KR101782619B1 - Tire - Google Patents

Abstract

According to an embodiment of the present invention, provided is a tire which comprises at least one tread block in which at least one sipe is formed. On one side surface of the sipe, a first protrusion protruding toward the other side surface opposite to the one side surface of the sipe is provided, and on the other side surface, a first groove which is concave at an internal side of the tread block is provided in a position corresponding to the first protrusion. A cross-section area of the first protrusion becomes smaller 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, and the wet grip and handling performance of the tire can be improved by adjusting the shape and depth of the sieve. The siding gives flexibility to the tire tread to secure the contact with the road surface, thereby improving the ride quality, and improving the lateral slip restraining function when the vehicle travels on a curve road or a zigzag road surface.

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 includes at least one tread block having at least one sipe formed thereon, and a first projection protruding toward the other side of the sipe facing the one side surface is provided on one side surface of the sipe And the other side surface is provided with a first groove recessed inwardly of the tread block at a position corresponding to the first projection, wherein the first projection has a smaller cross-sectional area in the depth direction of the sieve .

In one embodiment of the present invention, the shape of the first groove may correspond to the shape of the first projection.

In an embodiment of the present invention, the upper surface of the first protrusion may be formed to extend from the upper surface of the tread block.

In one embodiment of the present invention, the length of the first projection on the top surface of the tread block with respect to the width direction of the sieve is greater than the length of the first groove on the top surface of the tread block Lt; / RTI >

In one embodiment of the present invention, the height of the first projection with respect to the depth direction of the sipe may be smaller than the depth of the sipe.

In one embodiment of the present invention, the first groove may include a first drain groove extending from one end of the first groove to a depth direction of the sipe.

In one embodiment of the present invention, the first drainage groove may communicate with the sipe.

In one embodiment of the present invention, the width of the first protrusion on one side of the sipe with respect to the longitudinal direction of the sipe may be equal to or less than the width of the first groove on the other side of the sipe .

In one embodiment of the present invention, the second protrusion is disposed on the other side of the sipe and is adjacent to the first protrusion and protruded toward the one side, and the second protrusion is formed on one side of the sipe, And a second groove recessed inwardly of the tread block may be further provided at a corresponding position.

In one embodiment of the present invention, the shape of the second groove may correspond to the shape of the second projection.

In one embodiment of the present invention, the shape and size of the second projection may be the same as the shape and size of the first projection.

In one embodiment of the present invention, the second groove may include a second drain groove extending from one end of the second groove to a depth direction of the sipe.

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

The tire according to the embodiments of the present invention has the first protrusion on one side of the sipe and the first groove on the other side corresponding to the sipe, so that, despite the close of the sipe at the time of running of the tire, It is possible to improve the drainage function of the tire. In particular, the tire can prevent the siphon from being completely closed by making the length of the first projection with respect to the width direction of the sipes larger than the length of the first sipes. In addition, the tire can minimize the decrease in the rigidity of the tread block by forming the first projection and the second projection from the same line as the tread block.

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 partial cross-sectional perspective view of Fig. 1. 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 of part A of FIG. 1, FIG. 3 is a cross-sectional view taken along line III-III 'of FIG. 2, and FIG. 4 is a partial cross-sectional perspective view of FIG. 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. A first projection 101A protruding toward the other side face 10B is provided on one side face 10A of the sipe 10 and a second projection 101A protruded toward the other side face 10B is provided on the other side face 10B of the sipe 10, A first groove 103B recessed inwardly of the tread block 116 may be provided. In other words, a line passing through the center of the first projection 101A can coincide with a line passing through the center of the first groove 103B.

On the other hand, in another embodiment, a second projection 101B, which is positioned adjacent to the first projection 101A and protruded toward the first side 10A, is further provided on the other side 10B of the sipe 10 . The sidewall 10A may further include a second groove 103A recessed inwardly of the tread block 116 at a position corresponding to the second projection 101B. The second projection 101B may be provided on one side 10A in the same manner as the first projection 101A and the second groove 103A may be provided on the other side 10B in the same manner as the first groove 103B. However, as described above, by symmetrically arranging them on different sides, the drainage space can be secured even in the closing of the siphon 10 corresponding to various traveling directions.

