Silent tire capable of inhibiting reduction of internal pressure

Abstract

The utility model discloses a mute tire capable of inhibiting reduction of internal pressure, which relates to the technical field of tires and comprises a tire body, and a sound insulation pad is fittingly arranged in the tire body. The sound insulation pad is further sleeved with an anti-explosion layer, the anti-explosion layer forms grids in the circumferential direction and the meridian direction of the tire body, and the width between the anti-explosion layer and the center of the tire body exceeds the width of the tread of the tire body by 5-10 mm; according to the device, the explosion-proof layer is arranged outside the sound insulation pad in a sleeving mode, it can be guaranteed that foreign matter is wrapped through the explosion-proof layer when the foreign matter pierces into the tire, the explosion-proof layer is made of a polymer synthetic memory material (polynorbornene), so that the tire has high strength and high adhesion, and holes of a tire tread rubber layer are filled when the foreign matter is taken out; by arranging the wave-shaped silencing layer, the refraction frequency of noise can be multiplied, meanwhile, the silencing frequency band of the sound insulation pad is further widened through the silencing layer of the trapezoidal structure, and the sound absorption effect is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tire technical field, specifically is a kind of mute tire with inhibit internal pressure reduction. BACKGROUND

[0002] In recent years, with the rapid development of automobile industry, the concern of automobile consumers on driving quality is continuously improved, and the noise of tire gradually becomes the main source of automobile noise due to the smaller sound of motor, which affects the comfort of passengers; The existing noise reduction scheme mainly pastes porous sound-absorbing material to the inner surface of the tire, but the inner hole diameter of the porous sound-absorbing material is relatively single, and the sound reduction frequency band is relatively narrow, resulting in general noise reduction effect.

[0003] The patent with the patent announcement number CN217455543U records a kind of mute tire including tire body, sealing adhesive layer and porous sound-absorbing material;The porous sound-absorbing material is pasted on the inner surface of the inner liner of tire body by sealing adhesive layer, the sealing adhesive layer is provided with sound absorption part one and sound absorption part two, and the sound absorption part one and the sound absorption part two can form at least one sound absorption cavity;The tire body is also provided with a rhombic hole, when the square groove is opposite to the sound absorption cavity, the cross-sectional area of the sound absorption cavity formed by the square groove and the sound absorption cavity can periodically change along the radial direction of the tire body, the sound energy is converted into heat energy, and the noise is reduced;The structure has a multiple-structured sound absorption structure, which can reduce the noise of the tire cavity in a wider frequency range and achieve good noise reduction effect.

[0004] However, the tire has some deficiencies when in use, and the mute tire of this type can cause the cavity to leak air when encountering foreign matter such as nails during driving, which can cause the heat generated by the square groove and the sound absorption cavity during use to be unable to be discharged in time, thereby increasing the risk of tire burst.

[0005] Based on this, a mute tire with inhibit internal pressure reduction is now provided, which can eliminate the drawbacks of existing devices. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a kind of mute tire with inhibit internal pressure reduction, to solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A mute tire with inhibit internal pressure reduction, comprising a tire body, the tire body is internally fitted with a sound insulation pad;The sound insulation pad is further sleeved with an explosion-proof layer.

[0009] Preferably, the explosion-proof layer forms a grid in the circumferential direction and meridian direction of the tire body, and the width of the explosion-proof layer from the center of the tire body is 5-10mm more than the width of the tire body running surface.

[0010] Preferably, the thickness of the explosion-proof layer is between 4-6mm, and the material of the explosion-proof layer is poly-norbornene.

[0011] Preferably, the sound insulation pad comprises a sound insulation pad body, two side extension rings are symmetrically arranged on the side of the sound insulation pad body, and a plurality of sound insulation holes are arranged in the circumferential array on the sound insulation pad body.

