KR101859741B1 - Non pneumatic tire - Google Patents

Abstract

One embodiment of the present invention may provide a non-tribological tire comprising an inner band and an outer band spaced from each other, the non-tributary tire comprising an inner band and an outer band, A band portion spaced apart from the inner band and surrounding the outer circumference of the inner band; And a spoke portion provided between the inner band and the outer band, wherein the spoke portion includes a first bend portion that is convexly bent to one side in the circumferential direction, and a second bend portion that is connected to the first bend portion, And a second bent portion that is bent.

Description

Nonpublic tire {NON PNEUMATIC TIRE}

The present invention relates to a non-entry tire.

Tires are mounted on wheels of various vehicles, from small vehicles to heavy equipment, to support the load of the vehicle, to transmit the power of the vehicle to the ground, and to absorb vibrations and shocks from the ground when the vehicle is traveling Function.

In the case of conventional pneumatic tires, air pressure is provided inside, which provides an excellent effect of buffering against collision and bending. However, when the tire is broken due to stabbing or impact due to an external material, the internal air pressure is not maintained, so that it is difficult to function as a tire. In addition, when the tire is broken during traveling, the handling and braking ability of the vehicle may be lowered, which may cause a safety problem.

In order to solve this problem, a non-proprietary tire which does not require internal air filling has been developed. In the case of unofficial tires, spokes are provided between the tread and the wheel to perform the functions performed by the internal air pressure of the existing pneumatic tire.

These non-tired tires are determined by the structure and shape of the spokes, such as buffering effect and running ability, and are generally applied to low-speed vehicles or special-purpose vehicles. Therefore, there is a need for research on a universal spoke structure applicable to various vehicle environments and a non-proprietary tire including the same.

It is an object of the present invention to provide a non-publicly writable tire which can be used universally.

According to an embodiment of the present invention, there is provided an antenna device comprising: a band portion including an inner band and an outer band, the outer band being spaced apart from the inner band and surrounding the outer circumference of the inner band; And a spoke portion provided between the inner band and the outer band, wherein the spoke portion includes a first spoke extending in a radial direction; And a second spoke extending in the radial direction and configured to be symmetrical about the first spoke about an axis along the radial direction, wherein the first spoke and the second spoke are connected to the inner band, A first inclined portion formed to be inclined toward the outer band; A second inclined portion connected to the first inclined portion and inclined in a direction opposite to the first inclined portion toward the outer band; And a semicircular portion provided between the second inclined portion and the outer band.

Also, the first spokes and the second spokes may be arranged alternately in plural numbers.

Further, a non-airbag tire may be provided in which two of the first spokes and the two second spokes, which are alternately and continuously arranged, can form a continuous single arc.

The spoke portion may further include a connecting spoke connected between the first spoke 100 and the second spoke 200 between the first spoke 100 and the second spoke 200, have.

Also, the connection spokes may be provided in a plurality, and the plurality of connection spokes may be arranged to form a single continuous circle in the circumferential direction.

The end of the semicircular portion of the first spoke is connected to the end of the semicircular portion of the second spoke disposed on the other side of the circumferential direction of the first spoke,

Wherein the semicircular portion of the first spoke and the semicircular portion of the second spoke are configured to form a circular hole.

Further, the semicircular portion of the first spokes may be disposed apart from the semicircular portions of the second spokes disposed on the other side of the first spokes in the circumferential direction.

The inner end of the first inclined portion of the first spoke and the inner end of the first inclined portion of the second spoke disposed on the other side circumferentially of the first spoke are configured to be connected to each other. .

And the inner end of the first inclined portion of the first spoke and the inner end of the first inclined portion of the second spoke disposed on the other side circumferentially of the first spoke are spaced apart from each other .

The first inclined portion of the first spoke and the first inclined portion of the second spoke disposed on one circumferential side of the first spoke form a first hole, and the first inclined portion of the first spoke, The first inclined portion and the second inclined portion of the second spoke form a second hole and the second inclined portion of the first spoke and the first inclined portion of the second spoke form a second hole, And the second inclined portion of the second spoke disposed on one circumferential side of the second spoke forms a third hole.

Further, the first inclined portion and the second inclined portion may be configured to incline in different directions.

And a second inclined portion of the first spoke, and a second inclined portion of the first spoke, and a second inclined portion of the first spoke, And the inner end of the portion is connected.

The non-issue writing tire according to an embodiment of the present invention can improve the load supporting ability, the running ability, the bending ability and the durability.

1 is a schematic perspective view of a non-tired tire according to an embodiment of the present invention.
2 is a side view of the nontranscribed tire of FIG.
3 is an enlarged view of a portion A in Fig.
FIG. 4A is a cross-sectional view schematically showing the distribution of the ground pressure when a load is applied to the non-open-write tire according to the embodiment of the present invention. FIG.
4B is a cross-sectional view schematically showing the distribution of the ground pressure when a load is applied to the nontranscribed tire according to the prior art.

