TWI568604B - Torsional tire saddle with biaxial rotation - Google Patents

Description

Twisted tire sipe structure with two-axis rotation

The invention relates to the structure of a tire block, in particular to a blade formed in a vulcanizing mold, thereby improving the rigidity of the block, reducing the deformation, and improving the braking performance and handling performance of the tire.

The structure of the tire is mainly composed of a tread and a bead edge extending from a predetermined height on both sides thereof, and a bead lip extending from the free end, and the three synchronous ring extensions together form a hollow annular body; The outer diameter of the rim is used as a buffer between the ground and the rim.

There are a plurality of treads distributed on the tread in a preset arrangement and a preset shape, which comprise a block formed by interlacing larger and deeper grooves, and a smaller and shallower fine groove, usually such a thin The groove is placed on the block. Generally speaking, the setting of the fine groove on the tire is mainly when the tire is in contact with the ground, the deformation of the block is caused by the deformation of the block, and the edge effect is enhanced to strengthen the road surface to make the tire more gripper. Improve the handling of driving to reduce the tire slip.

Since the tread is deformed when the tread contacts the ground during running, the shape and structure of the fine groove of the sipe are related to the stress and rigidity in response to the situation, thereby affecting the grip and handling of the tire during driving, especially It is a road condition that runs on slippery, stagnant water or snow. This condition is more demanding on the condition of the fine groove on the tire.

In the tire sipe formation, usually in the tire vulcanization process, a plurality of sipe blades are arranged in the mold, and the overall shape of the tire is completed after the vulcanization process, and the finished product is taken out by the mold, and the sipe blades are separated from the tread one by one. Each of the sipe is on. Therefore, in addition to the shape of the sipe to conform to the aforementioned grip and handling requirements, the shape of the sipe blade also needs to consider whether the demolding is smooth and whether the sipe is broken or detached.

A conventional tire sipe structure, such as the technique disclosed in U.S. Patent No. 7,516,767, is mainly characterized in that the sipe of the tread is serrated at the top of the sawtooth. Point Q1 begins to be displaced longitudinally and the direction of displacement is turned at least once such that vertex Q1 is first displaced in one direction and then displaced in the other direction, thereby drawing at least one extending from the top of the serration to the particular depth The turning point, and the line drawn by the vertex Q2 is linear, and the vertex Q2 is smaller than the zigzag line drawn by the vertex Q1.

In the prior art, a conventional tire sipe structure, such as the one disclosed in U.S. Patent No. 4,794, 965, has a slit having a width of 0.1 to 2 mm and a line parallel to the axial direction of 30°. There is a strip (31) between the two adjacent slits, and the width (l ₁ ') is at least 30% of the width (l ₁ ) of the block, and the slits are distributed in a double number with the same depth at an angle (θc) A range of more than 0 degrees and less than 40 degrees is formed with a top curve slit.

There is also a sipe structure of a conventional tire, such as the patented technology disclosed in U.S. Patent No. 7,024,281, which has one or more full-circle ribs on the tread portion, the width of which is about the width of the tire. 10~25%, and one or more V-shaped sipes with full circumference ring extending from the center to both sides and having the same direction and spacing.

In the above-mentioned conventional structure, the sipe structure of the sipe on the block is exposed, and the shape of the fine groove structure of each sipe is further studied. The fine groove of the sipe of the first case forms a jagged shape on the surface of the block. On the side of the block, there is a straight line. The Q1 and Q2 parts on the side of the inner sipe are longitudinally curved or ridgelined; the second case is formed on the surface of the block to form a linear sipe fine line on the side of the block. The fold line is presented; in the third case, the fine groove of the sipe is a V-shaped fold line on the tread, and is linear on the side of the block.

