JP5461161B2 - tire - Google Patents

Description

  The present invention relates to a tire provided with a decorative portion on a tire side portion.

2. Description of the Related Art Conventionally, a side decoration band formed by arranging a plurality of straight or curved ridges in parallel on a side portion of a tire has been widely used.
For example, Patent Document 1 discloses an example in which a second ridge is formed in a first ridge to form a side decoration band. Patent Document 2 discloses an example in which a side decorative band having a first decorative element composed of only a first ridge and a second decorative element in which a second ridge is arranged in the first ridge is formed. Is disclosed.

US Pat. No. 5,807,446 JP 2008-273505 A

However, in Patent Document 1, although the effect of making the unevenness of the side portion of the tire inconspicuous is obtained, the change of the silhouette due to how the light hits is scarce, and the impact on the viewer is weak. In Patent Document 2, the effect of improving the appearance by changing the reflection state of light by combining the decorative elements A and B can be obtained, but the change in the intensity of light and darkness due to the change in the ridge height is poor.
In view of the above facts, 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 invention according to claim 1 has a decoration portion on a tire side portion, and the decoration portion includes a plurality of first decoration elements and second decoration elements, and the first decoration element and the second decoration element. The element is composed of a first ridge that forms an outline of the first decorative element and the second decorative element, and a second ridge disposed in the first ridge, and the first decorative element and the first decorative element the two decorative elements, are arranged alternately in the tire circumferential direction and the tire radial direction between the second ridge of the said second ridges of said adjacent first decorative element second decorative element, unlike each other The contour of the first decorative element or the second decorative element is formed by the further first ridge in the contour of the first decorative element and the second decorative element formed by the first ridge. And in the other first ridge, the first Ridge is formed.

In the first aspect of the invention, a part of the first ridge often constitutes a decorative element on both sides of the first ridge. Moreover, as long as the side decoration part is a tire side surface, not only a side part but the shoulder part and the bead part may be provided.
In the first aspect of the invention, since the tire side portion is provided with a decorative portion formed by combining a plurality of such decorative elements, the unevenness of the tire portion provided with the decorative portion can be made inconspicuous. it can. And since the directions of the second ridges are different from each other in the decorative element, it is possible to effectively produce a difference in lightness (shadow density) due to the difference in the light reflection direction, and the appearance of the tire side portion. It can be set as the tire which improved remarkably (designability).

  In order to effectively visually recognize the shade of the shadow due to the difference in viewing direction (difference in viewing angle), the difference in the direction of the second ridge between adjacent decorative elements is preferably an angle of 90 ± 30 °. Within range. Further, the tire is not limited to a pneumatic tire but may be a solid tire.

In addition , the appearance of the tire side portion can be further improved.

According to a second aspect of the present invention, at least one of the first ridge and the second ridge 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.

According to a third aspect of the present invention, the extending center direction of the second ridge is different between the adjacent first decorative element and the second decorative element within a range of 90 ± 5 °.
Here, the extension center direction is defined because the case where the second ridge is curved or bent is taken into consideration, and the extension center direction means a direction in which the central portion of the second ridge extends. .
According to the fourth aspect of the present invention, 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 reason why the range is ± 5 ° is that a manufacturing error is taken into consideration.

According to a fourth aspect of the present invention, the height of the first ridge is higher than that of the second ridge.
As a result, the first ridge can clearly play the role of the outer frame of the decorative pattern, and the second ridge can play the role of improving the visibility of the pattern. ) Is further improved.

According to a fifth aspect of the present invention, the first ridge and the second ridge have different inclination angles of side walls.
Accordingly, the light reflection direction can be made different between the first ridge and the second ridge. As in the invention according to claim 5, the first ridge has a role as an outer frame of the decorative pattern. The ridge can clearly play the role of improving the visibility of the pattern.

According to a sixth aspect of the present invention, the tire side portion includes a mark portion for displaying a mark, and the decorative portion is disposed at least at a part around the mark portion.
Thereby, the visibility of a mark part improves, ie, the visibility of a mark improves.

According to a seventh aspect of the present invention, ridges are arranged in a peripheral area of the mark portion excluding the mark, and the mark is displayed on a smooth surface.
Thereby, the visibility of the mark is further improved and the impact on the person who has seen the mark is great. Two or more side decorative portions are formed, and it is preferable that the side 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. .

