A tire and tire vulcanization mold with improved color saturation

Abstract

The present invention relates to the field of tires, and in particular to a tire and a tire vulcanization mold for improving color saturation, wherein the tire includes a marking area arranged on the sidewall, a pattern filling is arranged in the marking area, the pattern filling is formed by a plurality of identical pattern units arranged regularly, the pattern unit includes a plurality of extension segments extending outward from the center, each extension segment is evenly distributed in the circumferential direction, an angle region is formed between two adjacent extension segments, the inner ends of each extension segment are fixedly connected to each other, and the outer ends of the extension segments are respectively provided with extensions extending toward the angle regions on both sides of the extension segment, one of the extensions in a pattern unit extends into one of the angle regions of another pattern unit adjacent to the pattern unit, and the boundary line of the extension is parallel to and adjacent to the boundary line of the corresponding angle region. The present invention makes the pattern units more closely inlaid, reduces the area of ​​the blank area, and improves the visual impact.

Description

Technical Field

[0001] The invention relates to the field of tires, in particular to a tire and a tire vulcanization mold with improved color saturation. Background Art

[0002] Tires are the only ground-connected parts of a car, providing the driving, steering, and braking forces required for the car to move. Due to the special performance of the road conditions and scenes used, carbon black needs to be added to the tires, so the surface of the tires is mainly black. The surface of the tire sidewall usually contains patterns, font logos, and parts required by regulations. These contents can convey information such as the brand, type, size, and performance of the tire to the buyer or user, and these information are usually black, so the contrast on the sidewall is not high, that is, the visual impact is insufficient and it is difficult to be clearly observed.

[0003] In order to improve the visual contrast of the sidewall, the Chinese invention patent (CN108407347B) discloses a tire and a tire mold with a new sidewall pattern, wherein the tire includes a carcass, and the side of the carcass (i.e., the sidewall) has a marking area, and a plurality of pattern units are arranged in the marking area; the pattern unit is arranged protruding from the carcass, and the pattern unit includes a central part and a plurality of extensions, and the plurality of extensions are distributed circumferentially on the side of the central part, and the central part has a height higher than the extensions. As a result, the pattern unit presents a concave-convex visual effect as a whole, and the light incident into the pattern unit will be reflected back and forth between the sidewalls, and then the intensity of the light will be attenuated, and finally only a small amount of light can be reflected outside the pattern unit, so the pattern unit appears darker than other positions on the sidewall, which improves the visual contrast.

[0004] However, it can be found in the embodiments provided by the above patent that although the extension of the pattern unit will be inserted between the extensions of adjacent pattern units to reduce the blank area between the pattern units, the area of ​​the blank area is still relatively large. It is calculated to be about 20% of the area of ​​each pattern unit. The location of these blank areas is the surface of the sidewall, so they appear relatively low-saturation black at these locations. As a result, these larger blank areas affect the overall visual contrast of the pattern unit. From the actual tire, the contrast of the pattern unit is not as high as imagined, and there is still the possibility of further improvement. Summary of the invention

[0005] To solve the above problems, the purpose of the present invention is to provide a tire and a tire vulcanization mold with improved color saturation. By optimizing the shape of the pattern units, the pattern units are inlaid more tightly, the area of ​​the blank area is reduced, and the contrast between the pattern units and the sidewalls is increased, thereby improving the visual impact.

