pneumatic tires

Abstract

This invention relates to pneumatic tires. A pneumatic tire that produces a novel visual effect is provided. The pneumatic tire has: a sidewall (10) having a curved profile; and a decorative area (11) disposed on the sidewall (10). The pneumatic tire is characterized in that a plurality of rhomboid planes (20) and a plurality of planes (21), (22) of partial rhomboid shapes cover the decorative area (11) in a manner where the edges and vertices of the rhombus are consistent with each other. Two planes (20, 21, 22) with different perpendicular directions are arranged radially in the tire, and the vertices of the junction of the two planes (20, 21, 22) arranged radially in the tire are protruding vertices (23, 24) protruding in the direction normal to the profile.

Description

[0001] This application is based on Japanese Patent Application 2022-015752 (filed on February 3, 2022), and enjoys priority rights under that application. This application contains the entire contents of Japanese Patent Application 2022-015752. Technical Field

[0002] This invention relates to pneumatic tires. Background Technology

[0003] Previously, it was known that pneumatic tires had a raised or recessed pattern on their sidewalls. These raised or recessed patterns were mostly formed by multiple raised strips arranged at equal intervals in a straight line. Additionally, patterns formed by multiple three-dimensional parts of the same shape were also known. For example, the pattern disclosed in Patent Document 1 was formed by setting multiple quadrangular pyramidal parts as recesses relative to a reference surface.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2008-273505 Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] In addition, although many beautiful patterns have been proposed, no pattern with a groundbreaking visual effect has yet been proposed.

[0009] Therefore, the technical problem of the present invention is to provide an inflatable tire that produces a new visual effect.

[0010] (II) Technical Solution

[0011] The pneumatic tire of the embodiment has: a tire sidewall having a curved profile surface; and a decorative area disposed on the tire sidewall. The pneumatic tire is characterized in that a plurality of rhomboid planes and a plurality of planes of partial rhomboid shape cover the decorative area, the perpendicular directions of the planes arranged in the tire radial direction are different, and the vertices of the rhombuses at the tire radial ends of the planes arranged in the tire radial direction are protruding vertices protruding in the normal direction of the profile surface.

[0012] (III) Beneficial Effects

[0013] The pneumatic tire of the embodiment produces a new visual effect due to the above-mentioned features. Attached Figure Description

[0014] Figure 1 This is a half-section view of the pneumatic tire along its axial direction.

[0015] Figure 2 This is a diagram of the tire sidewall as viewed from the tire's axial direction.

[0016] Figure 3 This is an enlarged view of the decorative area on the tire sidewall.

[0017] Figure 4 It is a 3D view of the decorative area.

[0018] Figure 5 yes Figure 3 AA section diagram.

[0019] Figure 6 yes Figure 3 BB cross-sectional view.

[0020] Figure 7 yes Figure 3 CC section view.

[0021] Figure 8 yes Figure 3 DD cross-sectional view.

[0022] Figure 9 yes Figure 3 EE cross-sectional view.

[0023] Figure 10 It means Figure 3 The diagram of the edges from F to G.

[0024] Figure 11 This is an enlarged view of the decorative area on the sidewall of the modified tire.

[0025] Explanation of reference numerals in the attached figures

[0026] C…centerline, 1…pneumatic tire, 2…carcass ply, 2a…folded-back portion, 3…rubber bead wrapping, 4…belt belt, 5…belt belt reinforcement layer, 6…tread rubber, 7…sidewall rubber, 8…rim line, 9…bead portion, 9a…bead core, 9b…sidewall core, 10…sidewall, 11…decorative area, 12…inner diameter sideline, 13…outer diameter sideline, 19…diamond plane, 20…diamond plane, 21…triangular plane, 22…triangular plane, 23…protruding vertex, 24…protruding vertex, 25…recess, 26…step, 31…first protrusion, 32…second protrusion, 120…diamond plane. Detailed Implementation

[0027] Figure 1 The cross-sectional structure of the pneumatic tire 1 according to the embodiment is shown. Furthermore, Figure 1 The image shown represents only half of the tire's axial direction; the actual inflatable tire 1 is roughly symmetrical about the centerline C. Figure 1 Arrow A indicates the tire axial direction. Figure 1and Figure 2 Arrow B in the diagram indicates the radial direction of the tire.

[0028] In the pneumatic tire 1, bead portions 9 are provided on both sides of the tire axial direction. The bead portion 9 is configured to include: a bead core 9a made of steel wire wound into a circle, and a rubber sidewall core 9b provided radially outside the bead core 9a.

