New energy automobile tire
The tire design addresses inefficient heat dissipation in new energy vehicles by integrating a reinforcement and insulation layer with vents and cushioning, achieving improved heat management, structural integrity, and puncture resistance.
Patent Information
- Application Number
- CN202422305978.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The insufficient heat dissipation performance of existing new energy vehicle tires leads to excessive tire temperature, affecting service life and safety, and the existing heat dissipation hole design can easily lead to a decrease in tire strength.
A reinforced insulation layer and multiple heat dissipation holes are provided in the tire, combined with the cavity structure, the reinforced insulation layer and the heat dissipation holes at the shoulder work together to improve the heat dissipation performance, and the overall strength and stab resistance of the tire are improved through the buffer layer.
On the premise of ensuring tire strength, it significantly improves heat dissipation performance, reduces tire temperature, extends service life, enhances stabbing and shock absorption effects, and improves driving safety.
Smart Images
Figure CN223100383U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tires, in particular to a tire for new energy vehicles. Background Art
[0002] With the increasing use of new energy vehicles, consumers have put forward higher requirements for the performance of new energy vehicles. As the only component of the vehicle in contact with the ground, the tire plays a role in bearing the vehicle load, transmitting the driving force and braking force to the road surface, absorbing the vibration from the road surface, changing and maintaining the driving direction of the vehicle, etc. At the same time, it has a crucial impact on the controllability and safety of the vehicle. The performance of the tire directly affects the performance of the vehicle.
[0003] The tire tread is directly in contact with the ground. During vehicle driving, especially at high speeds, the tire temperature rises. Relying only on the self-cooling of the tread, the heat dissipation rate is low. Excessive temperature inside the tire is likely to exacerbate tire wear and even cause a blowout, shortening the service life and affecting the driving safety of the vehicle. Therefore, improving the heat dissipation of the tire is the focus of research in the field of tire manufacturing technology.
[0004] In the existing tire heat dissipation technology, the heat dissipation performance is mainly increased by adding heat dissipation holes on the tire sidewall. Although the presence of the heat dissipation holes can play a certain role in heat dissipation, unreasonable design of the heat dissipation holes is likely to cause stress concentration and a decrease in strength, thus accelerating the scrapping of the tire. Moreover, a single heat dissipation method cannot meet the heat dissipation requirements at higher temperatures. Therefore, it is necessary to improve the tire. Content of the Utility Model
[0005] In order to solve the above problems, the utility model provides a tire for new energy vehicles. By adding a reinforcing and heat-insulating layer and setting a plurality of cooperating heat dissipation holes, the heat dissipation performance of the tire can be improved on the premise of ensuring the strength of the tire, and the puncture resistance of the tire can be improved, so that the tire will not leak air or deflate quickly after being punctured by foreign objects, increasing the driving safety.
[0006] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0007] The utility model provides a tire for new energy vehicles, including: tread, bead, sidewall, shoulder, airtight layer. A ply is arranged on the airtight layer, a reinforcing layer is arranged on the ply, a belt layer is arranged on the reinforcing layer, a reinforcing and heat-insulating layer is arranged on the belt layer, and a chafer is arranged on the reinforcing and heat-insulating layer;
[0008] A number of first heat dissipation holes are arranged on the tread, and the heat dissipation holes extend radially from the tread to the reinforcing and heat-insulating layer.
[0009] Further, the reinforcing and heat-insulating layer includes a reinforcing layer and a heat-insulating layer.
[0010] Furthermore, a plurality of protruding portions are spaced apart from each other in a portion of the reinforcing layer close to the heat insulation layer, and a plurality of recessed portions are spaced apart from each other in a portion of the heat insulation layer close to the buffer layer, and the recessed portions match the protruding portions of the reinforcing layer, and a cavity structure is formed between the recessed portions and the reinforcing layer.
[0011] Preferably, the relationship between the height H1 of the protruding portion of the reinforcing layer and the thickness Hg of the heat insulation layer satisfies: 0.15 ≤ H1 / Hg ≤ 0.35; the relationship between the height H2 of the recessed portion and the thickness Hg of the heat insulation layer satisfies: 0.25 ≤ H2 / Hg ≤ 0.5.
[0012] Furthermore, the material of the reinforcing layer is a rubber fiber composite material, and the fiber is carbon fiber or glass fiber; the material of the heat insulation layer is an aluminum film.
[0013] Further, the material of the crown ply is nylon fiber; the material of the belt layer is aramid fiber; the material of the reinforcing layer is high-strength steel wire; the material of the carcass ply is steel wire.
[0014] Further, a row of second heat dissipation holes are arranged at intervals in the circumferential direction of the tire on the shoulder of the tire, and the second heat dissipation holes extend from the surface of the shoulder into the reinforcing and heat insulating layer and penetrate through the reinforcing layer to communicate with the cavity, so as to increase heat dissipation. Arranging heat dissipation holes at the shoulder can further increase heat dissipation.
[0015] Further, the new energy vehicle tire further includes a bead.
[0016] Further, a buffer layer is provided on the outside of the shoulder and the sidewall of the tire, and the buffer layer extends from the shoulder to the outside of the bead and the thickness gradually decreases.
