CN211493549U

CN211493549U - Puncture-resistant self-repairing repair-free and mute tire

Info

Publication number: CN211493549U
Application number: CN201922474131.4U
Authority: CN
Inventors: 陶国忠; 崔友明; 兰金华
Original assignee: Jiangsu General Science Technology Co Ltd
Current assignee: Jiangsu General Science Technology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-15
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses an anti-prick self-repairing repair-free and mute tire, a tire body comprises tire side parts arranged at two sides of a tread part and a tread part which extends along the circumferential direction of the tire and forms a ring shape; the tire side part is provided with a bead part at the position where the tire and the rim are installed; the tread part comprises an outer surface which is contacted with the ground and an inner surface which is contacted with the air filled in the tire, and a sizing material coating, an air-tight layer with sealing function, a belt layer consisting of a plurality of steel wires and a cap ply consisting of fiber cord fabric are sequentially formed between the inner surface and the outer surface; a noise reduction member is provided on the tread portion closely attached to the inner surface. The annular self-repairing rubber on the inner surface of the tread part of the tire realizes the puncture-resistant self-repairing repair-free function, and meanwhile, the silencing performance is realized by the strip-shaped sound-absorbing noise-reducing piece assembled on the inner surface of the self-repairing rubber.

Description

Puncture-resistant self-repairing repair-free and mute tire

Technical Field

The utility model belongs to automobile parts production field, concretely relates to repair and silent's tire is exempted from to anti pricking selfreparing.

Background

The tire is pricked in daily life, for automobiles, the automobile can only wait for rescue or replace a spare tire in situ after the tire is pricked, if the automobile is filled with goods, or in a mountainous area or desert where people are rare, the tire replacement and the rescue are more time-consuming and labor-consuming, a plurality of female drivers can not replace the spare tire at ordinary times, the situations are caused late at night, the safety is affected, and under the condition, the pricking-resistant self-repairing repair-free tire can solve the above worry.

The automobile is at high-speed operation in-process, if the tire is pricked, can produce gas leakage and even take place to blow out, the influence has all been caused for driver passenger's safety even peripheral pedestrian, the realization of anti-puncture self repair function can prevent that the tire from taking place the gas leakage after being pricked, when the tire is impaled, inside viscous material can tightly wrap the object of pricking in and prevent the gas leakage, glue material will fill the breach that forms in the twinkling of an eye when the object of pricking is extracted, gather together in perforation department automatically, thereby realize automatic prosthetic function.

In the process of high-speed running of an automobile, tire noise is an important factor influencing the comfort performance of the automobile, the surface of the tire vibrates along with the unevenness of the road surface due to the contact of the tire and the road surface, the vibration enables air in a cavity in the tire to vibrate to generate resonance sound, when the resonance sound reaches a specific frequency, eardrums are pressed, human perception is uncomfortable, particularly for an economical car, the sealing in the automobile is general, and the noise is more obviously heard. Recently, new energy automobiles are particularly sensitive to noise, and because the new energy automobiles do not have diesel or gasoline engines and have no interference influence of the engines, drivers and passengers are higher in sensitivity to noise influence on tires when sitting in the automobiles, and therefore the new humanized requirement is that noise of the tires is reduced to bring better comfort.

Disclosure of Invention

The utility model aims to solve the technical problem that to prior art not enough, provide a pneumatic tire who possesses area anti stabbing selfreparing and exempt from to mend function and noise reduction device. The method can obtain the puncture-resistant self-repairing repair-free function realized by the annular self-repairing rubber assembled on the inner surface of the tread part of the tire, and simultaneously realize the mute performance by the belt-shaped sound-absorbing noise-reducing piece assembled on the inner surface of the self-repairing rubber. In particular to a puncture-resistant self-repairing repair-free and silent tire. It is characterized in that the preparation method is characterized in that,

the tire body comprises a side wall part arranged on two sides of a tread part and a tread part which extends along the circumferential direction of the tire and forms a ring shape;

the tire side part is provided with a bead part at the position where the tire and the rim are installed;

the tread part comprises an outer surface which is in contact with the ground and an inner surface which is in contact with the air filled in the tire, and a sizing coating, an air-tight layer with a sealing function, a belt layer consisting of a plurality of steel wires and a cap ply consisting of fiber cord fabric are sequentially formed between the inner surface and the outer surface from inside to outside;

a noise reduction member is provided on the tread portion closely attached to the inner surface.