In general, the degree of deformation of the sipe fine lines on the ground may vary depending on the shape of the sipe. Because of its different rigidity, it has different stresses and strains. The shape of the preferably rigid sipe is mostly a three-dimensional complex structure, and it is not easy to demold in the process; the most common linear shape and the shape of the fold line are analyzed and compared, please refer to the twenty-second figure, which is a linear sipe. The pattern is most easily demolded in the process. However, in the case of creep deformation during running, the sipe fine lines (Y) are easy to produce sliding on the opposite sides of the sipe, causing the tread to contact the ground area (X). Uneven, concentrated in a certain part, prone to wear failure; please refer to the twenty-third figure, is the line-shaped sipe fine lines (Z), which is more rigid than straight, but in the tire When the finished product is removed from the mold, the interference force of the uneven wall of the sipe fine line (Z) is Large, easy to cut the finished product, resulting in high defect rate of finished products. In addition, the conventional sawtooth sipe is easy to be formed on the ridge line portion of the top portion, and a large stress concentration portion is generated. This stress concentration portion is likely to cause cracks during running, and the crack is generated quickly. The longer the crack, the more the block begins to fall.

Therefore, in order to solve the problem that the mold is not easy to demold and the defect rate, and at the same time, the inventor can achieve a better rigidity requirement, and provide a sipe structure of the tire, which is subjected to a twist shape change based on the longitudinal axis and the horizontal axis of the tire block. The two side walls of the sipe are formed with a corresponding structure with a spacing and a wave shape, so as to reduce the degree of deformation of the tire block, so as to achieve a squeezing structure with easy demoulding and better rigidity, and can improve the driving and handling of driving. And the gripper.

In view of the above, the twisted tire sipe structure with biaxial rotation disclosed in the present invention is disposed on one of the tire blocks, and the height direction of the predetermined portion in the middle portion of the block is set as a vertical axis, and The longitudinal axis is a vertical horizontal axis, comprising: a groove bottom; a first sipe wall, a first torsion surface adjacent to a surface of the block, and adjacent to the groove bottom and opposite to the first torsion surface Cooperating with one of the second torsion surfaces, the first torsion surface is formed with a torsion-like curved surface along the horizontal axis direction of the two sides of the longitudinal axis, and is respectively formed on both sides of the vertical axis. a concave twist surface and an upper convex twist surface, wherein the first twist surface forms a first tread ridge line adjacent to a surface of the block, and the second twist surface is respectively along the two sides of the longitudinal axis The transverse axis direction forms a twisted curved surface, and has a convex twisted surface and a concave concave twisted surface on both sides of the vertical axis, and the lower convex twisted surface is engaged with the upper concave twisted surface, and the concave concave twisted surface is The upper convex twist surface is engaged, and the second twist surface forms a first groove bottom ridge line adjacent to the groove bottom; a sipe wall formed by a third torsion surface adjacent to a surface of the block and a fourth torsion surface adjacent to the groove bottom and engaging the third torsion surface, the third torsion surface being the longitudinal axis Forming a torsion-like curved surface along the transverse axis direction of the two sides of the reference line, and respectively forming an upper concave twist surface and an upper convex twist surface on the two sides of the vertical axis, the third twist surface being on the surface of the tire block A second tread ridge line is formed at the adjacent portion, and the fourth torsion surface is formed with a twisted curved surface along the horizontal axis direction of the two sides of the longitudinal axis, and a convex twist is formed on both sides of the vertical axis. And a concave twisted surface, and the lower convex twisting surface is engaged with the upper concave twisting surface, the lower concave twisting surface is engaged with the upper convex twisting surface, and the fourth torsional surface forms a first portion adjacent to the bottom of the groove Two groove bottom ridge lines, each of the first and second sipe walls are cut on the surface, side surface and any longitudinal direction of the block The cross-sections are all wavy in different degrees; by the above-mentioned members, the torsional wall surfaces of the first and second sipe walls are mutually preset at a predetermined distance based on the longitudinal axis of the block and the biaxial axis of the transverse axis. The wave change in the parallel state is continuously set on the block with a preset length or length change, which can reduce the sidewall stress, and the contact area between the tread and the ground is relatively flat, so that the force is relatively average, thereby reducing local wear. The situation occurs, and the side wall of the sipe is completely free of ridge lines, so it is easier to demould to improve the yield rate, and the utility of the sipe structure.

The main object of the present invention is to provide a twisted tire sipe structure with two-axis rotation, which is carried out on the tire block from top to bottom and from left to right on the basis of the longitudinal axis and the horizontal axis of the block. The wavy change of the right causes a twisted surface on both walls of the sipe to effectively reduce the stress and make the force more even.

