Inner tube and wheel using pot-type vulcanization and design method thereof

Abstract

The present invention discloses an inner tube and wheel using vulcanization tanks, and a design method thereof. The inner tube includes an inner circumference and an outer circumference; the inner tube includes a first state in which it is stacked flat and a second state in which it is inflated. When the inner tube is in the first state, the inner tube has a width of a first length L1, and a ratio of the inner circumference thickness to the outer circumference thickness is greater than or equal to 1.1 and less than or equal to 3. When the inner tube is in the second state, the ratio of the outer circumference of the inner tube's radial cross section to the first length L1 is greater than or equal to 1.96 and less than or equal to 2. The difference L2 between the inner tube's outer diameter and the inner diameter of the tread is greater than or equal to 5 mm and less than or equal to 10 mm. The ratio L3 between the inner tube's inner diameter and the contact diameter of the rim and the rim flange height is greater than or equal to 3 and less than or equal to 5. The wheel includes a rim, a tire, and the inner tube. The tire includes a tread, and a space for accommodating the inner tube is formed between the tread and the rim. The design method is applicable to the aforementioned wheel. With the above-mentioned configuration, the damage rate and cost of the inner tube are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle tire manufacturing, in particular to an inner tube and a wheel adopting pot-type vulcanization and a design method thereof. Background Art

[0002] Tires are one of the important components of a vehicle. They are used to carry the vehicle and its weight, mitigate the impact caused by the vehicle's driving, ensure good adhesion between the wheels and the road, and improve the vehicle's traction, braking and passability.

[0003] In current tire production, inner tube vulcanization involves either mold vulcanization or pot vulcanization. Pot vulcanization significantly reduces production costs and improves efficiency compared to mold vulcanization. However, pot vulcanization often results in inner tube pinching during assembly to the tire and rim, leading to damage. Furthermore, after assembly, the inner tube often folds on the inner or outer circumference, leading to premature failure during use. Summary of the Invention

[0004] To address the deficiencies of the prior art, the present invention provides an inner tube and wheel using a vulcanization pot, and a design method thereof. These methods can prevent the inner tube from being pinched or folded when assembled to a tire or rim, thereby reducing the risk of tire inner tube damage.

[0005] Based on the above purpose, the present invention adopts the following technical solutions:

[0006] An inner tube vulcanized in a tank comprises: an inner circumference and an outer circumference; the inner tube comprises a first state in which it is stacked flat and a second state in which it is inflated for use; when the inner tube is in the first state, the width of the inner tube is a first length L1, and the ratio of the inner circumference thickness L4 to the outer circumference thickness L5 is greater than or equal to 1.1 and less than or equal to 3; when the inner tube is in the second state, the inner tube is at least partially disposed between the crown and the rim, and the ratio of the outer circumference of the radial cross section of the inner tube to the first length L1 is greater than or equal to 1.96 and less than or equal to 2; the difference L2 between the outer diameter of the inner tube and the inner diameter of the crown is greater than or equal to -5 mm and less than or equal to 10 mm; the ratio L3 between the difference L3 between the inner diameter of the inner tube and the contact diameter of the rim and the height of the rim is greater than or equal to 3 and less than or equal to 5.

[0007] Furthermore, a difference L3 between the inner diameter of the inner tube and the contact diameter of the rim is greater than or equal to 15 mm and less than or equal to 80 mm.

[0008] Furthermore, a valve is provided on the inner circumference for connecting the inside and outside of the inner tube.

[0009] Furthermore, the thickness L4 of the inner periphery is greater than or equal to 1.6 mm and less than or equal to 1.7 mm; the thickness L5 of the outer periphery is greater than or equal to 1.2 mm and less than or equal to 1.3 mm.

[0010] A wheel for an electric vehicle or motorcycle comprises a rim, an outer tire and the inner tire. The outer tire is at least partially sleeved on the rim. The outer tire comprises a crown. An accommodating space is formed between the crown and the rim. The inner tire is at least partially arranged in the accommodating space.

[0011] A design method, applicable to the above tire, comprises the steps of:

[0012] S1. According to the national standard GB / T2983 Motorcycle Tire Series, the outer diameters of 2.75-18 and 3.00-18 motorcycle tires are 613mm and 627mm, respectively. To ensure that the inner tube is compatible with both 2.75-18 and 3.00-18 tire sizes, the outer diameter of the outer tire is set to be greater than or equal to 615mm and less than or equal to 625mm.

