Hollow tire with a valve

Abstract

The present invention discloses a hollow tire with a valve, comprising two parts, namely a casing (1) and a valve (2); wherein the valve (2) is integrated into the casing (1), the valve (2) is a rubber cushion valve, a rubber valve seat (5) and the casing (1) of the hollow tire are bonded together by a rubber vulcanization process to ensure airtightness, and the valve body (6) is concealed within the casing (1) of the hollow tire and can be positioned at any location on a cross-section of the casing (1) of the hollow tire. According to the present invention, a valve (2) is provided on the hollow tire, which allows for filling with high-pressure gas, improving load capacity and damping performance, as well as the tire's lifespan. Figure to be published with the abbreviation: FIG. 2

Description

Title of the invention: Hollow tire with a valve Technical field of the invention

[0001] The present invention relates to the field of tires, and more particularly to a hollow tire equipped with a valve. Previous technique

[0002] A tire is an elastic rubber product that rolls on the ground, mounted on various vehicles or machines, and has the capacity to support loads, absorb impacts from the road surface, make contact with the road surface, and provide driving and braking force. It is subjected to various deformations, loads, forces, and high and low temperatures during driving; therefore, it must have high performance in terms of load-bearing capacity, traction, and damping.

[0003] Tire technology has also evolved since Dunlop invented the pneumatic tire more than 100 years ago. Traditional pneumatic tires are supported by high-pressure air, offer very good comfort, good cushioning, and are suitable for high-speed driving, but they have drawbacks such as ease of puncture, slow leakage, and the need to be inflated on time.

[0004] In recent years, with the development of electric bicycles, scooters, and other slow-moving, short-distance vehicles, particularly shared electric bicycles and shared bikes, and due to poor road conditions, some vehicles use solid tires, hollow tires, and other non-pneumatic tires to avoid the problem of punctures. These types of tires are not supported by air, and the various deformations and loads during riding are borne by the tire casing material, making them easily damaged. To increase load capacity, a stronger and harder tire casing is required, which further reduces the tire's comfort and makes it heavier.However, in order to comply with regulatory requirements or to achieve greater range, electric bicycles and shared electric bicycles are subject to lightweight design requirements, which necessitate strict control over tire weight, frame dimensions, and other factors. Since existing technology struggles to meet the aforementioned performance requirements, it is therefore necessary to improve tire structure and invent a tire that balances load capacity, comfort, range, and ease of maintenance. Description of the invention

[0005] In order to solve the aforementioned problems, the present invention aims to provide a hollow tire with a valve, which improves load capacity by filling the hollow tire with high-pressure air, can reduce the hardness and resistance of the hollow tire carcass, and improves comfort and tire life.

[0006] To this end, the present invention adopts the following technical solution:

[0007] The present invention proposes a hollow tire with a valve, which comprises two parts, namely a carcass and a valve, in which the valve is integrated into the carcass.

[0008] Preferably in the present invention, the carcass can have different cross-section shapes as required, with internal bores in the cross-section shapes, and the carcass can be a tire casing with a pattern for use in direct contact with the road surface or an inner tube without a pattern.

[0009] Preferably in the present invention, one, two or more internal bores are provided.

[0010] Preferably in the present invention, in order to ensure airtightness and resistance to perforation, the thickness of the outer wall is not less than 5 mm.

[0011] Preferably in the present invention, the valve is a rubber cushion valve, which comprises a rubber valve seat, a valve body and a valve core, a rubber valve seat and the carcass of the hollow tire are bonded together by a rubber vulcanization process to ensure airtightness, and the valve body is hidden inside the carcass of the hollow tire and can be disposed in any position on a cross-section of the carcass of the hollow tire.

[0012] The beneficial effects of the present invention are as follows: compared to ordinary hollow tires, according to the present invention, a valve is provided on the hollow tire, which allows for filling with high-pressure gas, improving load capacity and damping performance, as well as the tire's lifespan. Furthermore, the thickness of the casing itself ensures airtightness and puncture resistance, preventing punctures and air leakage during use, thus resulting in a maintenance-free hollow tire. In addition, thanks to the integrated valve, the shape of the hollow tire is the same as that of an ordinary hollow tire, which does not affect mounting. Brief description of the figures

[0013] Fig. 1 represents a diagram of the structure of a hollow tire with a valve according to the present invention.

[0014] Figure [Fig. 2] represents a schematic diagram I of the structure in cross-section AA according to the present invention.

[0015] [Fig.3] represents a diagram II of the structure in section AA according to the present invention.

[0016] Figure 4 represents a schematic diagram III of the structure in section AA according to the present invention.

[0017] Fig. 5 represents a diagram of the cross-sectional structure of a valve core of the hollow tire equipped with a valve according to the present invention.

