TWI674204B - Tire having multiple treads - Google Patents

Abstract

A tire having a plurality of treads includes a first tread and at least a second tread, and the second tread is connected to the first tread. In this way, it is convenient to adopt the first tread or the second tread for different needs, so as to improve the applicability of the product.

Description

Tire with multiple treads

The present invention relates to a tire, especially a tire having a plurality of treads.

Under different driving conditions (such as highway, snow, wetland, etc.), there will be different requirements for the performance of the tire. The main method is to adjust the tire tread, and by using the shape and arrangement direction of the tire tread or the groove wall, the tire has various effects such as grip, noise reduction, drainage, non-slip, and stone rowing.

However, the design of the tire tread adjustment is mainly developed for a specific road surface. The applicable road surfaces are limited, so users still need to replace different tires in a timely manner depending on the conditions of the road surface.

Recently, how to make the tires applicable to a wider variety of road conditions has become one of the issues that all circles attach importance to. Relevant cases include, for example, "Tire" of U.S. Invention Patent Application Publication No. 20160200139A1, and "Airless tire" of U.S. Invention Patent Application Publication No. 20160193877 A1. These technologies are mainly provided with a plurality of tread blocks with variable spacing on the tire. This can change the usage mode (such as road mode, snow mode or off-road mode).

However, the tire of the above technology needs to be provided with an adjustment mechanism for adjusting the distance between the tread blocks. This adjustment mechanism will increase the complexity of the overall structure and may not be easy to produce and implement.

Therefore, in order for the tire to meet different needs, the inventor proposed a tire having a plurality of treads, including a first tread and at least a second tread. The first tread has a first tire in an axial direction. The width T1, the second tread is connected to the first tread, and the second tread has an axial direction The second tread width is T2, 0.5T1 <T2 <2T1, and the aforementioned second tread gradually extends toward the direction away from the first tread with different curvatures.

The present invention may also be a tire having a plurality of treads, including a first tread and at least a second tread. The first tread has a first tread width in the axial direction, and the second tread is connected to the first tread. A tread, and the second tread has a second tread width in the axial direction, and the second tread gradually extends with different curvatures in a direction away from the first tread.

Further, the tread patterns of the first tread and the aforementioned second tread are the same or different from each other.

Further, the performance of the first tread and the aforementioned second tread are the same or different from each other.

Further, the first tread and the aforementioned second tread are each provided by a single tread gel.

Further, the second tread width T2 is larger than the first tread width T1.

Further, the first tread and the aforementioned second tread are both disposed on an outer layer of a carcass. The carcass includes an inner surface and an elastic support portion, and the elastic support portion is connected to the inner surface.

Further, the elastic supporting portion includes a plurality of elastic hollow supporting bodies.

Further, the aforementioned plurality of elastic hollow support bodies are distributed radially in a ring shape.

Further, the size of the plurality of elastic hollow support bodies increases toward the inner surface.

Further, the elastic supporting portion has at least one layer in an axial direction, and the thickness of the elastic supporting portion is between 1% and 20% of (T1 + T2).

Further, the elastic supporting portion has at least one layer in an axial direction, and a thickness of the elastic supporting portion is between 6% and 16% of (T1 + T2).

Further, the elastic supporting portion has at least one layer in an axial direction, and the thickness of the elastic supporting portion is between 8% and 14% of (T1 + T2).

Further, it further comprises a carcass and a rim, and the carcass is mounted on the rim. The carcass includes an outer layer, an inner surface, and an elastic support portion. The first tread and the second tread are both located in the In the outer layer, the elastic supporting portion is connected to the inner surface and contacts the rim.

Further, the tire may be a hemisphere. The tire may be hollow.

According to the above technical features, the following effects can be achieved:

1. Provide multiple treads on the same tire to facilitate the use of different performance treads for different road conditions and improve the applicability of the product.

2. The plurality of treads can be different from each other due to different tread patterns or changes in properties such as hardness and wear resistance.

3. Since the second tread on the side of the first tread gradually extends away from the first tread, the second tread can also be used to increase the ground contact area on rough roads.

4. Because the first and second treads with different ground contact areas are provided, it can meet the requirements of different rolling resistance (for example, cornering needs to increase the ground contact area to improve grip, low rolling resistance when driving at high speed, etc.).

