Tire with passive heat dissipation function

Abstract

The application provides a tire with passive heat dissipation function, and relates to the technical field of tire production, which comprises a tire body, a tire body cord layer, a buffer layer and a plurality of passive heat dissipation devices; the tire body cord layer is fixedly connected with the tire body, the buffer layer is located between the tire body and the tire body cord layer, and the plurality of passive heat dissipation devices are arranged in the tire body and fixedly connected with the tire body. The buffer layer is arranged between the tire body and the tire body cord layer, so that the vibration between the tire and the road surface during rotation can be reduced, and the noise generated by tire vibration can be reduced; the plurality of passive heat dissipation devices are arranged in the tire body and are driven by the extrusion force generated when the tire contacts the ground, so that the air flow in the cavity of the tire body is controlled, the heat dissipation of the tire is accelerated, and the use safety of the tire is improved.

Description

Technical Field

[0001] This invention relates to the field of tire manufacturing technology, and in particular to a tire with passive heat dissipation function. Background Technology

[0002] Tires are complex commodities composed of various materials, including rubber, steel wire, and fabric. Their main functions include rolling, bearing loads, steering vehicles, transmitting braking and power output, and absorbing noise and mechanical vibrations.

[0003] The carcass plies are a crucial component of a tire, often referred to as its skeleton. Their primary function is to bear loads, maintain the tire's shape and dimensions, and provide necessary strength. The plies are composed of multiple layers of rubber-coated cords bonded together with rubber; these cords can be made of materials such as steel wire, synthetic fibers, or natural fibers. There are two main arrangements of the plies: bias-ply and radial. Bias-ply tires consist of several layers of rubber-coated cords, with adjacent layers having the same cord angle and crisscrossing each other. The number of plies is generally even, ensuring even load distribution. Radial tires, on the other hand, have cords arranged perpendicular to the tire's rolling direction, with the cord direction at an angle of 90 degrees or close to 90 degrees to the tire's centerline. The number of plies and the choice of materials depend on the tire's specifications, type, and intended use. For example, larger tires typically use two or more plies to enhance their strength and durability. Increasing the number of plies increases tire strength but reduces elasticity. In addition, the ply layer also protects the tread from external damage and adapts to deformation through its flexibility and elasticity. In some new low rolling resistance tires, polyester ply layers are used to reduce tire weight, thereby reducing the rolling resistance coefficient and achieving energy-saving and environmentally friendly effects.

[0004] Patent CN106132727B discloses an improved main ply shape for tires, comprising a main ply that is displaced from a conventional equilibrium curve along the tire shoulder and upper sidewall region. This displacement allows for a more uniform increase in air volume along the tread region, reducing the hardness difference between the tire center and shoulder, thus lowering load sensitivity and / or reducing cracking tendency. While this patent addresses the issues of reduced load sensitivity and / or cracking tendency between the tire center and shoulder, it does not address specific structural measures for noise and heat generated during tire rotation. Summary of the Invention

[0005] This invention provides a tire with passive heat dissipation function to solve the deficiency in the prior art that no specific structural measures are taken to address the noise and heat generated by the tire during rotation.

[0006] On one hand, the present invention provides a tire with passive heat dissipation function, comprising: a tire carcass, a tire carcass ply, a buffer layer, and a plurality of passive heat dissipation devices; the tire carcass ply is fixedly connected to the tire carcass, the buffer layer is located between the tire carcass and the tire carcass ply, and the plurality of passive heat dissipation devices are disposed in the tire carcass and fixedly connected to the tire carcass.

[0007] According to the present invention, a tire with passive heat dissipation function is provided, wherein the buffer layer includes a buffer plate and a plurality of shape-inhibiting rings, the buffer plate is fixedly connected to the tire carcass, and the plurality of shape-inhibiting rings are located between the buffer plate and the tire carcass ply.

[0008] According to the present invention, a tire with passive heat dissipation function is provided. The passive heat dissipation device includes a drive compartment and two air flow compartments, which are fixedly connected to both sides of the drive compartment.

[0009] According to the present invention, a tire with passive heat dissipation function is provided. The passive heat dissipation device further includes two air wheels and a drive unit. The two air wheels are respectively placed in two air flow chambers and are rotatably connected to the drive chambers. The drive unit is fixedly connected to the two air wheels.