[0029] One or two carcass ply layers 2 are mounted on the bead portions 9 on both sides of the tire axial direction. The carcass ply layer 2 is a sheet-like component formed by multiple ply cords arranged in a direction orthogonal to the tire circumferential direction and covered with rubber. The carcass ply layer 2 forms the skeleton shape of the pneumatic tire 1 between the bead portions 9 on both sides of the tire axial direction, and is folded back and rolled up from the inner side of the tire axial direction to the outer side around the bead portion 9, thereby surrounding the bead portion 9. Furthermore, a rubber bead wrap 3 is provided on the outer side of the folded portion 2a of the carcass ply layer 2 on the tire axial direction.

[0030] In addition, multiple belts 4 are provided on the radially outer side of the tire carcass ply 2, and a belt reinforcement layer 5 is provided on the radially outer side of the belts 4. The belts 4 are components made of multiple steel cords covered with rubber. The belt reinforcement layer 5 is a component made of multiple organic fiber cords covered with rubber. A tread rubber 6 is provided on the radially outer side of the belt reinforcement layer 5. Multiple grooves are provided on the tread rubber 6 to form the tread pattern.

[0031] Additionally, sidewall rubbers 7 are provided on both sides of the tire carcass ply 2 along the tire axial direction. The tread rubber 6 and the sidewall rubber 7 overlap at the shoulder reinforcement, but either the tread rubber 6 or the sidewall rubber 7 may overlap on the tire surface side. The radially inner portion of the sidewall rubber 7 extends to the vicinity of the bead portion 9 and covers a portion of the rubber bead wrapping 3.

[0032] A small protrusion, approximately 1 mm high, known as a rim line 8, is formed at the boundary between the sidewall rubber 7 and the rubber bead wrap 3 on the tire surface. The rim line 8 encircles the tire circumference once. Alternatively, a rim protection portion protruding in a roughly triangular cross-section can be provided at the same location as the rim line 8, instead of the rim line 8. In the radial direction of the tire, the area from the rim line 8 or the rim protection portion to the tread end is defined as the tire sidewall 10.

[0033] Here, the tread end refers to the axial end of the tire where the tread rubber 6 contacts the road surface when mounted on a standard rim and subjected to standard internal pressure and a standard load. Here, the standard rim refers to the rim specified for the tire within the specification system, including the tire's base specification. For example, JATMA refers to the standard rim, while TRA and ETRTO refer to the "Measuring Rim". Furthermore, standard internal pressure refers to the tire pressure specified for each specification within the specification system, including the tire's base specification. For truck / bus tires and light truck tires, JATMA refers to the maximum pressure, TRA refers to the maximum value recorded in the table "TIRE LOAD LIMITS AT VARIOUSCOLDINFLATION PRESSURES", and ETRTO refers to "INFLATION PRESSURE". For passenger car tires, the standard internal pressure is typically 180 kPa, but tires labeled "Extra Load" or "Reinforced" have a standard pressure of 220 kPa. Standard load refers to the load capacity specified for each tire within the specification system, including the tire's base specification. For JATMA, it's the "maximum load capacity"; for TRA, it's the maximum value listed in the table "TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES"; and for ETRTO, it's "LOAD CAPACITY". The standard load for passenger car tires is equivalent to 88% of the aforementioned load values. For small racing tires, the standard load is 392 N.

[0034] In addition, a sheet-like inner liner is attached to the inside of the tire carcass ply 2. This inner liner is made of rubber with low air permeability. Besides these components, belt underlays, bead wraps, and other components are also provided according to the functional requirements of the tire.

[0035] like Figure 1 and Figure 2 As shown, a decorative area 11 is provided on at least one of the tire sidewalls 10 on both sides of the tire's axial direction. The decorative area 11 is an annular shape centered on the tire's rotation axis. The decorative area 11 is a strip-shaped area of ​​a certain width enclosed by an inner diameter sidewall 12 of a smaller diameter circle and an outer diameter sidewall 13 of a larger diameter circle. The inner diameter sidewall 12 and the outer diameter sidewall 13 can be lines formed on the tire surface using concave, convex, or step features, or they can be imaginary lines that do not actually exist.

