B an arc shape formed by combining a plurality of first decorative elements 220 and second decorative elements 222 on the side portion 114 of the pneumatic tire 100 shown in FIG.
- Side decoration band 216 is formed.
- Two side decorative strips 216 are formed so as to be arranged at symmetrical positions with the tire central axis in between.
- the arc-shaped mark part 130 (refer FIG. 9) is formed in the side part similarly to 2nd Embodiment or 3rd Embodiment.
- a peripheral ridge 224 is formed on each of the peripheral edge portions on the outer side and the inner side in the tire radial direction of the side decorative band 216.
- the first decorative element 220 includes a first ridge 246 that divides a region and a second ridge 248 arranged in the first ridge 246.
- the first ridge 246 has a slightly elongated shape, and includes an outer ridge 250 and an inner ridge 252 formed on the inner side of the outer ridge 250 at an equal interval.
- the outer ridge 250 is formed on both sides in the longitudinal direction and has an outer convex portion 250T that is curved convex toward the outside, and is formed on both sides in the short direction and curved convex toward the inside, that is, outward.
- an outer concave portion 250D that is a curved concave shape.
- the inner ridge 252 is also formed on both sides in the longitudinal direction and has an inner convex portion 252T that is curved convex toward the outer side, and an inner concave portion 252D that is formed on both sides in the lateral direction and has a curved concave shape with respect to the outer side. Consists of.
- the second ridge 248 is a ridge that extends linearly in the longitudinal direction of the first decorative element 220.
- the second decorative element 222 has the same shape as the first ridge 246 of the first decorative element 220 and is arranged so that the directions of the first decorative element 220 are different from each other by 90 °, and the second ridge 248 is not formed. .
- the components of the second decorative element 222 (the first ridge 246 and the second ridge 248) will be described using the same reference numerals as those of the first decorative element 220.
- the first decorative element 220 and the second decorative element 222 are periodically arranged on the side decorative band 216. More specifically, in the side decorative band 216, the first decorative elements 220 and the second decorative elements 222 are alternately arranged (in a checkered pattern) in the tire circumferential direction U and the tire radial direction R.
- the dimensions of the outer convex portion 250T and the outer concave portion 250D are set in advance so that the outer ridge 250 of the first decorative element 220 and the outer ridge 250 of the second decorative element 222 are connected without forming a corner. (For example, when the outer convex portion 250T and the outer concave portion 250D have an arc shape, the radius of curvature and the arc length of the outer convex portion 250T and the outer concave portion 250D are set in advance).
- the side decoration band 216 in which the first decoration elements 220 and the second decoration elements 222 are alternately arranged in the tire circumferential direction and the tire radial direction R is formed on the side portion 114.
- the first decorative element 220 includes a curved first ridge 246 that divides a region, and a linear second ridge 248 arranged in the first ridge 246.
- the second decorative element 222 has the same shape as the first ridge 246 of the first decorative element 220 and has a 90 ° difference in orientation.
- the first ridge 246 serves as an outer frame of the decorative pattern, and the second ridge 248 serves to improve visibility.
- the first decoration elements 220 and the second decoration elements 222 are alternately and continuously arranged periodically, so that uniformity and regularity appear in the side decoration band 216, and the side decoration band 216. It is possible to make the unevenness of the portion where is formed inconspicuous.
- the first ridge 246 has a curved shape, this effect becomes more remarkable.
- the outer ridge 250 of the first decorative element 220 and the outer ridge 250 of the second decorative element 222 are continuous so as not to form corners, the effect of visualizing uniformity and regularity can be further obtained. ing.
- the extending center direction of the first ridge 246 is different by 90 ° and the extending direction of the second ridge 248 is also different by 90 °.
- the appearance (designability) of the tire side surface is further improved.
- each first ridge 246 of the first decorative element 220 and the second decorative element 222 is curved. Thereby, the light incident from one direction can be reflected in a wide angle range, and the unevenness of the tire portion can be made less noticeable.
- the same effect can be obtained even when the first decorative element or the second decorative element rotated by 45 ° clockwise as viewed in FIG. 19 is formed as the side decorative band 266. Can play. Further, as shown in FIG. 19, the outer ridges are arranged only on opposite sides of the first decorative element and the second decorative element to form an outer ridge 268 that appears to extend in a wavy shape along one direction. May be.