[0010] According to the present invention, a tire with passive heat dissipation function is provided. The drive unit includes a pressing member, a drive assembly, two ratchet assemblies and a spring. The two ratchet assemblies are disposed on both sides of the drive assembly and are detachably connected to the drive assembly. The two ends of the spring are fixedly connected to the pressing member and the drive chamber, respectively. The pressing member engages with the drive assembly, and the drive assembly is fixedly connected to the two air wheels.

[0011] According to the present invention, a tire with passive heat dissipation function is provided. The drive assembly includes two rotating bushings and a gear. The two bushings are fixedly connected to both sides of the gear and rotatably connected to the drive housing.

[0012] According to the present invention, a tire with passive heat dissipation function is provided. The ratchet assembly includes a ratchet, ratchet teeth and a second spring. The two ends of the second spring are fixedly connected to the ratchet teeth and the bushing, respectively. The ratchet teeth mesh with the ratchet, and the ratchet is fixedly connected to the air wheel.

[0013] According to the present invention, a tire with passive heat dissipation function is provided, wherein the buffer plate has a wavy cross section and is made of flexible material.

[0014] According to the present invention, a tire with passive heat dissipation function is provided, wherein the shape suppression ring is closed in the circumferential direction of the tire and is fixedly connected to the tire carcass ply.

[0015] The tire with passive heat dissipation function provided by the present invention also includes two toe wires, which are located at both ends of the tire body and are fixedly connected to the tire body.

[0016] The present invention provides a tire with passive heat dissipation function. By placing a buffer layer between the tire carcass and the tire carcass ply, the vibration between the tire and the road surface during rotation can be reduced, thereby reducing the noise generated by tire vibration. Multiple passive heat dissipation devices are set in the tire body and driven by the compressive force generated when the tire contacts the ground, thereby controlling the air flow in the tire carcass cavity, accelerating tire heat dissipation, and improving the tire's safety in use.

[0017] The present invention provides a tire with passive heat dissipation function. By closing the shape-inhibiting ring around the tire circumference and fixing it to the tire carcass ply, the tire prevents the buffer plate in the buffer layer from undergoing irreversible deformation due to impact, which greatly increases the service life of the buffer plate and further improves the safety of tire use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of a tire with passive heat dissipation function provided in Embodiment 1 of the present invention;

[0020] Figure 2 yes Figure 1 A front view of a tire with passive heat dissipation function;

[0021] Figure 3 yes Figure 1 A top view of a tire with passive heat dissipation function;

[0022] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure along the AA direction;

[0023] Figure 5 yes Figure 1 A three-dimensional structural diagram of the passive heat dissipation device in the middle;

[0024] Figure 6 yes Figure 5 Top view of the passive cooling device in the middle;

[0025] Figure 7 yes Figure 6 A schematic diagram of the cross-sectional structure along the BB direction;

[0026] Figure 8 yes Figure 5 A partial structural diagram of the passive heat dissipation device in the middle;

[0027] Figure 9 yes Figure 8 A partial structural side view of the passive heat dissipation device.

[0028] Figure label:

[0029] 1. Tire carcass; 2. Tire carcass ply; 3. Buffer layer; 30. Buffer plate; 31. Shape suppression ring; 4. Passive heat dissipation device; 40. Drive compartment; 41. Airflow compartment; 42. Pneumatic wheel; 43. Drive unit; 430. Pressing element; 431. Drive assembly; 4310. Bushing; 4311. Gear; 432. Ratchet assembly; 4320. Ratchet; 4321. Ratchet tooth; 4322. Spring 2; 433. Spring 1; 5. Toe wire. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0031] The following is combined Figures 1-9 This invention describes a tire with passive heat dissipation function.

[0032] Example 1:

[0033] like Figures 1-9 As shown in the illustration, an embodiment of the present invention provides a tire with passive heat dissipation function, comprising: a tire carcass 1, a tire carcass ply 2, a buffer layer 3, and multiple passive heat dissipation devices 4. The tire carcass 1 includes a tread, sidewall, and belt layer. The tread is the part of the tire that contacts the ground, responsible for bearing air pressure and absorbing shock. It is made of abrasion-resistant rubber compounds for grip and steering. The tread's design includes circumferential and lateral grooves to facilitate the drainage of rainwater from the contact area, improving performance on wet roads. The sidewall covers the body layer and belt layer, protecting the remaining outer shell and providing location information for the tire. The sidewall is typically made of a mixture of natural rubber and polybutadiene rubber, styrene-butadiene rubber, etc., to provide properties such as resistance to ozone and oxygen erosion, fatigue crack resistance, and compatibility with fabrics and other rubber compounds. The belt layer consists of multiple layers of steel wire or synthetic fabric ropes, providing rigidity to the tread and enhancing its strength and stability. Belt layer sheets and belt layer profiles reduce interlayer shear at the belt layer edges, ensuring the overall performance of the tire.