[0036] The decorative area 11 occupies a portion of the area from the maximum width position of the pneumatic tire 1 to the tread end. Here, the maximum width position of the pneumatic tire 1 refers to the position with the longest axial length of the tire, from the surface of the sidewall 10 on one side of the tire's axial direction to the surface of the sidewall 10 on the other side of the tire's axial direction, when mounted on a standard rim and subjected to standard internal pressure and a standard load. The width (radial length of the tire) of the decorative area 11 is, for example, 5 mm or more and 50 mm or less.

[0037] Alternatively, the decorative area 11 may be configured to include portions where steps are likely to appear on the surface of the tire sidewall 10. Typically, portions where steps are likely to appear on the surface of the tire sidewall 10 refer to the end positions of the tire components. Typical examples of such portions include: the portion where the interface between the tread rubber 6 and the sidewall rubber 7 appears on the tire surface, and the axial position of the tire at the rolled-up end of the carcass ply 2 (the end of the folded-back portion 2a of the carcass ply 2).

[0038] like Figure 3 and Figure 4 As shown, a plurality of rhomboid planes 19 and 20 (hereinafter referred to as "rhomboid planes 19 and 20") are provided in such a decorative area 11. The plurality of rhomboid planes 19 and 20 are arranged in a manner where the edges and vertices of the rhombuses are consistent with each other. Furthermore, two columns of rhomboid planes 19 and 20 are formed, encircling the tire circumference. In each column of rhomboid planes 19 and 20, the rhomboid planes 19 and 20 are in contact with each other and arranged circumferentially on the tire. The columns of rhomboid planes 19 and 20 are formed as follows: a first column radially inner to the tire and a second column radially outer to the tire. Figure 3 and Figure 4 In the diagram, symbol 19 represents the rhomboid plane in the first column, and symbol 20 represents the rhomboid plane in the second column.

[0039] The rhombus-shaped planes 19 in the first column and 20 in the second column are offset by half the circumferential length of the rhombus-shaped planes 19 and 20 in the tire. Furthermore, the rhombus-shaped planes 20 in the second column intersect between the two rhombus-shaped planes 19 in the first column, and the rhombus-shaped planes 19 in the first column intersect between the two rhombus-shaped planes 20 in the second column. Therefore, the rhombus-shaped planes 19 in the first column and 20 in the second column are arranged alternately in the tire circumferential direction. There are no gaps between the rhombus-shaped planes 19 in the first column and 20 in the second column. The longer diagonals of the rhombuses in these rhombus-shaped planes 19 and 20 extend radially along the tire.

[0040] The inner radial end of the first row of rhomboid planes 19 aligns with the inner diameter sideline 12 of the decorative area 11. A triangular plane 21 (hereinafter referred to as "triangular plane 21") is provided between the two rhomboid planes 19 in the first row and the inner diameter sideline 12. The triangular plane 21 forms a row around the tire circumference along the inner diameter sideline 12. Furthermore, near the inner diameter sideline 12, the rhomboid planes 19 and triangular planes 21 in the first row are alternately arranged in the tire circumference. There is no gap between the rhomboid planes 19 and triangular planes 21 in the first row.

[0041] Furthermore, the outermost radial end of the rhomboid plane 20 in the second column aligns with the outer diameter sideline 13 of the decorative area 11. A triangular plane 22 (hereinafter referred to as "triangular plane 22") is provided between the two rhomboid planes 20 in the second column and the outer diameter sideline 13. The triangular plane 22 forms a column that wraps around the tire circumference along the outer diameter sideline 13. Additionally, near the outer diameter sideline 13, the rhomboid planes 20 and triangular planes 22 in the second column are alternately arranged in the tire circumference. There is no gap between the rhomboid planes 20 and triangular planes 22 in the second column.

[0042] These triangular planes 21 and 22 are obtained by dividing rhombus planes 19 and 20 in half. Triangular plane 21, which connects to the inner diameter sideline 12, corresponds to half of the outer radial side of rhombus planes 19 and 20. Furthermore, triangular plane 22, which connects to the outer diameter sideline 13, corresponds to half of the inner radial side of rhombus planes 19 and 20. Therefore, it can be said that triangular planes 21 and 22 are part of rhombus planes 19 and 20.

[0043] Such rhomboid planes 19 and 20, as well as triangular planes 21 and 22, cover the entire decorative area 11 without gaps. Therefore, it can be said that the decorative area 11 is formed by multiple small planes 19, 20, 21, and 22.

