Patent Application
20210107320
The present application relates to a field of tire, and specifically relates to a tire with novel sidewall pattern and a tire mold.
Sidewall(s) of a tire is/are provided with a lot of marks such as patterns, letters and the like. These marks are made by means of a tire mold, on surfaces of which groove structures are provided, and corresponding stripe structures are formed on the surfaces of the tire by vulcanization. A vulcanization mold for the tire is generally made of metal, the surfaces of the tire mold are often machined to be relative smooth, i.e. with higher smoothness. However, the outer surface of the tire obtained by this way, which is of black, is smooth, and such a smooth outer surface will reflect light rays, resulting in a deteriorated appearance of the surface of the tire.
The present application proposes a tire with a novel sidewall pattern, which tends to solve the above mentioned problem existed in the tire with sidewall patterns of the prior art.
The present application proposes a tire mold, which tends to solve the above mentioned problem existed in the tire mold of prior art.
The present application is realized as follows:
a tire with novel sidewall pattern including a tire body, a sidewall of the tire body has a labeling region, in which multiple pattern units are provided;
the pattern units are provided so as to protrude out from the tire body, the pattern units includes a curved portion having a curved section, and the curved portion further includes extension ends provided at both ends of the curved section.
In a preferred embodiment, the curved section is of arc shape and/or of multi-line segments, the extension ends are of arc shape and/or of multi-line segments;
a curvature radius of the extension ends and/or a circumscribed arc thereof is less than that of the curved section and/or a circumscribed arc thereof; for example, a curvature radius of the circumscribed arc of the extension ends in the form of multi-line segments or a curvature radius of the extension ends in the form of arc shape is less than that of the circumscribed arc of the curved section in the form of multi-line segments or that of the curved section in the form of arc shape;
preferably, a curving direction of the extension end is different from the curving direction of the curved section;
preferably, a length of the curved portion is 1-6 mm, preferably 2-4 mm, more preferably 3 mm;
preferably, each pattern unit is bilateral symmetry, and is periodically repeated; or each pattern unit is bilateral asymmetry;
preferably, an angle formed by connecting end points of multiple line segments of the curved portion is 90°-180°.
In a preferred embodiment, the extension ends of the multiple curved portions is connected so as to form a curved portion chain, and multiple curved portion chains are arranged in an interlaced way;
Two adjacent curved portion chains staggers from each other by ⅓-⅔ length of the curved portion; preferably, two adjacent curved portion chains staggers from each other by ½ length of the curved portion;
Preferably, there is a gap between two adjacent curved portions, and a size of the gap at the position with the smallest gap size is 0-0.5 mm;
Preferably, there is a gap between the adjacent curved section and extension end, a size of the gap is 0-0.5 mm.
In a preferred embodiment, the curved portion chains are arranged in parallel to each other, the positions of the sequent two curved portions arranged in up and down direction aligns with each other;
or, the curved portion chain is arranged in a curved line, preferably, the curved portion chain extends in a circle around a center of the tire;
preferably, the number of the circles or arcs formed by various curved portion chains or the length of the curved portion can be adjusted, thus guaranteeing that the curved portion chains are connected end to end.
In a further preferred embodiment, a connection portion is provided between at least two adjacent curved portions in the curved portion chains, so that in one same curved portion chain, at least the two adjacent curved portions are connected together.
In a preferred embodiment, the extension ends includes a half-closed circle and a transition section, the transition section is connected between the half-closed circle and the curved section, the half-closed circle is provided with an opening towards the curved section;
preferably, a radius of the half-closed circle is 0.06-0.3 mm, preferably 0.16 mm.
In a preferred embodiment, a distance between any two points on the extension end is less than or equal to 0.3 mm.
In a preferred embodiment, a distance between the sequent two curved portions is larger than 0.4 mm, preferably 0.5-1.5 mm.
In a preferred embodiment, the free space between the curved portions is filled with posts or branches, or posts or branches extend from sidewalls of the curved portion. Shapes and/or sizes of the posts and the branches can be selected such that the two adjacent curved portions are connected together by the posts and the branches.
A tire mold for manufacturing the above mentioned tire, characterized in that the tire mold includes a side plate provided with a groove structure mating with the pattern unit.
The beneficial effects of the present application are that a tire with novel sidewall pattern obtained by the above design includes at least the following advantage.
1. an obvious visual contrast with the positions not covered by the pattern region can be formed.
2. The curved section structure of the curved portion can improve rigidity of the sidewall pattern, the tire side may bulge and thus deform as it is pressed, if the deformation occurs at a position with continuous and relative long extension, the stress will concentrate at the extension, and the extension may even be broken. The curved structure of the curved section may damp and dissipate the stress of the bulged portion.
3. The discontinuous curved portions are not directly connected each other, thus avoiding stress concentration and improving lifetime of the sidewall pattern of the tire.