Prior to the detailed description of the present invention, the terms or words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning, and the inventor may designate his own invention in the best way It should be construed in accordance with the technical idea of the present invention based on the principle that it can be appropriately defined as a concept of a term to describe it. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the elements in the accompanying drawings are exaggerated, omitted, or schematically shown, and the size of each element does not entirely reflect the actual size.

The 'radial direction (r)' described below means a radial direction of the tire, and the 'axial direction (a)' means a direction orthogonal to the radial direction and parallel to the rotation axis of the tire do. The axial direction does not necessarily pass the center of the rotation axis of the tire but includes a direction parallel to the rotation axis direction of the tire. Also, 'circumferential direction (c)' is a direction along the outer circumferential surface of the tire, and means a direction perpendicular to the radial direction. This circumferential direction can be either clockwise or counterclockwise when viewed from the side of the tire. On the other hand, unless otherwise noted, the directions encompass both positive and negative directions.

Hereinafter, with reference to Figs. 1 to 3, a configuration of a non-publicly-writing tire according to an embodiment of the present invention will be described. Fig. 1 is a schematic perspective view of a non-tired tire according to an embodiment of the present invention, Fig. 2 is a side view of a non-tired tire of Fig. 1, and Fig. 3 is an enlarged view of a portion A of Fig.

Referring to FIGS. 1 to 3, a non-public tire 1 according to an embodiment of the present invention may include a band portion 10 and a spoke portion 20.

The band portion 10 may have a shape corresponding to the overall contour of the non-entry tire. The band portion 10 may be, for example, a circular cylinder, but is not limited thereto. Further, the band portion 10 may be formed integrally with the spoke portion 20 described later.

The band portion 10 may include a band-shaped inner band 11 and an outer band 12, both ends of which are connected to each other with a predetermined width. The outer band 12 is spaced apart from the inner band 11 in the radial direction r and can wrap the outer circumferential surface of the inner band 11.

A rim (not shown) may be coupled to the inner peripheral surface of the inner band 11. Therefore, the shape of the inner band 11 can be variously changed corresponding to the shape of the rim.

The outer band 12 may be spaced a predetermined distance from the inner band 11 so as to surround the inner band 11. In other words, the inner peripheral surface of the outer band 12 and the outer peripheral surface of the inner band 11 can be opposed to each other. On the other hand, the outer band 12 and the inner band 11 can be connected by a spoke portion 20 to be described later.

The outer band 12 may have a sheer band 13 on its outer circumferential surface. The share band 13 may be disposed along the circumferential direction of the outer band 12 in a shape corresponding to the outer band 12.

The shear band 13 can primarily serve to relieve the initial stress acting on the nontranscribed tire 1 and can be made of a composite material comprising carbon fibers or a composite material comprising steel cords, layer. For example, the share band 13 may be made of one or more layers of steel cord belts made of Carbon Fiber Reinforced Plastics (CFRP) or used in pneumatic tires. The thickness of the share band 13 in the radial direction r may be 2 mm or more and 10 mm or less.

A tread 30 may be provided on the outer circumferential surface of the share band 13. The tread 30 is disposed on the outermost side of the non-filled tire 1 and can be in direct contact with the ground surface. The tread 30 may employ various structures commonly used in the art.

The spoke portion 20 may be provided between the inner band 11 and the outer band 12. The spoke portion 20 may comprise a Thermo Plastic Elastomer (TPE). For example, the spoke portion 20 may be formed from a thermoplastic polyester elastomer (TPEE), a thermoplastic polyurethane elastomer (TPU), a thermo plastic olefinic elastomer (TPO), a thermoplastic polyamide elastomer Elastomer (Thermo Plastic Polyamide Elastomer, TPAE), and the like. The spoke portion 20 may serve as a support for connecting the inner band 11 and the outer band 12. In addition, the spoke portion 20 can serve as a damping material by dispersing and absorbing impact applied to the non-tired tire 1, and plays a role of supporting a load of an arbitrary vehicle to which the non-tired tire 1 is coupled can do. As described above, the spoke portion 20 plays a role of impact mitigation and a function of supporting a load.

A plurality of such spoke portions 20 may be provided and a plurality of spoke portions 20 may be provided so as to form a predetermined pattern between the inner band 11 and the outer band 12, have.

The spoke portion 20 may include a first spoke 100 and a second spoke 200 that extend in a radial direction. The first spokes 100 and the second spokes 200 are disposed alternately along the circumferential direction c and have symmetrical shapes.