[0006] For the purpose of the present invention, the following technical solutions are adopted to implement:

[0007] In a first aspect, an embodiment of the present invention provides a tire with improved color saturation, comprising an identification area arranged on a sidewall, wherein a pattern filling is arranged in the identification area, wherein the pattern filling is formed by a plurality of identical pattern units arranged in a regular pattern, wherein the pattern unit protrudes from a reference plane of the sidewall and has a sidewall forming an angle with the reference plane, wherein the sidewall is configured so that light is reflected between the sidewalls, thereby deepening the color displayed in the identification area, wherein the pattern unit comprises a plurality of extension segments extending outward from the center, wherein the extension segments are evenly distributed in a circumferential direction, and an angle area is formed between two adjacent extension segments, wherein the inner ends of the extension segments are fixedly connected to each other, and the outer ends of the extension segments are respectively provided with extension portions extending toward the angle areas on both sides of the extension segments, wherein one of the extension portions in a pattern unit extends into one of the angle areas of another pattern unit adjacent to the pattern unit, and a boundary line of the extension portion is parallel to and closely adjacent to a boundary line of the corresponding angle area, and the extension portion is located in the middle position of the angle area. As a result, the pattern units can be interspersed with each other when arranged, and because the boundary line of the protruding part and the boundary line of the angle area are parallel to each other, the protruding part can be arranged in the angle area with a smaller spacing, thereby reducing the spacing between two adjacent pattern units, that is, the pattern units are arranged more closely, and the area ratio of the blank area is reduced, thereby improving the contrast of the pattern units and making the visual impact stronger.

[0008] In one embodiment, the boundary of the pattern unit can be contained within a circle with a diameter of 0.05-1.5 mm. Thus, the pattern unit itself has a smaller area, so that the pattern units can be densely distributed in the marking area, increasing the number of pattern units, facilitating the reflection of light between the side walls of the pattern units, and increasing the depth of black in the marking area.

[0009] In one embodiment, there is at least one pattern unit per square millimeter. Thus, the size of the pattern unit itself is limited to be smaller, which further increases the number and distribution density of the pattern units and further deepens the color of the marking area.

[0010] In one embodiment, the center distance between two adjacent pattern units does not exceed 0.87 mm. Thus, the size of the pattern units is limited by the distance between the pattern units, thereby increasing the distribution density of the pattern units.

[0011] In one embodiment, there is a blank area between pattern units, and the area of ​​the blank area occupies 6-12% of the area of ​​the pattern unit. Thus, in the pattern filling, the proportion of the blank area becomes smaller, so that the color of the pattern filling can be deepened and the visual impact can be improved.

[0012] In one embodiment, the distance between the boundary line of the extension portion and the boundary line of the angle region is 0.005-0.05 mm. Thus, the distance between the pattern units becomes small enough to enable the pattern units to be inlaid more closely, and such a distance also facilitates the formation of the boundary line and facilitates processing and manufacturing.

[0013] In one embodiment, the extension section is a straight extension, the protruding portion is a straight extension, and the angle between two adjacent extension sections is equal to the angle between two adjacent protruding portions. Thus, the boundary line of the protruding portion is parallel to the boundary line of the corresponding angle region, so that the pattern units are arranged more closely, and the shapes of the extension section and the protruding portion are also easy to process and manufacture.

[0014] In one embodiment, the pattern unit includes three, four or six extension segments. The number of these extension segments enables the pattern unit to be spliced ​​almost seamlessly in the plane, reducing the area of ​​the blank area. Among them, the solution with three extension segments is the best.

[0015] In one embodiment, the extension section and the protruding portion are both strip-shaped protrusions protruding outward from the tire sidewall reference plane, the strip-shaped protrusions are continuous in each pattern unit, the sidewalls are located at the sides of the strip-shaped protrusions, the angle between the sidewalls and the reference plane is 10-30°, the height of the strip-shaped protrusions is 0.2-1 mm, the width of the bottom of the strip-shaped protrusions is 0.1-0.5 mm, and the cross-section of the strip-shaped protrusions is triangular or trapezoidal. The above parameters are used to define the shape of the strip-shaped protrusions, so that light can be reflected back and forth between the sidewalls of the pattern unit, and finally the light intensity is weakened, thereby reducing the light reflected from the pattern unit, so that the pattern filling appears darker.