A second object of the present invention is to provide a twisted tire sipe structure with biaxial rotation, which has two side wall surface structures twisted by two axes, and is formed on the surface, the side surface and any longitudinal cutting surface of the tire block. The wave shape of different degrees can make the block have better rigidity, and the area that can be in contact with the ground is relatively flat, so that the average wear resistance can reduce the local wear.

A further object of the present invention is to provide a twisted tire sipe structure with two-axis rotation, which is formed by a two-axis twisted wave-shaped two side wall surface of a tire block, which is completely ridgeless and is taken out after the vulcanization process. Not only is it easier to demould when working, but it also reduces the damage on the wall surface of the sipe to improve the yield. At the same time, due to the small interference of the sipe, it is not easy to break when demoulding, reducing the number of mold changes and mold repairs, thus greatly improving the mold production efficiency.

[this invention]

(10) ‧‧ ‧ bottom

(20)‧‧‧First sipe wall

(21)‧‧‧First torsion surface

(211)‧‧‧Front twisted surface

(212)‧‧‧Upper convex twisted surface

(213)‧‧‧First tread ridgeline

(22)‧‧‧Second twisting surface

(221)‧‧‧Under the convex twisted surface

(222)‧‧‧Under the twisted surface

(223)‧‧‧First groove bottom ridgeline

(30)‧‧‧Second sipe wall

(31) ‧‧‧ Third twist surface

(311)‧‧‧Upper convex twisted surface

(312)‧‧‧Front twisted surface

(313)‧‧‧Second tread ridge

(32) ‧‧‧Four torsion

(321)‧‧‧Under the twisted surface

(322)‧‧‧Under the convex twisted surface

(323)‧‧‧Second trough bottom ridge

(50) ‧ ‧ blocks

(51)‧‧‧ vertical axis

(52)‧‧‧ horizontal axis

(X)‧‧‧Traditional tread

(Y)‧‧‧Study linear sipe

(Z) ‧ ‧ 知 折 折 刀

The first figure is a partial perspective view of a preferred embodiment of the present invention.

The second figure is a partial perspective cross-sectional view of a block of a preferred embodiment of the present invention.

The third figure is a schematic longitudinal sectional view of a tire block according to a preferred embodiment of the present invention.

The fourth figure is a schematic longitudinal sectional view of a tire block according to a preferred embodiment of the present invention.

Figure 5 is a partial perspective cutaway view of a block of a preferred embodiment of the present invention.

Figure 6 is a schematic view showing the surface of a block of a preferred embodiment of the present invention.

Figure 7 is a cross-sectional view showing the transverse axis of the block of the preferred embodiment of the present invention.

Figure 8 is a schematic cross-sectional view of a tire block in accordance with a preferred embodiment of the present invention.

Figure 9 is a schematic view showing the lateral sectioning torsion change of a side wall according to a preferred embodiment of the present invention.

Figure 11 is a side elevational view of a block of a preferred embodiment of the present invention.

Figure 11 is a schematic cross-sectional view of a longitudinal axis of a tire block in accordance with a preferred embodiment of the present invention.

Figure 12 is a schematic longitudinal sectional view of a block of a preferred embodiment of the present invention.

Figure 13 is a schematic view showing the longitudinal section cut torsion variation of a side wall according to a preferred embodiment of the present invention.

Figure 14 is a schematic view showing the driving state of a preferred embodiment of the present invention.

A fifteenth view is a schematic view of a demolded state of a preferred embodiment of the present invention.

Figure 16 is a partial perspective cross-sectional view showing a block of another embodiment of the present invention.

Figure 17 is a schematic view showing the transverse section torsion change of the side wall of another embodiment of the present invention.

Figure 18 is a schematic view showing the longitudinal section cut torsion variation of a side wall according to another embodiment of the present invention.

Figure 19 is a partial perspective cross-sectional view showing a block of a further embodiment of the present invention.

Fig. 20 is a schematic view showing the transverse section torsion change of the side wall according to still another embodiment of the present invention.

A twenty-first drawing is a schematic view showing a longitudinal section torsion change of a side wall according to still another embodiment of the present invention.

The twenty-second figure is a schematic diagram of the driving state of the conventional structure.