[0034] The carcass ply 2 is fixedly connected to the carcass 1. The carcass ply 2 typically consists of multiple layers of rubber-coated cords, usually made of materials such as nylon, polyester, fiberglass, or steel, which enhance the tire's strength. A buffer layer 3 is located between the carcass 1 and the carcass ply 2. The buffer layer 3 buffers vibrations caused by impacts or friction between the carcass 1 and the ground, thereby reducing noise generated by vibration. Multiple passive cooling devices 4 are installed inside the carcass 1 and fixedly connected to it. The carcass 1 has two circumferentially penetrating cavities between the shoulder and the inner liner, symmetrical about the carcass's central axis. Multiple passive cooling devices 4 are arranged in a circumferential ring array within the carcass 1. Vibrations generated during tire rotation activate the passive cooling devices 4, keeping the air within the cavities flowing. Airflow cooling is a heat dissipation method that uses airflow to remove heat, mainly divided into natural convection and forced convection. Natural convection utilizes the buoyancy caused by temperature differences to allow air to flow automatically, while forced convection uses fans or other mechanical devices to drive airflow for heat dissipation. Multiple passive cooling devices 4 are fixedly connected to the tire body 1 to ensure that they do not detach or shift during vehicle operation, thus preventing them from affecting tire dynamic balance. Tire dynamic balancing refers to adjusting the mass distribution between the tire and the rim to achieve a relatively balanced state, thereby reducing tire vibration during driving and improving driving stability and safety. The principle is that when the tire rotates, the axis of rotation is not aligned with the center of gravity, mainly due to uneven tire mass distribution. When the car wheels travel at high speeds, uneven tire mass distribution creates a dynamic imbalance, causing wheel vibration or bumps during vehicle operation.

[0035] The buffer layer 3 includes a buffer plate 30 and multiple shape-suppressing rings 31. The buffer plate 30 has a corrugated cross-section. The corrugated plate has a significant effect on reducing vibration, a fact verified in multiple studies. First, the corrugated plate, through its unique geometry, effectively reduces structural vibration and noise. For example, corrugated plates (wave-shaped plates) typically adopt a sinusoidal or triangular wave shape; their size and spacing determine their performance. This design can improve the stiffness and stability of the structure, thereby reducing vibration. The corrugated plate not only reduces the average value and fluctuation amplitude of the drag coefficient but also effectively suppresses pressure fluctuations, thus reducing noise. The buffer plate 30 is made of a flexible material. Flexible materials are those that can deform under external forces and return to their original shape, possessing good flexibility and ductility. Common flexible materials include polyvinyl alcohol (PVA), polyester (PET), polyimide (PI), polyethylene naphthalate (PEN), paper, and textile materials. Key characteristics of flexible materials include thinness, transparency, good flexibility, insulation, and corrosion resistance. The buffer plate 30 typically uses a polyurethane track elastic damping pad. Polyurethane elastomers possess high strength, good creep resistance, excellent resilience, impact resistance, and flexural fatigue resistance, while also being wear-resistant and dimensionally stable. Furthermore, polyurethane materials maintain flexibility at low temperatures and good performance at high temperatures, making them excellent in dynamic mechanical applications. Polyurethane elastomer materials have good load-bearing and vibration damping properties, and are widely used in vibration reduction and noise reduction in rail transit lines. In addition, each micropore of the microporous polyurethane elastomer damping pad can be considered as an air spring model, thus providing a very outstanding damping effect. Multiple shape-damping rings 31 are located between the buffer plate 30 and the tire carcass ply 2. The shape-damping rings 31 are made of rigid materials, typically stainless steel. Stainless steel is an alloy steel with many excellent properties, including corrosion resistance, heat resistance, good processing performance, and aesthetic appeal and durability. Stainless steel generally has high strength and hardness; for example, martensitic stainless steel can have its hardness and strength significantly improved through heat treatment, but its toughness is relatively low. Austenitic stainless steel is known for its high strength and good toughness, making it suitable for applications requiring both high strength and good ductility. Therefore, rings made of stainless steel have high resistance to deformation, thus increasing the service life of the buffer plate 30.