In another embodiment, the siphon 10 includes a first projection 101A and a second projection 101B, and a first projection 101A and a second projection 101B disposed at positions corresponding to the first projection 101A and the second projection 101B, The groove 103B and the second groove 103A may be provided as one drainage unit and a plurality of drainage units may be provided. However, for convenience of explanation, as shown in the drawing, the case where the siphon 10 includes the first projection 101A and the second projection 101B and the first groove 103B and the second groove 103A I will explain it mainly.

The sectional area of the first projection 101A may become smaller toward the depth direction of the sipe 10. [ As shown in the drawing, the cross-section of the first projection 101A may be semi-elliptical or semicircular, and the cross-sectional area of the first projection 101A may become smaller toward the depth direction of the siphon 10, have. In another embodiment, the cross section of the first projection 101A may be a square or a triangle, and the first projection 101A may have a semi-pyramid shape or a semi-triangular pyramid shape.

The upper surface of the first projection 101A may be formed to extend from the upper surface 116A of the tread block 116. [ In other words, the first projection 101A has an inverted semi-conical shape and is formed in the same line as the upper surface 116A of the tread block 116, and is formed into a structure in which the cross-sectional area decreases toward the bottom surface of the sieve 10 . At this time, the height t1 of the first projection 101A with respect to the depth direction of the sifter 10 may be smaller than the depth t2 of the sphygmast 10, thereby securing the lower space of the sifter 10 It can sufficiently absorb the rain.

On the other hand, the shape of the first groove 103B may correspond to the shape of the first projection 101A. As shown in the figure, when the first projection 101A is semi-conical, the shape of the first groove 103B can also be a semi-conical groove recessed inward of the tread block 116. [ At this time, the length d1 of the first projection 101A on the upper surface 116A of the tread block 116 with respect to the width direction of the sieve 10 is smaller than the length d1 of the tread block 116 with respect to the width direction of the sieve 10. [ The first grooves 103B on the upper surface 116A of the base plate 110 may be longer than the length. In other words, the shape of the first groove 103B corresponds to the shape of the first projection 101A, but it is not necessarily the same. The length of the first protrusion 101A is larger than the length of the first groove 103B in the embodiment so that the gap between the siphons 10 is maintained even when the siphon 10 is closed during vehicle operation, ) Is not completely closed.

The width W1 of the first projection 101A on one side 10A of the sipe 10 with respect to the longitudinal direction of the sieve 10 is larger than the width W1 of the first projection 101A on the other side 10B of the sieve 10. [ May be equal to or less than the width (W2) The length d1 of the first projection 101A is equal to the length d1 of the first groove 103B even if the width W1 of the first projection 101A is equal to the width W2 of the first groove 103B, The drainage space can be ensured between the first protrusion 101A and the first groove 103B as well as the gap between the siphons 10 because the length d2 of the first protrusion 101A is larger than the length d2 of the first protrusion 101A. When the width W1 of the first projection 101A is smaller than the width W2 of the first groove 103B, it is of course possible to secure a wider drainage space than the same case.

On the other hand, the second projection 101B is not limited in shape and size, but may be formed in the same shape and size as the first projection 101A as an example. The second projection 101B is disposed adjacent to the first projection 101A and can be spaced apart at a predetermined interval to allow drainage between the first projection 101A and the second projection 101B. In another embodiment, the cross section of the second projection 101B may be different from the cross section of the first projection 101A. For example, the cross section of the first projection 101A may be semicircular and the cross section of the second projection 101B may be a quadrangle.