[0013] S2. Based on the outer diameter of the tire and the thickness of the crown, confirm that the inner diameter of the crown is greater than or equal to 585 mm and less than or equal to 595 mm;

[0014] S3. Set the difference between the inner tube outer diameter and the crown inner diameter to be greater than or equal to -5 mm and less than or equal to 10 mm. Based on the size of the crown inner diameter, set the inner tube outer diameter to be greater than or equal to 585 mm and less than or equal to 595 mm.

[0015] S4. According to the national standard "GB / T13202 Motorcycle Rim Series," the rim contact diameter for WM-type 18-inch motorcycles corresponding to 2.75-18 and 3.00-18 motorcycle tires is 458.7mm; the rim flange height is greater than or equal to 5mm and less than or equal to 16mm; the difference between the inner tube diameter and the rim contact diameter is set to 3 to 5 times the rim flange height, and the inner tube inner diameter is set to greater than or equal to 473mm and less than or equal to 538mm;

[0016] S5. Determine, based on the inner diameter and outer diameter of the inner tube, that the center diameter of the inner tube is greater than or equal to 529 mm and less than or equal to 579 mm, and that the length of the inner tube in the first state is greater than or equal to 795 mm and less than or equal to 965 mm, and the width is greater than or equal to 49 mm and less than or equal to 59 mm;

[0017] S6. Set the ratio of the inner circumference thickness to the outer circumference thickness to be greater than or equal to 1.1 and less than or equal to 3. Based on the cost-effectiveness of the inner tube, set the inner circumference thickness to be greater than or equal to 1.6 mm and less than or equal to 1.7 mm, and set the outer circumference thickness to be greater than or equal to 1.2 mm and less than or equal to 1.3 mm.

[0018] The present invention provides an inner tube, wheel, and design method thereof using a vulcanization pot. The ratio of the inner circumference thickness to the outer circumference thickness of the inner tube in the flattened state is set to be greater than or equal to 1.1 and less than or equal to 3. This prevents the inner or outer circumference from buckling during use, thereby reducing the early damage rate of the tire inner tube. Furthermore, when the tire is inflated, under this design, the difference between the inner tube outer diameter and the crown inner diameter is greater than or equal to -5 mm and less than or equal to 10 mm, and the ratio of the difference between the inner tube inner diameter and the rim contact diameter to the rim flange height is greater than or equal to 3 and less than or equal to 5. This prevents tire pinching within the inner tube's inner circumference and reduces the tire damage rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a radial cross-sectional view of a wheel provided according to the present invention;

[0020] Figure 2 Schematic diagram of an inner tube provided according to the present invention in a first state. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1 and Figure 2 As shown, this embodiment provides a wheel for an electric vehicle or motorcycle. The wheel includes a rim 11, a tire 12, and an inner tube 13 vulcanized using a vulcanization pot. Specifically, the tire 12 is at least partially mounted on the rim 11 and includes a tread 121. A receiving space 100 is formed between the tread 121 and the rim 11. The inner tube 13 includes an inner circumference 131 and an outer circumference 132. The inner tube 13 can be placed flat in a first state and inflated in a second state. When the inner tube 13 is in the first state, the width of the inner tube 13 is a first length L1, and the ratio of the thickness L4 of the inner circumference 131 to the thickness L5 of the outer circumference 132 is greater than or equal to 1.1 and less than or equal to 3. This prevents the inner circumference 131 or the outer circumference 132 from buckling during use, thereby reducing the risk of premature failure of the tire inner tube 13. When the inner tube 13 is in the second state, the inner tube 13 is at least partially positioned between the tread 121 and the rim 11. More specifically, the inner tube 13 is positioned within the receiving space 100. The ratio of the outer circumference of the radial cross section of the inner tube 13 to the first length L1 is greater than or equal to 1.96 and less than or equal to 2. Figure 1The circumference of center circle A. The difference L2 between the outer diameter of inner tube 13 and the inner diameter of crown 121 is greater than or equal to -5 mm and less than or equal to 10 mm. When the difference L2 between the outer diameter of inner tube 13 and the inner diameter of crown 121 is greater than or equal to -5 mm and less than or equal to 0, outer circumference 132 of inner tube 13 is in contact with the inner wall of crown 121. The ratio of the difference L3 between the inner diameter of inner tube 13 and the contact diameter of rim 11 to the rim height of rim 11 is greater than or equal to 3 and less than or equal to 5. This configuration prevents tire pinching at inner circumference 131 of inner tube 13 during assembly, reducing tire damage.