  ADVANTAGE OF THE INVENTION According to this invention, while making the unevenness | corrugation of a side part inconspicuous, it can be set as the tire which further improved the external appearance property of the side part.

1 is a side view of a pneumatic tire according to a first embodiment. 2A and 2B are a partially enlarged side view of FIG. 1 and an enlarged view of a main part of FIG. 2A, respectively. It is explanatory drawing of the concept of arrange | positioning a 1st decoration element and a 2nd decoration element in 1st Embodiment. It is sectional drawing seen from the arrow 4-4 of FIG. 2 (B). It is a partial expanded side view of the pneumatic tire which concerns on 2nd Embodiment. It is a partial expanded side view of the pneumatic tire concerning a 3rd embodiment.

  Hereinafter, embodiments will be described and embodiments of the present invention will be described. In the second and subsequent embodiments, the same components as those already described are denoted by the same reference numerals, and description thereof is omitted.

[First Embodiment]
First, the first embodiment will be described. FIG. 1 is a side view of a pneumatic tire 10 according to the present embodiment. As shown in FIGS. 1 and 2, the side portion 14 of the pneumatic tire 10 has an arc-shaped side decoration band 16 (FIG. 1, FIG. 1) formed by combining a plurality of first decoration elements 20 and second decoration elements 22. 2) is formed. 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. The first decorative element 20 and the second decorative element 22 have the same shape, and their directions are different from each other by 90 °. Note that peripheral ridges 24 are formed at the outer peripheral and inner peripheral portions of the side decorative strip 16 in the tire radial direction.

  An arc-shaped mark portion 30 is formed on the side portion 14 so as to be adjacent to one side decorative strip 16 and the other side decorative strip 16 at both ends. Accordingly, two mark portions 30 are also formed so as to be arranged at symmetrical positions with the tire central axis C interposed therebetween. The mark 32 is displayed with characters “ABCDEFGH” displayed on a smooth surface, for example. A large number of ridges 34 are arranged in the surrounding area 36 excluding the mark 32 in the mark portion 30. The side portion 14 is formed with a partition ridge 38 that extends in the tire radial direction and partitions the side decoration band 16 and the mark portion 30.

As shown in FIG. 2, the first decorative element 20 includes a first ridge 46 that divides a region, and a second ridge 48 that is arranged in the first ridge 46.
The first ridge 46 has a slightly elongated shape, and includes an outer ridge 50 and an inner ridge 52 that is formed at an equal distance from the outer ridge 50. The outer ridge 50 is formed on both sides in the longitudinal direction and has an outer convex portion 50T 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. And an outer concave portion 50D having a curved concave shape. Inner ridges 52 are also formed on both sides in the longitudinal direction and are curved convex toward the outside, and inner concave portions 52D are formed on both sides in the short direction and curved concave with respect to the outside. Consists of. The second ridge 48 is a ridge extending linearly in the longitudinal direction of the first decorative element 20.

As described above, the second decorative element 22 has the same shape as the first decorative element 20, and the directions thereof are different from each other by 90 °. Accordingly, in the first decorative element 20 and the second decorative element 22, the second ridge 48 forms an angle of 90 ° with each other. Hereinafter, the constituent elements of the second decorative element 22 (first ridge, second ridge, outer ridge, inner ridge, etc.) will be described with the same reference numerals.
The first decorative element 20 and the second decorative element 22 adjacent to each other share a part of the outer ridge 50.

As shown in FIG. 2, the first decorative element 20 and the second decorative element 22 are periodically arranged on the side decorative band 16. More specifically, in the side decoration band 16, the first decoration elements 20 and the second decoration elements 22 are alternately arranged (in a checkered pattern) in the tire circumferential direction U and the tire radial direction R. The concept of alternately arranging the first decorative elements 20 and the second decorative elements 22 in this way will be described with reference to FIG. As shown in FIG. 3, in this embodiment, the arrangement positions of the first decoration element 20 and the second decoration element 22 are shifted from each other.
The dimensions of the outer convex portion 50T and the outer concave portion 50D are set in advance so that the outer ridge 50 of the first decorative element 20 and the outer ridge 50 of the second decorative element 22 are connected without forming a corner portion. (For example, when the outer convex portion 50T and the outer concave portion 50D are arcuate, the radius of curvature and the arc length of the outer convex portion 50T and the outer concave portion 50D are set in advance).