[0017] Furthermore, the material of the buffer layer is glass fiber.
[0018] Compared with the prior art, the present utility model has the following beneficial effects:
[0019] 1. For the new energy vehicle tire provided by the present utility model, through the arrangement of the reinforcing and heat insulating layer and the heat dissipation holes, the heat dissipation performance can be improved on the premise of ensuring that the strength does not decrease, and the puncture resistance can be effectively improved.
[0020] 2. For the new energy vehicle tire provided by the present utility model, by arranging the heat insulation layer, it can block the heat from transferring towards the inside of the tire body, stabilize the temperature of the tire body, reduce the heat fatigue caused by too high tire temperature, slow down the aging of the tire body, extend the tire life, and at the same time avoid the rim deformation caused by high temperature.
[0021] 3. The new energy vehicle tire provided by the present utility model can timely discharge the heat generated by the friction of the tread by arranging heat dissipation holes on the tread; the heat that is not discharged in time enters the interior of the tire. When passing through the reinforcing and heat-insulating layer, it will stay in the cavity between the heat-insulating layer and the buffer layer. The heat dissipation holes are connected to the cavity, which can discharge the heat, increase heat dissipation, and the cavity structure can also play a buffering role to improve the anti-impact performance and achieve the purpose of shock absorption; heat dissipation holes are arranged at the tire shoulders to further increase heat dissipation.
[0022] 4. The new energy vehicle tire provided by the present utility model can greatly improve the heat dissipation performance, reduce the tire temperature, extend the service life, and has the effect of shock absorption through the mutual cooperation of the reinforcing and heat-insulating layer and the heat dissipation holes at the tread and tire shoulders.
[0023] 5. The new energy vehicle tire provided by the present utility model can improve the overall strength of the tire and avoid the problem of tire degradation caused by the arrangement of heat dissipation holes by arranging buffer layers at the tire shoulders and the tire sides. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 is a schematic structural diagram of the new energy vehicle tire involved in the embodiment of the present application;
[0025] Figure 2 is a schematic cross-sectional structural diagram of the new energy vehicle tire involved in the embodiment of the present application;
[0026] Figure 3 is a schematic structural diagram of the reinforcing and heat-insulating layer involved in the embodiment of the present application.
[0027] In the figures, 1 - tread, 2 - tire shoulder, 3 - tire side, 4 - cap ply, 5 - reinforcing and heat-insulating layer, 51 - reinforcing layer, 511 - protruding part, 52 - heat-insulating layer, 522 - recessed part, 6 - belt layer, 7 - reinforcing layer, 8 - ply, 9 - inner liner, 10 - tread groove, 11 - first heat dissipation hole, 12 - second heat dissipation hole, 13 - bead, 14 - buffer layer. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] In order to more clearly explain the overall concept of the present utility model, the following will be described in detail by way of examples in conjunction with the drawings in the specification.
[0029] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.
[0030] In addition, in the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0031] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0032] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0033] As shown in the attached Figures 1 - 3 drawings, a new energy vehicle tire provided by the present utility model includes: a tread 1, a tire shoulder 2, a tire side 3, a crown ply 4, a reinforcing and heat-insulating layer 5, a belt layer 6, a reinforcing layer 7, a carcass ply 8, and an airtight layer 9; a carcass ply 8 is provided on the airtight layer 9, a reinforcing layer 7 is provided on the carcass ply 8, a belt layer 6 is provided on the reinforcing layer 7, a reinforcing and heat-insulating layer 5 is provided on the belt layer 6, and a crown ply 4 is provided on the reinforcing and heat-insulating layer 5;
[0034] Among them, a plurality of first heat dissipation holes 11 are provided in the tread grooves 10 of the tread 1, and the heat dissipation holes 11 extend from the tread 1 in the radial direction to the reinforcing and heat-insulating layer 5. When heat is generated by the friction of the tread, the heat will be discharged through the opened heat dissipation holes, and the remaining heat enters the interior of the tire. When passing through the reinforcing and heat-insulating layer, the heat-insulating layer blocks the further entry of heat into the interior of the tire, thereby reducing the heat of the tire.
[0035] As an implementation manner, the reinforcement heat insulation layer 5 includes a reinforcement layer 51 and a heat insulation layer 52.
[0036] As an implementation manner, in the part of the reinforcement layer 51 close to the heat insulation layer 52, a plurality of protruding parts 511 are arranged at intervals, and in the part of the heat insulation layer 52 close to the reinforcement layer 51, a plurality of recessed parts 522 are arranged at intervals, and the recessed parts 522 match the protruding parts 511, and a cavity structure is formed between the recessed parts 522 and the reinforcement layer 51.