[0012] Preferably, a plurality of built-in sound insulation structures are further arranged in the sound insulation pad, the built-in sound insulation structure comprises a first annular layer arranged in the inner wall of the sound insulation pad body, and a second annular layer is further arranged above the sound insulation pad body; a sound insulation block is further arranged in cooperation on the first annular layer, the sound insulation block is connected through a sound insulation area and the first annular layer, and a plurality of sound insulation layers are further arranged in the sound insulation block.

[0013] Preferably, the sound insulation layer is in a wave shape.

[0014] Preferably, the sound insulation area is in a trapezoidal structure.

[0015] Preferably, the sound insulation pad and the explosion-proof layer are connected through adhesive material, and the adhesive material is neoprene.

[0016] Compared with the prior art, the utility model has the beneficial effects as follows:

[0017] 1. The explosion-proof layer is arranged on the sound insulation pad, so that the tire can be wrapped by the explosion-proof layer when foreign matters pierce into the tire, the explosion-proof layer is made of high molecular synthetic memory material (poly-norbornene), the tire has high strength and high adhesion, the hole of the tire tread rubber layer is filled when the foreign matters are taken out, and the internal pressure of the tire is inhibited from being reduced.

[0018] 2. The sound insulation layer in a wave shape is arranged, the number of refraction of noise is multiplied, the sound insulation frequency band of the sound insulation pad is further widened by the sound insulation layer in a trapezoidal structure, and the sound absorption effect is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the utility model.

[0020] Figure 2 It is an explosion view of the utility model.

[0021] Figure 3 It is a sectional view of the utility model.

[0022] Figure 4 It is a sectional view of the utility model Figure 3 It is a partial enlarged view of A of the utility model.

[0023] Reference sign annotations: 100, tire body; 200, sound insulation pad; 201, sound insulation pad body; 202, side extension ring; 203, sound insulation hole; 300, explosion-proof layer; 400, built-in sound insulation structure; 401, first annular layer; 402, sound insulation zone; 403, sound insulation block; 404, sound insulation layer; 405, second annular layer. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples.

[0025] In one embodiment, as shown in Figure 1 and Figure 2 , a mute tire with suppressed internal pressure reduction includes a tire body 100, an internal sound insulation pad 200 is matched with the tire body 100, reducing the noise generated by cavity resonance when the hub and the tire body 100 are in contact; the sound insulation pad 200 is further sleeved with an explosion-proof layer 300, preventing foreign objects from penetrating into the sound insulation pad 200 from the outside.

[0026] In one embodiment, as shown in Figure 2 , the explosion-proof layer 300 forms a grid in the circumferential and meridian directions of the tire body 100, which increases the contact area between the fluid and the tire lining, increases the frictional loss and local loss in the flow process, thereby avoiding the material accumulation phenomenon of the explosion-proof layer 300, and improving the high-speed performance and tire dynamic balance uniformity performance of the existing mute tire; the width of the explosion-proof layer 300 from the center of the tire body 100 is 5-10mm more than the width of the tire body 100 running surface, so that the explosion-proof layer 300 is uniformly arranged in the circumferential direction of the sound insulation pad 200.

[0027] In one embodiment, as shown in Figure 2 , the thickness of the explosion-proof layer 300 is between 4-6mm, and the material of the explosion-proof layer 300 is poly norbornene, which has high strength, high tensile property and high adhesion, and can wrap foreign objects penetrating into the tire body 100.

[0028] In one embodiment, as shown in Figure 2 , the sound insulation pad 200 includes a sound insulation pad body 201, which is mainly made of low-cost non-woven fabric, reducing the production cost and maintenance cost; the sound insulation pad body 201 is further provided with two symmetrical side extension rings 202 on the side, which are used to fix the explosion-proof layer 300 sleeved on the sound insulation pad body 201; a plurality of sound insulation holes 203 are arranged in the circumferential direction of the sound insulation pad body 201, which can uniformly disperse the noise.