The twenty-third figure is a schematic view of the demold state of the conventional structure.

First, please refer to the first to the thirteenth drawings. The twisted tire sipe structure with biaxial rotation provided by the present invention is described as an embodiment in which the surface of the tire block has a curved sipe fine line. In one of the tire blocks (50), the height direction of the predetermined portion in the middle portion of the tire block (50) is a vertical axis (51) and a horizontal axis (52) perpendicular to the longitudinal axis. The utility model comprises: a groove bottom (10), and a first sipe wall (20) and a second sipe wall (30) respectively extending on one side of the groove bottom (10).

The groove bottom (10) is disposed at a predetermined depth from the surface of the block (50) substantially along the longitudinal axis (51), and is disposed substantially along the horizontal axis (52) by a predetermined length.

The first sipe wall (20) is adjacent to a first torsion surface (21) of the surface of the block (50), and is adjacent to the groove bottom (10) and is coupled to the first torsion surface (21). a second torsion surface (22) is formed; the first torsion surface (21) is formed with a torsion-like curved surface along the longitudinal axis (52) of the two sides thereof with the longitudinal axis (51) as a reference line, and An upper concave twisted surface (211) and an upper convex twisted surface (212) are respectively formed on two sides of the longitudinal axis (51); the first twisted surface (21) forms a surface adjacent to the surface of the block (50). a first tread ridge line (213); the second torsion surface (22) is formed with a twisted curved surface along the longitudinal axis (52) of the two sides of the longitudinal axis (51) as a reference line, and The two sides of the shaft (51) respectively have a convex twisted surface (221) and a lower concave twisted surface (222), and the lower convex twisted surface (221) is engaged with the upper concave twisted surface (211), the concave The twisted surface (222) is engaged with the upper convex twist surface (212); the second twist surface (22) forms a first groove bottom ridge line (223) adjacent to the groove bottom (10); each of the first tires a surface ridge line (213) and a first groove bottom ridge line (223) are mirror-symmetrical to each other with respect to the horizontal axis (52); each of the first treads The ridge line (213) and the first groove bottom ridge line (223) are mirror-symmetrical to each other with respect to the vertical axis (51).

The second sipe wall (30) is adjacent to a third torsion surface (31) of the surface of the block (50), and is adjacent to the groove bottom (10) and is coupled to the third torsion surface (31). a fourth torsion surface (32) is formed; the third torsion surface (31) is formed with a torsion-like curved surface along the longitudinal axis (52) of the two sides thereof with the longitudinal axis (51) as a reference line, and An upper convex twist surface (311) and an upper concave twist surface (312) are respectively formed on two sides of the longitudinal axis; the third twist surface (31) forms a second tire adjacent to the surface of the block (50). a ridge line (313); the fourth torsion surface (32) is formed with a twisted curved surface along the longitudinal axis (52) of the two sides of the longitudinal axis (51) as a reference line, and the longitudinal axis (51) The two sides have a concave twisted surface (321) and a lower convex twisted surface (322), respectively, and the lower concave twisted surface (321) is engaged with the upper convex twisted surface (311), and the lower convex twisted surface (322) And engaging with the upper concave twist surface (312); the fourth twist surface (32) forms a second groove bottom ridge line (323) adjacent to the groove bottom (10); each of the second tread ridge lines ( 313) and the second groove bottom ridge line (323) are mirror-symmetrical to each other with the horizontal axis (52) as a reference; each of the second tread edges (313) and a second bottom ridge lines (323) to the longitudinal axis (51) with reference to each other as a mirror symmetrical state.

By means of the above-mentioned members, the twisting of the first and second sipe walls (20) (30) is based on the two axes of the longitudinal axis (51) and the horizontal axis (52) of the block (50). The wall surfaces are mutually changed by a wave having a predetermined distance in a parallel state, and are continuously disposed on the block (50) with a preset length or length change, thereby reducing the first and second slot walls (20) ( 30) the stress on the wall surface, and the area where the tread is in contact with the ground is relatively flat, so that the force is relatively average, thereby reducing the local wear, and the first and second sipe walls (20) (30) The side wall is completely free of ridge lines, so It is easy to demould to improve the yield and has a practical sipe structure.

