Tire pattern groove structure

Abstract

The utility model discloses a tread pattern groove structure. The tread pattern groove structure comprises a pattern groove with a curved structure, the groove wall angle from the groove top to the groove bottom of each pattern groove is a variable angle; the depth of each pattern groove ranges from 10 mm to 32 mm, and the width of each pattern groove ranges from 5 mm to 20 mm; the groove wall angle of the top position of the pattern groove is 2-5 degrees, and the groove wall angle of the 1 / 4 position of the depth of the pattern groove is 3-7 degrees; the groove wall angle of the 1 / 2 position of the depth of each pattern groove is 4-10 degrees; the groove wall angle at the three-quarter position of the depth of each pattern groove is 7-17 degrees; and the groove wall angle of the groove bottom position of the pattern groove is 48-90 degrees. If the angle of the groove bottom is smaller than or equal to 85 degrees, arc treatment is conducted on the groove bottom, due to the fact that the variable angle design is adopted in the pattern groove shape, stones are not prone to being clamped in the tire using process, and due to the fact that the stress of the pattern groove is prone to being dispersed, the defect of tire bottom cracking is not prone to being caused.

Description

Technical Field

[0001] The utility model belongs to the technical field of tire tread grooves, and in particular relates to a tire tread groove structure. Background Art

[0002] Tires are ground-contact rolling devices installed on various vehicles such as cars. In order to increase the cushioning force of the tire during rolling, the tire is mostly made of rubber material. In order to increase the friction between the tire and the ground and avoid the defect of low vehicle driving stability caused by the tire slipping on the ground during rotation, in the prior art, grooves are often formed on the tire to increase the friction between the tire and the ground through the grooves.

[0003] The shape of the tread groove is one of the key factors affecting tire performance and service life. Specifically, the existing tread groove design of load-carrying tires mostly has a single-angle groove wall. However, the disadvantages of this single-angle groove design are very obvious, which are reflected in:

[0004] 1. During use, debris such as stones that damage the tire are easily stuck in the tread grooves. Specifically, the moving tire touches the stones on the ground, causing the stones to get stuck in the tread grooves and damage the tire;

[0005] 2. Secondly, the stress of the tread groove with a single-angle design tends to concentrate at the bottom of the groove, causing cracks at the bottom of the tire. Utility Model Content

[0006] Based on the above background, the purpose of the utility model is to provide a tire tread groove structure.

[0007] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0008] A tire tread groove structure, comprising a tread groove of a curved structure; the groove wall angle from the groove top to the groove bottom of the tread groove is a variable angle;

[0009] The depth of the groove is 10-32 mm, and the width of the groove is 5-20 mm;

[0010] The groove wall angle at the groove top is 2°-5°, and the groove wall angle at a quarter of the groove depth is 3°-7°;

[0011] The groove wall angle at the position where the groove depth is half is 4°-10°;

[0012] The groove wall angle at the three-quarter position of the groove depth is 7°-17°;

[0013] The groove wall angle at the groove bottom is 48°-90°.

[0014] Preferably, the depth of the groove is 12.5 mm, and the width of the groove is 8 mm;

[0015] The groove wall angle at the groove top position is 5°, and the groove wall angle at a quarter of the groove depth is 6°;

[0016] The groove wall angle at the position where the groove depth is half is 8°;

[0017] The groove wall angle at the three-quarter position of the groove depth is 16°;

[0018] The groove wall angle at the groove bottom is 77°.

[0019] Preferably, the depth of the groove is 16 mm, and the width of the groove is 12 mm;

[0020] The groove wall angle at the groove top position is 2°, and the groove wall angle at a quarter of the groove depth is 5°;

[0021] The groove wall angle at the position where the groove depth is half is 7°;

[0022] The groove wall angle at the three-quarter position of the groove depth is 14°;

[0023] The groove wall angle at the groove bottom is 86°.

[0024] Preferably, the depth of the groove is 10 mm, and the width of the groove is 5 mm;

[0025] The groove wall angle at the groove top position is 5°, and the groove wall angle at a quarter of the groove depth is 7°;

[0026] The groove wall angle at the position where the groove depth is half is 10°;

[0027] The groove wall angle at the three-quarter position of the groove depth is 17°;

[0028] The groove wall angle at the groove bottom is 48°.

[0029] Preferably, the depth of the groove is 32 mm, and the width of the groove is 20 mm;

[0030] The groove wall angle at the groove top position is 2°, and the groove wall angle at a quarter of the groove depth is 3°;

[0031] The groove wall angle at the position where the groove depth is half is 4°;

[0032] The groove wall angle at the three-quarter position of the groove depth is 7°;

[0033] The groove wall angle at the groove bottom is 90°.