Further, the bead portion is a bead ring structure formed by forming a core from one or more strands of substantially non-stretchable steel wires and surrounding the core with a plurality of rubberized fabric layers.

Further, the sizing material coating is annularly arranged along the center of the inner surface of the tread portion along the circumferential direction, the width of the sizing material coating is 70% -95% of the width of the innermost belted layer, and the thickness of the sizing material coating is 2-10 mm.

Further, the noise reduction part is silent cotton, the width of the silent cotton is 50% -80% of the width of the innermost belted layer, the thickness of the silent cotton is 5-35 mm, and the density of the silent cotton is 25-35 kg/m for carrying out thin film planting.

Further, the belt ply consists of a plurality of steel wires, and the belt ply consists of 2-3 layers;

the cap ply layer is composed of fiber cord fabric, and the cap ply layer is generally composed of 1-2 layers.

Has the advantages that:

1. compare traditional tire this application has set up the self-repairing sizing material that anti puncture selfreparing exempted from to repair at tread portion internal surface center circumferential direction, and when the tire was impaled, inside viscous material can tightly pack the object of stabbing and prevent gas leakage, and the sizing material will fill the breach that forms in the twinkling of an eye when the object of stabbing is extracted, gathers together in the perforation department automatically to realize self-repairing's function. The automobile noise reduction device has the advantages that the driving safety of an automobile is ensured, the use cost of a user is saved, resources (the number of scrapped tires caused by poor repair) are saved for the society, meanwhile, the belt-shaped sound absorption and noise reduction piece, namely the silencing cotton is arranged to realize the silencing performance, and the comfortable driving feeling is provided for drivers and passengers.

2. Compare other silence tires, the interior internal surface center circumferential direction has set up the silence cotton in other silence tire tread portions, and the tire is pricked the back interior and is polished and repair and can destroy the silence cotton, has the silence cotton also to disturb the finding of mending personnel accuracy in addition by the pricked point, therefore can only adopt the single mode of repairing that the mushroom nail was repaired on the market, and the mushroom nail is repaired the price and is expensive, has caused user's use cost. This application increases from repairing special precoat, has also solved the difficult shortcoming of repairing after the tire stabbing of original only taking the cotton device of silence, and the tire is pricked the back and is inhaled the sound cotton and still keep original sound absorption and fall the characteristic of making an uproar, has increased the market competition rate of product.

3. On the basis of the traditional silent cotton technology, the silent cotton surface modeling is not limited to be concave-convex grains or plain weave, as shown in figure 1, the silent cotton surface modeling is in various forms, and compared with the single application of the traditional silent cotton tire, the silent cotton tire is applied in a noise improving process according to the specific cavity noise frequency band characteristics of the tire, and the silent cotton tire noise reduction device is applied. This inhale sound and fall piece of making an uproar can play the resonance effect that destroys tire cavity noise through the inside change that disturbs tire atmospheric pressure through the cotton grooved quiet slot in center of silence, and secondly, the grooved sound of inhaling falls the piece of making an uproar and can highlight the discernment of brand, better the merging into the performance that disturbs tire cavity noise through grooved form to the brand Logo. As shown in fig. 2.

4. The puncture-resistant self-repairing repair-free rubber material layer is additionally arranged, is made of a special formula, is a viscous mixture composed of various high molecular compounds, rubber with different particle sizes and the like, is made of a butyl rubber as a main material, ensures the air tightness of the tire, can ensure that the tire is not air-tight and repair-free after being punctured, and can firmly stick silent cotton on the repair-free rubber material layer in the movement process of the tire.

5. According to the noise reduction device, the volume of the tire cavity is changed, the change of the volume of the tire cavity is absorbed in the running process of the tire, the mobility of the tire airflow in the tire noise device is increased, the vibration of the tire and the road surface is absorbed by the porous characteristic of the sound absorption and noise reduction piece, namely the silencing cotton, the frequency of the tire cavity noise is broken, the cavity noise of the tire and the vehicle buzzing noise are weakened, and particularly the tire and the vehicle resonate in 200Hz-250Hz to cause the vehicle to resonate in the vehicle.