The first spoke 100 may include a first inclined portion 110 and a second inclined portion 120. The second spokes 200 may include a first inclined portion 210 and a second inclined portion 220, . ≪ / RTI >

The first inclined portions 110 and 210 may be formed to be connected to the inner band 11 and be inclined toward the outer band 12. In other words, the first slopes 110 and 210 can be formed to extend from the inner band 11 toward the outer band 12, and to be shifted from the axis along the radial direction r by a predetermined angle. Further, the first inclined portions 110 and 210 can be bent so as to be convex toward the inner band 11 when viewed in the axial direction (a).

The second inclined portions 120 and 220 may be connected to the first inclined portions 110 and 210 and be inclined toward the outer band 12. In other words, the first inclined portions 110 and 210 may be formed to extend from the first inclined portions 110 and 210 toward the outer band 12 so as to be shifted from the axis along the radial direction r by a predetermined angle have. The direction in which the first inclined portions 110 and 210 are tilted and the direction in which the second inclined portions 120 and 220 are inclined are reversed when viewed in the axial direction (a). Further, the second inclined portions 120 and 220 can be bent so as to be convex toward the outer band 11 when viewed in the axial direction (a).

The first spokes 100 and the second spokes 200 may be configured symmetrically about an axis ra extending along the radial direction r. The first inclined portion 110 of the first spoke 100 and the first inclined portion 210 of the second spoke 200 are opposite to each other and the second inclined portion 210 of the first spoke 100, The direction in which the second inclined portion 220 of the second spokes 200 is tilted is also opposite to the direction in which the second inclined portions 220 are inclined.

The inner end of the first ramp 110 of the first spoke 100 and the inner end of the first ramp 210 of the second spoke 200 form a convex curve towards the inner band 11, Can be connected. The outer end of the second ramp 120 of the first spoke 100 and the outer end of the second ramp 220 of the second spoke 200 form a convex curve toward the outer band 12 And can be connected to each other.

The outer end of the first inclined portion 110 of the first spoke 100, the outer end of the first inclined portion 210 of the second spoke 200, the second inclined portion 120 of the first spoke 100, And the inner end of the second inclined portion 220 of the second spoke 200 may be connected at any one point. The outer end of the first inclined portion 110 of the first spoke 100, the outer end of the first inclined portion 210 of the second spoke 200, the second inclined portion of the first spoke 100 120 and the point at which the inner end of the second ramp 220 of the second spoke 200 are connected can be defined as the node 21. The distance d1 between the node 21 and the inner band 11 can be configured to be smaller than the distance d2 between the node 21 and the outer band 12. [ For example, the ratio of the distance d1 between the node 21 and the inner band 11 and the distance d2 between the node 21 and the outer band 12 may be 1: 1 or more and 1: 2 or less have.

The first spokes 100 and the second spokes 200 are arranged alternately along the circumferential direction c and the first spokes 100 and the second spokes 200 are arranged continuously in the axial direction a, And can be configured to form two sine wave shapes. In addition, when the ratio of the distance d1 between the node 21 and the inner band 11 and the distance d2 between the node 21 and the outer band 12 is 1: 1, May be provided symmetrically about an imaginary circle (ic) between the inner band (11) and the outer band (12).

For example, along the circumferential direction c, a first spoke 100 'on one side, a second spoke 200' on one side, a first spoke 100 '' on the other side, and a second spoke 200 ' The first inclined portion 110 of one side of the first spokes 100 ', the first inclined portion 210 of the one side of the second spokes 200', and the first inclined portion 210 of the other side of the second spokes 200 ' The second inclined portion 120 of the second spoke 200 '' and the second inclined portion 220 of the second spoke 200 '' of the other side may form a first snaked wave shape. The second inclined portion 220 of the first spoke 100 'of one side, the second inclined portion 220 of the second spoke 200' of one side, and the second inclined portion 220 of the first spoke 100 ' 1 inclined portion 110 and the first inclined portion 210 of the second spoke 200 '' on the other side may form a second sash.

Meanwhile, the spoke part 20 may be composed of two stages including an inner layer and an outer layer around the connection spokes 300. [ The inner layer is constituted by the first ramp portion 110 of the first spoke 100 and the first ramp portion 210 of the second spoke 200 and the outer layer is constituted by the second ramp portion 210 of the first spoke 100, And the second inclined portion 220 of the second spokes 200. [0034]

The first spokes 100 and the second spokes 200 disposed between the inner band 11 and the outer band 12 when seen in the axial direction . The hole 300 may include a first hole 310, a second hole 320 and a third hole 330. The hole 300 may have a plurality of May be provided.

The first hole 310 is adjacent to the inner band 11 side and includes an inner band 11, a first inclined portion 110 of the first spoke 100 and a first inclined portion 110 of the second spoke 200 210). The first hole 310 may have a shape similar to a triangle. In this case, the base of the triangle may be disposed on the inner band 11 side.