4. The extension ends at both ends of the curved portion can avoid breaking when stress concentration occurs at the two bulged ends.
The present application can produce the above mentioned tire by the tire mold obtained by the above mentioned design.
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings referring to which the embodiments are described, are explained briefly as follows, and it shall be understood that the drawings only show some embodiments of the present invention and shall not be deemed as limitation on the scope of the present invention. For one skilled in the art, other relating drawings can be obtained based on these drawings without creative efforts.
Reference numbers: pattern unit 101, curved portion 102, curved section 103, extension end 104, post 105, branch 106, circumscribed arc of curved section in the form of multi-line segment 107, circumscribed arc of extension end in the form of multi-line segment 108, connection section 109, tire mold 110, groove structure 111.
In order to make the object, technical solution and advantageous of the embodiments of the present invention clear, the technical solutions of the embodiments of the present invention will be described clearly and completely in combination with the drawings in the embodiments of the present application, and obviously, the embodiments described are not all of, but parts of the embodiments of the present invention. Based on the embodiments of the present application, any other embodiments obtained by one skilled in the art without creative efforts all belong to the protective scope of the present invention. Thus, the following detailed disclosure on the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention to be protected, but merely selected embodiments of the present invention.
In the description of the present invention, it shall be understood that the terms referring to orientations or positions are based on the orientations or positions shown in the drawings, and are just for ease of describing the present invention and simplifying the description, but do not indicate or imply that the element referred to must take the specific orientations, configured and operated in the specific orientations, so they shall not be understood as limitation on the present invention.
In the present invention, unless another specific prescription and definition, such terms as “interconnect”, “connect”, “secure” and the like shall be understood in a broad way, for example it can be fixedly connected, and can also be detachably connected, or integrated as one piece; it can be mechanically connected, and can also be electrically connected; it can be directly connected, and can also be indirectly connected via an intermediate; it can be internal communication between two elements, or can be interaction between the two elements. For one skilled in the art, the specific meaning of the above mentioned terms can be understood according to the detailed circumstance.
In the present invention, unless another specific prescription and definition, a first feature above or under a second feature can include directly contact between the first and second features, and can also include the situation that the first and the second features do not directly contact, but contacts via another feature therebetween. And, a first feature above, over and on a second feature includes the situations that the first feature is directly above the second feature, or is above and offset from the second feature, or just means that the first feature is at a level higher than the second feature. A first feature under, beneath and below a second feature includes the situations that the first feature is directly beneath the second feature, or is beneath and offset from the second feature, or just means that the first feature is at a level lower than the second feature.
The present embodiment provides a tire with a novel sidewall pattern, as shown in
Such a tire with novel sidewall pattern includes a tire body, a sidewall part of the tire body has a labeling region, in which multiple pattern units 101 are provided, the pattern units 101 are provided to protrude from the tire body, and the pattern unit 101 includes a curved portion 102 having a curved section 103 and extension ends 104 provided at both ends of the curved section 103.
The curved section 103 is arc shaped, and the extension ends 104 are also arc shaped, the curvature radius of the extension ends 104 is less than that of the curved section 103. Or, the curved section 103 is in the form of multi-line segments, and an angle formed by connecting the end points of the multiple line segments is 90°-180°. Or, the extension ends 104 are in the form of multi-line segments. Or, the curved section 103 and the extension ends 104 are respectively of a combined structure of multi-line segments and arc. The curvature radius of the extension ends 104 and/or its circumscribed arc is less than that of the curved section 103 and/or its circumscribed arc. A curving direction of the extension ends is different from that of the curved section.
Extension ends 104 of multiple curved portions 102 are connected each other, thus forming a curved portion chain, and multiple curved portion chains are arranged in an interlaced way, two adjacent curved portion chains interlace from each other by an amount of ⅓-⅔ of the length of the curved portion, preferably by an amount of ½ of the length of the curved portion 102.
The curved portion chains can also be arranged in a non-parallel way, for example they can be arranged in a circular arc shape, thus being capable of extending in a circular ring around the center of the tire. Curved portion chains in different circles can be adjusted in terms of the number or the length of the curved portion 102, thus guaranteeing that the curved portion chains are connected end to end.
In order to facilitate in arranging the pattern, each pattern unit 101 is bilateral symmetry, and is arranged to be periodically repeated. Of course, they can also be bilateral asymmetry, and the diameters and lengths and the like of the curved section 103 and the extension ends 104 can be adjusted according to the requirements.