[0036] The buffer plate 30 is fixedly connected to the tire carcass 1 to prevent it from shifting due to pressure or vibration during tire operation. The shape-inhibiting ring 31 is closed circumferentially around the tire and fixedly connected to the tire carcass ply 2. Specifically, the shape-inhibiting ring 31 is inserted through the bottom of the threads in the tire carcass ply 2, effectively securing it to the tire carcass ply 2 without any relative positional shift.

[0037] The passive cooling device 4 includes a drive chamber 40 and two airflow chambers 41, which are fixedly connected to both sides of the drive chamber 40. The airflow chambers 41 serve to protect the impeller 42 and secure the passive cooling device 4. The airflow chambers 41 are made of lightweight aluminum alloy, which is characterized by high hardness and strength. When pressure is applied between the tire and the ground, the high hardness and strength of the airflow chambers 41 prevent deformation, thus ensuring the normal operation of the passive cooling device 4.

[0038] The passive cooling device 4 also includes two impellers 42 and a drive unit 43. The two impellers 42 are respectively placed in two airflow chambers 41 and are rotatably connected to the drive chamber 40. The impellers 42 are impeller structures, that is, cylindrical bodies arranged in a ring around their circumference and fixedly connected to fan blades. When flowing air passes through the impeller, the kinetic energy of the wind is converted into mechanical energy. The impeller material used for the impellers 42 is plastic or composite material. The composite material is carbon fiber reinforced polymer composite material, which has high strength and lightweight properties, and is suitable for applications requiring high strength and corrosion resistance. The drive unit 43 is fixedly connected to the two impellers 42.

[0039] The drive unit 43 includes a pressing member 430, a drive assembly 431, two ratchet assemblies 432, and a spring 433. The two ratchet assemblies 432 are located on both sides of the drive assembly 431 and are detachably connected to it. The ratchet assemblies 432 are used to regulate the rotation state of the drive assembly 431, ensuring that the pneumatic wheels 42 always rotate in the same direction when the drive assembly 431 rotates clockwise or counterclockwise. The spring 433 is fixedly connected at both ends to the pressing member 430 and the drive chamber 40, respectively. The main function of the spring 433 is to allow the pressing member 430 to return to its initial state and position when no force is applied, thus meeting the need for continuous driving force. The pressing member 430 engages with the drive assembly 431, which is fixedly connected to the two pneumatic wheels 42. When the pressing member 430 is subjected to pressure from the tire and the road surface, it moves into the drive chamber 40, thereby driving the drive assembly 431 to rotate, which in turn drives the two pneumatic wheels 42 to rotate. This is used to control the airflow within the tire cavity.

[0040] The drive assembly 431 includes two bushings 4310 and a gear 4311. The gear 4311 meshes with the pressing member 430, and its rotation direction is affected by the direction of the pressing member 430. The two bushings 4310 are fixedly connected to both sides of the gear 4311 and rotatably connected to the drive chamber 40. The bushings 4310 rotate independently under the drive of the pressing member 430.

[0041] The ratchet assembly 432 includes a ratchet 4320, a ratchet tooth 4321, and a second spring 4322. The ratchet assembly 432 is typically made of stainless steel, which has high hardness and mechanical strength, giving it a longer service life. The second spring 4322 is fixedly connected at both ends to the ratchet tooth 4321 and the bushing 4310, respectively. The ratchet tooth 4321 engages with the ratchet 4320, and the ratchet 4320 is fixedly connected to the pneumatic wheel 42. When the pressing member 430 moves into the drive chamber 40, the rotation of the bushing 4310 causes the ratchet tooth 4321 to engage with the ratchet 4320, thus driving the ratchet 4320 to rotate. Conversely, when the pressing member 430 rebounds, the rotation of the bushing 4310 is opposite to the rotation of the ratchet 4320, causing the ratchet tooth 4321 to disengage from the ratchet 4320, allowing the ratchet 4320 to continue rotating in its original direction. This is to ensure that the air turbine 42 always rotates in the same direction.

[0042] A tire with passive cooling also includes two bead wires 5, located at both ends of the tire carcass 1 and fixedly connected to it. The bead wires 5 are an important component of the tire structure, primarily used to enhance the tire's strength and durability. The bead wires 5 are typically made of high-strength steel wire, approximately 1.6 mm in diameter, with a dozen or so such wires bundled together to form a wire loop about the thickness of an adult's little finger. This wire is usually plated with brass or tin to ensure good adhesion to the rubber. The bead wires 5 not only reinforce the tire carcass but also enhance the load-bearing capacity of the tire crown through the crisscrossing of multiple layers of wire bundles, ensuring tire safety and lifespan.