[0018] Figure 6 represents a diagram of the cross-sectional structure of a valve of the hollow tire equipped with a valve according to the present invention. References

[0019] 1-Carcass

[0020] 2-Valve

[0021] 3-Internal bore

[0022] 4-Outer wall

[0023] 5-Valve rubber seat

[0024] 6-Valve body

[0025] 7-Valve core

[0026] 8-Shell stem

[0027] 9-Assembly thread

[0028] 10-Shell Cap

[0029] 11-Sealing gasket

[0030] 12-Spring

[0031] 13-Shell body

[0032] 14-Sealing cushion

[0033] 15-Shell seat

[0034] 16-Valve shell cavity

[0035] 17-Sealing bevel Description of the implementation methods

[0036] In order to make the objective, the technical solution and the advantages of the present invention clearer, the implementations of the present invention will be described in detail below in connection with the figures and embodiments, so that the process of realizing how the present invention applies the technical means to solve the technical problems and obtain the technical effects can be fully understood and implemented accordingly.

[0037] Many specific details are set forth in the following description to facilitate a complete understanding of the present invention; however, the present The invention can also be implemented in a manner different from that described herein and, consequently, the scope of protection of the present invention is not limited by the specific embodiments disclosed below.

[0038] The embodiments are described in detail below in connection with the figures.

[0039] As shown in [Fig. 1] to 5, the present embodiment provides a tire A hollow tire with a valve, comprising two parts: a casing 1 and a valve 2. The valve 2 is integrated into the casing 1. The casing 1 can have various cross-sectional shapes as required, with internal bores 3 within these cross-sectional shapes. The casing 1 can be a tire casing with a tread pattern for direct contact with the road surface or an inner tube without a tread pattern. The internal bore 3 is primarily used for shock absorption and weight reduction to improve comfort and reduce energy consumption. One, two, or more internal bores can be provided depending on design requirements related to vehicle load, speed, operating environment, etc.

[0040] Preferably in this embodiment, to ensure airtightness and puncture resistance, the thickness of the outer wall 4 is not less than 5 mm. The casing material 1 is vulcanized rubber, and the formula simultaneously uses a high-cis cis-polybutadiene rubber, a natural rubber, a TPI, and a brominated butyl rubber, as well as a rubber reinforcing agent made of polyester fibers, so that the rubber material simultaneously possesses the properties of low heat generation, good anti-fatigue, good hardness, high support, good air retention, etc. Airtightness is tested according to GB / T1038.Compared to ordinary hollow tires, the measured gas permeability coefficient of the carcass material according to the present invention is 3.08 x 10¹³ cm³-cm / cm²-s-Pa, and that of ordinary rubber is 5.71 x 10¹³ cm³-cm / cm²-s-Pa, the permeability rate is reduced by 46%, which ensures good airtightness and does not require frequent maintenance.

[0041] Preferably in the present embodiment, the valve 2 is a rubber cushion valve, which includes a rubber valve seat 5, a valve body 6 and a valve core 7, a rubber valve seat 5 and the carcass 1 of the hollow tire are bonded together by a rubber vulcanization process to ensure airtightness, the valve body 6 is hidden inside the carcass of the hollow tire and can be disposed at any position on a cross-section of the carcass of the hollow tire, and the valve core 7 is disposed inside the valve body 6.

[0042] Preferably in the present embodiment, the valve core 7 comprises a core stem 8, an assembly thread 9, a core cap 10, a sealing gasket 11, a spring 12, a core body 13, a sealing cushion 14 and a core seat 15, in which the spring 12 is disposed on the core stem 8, the assembly thread 9 is disposed on the core cap 10, the sealing gasket 11 is disposed on the core body 13, and the sealing cushion 14 is disposed on the core seat 15.The valve body 6 is hollow; the hollow portion is called the valve core cavity 16. The valve core cavity 16 has assembly threads 9 and a sealing bevel 17 intended to cooperate with the valve core 7. The core stem 8 is oriented towards one end of the valve rubber seat 5. The core seat 15 is oriented towards one end of the valve body 6, and a beveled side of the valve rubber seat 5 is fitted against the carcass 1 of the hollow tire. The valve rubber seat 5 is bonded to the valve body 6 as a single unit by a rubber vulcanization process to ensure airtightness.

[0043] Compared to an ordinary valve, the valve core 8 stem of the valve core according to the present invention is oriented towards one end of the valve rubber seat 5, the valve core seat 15 is oriented towards one end of the valve body 6, a beveled side of the valve rubber seat 5 is fitted against the carcass 1 of the hollow tire, and the valve body 6 is fully integrated into the carcass 1 of the hollow tire, and the valve 2 and the carcass 1 of the hollow tire are bonded as a whole by the rubber vulcanization process to ensure airtightness. With regard to the ordinary valve, the valve core stem is oriented towards one end of the valve body, and the valve core seat is oriented towards one end of the valve rubber seat, and the lower plane of the valve rubber seat is glued to the carcass of the hollow tire during use, and the valve protrudes out of the carcass of the hollow tire.When designing the rim and the vehicle structure, it is necessary to consider the influence of the valve body position, and to have a corresponding valve hole on the rim and to avoid any collision with the valve protruding from the rim when the wheel rotates.