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

Drawings

Fig. 1 is a cross-sectional view of the surface relief design of the present solution.

Fig. 2 is a cross-sectional view of the surface plain design of this embodiment.

Fig. 3 is a diagram of the grooved font of the present solution.

FIG. 4 is a schematic cross-sectional view of a tire after completion of a prior art self-healing compound.

Fig. 5 is a schematic sectional view of a tire according to this embodiment.

Fig. 6 is a process flow diagram of the present scheme.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will describe in further detail common embodiments of the present invention with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-6, the conventional spraying process is uneven in spraying and easy to separate and delaminate, because vulcanized silicone oil is contained in an inner liner of a tire, and the silicone oil cannot be cleaned by chemical additives, even if the inner liner is cleaned temporarily, the silicone oil in the inner liner still seeps out to the surface along with the passage of time, the self-repairing rubber material can separate and delaminate when meeting the silicone oil, once the inner liner separates and delaminates, the balance of the tire is rapidly deteriorated, high-speed shaking occurs, and the safety after pricking cannot be guaranteed. The self-repairing rubber used in the application needs to be treated by a special process: the method comprises the steps of firstly polishing an inner surface airtight layer of a vulcanized tire tread, wherein the polishing width is 70% -95% of the width of an innermost belt ply, the polishing depth is 0.1-1 mm, cleaning and removing dust from rubber scraps after polishing, performing a high-temperature heating spraying process by using a thermal spraying machine after dust is removed, uniformly spraying a self-repairing rubber material on the center of the inner surface of the tread along the circumferential direction, performing online air cooling after spraying, performing spraying appearance inspection and dynamic balance detection after cooling, and viewing the process flow chart on the last page. The self-repairing rubber material can be ensured not to be separated from the tire body in the high-speed movement process of the tire by adopting the process, and the self-repairing rubber material can keep enough viscosity, always firmly adheres to the center of the inner surface of the tread part and keeps unchanged in the original position.

In fig. 5, a puncture-resistant self-repairing repair-free and silent tire according to an embodiment of the present invention includes a tire body including a sidewall portion 8 disposed on both sides of a tread portion and a tread portion 7 extending circumferentially with the tire and forming a ring shape; the sidewall portions 8 are used in a pair and arranged on both sides of the tread portion;

the sidewall part 8 is provided with a bead part 6 at the position where the tire is mounted with a rim;

the tread part 7 comprises an outer surface 7.1 which is in contact with the ground and an inner surface 7.2 which is in contact with the air filled in the tire, wherein a sizing coating 2, an airtight layer 3 with a sealing function, a belt ply 1 consisting of a plurality of steel wires and a cap ply 5 consisting of fiber cord fabrics are sequentially formed between the inner surface and the outer surface;

a noise reduction member 4 is provided on the tread portion abutting the inner surface 7.2.

Further, the bead portion 6 has a bead ring structure in which a core is formed of one or more substantially non-stretchable steel wires and the core is surrounded by a plurality of rubberized fabric layers.

The rubber coating 2 is annularly arranged along the center of the inner surface of the tread part along the circumferential direction, the self-repairing rubber of the rubber coating 2 realizes the anti-puncture self-repairing non-repairing function, and meanwhile, the silencing performance is realized by the belt-shaped sound-absorbing noise-reducing piece assembled on the inner surface of the self-repairing rubber. The width of the sizing material coating 2 is 70% -95% of the width of the innermost belted layer, and the thickness of the sizing material coating 2 is 2-10 mm.

Noise reduction spare 4 is the silence cotton, and the width of silence cotton is 50% ~80% of innermost belted layer width, and thickness is 5~35 mm, and density is 25~35kg/m thin year.

The belt ply 1 consists of a plurality of steel wires, and the belt ply consists of 2-3 layers;

the cap ply layer 5 is composed of fiber cord fabric, and the cap ply layer is generally composed of 1-2 layers.

