Two-wheeled vehicle tire with colored tire beads

Abstract

The invention provides a two-wheeled vehicle tire with colored tire beads, the two-wheeled vehicle tire comprises a tread, tire beads on two sides and a pair of tire beads, and the tread and the tire beads are respectively provided with rubber materials with different colors; the inner contour of the tire is symmetrically divided into side contours along the left side and the right side, and the side contours on the two sides are consistent in structure; the upper part of the side contour is provided with three arc sections, namely an upper arc section, a middle arc section and a lower arc section in sequence from top to bottom; the upper section arc is in smooth connection with the middle section arc, the middle section arc is connected with the lower section arc, and height difference is set at the joint of the middle section arc and the lower section arc; the starting point of the middle section arc starts from the position, close to the edge, of the tread, and a transition distance is formed between the end point of the middle section arc and the cut-off position of a tread pattern; on the basis of not influencing the appearance quality and the use performance of the tire, the problem of poor waves at the junction is solved, a repairing procedure is not needed, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to a two-wheeled vehicle tire with a colored tread, in particular to a cross-sectional profile design of a two-wheeled vehicle tire with a tread and a tread having different colors. Background Art

[0002] In recent years, two-wheeled vehicles with colored tire rims have been favored by consumers, such as Figure 1 The cross-sectional profile P1' of the existing colored bead tire is that the tread 1' and the bead 2' are set with different colored rubber materials. However, when the tire is vulcanized, it is easy to produce waves at the junction of the two colors. The intersection waves not only seriously affect the appearance quality of the tire, but also lead to a high repair rate, increase production and labor costs, and the repair glue contains certain chemicals, which does not meet the green and environmental protection concept of the industry. In order to improve this appearance defect, the current improvement methods are as follows Figure 2 As shown, a trim line A is added at the junction of the two colors of the tire sidewall 2'. The trim line A is a small protrusion on the upper part of the tire sidewall 2'. Although it has a certain effect in improving the boundary wave, the improvement effect is unstable and the tread 1' rubber material is prone to cross the line and still needs to be repaired. In addition, the trim line A reduces the appearance of the tire and is less accepted by consumers. Summary of the invention

[0003] The present invention aims to solve the problem of bad boundary waves without affecting the appearance quality and performance of the tire, and thus provides a two-wheeled vehicle tire with a colored bead, which does not require a repair process and reduces costs.

[0004] In order to solve the above technical problems, the present invention provides a two-wheeled vehicle tire with colored treads, the vehicle tire comprising a tread, treads on both sides and a pair of tire lips, the tread and the treads are respectively provided with rubber materials of different colors; the inner contour of the tire is symmetrically divided into side contours along the left and right sides, and the side contour structures on both sides are consistent;

[0005] The upper part of the side profile is set to three arc segments, which are arranged from top to bottom as an upper arc, a middle arc and a lower arc; the upper arc is smoothly connected to the middle arc, the middle arc is connected to the lower arc, and a height difference is set at the connection between the middle arc and the lower arc;

[0006] The starting point of the middle arc begins at a position close to the edge of the tread, and the end point of the middle arc has a transition distance from the end position of the tread pattern.

[0007] In a preferred embodiment, an obvious step difference is set at the connection between the middle arc and the lower arc.

[0008] In a preferred embodiment, the height range of the obvious step difference is set to 0.3mm-1.0mm.

[0009] In a preferred embodiment, the transition distance is set in the range of 2.0 mm-10.0 mm.

[0010] In a preferred embodiment, a first arc segment and a second arc segment are provided on the upper and lower edges of the obvious step difference; the first arc segment is smoothly connected to the second arc segment;

[0011] The first arc segment is connected to the middle arc segment, and the second arc segment is connected to the lower arc segment.

[0012] In a preferred embodiment, the radius of the first arc segment is smaller than the radius of the second arc segment.

[0013] In a preferred embodiment, both the first arc segment and the second arc segment are designed with rounded corners.

[0014] In a preferred embodiment, the upper arc corresponds to a position close to the center of the tread, the lower arc corresponds to a position on the upper side of the tread, and the middle arc connects the upper arc and the lower arc.

[0015] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0016] 1. This is achieved through innovative tire section profile design. The upper part of the tire inner profile is designed to consist of three arcs: the upper arc, the middle arc and the lower arc. The middle arc is smoothly connected to the upper arc, and there must be an obvious step difference between the middle arc and the lower arc. The middle arc starts at a position close to the edge of the tread, and the end point has a transition distance from the end position of the tread pattern. The step difference and transition distance design can accommodate and slow down the flow of rubber at the shoulder, produce a clear and regular separation boundary, and it is not easy for rubber to cross the line.

