Tire groove bottom mute cavity structure

Abstract

The utility model discloses a silence cavity structure at the groove bottom of a tire, which is arranged at an included angle between the bottom of a tread pattern groove and the side wall of the pattern groove and is distributed at intervals along the bottom of the groove. The cross section of the silence cavity is in a combined shape of a trapezoid and a convex shape, and the silence effect can be better achieved while the structural strength is guaranteed through the shape. The silence cavity is internally provided with an approximately cylindrical cavity, and the inner wall of the cylindrical cavity is provided with a sawtooth-shaped taper angle, so that the silence effect is further enhanced, and meanwhile, the drainage performance of the tire is not influenced. According to the utility model, the noise can be obviously reduced, meanwhile, obvious negative effects on the road holding force and the drainage performance of the tire are avoided, and the safe and stable running of the tire under various road conditions is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tire technology field especially relates to a tire groove bottom silence cavity structure. BACKGROUND

[0002] With the rapid development of automobile industry, people's requirement for automobile driving comfort is higher and higher. The noise generated by tire in the driving process is one of the important factors influencing the interior noise level and driving comfort. The pattern groove of the traditional tire is easy to generate large noise due to air being extruded and flowing in the process of contacting with the ground and draining. Some existing silence technologies such as optimizing the pattern block shape, adding sound-absorbing materials, etc. have certain effect, but there is still room for improvement. SUMMARY

[0003] The utility model discloses a tire groove bottom silence cavity structure, effectively reduces the noise in the driving process of tire, improves the comfort of vehicle driving, and does not affect the basic performance of tire such as the adhesion, drainage performance, etc.

[0004] The utility model discloses a tire groove bottom silence cavity structure, effectively reduces the noise in the driving process of tire, improves the comfort of vehicle driving, and does not affect the basic performance of tire such as the adhesion, drainage performance, etc.

[0005] The utility model provides a tire groove bottom silence cavity structure is set in the angle department of the bottom of tire pattern groove and pattern groove side wall.

[0006] As the preferred embodiment of the utility model, the cross section shape of the silence cavity is the combined shape of trapezoid and "convex", which can ensure the structural strength and better realize the silence effect.

[0007] As the preferred embodiment of the utility model, the depth of the silence cavity is 3mm, the bottom width of the trapezoidal block is 4mm, the bottom width of the "convex" block is 5mm, the top width of the trapezoidal block and the "convex" block is 2mm, the length changes according to the width of the tire groove, the length of the trapezoidal block accounts for 1 / 4 of the groove width, and the length of the convex block accounts for 1 / 3 of the groove width. The specific size is designed and optimized according to the specification and use scene of the tire.

[0008] As the preferred embodiment of the utility model, the approximately cylindrical cavity is arranged in the silence cavity, and the sawtooth-shaped taper angle is arranged on the inner wall of the cylindrical cavity, which further enhances the silence effect and does not affect the drainage performance of the tire.

[0009] As the preferred embodiment of the utility model, the silence cavity is arranged on the main groove of the tire, and is uniformly distributed along the circumference of the tire.

[0010] The utility model has the advantages of:

[0011] (1)Significant noise reduction: by the unique mute cavity structure design, the air flow characteristics in the tire pattern groove are changed, the noise generated by air extrusion and flow is effectively reduced, the tire noise analysis spectrum amplitude can be reduced from 2.92 to 1.103, the reduction amplitude is 62.2%, and the tire noise decibel value can be reduced by 1-2 decibels.

[0012] (2) Performance balance: while achieving the mute effect, due to the reasonable layout and shape design of the mute cavity, the grip and drainage performance of the tire will not be obviously negatively affected, and the safe and stable driving of the tire on various road conditions is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The structure combination of the utility model is shown in the figure;

[0014] Figure 2 The mute cavity of the utility model is shown in the figure Figure 1 ;

[0015] Figure 3 The mute cavity of the utility model is shown in the figure Figure 2 ;

[0016] Figure 4 The mute cavity of the utility model is shown in the figure Figure 1 ;

[0017] Figure 2 The mute cavity of the utility model is shown in the figure Figure 6 ;

[0018] Figure 7 The mute cavity of the utility model is shown in the figure

[0019] Figures 1-7 The mute cavity of the utility model is shown in the figure DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the utility model.