- a side decorative band 276 is formed on the side portion 114 of the pneumatic tire 100 shown in FIG.
- the side decorative band 276 is provided with a band-shaped smooth surface 280 that is inclined 30 ° clockwise relative to the tire radial direction between adjacent decorative elements.
- the effect of improving the appearance due to the strip-shaped smooth surface 280 is also exhibited.
- FIG. 21 is a side view of the pneumatic tire 300 according to the present embodiment.
- the side portion 314 of the pneumatic tire 300 has an arc-shaped side decoration formed by combining a plurality of first decorative elements A1, second decorative elements B1, and third decorative elements C1.
- a band 316 (see FIGS. 21 and 22A) is formed.
- Two side decorative strips 316 are formed so as to be arranged symmetrically with respect to the tire central axis CE (see FIG. 21).
- An arc-shaped mark portion 330 is formed on the side portion 314 so as to be adjacent to one side decorative strip 316 and the other side decorative strip 316 at both ends. Accordingly, the two mark portions 330 are also formed so as to be arranged symmetrically with respect to the tire central axis CE.
- the mark 332 is displayed with characters “ABCDEFGH” displayed on a smooth surface, for example.
- a large number of ridges 334 are arranged in the surrounding area 336 of the mark portion 330 excluding the mark 332.
- first decorative elements A1, second decorative elements B1, and third decorative elements C1 are periodically combined.
- Two side decoration bands 316 are formed so as to be arranged at symmetrical positions with the tire central axis in between.
- 1st decoration element A1 is formed only by the 1st ridge 346 which forms the outline of the rhombus-shaped smooth surface area
- the second decorative element B1 includes a first ridge 346 that forms an outline of a parallelogram-shaped region that rises to the left in the drawing, and a second ridge 349 that is arranged in the first ridge 346 so as to extend in the upper left direction on the drawing. Composed.
- the reflected light on the surface of the second ridge 349 the reflected light when the light is incident from the normal direction of the surface is most brightly visible.
- the third decorative element C1 includes a first ridge 346 that forms an outline of a parallelogram-shaped region that rises to the right in the drawing, and a second ridge 349 that is arranged in the first ridge 346 so as to extend in the upper right direction on the drawing. It is configured. In the present embodiment, the extending direction of the second ridge 349 differs by 90 ° between the second decorative element B1 and the third decorative element C1.
- the first decorative element A1 to the third decorative element C1 have a structure in which overlapping portions are shared with each other.
- the height of the second ridge 349 is lower than that of the first ridge 346.
- the first decorative elements A1 are arranged side by side in the tire circumferential direction U.
- the second decorative elements B1 and the second decorative elements C1 are alternately arranged in the tire circumferential direction U.
- the first decorative element row 354 in which the first decorative elements A1 are arranged in the tire circumferential direction U, and the second decorative element row 356 in which the second decorative elements B1 and the third decorative elements C1 are arranged in the tire circumferential direction U. are alternately arranged in the tire radial direction R.
- the first decorative element rows 354 sandwiching the second decorative element row 356 from both sides in the tire radial direction are arranged so as to be shifted from each other in the tire circumferential direction U by half of the tire circumferential direction length of the decorative element A1.
- the second decorative element rows 356 sandwiching the first decorative element row 354 from both sides in the tire radial direction are shifted from each other in the tire circumferential direction U by the tire circumferential direction length of the second decorative element B1 or the third decorative element C1. Is arranged.
- the concept of arranging the first decorative element A1, the second decorative element B1, and the third decorative element C1 in this way will be described with reference to FIG.
- the first decorative element A1 to the third decorative element C1 have the same rhombus shape, each of which forms a regular hexagon. Accordingly, the first decorative element A1 to the third decorative element C1 have a rhombus shape with a wide angle of 120 ° and an included angle of 60 °.
- the smooth surface region 344 is formed in the first ridge 346, and in the second decorative element C1, the second decorative element 349 is arranged in the second decorative element B1.
- the second ridge 349 is arranged (however, the second ridge 349 of the third decorative element C1 is arranged so that the extending direction differs from the second ridge 349 of the second decorative element B1 by 90 °). ),
- the arrangement positions of the first ridge 346, the second ridge 349, and the smooth surface region 344 are set in advance, and the first ridge 346, the second ridge 349, and the smooth surface region 344 are combined.
