Anti-puncturing tire and vehicle

Abstract

The utility model discloses an anti-puncture tire and a vehicle, belongs to the technical field of tires, and aims to solve the problem that dynamic balance is affected by flowing of self-repairing glue in an existing anti-puncture tire, the anti-puncture tire comprises a rubber tire body (1) and a tire core (2), the rubber tire body (1) is sleeved on the outer side of the tire core (2), the tire core (2) is made of elastic closed-cell foaming materials, and the rubber tire body (1) is sleeved on the outer side of the tire core (2). An adhesive layer (3) is connected between the rubber tire body (1) and the tire core (2) in a matched manner. The tire cavity of the anti-puncture tire contains the tire core made of the elastic closed-cell foaming material, and the tire core can achieve the effects of thickening the tire wall and supporting the tire wall, so that the problem of air leakage when the side surface of the tire is punctured is solved.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, specifically to a puncture-proof tire or a vehicle. Background Technology

[0002] Existing tire puncture prevention technologies include Michelin's Selfseal technology and Continental's Contiseal technology, collectively known as self-sealing tires. The implementation of existing tire puncture prevention technologies usually involves spraying a layer of self-sealing adhesive (i.e., liquid self-sealing sealant) onto the inside of the tire to maintain the tire's airtightness after being punctured.

[0003] The existing tire puncture prevention technologies have the following drawbacks: 1. When the foreign object puncturing the tire is larger than 5 mm, there is still a chance of continued air leakage. 2. The self-sealing adhesive in self-sealing tires is usually only sprayed on the bottom of the tire; air leakage will still occur when the tire sidewall is punctured. 3. The self-sealing adhesive in self-sealing tires is a viscous liquid glue. When car tires are exposed to direct sunlight in summer and heat up, the self-sealing adhesive will flow, causing uneven distribution and affecting the tire's dynamic balance. Utility Model Content

[0004] To address the problem of air leakage when the sidewall of an existing tire is punctured, this invention provides a puncture-proof tire and vehicle. The puncture-proof tire contains an elastic closed-cell foam core within its cavity. This core thickens and supports the tire sidewall, thus solving the air leakage problem when the tire sidewall is punctured.

[0005] The technical solution adopted by this utility model embodiment to solve its technical problem is:

[0006] A puncture-resistant tire, comprising a rubber tire body and a tire core, wherein the rubber tire body is fitted over the outside of the tire core, the tire core is made of elastic closed-cell foam material, and an adhesive layer is matchedly connected between the rubber tire body and the tire core; the tire core comprises an inner core and an outer core with inner and outer layers respectively.

[0007] The outer casing contains two radially arranged semi-sleeves, both of which have C-shaped cross-sections; or, the outer casing contains two axially arranged semi-sleeves, both of which also have C-shaped cross-sections.

[0008] The adhesive layer is made of neoprene or polyurethane waterproof adhesive, and the thickness of the adhesive layer is 0.3mm to 1mm.

[0009] The inner core is harder than the outer shell.

[0010] The inner core is made of ethylene-vinyl acetate foam, and the outer shell is made of ETPU.

[0011] The inner core and outer shell are bonded and fixed together.

[0012] Multiple expansion joints are provided on the radial inner side of the inner core. The expansion joints are evenly spaced along the circumference of the inner core and extend radially along the inner core. The openings of the expansion joints face the axis of the inner core and the width of the expansion joints is 0mm to 1mm.

[0013] A vehicle comprising the aforementioned puncture-resistant tires.

[0014] The beneficial effects of this utility model embodiment are:

[0015] 1. The adhesive is appropriately filled between the rubber carcass and the core to bond and fix the rubber carcass and the core, resulting in better stability and avoiding the melting and flow of existing liquid self-healing sealants due to high temperatures.

[0016] 2. The tire core can thicken and support the tire sidewall, maintaining the tire's airtightness even when punctured by a larger foreign object, and solving the problem of air leakage when the tire sidewall is punctured.

[0017] 3. The tire core is made of elastic closed-cell foam material, which can make the tire quieter. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0019] Figure 1 This is a schematic diagram of the anti-puncture tire device described in Embodiment 1 of this utility model.

[0020] Figure 2 This is a schematic diagram of the anti-puncture tire device described in Embodiment 2 of this utility model.

[0021] Figure 3 It is a schematic diagram of two half-body structures arranged radially.

[0022] Figure 4 It is a schematic diagram of two half-sleeves arranged along the axial direction.

[0023] Figure 5 It is along Figure 2 Cross-sectional view along the EE direction.

[0024] Figure 6 This is a schematic diagram of the construction of an expansion joint.