[0022] It should be noted that similar reference numbers and letters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0023] In the description of the utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0024] In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] The specific embodiments of the utility model will be described in detail below in combination with the drawings.

[0027] As shown in the accompanying Figure 1 , the embodiment provides a tire groove bottom silent cavity structure, which is arranged at the included angle between the bottom of the tire pattern groove and the pattern groove side wall. As shown in the accompanying Figures 2-5 and 6 , the silent cavity is a cavity structure with a specific shape, which is discontinuously distributed along the groove bottom. As shown in the accompanying Figure 6As shown, the cross-sectional shape of the mute cavity is a combination of trapezoidal and "convex" shape, which can better achieve the mute effect while ensuring the structural strength. The depth of the mute cavity is 3mm, the bottom width of the trapezoidal block is 4mm, the bottom width of the "convex" block is 5mm, the top width of the trapezoidal and "convex" blocks is 2mm, and the length varies according to the width of the tire groove. The length of the trapezoidal block accounts for 1 / 4 of the groove width, and the length of the convex block accounts for 1 / 3 of the groove width. The specific size is designed and optimized according to the size and use scene of the tire. Inside the mute cavity, an approximately cylindrical cavity is provided, and a sawtooth-shaped taper is provided on the inner wall of the cylindrical cavity, which further enhances the mute effect while not affecting the drainage performance of the tire. As shown in the accompanying Figure 7 As shown, the mute cavity is arranged on the main groove of the tire, and is uniformly distributed around the circumference of the tire.

[0028] In the tire manufacturing process, when designing and processing the tire pattern mold, according to the size of the tire and the expected mute effect, the position, shape, size and other parameters of the mute cavity at the bottom of the pattern groove are determined. The mold part with the mute cavity shape is processed according to the design requirements. In the tire vulcanization forming process, the tire structure with the mute cavity is formed. After strict quality detection, the tire with the tire groove bottom mute cavity of the present application can be put into market use. In the tire use process, the mute cavity continuously plays its noise reduction role, and improves the comfort and quietness of vehicle driving. As shown in the accompanying ​ As shown, through the unique mute cavity structure design, the flow characteristics of the air in the tire pattern groove are changed, effectively reducing the noise generated by the extrusion and flow of air, and the tire noise analysis spectrum amplitude can be reduced from 2.92 to 1.103, with a decrease of 62.2%, and the tire noise decibel value can be reduced by 1-2 decibels.

[0029] Although the present application has been described with reference to the explanatory embodiments thereof, the above-described embodiments are merely the preferred embodiments of the present application, and the implementation of the present application is not limited by the above-described embodiments. It should be understood that those skilled in the art can design many other modifications and embodiments, which will fall within the scope and spirit of the present application.

Claims

1. A tire sipe cavity structure, characterized by: The mute cavity is arranged at the angle between the bottom of the tire groove and the sidewall of the groove, and is discontinuously distributed along the groove bottom, and the cross section shape of the mute cavity is the shape of the combination of trapezoid and "convex".

2. A tire sipe cavity structure according to claim 1, wherein: The depth of the mute cavity is 3mm, the bottom width of the trapezoidal block is 4mm, the bottom width of the "convex" block is 5mm, the top width of the trapezoidal block and the "convex" block is 2mm, the length of the trapezoidal block accounts for 1 / 4 of the groove width, and the length of the convex block accounts for 1 / 3 of the groove width.

3. A tire sipe cavity structure according to claim 2, wherein: The mute cavity is internally provided with a nearly cylindrical cavity, and the inner wall of the cylindrical cavity is provided with a sawtooth-shaped taper angle.

4. A tire sipe cavity structure according to claim 1, wherein: The mute cavity is arranged on the main groove of the tire, and is uniformly distributed in the tire circumference.

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