[0044] The rhomboid planes 19 and 20 and the triangular planes 21 and 22 are arranged tangent to the curved profile surface. The profile surface in the tire sidewall 10 refers to the tire surface without any irregularities or depressions for decoration. The profile surface is a curved surface that smoothly connects the uneven areas on both radial sides of the decorative area 11. The profile surface... Figure 5 and Figure 6 The middle part is represented by a double-dotted line.

[0045] like Figure 5As shown, the rhombus plane 20 and the triangular plane 21 have different orientations (in other words, different directions relative to the perpendiculars of their respective faces). Furthermore, the junction of the rhombus plane 20 and the triangular plane 21 protrudes significantly towards the normal direction of the contour surface. This junction of the rhombus plane 20 and the triangular plane 21 is designated as the protruding vertex 23. Moreover, the junction of the rhombus plane 20 and the triangular plane 21 (protruding vertex 23) is one of the rhombus vertices of the rhombus plane 20 and also one of the triangular vertices of the triangular plane 21.

[0046] From the cross-sectional view Figure 5 The protruding vertex 23 is positioned at one of two locations that divide the decorative area 11 (i.e., the area from the inner diameter sideline 12 to the outer diameter sideline 13) radially into three equal parts. Furthermore, a line drawn from the protruding vertex 23 towards the radially inner side of the tire, tangent to the profile surface, forms a triangular plane 21. This tangent is tangent to the profile surface at the inner diameter sideline 12.

[0047] Furthermore, a tangent line drawn from the protruding vertex 23 towards the radially outer side of the tire, forming the rhomboid plane 20, is formed. This tangent line is tangent to the profile surface at or near the midpoint between the outer diameter side line 13 and the protruding vertex 23. A step is also formed at the location of the outer diameter side line 13.

[0048] Thus, the rhomboid plane 20 and the triangular plane 21 are configured to be tangent to the profile surface in the radial section of the tire. Therefore, a portion of the rhomboid plane 20 and the triangular plane 21 coincides with the profile surface, while the other portions are located outside the profile surface of the tire. Furthermore, in the decorative area 11, the protruding vertex 23 protrudes the highest compared to the profile surface. The height of the protruding vertex 23 from the profile surface (i.e., the height in the normal direction of the profile surface from the protruding vertex 23) is, for example, 0.5 mm or more and 1.5 mm or less.

[0049] The height of the protruding vertex 23 from the contour surface is preferably in the range of 3% to 30% of half the radial length of the rhomboid plane 20 of the tire. The specific value of the height of the protruding vertex 23 from the contour surface also depends on the outer diameter of the pneumatic tire 1, etc.

[0050] With based Figure 5 Similarly, as explained above, Figure 6 As shown, the rhombus plane 19 and the triangular plane 22 have different orientations (i.e., different directions relative to the perpendiculars of each face). Furthermore, the junction of the rhombus plane 19 and the triangular plane 22 protrudes higher in the direction of the normal to the contour surface, becoming the protruding vertex 24.

[0051] The protruding vertex 24 is also positioned at one of two locations that divide the decorative area 11 (i.e., the area from the inner diameter sideline 12 to the outer diameter sideline 13) into three equal parts radially in the tire. Furthermore, the tangent to the contour surface drawn from the protruding vertex 24 toward the radially inner side of the tire forms a rhomboid plane 19, and the tangent to the contour surface drawn from the protruding vertex 24 toward the radially outer side of the tire forms a triangular plane 22.

[0052] Thus, the rhomboid plane 19 and the triangular plane 22 are positioned as tangents to the profile surface in the radial section of the tire. Therefore, a portion of the rhomboid plane 19 and the triangular plane 22 aligns with the profile surface, while the remaining portions lie outside the profile surface of the tire. Furthermore, in the decorative area 11, the protruding vertex 24 protrudes the highest compared to the profile surface. The height of the protruding vertex 24 from the profile surface is the same as the height of the protruding vertex 23 from the profile surface.

[0053] In each of the rhomboid planes 19 and 20 and the triangular planes 21 and 22, the angles at the radial ends of the tire on these planes are all protruding vertices 23 and 24. Furthermore, from... Figure 4 It can also be seen that the angles at the tire circumferential ends of rhomboid planes 19 and 20 become concave 25 relative to the protruding vertices 23 and 24 of the adjacent rhomboid planes 19 and 20. The protruding vertices 23 and 24 become brighter because light can easily shine on them. In contrast, the concave 25 becomes darker because light cannot easily shine on it.