[0044] The test results on the product are as follows:

[0045] 1. High-speed test of the wheel / tire combination

[0046] Perform tests according to GBT 13203-2014 Chapter 5.4, with a drum diameter of 1700 ± 17 mm on the test machine. The tire must be mounted on the hub corresponding to the actual model of the vehicle being tested, with a load conforming to the tire specification. The preview phase is carried out at a speed of 40 km / h for a duration of 120 minutes, and the specified speed must be reached within 5 minutes. After completion of the preview phase, allow the tires to cool to 38 ± 3 °C and perform the acceleration section The test will be performed in sections. Phase 1: driving speed of 50 km / h, driving time of 60 minutes; Phase 2: driving speed of 60 km / h, driving time of 60 minutes; Phase 3: driving speed of 70 km / h, driving time of 60 minutes. The time required to change speed in each phase must not exceed 1 minute (excluding the preview phase). After the test, the tire must not show any separation, broken hub, visible cracks, internal cracks, or internal burns.

[0047] 2. Fatigue test of the wheel / tire combination

[0048] Perform tests according to ISO 4210-7 Chapter 4.1. With a load conforming to the tire specification, the tire is subjected to impact with the obstacle block 1,000,000 times at a speed of 25 km / h (±10%). After the test, the tire must not exhibit any separation, broken wheel, visible cracks, internal cracks, or internal burns when the tire is cut open.

[0049] With regard more specifically to the verification of a 16 x 2.50 tire, for example, a load of 150 kg is used for the high-speed and fatigue tests. In the prior art, the product weighing 2,420 g is not damaged after being subjected to the high-speed and fatigue tests, but the product weighing 2,250 g exhibits internal burns after being subjected to the high-speed and fatigue tests. The product according to the present invention, weighing 2,230 g, is not damaged after being subjected to the high-speed and fatigue tests.It can be observed that the product of the prior art must meet performance requirements by increasing the material and improving the hardness of the casing, but this will at the same time reduce comfort and increase cost; however, the product according to the present invention has a significant advantage over the prior art, which, in the same situation, can achieve better performance with low heat generation, good anti-fatigue, good hardness, high support, and good air retention.

[0050] Although the present invention is described herein with reference to explanatory embodiments of the present invention, the above embodiments are only the best embodiments of the present invention, and the implementations of the present invention are not limited by the above embodiments. It is understood that a person skilled in the art can conceive of many other modifications and embodiments, which will fall within the principles and spirit of this application.

Claims

Demands

1. A hollow tire with a valve, characterized in that: it comprises two parts, namely a carcass (1) and a valve (2), in which the valve (2) is integrated into the carcass (1).

2. A hollow tire with a valve according to claim 1, characterized in that: the carcass (1) is provided with an internal bore (3).

3. A hollow tire with a valve according to claim 1, characterized in that: the casing (1) is a tire casing with a pattern or an inner tube without a pattern.

4. A hollow tire with a valve according to claim 2, characterized in that: one, two or more internal bores (3) are provided.

5. Hollow tire with a valve according to claim 1, characterized in that: an outer wall (4) of the casing (1) has a thickness of at least 5 mm.

6. A hollow tire with a valve according to claim 1, characterized in that: the valve (2) is a rubber cushion valve, which includes a valve rubber seat (5), a valve body (6) and a valve core (7), in which the valve rubber seat (5) and the carcass (1) of the hollow tire are bonded together by a rubber vulcanization process, the valve body (6) is hidden inside the carcass (1) of the hollow tire, and the valve core (7) is disposed inside the valve body (6).

7. A hollow tire having a valve according to claim 6, characterized in that: the valve core (7) comprises a core stem (8), an assembly thread (9), a core cap (10), a sealing gasket (11), a spring (12), a core body (13), a sealing cushion (14) and a core seat (15), in which the spring (12) is disposed on the core stem (8), the assembly thread (9) is disposed on the core cap (10), the sealing gasket (11) is disposed on the core body (13), and the sealing cushion (14) is disposed on the core seat (15).

8. A hollow tire having a valve according to claim 7, characterized in that: the valve body (6) is hollow, the hollow portion is called the valve core cavity (16), the valve core cavity (16) has the assembly thread (9) and a sealing bevel (17) intended to cooperate with the valve core (7), the core stem (8) is oriented towards one end of the rubber valve seat (5), the core seat (15) is oriented towards one end of the valve body (6), and a beveled side of the valve rubber seat (5) is fitted against the carcass (1).

9. A hollow tire with a valve according to any one of claims 1 to 8, characterized in that: the casing (1) is made of vulcanized rubber whose components include a high cis cis-polybutadiene rubber, a natural rubber, a TPI, a brominated butyl rubber, a rubber reinforcing agent, and the rubber reinforcing agent being made of polyester fibers.

10. Hollow tire with a valve according to claim 9, characterized in that: the gas permeability coefficient of the casing material (1) is not greater than 3.5 X 10 13 cm3-cm / cm2-s-Pa.

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