KR101782621B1 - Tire - Google Patents

Abstract

One embodiment of the present invention includes at least one tread block having at least one sipe formed therein. One side of the sipe includes: a first projection protruding toward the other side of the sipe facing the one side; and a first groove disposed adjacent to one end of the first projection and recessed inwardly of the tread block. The other side of the sipe includes: a second projection protruding toward the one side and disposed at a position corresponding to the first groove; and a second groove disposed at a position corresponding to the first projection and recessed inwardly of the tread block. The first groove and the second groove have a smaller cross-sectional area in a depth direction of the sipe.

Description

Tire {Tire}

Embodiments of the invention relate to tires.

In general, tires are designed to exhibit their intended performance, such as ride comfort, noise, maneuverability and drainability, at an early stage. In order to maintain the basic performance of the tire such as dry traction performance, wet traction performance, noise performance, etc., the tread has a plurality of longitudinal grooves formed in the circumferential direction and a plurality of transverse grooves formed in the width direction, A plurality of tread blocks are formed by the grooves.

Also, sieves may be formed on the tread block. The sip is typically formed at a predetermined depth and angle from the surface of the tread block, which can improve the wet grip and handling performance of the tire by adjusting the shape and depth of the sieve. Further, flexibility of the tire tread is imparted by the sipe, so that the contact with the road surface is ensured, the ride feeling is improved, and the lateral slip restraining function when the curve length or the zigzag road surface runs is improved.

However, the sip may be closed when the tread block is tilted in a certain direction when the vehicle is running. When the siphon closing phenomenon occurs, there is a problem that the space for absorbing water in the siphon is reduced and the drainage performance of the tire is deteriorated.

Embodiments of the present invention provide a tire capable of improving the drainage function even when the siphon is closed.

One embodiment of the present invention is a method of manufacturing a semiconductor device, comprising at least one tread block having at least one sipe formed therein, the first protrusion being protruded toward one side of the sipe opposite to the one side, The tread block includes a first groove, which is disposed adjacent to one end of the first projection and is recessed inwardly of the tread block. The other surface of the tread block protrudes toward the one side surface, Wherein the first groove and the second groove are disposed at positions corresponding to the first protrusions and are concave to the inside of the tread block, wherein the first groove and the second groove are formed in such a manner that the cross- , And tires.

In one embodiment of the present invention, the first projection and the second projection may extend in the longitudinal direction of the sipe.

 In one embodiment of the present invention, the first protrusions and the second protrusions may be arranged so that a part thereof overlaps with each other.

In one embodiment of the present invention, the first width of the first projection with respect to the width direction of the sipe may be the same as the second width of the second projection.

In one embodiment of the present invention, the first width of the first protrusion may be smaller than the half width of the sipe.

In one embodiment of the present invention, the first protrusion and the second protrusion may be disposed apart from the upper surface of the tread block.

In an embodiment of the present invention, the cross section of the first groove and the cross section of the second groove with respect to the depth direction of the sipe may be semicircular.

In one embodiment of the present invention, the length of the first protrusion and the length of the second protrusion with respect to the lengthwise direction of the sipe are respectively longer than the length of the second groove and the length of the first groove at the corresponding positions, It can be big.

In one embodiment of the present invention, the thickness of the first protrusion and the thickness of the second protrusion with respect to the depth direction of the sipe may be smaller than the depth of the second groove and the depth of the first groove, respectively.

In one embodiment of the present invention, the depth of the first groove and the depth of the second groove may be smaller than the depth of the sipe.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

A tire according to an embodiment of the present invention includes a first projection and a first groove on one side of a sipe and a second groove and a second projection on a corresponding side of the sipe, Despite this, it is possible to secure a sufficient drainage space of the sip, thereby improving the drainage function of the tire.

In particular, the tire can prevent the siphon from being completely closed by disposing the first projection and the second projection so as to overlap with each other.

Also, the tire can effectively discharge the rainwater from the lower space to the outside through the first groove and the second groove which have a smaller cross-sectional area with respect to the depth direction of the sipe.

1 is a perspective view schematically showing a tire according to an embodiment of the present invention.
2 is an enlarged perspective view showing part A of Fig.
3 is a cross-sectional view taken along line III-III 'of FIG.
Fig. 4 is a plan view of the sip of Fig. 3 viewed from above. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods of achieving them will be apparent with reference to the embodiments described in detail below with reference to the drawings. However, the present invention is not limited to the embodiments described below, but may be implemented in various forms.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding components throughout the drawings, and a duplicate description thereof will be omitted .

In the following embodiments, the terms first, second, and the like are used for the purpose of distinguishing one element from another element, not the limitative meaning.

In the following examples, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

In the following embodiments, terms such as inclusive or possessive are intended to mean that a feature, or element, described in the specification is present, and does not preclude the possibility that one or more other features or elements may be added.

In the drawings, components may be exaggerated or reduced in size for convenience of explanation. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings.

Hereinafter, the tire 1 according to the embodiments of the present invention will be described with reference to the drawings.

1 is a perspective view schematically showing a tire 1 according to an embodiment of the present invention.