5. Can be applied to non-pneumatic tires, which can avoid the problem that traditional pneumatic tires cannot be used after losing wind pressure.

6. The plurality of elastic hollow support bodies may be distributed radially in a ring shape, and the size of the aforementioned plurality of elastic hollow support bodies may be increased from the inside to the outside, so that the structural strength of the elastic support portion is gradually increased from the outside to the inside.

(100) (100C) (100D) ‧‧‧Tire

(1) (1A) (1C) (1D) ‧‧‧First tread

(11) ‧‧‧First sidewall

(2) (2A) (2C) (2D) ‧‧‧Second tread

(21) (21C) ‧‧‧Second sidewall

(22C) ‧‧‧Extension

(3) (3B) ‧‧‧Matrix

(31) ‧‧‧Outer

(32) (32B) ‧‧‧Inside

(33) ‧‧‧Axle connection

(34) (34B) ‧‧‧Elastic support

(341) ‧‧‧Elastic hollow support

(4B) ‧‧‧Rim

(A) ‧‧‧car body

(D) ‧‧‧thickness

(G) ‧‧‧ main ditch

(R) ‧‧‧Axial

(S2) (S1) ‧‧‧Width

(T1) ‧‧‧First tread width

(T2) ‧‧‧Second tread width

(L) ‧‧‧Axial

(θ) ‧‧‧angle

[First image] is a schematic diagram of the three-dimensional appearance of the first embodiment of the present invention.

[Second figure] is a schematic front view of the first embodiment of the present invention.

[Third figure] It is a schematic diagram of changing the included angle and the front view of the first embodiment of the present invention.

[Fourth A] It is a schematic front view and a sectional view of the first embodiment of the present invention.

[Fourth B] is a schematic side view of the first embodiment of the present invention.

[Fifth Figure] is a schematic diagram of a first use state of the first embodiment of the present invention.

[Sixth Figure] is a schematic diagram of a second use state of the first embodiment of the present invention.

[Seventh Figure] is a schematic diagram of the third use state of the first embodiment of the present invention.

[Eighth Figure] A fourth usage state diagram of the first embodiment of the present invention.

[The ninth figure] is a fifth use state diagram of the first embodiment of the present invention.

[Tenth Figure] A schematic side view of a second embodiment of the present invention.

[Eleventh figure] is a schematic front view of the third embodiment of the present invention.

[Twelfth figure] A schematic diagram of the three-dimensional appearance of the fourth embodiment of the present invention.

In summary of the above technical features, the main effects of the tire with multiple treads of the present invention can be clearly presented in the following embodiments with drawings.

It should be noted that the same constituent elements shown in the drawings will be represented by the same or similar symbols as much as possible. In addition, in order to highlight the point of the present invention, related elements will be exaggerated, omitted, or represented schematically.

Please refer to the first figure, which discloses a tire (100) having a plurality of treads according to the first embodiment of the present invention. In this embodiment, it is applied to a non-pneumatic tire as an example, but it is not This is the limit. The tire (100) includes a first tread (1) and a second tread (2) [the first tread (1) and the second tread (2) may also be simply referred to as plural treads] The second tread (2) is connected to the first tread (1). The first tread (1) and the second tread (2) are both disposed on an outer layer (31) of a carcass (3), and may both be provided by a single tread gel. The carcass (3) includes an inner surface (32), an axle connecting portion (33), and an elastic support portion (34). The inner surface (32) is located inside the outer layer (31), and the elastic support portion (34) ) Is located inside Between the surface (32) and the axle connecting portion (33), and the elastic supporting portion (34) is connected to the inner surface (32), the elastic supporting portion (34) includes a plurality of elastic hollow supporting bodies (341).

Continued to refer to the second figure, the tread patterns of the first tread (1) and the aforementioned second tread (2) may be the same or different from each other, depending on user requirements. When the tread patterns of the first tread (1) and the second tread (2) are different from each other, the first tread (1) and the second tread (2) can be gripped and lowered. Noise, drainage, or row of stones differ in performance. However, the implementation is not limited to this. The first tread (1) and the aforementioned second tread (2) may also be performance changes caused by material properties such as hardness and abrasion resistance, and are not limited to tread patterns. Change. Similarly, the first tread (1) and the aforementioned second tread (2) may have the same performance, and are not limited to being different from each other, depending on user requirements.