[0025] The annotations in the attached figures are explained as follows:

[0026] 1. Rubber tire carcass; 2. Tire core; 3. Adhesive layer;

[0027] 11. Tire base; 12. Tire side;

[0028] 21. Inner core; 22. Outer shell;

[0029] 211. Radial inner side; 212. Expansion joint;

[0030] 221. Half-body. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] For ease of understanding and description, this utility model is described from the perspective of a reader or user; however, the aforementioned directional terms should not be construed as limiting the scope of protection of this utility model. Regarding the dimensions, angles, and parameters of the components, those skilled in the art can determine or replace them based on actual needs or a limited number of experiments.

[0033] Example 1

[0034] like Figure 1 As shown in the embodiment of this utility model, the puncture-proof tire is applicable to light-load tires, such as bicycle tires and electric vehicle tires.

[0035] The puncture-proof tire includes a rubber body 1 and a core 2. The rubber body 1 is fitted on the outside of the core 2. The core 2 is made of elastic closed-cell foam material. An adhesive layer 3 is matched and connected between the rubber body 1 and the core 2.

[0036] like Figure 1 As shown, the rubber tire body 1 contains a cavity (which can be called the tire cavity) and a sidewall. The tire core 2 is located inside the tire cavity of the rubber tire body. The tire core 2 can thicken and support the sidewall, and solve the problem of air leakage when the tire sidewall is punctured.

[0037] The rubber carcass 1 includes a base 11 and a sidewall 12. The core 2 is shaped to match the base 11 and the sidewall 12. The core 2 can support the base 11 and the sidewall 12. The adhesive layer 3 is located between the base 11 and the core 2 and between the sidewall 12 and the core 2.

[0038] The tire core 2 is made of existing elastic closed-cell foam material, and the adhesive layer 3 is made of existing adhesive. The function of the adhesive layer 3 is to bond and fix the rubber tire body 1 and the tire core 2.

[0039] In this embodiment, the adhesive layer 3 can be made of neoprene or polyurethane waterproof adhesive, and the thickness of the adhesive layer 3 can be 0.3mm to 1mm.

[0040] In this embodiment, the tire core 2 is made of a single material. The material of the tire core 2 can be polyurethane foam, rubber foam, polyethylene foam, polypropylene foam, nylon elastomer foam, or ethylene-vinyl acetate foam (EVA).

[0041] The following describes the manufacturing method for the puncture-proof tires:

[0042] 1. The ETPU material is placed into a pre-designed mold and pressed into a set shape under high temperature and high pressure to form a ring-shaped tire core. 2.

[0043] 2. Apply a layer of adhesive to the inside of the rubber tire body 1.

[0044] 3. Fill the formed tire core 2 into the rubber tire body 1 and compact it to ensure the strong adhesion and sealing. The adhesive forms an adhesive layer 3, which can be solid or liquid.

[0045] Example 2

[0046] like Figure 2 As shown in the embodiment of this utility model, the puncture-proof tire is applicable to heavy-duty tires, such as automobile tires or mini-truck tires.

[0047] The puncture-proof tire includes a rubber body 1 and a core 2. The rubber body 1 is fitted on the outside of the core 2. The core 2 is made of elastic closed-cell foam material and has a flat circular cross-section. An adhesive layer 3 is matched and connected between the rubber body 1 and the core 2.

[0048] In this embodiment, as Figure 2 As shown, the tire core 2 comprises an inner core 21 and an outer shell 22. The cross-section of the inner core 21 is a flattened circular or elliptical structure, and the cross-section of the outer shell 22 is a flattened circular or elliptical circular structure. Both the inner core 21 and the outer shell 22 are made of existing elastic closed-cell foam materials. The hardness of the inner core 21 is greater than that of the outer shell 22, and the thickness of the outer shell 22 can be 10mm to 30mm.

[0049] Preferably, the inner core 21 is made of ethylene-vinyl acetate (EVA) foam material, and the outer shell 22 is made of ETPU (expanded thermoplastic polyurethane).

[0050] The inner core 21 and the outer shell 22 are fitted together, with a gap of 0 mm between them. The inner core 21 and the outer shell 22 are bonded and fixed together using existing adhesives. The Shore hardness of the inner core 21 can be 38A to 45A.

[0051] For ease of manufacturing, such as Figure 3 As shown, the outer casing 22 contains two semi-sleeves 221 arranged radially A, both of which have C-shaped cross-sections. Alternatively, as... Figure 4 As shown, the outer jacket 22 contains two half-sleeves 221 arranged along the axial direction B, and the cross-sections of the two half-sleeves 221 are also C-shaped.

[0052] In order to better match the shape of the inner core 21 with the shape of the rubber tire body 1, such as Figure 5 and Figure 6 As shown, a plurality of deformation slots 212 are provided on the radially inner side 211 of the inner core 21. The plurality of deformation slots 212 are evenly spaced along the circumferential direction D of the inner core 21. The deformation slots 212 extend radially along the inner core 21, and the openings of the deformation slots 212 face the axis L of the inner core 21. The width of the deformation slots 212 is ( Figure 5 The circumferential dimension (in the expansion joint) is 0mm-1mm. Preferably, the width of the expansion joint 212 is 0mm.