[0054] Depend on Figure 4 , Figure 7 , Figure 8 As can be seen, the boundaries of adjacent planes 19, 20, 21, and 22 form step 26 (see reference). Figure 4 and Figure 8 However, by Figure 3 , Figure 4 and Figure 9 It can be seen that there are no steps on the boundary of adjacent planes 19, 20, 21, and 22 on the baseline L. Here, the baseline L is a line that passes through the reference position and extends along the tire circumference. The reference position is defined as the position located at a distance of 1 / 4 of the tire's radial length from the protruding vertices 23 and 24 away from the rhomboid planes 19 and 20. Figure 3 The cut line EE is aligned with the baseline L. Additionally, as... Figure 10 As shown, the edge between the two protruding vertices 23 and 24 becomes a line that curves at the position of the baseline L.

[0055] Depend on Figure 4 It can be seen that the portion from the baseline L to the protruding vertices 23 and 24 forms a protrusion of a roughly triangular pyramid. The protrusion includes a first protrusion 31 with protruding vertices 23 and 24 at the radially inner end of the triangular pyramid on the tire, and a second protrusion 32 with protruding vertices 23 and 24 at the radially outer end of the triangular pyramid on the tire.

[0056] Depend on Figure 4 As can be seen, the first protrusion 31 and the second protrusion 32 are arranged in a row in the circumferential direction of the tire. In addition, in the radial direction of the tire, the first protrusion 31 and the second protrusion 32 are arranged alternately. The protruding vertices 23 and 24 of the first protrusion 31 coincide with the protruding vertices 23 and 24 of the second protrusion 32.

[0057] Although no illustration is provided, markings or similar elements may be provided on the outer side of the decorative area 11 on the tire sidewall 10. The markings or similar elements are created using embossing.

[0058] Such decorative areas 11 can be formed by a mold during the vulcanization of the pneumatic tire 1. The molded surface of the mold used for vulcanization has rhomboid planes 19 and 20 and triangular planes 21 and 22.

[0059] As described above, in the pneumatic tire 1 of this embodiment, the rhomboid planes 19 and 20 and the planes with partial rhomboid shapes (triangular planes 21 and 22) cover the decorative area 11 in a manner where the sides and vertices of the rhombus are consistent with each other. Two planes 20 and 21 (or 19 and 22) with different perpendicular directions are arranged radially in the tire. Furthermore, the junction of the two planes 20 and 21 (or 19 and 22) arranged radially in the tire becomes protruding vertices 23 and 24 that protrude in the normal direction of the contour surface. Therefore, a new visual effect is generated from the pneumatic tire 1.

[0060] Specifically, since multiple planes 19, 20, 21, and 22 each act as light-reflecting surfaces, and because the perpendicular directions of the two planes 20 and 21 (or 19 and 22) arranged radially on the tire are different, the two planes 20 and 21 (or 19 and 22) reflect light in different directions, thus creating a visual effect based on the emission of light from a mirror sphere. Furthermore, by forming concave and convex shapes including protruding vertices 23 and 24, a three-dimensional visual effect is also created for the decorative area 11. Additionally, since planes 19 and 20 are rhomboid, a shimmering aesthetic is produced.

[0061] Furthermore, it is known that when an internal pressure is applied to a pneumatic tire 1, i.e., when it is inflated, striped indentations are typically formed on the tire sidewall. However, in this embodiment, the tire sidewall 10 has protrusions and depressions including protruding vertices 23 and 24, thus making these striped indentations less noticeable.

[0062] In addition, since the protruding vertices 23 and 24 protrude further outward from the tire than the contour surface, light can easily shine on the vicinity of the protruding vertices 23 and 24, making the protruding vertices 23 and 24 appear brighter and creating a three-dimensional aesthetic in the decorative area 11.

[0063] In addition, at least two columns are formed by arranging multiple rhomboid planes 19 and 20 in the tire circumference direction. The first column of rhomboid planes 19 on the inner radial side of the tire and the second column of rhomboid planes 20 on the outer radial side of the tire are arranged alternately in the tire circumference direction, thereby making the aesthetic effect of light reflection on the rhomboid planes 19 and 20 more prominent.

[0064] Furthermore, by extending the longer diagonals of the rhomboid planes 19 and 20 radially in the tire direction, the protruding vertices 23 and 24 appear more prominent and brighter compared to cases where the longer diagonals extend in other directions. This increases the contrast between light and shadow in the decorative area 11.