[0016] In a second aspect, an embodiment of the present invention provides a tire vulcanization mold for manufacturing the above-mentioned tire with improved color saturation, wherein a reverse pattern filling is arranged on the inner surface of the mold at a position corresponding to the marking area of ​​the sidewall, and the concave and convex direction of the reverse pattern filling is opposite to that of the pattern filling, so that the pattern filling is formed in the marking area when the tire is vulcanized.

[0017] Compared with the prior art, the embodiments of the present invention have at least the following beneficial effects: one of the extensions of a pattern unit extends into the corresponding angle region of another pattern unit, and the boundary lines of the extension and the angle region are parallel and adjacent to each other, so that the adjacent pattern units are arranged more closely, thereby reducing the blank area between the pattern units, so that the pattern filling appears darker as a whole, and the contrast between the marking area and the rest of the sidewall is improved, thereby enhancing the visual impact. In addition, the shape of the pattern unit provided in this embodiment can also effectively solve the problem of lack of rubber on the tire sidewall caused by the filling part. The strip-shaped protrusions in the pattern unit are continuous and tortuous, which can increase the rigidity of the strip-shaped protrusions, avoid stress concentration and fracture, and the tortuous structure can also buffer and disperse stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side view of a tire provided in an embodiment of the present invention.

[0019] Figure 2 for Figure 1 Magnified view of the middle sector area.

[0020] Figure 3 It is a schematic diagram of pattern filling formed by mutually arranging a plurality of pattern units in an embodiment of the present invention.

[0021] Figure 4 Schematic diagram of a single pattern unit in an embodiment of the present invention.

[0022] Figure 5 for Figure 4 Cross-sectional view at AA in the middle.

[0023] Figure 6 Schematic diagram of blank areas between pattern units in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] Figure 1 A side view of a tire provided in an embodiment of the present invention is shown. Figure 1 The vehicle tire 100 includes a sidewall 110 located on the axial side of the tire 100. The sidewall 110 is annular and generally has several identification features on its outer surface. These identification features may be a combination of one or more of information such as numbers, letters, emblems, manufacturer brand names, tire sizes, tire rotation directions, and manufacturing numbers. In this embodiment, the identification features are a combination of numbers and letters, forming an appearance of "12R22.5 MZ1".

[0025] The identification features are usually added by transferring the concave-convex structure on the vulcanization mold to the surface of the sidewall 110 when the tire is vulcanized. Therefore, these transferred identification features usually have the same color as the surface of the sidewall 110, and the relevant information can be confirmed by visually confirming the concave-convex structure relative to the surface of the sidewall 110.

[0026] Generally, the sidewall 110 is black, gray, or a combination thereof, and accordingly, the identification feature is also black, gray, or a combination thereof, so there is a lack of contrast between the identification feature and the color of the surface of the sidewall 110, which means that the tire manufacturer, seller, buyer, and user need to pay relatively concentrated attention to clearly and completely identify the information recorded in the identification area. In short, in the prior art, the visual impact of the identification feature is not high.

[0027] In this embodiment, the area on the sidewall 110 occupied by these identification features is defined as a marking area, and other areas on the sidewall 110 where no identification features are set are defined as non-marking areas. The surface of the sidewall 110 in the non-marking area is usually relatively smooth. To be precise, at these positions, except for the necessary lines on the surface of the sidewall 110 (usually extending along the circumference of the tire to form a ring), there are not too many lines, and the overall surface is relatively flat.

[0028] Figure 2 Shows Figure 1 A partial schematic diagram of an enlarged identification feature in Figure 2 In this embodiment, the boundary of the identification feature is defined by the shape of the identification feature itself, and a pattern fill 200 is provided inside the boundary. The pattern fill 200 has a concave-convex shape on the reference surface of the sidewall 110 (the imaginary surface of the sidewall when there is no pattern fill 200) ( Figure 2 The pattern fill 200 has a characteristic of undulating along the inside and outside directions of the paper surface, that is, the pattern fill 200 is uneven. Specifically, the pattern fill 200 includes strip-shaped protrusions protruding outward from the reference surface, and these strip-shaped protrusions extend along a certain track in the reference surface to form a pattern, and these strip-shaped protrusions have inclined side walls. Specifically, an acute angle is formed between the side wall and the reference surface, and as an example, the angle is 10-30 degrees.

