Photochromic temperature-sensing early warning tire

Abstract

This utility model discloses a photochromic temperature-sensitive warning tire, belonging to the field of automotive tire technology. It includes a tire body, ultraviolet-excited fluorescent strips, and a thermosensitive coating. The tire body has several longitudinal tread grooves on its tread. Several ultraviolet-excited fluorescent strips are embedded in the tire body's tread, avoiding the longitudinal tread grooves. The thermosensitive coating is annular and applied to the tire sidewall. This invention solves the problems of existing technologies where traditional tires lack a direct display of tire wear, making it difficult for drivers to judge tire wear at night or in low light conditions. It also addresses the issue that traditional tires cannot visually detect tire temperature, increasing driving safety hazards and the potential for accidents caused by tire overheating or icing. This significantly improves tire safety monitoring capabilities, helping drivers detect potential risks early through dual visual warnings of temperature and wear, thus reducing the accident rate.

Description

Technical Field

[0001] This utility model relates to the field of automotive tire technology, specifically to a photochromic temperature-sensitive early warning tire. Background Technology

[0002] With the rapid development of the social economy and the continuous improvement of people's living standards, the number of family cars has increased significantly, and private cars have become an important tool for modern families' daily travel. As the only part of the vehicle that comes into contact with the road surface, the performance of tires directly affects the vehicle's driving comfort, safety, and handling.

[0003] However, traditional tires have some problems. On the one hand, traditional tires usually rely on visual observation of the wear of the tread grooves to judge the tire's wear condition, lacking a direct display function for tire wear. At night or in low light conditions, it is even more difficult for drivers to judge the tire's wear condition, further increasing driving safety hazards. On the other hand, traditional tires usually use a single color design (mostly black), making it impossible to visually perceive the tire's temperature. This makes it difficult for drivers to accurately understand the tire's working condition, increasing the possibility of accidents caused by potential risks such as tire overheating or icing.

[0004] Therefore, how to provide a photochromic temperature-sensitive early warning tire that overcomes the shortcomings of existing technologies is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] Therefore, this utility model provides a photochromic temperature-sensitive early warning tire to solve the problems in the prior art where traditional tires lack a visual display function to show the degree of tire wear, making it more difficult for drivers to judge the tire wear at night or in low light conditions, and traditional tires cannot be visually perceived by the naked eye, which increases the driving safety hazards and the possibility of accidents caused by potential risks such as tire overheating or icing.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a photochromic temperature-sensitive early warning tire, comprising:

[0008] The tire body has several longitudinal tread grooves on its tread.

[0009] Several ultraviolet-excited fluorescent strips are embedded on the surface of the tire body and are arranged to avoid the longitudinal tread grooves;

[0010] A thermo-responsive coating, in the form of a ring, is applied to the sidewall of the tire body.

[0011] Furthermore, the cross-sectional shape of the ultraviolet-excited fluorescent strip is an inverted triangle.

[0012] Furthermore, the upper end of the ultraviolet-excited fluorescent strip is 1.5 mm away from the tread surface of the tire body.

[0013] Furthermore, the thermosensitive responsive coating is a thermochromic microcapsule composite layer.

[0014] Furthermore, the thickness of the thermosensitive coating is 30-50 μm.

[0015] Furthermore, there are at least four ultraviolet-excited fluorescent strips, which are spaced apart between the longitudinal grooves.

[0016] Furthermore, the ultraviolet-excited fluorescent strip is made of a photoluminescent energy storage material.

[0017] This utility model has the following advantages:

[0018] This invention uses an inverted triangle as the cross-sectional shape of the ultraviolet-excited fluorescent strip. This causes the visible area of ​​the strip to gradually decrease with increasing mileage. In bright light, the visible area allows direct observation to determine tire wear. In low light conditions, the strip slowly emits visible light, enabling the driver to quickly assess tire wear based on its visible area, significantly improving safety at night or in low-light conditions. Furthermore, by coating the tire sidewall with a thermosensitive coating, the tire displays different colors according to temperature changes: blue at low temperatures to indicate the risk of icing, and red at high temperatures to warn of overheating. This allows the driver to visually perceive the tire temperature and take timely action to avoid accidents such as tire blowouts or skidding caused by abnormal tire temperature. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 A three-dimensional view of a photochromic temperature-sensitive early warning tire provided by this utility model;

[0022] Figure 2 A perspective view of the tire body provided for this utility model;

[0023] Figure 3 Provided by this utility model Figure 2 Enlarged view of the A-structure;

[0024] Figure 4 A cross-sectional view of a photochromic temperature-sensitive early warning tire provided by this utility model.

[0025] In the figure: 1. Tire body; 2. Longitudinal tread groove; 3. UV-excited fluorescent strip; 4. Thermosensitive coating. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Please refer to Figures 1-4 The photochromic temperature-sensing early warning tire disclosed in this utility model will now be described. This utility model consists of three parts, as follows: Figures 1-4 As shown, the device includes a tire body 1, ultraviolet-excited fluorescent strips 3, and a thermosensitive coating 4. The tire body 1 has several longitudinal tread grooves 2 on its tread surface. Several ultraviolet-excited fluorescent strips 3 are embedded in the tread surface of the tire body 1 and are positioned to avoid the longitudinal tread grooves 2. The thermosensitive coating 4 is annular and coated on the sidewall of the tire body 1. Preferably, the ultraviolet-excited fluorescent strips 3 are made of photoluminescent energy storage material.