The curved section 103 and the extension ends 104 are respectively of arc shaped; a certain gap is formed between the curved sections 103 and the extension ends 104 of the two curved portions arranged in up and down direction, with the amount of the gap being in a range of 0-0.5 mm and the bottoms thereof being preferably tangential to each other; a certain gap is formed between extension ends 104 of the two adjacent curved portions 102, with the amount of the gap being in a range of 0-0.5 mm; or the curved portion chains are arranged in parallel, the positions of the sequent two curved portions 102 arranged in up and down direction aligns with each other. Or, the curved portion chains are arranged in arc shape, preferably the curved portion chain extends in a circular ring around the center of the tire; preferably, for the circular ring or arc constituted by different curved portion chains, the number thereof or the length of the curved portions can be adjusted, so as to guarantee that the curved portions are connected end to end. The above mentioned gap refers to a smallest distance from one position in the curved portion to another curved portion adjacent to this curved portion, or in other words, refers to a distance from this position to another position in the adjacent curved portion that is closest to this position.
The extension end 104 includes a half-closed arc and a transition section, the half-closed arc is preferably a half-closed circle, and the transition section is connected between the half-closed arc and the curved section 103, the half-closed arc is provided with an opening towards the curved section 103; or, the extension end 104 is a half-closed shape of multi-line segments.
A distance between any two points on the extension end 104 is less than or equal to 0.3 mm. Preferably, when the extension end 104 is a half-closed circle, a radius of the half-closed circle is 0.06-0.3 mm, and preferably 0.16 mm.
A length of the curved portion 102 is 1-6 mm, preferably 2-4 mm, more preferably 3 mm; and/or the height of the pattern unit 101 protruding from the tire body is 0.1-1 mm; and/or a distance between the sequent two curved portions 102 in the up and down direction is larger than 0.4 mm, preferably 0.5-1.5 mm.
An angle θ formed by a sidewall surface of the curved portion 102 and a surface perpendicular to the tire body is in a range of 5° to 30°, preferably is in a range of 15° to 25°. A distance S between the sidewall surfaces of two sides of the curved portion increases gradually from the top side to the bottom, the top can be planar or arc surface, or can be a sharp shape.
The sidewall of the curved portion 102 is provided with branches; or the free spaces between the curved portions 102 can be filled with posts 105 or branches 106, as shown in
In a structure filled with the posts 105 or branches 106, there are also gaps between the posts 105 or branches 106 and at least one adjacent curved portion 102, the amount of the gap is also set in a range of 0-0.5 mm. In other words, if the gap between the adjacent curved portions is larger than 0.5 mm, the amount of the actual gap formed can still be controlled within the range of 0-0.5 mm by filling posts 105 or branches 106 in this gap.
In
In the pattern region of the tire sidewall, incident light onto protrudes formed in the pattern region (labeling region) is reflected onto the adjacent sidewall surfaces. Since the light is reflected back and forth between the sidewalls, the light is weakened. Therefore, essentially no light is reflected outside the pattern region, so that the pattern region looks black, and in comparison, the other regions (regions with letters and the rest regions of the tire sidewall) looks white. Therefore, a contrast is formed between the pattern region and the other regions. This improves contrast degree between the appearance of the pattern region and the regions not covered by the pattern.
Preferably, in the above mentioned curved portion 102, the average width of the curved section 103, the extension ends 104 and/or the connection section 109 is in the range of 0.03-3 mm, preferably in the range of 0.03-0.5 mm.
The tire provided by the present embodiment at least has the following advantageous over the tire of prior art.
1. an obvious visual contrast with the positions not covered by the pattern region can be formed.
2. the structure of the curved section 103 of the curved portion 102 can improve rigidity of the tire side pattern, the tire side may bulge and thus deform as it is pressed, if the deformation occurs at a position with continuous and relative long extension, the stress will concentrate at the extension, and the extension may even be broken. The curved structure of the curved section 103 may damp and dissipate the stress of the bulged portion.
3. The discontinuous curved portions 102 are not directly connected each other, thus avoiding stress concentration and improving lifetime of the tire side pattern of the tire.
4. The extension ends 104 at both ends of the curved portion 102 can avoid breaking when stress concentration occurs at the two bulged ends.
The present embodiment provides a tire mold 110 for the tire of embodiment 1, as shown in
The sidewall of the vulcanized tire can be formed with a designed protruding structure by the labeling region of the mold. The designed protruding structure forms a pattern region or letter region of the tire sidewall. The letter region shows letters, such as “ABCDEFGH” shown in a smooth surface.
The designed protruding structure can be in the pattern region, or can surround the letter region, or can be separately on the letter region. The pattern region is preferably provided at a position closer to radial outside of the tire. The groove structure 111 of the mold can be formed by using laser engraving.
The above disclosures are merely preferred embodiments of the present invention, and do not tend to limit the present invention; for one skilled in the art, the present invention can undergo various modifications and changes. Any modifications, equivalences, improvements and the like within the sprit and principle of the present invention are included in the protective scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201810222463.0 | Mar 2018 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2018/122600 | 12/21/2018 | WO | 00 |