  As described above, in the present embodiment, the side decorative band 16 in which the first decorative element 20 and the second decorative element 22 are alternately arranged in the tire circumferential direction and the tire radial direction R is formed on the side portion 14. Yes. The first decorative element 20 includes a curved first ridge 46 that divides a region, and a linear second ridge 48 arranged in the first ridge 46. The second decorative element 22 has the same shape as the first decorative element 20 and has a 90 ° difference in orientation.

  The first ridge 46 serves as an outer frame of the decorative pattern, and the second ridge 48 serves to improve visibility. In the side decoration band 16, the first decoration elements 20 and the second decoration elements 22 are alternately and continuously arranged periodically. Therefore, uniformity and regularity appear in the side decoration band 16, and the side decoration band 16. It is possible to make the unevenness of the portion where is formed inconspicuous. In addition, since the first ridge 46 has a curved shape, this effect becomes more remarkable. In addition, since the outer ridge 50 of the first decorative element 20 and the outer ridge 50 of the second decorative element 22 are continuous so as not to form corners, the effect of visualizing uniformity and regularity can be further obtained. ing.

In addition, a difference in brightness due to the difference in reflection direction between the first ridge 46 and the second ridge 48 is clearly generated, and the visibility of the side decorative strip 16 is further improved. Further, since the first decorative element 20 and the second decorative element 22 have different directions by 90 °, the extending center direction of the first ridge 46 is different by 90 °, and the extending direction of the second ridge 48 is also different by 90 °. In particular, when the extending directions of the second ridges 48 are different from each other by 90 °, the shade of the shadow due to the difference in the viewing direction is regularly changed, so that the appearance (designability) of the tire side surface is further improved.
The first ridges 46 of the first decorative element 20 and the second decorative element 22 are 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.

  Moreover, in this embodiment, the pneumatic tire 10 is provided with a mark part on the tire side surface. The mark part 30 displays the mark 32 and the first decorative element 20 and the second decorative element at both ends. 22 adjacent to each other. Therefore, the visibility of the mark part 30 is improved, that is, the visibility of the mark 32 is improved.

  Further, the mark 32 is displayed on a smooth surface, and a ridge 34 (for example, a straight or curved ridge) is arranged in the surrounding area 36 excluding the mark 32 in the mark portion 30. Thereby, the visibility of the mark 32 is further improved, and the impact on the person who has seen the mark 32 is great. And since the two side decoration bands 16 are formed and this side decoration band 16 is arrange | positioned at the tire circumferential direction both sides of the mark part 30, the mark 32 with high importance of visibility can be made more conspicuous. it can.

  Hereinafter, suitable specific examples of the first ridge 46, the second ridge 48, and the arrangement interval thereof will be described. 4 is a cross-sectional view as seen from the direction 4-4 in FIG. As shown in FIG. 4, the first ridge 46 has a trapezoidal cross section. The width B1 of the flat surface 46F that forms the top of the first ridge 46 is 0.2 mm at the maximum. The angle α1 formed by the slope (side wall) 46S of the first ridge 46 with respect to the normal direction N of the side decorative strip 16 is 45 °. The height h1 of the first ridge 46 is 0.2 mm. Moreover, the height of the partition ridge 38 and the peripheral ridge 24 (both see FIG. 1) extending in the tire radial direction R and partitioning the side decoration band 16 and the mark portion 30 is 0.4 mm.

  The second ridge 48 is also trapezoidal in cross section. The width B2 of the plane 48F that forms the top of the second ridge 48 is also 0.2 mm at the maximum. Further, the angle α2 formed by the inclined surface 48S of the second ridge 48 with respect to the normal direction N of the side decorative strip 16 is 35 °. The height h2 of the second ridge 48 is 0.15 mm. The interval d2 between the adjacent second ridges 48 is 0.6 mm.

Thus, the height h1 of the first ridge 46 is higher than the height h2 of the second ridge 48, and the slope angle 46S of the first ridge 46 and the slope 48S of the second ridge 48 are different. Therefore, the first ridge 46 can play a role as an outer frame of the decorative pattern, and the second ridge 48 can more clearly play the role of improving the visibility of the pattern. Further, since α1> α2 is established, this becomes more apparent.
In addition, if these dimensions are within a range of ± 50% of the values exemplified here, and preferably within a range of ± 30%, sufficient effects can be obtained in terms of visibility and durability.