- the first decorative element A1, the second decorative element B1, and the third decorative element C1 are periodically arranged on the side decorative band 316.
- the side decorative band 316 is formed on the side portion 114 in the present embodiment.
- the first decorative element A1, the second decorative element B1, and the third decorative element C1 are periodically arranged in the tire circumferential direction U and the tire radial direction R.
- the first ridge 346 of the first decorative element A1 is a smooth surface region 344
- the second ridge 349 is arranged in the first ridge 346 of the second decorative element B1
- the third decorative element C1 includes: A second ridge 349 that forms an angle of 90 ° with the second ridge 349 of the second decorative element B1 is arranged. Accordingly, three different gradations (gradations) are visually recognized on the side decorative band 316.
- the first decorative element A1 to the third decorative element C1 can effectively produce a difference in lightness (shadow density) due to a difference in the light reflection direction.
- a reflectance is high and the reflection direction is the same direction. Therefore, it is possible to provide the pneumatic tire 100 with clear glossiness and high-quality feeling and improved appearance (design). This is particularly noticeable when the side decorative strip 316 is coated with wax.
- the height of the first ridge 346 is higher than that of the second ridge 349. Accordingly, the first ridge 346 serves as an outer frame of the decorative pattern, and the second ridge 349 serves to improve the visibility, so that the appearance is further improved. It should be noted that the ridge dimensions can be varied in this manner by varying the processing depth when forming the ridge by cutting or etching.
- the side decorative band 316 the first decorative element A1, the second decorative element B1, and the third decorative element C1 are periodically and continuously formed.
- the side decorative band 316 is formed. It is possible to make the unevenness of the part that is present inconspicuous.
- the first ridges 346 forming the outer edges of the first decorative element A1 to the third decorative element C1 have the same shape and the same ridge height. Thereby, uniformity and regularity appear remarkably in the side decoration band 316, and further effects can be obtained in making the unevenness of the side decoration band 316 inconspicuous.
- the reflected light from the first decoration element A1, the second decoration element B1, and the third decoration element C1 is emitted at regular intervals. And the uniformity and regularity of the side decoration portion are strongly visually recognized.
- the extending direction of the second ridge 349 differs between the second decorative element B1 and the third decorative element C1 by 90 °. Therefore, since the shade of the shadow changes regularly when the pneumatic tire 100 rotates at a rotational speed at which the first decorative element A1 to the third decorative element C1 are visible, the appearance of the side portion 114 (designability) ) Is further improved.
- the pneumatic tire 100 includes the mark portion 130 on the side portion 114.
- the mark portion 130 displays the mark 132 and the first decorative element A1 and the second decorative element at both ends. Adjacent to the decorative element B1. Therefore, the visibility of the mark part 130 is improved, that is, the visibility of the mark 132 is improved.
- the mark 132 is displayed on a smooth surface, and a ridge 34 (for example, a linear or curved ridge) is arranged in the surrounding area 136 of the mark portion 130 excluding the mark 132.
- a ridge 34 for example, a linear or curved ridge
- the visibility of the mark 132 is further improved, and the impact on the person who has seen the mark 132 is great.
- the two side decoration bands 316 are formed and this side decoration band 316 is arrange
- FIG. 24 is a cross-sectional view taken along the line 4-4 in FIG. 22B.
- the first ridge 346 constituting the first decorative element B1 has a trapezoidal cross section.
- the width B12 of the plane 346F forming the top of the first ridge 346 is 0.2 mm at the maximum.
- the angle ⁇ 10 formed by the slope (side wall) 36S of the first ridge 346 with respect to the normal direction N of the side decorative strip 316 is 45 °.
- the height h12 of the first ridge 346 is 0.2 mm (note that h12 is preferably in the range of 0.15 to 0.35 mm).
- the height of the partition ridge 338 (see FIG. 2) extending in the tire radial direction R and partitioning the side decoration band 316 and the mark portion 330 is 0.4 mm.
- the second ridge 349 is also trapezoidal in cross section.
- the width B22 of the plane 349F that forms the top of the second ridge 349 is also 0.2 mm at the maximum.