[0017] 2. By setting the edge of the step difference with a rounded corner structure that is smaller at the top and larger at the bottom, the step difference can be more effectively used to slow down and stop the flow of rubber, and the probability of stress concentration on the tire sidewall can be reduced. The color tire sidewall two-wheeled vehicle tire with the cross-sectional profile design of the present invention solves the problem of poor interface in the industry, eliminates the repair process, and has the effects of improving product appearance quality, reducing costs, and protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the cross-sectional profile of the existing colored bead tire;

[0019] Figure 2 Improvement method for adding renovation line A to the current one;

[0020] Figure 3 is the cross-sectional profile of the tire in the preferred embodiment of the present invention;

[0021] Figure 4 for Figure 3 The enlarged schematic diagram of the middle B part;

[0022] Figure 5 To adopt Figure 1 Appearance of the technical trial tire;

[0023] Figure 6 This is an appearance diagram of a tire manufactured using the technology of the preferred embodiment of the present invention.

[0024] Explanation of the accompanying reference numerals: P, cross-sectional profile; 1, tread; 2, tire edge; 3, tire lip; R1, upper arc; R2, middle arc; R3, lower arc; E, obvious step difference; O, pattern end position; a, transition distance; b, step difference height; R4, first arc segment chamfer; R5, second arc segment chamfer. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] refer to Figure 1-Figure 2The cross-sectional profile P1' design of the current colored bead tire is consistent with that of the ordinary all-black tire. The current improvement method of the small raised repair line A on the upper part of the bead 2' blocks the flow of the tread 1' rubber to a certain extent, and plays a role of separation and barrier at the boundary between the two rubbers. However, due to the difference in rubber fluidity and rubber thickness, the tread 1' rubber is still prone to cross-line phenomenon during production vulcanization, resulting in unstable improvement effect.

[0029] refer to Figure 3-Figure 4 Taking into account the appearance quality, cost, and environmental protection, this embodiment provides a two-wheeled vehicle tire with a colored tread. On the basis of not affecting the appearance quality and performance of the tire, it solves the above-mentioned poor interface wave, does not require a repair process, and reduces costs.

[0030] like Figure 3 The tire cross-sectional profile P is shown, wherein the vertical direction is set as the tire radial direction, the transverse direction is set as the tire axial direction, and the single-point dash line represents the equatorial plane. The tire of this embodiment includes a tread 1, sidewalls 2 on both sides, and a pair of tire lips 3, and the tread 1 and the sidewalls 2 are respectively provided with rubber materials of different colors.

[0031] The cross-sectional profile P is symmetrically arranged along the equatorial plane, and the profile design on both sides of the equatorial plane is consistent, that is, the inner profile of the tire is symmetrically divided into side profiles along the left and right sides, and the side profile structures on both sides are consistent. This embodiment describes the implementation method based on the side profile structure design on one side.

[0032] like Figure 3 The upper part of the side profile is set to consist of three arcs, including an upper arc R1, a middle arc R2 and a lower arc R3 from top to bottom. The upper arc R1 corresponds to a position close to the center of the tread 1, the lower arc R3 corresponds to a position on the upper part of the sidewall 2, and the middle arc R2 connects the upper arc R1 and the lower arc R3.

[0033] like Figure 4 The middle arc R2 is smoothly connected to the upper arc R1, but there is an obvious step difference E between the middle arc R2 and the lower arc R3, that is, the upper arc R1 slowly transitions to the middle arc R2, and there must be a height difference at the connection between the middle arc R2 and the lower arc R3. The middle arc R2 starts at a position close to the edge of the tread 1, and the end point has a transition distance a from the end position O of the tread pattern of the tread 1. The middle arc R2 designed in this way can accommodate and slow down the flow of rubber at the shoulder, and the obvious step difference with the lower arc R3 can limit the flow of tread rubber to the obvious step difference E. The two rubbers have a clear and regular separation boundary, and the boundary step difference structure is less likely to cause rubber to cross the line than the current repair line.

[0034] According to the tread 1 rubber material size, shoulder style and product characteristics of the colored sidewall tire of the two-wheeled vehicle tire, the transition distance a is preferably 2.0mm-10.0mm. The transition distance a is the transition distance of the tread 1 rubber material. If it is set too short, it will not be able to effectively slow down and stop the flow of the rubber material. If the transition distance a is too long, the coverage width of the colored rubber material of the sidewall 2 will be greatly shortened, affecting the appearance quality.

[0035] The preferred size of the height b of the obvious step difference E is: 0.3mm-1.0mm. If the height of the step difference of the height b section is too low, the flow of the rubber will not be effectively stopped, causing the rubber to cross the line. If the height of the step difference of the height b section is too high, the junction height difference of the two different colors of rubber is too large, which is also easy to cause stress concentration problems on the tire edge 2, resulting in negative impact on the performance.