The puncture-resistant self-repairing repair-free rubber layer added in the design is prepared by a special formula, the formula is a viscous mixture composed of various high molecular compounds, rubber with different particle sizes and the like, the main material is butyl rubber, the proportion content of the butyl rubber is 30% -80% of the total weight, the air tightness of the tire is ensured, and the self-repairing performance is reduced when the proportion is more than 80%. When the tire is punctured, the punctured object can be tightly wrapped by the viscous material in the mixture to prevent air leakage, and when the punctured object is pulled out, the rubber material can instantly fill the formed gap and automatically gather at the punctured position, so that the tire can be ensured not to leak air and be repaired after being punctured, the mute cotton can be firmly stuck on the self-repairing rubber material layer in the tire moving process, and the position can be kept unchanged all the time.

The self-repairing rubber used in the application needs to be treated by a special process: firstly, polishing an inner surface airtight layer of a tread part of a vulcanized tire, wherein the polishing width is 70% -95% of the width of an innermost belt ply of the inner surface of the tread part, the polishing depth is 0.1-1 mm, preferably 0.2-0.4 mm, damage is caused to a tire body fiber cord fabric when the polishing depth exceeds 1mm, and surface silicone oil seepage is easily caused to separate a self-repairing sizing material when the polishing depth is less than 0.1 mm. The polishing rubber scraps are cleaned and dedusted after polishing, and the polished rubber scraps must be cleaned completely, so that the separation of the self-repairing rubber material cannot be caused. After dust removal is completed, a high-temperature heating spraying process (the mixture is changed from a viscous state to a liquid state) is carried out by a thermal spraying machine, the thermal spraying temperature is controlled to be 170-210 ℃, preferably 180-200 ℃, when the temperature exceeds 210 ℃, the self-repairing performance of the self-repairing rubber material is reduced, the self-repairing rubber material is uniformly sprayed on the center of the inner surface of the tread part and is sprayed along the circumferential direction, the width of the sprayed self-repairing rubber is 70-95% of the width of the innermost belt ply, preferably 80-95%, and when the width of the sprayed self-repairing rubber is less than 70% of the width of the innermost belt ply, the situation that no repairing rubber exists on two sides of the; the spraying thickness is 2-10 mm. And after the spraying is finished, carrying out air cooling on line, controlling the air cooling temperature to be 10-35 ℃, and carrying out spraying appearance inspection (inspecting the spraying thickness/weight, the surface of the spraying material to have no bubbles and the like) after cooling. The self-repairing rubber material can be ensured not to be separated from the tire body in the high-speed movement process of the tire by adopting the process, and the self-repairing rubber material can keep enough viscosity, always firmly adheres to the center of the inner surface of the tread part and keeps unchanged in the original position. The self-repairing glue coating has the characteristics of high temperature resistance and difficult shedding when meeting water.

The tire strip that this design increases inhales the sound and falls the piece of making an uproar and be the silence cotton, and its material of the strip sound of inhaling falls the piece of making an uproar is porous polyurethane cotton, also can be porous rubber and foam plastics. The hole opening ratio is not limited to a fixed ratio, and the hole opening ratio is set according to the tire specification and simulation requirements. For example, its surface of porous polyurethane cotton contains raised grain or plain weave in this application, and the raised grain size can play the air flow of disturbing tire inside die cavity along with the change of car driving in-process, and its surface line design is shown as the schematic diagram 1-2, and the raised grain surface is circular one-tenth continuity of arranging, and the raised grain volume accounts for 10% ~50% of silence cotton volume, and preferred 15% ~30%, and it is not obvious to exceed 50% too big resonance sound reduction effect that causes easily, is difficult to reach the anticipated noise reduction effect. In order to effectively exert the mute effect, the height difference A of the concave-convex patterns is less than 8mm, the width of the mute cotton is 50-80%, preferably 60-80% of the width of the innermost belted layer, when the width of the mute cotton exceeds 90%, the effect of reducing resonance is not obvious, the mute cotton cannot be completely bonded with the self-repairing sizing material, and the width of the mute cotton must be less than the width of the self-repairing sizing material layer; the thickness of the silencing cotton is 5-35 mm, preferably 12-25 mm, and the low-frequency noise is difficult to reduce when the thickness exceeds 35 mm; carrying out dry distillation on the mute cotton at a density of 25-35 kg/m, preferably; the mute cotton material has the following dynamic performance indexes: the elongation at break is more than or equal to 100 percent, the tensile strength is more than or equal to 80 KPa, the 40 percent compressive strength is 3 to 5 KPa, the 25 percent indentation hardness is more than or equal to 100N, the 40 percent indentation hardness is more than or equal to 150N,

The 60% indentation hardness is more than or equal to 260N; the temperature is in the range of-55 ℃ to +190 ℃.