In detail, the tire (100) has a first sidewall (11) and a second sidewall (21), and the second sidewall (21) is opposite to the first sidewall (11). The first tread (1) and the second tread (2) are located between the first sidewall (11) and the second sidewall (21). A main groove (G) may be formed between the first tread (1) and the second tread (2). The aforementioned second tread (2) faces away from the first tread (1), and may gradually extend with different curvatures, so that the tire (100) as a whole has an asymmetrical shape (such as a hemisphere shape), so that the The diameter width (S1) of the first sidewall (11) and the diameter width (S2) of the second sidewall (21) are different. The first tread (1) has a first tread width (T1) in the axial direction (L), and the first tread width (T1) may be the first sidewall (11) and the main groove (G). ) In the center, and the second tread (2) has a second tread width (T2) in the axial direction (L), and the second tread width (T2) may be the second sidewall (21) The distance from the center of the main groove (G), the second tread width (T2) is larger than the first tread width (T1), for example, about 0.5T1 <T2 <2T1. Here, an X-axis can be defined along the horizontal plane, and a Y-axis can be defined along the second sidewall (21). When the angle (θ) between the Y-axis and the X-axis is approximately 90 degrees, it is The first tread (1) contacts the ground, and because the contact area of the first tread (1) is relatively small, the tire (100) can have the smallest rolling resistance. Continuing, please refer to the third figure. When the X axis and the Y axis are relatively changed, the second tread (2) which is relatively larger than the first tread (1) will contact the ground because the contact surface The product becomes larger, so that the tire (100) can have a large rolling resistance. If both the first tread (1) and the second tread (2) contact the ground at the same time, the tire (100) can have the maximum rolling resistance.

Continued to refer to FIGS. 4A and 4B. The elastic supporting portion (34) has at least one layer in an axial direction (R). In this embodiment, the elastic supporting portion (34) may be along the axial direction. (R) A plurality of layers are continuously provided to consolidate tire strength with a laminated structure. Each layer of the aforementioned elastic supporting portion (34) has a thickness (D) corresponding to the axial direction (R) and an extension direction of the thickness (D). Between 6% and 16%, between 8% and 14% or more, the thickness (D) can be changed to adapt to the conditions of different road surfaces. However, the elastic support of the multiple layers (34 ) Can also be integrally formed, and is not limited to multiple layers. In addition, the elastic support portions (34) of each layer can be the same or staggered and overlapped [can be shown in Figure 4B. The position of the elastic hollow support body (341) and the elastic hollow support body (341) of the inner layer are staggered from each other]. The plurality of elastic hollow support bodies (341) of the elastic support portion (34) may be radially distributed, and the size of the plurality of elastic hollow support bodies (341) may be from the axle connecting portion (33) to the inner surface ( 32), the structural strength of the elastic supporting portion (34) is gradually increased from the outside to the inside.

For use, please continue to refer to the fifth figure. The tires (100) can be arranged in pairs on a car body (A), and both can contact the ground with the aforementioned first tread (1) because the contact area They are all the smallest, so that each of the tires (100) can have the smallest rolling resistance, which is suitable for the use situation of high-speed driving. Continue to refer to the sixth and seventh figures, both of which can touch the ground with the aforementioned second tread (2), because the contact area is the largest, so each of the tires (100) can have the greatest rolling resistance , And can provide maximum grip, suitable for low speed and high torque applications. Continuing, please refer to the eighth figure, when the vehicle body (A) makes a turn, part of the tire (100) can be changed to contact the ground with the second tread (2), and part of the tire (100) ) Still maintain contact with the ground with the aforementioned first tread (1) to provide proper grip. Continuing, please refer to the ninth figure, when the vehicle body (A) is traveling on a rough road, each Both the first tread (1) and the second tread (2) of the tire (100) have a chance to be used to contact the ground at the same time, thereby further improving the grip.

Please refer to the tenth figure for the second embodiment of the present invention. The main difference is that it further includes a rim (4B). In detail, a carcass (3B) is mounted on the rim (4B), and an elastic support portion (34B) of the carcass (3B) is connected to the inner surface (32B) and contacts the rim (4B). From this, it can be known that rims can also be used in practice.