The second hole 320 may be formed by the outer band 12, the second inclined portion 120 of the first spoke 100, and the second inclined portion 220 of the second spokes 200. This second hole 320 may have a shape similar to a triangle, in which case the base of the triangle may be disposed on the side of the outer band 12. Also, the second holes 330 may be disposed in parallel with the first holes 310 in the radial direction r.

The third hole 330 is provided between the first hole 310 and the second hole 320 and is connected to the first and second inclined portions 110 and 120 of the first spoke 100, And the first and second inclined portions 210 and 220 of the base 200. The third hole 330 may have a shape similar to a quadrangle in which case one of the vertices of the quadrangle is disposed toward the inner band 11 and the other vertex is disposed toward the outer band 12 .

Hereinafter, the operation and effect of the unofficial tire having such a structure will be described with reference to Figs. 4A and 4B. FIG. 4A is a cross-sectional view schematically illustrating the distribution of the ground pressure when a load is applied to a non-tired tire according to an embodiment of the present invention. FIG. Sectional view schematically showing the ground pressure distribution.

Referring to FIG. 4A, it can be seen that the load is also transferred to the portion (red region) where the non-airbag tire directly contacts the ground according to an embodiment of the present invention and the peripheral portion (green-yellow region) of the direct contact portion. As a result, the load applied to the nontranscribed tire in a wide area as a whole can be supported and can have a relatively low displacement (0.432 inch). Referring to FIG. 4B, it can be seen that the prior art nontranscribed tire has a high displacement (0.763 inch) when a load is transmitted. It can also be seen that the prior art nonspecific tires are separated in the circumferential direction when stress is applied due to mismatching of spokes.

The plurality of spoke portions 20 may be arranged along the radial direction and the holes 300 may be formed between the spoke portions 20. [ The spoke portion 20 also includes an inner layer formed by the first angled portions 110 and 210 of the first and second spokes 100 and 200 and an inner layer formed by the second angled portions of the first and second spokes 100 and 200, Stage spokes that include the outer portions 120 and 220. When a load is applied from the road surface, the inner layer distributes the load delivered from the outer layer by a compressive force, And the neighboring inclined portions redistribute the transmitted compressive force to the adjacent inclined portions. Through this transfer process, the load applied to the tire 1 can be dispersed, and the running performance, the bending ability and the durability can be improved.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that modifications and variations are within the scope of the appended claims.

1: non-entry tires 10: band portion
11: inner band 12: outer band
13: share band 20: spoke portion
21: Node 30: Tread
100: first spoke 200: second spoke
110, 210: first inclined portion 120, 220: second inclined portion
300: hole 310: first hole
320: second hole 330: third hole

Claims (11)

A band portion including an inner band and an outer band, the outer band being spaced apart from the inner band and surrounding the outer circumference of the inner band; And
And a spoke portion provided between the inner band and the outer band,
The spoke portion
A first spoke extending in a radial direction; And
And a second spoke extending in the radial direction and configured to be symmetrical about the first spoke about an axis along the radial direction,
The first spoke and the second spoke,
A first inclined portion connected to the inner band and inclined toward the outer band; And
And a second inclined portion connected to the first inclined portion and inclined toward an opposite direction to the first inclined portion toward the outer band,
An outer end of said first ramp of said first spoke and an inner end of said second ramp of said first spoke are connected at a node,
An outer end of the first ramp of the second spoke and an inner end of the second ramp of the second spoke are connected at the node,
Wherein the distance between the node and the inner band is less than the distance between the node and the outer band,
Wherein the first spokes and the second spokes are arranged alternately in plural,
Wherein the first ramp portion of the first spoke and the second ramp portion of the second spoke are inclined at a first angle with respect to a virtual axis along the radial direction,
The first ramp portion of the first spoke and the first ramp portion of the first spoke are inclined at a second angle opposite to the first angle with respect to a virtual axis along the radial direction,
The inner end of the first ramp of the first spoke and the inner end of the first ramp of the second spoke form a curve and are connected,
Wherein the outer end of the second ramp of the first spoke and the outer end of the second ramp of the second spoke form a curve and are connected. delete delete delete delete delete delete The method according to claim 1,
Wherein the ratio of the distance between the node and the inner band to the distance between the node and the outer band is 1: 2 or less. The method according to claim 1,
Wherein a shear band is provided on the outer peripheral surface of the outer band and a thickness of the shear band in the radial direction is not less than 2 mm and not more than 10 mm, The method according to claim 1,
Wherein the inner band, the first ramp of the first spoke, and the first ramp of the second spoke form a first hole,
Wherein the outer band, the second ramp of the first spoke, and the second ramp of the second spoke form a second hole,
Wherein the first inclined portion of the first spoke, the first inclined portion of the second spoke, the second inclined portion of the first spoke, and the second inclined portion of the second spoke form a third hole, . 11. The method of claim 10,
And the third hole is provided between the first hole and the second hole.

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