The groove formed by the surface of the silencing cotton in the design is mainly used for increasing the circumferential noise reduction contact surface area of the tire and disturbing the air flow of the tire inner cavity in the radial direction of the tire. The sound-absorbing and noise-reducing piece is not limited to a whole silent cotton strip attached to the inner side of the tire, and can be divided into 2-4 strips according to design requirements and attached to the inner side of the tire in an equal dividing mode. The tire sound absorption and noise reduction piece with the surface grooves comprises La, Lb, Lc, LA and LB in size, wherein the width of a La grooving font is 30-60 mm, Lb takes half of LA (in the center of the noise reduction piece), Lc takes 200-500 mm, LA takes 50% -80% of the width of an innermost belt ply, LB takes 30% -100% of the circumferential length of the inner surface of the tire, the grooving font is CELIMO or CHITUMA brand Logo, the grooving depth is 5-35 mm, and preferably the grooving depth is equal to the thickness of mute cotton, as shown in a schematic diagram 3.

In this application, the sound absorbing and noise reducing piece of the tire is a mute cotton centering fit on the puncture-resistant self-repairing repair-free sizing material coating at the center position of the inner surface of the tire tread portion. After the mute cotton is bonded with the puncture-resistant self-repairing repair-free adhesive coating, if the mute cotton is torn, the bonding is qualified only if the mute cotton is torn.

In the application, dynamic balance detection (detecting the total weight of the tire and the static unbalance/dynamic unbalance amount) is carried out after the mute cotton is attached so as to detect the influence on vehicle jumping after the tire is attached with the self-repairing rubber material and the mute cotton, and the driving comfort is kept. The process can ensure that the mute cotton does not depart from the tire body in the high-speed movement process of the tire, is kept in the original position and cannot change, and the original mute performance is maintained.

The process flow diagram of the design is shown in FIG. 6.

The above description is only for the best embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. The details of the present invention not described in detail in the specification are well known to those skilled in the art.

Claims

1. The puncture-resistant self-repairing repair-free silent tire is characterized in that a tire body comprises side wall parts (8) arranged on two sides of a tread part and a tread part (7) which extends along the circumferential direction of the tire and forms a ring shape; the tyre side part (8) is provided with a tyre bead part (6) at the position where the tyre is installed with a wheel rim; the tire tread part (7) comprises an outer surface (7.1) contacted with the ground and an inner surface (7.2) contacted with the air filled in the tire, wherein a sizing coating (2), an air-tight layer (3) playing a sealing role, a belt ply (1) consisting of a plurality of steel wires and a cap ply (5) consisting of fiber cord fabric are sequentially formed between the inner surface and the outer surface; a noise reduction piece (4) is arranged on the tread part closely attached to the inner surface (7.2).

2. The puncture-resistant self-repairing repair-free silent tire according to claim 1, wherein the bead portion (6) has a bead ring structure formed by a core of one or more substantially non-stretchable steel wires and a plurality of rubberized fabric layers surrounding the core.

3. The puncture-resistant self-repairing repair-free silent tire as claimed in claim 1, wherein the rubber coating (2) is annularly arranged along the center of the inner surface of the tread portion along the circumferential direction, the width of the rubber coating (2) is 70% -95% of the width of the innermost belt layer, and the thickness of the rubber coating (2) is 2-10 mm.

4. The puncture-resistant self-repairing repair-free mute tire as claimed in claim 1, wherein the noise reduction piece (4) is mute cotton, the width of the mute cotton is 50% -80% of the width of the innermost belt ply, the thickness of the mute cotton is 5-35 mm, and the density of the tire is 25-35 kg/m.

5. The puncture-resistant self-repairing repair-free silent tire as claimed in claim 1, wherein the belt layer (1) is composed of a plurality of steel wires, and the belt layer is composed of 2-3 layers; the cap ply layer (5) is composed of fiber cord fabric, and the cap ply layer is generally composed of 1-2 layers.