- an angle ⁇ 20 formed by the inclined surface 349S of the second ridge 349 with respect to the normal direction N of the side decorative band 316 is 35 °.
- the height h22 of the second ridge 349 is 0.15 mm (note that h22 is preferably in the range of 0.1 to 0.3 mm).
- the interval d22 between the adjacent second ridges 349 is 0.6 mm.
- FIG. 25 is a cross-sectional view taken along the line 5-5 in FIG. 22B.
- the cross-sectional dimensions of the first ridge 346 and the second ridge 349 constituting the third decorative element C1 are the same as those of the first ridge 346 and the second ridge 349 constituting the second decorative element B1, respectively. It is. However, the distance d32 between the adjacent second ridges 349 is 0.8 mm.
- the slopes 346S of the first ridge 346 and the slopes 348S of the second ridge 348 are different in inclination angle ( ⁇ 10 and ⁇ 20 are different), so that the first ridge 346 serves as an outer frame of the decorative pattern.
- the second ridge 349 can further clearly play the role of improving the visibility of the pattern. This is further manifested by the relationship of h12> h22 and ⁇ 10> ⁇ 20.
- the pitch of the second ridges 349 arranged in the third decorative element C1 (adjacent to the pitch of the second ridges 349 arranged in the second decorative element B1 (interval d22 between the adjacent second ridges 349).
- the distance d32) between the second ridges 349 is wider.
- the second ridges 349 are arranged at a higher density in the second decorative element B1 than in the third decorative element C1. Accordingly, it is possible to effectively produce a difference in shadow caused by a difference in pitch between the second decorative element B1 and the third decorative element C1. This is particularly effective when the lightness difference between the second decorative element B1 and the third decorative element C1 is sufficiently visible when the amount of light incident on the tire side surface is small.
- FIG. 26 in the side portion of the pneumatic tire according to the present embodiment, a side in which a third decorative element C2 is arranged instead of the third decorative element C1 (see FIG. 22B) as compared with the eighth embodiment.
- a decorative band 366 is formed.
- the extending direction of the second ridge 349 is the same as that of the second ridge 349 of the second decorative element B1 compared to the third decorative element C1 described in the eighth embodiment.