[0043] In summary, combining Figures 1-9The working principle of a tire with passive heat dissipation function is as follows: When the tire is working, as it rotates, vibrations are generated when the tire contacts the road surface. These vibrations are transmitted through the tread to the tire body 1. At this time, the buffer plate 30 of the buffer layer 3 deforms when the tire body 1 is compressed. Due to the presence of the shape suppression ring 31, the sine and cosine waveform structure of the shape suppression ring 31 buffers the transmitted vibrations, thereby reducing the noise generated by the vibration. Simultaneously, due to the deformation and compression of the tire body, the pressing element 430 in the drive unit 43 moves into the drive chamber 40, thereby driving the bushing 4310 to rotate. The rotation direction of the bushing 4310 causes the ratchet 4321 to mesh with the ratchet wheel 4320, thereby driving the ratchet wheel 4320 to rotate. This further drives the two air wheels 42 to rotate, thus controlling the airflow within the tire body cavity. When the pressing member 430 returns to its initial state and position under no force, the rotation direction of the bushing 4310 is opposite to that of the ratchet 4320, causing the ratchet 4321 to disengage from the ratchet 4320, thus allowing the ratchet 4320 to continue rotating in its original direction. This ensures that the air wheel 42 always rotates in the same direction. Ultimately, this changes the air in the cavity inside the tire body 1 from a static state to a flowing state. The flowing air carries away the heat generated inside the tire, thereby cooling the tire. Ultimately, this ensures that as long as the tire rotates, the passive cooling device 4 can always maintain its working state and continuously dissipate heat from the tire.

[0044] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tire with passive heat dissipation function, characterized in that, include: The tire body (1), tire body ply (2), buffer layer (3) and multiple passive heat dissipation devices (4); the tire body ply (2) is fixedly connected to the tire body (1), the buffer layer (3) is located between the tire body (1) and the tire body ply (2), and multiple passive heat dissipation devices (4) are disposed inside the tire body (1) and fixedly connected to the tire body (1); The buffer layer (3) includes a buffer plate (30) and a plurality of shape-inhibiting rings (31). The buffer plate (30) is fixedly connected to the tire carcass (1), and the plurality of shape-inhibiting rings (31) are located between the buffer plate (30) and the tire carcass ply layer (2). The buffer plate (30) has a wavy cross section and is made of flexible material. The passive heat dissipation device (4) includes a drive chamber (40), two air flow chambers (41), two air turbines (42), and a drive unit (43). The two air flow chambers (41) are fixedly connected to both sides of the drive chamber (40). The two air turbines (42) are respectively placed in the two air flow chambers (41) and rotatably connected to the drive chamber (40). The drive unit (43) is fixedly connected to the two air turbines (42). The drive unit (43) includes a pressing member (430), a drive assembly (431), two ratchet assemblies (432), and a spring (433). The two ratchet assemblies (432) are disposed on both sides of the drive assembly (431) and are detachably connected to the drive assembly (431). The two ends of the spring (433) are fixedly connected to the pressing member (430) and the drive chamber (40) respectively. The pressing member (430) meshes with the drive assembly (431), and the drive assembly (431) is fixedly connected to the two pneumatic wheels (42). The drive assembly (431) includes two rotating bushings (4310) and a gear (4311). The two bushings (4310) are fixedly connected to both sides of the gear (4311) and rotatably connected to the drive housing (40). The ratchet assembly (432) includes a ratchet (4320), a ratchet tooth (4321), and a second spring (4322). The two ends of the second spring (4322) are fixedly connected to the ratchet tooth (4321) and the bushing (4310) respectively. The ratchet tooth (4321) meshes with the ratchet (4320), and the ratchet (4320) is fixedly connected to the pneumatic wheel (42).

2. A tire with passive heat dissipation function according to claim 1, characterized in that, The shape-suppressing ring (31) is closed in the circumferential direction of the tire and is fixedly connected to the tire carcass ply (2).

3. A tire with passive heat dissipation function according to claim 1, characterized in that, It also includes two toe wires (5), which are located at both ends of the tire body (1) and are fixedly connected to the tire body (1).

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