For a further understanding of the structural features, technical means, and desired effects of the present invention, the manner of use of the present invention is described as follows: the shapes of the first and second sipe walls (20) (30) of the present invention, According to the preset spacing and the two corresponding parallel states, the vertical axis (51) and the horizontal axis (52) are used as reference axes, and the torsional change of the predetermined length is continuously performed, so that the positions of the cut surfaces are different. At the same time, different degrees of wavy wall changes are produced. First, the first sipe wall (20) is described, wherein the first torsion surface (21) is based on the longitudinal axis (51), and the upper concave torsion surface (211) having the opposite twist direction is generated. The upper torsion surface (212); the second torsion surface (22) also uses the longitudinal axis (51) as a reference axis to generate the lower concave torsion surface (222) and the lower convex torsion surface (221) At the same time, the second torsion surface (22) is opposite to the first torsion surface (21) with the horizontal axis (52) as a reference axis, so that the upper concave surface (211) and the lower convex surface are presented. The twisted surface (221) is longitudinally engaged, and the upper convex twisted surface (212) is coupled to the twisted wave state of the concave concave surface (321). Similarly, the second sipe wall (30) is also a twisted wavy wall surface shape similar to the first sipe wall (20), and each of the first and second sipe walls has a predetermined spacing. And continuously extending in the direction of the horizontal axis by a predetermined length.

For the lateral torsion of the first and second sipe walls (20) (30), the wall surface torsion changes, please refer to the sixth figure, which is the surface state of the block (50), which is a curved wave. The first and second sipe walls (20) (30) respectively form the first and second tread ridge lines (213) (313) on the surface of the block (50). Please refer to the seventh figure, which is a transverse section of the central position of the horizontal axis (52). The first and second sipe walls (20) of the portion are along the horizontal axis (52). Parallel straight, the wave curvature approaches zero; please refer to the eighth figure, which is the transverse section of the groove bottom (10) position, and the first and second sipe walls (20) (30) at this position The wavy shape is opposite to the surface texture of the block (50) of the seventh figure, and the first and second sipe walls (20) (30) respectively form the first and the first at the groove bottom (10). Second child ridgeline (223) (323). Referring to the ninth figure, the cutting position of the sixth to eighth figures is combined, and it can be seen that the first and second sipe walls (20) (30) are surfaced by the block (50). To the longitudinal variation between the bottoms (10), the wall surfaces of the first and second sipe walls (20) (30) are respectively concave and convex by the surface of the block (50), and are twisted. When the change to the cutting position of the horizontal axis (52) is a parallel straight line, and then continue to twist and change to the bottom of the groove (10), the wall surfaces of the first and second sipe walls (20) (30) are respectively Showing a convex and concave, at this time with the tire The surface tread of the block (50) is in the opposite state of the mutual mirror.

For the longitudinal change of the first and second sipe wall faces (20) (30), please refer to the tenth figure, which is the surface state of the left side of the block (50), which is a curved wave. The predetermined length is continuously extended, and the first and second sipe walls (20) (30) of the portion respectively form a undulating wave state on the surface of the block (50); please refer to FIG. a longitudinally sectioned surface of the central position of the shaft (51), wherein the first and second sipe walls (20) (30) of the portion are parallel to the longitudinal axis (51), and the undulating curvature approaches Zero; please refer to the twelfth figure, which is the longitudinal transverse section of the right side position of the block (50), the wavy shape and the tenth of each of the first and second sipe walls (20) at this position The tread position of the figure is cut in the opposite direction. Referring to the thirteenth drawing, the cutting position of the above-mentioned tenth to twelfth drawings is combined with the schematic view, and it can be seen that the first and second sipe walls (20) (30) face are covered by the block (50). The lateral change between the left side surface and the right side surface of the block (50), the wall surfaces of each of the first and second sipe walls (20) (30) are respectively concave by the left side surface of the block (50) The convex wave state, the torsion changes to a parallel straight line when the longitudinal axis (51) is cut, and then continues to twist and change to the right side position of the block (50), each of the first and second sipe walls ( 20) The wall surface of (30) is respectively convex and concave, and the tread pattern on the left side of the block (50) is opposite to each other.