Referring to FIG. 1, a tire 1 may include a tread portion 110 and a sidewall portion 120 extending from both sides of the tread portion 110.

The tread portion 110 is located on the outermost side of the tire 1 and is made of a thick rubber layer, and transmits the driving force and the braking force of the vehicle to the ground. The surface of the tread portion 110 may be provided with tread blocks 116 divided by tread patterns 114 and tread patterns 114 for steering stability, traction, and braking.

The tread patterns 114 may include grooves for drainage during running on wet road surfaces and sipes for improving traction and braking forces. The groove may include a circumferential groove coinciding with the running direction of the vehicle and a transverse groove between the circumferential groove. The tread block 116 occupies most of the tread portion 110, and contacts the ground directly to transmit the driving force and braking force of the vehicle to the ground.

The sidewall portion 120 is disposed to extend downward from an end portion of the tread portion 110. The side wall portion 120 is a side portion of the tire 1, which protects the carcass layer, provides lateral stability of the tire 1, and enhances ride comfort by performing bending motion. In addition, the side wall portion 120 serves to transmit the torque of the engine received through the drive shaft to the tread portion 110.

On the other hand, the tread block 116 may be formed with a sifter 10. The sip 10 may be a groove having a smaller size than the groove. The siphon 10 absorbs moisture at the time of traveling on a wet road surface and breaks the water film, so that the braking force of the tire 1 can be increased.

FIG. 2 is an enlarged perspective view showing part A of FIG. 1, FIG. 3 is a sectional view taken along the line III-III 'of FIG. 2, and FIG. 4 is a plan view of the cave 10 of FIG. 3 viewed from above. The width direction, the depth direction, and the length direction in the drawing are defined with reference to a sipe.

2 to 4, the siphon 10 may include one side 10A and the other side 10B opposite to the side 10A. The side surface 10A of the sipe 10 is provided with a first projection 101A protruding toward the other side 10B and a second projection 101B disposed adjacent to one end of the first projection 101A, A first groove 103A may be provided. A second projection 101B projecting toward one side face 10A and disposed at a position corresponding to the first groove 103A is formed on the other side face 10B of the sipe 10 and a second projection 101B corresponding to the first projection 101A And a second groove 103B recessed inwardly of the tread block 116 may be provided.

In another embodiment, the siphon 10 includes a first protrusion 101A and a first groove 103A, and a second protrusion 101A and a second groove 103B disposed at positions corresponding to the first protrusion 101A and the first groove 103A, respectively. The two grooves 103B and the second projection 101B may be provided as one drainage unit, and a plurality of drainage units may be provided. Further, the plurality of drainage units may be arranged apart from each other at regular intervals, and as another embodiment, some of the plurality of drainage units may be arranged in a state that they overlap each other. However, for convenience of explanation, it is assumed that the sifter 10 includes the first projection 101A and the first groove 103A and the second projection 101B and the second groove 103B as shown in the drawing I will explain it mainly.

The sectional area of the first groove 103A and the second groove 103B may become smaller toward the depth direction of the sip 10. [ As shown in the drawing, the cross section of the first groove 103A and the second groove 103B may be semi-elliptical or semicircular, and the cross-sectional area becomes smaller toward the depth direction of the siphon 10, And the second groove 103B may be in the form of a semi-conical shape recessed inward of the tread block 116. The cross section of the first groove 103A and the second groove 103B may be a square or a triangle and the first groove 103A and the second groove 103B may be formed inside the tread block 116 It may be a concave semi-pyramidal groove or a semi-triangular pyramid.

The upper surface of the first groove 103A and the second groove 103B can communicate with the upper surface of the tread block 116. [ In other words, the first groove 103A and the second groove 103B are inverted semicircular grooves, and grooves are formed on the same line as the upper surface of the tread block 116 to define the bottom surface of the sieve 10 And the cross-sectional area decreases. At this time, the depth of the first groove 103A and the depth of the second groove 103B with respect to the depth direction of the sifter 10 may be smaller than the depth of the sifter 10.

The first protrusion 101A and the second protrusion 101B may be formed to extend in the longitudinal direction of the sip 10. In the drawing, the first projection 101A and the second projection 101B are shown to have a rectangular parallelepiped shape elongated in the longitudinal direction of the sip 10.

In another embodiment, the first projection 101A and the second projection 101B may have a shape having a constant curvature with a semicircular cross-sectional area with respect to the longitudinal direction of the sip 10. However, when the first projection 101A and the second projection 101B are in contact with each other due to the closing phenomenon of the sifter 10, it may slip when having a certain curvature. Therefore, even when the first projection 101A and the second projection 101B are in contact with each other, the contact between the first projection 101A and the second projection 101B is flat, 10 can be prevented from being completely closed.

The first protrusion 101A and the second protrusion 101B may be arranged so that a part thereof overlaps with each other as described above. At this time, the first width d1 of the first projection 101A with respect to the width direction of the sipe 10 may be the same as the second width d2 of the second projection 101B, The first width d1 of the sifter 10 may be less than the half width W / 2 of the sifter 10. In other words, although the first protrusion 101A and the second protrusion 101B partially overlap each other, the first width d1 of the first protrusion 101A and the second width d2 of the second protrusion 101B, Are smaller than the width W of the sip 10, and are usually spaced apart from each other at regular intervals.