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Abstract
Description
図1に示すように、空気入りタイヤ10の車両外側のサイド部14には、2つの円弧状のサイド装飾帯16が形成されている。サイド装飾帯16は、タイヤ中心軸C(図1参照)を挟んで対称位置に配置されるように2つ形成されている。各サイド装飾帯16には、タイヤ周方向Uに対して傾斜した多数のリッジ18が配列されている。
装飾部24は、タイヤ周方向Uに互いに隣接する2つの装飾半部24A、24Bで構成されている。装飾半部24A、24Bは何れも外形が平行四辺形状であるが、装飾半部24Aはややタイヤ外周側に位置し、装飾半部24Bはややタイヤ内周側に位置する。
以下、本実施形態に係る空気入りタイヤ10で、第1リッジ26、第2リッジ28及びこれらの配置間隔などの好適な具体例を示す。図6は、図3の矢視6-6から見た断面図である。
図2に示したように、空気入りタイヤ10の車両内側のサイド部54には、車両外側のサイド部14と同様に2つの円弧状のサイド装飾帯16と、2つの円弧状の標章部20とが形成されている。
装飾部64は、タイヤ周方向Uに互いに隣接する2つの装飾半部64A、64Bで構成されている。装飾半部64A、64Bは何れも外形が平行四辺形状であるが、装飾半部64Aはややタイヤ外周側に位置し、装飾半部64Bはややタイヤ内周側に位置する。
装飾部66は、タイヤ周方向Uに互いに隣接する2つの装飾半部66A、66Bで構成されている。装飾半部66A、66Bは何れも外形が平行四辺形状であるが、装飾半部66Aはややタイヤ外周側に位置し、装飾半部66Bはややタイヤ内周側に位置する。
次に、第2実施形態について説明する。図9は、本実施形態に係る空気入りタイヤ100の側面図である。図9、図10に示すように、空気入りタイヤ100のサイド部114には、第1装飾要素120と第2装飾要素122とが複数組み合わされてなる円弧状のサイド装飾帯116(図9、図10参照)が形成されている。第1装飾要素120は、設定形状の平滑面領域124の輪郭を形成する第1リッジ126のみで形成されている。第2装飾要素122は、輪郭を形成する第1リッジ126と、第1リッジ126内に配列され第1リッジ126よりも高さが低い第2リッジ128と、で構成されている。なお、互いに隣接する第1装飾要素120と第2装飾要素122とは、第1リッジ126を共有している。
次に、第3実施形態について説明する。本実施形態では、図9に示される空気入りタイヤ100のサイド部114のサイド装飾帯116に、図13に示すように、第1装飾要素150及び第2装飾要素152が、それぞれ離隔して配置されている。第1装飾要素150は、第2実施形態で説明した第1装飾要素120に比べ、紙面上下方向(タイヤ半径方向R)が逆向きとされたものであり、断面寸法が第1リッジ126と同じである第1リッジ156が平滑面領域154の周囲に形成されている。第2装飾要素152は、第2実施形態で説明した第2装飾要素122に比べ、断面寸法が第1リッジ126と同じである第1リッジ158が周囲に形成されているものである。第2リッジ128は第1リッジ156内に配列されている。
次に、第4実施形態について説明する。本実施形態では、図9に示される空気入りタイヤ100のサイド部114に、図14Aに示すように、第1装飾要素170及び第2装飾要素172(後述の第2装飾要素172A、172B)が複数組み合わされてなる円弧状のサイド装飾帯166が形成されている。サイド装飾帯166は、タイヤ中心軸を挟んで対称位置に配置されるように2つ形成されている。そして、第1実施形態と同様、円弧状の標章部130(図9参照)がサイド部に形成されている。
本実施形態により、第2実施形態と同様の効果を奏することができる。
次に、第5実施形態について説明する。本実施形態では、図9に示される空気入りタイヤ100のサイド部114に、図16に示すように、第1装飾要素200及び第2装飾要素202が複数組み合わされてなる円弧状のサイド装飾帯205が形成されている。サイド装飾帯205は、タイヤ中心軸を挟んで対称位置に配置されるように2つ形成されている。そして、第2実施形態や第3実施形態と同様、円弧状の標章部130(図9参照)がサイド部に形成されている。
次に、第6実施形態について説明する。本実施形態では、図9に示される空気入りタイヤ100のサイド部114に、図18A、図18Bに示すように、第1装飾要素220と第2装飾要素222とが複数組み合わされてなる円弧状のサイド装飾帯216が形成されている。サイド装飾帯216は、タイヤ中心軸を挟んで対称位置に配置されるように2つ形成されている。そして、第2実施形態や第3実施形態と同様、円弧状の標章部130(図9参照)がサイド部に形成されている。なお、サイド装飾帯216のタイヤ半径方向外側及び内側の各周縁部には周縁リッジ224が形成されている。
次に、第7実施形態について説明する。本実施形態では、図9に示される空気入りタイヤ100のサイド部114に、図20に示すように、サイド装飾帯276が形成されている。サイド装飾帯276には、第4実施形態に比べ、隣り合う装飾要素の間に、タイヤ半径方向に対して紙面右回りに30°傾斜した帯状平滑面280が形成されている