According to the present invention, the two axes of the vertical axis (51) and the horizontal axis (52) of the predetermined position of the block (50) are used as reference axes, so that the first and second slot walls (20) (30) are simultaneously Performing a three-dimensional undulating change from the surface of the block (50) to the bottom of the groove (10), and from the left side to the right side, and making the first and second sipe walls (20) 30) The two wall faces respectively produce correspondingly parallel twist faces and extend continuously in a periodic manner. The structure of each of the first and second sipe walls (20) (30) formed by each of the first, second, third and fourth torsion faces (21) (22) (31) (32) The design is formed by a torsion curved surface, which can eliminate the problem that the edge of the sawtooth and the wall surface formed on the sipe wall are easy to generate cracks due to internal stress, so the invention has better stress tolerance and can effectively reduce the inferiority. The pattern occurs, which in turn prolongs the service life.

In the present invention, each of the longitudinal axis (51) and the horizontal axis (52) is used as a reference axis, and the first and second sipe walls are formed on the two sides of the block (50) by the two-axis synchronous torsion method. (20) The wall structure design of (30) has different wave shapes on the surface, the side surface and any longitudinal cut surface of the block (50); therefore, when the invention is in a running state, please refer to the fourteenth aspect. In the figure, when the ground surface is deformed, the area of the first and second sipe walls (20) (30) opposite to the rotating wall surface increases, and the wave The opposite concave and convex wall surface of the wave can provide a better pinching force, and the sliding of the two side wall surfaces can be avoided, so that the surface of the surface of the tire block contacting the ground is relatively flat, and the force receiving area is relatively average, so the present invention can make the tire block have a relatively flat area. The rigidity is excellent, and at the same time, the surface of the block can bear the friction on average, and the local wear can be reduced.

In the process of removing the finished product after the vulcanization process in the process, please refer to the fifteenth figure, wherein the first, second, third and fourth torsion faces are formed by the biaxial torsion of the block (50). (21) (22) (31) (32) on the wavy sides of each of the first and second sipe walls (20) (30), the wall surface of which is completely ridgeless, so that it is easier to demould, and It can reduce the damage of the wall surface of the sipe to improve the yield rate, and solve the problem that it is difficult to demould and easily cause defective products.

Referring to FIGS. 16 to 18, in another embodiment of the present invention, the surface of the block (50) is in the form of a line-shaped sipe fine line, wherein each of the first and second tires The surface ridge lines (213) (313) are in a line shape parallel to each other; the first and second groove bottom ridge lines (223) (323) are in a line shape parallel to each other; on the side of the block (50) It is in the shape of a wave.

For the lateral torsion of the first and second sipes walls (20), the wall surface torsion changes, please refer to the seventeenth figure, for the surface of the block (50), a and b cut and other three positions combined The schematic view shows that the wall surfaces of the first and second sipe walls (20) are longitudinally changed from the surface of the block (50) to the bottom of the groove (10), and the first and second knives are respectively The wall surface of the groove wall (20) (30) is in a parallel line state by the surface of the block (50), and the torsion changes to another inclination angle when the transverse axis (52) is cut at the position (a) and each of the 1. The second sipe walls (20) (30) are in parallel with each other in a parallel line state, and then continue to twist and change to the position of the groove bottom (b), each of the first and second sipe walls (20) (30) The wall surfaces are respectively inclined at an angle and each of the first and second sipe walls (20) (30) is parallel to each other, and the direction of the fold line and the surface tread line of the block (50) are at this time. The direction is opposite to the mirror.

For the longitudinal torsion of the first and second sipe walls (20) (30), the wall surface torsion changes, please refer to the eighteenth figure, the right side of the block (50), c and d cut, etc. The three positions are combined with the schematic diagram, and it can be seen that the wall surfaces of the first and second sipe walls (20) are laterally changed from the left side of the block (50) to the right side of the block (50). The wall surfaces of the first and second sipe walls (20) (30) are respectively formed into a concave and convex wave state by the left side surface of the block (50), and the torsion changes to the longitudinal axis (51) cutting position (c) When the time is a parallel straight line and then continues to twist and change to the right side position (d) of the block (50), the walls of each of the first and second sipe walls (20) (30) are respectively convex and concave. ,at this time The opposite side of the tread of the left side of the block (50) is mirrored.