[0029] The purpose of setting the above-mentioned pattern filling 200 is that when external light (such as sunlight, light) is incident on the interior of the pattern filling 200, it will be reflected on the side wall of the strip-shaped protrusion, and due to the design of the inclination angle of the side wall, most of the reflected light will continue to shine on the interior of the pattern filling 200. After the above-mentioned continuous reflection process, the light intensity gradually weakens, and finally only a small amount of light can leave the pattern filling 200. Therefore, for the observer, the color of the logo area will appear darker than that of the non-logo area, that is, the contrast between the logo area and the non-logo area is improved, thereby improving the visual impact.

[0030] like Figure 2 As shown, the pattern filling 200 is usually formed by a number of identical and independent pattern units 210 arranged according to a certain rule. Generally speaking, in order to ensure that the pattern filling 200 produces a better visual effect, the pattern units 210 need to be arranged more closely, that is, the pattern units 210 have a higher distribution density. For example, there is at least one pattern unit 210 per square millimeter to ensure that each part of the pattern filling 200 can reflect a good visual effect.

[0031] In addition, there needs to be a certain gap (also called a blank area) between the boundaries of adjacent pattern units 210 to facilitate the processing and molding of the pattern units 210. More precisely, it is to facilitate the processing of the vulcanization mold mentioned above. Because the vulcanization mold needs to be preset with a reverse pattern filling in the opposite direction of the pattern filling concave and convex direction, so that the corresponding identification features can be processed on the sidewall 110 during vulcanization, and once there is no gap between the pattern units 210, the processing of these reverse pattern fillings will become difficult, and because the rubber material will produce a small displacement during the vulcanization process, if there is no such gap, the shape of the processed pattern unit 210 will become uncontrollable.

[0032] It should be noted here that the gap between the pattern units 210 should not be too large, otherwise a relatively flat area with a large area will be formed at the connection between adjacent pattern units 210. The existence of this area will enable the incident light to be directly reflected out of the pattern unit 210, thereby weakening the visual impact of the identification feature.

[0033] In this embodiment, the gap between the pattern units 210 is 0.01 mm. However, in fact, as long as the gap is between 0.005 and 0.05 mm, the area of ​​the blank area can be reduced while ensuring that the shape of the pattern unit 210 is easy to process and manufacture, thereby making the identification feature show a higher visual effect.

[0034] Figure 4 is a schematic diagram of a single pattern unit in an embodiment of the present invention. Figure 4In this embodiment, the pattern unit 210 is triangular in shape as a whole, but is not limited thereto, and may be a quadrilateral or a hexagon. These shapes are not only relatively simple, and are convenient for processing the vulcanization mold, but can also fill the plane as much as possible, reducing the area of ​​the blank area. Further, in this embodiment, the boundary of the pattern unit 210 can be contained in a circle with a diameter d of 1.5 mm, thereby limiting the size of the pattern unit 210 itself, so that the pattern unit 210 has a relatively small shape. The advantage of such a setting is that the number of pattern units 210 in the pattern filling 200 is greater and the distribution is more compact, thereby reducing the probability of light emitting from the pattern filling 200. It should be noted that in other embodiments, the size of the boundary of the pattern unit 210 can be further reduced, for example, it can be contained in a circle with a diameter of 0.05 to 1.5 mm. In a certain embodiment, there is at least one pattern unit 210 per square millimeter, so that the pattern unit 210 is more compactly distributed and is also convenient for processing and manufacturing.