The second groove 103A may be formed to correspond to the shape of the second projection 101B. Therefore, if the second projection 101B has the same shape and size as the first projection 101A, the second groove 103A has the same size as the first groove 103B corresponding to the first projection 101A, Or the like.

At least one of the first groove 103B and the second groove 103A has a first drain groove extending from one end of the first groove 103B or the second groove 103A in the depth direction of the sipe 10 105B, or a second drain groove 105A. Hereinafter, for convenience of explanation, the first groove 103B and the second groove 103A each include a first drain groove 105B and a second drain groove 105A. In addition, the first drainage groove 105B and the second drainage groove 105A may be formed in the same shape. Therefore, the first drainage groove 105B will be mainly described.

Referring to Fig. 4, the first drainage groove 105B may extend from one end where the cross-sectional area of the first groove 103B becomes smaller. In other words, the first drainage groove 105B can extend in the depth direction from the first groove 103B. The first drainage groove 105B can communicate with the siphon 10. The first drainage groove 105B is not limited in depth in the depth direction of the siphon 10 but may be formed at least deeper than the height t1 of the first projection 101A. The first drainage groove 105B serves to guide the rainwater so that the rainwater absorbed in the siphon 10 can be discharged to the outside through the first groove 103B even in the sideward closing phenomenon.

As described above, the tire 1 according to the embodiment of the present invention has the first projection 101A on one side 10A of the sipe 10 and the first projection 101A on the other side 10B. The provision of the groove 103B makes it possible to secure a sufficient drainage space of the siphon 10 in spite of the closing of the siphon 10 during running of the tire 1 and improve the drainage function of the tire 1 . Particularly in the tire 1, the length d1 of the first projection 101A with respect to the width direction of the sipe 10 is made larger than the length d2 of the first groove 103B, so that the sieve 10 is completely closed Can be prevented. The tire 1 can minimize the deterioration of the rigidity of the tread block 116 by forming the first projection 101A and the second projection 101B from the same line as the tread block 116. [

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
103B: First home
103A: Second home
105B: first drainage groove
105A: Second drainage groove
110: Tread portion
114: Tread pattern
116A: upper surface
116: Tread block
120: side wall portion

Claims (12)

At least one tread block on which at least one sipe is formed,
A first protrusion protruding toward the other side surface of the sipe facing the one side surface is provided on one side surface of the sipe,
Wherein the other side surface is provided with a first groove recessed inwardly of the tread block at a position corresponding to the first projection,
Wherein the first projection has a smaller cross-sectional area in the depth direction of the sieve,
Wherein the length of the first projection on the top surface of the tread block with respect to the width direction of the sieve is greater than the length of the first groove on the top surface of the tread block with respect to the width direction of the sieve,
Wherein the first groove includes a first drain groove extending from one end of the first groove to a depth direction of the sipe,
Wherein the depth of the first drainage groove with respect to the depth direction is deeper than the height of the first projection. The method according to claim 1,
And the shape of the first groove corresponds to the shape of the first projection. The method according to claim 1,
And the upper surface of the first projection is formed to extend from the upper surface of the tread block. delete The method according to claim 1,
Wherein a height of the first projection with respect to a depth direction of the sipe is smaller than a depth of the sipe. delete The method according to claim 1,
And the first drainage groove communicates with the sipe. The method according to claim 1,
Wherein the width of the first projection at one side of the sipe with respect to the longitudinal direction of the sipe is equal to or less than the width of the first groove at the other side of the sipe. The method according to claim 1,
And a second projection disposed adjacent to the first projection on the other side of the sipe and protruding toward the one side,
And a second groove recessed inwardly of the tread block at a position corresponding to the second projection is further provided on one side surface of the sipe. 10. The method of claim 9,
And the shape of the second groove corresponds to the shape of the second projection. 10. The method of claim 9,
And the shape and size of the second projection are the same as the shape and size of the first projection. 10. The method of claim 9,
And the second groove includes a second drain groove extending from one end of the second groove to a depth direction of the sipe.

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