[Second Embodiment]
Next, a second embodiment will be described. As shown in FIG. 5, in the present embodiment, the first decorative element 20 has a longitudinal direction rising rightward in the drawing, and is inclined 45 ° in the tire radial direction R. The second decorative element 22 has a longitudinal direction that is leftward on the paper surface and is inclined 45 ° in the tire radial direction R.
According to this embodiment, the same effect as that of the first embodiment can be obtained.

[Third Embodiment]
Next, a third embodiment will be described. As shown in FIG. 6, in the present embodiment, the first decorative element 60 and the second decorative element 62 are alternately and periodically arranged in the tire circumferential direction U and the tire radial direction R.

  The first decorative element 60 has a substantially rectangular elongated portion 64L elongated in the tire circumferential direction, and a substantially square extending portion 64T extending outward from the center in the tire circumferential direction of the elongated portion 64L in the tire radial direction. The first ridge 66 forms the outline of the region 24 constituted by In the first ridge 66, a second ridge 68 extending in the upper right direction on the paper (the angle formed by the tire radial direction R is 45 °) is arranged. Accordingly, the first decorative element 60 has a shape displaying a “convex” directed outward in the tire radial direction.

The second decorative element 62 includes a substantially rectangular elongated portion 74L that is elongated in the tire circumferential direction, and a substantially square-shaped extending portion 74T that extends inwardly in the tire radial direction from the central portion in the tire circumferential direction of the elongated portion 74L. The first ridge 76 forms the contour of the region 74 constituted by In the first ridge 76, a second ridge 78 extending in the upper left direction of the paper (the angle formed by the tire radial direction R is 45 °) is arranged. Accordingly, the second decorative element 62 has a shape displaying a “convex” directed inward in the tire radial direction.
According to the present embodiment, the same effects as those of the first embodiment can be obtained except for the effect due to the curved portion being formed on the first ridge 46 (see FIG. 2).

  The embodiments of the present invention have been described above with reference to the embodiments. However, these embodiments are merely examples, and various modifications can be made without departing from the scope of the invention. It goes without saying that the scope of rights of the present invention is not limited to these embodiments.

10 Pneumatic tire (tire)
14 Side part (tire side part)
16 Side decoration band (decoration part)
20 First decoration element (decoration element)
22 Second decorative element (decorative element)
30 Mark part 32 Mark 36 Surrounding area 46 1st ridge 46S Slope (side wall)
48 2nd Ridge 48S Slope (side wall)
60 First decorative element (decorative element)
62 Second decorative element (decorative element)
66 First ridge 68 Second ridge 76 First ridge 78 Second ridge

Claims (7)

Has a decorative part on the tire side,
The decorative portion is composed of a plurality of first decorative elements and second decorative elements,
The first decorative element and the second decorative element are composed of a first ridge that forms an outline of the first decorative element and the second decorative element, and a second ridge disposed in the first ridge. And
The first decorative element and the second decorative element are alternately arranged in the tire circumferential direction and the tire radial direction,
Direction of the second ridge of the second ridge of the adjacent first decorative element and the second decorative element, unlike one another,
The contour of the first decorative element or the second decorative element is formed by the further first ridge in the contour of the first decorative element and the second decorative element formed by the first ridge. The second ridge is formed in the other first ridge.
tire. Wherein at least one of the first ridge and the second ridge Ru curved der tire of claim 1. The extending direction of the center of the second ridge, the said first decorative element second decorative elements adjacent that differ from each other within a range of 90 ± 5 °, tire according to claim 1 or 2. The tire according to any one of claims 1 to 3 , wherein a height of the first ridge is higher than that of the second ridge . Wherein in the first ridge and the second ridge that different from each other the inclination angle of the sidewall, a tire according to any one of claims 1-4. The tire side portion includes a mark portion for displaying a mark,
The decorative portion that is disposed at least partly around the said mark portion, the tire according to any one of claims 1-5. Ridge is arranged in the surrounding area excluding the mark in the mark part,
The tire according to claim 6 , wherein the mark is displayed on a smooth surface .

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