[0037] As an implementation manner, the relationship between the height H1 of the protruding part 511 and the thickness Hg of the heat insulation layer satisfies: 0.15 ≤ H1 / Hg ≤ 0.35; the relationship between the height H2 of the recessed part and the thickness Hg of the heat insulation layer satisfies: 0.25 ≤ H2 / Hg ≤ 0.5. By setting the height of the protruding part to be less than the height of the recessed part and defining the relationship with the thickness of the heat insulation layer, a cavity of a certain size can be formed to achieve the purpose of buffering and shock absorption, improve the puncture resistance, and avoid the thickness of the heat insulation layer being too small to achieve the purpose of two heat insulation and cooling. When the generated heat enters the tire interior and passes through the reinforcement heat insulation layer, it will stay in the cavity between the heat insulation layer and the buffer layer. The heat dissipation holes are communicated with the cavity, so that the heat can be discharged, increasing heat dissipation. The cavity structure can also play a buffering role, improve the impact resistance, and achieve the purpose of shock absorption.
[0038] As an implementation manner, the material of the reinforcement layer 51 is a rubber fiber composite material, and the fiber is carbon fiber or glass fiber; the material of the heat insulation layer 52 is an aluminum film.
[0039] By setting the heat insulation layer, it can block the heat from transferring towards the interior of the carcass, stabilize the carcass temperature, reduce the heat fatigue caused by the too high tire temperature, slow down the aging of the carcass, extend the tire life, and avoid the rim deformation caused by high temperature at the same time.
[0040] As an implementation manner, the material of the crown belt layer 4 is nylon fiber; the material of the belt layer 5 is aramid fiber; the material of the reinforcement layer 7 is high-strength steel wire; the material of the ply 8 is steel wire.
[0041] As an implementation manner, a row of second heat dissipation holes 12 are arranged at intervals along the circumferential direction of the tire on the shoulder 2. The second heat dissipation holes 12 extend from the shoulder surface towards the inside to the reinforcement heat insulation layer 5 and penetrate through the reinforcement layer 51 to communicate with the cavity, increasing heat dissipation. By arranging heat dissipation holes at the shoulder, when the tire is stressed, the hot air in the cavity will be extruded and discharged through the second heat dissipation holes, which can further increase heat dissipation.
[0042] As an implementation manner, the new energy vehicle also includes a bead 13.
[0043] As an implementation manner, a buffer layer 14 is provided on the outer sides of the shoulder 2 and the sidewall 3. The buffer layer 14 extends from the shoulder 2 to the outside of the bead 13, and the thickness gradually decreases.
[0044] As an implementation manner, the buffer layer 14 is made of fiberglass.
[0045] Through the mutual cooperation of the reinforcing and heat-insulating layer and the heat dissipation holes at the tread and the shoulder, the heat dissipation performance can be greatly improved, the tire temperature can be reduced, the service life can be extended, and the puncture resistance and shock absorption effects can be achieved, thereby increasing the comfort.
[0046] The above are only the embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.
Claims
1. A new energy vehicle tire, comprising: Tread, shoulder, sidewall, airtight layer; characterized in that a ply layer is provided on the airtight layer, a reinforcing layer is provided on the ply layer, a belt layer is provided on the reinforcing layer, a reinforcing and heat-insulating layer is provided on the belt layer, and a chafer is provided on the reinforcing and heat-insulating layer; A number of first heat dissipation holes are provided in the tread pattern grooves, and the heat dissipation holes extend radially from the tread to the reinforcing and heat-insulating layer.
2. The new energy vehicle tire according to claim 1, wherein, The reinforcing and heat-insulating layer includes a reinforcing layer and a heat-insulating layer.
3. The new energy vehicle tire according to claim 2, characterized in that, A plurality of protruding portions are spaced apart in a part of the reinforcing layer close to the heat-insulating layer, and a plurality of recessed portions are spaced apart in a part of the heat-insulating layer close to the buffer layer, and the recessed portions match the protruding portions of the reinforcing layer, and a cavity structure is formed between the recessed portions and the reinforcing layer.
4. The new energy vehicle tire according to claim 3, wherein, The relationship between the height H1 of the protruding portion of the reinforcing layer and the thickness Hg of the heat-insulating layer satisfies: 0.15 ≤ H1 / Hg ≤ 0.35; the relationship between the height H2 of the recessed portion and the thickness Hg of the heat-insulating layer satisfies: 0.25 ≤ H2 / Hg ≤ 0.
5.
5. The new energy vehicle tire according to claim 2, wherein, The material of the reinforcing layer is a rubber fiber composite material, and the fiber is carbon fiber or glass fiber; the material of the heat-insulating layer is an aluminum film.
6. A new energy vehicle tire according to claim 3, characterized in that, A row of second heat dissipation holes are arranged at intervals along the circumferential direction of the tire on the shoulder, and the second heat dissipation holes extend inward from the shoulder surface to the reinforcing and heat-insulating layer.
7. An electric vehicle tire according to claim 6, characterized in that, The second heat dissipation holes penetrate through the reinforcing layer and communicate with the cavity to increase heat dissipation.
8. A new energy vehicle tire according to claim 1, characterized in that, It also includes a bead.
9. The new energy vehicle tire according to claim 8, characterized in that, A buffer layer is provided on the outer sides of the shoulder and the sidewall, the buffer layer extends from the shoulder to the outer side of the bead, and the thickness gradually decreases.
10. A new energy vehicle tire according to claim 9, characterized in that, The material of the buffer layer is glass fiber.