[0053] The following describes the manufacturing method for the puncture-proof tires:

[0054] 1. Place ETPU into a mold and press it into two C-shaped half-body 221s. The half-body 221s are circular ring structures.

[0055] 2. Take another strip of EVA foam with a Shore hardness of 38A or higher, and cut it into strips with an elliptical or flattened oval cross-section. The specific shape can be adjusted according to the tire thickness. Then, make several transverse deformation slits 212 in the EVA foam strip. The cross-section of each deformation slit 212 is an isosceles triangle, with the apex of the isosceles triangle pointing downwards. Figure 6 As shown, to facilitate better adhesion to the rubber tire body 1 later, the EVA foam strip is bent and the two ends are glued together to form a circular inner core 21.

[0056] 3. The two half-body pieces 221 and an inner core 21 are glued together with adhesive to form a whole tire core 2.

[0057] 4. Apply a layer of adhesive to the inside of the rubber tire body 1.

[0058] 5. Fill the formed tire core 2 into the rubber tire body 1 and compact it to ensure the strength and sealing of the bond. The adhesive forms the adhesive layer 3.

[0059] Note: The ETPU material mold should be at least 4 mm larger than the inner side of the rubber tire body 1 to ensure a stronger bond. The puncture-proof tire is not a solid tire. The tire core 2 (i.e., the filler) thickens and supports the tire sidewall, solving the problem of air leakage when the tire sidewall is punctured. During use, the part of the tire's inner ring that contacts the steel rim still needs to be filled with a small amount of air to ensure the tire's resilience.

[0060] All other technical features in this embodiment are the same as those in Embodiment 1. To save space, this embodiment will not be described in detail.

[0061] The following describes a vehicle that includes the aforementioned puncture-proof tires.

[0062] When the puncture-proof tire is a light-duty tire, the vehicle can be a two-wheeled or three-wheeled bicycle or electric vehicle, etc., and the puncture-proof tire can be used for two-wheeled or three-wheeled bicycles or electric vehicles, etc.

[0063] When the puncture-proof tire is a heavy-duty tire, the vehicle can be a car or a mini-truck, etc., and the puncture-proof tire can be used for cars or mini-trucks, etc.

[0064] The advantages of the aforementioned puncture-proof tire protection are:

[0065] 1. The adhesive is appropriately filled between the rubber carcass and the core to bond and fix the rubber carcass and the core, resulting in better stability and avoiding the melting and flow of existing liquid self-healing sealants due to high temperatures.

[0066] 2. The tire core can thicken and support the tire sidewall, maintaining the tire's airtightness even when punctured by a larger foreign object, and solving the problem of air leakage when the tire sidewall is punctured.

[0067] 3. The tire core is made of elastic closed-cell foam material, which can make the tire quieter.

[0068] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of its implementation. Therefore, any substitution of equivalent components or equivalent changes and modifications made within the scope of protection of this utility model should still fall within its coverage. Furthermore, the technical features, technical solutions, and embodiments of this utility model can be freely combined and used.

Claims

1. A puncture-proof tire, characterized in that, The puncture-proof tire includes a rubber body (1) and a core (2). The rubber body (1) is fitted on the outside of the core (2). The core (2) is made of elastic closed-cell foam material. An adhesive layer (3) is matched between the rubber body (1) and the core (2). The core (2) contains an inner core (21) and an outer core (22) with inner and outer layers. The outer jacket (22) contains two radially arranged half-bodies (221) with C-shaped cross sections; or, the outer jacket (22) contains two axially arranged half-bodies (221) with C-shaped cross sections.

2. The puncture-proof tire according to claim 1, characterized in that, The adhesive layer (3) is made of neoprene or polyurethane waterproof adhesive, and the thickness of the adhesive layer (3) is 0.3mm to 1mm.

3. The puncture-proof tire according to claim 1, characterized in that, The hardness of the inner core (21) is greater than that of the outer shell (22).

4. The puncture-proof tire according to claim 1, characterized in that, The inner core (21) is made of ethylene-vinyl acetate foam, and the outer shell (22) is made of ETPU.

5. The puncture-proof tire according to claim 1, characterized in that, The inner core (21) and the outer shell (22) are bonded and fixed together.

6. The puncture-proof tire according to claim 1, characterized in that, Multiple deformation joints (212) are provided on the radial inner side (211) of the inner core (21). The multiple deformation joints (212) are evenly spaced along the circumference of the inner core (21). The deformation joints (212) extend radially along the inner core (21). The opening of the deformation joints (212) faces the axis of the inner core (21). The width of the deformation joints (212) is 0 mm to 1 mm.

7. A vehicle, characterized in that, The vehicle includes the puncture-resistant tire as described in claim 1.

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