Low-temperature-resistant and wet-skid-resistant tread rubber for new energy automobile and tire of low-temperature-resistant and wet-skid-resistant tread rubber
Through the tread rubber with a multi-layer structure and anti-skid stud design, combined with specific materials and structural optimization, the problems of insufficient grip and anti-skid performance of tires on low temperatures and icy and snowy roads are solved, achieving low-temperature resistance and anti-skid effects.
Patent Information
- Application Number
- CN202422680183.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-04
AI Technical Summary
It is difficult to improve the anti-skid performance of the existing technology while ensuring the low-temperature resistance of the tire. Especially under low-temperature and icy and snowy road conditions, the anti-skid ability of the existing tires is insufficient.
The tread rubber design adopts a multi-layer structure, including a tread layer, a support layer and a buffer layer. It combines the anti-skid studs with the support layer, uses chloroprene rubber and thermoplastic elastomer materials, and embeds the anti-skid studs into the support layer to improve compatibility. Rubber bumps and anti-skid studs are set in the tread layer to enhance the grip performance.
This enables the tire to maintain good grip performance under low temperature conditions, while improving its anti-skid ability and avoiding the problem of poor rubber compatibility caused by excessive mechanical strength of the support layer.
Smart Images
Figure CN223443218U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to rubber composite material technical field, specifically speaking, relate to a kind of low temperature resistant and anti-slip tread for new energy vehicle and its tire. BACKGROUND
[0002] In the region of perennial low temperature and ice and snow weather, winter tire is getting more and more attention of automobile user. Winter tire is mainly used in low temperature and ice and snow road, which requires the hardness of tire tread rubber to be lower than ordinary tire in low temperature, and has excellent ice and snow ground gripping performance to improve the maneuverability of tire and ensure driving safety.
[0003] In prior art, cis-polybutadiene rubber is usually added in natural rubber, and the glass transition temperature Tg of cis-polybutadiene rubber is-100℃, which is the most optimal synthetic rubber for cold resistance, can reduce the hardening degree of tread rubber in low temperature, and improve the contact area between tire tread and ground, but the anti-slip ability of cis-polybutadiene rubber is poor, which cannot guarantee the low temperature resistance and anti-slip performance of tire at the same time. SUMMARY
[0004] In order to solve the above problems, a kind of low temperature resistant and anti-slip tread for new energy vehicle and its tire are provided, the tread rubber of the tire is obtained by laminating tread layer, support layer and buffer layer through vulcanization, which meets the low temperature resistance of tire, in addition, the anti-slip performance of tire can be met by setting anti-skid nail cooperating with tread layer and support layer, and the compatibility between rubber materials can be avoided due to the too high mechanical strength of support layer by setting buffer layer.
[0005] The utility model provides a kind of low temperature resistant and anti-slip tread for new energy vehicle, and the low temperature resistant and anti-slip tread for new energy vehicle includes tread layer, support layer and buffer layer, tread layer is located in the upper layer of support layer, and buffer layer is located in the lower layer of support layer;A plurality of rubber bosses are set on the tread layer, and anti-skid nails are arranged in the groove between rubber bosses.
[0006] The anti-skid nail includes a cap, a body and a head connected in sequence, a fixing member is provided on the body, a plurality of steel spikes are provided on the cap, the body is embedded in the support layer through the fixing member, the cap is embedded in the support layer through the steel spikes, the head penetrates out of the tread layer, and the height of the part of the head penetrating out of the tread layer is less than the height of the rubber boss.
[0007] Optionally, the tread layer is a chloroprene rubber layer, the support layer is a thermoplastic elastomer layer, and the thermoplastic elastomer is one or more of styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene copolymer (SIS) and hydrogenated styrene-butadiene block copolymer (SEBS).
[0008] The buffer layer is a natural rubber layer.
[0009] Optionally, the fixing member is a plurality of anti-skid protrusions arranged on the surface of the shank body at intervals, and the anti-skid protrusions can be trapezoidal, quadrangular or triangular in shape.
[0010] Optionally, the surface of the shank body is provided with anti-skid lines in V shape, chevron shape, diamond shape, inclined shape, parallel shape or cross shape.
[0011] Optionally, the length of the shank body is less than the thickness of the support layer.
[0012] Optionally, the top cap is square, and the edges and corners of the top cap are arc-shaped or chamfered.
[0013] Optionally, the cross section of the rubber block is triangular, rectangular or Z-shaped.
[0014] Optionally, the thickness of the tread layer is 7-9mm.