[0023] More specifically, the difference L3 between the inner diameter of the inner tube 13 and the contact diameter of the rim 11 is greater than or equal to 15 mm and less than or equal to 80 mm to avoid tire pinching at the inner circumference 131 of the inner tube 13 during tire assembly.

[0024] Furthermore, a valve 133 is provided on the inner circumference 131, connecting the interior and exterior of the inner tube 13. The thickness L4 of the inner circumference 131 is greater than or equal to 1.6 mm and less than or equal to 1.7 mm. The thickness L5 of the outer circumference 132 is greater than or equal to 1.2 mm and less than or equal to 1.3 mm. This arrangement prevents the inner circumference 131 and outer circumference 132 of the inner tube 13 from buckling during tire assembly, thereby reducing the risk of premature tire damage. It also prevents the valve 133 from tilting upward or outward when the inner tube 13 is inflated alone, improving the structural stability of the inner tube 13.

[0025] Furthermore, in this application, the inner tube 13 is vulcanized using a tank vulcanization process. Compared to shaped disc vulcanization or tire-on-tire vulcanization, the inner tube 13 does not experience detachment, thinness, or cracking of the rubber pad, and the inner circumference 131 or outer circumference 132 does not sag, collapse, twist, or deform, thereby improving the structural stability of the inner tube 13. Furthermore, the use of a tank vulcanization process facilitates mass production of the inner tube 13 and can increase the vulcanization space rate by over 45%.

[0026] This application also provides a design method applicable to the above tire, which specifically includes the following steps:

[0027] S1. According to the national standard GB / T2983 Motorcycle Tire Series, the outer diameters of 2.75-18 and 3.00-18 motorcycle tires are 613 mm and 627 mm, respectively. To make the inner tube 13 compatible with both 2.75-18 and 3.00-18 tires, the outer diameter of the outer tube 12 is set to be greater than or equal to 615 mm and less than or equal to 625 mm.

[0028] S2. Confirming that the inner diameter of the tread crown 121 is greater than or equal to 585 mm and less than or equal to 595 mm based on the outer diameter of the tire 12 and the thickness of the tread crown 121;

[0029] S3. Set the difference between the outer diameter of the inner tube 13 and the inner diameter of the crown 121 to be greater than or equal to -5 mm and less than or equal to 10 mm. Based on the inner diameter of the crown 121, set the outer diameter of the inner tube 13 to be greater than or equal to 585 mm and less than or equal to 595 mm.

[0030] S4. According to the national standard "GB / T13202 Series of Motorcycle Rim 11," the rim 11 of a WM-type 18-inch motorcycle corresponding to the 2.75-18 and 3.00-18 motorcycle outer tires 12 has a contact diameter of 458.7 mm. The rim height of the rim 11 is greater than or equal to 5 mm and less than or equal to 16 mm. The difference between the inner diameter of the inner tube 13 and the contact diameter of the rim 11 is set to 3 to 5 times the rim height of the rim 11, and the inner diameter of the inner tube 13 is set to be greater than or equal to 473 mm and less than or equal to 538 mm.

[0031] S5. Determine, based on the inner diameter and outer diameter of the inner tube 13, that the central diameter of the inner tube 13 is greater than or equal to 529 mm and less than or equal to 579 mm, and that the length of the inner tube 13 in the first state is greater than or equal to 795 mm and less than or equal to 965 mm, and the width is greater than or equal to 49 mm and less than or equal to 59 mm;

[0032] S6. Set the ratio of the thickness of the inner circumference 131 to the thickness of the outer circumference 132 to be greater than or equal to 1.1 and less than or equal to 3. According to the cost-effectiveness of the inner tube 13, set the thickness of the inner circumference 131 to be greater than or equal to 1.6 mm and less than or equal to 1.7 mm, and set the thickness of the outer circumference 132 to be greater than or equal to 1.2 mm and less than or equal to 1.3 mm.