次に、第8実施形態について説明する。図21は、本実施形態に係る空気入りタイヤ300の側面図である。図21、図22Aに示すように、空気入りタイヤ300のサイド部314には、第1装飾要素A1と第2装飾要素B1と第3装飾要素C1とが複数組み合わされてなる円弧状のサイド装飾帯316(図21、図22A参照)が形成されている。サイド装飾帯316は、タイヤ中心軸CE(図21参照)を挟んで対称位置に配置されるように2つ形成されている。
次に、第9実施形態について説明する。図26に示すように、本実施形態に係る空気入りタイヤのサイド部には、第8実施形態に比べ、第3装飾要素C1(図22B参照)に代えて第3装飾要素C2を配置したサイド装飾帯366が形成されている。
Claims (21)
- タイヤサイド部に装飾部を備え、
前記装飾部は、リッジを有する装飾要素と、タイヤ周方向に対して傾斜し前記装飾要素を2つ以上の領域に分けることで、前記リッジをタイヤ周方向に不連続とする谷と、を有し、
前記リッジが、第1リッジと、前記第1リッジに比べて高さ及び幅の少なくとも一方が小さい第2リッジと、を有し、
少なくとも一部の前記第1リッジがタイヤ周方向に対して傾斜しつつ互いに隣接していることで、隣り合う前記第1リッジの間に前記谷が形成されている、タイヤ。 - 前記装飾要素は、
外縁部が前記第1リッジで形成され、外縁部の内側が平滑面である第1装飾要素と、
外縁部が前記第1リッジで形成され、外縁部の内側に前記第2リッジが配列された第2装飾要素と、
を有する、請求項1に記載のタイヤ。 - 前記第2装飾要素は、前記第2リッジの方向が互いに異なる少なくとも2種類で構成される、請求項2に記載のタイヤ。
- 前記第1装飾要素と前記第2装飾要素とが前記谷に沿って交互に配置されてなる装飾要素列が形成され、
隣り合う前記装飾要素列の間では、前記装飾要素列に沿って前記谷が連続している、請求項2又は3に記載のタイヤ。 - 前記谷の延びる方向が、タイヤ周方向に対して20~90°の範囲の角度をなす、請求項1~4のうち何れか1項に記載のタイヤ。
- 前記谷の底幅が、0.2mm以上で、かつ、前記装飾要素の最長幅以下である、請求項1~5のうち何れか1項に記載のタイヤ。
- 前記装飾要素の高さが、0.1mm以上0.3mm未満である、請求項1~6のうち何れか1項に記載のタイヤ。
- タイヤサイド部に標章部と装飾部とを備えたタイヤにおいて、
前記装飾部を複数種類の装飾要素の組合せで構成すると共に、
前記複数種類の装飾要素は、
装飾要素輪郭を形成する第1リッジのみで形成した第1装飾要素と、
装飾要素輪郭を形成する前記第1リッジと、前記第1リッジで区画された領域内に配置され前記第1リッジよりも高さが低い第2リッジとを有する第2装飾要素と、
を含む、タイヤ。 - 前記第1装飾要素では、前記第1リッジで囲われた領域内が平滑面である、請求項8に記載タイヤ。
- 前記第1リッジと前記第2リッジとでは側壁の傾斜角度が互いに異なる、請求項8又は9に記載のタイヤ。
- 前記装飾部には、前記第1装飾要素と前記第2装飾要素とが周期的に配置されている、請求項8~10のうち何れか1項に記載のタイヤ。
- 前記第1リッジが、方向がランダムな複数の直線状リッジで構成されている、請求項8~11のうち何れか1項に記載の空気入りタイヤ。
- 前記第1装飾要素と前記第2装飾要素とが前記標章部の周囲の少なくとも一部に配置されている、請求項8~12のうち何れか1項に記載のタイヤ。
- 前記標章部のうち標章を除いた周囲領域にはリッジが配列され、
前記標章が平滑面で表示されている、請求項13に記載のタイヤ。 - タイヤサイド部に装飾部を有し、
前記装飾部は複数個の装飾要素を有し、
前記装飾要素は、装飾要素輪郭を形成する第1リッジのみで形成された第1装飾要素と、前記第1リッジと前記第1リッジ内に配置された第2リッジとで構成される第2装飾要素と、前記第2装飾要素に比べて前記第2リッジの配置が異なる第3装飾要素と、の組合せを含む、タイヤ。 - 前記第1装飾要素では、前記第1リッジ内の領域が平滑面である、請求項15記載のタイヤ。
- 前記第2装飾要素と前記第3装飾要素とでは、前記第2リッジの延在方向が互いに異なる、請求項15又は16に記載のタイヤ。
- 前記第2装飾要素と前記第3装飾要素とでは、前記第2リッジのピッチが互いに異なる、請求項15~17のうち何れか1項に記載のタイヤ。
- 前記装飾部には、前記第1装飾要素、前記第2装飾要素、及び、前記第3装飾要素が周期的に配置されている、請求項15~18のうち何れか1項に記載のタイヤ。
- 前記タイヤ側面に、標章を表示する標章部を備え、
前記装飾要素Aと前記装飾要素Bとが前記標章部の周囲の少なくとも一部に配置されている、請求項15~19のうち何れか1項に記載のタイヤ。 - 前記標章部のうち前記標章を除いた周囲領域にはリッジが配列され、
前記標章が平滑面で表示されている、請求項20に記載のタイヤ。
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CN201080051305.5A CN102612440B (zh) | 2009-11-19 | 2010-11-18 | 轮胎 |
US13/509,718 US9365080B2 (en) | 2009-11-19 | 2010-11-18 | Tire |
EP10831634.0A EP2502758B1 (en) | 2009-11-19 | 2010-11-18 | Tire |
IN5234DEN2012 IN2012DN05234A (ja) | 2009-11-19 | 2012-06-13 | |
US14/798,705 US20150314653A1 (en) | 2009-11-19 | 2015-07-14 | Tire |