Continuing to refer to the eleventh figure, the third embodiment of the present invention is disclosed, which is substantially the same as the first embodiment and includes a first tread (1C) and a second tread connected to the first tread (1C). (2C), the aforementioned second tread (2C) is gradually extended in a direction away from the first tread (1C), so that the entire tire (100C) presents an asymmetric shape, and the main difference from the first embodiment is that : The second sidewall (21C) has an extension portion (22C), and the extension portion (22C) has a protruding arc shape, so that the overall shape of the tire (100C) is closer to a hemispherical shape.

Continuing to refer to the twelfth figure, the fourth embodiment of the present invention is disclosed, which is substantially the same as the first embodiment and includes a first tread (1D) and a second tread connected to the first tread (1D). (2D), the second tread (2D) is gradually extended in a direction away from the first tread (1D), so that the tire (100D) presents an asymmetric shape as a whole, and the main difference from the first embodiment is that : The tire (100D) may not have an elastic support portion inside, but may be hollow, as long as the tire (100D) is combined with a material with sufficient strength (for example, a high-strength alloy) or is wrapped around a large-diameter wheel frame.

Based on the description of the above embodiments, the operation, use and effects of the present invention can be fully understood, but the above-mentioned embodiments are only preferred embodiments of the present invention, and the implementation of the present invention cannot be limited in this way. The scope, that is, the simple equivalent changes and modifications made according to the scope of the patent application and the description of the invention, are all within the scope of the present invention.

Claims (14)

A tire having a plurality of treads includes a first tread and at least a second tread, the first tread has a first tread width T1 in the axial direction, and the second tread is connected to the first tread, The second tread has a second tread width T2 in the axial direction, 0.5T1 <T2 <2T1, and the second tread gradually extends with different curvatures toward a direction away from the first tread, wherein the first tread The tread and the aforementioned second tread are both disposed on an outer layer of a carcass. The carcass includes an inner surface and an elastic support portion connected to the inner surface. The elastic support portion includes a plurality of elasticity. The hollow support body, the elastic support portion is continuously provided with a plurality of layers along the axial direction, and the aforementioned elastic support portions of each layer have the same or staggered overlap. According to the tire having a plurality of treads as described in item 1 of the scope of the patent application, the treads of the first tread and the aforementioned second tread are the same or different from each other. According to the tire having a plurality of treads as described in item 1 of the scope of the patent application, the performances of the first tread and the aforementioned second tread are the same or different from each other. According to the tire having a plurality of treads described in item 1 of the scope of patent application, wherein the first tread and the aforementioned second tread are each provided by a single tread gel. The tire having a plurality of treads as described in item 1 of the scope of the patent application, wherein the second tread width T2 is larger than the first tread width T1. The tire having a plurality of treads as described in item 1 of the scope of the patent application, wherein the plurality of elastic hollow support bodies are distributed radially in a ring shape. The tire having a plurality of treads according to item 6 of the scope of the patent application, wherein the size of the plurality of elastic hollow support bodies increases toward the inner surface. According to the tire with a plurality of treads described in item 7 of the scope of the patent application, the thickness of the elastic supporting portion is between 1% and 20% of (T1 + T2). The tire having a plurality of treads as described in item 7 of the scope of the patent application, wherein the thickness of the elastic supporting portion is between 6% and 16% of (T1 + T2). The tire having a plurality of treads as described in item 7 of the scope of the patent application, wherein the thickness of the elastic supporting portion is between 8% and 14% of (T1 + T2). The tire having a plurality of treads as described in item 1 of the scope of patent application, further includes a rim, and the carcass is mounted on the rim. The tire having a plurality of treads according to item 1 of the scope of the patent application, wherein the tire is hemispherical to change the rolling resistance by selecting the first tread or / and the second tread to contact the ground. The tire having a plurality of treads according to item 1 of the scope of patent application, wherein the tire is hollow. A tire having a plurality of treads includes a first tread and at least a second tread, the first tread has a first tread width in an axial direction, and the second tread is connected to the first tread, and The second tread has a second tread width in the axial direction, and the second tread gradually extends with different curvatures toward a direction away from the first tread, wherein the first tread and the second tread are both It is arranged on an outer layer of a carcass. The carcass includes an inner surface and an elastic support portion, and the elastic support portion is connected to the inner surface. The elastic support portion includes a plurality of elastic hollow support bodies. A plurality of layers are continuously arranged in the axial direction, and the aforementioned elastic support portions of each layer have the same or staggered overlap.