[0035] The pattern unit 210 in this embodiment specifically includes three extension segments 211 extending outward from the center. In the circumferential direction, the three extension segments 211 are evenly distributed, so that an angle region 210a with an angle of 120° is formed between two adjacent extension segments 210. For a single pattern unit 210, the position of the angle region 210a is the reference plane of the sidewall 110, so the angle region 210a is a flat and smooth surface. The inner ends of the three extension segments 211 are connected and fixed to each other. To be precise, the inner ends are integrally formed, that is, the strip-shaped protrusions mentioned above extend continuously in a single pattern unit. The outer end of the extension section 211 is provided with a pair of extensions 212 extending toward the angled regions 210a on both sides of the extension section 211, respectively. The two extensions 212 connected to the same extension section 211 are symmetrically arranged about the extension section 211, and the angle between the two extensions 212 is the same as the angle between the extension sections 211. In this embodiment, the angle between the two extensions 212 is 120°. Thus, both sides of the angled region 210a will be partially occupied by the extensions 212, thereby forming a corner 210b on both sides of the angled region 210a, and the angled region 210a also has a connection port 210c opening toward the outer end, and the boundary of the connection port 210c is defined by the opposite extensions 212 on the two adjacent extension sections 211, that is, the opposite extensions 212 on the two adjacent extension sections 211 do not contact each other, thereby forming an opening between the two extensions 212, which is the connection port 210c.

[0036] Figure 3 FIG. 2 is a schematic diagram showing a pattern filling formed by arranging a plurality of pattern units in an embodiment of the present invention. Figure 3As shown, when the pattern units 210 are arranged, they are cross-stitched with each other to cover the entire plane as much as possible. In addition, in this embodiment, the spacing D between the centers of two adjacent pattern units 210 is 0.87 mm, which limits the size of the pattern units and increases the density of distribution. Specifically, a certain extension section 211 of the first pattern unit 210 extends toward the corresponding angle area 210a in the second pattern unit 210 adjacent to the pattern unit 210, and the extension portion 212 in the first pattern unit 210 passes through the connection port 210c of the angle area 210a and enters the interior of the angle area 210a, the boundary line of the extension portion 212 is parallel to the boundary line of the angle area 210a and is arranged closely, and the extension portion 212 is located in the middle position of the angle area 210a. Therefore, the boundary of the blank area between two adjacent pattern units 210 is defined by the boundary line of the protruding portion 212 and the boundary line of the angle area 210a, and the boundary line of the protruding portion 212 and the boundary line of the angle area 210a are parallel to each other and have a spacing of 0.01 mm (the gap between the pattern units 210 mentioned above), so the area of ​​the blank area becomes very small, and the ratio between the blank area and the pattern unit decreases.

[0037] In addition, Figure 3 It can also be found that each connection port 210c includes an extension section 211 and two protruding portions 212, the extension section 211 is located in the middle of the connection port 210c, and the protruding portions 212 are distributed on both sides of the extension section 211, so that a triangular first blank area 210d defined by three protruding portions 212 from different pattern units 210 is formed on both sides of the connection port 210c. A second blank area 210e in the shape of an elongated folded line is also formed between the protruding portion 212 and the angled area 210a.

[0038] Figure 6 Schematic diagram of the blank area between pattern units is shown. After measurement, it is known that the ratio of the blank area to the area of ​​the pattern unit is 8.2%. It should be noted that by reasonably changing the gap between the pattern units 210 and the shape of the pattern unit 210 in the above text, the above area ratio can be selected between 6% and 12%.

[0039] Figure 5 Shows Figure 4 Sectional view at AA, see Figure 5The extension section 211 and the extension portion 212 are both strip-shaped protrusions protruding outward from the sidewall reference plane. The strip-shaped protrusions are continuous in each pattern unit. The angle θ between the sidewall of the strip-shaped protrusion and the reference plane is 10-30°. The height h of the strip-shaped protrusion is 0.2-1 mm. The width w of the bottom of the strip-shaped protrusion is 0.1-0.5 mm. The cross section of the strip-shaped protrusion is triangular or trapezoidal. The above parameters are used to define the shape of the strip-shaped protrusions, so that light can be reflected back and forth between the sidewalls of the pattern unit, and finally the light intensity is weakened, thereby reducing the light reflected from the pattern unit, making the pattern fill appear darker.