[0034] Preferably, the groove bottom of the groove is an inverted arc.

[0035] Preferably, the groove bottom of the groove has no rounded arc.

[0036] The utility model has the following beneficial effects:

[0037] 1. The shape of the tire groove disclosed by the utility model adopts a groove wall angle change design, thereby solving the technical defect that the groove is easy to clamp stones, and secondly, solving the technical defect that the stress is concentrated at the groove bottom of the groove, causing the tire to crack. Not only is it not easy to get stuck with stones during use, but also the stress of the groove is easy to disperse, so it is not easy to cause the defect of the tire cracking.

[0038] 2. The function equation is used to guide the processing of tire tread grooves of different sizes. This is reflected in the function equation guiding the opening of the mold, which facilitates the processing of tire tread grooves of various specifications and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0040] Figure 1 This is a schematic diagram of the structure of the groove in Example 2 of the utility model;

[0041] Figure 2 This is a schematic diagram of the structure of the groove in Example 3 of the utility model;

[0042] Figure 3 This is a schematic diagram of the structure of the groove in Example 4 of the utility model;

[0043] Figure 4 This is a schematic diagram of the structure of the groove in Example 5 of the utility model;

[0044] Figure 5 This is one of the structural schematic diagrams of the pattern groove in Example 6 of the utility model;

[0045] Figure 6 This is the second schematic diagram of the groove structure in Example 6 of the utility model.

[0046] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0050] Example 1

[0051] like Figure 1-4 As shown, a tire groove structure comprises a groove 1 of a curved structure; the angle from the groove wall to the groove bottom of the groove 1 is a variable angle; specifically, the depth of the groove 1 is 10-32 mm, and the width of the groove 1 is 5-20 mm; the groove wall angle at the groove top position of the groove 1 is 2°-5°, and the groove wall angle at a quarter of the groove depth of the groove 1 is 5°-6°; the groove wall angle at a half of the groove depth of the groove 1 is 7°-8°; the groove wall angle at a three-quarter position of the groove depth of the groove 1 is 14°-16°; the groove wall angle at the groove bottom position of the groove 1 is 77°-86°.

[0052] Example 2

[0053] like Figure 1 As shown, this embodiment discloses a groove 1 with a specific structural shape. The details are as follows:

[0054] The depth of the groove 1 is 12.5 mm, the width of the groove 1 is 8 mm; the groove wall angle at the top of the groove 1 is 5°, the groove wall angle at a quarter of the groove depth of the groove 1 is 6°; the groove wall angle at a half of the groove depth of the groove 1 is 8°; the groove wall angle at a three-quarter of the groove depth of the groove 1 is 16°; the groove wall angle at the bottom of the groove 1 is 77°. The groove bottom of the groove 1 has an inverted arc.

[0055] Example 3

[0056] like Figure 2 As shown, this embodiment discloses another specific structural shape of the groove 1. Specifically, the groove depth is 16 mm, the groove width is 12 mm, the groove wall angle at the groove top is 2°, the groove wall angle at a quarter of the groove depth is 5°, the groove wall angle at a half of the groove depth is 7°, the groove wall angle at a three-quarter of the groove depth is 14°, the groove wall angle at the groove bottom is 86°, and the groove bottom of the groove 1 does not have an inverted arc.

[0057] Example 4

[0058] like Figure 3 As shown, this embodiment discloses another specific structural shape of the groove 1. Specifically, the groove depth is 10 mm, the groove width is 5 mm, the groove wall angle at the groove top is 5°, the groove wall angle at a quarter of the groove depth is 7°, the groove wall angle at a half of the groove depth is 10°, the groove wall angle at a three-quarter of the groove depth is 17°, the groove wall angle at the groove bottom is 48°, and the groove bottom of the groove 1 has an inverted arc.

[0059] Example 5

[0060] like Figure 4 As shown, this embodiment discloses another specific structural shape of the groove 1. The details are as follows:

[0061] The depth of the groove is 32 mm, and the width of the groove is 20 mm; the groove wall angle at the top of the groove is 2°, and the groove wall angle at one-quarter of the groove depth is 3°; the groove wall angle at one-half of the groove depth is 4°; the groove wall angle at three-quarters of the groove depth is 7°; the groove wall angle at the bottom of the groove is 90°, and the bottom of groove 1 does not have a rounded arc.