[0033] The above is a description of the embodiments of the present invention. The above description of the disclosed embodiments will enable professionals in the field to implement or use the present invention. Various modifications to these embodiments will be apparent to professionals in the field. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An inner tube using tank vulcanization, characterized in that: include: An inner circumference (131) and an outer circumference (132); the inner tube (13) includes a first state of being stacked and placed flat and a second state of being inflated and used; when the inner tube (13) is in the first state, the width of the inner tube (13) is a first length L1, and the ratio of the thickness L4 of the inner circumference (131) to the thickness L5 of the outer circumference (132) is greater than or equal to 1.1 and less than or equal to 3; when the inner tube (13) is in the second state, the inner tube (13) is at least partially arranged on the crown ( 121) and the rim (11), the ratio of the outer circumference of the radial cross section of the inner tube (13) to the first length L1 is greater than or equal to 1.96 and less than or equal to 2; the difference L2 between the outer diameter of the inner tube (13) and the inner diameter of the crown (121) is greater than or equal to -5 mm and less than or equal to 10 mm; the ratio L3 between the difference L3 between the inner diameter of the inner tube (13) and the contact diameter of the rim (11) and the height of the rim (11) is greater than or equal to 3 and less than or equal to 5.

2. The inner tube vulcanized by tank vulcanization as claimed in claim 1, characterized in that: The difference L3 between the inner diameter of the inner tube (13) and the contact diameter of the rim (11) is greater than or equal to 15 mm and less than or equal to 80 mm.

3. The inner tube vulcanized by pot vulcanization as claimed in claim 1, characterized in that: The inner circumference (131) is provided with a valve (133) for connecting the inside and outside of the inner tube (13).

4. The inner tube vulcanized by pot vulcanization as claimed in claim 1, characterized in that: The thickness L4 of the inner periphery (131) is greater than or equal to 1.6 mm and less than or equal to 1.7 mm; the thickness L5 of the outer periphery (132) is greater than or equal to 1.2 mm and less than or equal to 1.3 mm.

5. A wheel for an electric vehicle or motorcycle, characterized in that: include: Rim (11); A tire (12), the tire (12) being at least partially sleeved on the rim (11), the tire (12) comprising a tire crown (121), and an accommodating space (100) being formed between the tire crown (121) and the wheel rim (11); And an inner tube (13) according to any one of claims 1 to 4, arranged in the accommodating space (100).

6. A design method, applicable to the wheel of an electric vehicle or motorcycle according to claim 5, characterized in that: Including steps: S1. According to the national standard GB / T2983 Motorcycle Tire Series, the outer diameters of motorcycle tires 2.75-18 and 3.00-18 are 613 mm and 627 mm respectively. In order to make the inner tube (13) applicable to tires of both sizes 2.75-18 and 3.00-18, the outer diameter of the outer tube (12) is set to be greater than or equal to 615 mm and less than or equal to 625 mm. S2, confirming that the inner diameter of the tread (121) is greater than or equal to 585 mm and less than or equal to 595 mm based on the outer diameter of the tire (12) and the thickness of the tread (121); S3, setting the difference between the outer diameter of the inner tube (13) and the inner diameter of the crown (121) to be greater than or equal to -5 mm and less than or equal to 10 mm, and setting the outer diameter of the inner tube (13) to be greater than or equal to 585 mm and less than or equal to 595 mm according to the size of the inner diameter of the crown (121); S4. According to the national standard GB / T13202 Motorcycle Rim (11) Series, the rim (11) of the WM type 18-inch motorcycle corresponding to the 2.75-18 and 3.00-18 motorcycle outer tires (12) has a contact diameter of 458.7 mm; the rim (11) has a height greater than or equal to 5 mm and less than or equal to 16 mm; the difference between the inner diameter of the inner tube (13) and the contact diameter of the rim (11) is set to 3 to 5 times the rim (11) height, and the inner diameter of the inner tube (13) is set to be greater than or equal to 473 mm and less than or equal to 538 mm; S5. According to the inner diameter and outer diameter of the inner tube (13), the center diameter of the inner tube (13) is determined to be greater than or equal to 529 mm and less than or equal to 579 mm, and the length of the inner tube (13) in the first state is greater than or equal to 795 mm and less than or equal to 965 mm, and the width is greater than or equal to 49 mm and less than or equal to 59 mm; S6. Set the ratio of the thickness of the inner circumference (131) to the thickness of the outer circumference (132) to be greater than or equal to 1.1 and less than or equal to 3. According to the cost-effectiveness of the inner tube (13), set the thickness of the inner circumference (131) to be greater than or equal to 1.6 mm and less than or equal to 1.7 mm, and set the thickness of the outer circumference (132) to be greater than or equal to 1.2 mm and less than or equal to 1.3 mm.

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