[0015] Optionally, the thickness of the support layer is 10-15mm.
[0016] Optionally, the thickness of the buffer layer is 4-7mm.
[0017] The utility model discloses another aspect provides a kind of tire, and the tire includes above-mentioned new energy automobile is used low temperature and anti-wet skid tread rubber. Further, tire also includes structure such as cord layer and bead, and the utility model discloses tire can be new energy automobile is used low temperature and anti-wet skid tread rubber by injection molding, then it is formed by vulcanization form. However, the specific forming mode of the utility model discloses tire is not limited to this, and the person skilled in the art can be formed according to actual situation.
[0018] Compared with the prior art, the utility model at least obtains following beneficial effect one:
[0019] (1) The utility model provides a kind of low temperature resistant and wet skid resistant tread rubber for new energy vehicle and its tire, the tread rubber of this tire is obtained by vulcanization layering through tread layer, support layer and buffer layer, meet the low temperature resistant performance of tire, in addition, by setting anti-skid nail and tread layer and support layer cooperate, it can meet the wet skid resistant performance of tire, the setting of buffer layer can avoid the poor compatibility between rubber due to the excessive mechanical strength of support layer.
[0020] (2)The utility model discloses when the shank of anti-skid nail is embedded in support layer, support layer can play the role of bearing, improve the compatibility of anti-skid nail and support layer. DRAWINGS
[0021] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model.In the drawings:
[0022] Figure 1 An exemplary embodiment of the low temperature resistant and wet skid resistant tread rubber structure for new energy vehicle of the utility model is shown;
[0023] Figure 2 Another exemplary embodiment of the low temperature resistant and wet skid resistant tread rubber structure for new energy vehicle of the utility model is shown.
[0024] Explanation of reference signs:
[0025] 1-tread layer;2-support layer;3-buffer layer;4-rubber bump;5-anti-skid nail;51-top cap;52-shank;53-nail head;54-fixing piece. DETAILED DESCRIPTION
[0026] In order to more clearly explain the overall concept of the utility model, the following detailed description is made in an exemplary manner with reference to the drawings.
[0027] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.
[0028] In addition, in the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0029] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection, also can be communication;It can be direct connection, also can be indirectly connected through intermediate medium, can be the communication or the interaction of two elements of two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.
[0030] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly contacted through an intermediate medium. In the description of the specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0031] In one example embodiment of the present application, referring to Figure 1 As shown in the figure, the low-temperature-resistant and wet-slip-resistant tread rubber for new energy vehicles comprises a tread layer 1, a support layer 2 and a buffer layer 3, the tread layer 1 is located on the upper layer of the support layer 2, and the buffer layer 3 is located on the lower layer of the support layer 2; a plurality of rubber bumps 4 are arranged on the tread layer 1, the cross section of the rubber bump 4 is rectangular, and a plurality of anti-skid nails 5 are arranged in the grooves between the rubber bumps 4. The anti-skid nail comprises a nail cap 51, a nail body 52 and a nail head 53 connected in sequence, a fixing member 54 is arranged on the nail body 52, the fixing member 4 is a plurality of anti-skid protrusions arranged on the surface of the nail body at intervals, and the shape of the anti-skid protrusion is quadrilateral.
[0032] A plurality of steel spikes (not shown in the figure) are arranged on the nail cap 51, the nail body is embedded in the support layer through the fixing member, the nail body and the fixing member are an integral whole, the surface of the nail body is provided with anti-skid lines (not shown in the figure), the nail cap is embedded in the support layer through the steel spikes, the nail head penetrates out of the tread layer, and the height of the part of the nail head penetrating out of the tread layer is less than the height of the rubber bump.
[0033] The thickness of the tread layer is 7mm, the thickness of the support layer is 10mm, and the thickness of the buffer layer is 4mm. The tread layer is a chloroprene rubber layer, the support layer is a styrene-butadiene-styrene block copolymer layer, and the buffer layer is a natural rubber layer.
[0034] Example 2
[0035] Reference Figure 2 As shown in the figure, the low-temperature-resistant and wet-slip-resistant tread rubber for new energy vehicles comprises a tread layer 1, a support layer 2 and a buffer layer 3, the tread layer 1 is located on the upper layer of the support layer 2, and the buffer layer 3 is located on the lower layer of the support layer 2; a plurality of rubber blocks 4 are arranged on the tread layer 1, the cross section of the rubber block 4 is rectangular, and a plurality of anti-skid nails 5 are arranged in the grooves between the rubber blocks 4. The anti-skid nail comprises a nail cap 51, a nail body 52 and a nail head 53 connected in sequence, a fixing member 54 is arranged on the nail body 52, the fixing member 4 is a plurality of anti-skid protrusions arranged on the surface of the nail body at a certain interval, and the shape of the anti-skid protrusion is trapezoidal.