[0036] Considering the appearance and performance of the boundary, the upper and lower edges of the obvious step difference E are further rounded, that is, the upper and lower edges of the obvious step difference E are provided with a first arc segment and a second arc segment, wherein the first arc segment connects the middle arc segment, and the second arc segment connects the lower arc segment, and the first arc segment chamfer R4 is set to be smaller than the second arc segment chamfer R5. Such a rounded structure design with a small top and a large bottom can help the obvious step difference E to more effectively play the role of terminating the flow of rubber, and further reduce the probability of stress concentration on the tire edge 2. On the other hand, the rounded corners of the upper and lower edges can visually weaken and hide some of the minor boundary irregularities.

[0037] In summary, the present invention adopts an innovative tire cross-sectional profile design: the upper part of the tire inner profile is set to be composed of three circular arcs, namely, an upper arc R1, a middle arc R2 and a lower arc R3; the middle arc R2 and the upper arc R1 are smoothly connected, while the middle arc R2 and the lower arc R3 must be set with an obvious step difference E; the middle arc R2 starts at a position close to the edge of the tread 1, and the end point has a transition distance a from the end position O of the tread pattern of the tread 1; the transition distance a is preferably 2.0-10.0 mm in size; the height b of the obvious step difference E is preferably 0.3-1.0 mm in size; the obvious step difference E and the transition distance a are designed to accommodate and slow down the flow of rubber at the shoulder of the tire, produce a clear and regular separation boundary, and are less likely to cause the rubber to cross the line; further, the edge of the obvious step difference E is set with a rounded structure with a small top and a large bottom, which can help the obvious step difference E to more effectively play the role of slowing down and terminating the flow of rubber, and further reduce the probability of stress concentration on the tire edge 2. The colored bead two-wheeled vehicle tire designed in this embodiment solves the problem of poor interface in the industry, eliminates the need for repairing procedures, and has the effects of improving product appearance quality, reducing costs, and protecting the environment.

[0038] Use existing Figure 1The technology and the tire design of this embodiment are respectively trial-produced with a specification of 700X40C bicycle brown skin edge tires. Under the same other conditions, the effects of the finished tire colored bead are as follows: Figure 5 , 6. By comparison, we can see that: Figure 5 Use existing Figure 1 The tires produced by technical trials have obvious wavy edges between the two rubber materials on the tire sidewalls and need to be repaired with repair fluid; Figure 6 The tires trial-produced by the technology of the present invention have clear, regular and round rubber material boundaries on the tire sidewalls, and do not need to be repaired. Through actual verification, the appearance quality of the tires trial-produced by the technology of the present invention is better than that of the existing technology tires, and the cost and environmental protection problems caused by repair are avoided.

[0039] The above is only a preferred specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. A two-wheeled vehicle tire with colored bead, the tire comprising a tread, two side bead and a pair of bead lips, the tread and the bead are respectively provided with rubber materials of different colors; characterized in that: The inner contour of the tire is symmetrically divided into side contours along the left and right sides, and the side contour structures on both sides are consistent; The upper part of the side profile is set to three arc segments, which are arranged from top to bottom as an upper arc, a middle arc and a lower arc; the upper arc is smoothly connected to the middle arc, the middle arc is connected to the lower arc, and a height difference is set at the connection between the middle arc and the lower arc; The starting point of the middle arc begins at a position close to the edge of the tread, and the end point of the middle arc has a transition distance from the end position of the tread pattern.

2. A two-wheeled vehicle tire with a colored bead according to claim 1, characterized in that: An obvious step difference is arranged at the connection between the middle arc and the lower arc.

3. A two-wheeled vehicle tire with a colored bead according to claim 2, characterized in that: The height range of the obvious step difference is set at 0.3mm-1.0mm.

4. A two-wheeled vehicle tire with a colored bead according to claim 1, characterized in that: The transition distance is set in the range of 2.0 mm-10.0 mm.

5. A two-wheeled vehicle tire with a colored bead according to claim 2, characterized in that: A first arc segment and a second arc segment are provided on the upper and lower edges of the obvious step difference; the first arc segment is smoothly connected to the second arc segment; The first arc segment is connected to the middle arc segment, and the second arc segment is connected to the lower arc segment.

6. A two-wheeled vehicle tire with a colored bead according to claim 5, characterized in that: The radius of the first arc segment is smaller than the radius of the second arc segment.

7. A two-wheeled vehicle tire with a colored bead according to claim 6, characterized in that: The first arc segment and the second arc segment are both designed with rounded corners.

8. The two-wheeled vehicle tire with colored bead according to claim 1, characterized in that: The upper arc corresponds to a position close to the center of the tread, the lower arc corresponds to a position on the upper part of the tire edge, and the middle arc connects the upper arc and the lower arc.

Images