[0028] In this embodiment, the ultraviolet-excited fluorescent strip 3 is made of a transparent elastomer substrate blended with photoluminescent energy storage material. Photoluminescent energy storage material is a commonly used material in the prior art. It is a type of fluorescent material that, after being excited by light, can store energy and slowly release visible light in a dark environment. Its luminescence mechanism is as follows:

[0029] Excitation stage: Dopant ions in the matrix lattice (such as Eu) 2+ Dy 3+ When light energy is absorbed, electrons transition to an excited state.

[0030] Energy storage stage: Electrons are captured by lattice defects (such as oxygen vacancies), forming "trap energy levels".

[0031] Emission stage: When the environment darkens, electrons slowly escape and return to the ground state, releasing photons (afterglow emission).

[0032] In this embodiment, the preferred photoluminescent energy storage material is SrAl2O4:Eu in the aluminate system. 2+ ,Dy 3+ This photoluminescent energy storage material produces green light with an initial luminous intensity of ≥3000mcd / ㎡ and an afterglow duration of ≥12 hours.

[0033] Preferably, the thermosensitive coating 4 is a thermochromic microcapsule composite layer. The thermochromic microcapsule composite layer can display red at higher temperatures and blue at lower temperatures.

[0034] By coating the tire sidewall with a thermo-responsive coating 4, the tire can display different colors according to temperature changes. It turns blue at low temperatures to indicate the risk of icing and red at high temperatures to warn of overheating, allowing the driver to intuitively perceive the tire temperature status and take timely measures to avoid accidents such as tire blowouts or skidding caused by abnormal tire temperature.

[0035] Thermochromic microcapsules are a commonly used material in existing technologies. Thermochromic microcapsules typically consist of three parts: core: thermochromic material (such as leuco dyes, liquid crystals, or inorganic compounds); wall: polymeric material (such as gelatin, polyurea, or polymethyl methacrylate PMMA) used to protect the core and control the color change response; solvent / additive: used to adjust the color change temperature (such as fatty alcohols or esters).

[0036] One possible implementation method involves forming an organic reversible thermochromic system using thermochromic microcapsules, comprising: a leuco dye selected from dyes that combine with a color developer to form a blue color at low temperatures (such as CVL crystal violet lactone); a high-temperature red dye selected from dyes that are stable at high temperatures (such as anthraquinone red or spiropyran dyes); a color developer used to form a blue complex with the leuco dye (such as phenolic resin); and a solvent used to control the color-changing temperature (such as behenol or triacontanol).

[0037] like Figure 4 As shown, the cross-sectional shape of the ultraviolet-excited fluorescent strip 3 is an inverted triangle. By setting the cross-sectional shape of the ultraviolet-excited fluorescent strip 3 to an inverted triangle, the visible area of ​​the ultraviolet-excited fluorescent strip 3 gradually decreases as the driving mileage increases. When the light is sufficient, the visible area can be directly observed to determine the tire wear. When the light is insufficient, the ultraviolet-excited fluorescent strip 3 can slowly release visible light in the dark environment, allowing the driver to quickly judge the tire wear based on its visible area, significantly improving safety at night or in low light conditions.

[0038] Preferably, the upper end of the UV-excited fluorescent strip 3 is 1.5 mm from the tread surface of the tire body 1; the lower end of the UV-excited fluorescent strip 3 extends 3 mm above the tread base rubber. When the tread just begins to wear, the UV-excited fluorescent strip 3 will not begin to wear. When the tread wears 1.5 mm, the UV-excited fluorescent strip 3 will begin to wear, ensuring it remains clearly visible before the tire wears to its safe limit, thus avoiding premature failure. When the UV-excited fluorescent strip 3 is completely worn, that is, when only 3 mm of tread remains...

[0039] Preferably, the thickness of the thermosensitive coating 4 is 30-50 μm. The thermosensitive coating is uniformly coated on the tire sidewall with a thickness of 30-50 μm, which takes into account both the color change response speed and durability, and is not easy to peel off or fail after long-term use.

[0040] Preferably, there are at least four ultraviolet-excited fluorescent strips 3, which are spaced apart between several longitudinal tread grooves 2. The four or more ultraviolet-excited fluorescent strips 3 are distributed between the tread grooves, covering the key areas of the tire tread, and realizing simultaneous monitoring of wear at multiple locations.

[0041] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A photochromic temperature-sensing warning tire, characterized in that, include: The tire body (1) has several longitudinal tread grooves (2) on its tread. Several ultraviolet-excited fluorescent strips (3) are embedded on the surface of the tire body (1) and are set away from the longitudinal tread grooves (2); A thermo-responsive coating (4), which is in the shape of a ring, is applied to the sidewall of the tire body (1).

2. Photochromic temperature-sensing warning tire according to claim 1, characterized in that, The cross-sectional shape of the ultraviolet-excited fluorescent strip (3) is an inverted triangle.

3. Photochromic temperature-sensing warning tire according to claim 2, characterized in that, The upper end of the ultraviolet-excited fluorescent strip (3) is 1.5 mm away from the tread surface of the tire body (1).

4. Photochromic temperature-sensing warning tire according to claim 1, characterized in that, The thermosensitive responsive coating (4) is a thermochromic microcapsule composite layer.

5. Photochromic temperature-sensing warning tire according to claim 4, characterized in that, The thickness of the thermosensitive responsive coating (4) is 30-50 μm.

6. Photochromic temperature-sensing warning tire according to claim 1, characterized in that, There are at least four ultraviolet-excited fluorescent strips (3), and the four ultraviolet-excited fluorescent strips (3) are spaced apart between several longitudinal patterned grooves (2).

7. Photochromic temperature-sensing warning tire according to claim 1, characterized in that, The ultraviolet-excited fluorescent strip (3) is made of photoluminescent energy storage material.

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