[0062] Example 6

[0063] like Figure 5-6As shown, this embodiment discloses the functional relationship between the shape, size and groove wall angle of the groove 1 in the form of a functional equation, which is as follows:

[0064] The groove wall angle of groove 1 is calculated by the following formula:

[0065] 1. The depth of groove 1 is d, the width of groove 1 is w, the groove width is the horizontal coordinate, the groove depth is the vertical coordinate, the center of the bottom of groove 1 is the origin (0,0), the coordinates of the groove bank point are (w / 2,d), and the groove width horizontal coordinate is 0 to w / 2, every 0.1 or 0.2 (the smaller the interval is 0.1 or 0.2, the smoother the fitting curve is), the groove depth vertical coordinate is calculated as follows:

[0066]

[0067] According to the above formula, the vertical coordinate y from the horizontal coordinate 0 to w / 2 is calculated. The line connecting the points (0, y(0)) to (w / 2, y(w / 2)) is half of the pattern groove 1.

[0068] The groove wall angle of this application is variable, and the angle at point (w / 2, d) is:

[0069]

[0070] The angle at the point (0,0) is:

[0071]

[0072] like Figure 1 As shown, when the groove width w = 8 and the groove depth d = 12.5, the groove wall angle at (4, 12.5) is 5°, and the groove wall angle at (0, 0) is about 77°. a1 = 5°, a2 = 77°, and the left and right angles a2 at the groove bottom (0, 0) are the same in size but opposite in direction and cannot be differentiated.

[0073] The calculated curve has different left and right derivatives at (0,0). For this, Figure 2 As shown in the figure, when α(0,0)≤85°, the groove bottom needs to be rounded. After the rounding, the derivative at the groove bottom (0,0) is 0 and the groove bottom angle is 90°.

[0074] The angle at each point on the trench wall can be obtained from the following formula

[0075]

[0076] In the above, a represents the groove wall angle, W represents the groove wall width, and d represents the groove depth of the groove 1 .

[0077] The above function equation is used to guide the opening of the mold when processing the groove 1 of the size.

[0078] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A tire tread groove structure, characterized in that: A groove having a curved structure; the groove wall angle from the groove top to the groove bottom of the groove is a variable angle; The depth of the groove is 10-32 mm, and the width of the groove is 5-20 mm; The groove wall angle at the groove top is 2°-5°, and the groove wall angle at a quarter of the groove depth is 3°-7°; The groove wall angle at the position where the groove depth is half is 4°-10°; The groove wall angle at the three-quarter position of the groove depth is 7°-17°; The groove wall angle at the groove bottom is 48°-90°.

2. The tire groove structure according to claim 1, characterized in that: The depth of the groove is 12.5 mm, and the width of the groove is 8 mm; The groove wall angle at the groove top position is 5°, and the groove wall angle at a quarter of the groove depth is 6°; The groove wall angle at the position where the groove depth is half is 8°; The groove wall angle at the three-quarter position of the groove depth is 16°; The groove wall angle at the groove bottom is 77°.

3. The tire groove structure according to claim 1, characterized in that: The depth of the groove is 16 mm, and the width of the groove is 12 mm; The groove wall angle at the groove top position is 2°, and the groove wall angle at a quarter of the groove depth is 5°; The groove wall angle at the position where the groove depth is half is 7°; The groove wall angle at the three-quarter position of the groove depth is 14°; The groove wall angle at the groove bottom is 86°.

4. The tire groove structure according to claim 1, characterized in that: The depth of the groove is 10 mm, and the width of the groove is 5 mm; The groove wall angle at the groove top position is 5°, and the groove wall angle at a quarter of the groove depth is 7°; The groove wall angle at the position where the groove depth is half is 10°; The groove wall angle at the three-quarter position of the groove depth is 17°; The groove wall angle at the groove bottom is 48°.

5. The tire groove structure according to claim 1, characterized in that: The depth of the groove is 32 mm, and the width of the groove is 20 mm; The groove wall angle at the groove top position is 2°, and the groove wall angle at a quarter of the groove depth is 3°; The groove wall angle at the position where the groove depth is half is 4°; The groove wall angle at the three-quarter position of the groove depth is 7°; The groove wall angle at the groove bottom is 90°.

6. The tire tread groove structure according to any one of claims 2 and 4, characterized in that: The groove bottom of the pattern groove is an inverted arc.

7. The tire tread groove structure according to any one of claims 3 and 5, characterized in that: The groove bottom of the groove has no rounded arc.

Images