[0040] An embodiment of the present invention also provides a tire vulcanization mold for manufacturing the above-mentioned tire, wherein a reverse pattern filling is provided on the inner surface of the mold at a position corresponding to the marking area of ​​the sidewall, and the concave and convex direction of the reverse pattern filling is opposite to that of the pattern filling, so that the pattern filling is formed in the marking area when the tire is vulcanized.

[0041] The above is a description of the embodiments of the present invention. Through the above description of the disclosed embodiments, professionals and technicians in the field can implement or use the present invention. Various modifications to these embodiments will be apparent to professionals and technicians in the field. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown in this article, but will conform to the widest range consistent with the principles and novelties disclosed herein.

Claims

1. A tire with improved color saturation, characterized in that: The tire comprises a marking area arranged on the sidewall, wherein the marking area is provided with a pattern filling, wherein the pattern filling is formed by a plurality of identical pattern units arranged regularly, wherein the pattern unit protrudes from a reference plane of the sidewall and has a side wall forming an angle with the reference plane, wherein the side wall is configured so that light is reflected between the side walls, thereby deepening the color displayed in the marking area, The pattern unit comprises a plurality of extension segments extending outward from the center, each extension segment is evenly distributed in the circumferential direction, an angle region is formed between two adjacent extension segments, the inner ends of each extension segment are fixedly connected to each other, and the outer ends of the extension segments are respectively provided with extension portions extending toward the angle regions on both sides of the extension segment, One of the extensions in one pattern unit extends into one of the angle regions of another pattern unit adjacent to the pattern unit, and the boundary line of the extension is parallel to and closely adjacent to the boundary line of the corresponding angle region, and the extension is located in the middle of the angle region; The boundary of the pattern unit can be contained in a circle with a diameter of 0.05~1.5mm; there is a blank area between the pattern units, and the area of ​​the blank area occupies 6~12% of the area of ​​the pattern unit.

2. The tire with improved color saturation according to claim 1, characterized in that: There is at least one pattern unit per square millimeter.

3. The tire with improved color saturation according to claim 1, characterized in that: The center distance between two adjacent pattern units does not exceed 0.87 mm.

4. The tire with improved color saturation according to claim 1, characterized in that: The distance between the boundary line of the protruding portion and the boundary line of the angle region is 0.005-0.05 mm.

5. The tire with improved color saturation according to claim 1, characterized in that: The extension section is a straight line extension, the protruding portion is a straight line extension, and the angle between two adjacent extension sections is equal to the angle between two adjacent protruding portions.

6. The tire with improved color saturation according to claim 1, characterized in that: The pattern unit includes three, four or six extending segments.

7. The tire with improved color saturation according to claim 1, characterized in that: The extension section and the protruding portion are both strip-shaped protrusions protruding outward from the tire sidewall reference plane. The strip-shaped protrusion is continuous in each pattern unit, the side wall is located on the side of the strip-shaped protrusion, the angle between the side wall and the reference plane is 10~30°, the height of the strip-shaped protrusion is 0.2~1mm, the width of the bottom of the strip-shaped protrusion is 0.1~0.5mm, and the cross-section of the strip-shaped protrusion is triangular or trapezoidal.

8. A tire vulcanization mold for manufacturing a tire with improved color saturation as claimed in any one of claims 1 to 7, characterized in that: A reverse pattern filling is arranged on the inner surface of the mold at a position corresponding to the marking area of ​​the sidewall, and the concave-convex direction of the reverse pattern filling is opposite to that of the pattern filling, so that the pattern filling is formed in the marking area when the tire is vulcanized.

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