However, when the sip 10 is closed when the vehicle is running, the gap between the first projection 101A and the second projection 101B becomes narrow. At this time, the distance between the first projection 101A and the second projection 101B Can prevent the sifter 10 from being completely closed through the partially overlapping portion. The thickness t1 of the first projection 101A and the thickness t1 of the second projection 101B with respect to the depth direction of the sipe 10 may be smaller than the depth t2 of the sipe 10. [ Therefore, even if the first projection 101A and the second projection 101B are brought into contact with each other due to the closure of the sifter 10 during the middle of the vehicle, the lower space of the sifter 10 can be ensured to sufficiently absorb the rain.

On the other hand, the first projection 101A and the second projection 101B may be arranged to correspond to the second groove 103B and the first groove 103A, respectively. At this time, the length S1 of the first projection 101A and the length of the second projection 101B with respect to the longitudinal direction of the sipe 10 are the length S2 of the second groove 103B at the corresponding position, May be larger than the length of the first groove 103A.

For example, as shown in Fig. 4, the length S1 of the first projection 101A may be greater than the maximum length of the second groove 103B. Here, the second projection 101B may be the same as or different from the shape of the first projection 101A. The length and thickness of the second projection 101B may be larger than the length and the thickness of the first projection 101A. Hereinafter, the first protrusion 101A will be mainly described in order to omit redundant description.

Specifically, the length S1 of the first projection 101A with respect to the longitudinal direction of the sipe 10 can be larger than the length S2 of the second groove 103B. The thickness t1 of the first projection 101A with respect to the depth direction of the sipe 10 may be smaller than the depth of the second groove 103B.

The first projection 101A can prevent the sifter 10 from being completely closed through the overlapping area with the second projection 101B. Even if the first projection 101A does not overlap with the second projection 101B due to the second-order closing pressure of the sifter 10, the corresponding siphon 10 is prevented from moving in the second groove 103B, It is possible to maintain a constant distance d1 between the first and second ends. In other words, the length S1 of the first projection 101A is formed to be larger than the length S2 of the second groove 103B, and the thickness t1 of the first projection 101A is larger than the length S2 of the second groove 103B It is possible to secure the drainage space of the second groove 103B even when the sip 10 is closed during driving.

As described above, the tire 1 according to the embodiment of the present invention has the first projection 101A and the first groove 103A on one side 10A of the sipe 10, The side surface 10B is provided with the second groove 103B and the second projection 101B so that a sufficient drainage space of the sip 10 can be ensured despite the closing of the siphon 10 when the tire 1 is running So that the drainage function of the tire 1 can be improved.

Particularly, the tire 1 can prevent the sifter 10 from being completely closed by disposing the first projection 101A and the second projection 101B so as to overlap with each other. In addition, the tire 1 can effectively discharge rainwater from the lower space through the first groove 103A and the second groove 103B having a smaller cross-sectional area with respect to the depth direction of the sipe 10. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the exemplary embodiments, and that various changes and modifications may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: Tire
10: Saif
10A: one side
10B: other side
101A: first projection
101B: second projection
103A: First home
103B: Second home
110: Tread portion
114: Tread pattern
116: Tread block
120: side wall portion

Claims (10)

At least one tread block on which at least one sipe is formed,
A first projection protruding toward the other side of the sipe facing the one side surface of the sipe and a first groove recessed inward of the tread block adjacent to the one end of the first projection,
A second projection projecting from the other side surface of the sipe toward the one side surface and disposed at a position corresponding to the first groove; a second projection disposed at a position corresponding to the first projection, Grooves are provided,
Wherein the first groove and the second groove have a smaller cross-sectional area in a depth direction of the sieve,
Wherein the first projection and the second projection are arranged so that a part thereof overlaps with each other,
Wherein the first groove and the second groove are not overlapped with each other,
The thickness of the first projection and the thickness of the second projection with respect to the depth direction of the sipe are smaller than the depth of the second groove and the depth of the first groove, respectively. The method according to claim 1,
Wherein the first projection and the second projection extend in the longitudinal direction of the sipe. delete The method according to claim 1,
Wherein the first width of the first projection with respect to the width direction of the sipe is equal to the second width of the second projection. 5. The method of claim 4,
Wherein the first width of the first projection is smaller than the half width of the sip. The method according to claim 1,
Wherein the first projection and the second projection are spaced from the upper surface of the tread block. The method according to claim 1,
Wherein the cross section of the first groove and the cross section of the second groove with respect to the depth direction of the sipe are semicircular. The method according to claim 1,
The length of the first projection and the length of the second projection with respect to the longitudinal direction of the sipe are respectively greater than the length of the second groove and the length of the first groove at the corresponding positions. delete The method according to claim 1,
Wherein the depth of the first groove and the depth of the second groove are smaller than the depth of the sipe.

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