US14/798,662 US20150314652A1 (en) | 2009-11-19 | 2015-07-14 | Tire |
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JP2009-264285 | 2009-11-19 | ||
JP2009284269A JP5364556B2 (ja) | 2009-12-15 | 2009-12-15 | タイヤ |
JP2009-284269 | 2009-12-15 | ||
JP2010009319A JP5325129B2 (ja) | 2010-01-19 | 2010-01-19 | タイヤ |
JP2010-009319 | 2010-01-19 |
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US14/798,705 Division US20150314653A1 (en) | 2009-11-19 | 2015-07-14 | Tire |
US14/798,662 Division US20150314652A1 (en) | 2009-11-19 | 2015-07-14 | Tire |
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EP (1) | EP2502758B1 (ja) |
CN (1) | CN102612440B (ja) |
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CN104039568B (zh) * | 2012-01-11 | 2017-03-22 | 横滨橡胶株式会社 | 充气轮胎 |
US10442251B2 (en) | 2013-06-14 | 2019-10-15 | The Yokohama Rubber Co., Ltd. | Pneumatic tire with side wall decorative portion |
JP2016215695A (ja) * | 2015-05-14 | 2016-12-22 | 株式会社ブリヂストン | タイヤ |
JP2016215699A (ja) * | 2015-05-14 | 2016-12-22 | 株式会社ブリヂストン | タイヤ |
JP2016215694A (ja) * | 2015-05-14 | 2016-12-22 | 株式会社ブリヂストン | タイヤ |
JP2016215701A (ja) * | 2015-05-14 | 2016-12-22 | 株式会社ブリヂストン | タイヤ |
JP2016215698A (ja) * | 2015-05-14 | 2016-12-22 | 株式会社ブリヂストン | タイヤ |
JP2016215703A (ja) * | 2015-05-14 | 2016-12-22 | 株式会社ブリヂストン | タイヤ |
JP2016215696A (ja) * | 2015-05-14 | 2016-12-22 | 株式会社ブリヂストン | タイヤ |
JP2016215693A (ja) * | 2015-05-14 | 2016-12-22 | 株式会社ブリヂストン | タイヤ |
JP2016215705A (ja) * | 2015-05-14 | 2016-12-22 | 株式会社ブリヂストン | タイヤ |
WO2016182076A1 (ja) * | 2015-05-14 | 2016-11-17 | 株式会社ブリヂストン | タイヤ |
US10850572B2 (en) | 2015-05-14 | 2020-12-01 | Bridgestone Corporation | Tire |
WO2016182079A1 (ja) * | 2015-05-14 | 2016-11-17 | 株式会社ブリヂストン | タイヤ |
US10752058B2 (en) | 2015-05-14 | 2020-08-25 | Bridgestone Corporation | Tire |
CN108430806B (zh) * | 2015-12-16 | 2020-08-25 | 大陆轮胎德国有限公司 | 车辆轮胎 |
CN108430806A (zh) * | 2015-12-16 | 2018-08-21 | 大陆轮胎德国有限公司 | 车辆轮胎 |
Also Published As
Publication number | Publication date |
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US20120273101A1 (en) | 2012-11-01 |
US20150314653A1 (en) | 2015-11-05 |
CN102612440A (zh) | 2012-07-25 |
CN102612440B (zh) | 2014-10-22 |
US20150314652A1 (en) | 2015-11-05 |
EP2502758A4 (en) | 2013-04-17 |
EP2502758A1 (en) | 2012-09-26 |
IN2012DN05234A (ja) | 2015-10-23 |
EP2502758B1 (en) | 2014-11-12 |
US9365080B2 (en) | 2016-06-14 |
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