[0029] In one embodiment, as shown in Figures 3-4As shown, the sound insulation pad 200 is also provided with a plurality of built-in sound-absorbing structures 400, the sound-absorbing structure 400 comprises a first annular layer 401 provided on the inner wall of the sound insulation pad body 201, a second annular layer 405 is further provided on the sound insulation pad body 201, the first annular layer 401 and the second annular layer 405 are directly punched after being bonded together with the sound-absorbing area 402, and the bonding is firm and the forming efficiency is high; a sound-absorbing block 403 is further provided on the first annular layer 401 in cooperation, the sound-absorbing block 403 is connected through the sound-absorbing area 402 and the first annular layer 401, and a plurality of sound-absorbing layers 404 are further provided in the sound-absorbing block 403.

[0030] In one embodiment, as shown in Figure 4 The sound-absorbing layer 404 is wave-shaped, forming a closed sound-absorbing cavity, so that the noise generated by the tire body 100 is continuously reflected in the sound-absorbing cavity to weaken the noise, complete noise reduction, and achieve good noise reduction effect.

[0031] In one embodiment, as shown in Figure 4 The sound-absorbing area 402 is a trapezoidal structure, which has a large sound-absorbing area and good sound-absorbing effect, and can effectively reduce the noise of the surrounding environment.

[0032] In one embodiment, as shown in Figure 3 The sound-absorbing pad 200 and the explosion-proof layer 300 are connected through an adhesive material, the adhesive material is neoprene, the initial adhesion of the adhesive material is large, the bonding strength is high, and the sound-absorbing pad 200 and the explosion-proof layer 300 will not slide relative to each other.

[0033] Working principle: when the foreign matter pierces through the tire body 100 to the inner wall of the tire body 100, the foreign matter first contacts the explosion-proof layer 300, and due to the material properties of the explosion-proof layer 300, the explosion-proof layer 300 can wrap the foreign matter to prevent the foreign matter from continuing to penetrate into the sound-absorbing pad 200; the sound-absorbing pad 200 in the device can effectively weaken the noise energy through the built-in wave-shaped sound-absorbing layer 404, and complete noise reduction.

[0034] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A quiet tire with the function of suppressing internal pressure reduction, comprising a tire body (100), wherein a sound-insulating pad (200) is disposed inside the tire body (100); characterized in that, An explosion-proof layer (300) is also provided outside the sound insulation pad (200); The explosion-proof layer (300) forms a grid in the circumferential and meridional directions of the tire body (100), and the distance between the explosion-proof layer (300) and the center of the tire body (100) exceeds the width of the tire body (100) by 5-10 mm.

2. A quiet tire with the function of suppressing internal pressure reduction according to claim 1, characterized in that, The thickness of the explosion-proof layer (300) is between 4-6 mm, and the material of the explosion-proof layer (300) is polynorbornene.

3. A quiet tire with the function of suppressing internal pressure reduction according to claim 1, characterized in that, The sound insulation pad (200) includes a sound insulation pad body (201), and two side extension rings (202) are symmetrically provided on the side of the sound insulation pad body (201). Multiple sound-absorbing holes (203) are distributed in a circular array on the sound insulation pad body (201).

4. A quiet tire with the function of suppressing internal pressure reduction according to claim 3, characterized in that, The sound insulation pad (200) is also provided with a plurality of built-in sound-absorbing structures (400). The built-in sound-absorbing structure (400) includes a first annular layer (401) formed on the inner wall of the sound insulation pad body (201). A second annular layer (405) is also provided above the sound insulation pad body (201). A sound-absorbing block (403) is also provided on the first annular layer (401). The sound-absorbing block (403) is connected to the first annular layer (401) through a sound-absorbing area (402). The sound-absorbing block (403) is also provided with a plurality of sound-absorbing layers (404).

5. A quiet tire with the function of suppressing internal pressure reduction according to claim 4, characterized in that, The sound-absorbing layer (404) is wavy.

6. A quiet tire with the function of suppressing internal pressure reduction according to claim 4, characterized in that, The silencing area (402) has a trapezoidal structure.

7. A quiet tire with the function of suppressing internal pressure reduction according to claim 1, characterized in that, The sound insulation pad (200) and the explosion-proof layer (300) are connected by an adhesive material, which is neoprene rubber.

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