[0065] In addition, the decorative area 11 is a strip-shaped area that wraps around the tire circumference. The diamond-shaped planes 19 and 20 and the triangular planes 21 and 22 cover the entire strip-shaped area, thus creating an overall aesthetic effect from the circumference of the tire sidewall 10.

[0066] Furthermore, the rhomboid planes 19 and 20 and the triangular planes 21 and 22 cover the entire decorative area 11 without gaps, thus creating an aesthetic effect similar to a mirror sphere. In addition, since the rhomboid planes 19 and 20 and the triangular planes 21 and 22 are arranged tangent to the curved contour surface, they also create an aesthetic effect similar to a mirror sphere.

[0067] The above embodiments are merely illustrative, and the scope of the invention is not limited to the above embodiments. Various modifications can be made to the above embodiments without departing from the spirit of the invention. Several modifications are described below, but for the above embodiments, any one of the multiple modifications can be applied, or any two or more of the multiple modifications can be combined and applied without causing contradictions.

[0068] <Example of Change 1>

[0069] The decorative area can also be a region of a predetermined shape other than a circular ring. Examples of predetermined shapes include logos, aesthetically pleasing lettering, and graphics. In such a region of a predetermined shape, multiple rhomboid planes can be laid out, similar to the embodiments described above. This makes the logo, etc., appear aesthetically pleasing.

[0070] <Example 2 of the amendment>

[0071] The rhomboid plane can also be configured such that the extension of its longer diagonal is along the tire circumference. In this case, the radial end of the rhomboid plane also becomes the protruding vertex.

[0072] <Example 3 of the Change>

[0073] The rhomboid plane that wraps around the circumference of the tire can also have three or more columns. For example, in Figure 11In the middle, the rhomboid plane 120 has 3 columns.

[0074] <Example 4 of the amendment>

[0075] In the above embodiments, the following situation is described: the rhombus vertices of rhombus planes 19 and 20 are connected to the triangle vertices of triangle planes 21 and 22, and the connection points are protruding vertices 23 and 24. However, it is also possible that the rhombus vertices of rhombus planes 19 and 20 are slightly separated from the triangle vertices of triangle planes 21 and 22, and these rhombus and triangle vertices become protruding vertices respectively.

[0076] At this point, the rhombus vertices of rhombus planes 19 and 20, which become prominent vertices respectively, and the triangular vertices of triangular planes 21 and 22 are the closest points of two planes arranged radially along the tire.

Claims

1. A pneumatic tire comprising: a sidewall having a curved profile; and a decorative area disposed on the sidewall, the pneumatic tire being characterized in that, The decorative area is covered by multiple planes of a rhombus and multiple planes of a partial rhombus shape. The perpendicular directions of the planes arranged radially along the tire are different. The vertices of the rhombus at the radial end of the plane arranged in the radial direction of the tire are protruding vertices that project in the direction normal to the profile surface. The vertices of the rhombus at the circumferential end of the tire, which forms the plane, are recesses relative to the protruding vertices. Steps are formed at the boundaries of adjacent planes.

2. The pneumatic tire according to claim 1, characterized in that, The protruding vertex protrudes further outward from the tire than the contour surface.

3. The pneumatic tire according to claim 1 or 2, characterized in that, The rhomboid planes, i.e., the rhomboid planes arranged in columns along the tire circumference, form at least two columns, with the rhomboid planes of the columns on the inner radial side of the tire and the rhomboid planes of the columns on the outer radial side of the tire alternating in the tire circumference.

4. The pneumatic tire according to claim 1 or 2, characterized in that, The longer diagonal of the rhombus extends radially along the tire.

5. The pneumatic tire according to claim 1 or 2, characterized in that, The decorative area is a strip-shaped area that wraps around the tire circumference, and multiple planes cover the strip-shaped area.

6. The pneumatic tire according to claim 1 or 2, characterized in that, The decorative area is an area of ​​a predetermined shape, and the area of ​​the predetermined shape is covered with multiple planes.

7. The pneumatic tire according to claim 1 or 2, characterized in that, The decorative area is located at the end of the tire component, within the range from the maximum width of the tire to the tread end, and the width of the decorative area is more than 5 mm and less than 50 mm.

8. The pneumatic tire according to claim 1 or 2, characterized in that, On a radial cross-sectional view of the tire, the tangents between the plane and the profile surface are depicted.

Images