The wall surfaces of the first and second sipes walls (20) (30) of the embodiment of the present invention are also respectively composed of the first, second, third and fourth torsion surfaces (21) (22). (31) (32) are formed together, and have a concave twist surface and a convex twist surface corresponding to each other, and extend continuously with a preset pitch and a preset length. Other manufacturing methods, state of use, and desired efficacy are all identical to the preferred embodiment described above.

Referring to FIG. 19 to FIG. 21, in another embodiment of the present invention, the first and second tires are in the form of linear sipe fine lines on the surface of the block (50). The surface ridge lines (213) (313) are linearly parallel to each other; the first and second groove bottom ridge lines (223) (323) are linearly parallel to each other; on the side of the block (50) It is in the shape of a wave.

For the lateral torsion of the first and second sipe walls (20) (30), the wall surface torsion changes, please refer to the twentieth figure, for the surface of the block (50), e and f cut, etc. The position of the first and second sipe walls (20) (30) is longitudinally changed from the surface of the block (50) to the bottom of the groove (10), each of which is first The wall surface of the second sipe wall (20) (30) is parallel to the surface of the block (50), and is inclined with the horizontal axis (52) at a predetermined angle; the twist changes to the horizontal axis ( 52) the cutting position (e) is parallel to the horizontal axis (52) and each of the first and second sipe walls (20) (30) is parallel to each other; and then the torsional change is continued to the bottom of the groove (10) In the position (f), the wall surfaces of the first and second sipe walls (20) (30) are inclined with respect to the horizontal axis (52) at a predetermined angle, and are parallel to each other. In the state, the oblique direction of the straight line of the portion (f) and the oblique direction of the surface tread of the block (50) are opposite to each other in the mirror.

For the longitudinal torsion of the first and second sipe walls (20) (30), the wall surface torsion changes, please refer to the eighteenth figure, the right side of the block (50), g and h cutting, etc. The three positions are combined with the schematic diagram, and it can be seen that the wall surface of each of the first and second sipe walls (20) (30) changes laterally from the left side of the block (50) to the right side of the block (50). The wall surfaces of the first and second sipe walls (20) (30) are respectively formed into a concave and convex wave state by the left side surface of the block (50), and the torsion changes to the longitudinal axis (51) cutting position. (g) is a parallel straight line, and then continues to twist to the right side position (h) of the block (50), the wall surfaces of the first and second sipe walls (20) (30) are respectively The convex portion is concave, and the portion (h) and the left side tread of the block (50) are mirrored in opposite waves.

The wall surfaces of the first and second sipes walls (20) of this embodiment are also respectively different Formed by the first, second, third and fourth torsion faces (21) (22) (31) (32), respectively, each having a concave twist surface and a convex twist surface corresponding to each other Continuous extension of spacing and preset length. Other manufacturing methods, state of use, and desired efficacy are all identical to the preferred embodiment described above.

In summary, the "twisted tire sipe structure with biaxial rotation" disclosed in the present invention provides a first and second sipe wall surface disposed on the block and on both sides of the groove bottom. The first axis, the second axis, and the fourth axis are formed on the vertical axis and the horizontal axis, and the first, second, third, and fourth twist faces are formed on the upper, lower, left, and right sides, respectively. The first and second sipe walls are at a predetermined spacing, and the horizontal axis continuously extends the predetermined length of the sipe structure design, thereby reducing the internal stress generation and strengthening the rigidity of the block to improve the handling during driving and Grab the ground, improve the service life, and at the same time facilitate the demoulding operation in the process, reduce the damage of each of the first and second sipe walls, and improve the yield of the finished product, thereby obtaining a practical tread groove The structure makes the whole industry practical and cost-effective, and its structure has not been seen in the publications or public use. It is in line with the requirements of the invention patent application, and please ask the bureau to express the patent and express the prayer as soon as possible.

It is to be understood that the above is a specific embodiment of the present invention and the technical principles applied thereto, and the functional effects produced by the concept of the present invention are still beyond the spirit of the specification and drawings. In the meantime, it should be combined with Chen Ming within the scope of the present invention.