[0036] A plurality of steel spikes (not shown in the figure) are arranged on the nail cap 51, the nail body is embedded in the support layer through the fixing member, the nail body and the fixing member are an integral whole, the surface of the nail body is provided with anti-skid lines (not shown in the figure), the nail cap is embedded in the support layer through the steel spikes, the nail head penetrates out of the tread layer, and the height of the part of the nail head penetrating out of the tread layer is less than the height of the rubber block.
[0037] The thickness of the tread layer is 9mm, the thickness of the support layer is 15mm, and the thickness of the buffer layer is 7mm. Among them, the tread layer is a chloroprene rubber layer, the support layer is a styrene-isoprene-styrene copolymer layer, and the buffer layer is a natural rubber layer.
[0038] Comparative Example 1
[0039] Based on Example 1, the main difference is that the anti-skid nails are not embedded.
[0040] Comparative Example 2
[0041] Based on Example 1, the main difference is that the support layer is not arranged.
[0042] Comparative Example 3
[0043] Based on Example 1, the main difference is that the buffer layer is not arranged.
[0044] The tread rubber prepared by the examples and comparative examples is subjected to tire molding and vulcanization process to produce a tread sample, and the performance test is carried out, and the results are shown in Table 1.
[0045] Table 1
[0046]
[0047] As shown in Table 2, the tire prepared in the present application has an elastic modulus E' of not higher than 15 at-25℃, a tanδ0℃ in the range of 0.60-0.70, a tanδ60℃ of not higher than 0.4, and has good low-temperature resistance and wet-slip resistance.
[0048] The above merely describes the embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of claims of the present application.
Claims
1. A low-temperature-resistant and anti-wet-skid tread rubber for new energy vehicles, characterized in that: The low-temperature-resistant and wet-skid-resistant tread rubber for new energy vehicles comprises a tread layer, a support layer, and a buffer layer, wherein the tread layer is located on the upper layer of the support layer, and the buffer layer is located on the lower layer of the support layer; the tread layer is provided with a plurality of rubber bumps, and anti-slip studs are provided in the grooves between the rubber bumps; The anti-slip spike includes a spike cap, a spike body and a spike head connected in sequence. A fixing piece is provided on the spike body and a plurality of steel spikes are provided on the top cap. The spike body is embedded in the supporting layer through the fixing piece and the top cap is embedded in the supporting layer through the steel spikes. The top head passes through the tread layer, and the height of the part of the top head passing through the tread layer is less than the height of the rubber bump.
2. The low-temperature-resistant and wet-skid-resistant tread rubber for new energy vehicles according to claim 1, characterized in that: The fixing members are a plurality of anti-skid protrusions provided on the surface of the nail body, and the shape of the anti-skid protrusions can be trapezoidal, quadrilateral or triangular.
3. The low-temperature-resistant and wet-skid-resistant tread rubber for new energy vehicles according to claim 1, characterized in that: The surface of the nail body is provided with anti-skid patterns, which are in V-shape, herringbone shape, diamond shape, inclined shape, parallel shape or well shape.
4. The low-temperature-resistant and wet-skid-resistant tread rubber for new energy vehicles according to claim 1, characterized in that: The length of the nail body is less than the thickness of the supporting layer.
5. The low-temperature-resistant and wet-skid-resistant tread rubber for new energy vehicles according to claim 1, characterized in that: The top cap is square, and the corners of the top cap are rounded or chamfered.
6. The low-temperature-resistant and wet-skid-resistant tread rubber for new energy vehicles according to claim 1, characterized in that: The cross section of the rubber bump is triangular, rectangular or Z-shaped.
7. The low-temperature-resistant and wet-skid-resistant tread rubber for new energy vehicles according to claim 1, characterized in that: The tread layer thickness is 7-9mm.
8. The low-temperature-resistant and wet-skid-resistant tread rubber for new energy vehicles according to claim 1, characterized in that: The thickness of the support layer is 10-15 mm.
9. The low-temperature-resistant and wet-skid-resistant tread rubber for new energy vehicles according to claim 1, characterized in that: The thickness of the buffer layer is 4-7mm.
10. A tire, characterized in that: The tire comprises the low-temperature-resistant and wet-skid-resistant tread rubber for new energy vehicles according to any one of claims 1 to 9.