(10) ‧‧ ‧ bottom

(20)‧‧‧First sipe wall

(21)‧‧‧First torsion surface

(211)‧‧‧Front twisted surface

(212)‧‧‧Upper convex twisted surface

(213)‧‧‧First tread ridgeline

(22)‧‧‧Second twisting surface

(221)‧‧‧Under the convex twisted surface

(222)‧‧‧Under the twisted surface

(223)‧‧‧First groove bottom ridgeline

(30)‧‧‧Second sipe wall

(31) ‧‧‧ Third twist surface

(313)‧‧‧Second tread ridge

(51)‧‧‧ vertical axis

(52)‧‧‧ horizontal axis

Claims (6)

A twisted tire sipe structure with two-axis rotation is disposed on one of the tire blocks, and the height direction of the predetermined portion of the middle portion of the block is set to a vertical axis and one of the vertical axes a horizontal axis, comprising: a groove bottom, a predetermined depth from the surface of the block along the longitudinal axis, and a predetermined length along the horizontal axis; a first sipe wall, close to a first torsion surface of the surface of the block, and a second torsion surface adjacent to the groove bottom and engaging with the first torsion surface, wherein the first torsion surface is respectively along the longitudinal axis The transverse axis direction of the two sides forms a twisted curved surface, and has an upper concave twist surface and an upper convex twist surface on both sides of the vertical axis, and the first twist surface forms a first position adjacent to the surface of the tire block. a tread ridge line, wherein the second torsion surface is formed with a twisted curved surface along the longitudinal axis direction of the two sides of the longitudinal axis, and a convex torsion surface and a concave concave surface are respectively formed on both sides of the longitudinal axis And engaging the lower convex twist surface with the upper concave twist surface, the lower concave twist surface and the upper convex twist surface Connecting, the second torsion surface forms a first groove bottom ridge line adjacent to the groove bottom; a second groove wall is adjacent to a third torsion surface of the surface of the block, and is adjacent to the groove bottom and the same The third torsion surface is coupled to form a fourth torsion surface, and the third torsion surface is formed with a torsion-like curved surface along the horizontal axis direction of the two sides on the longitudinal axis, and respectively on the two sides of the vertical axis Forming an upper concave twist surface and an upper convex twist surface, the third twist surface forming a second tread ridge line adjacent to the surface of the block, the fourth twist surface being along the vertical axis as a reference line respectively The transverse axis direction of the two sides forms a torsion-shaped curved surface, and a convex torsion surface and a lower concave twist surface are respectively formed on both sides of the longitudinal axis, and the lower convex twisted surface is engaged with the upper concave twisted surface, the concave The twisted surface is coupled to the upper convex twisted surface, and the fourth twisted surface forms a second groove bottom ridge line adjacent to the groove bottom; the twisted wall surfaces of each of the first and second sipe walls are at a predetermined distance from each other The symmetrical and parallel state is continuously disposed on the block with a preset length and a preset period. The twisted tire sipe structure with biaxial rotation according to claim 1, wherein each of the first tread ridge line and the first groove bottom ridge line are mirror-symmetrical with each other on the horizontal axis; The second tread ridge line and the second groove bottom ridge line are mirror-symmetrical to each other with respect to the horizontal axis. The twisted tire sipe structure with biaxial rotation according to claim 1, wherein each of the first tread ridge line and the first groove bottom ridge line are mirrored on each other with the vertical axis as a reference a symmetrical state; each of the second tread ridge line and the second groove bottom ridge line are mirror-symmetrical to each other with respect to the longitudinal axis. The twisted tire sipe structure with biaxial rotation according to claim 1, wherein each of the first and second tread ridge lines are parallel to each other; each of the first and second groove bottoms The ridge lines are in a straight line parallel to each other. The twisted tire sipe structure with biaxial rotation according to claim 1, wherein each of the first and second tread ridge lines are in a wave shape parallel to each other; each of the first and second groove bottoms The ridge lines are in a wave shape parallel to each other. The twisted tire sipe structure with biaxial rotation according to claim 1, wherein each of the first and second tread ridge lines are in a line shape parallel to each other; each of the first and second groove bottoms The ridge lines are in a line shape parallel to each other.