CN211280513U

CN211280513U - Bead reinforcing structure of pneumatic tire

Info

Publication number: CN211280513U
Application number: CN201922356408.3U
Authority: CN
Inventors: 张元德
Original assignee: Shandong Shuangwang Rubber Co ltd
Current assignee: Shandong Shuangwang Rubber Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-08-18
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a pneumatic tire's child lip reinforcement structure relates to automobile tire technical field, and the main technical problem of solution is in pneumatic tire, and its child lip intensity is not enough. The utility model adopts the technical proposal that: pneumatic tire's child lip sets up on the side wall, and the child lip includes inner liner, apex, curtain cloth turn-up, carcass ply and child lip core, and each parts sets up on the inner liner, wherein child lip reinforcement structure sets up on the carcass ply, and child lip reinforcement structure includes the reinforcing bottom and sets up reinforcing net on the reinforcing bottom. The tire bead reinforcing structure is a reinforcing rib structure, and the reinforcing rib structure is made of reinforced rubber. And the reinforcing grids are criss-cross filament rectangular grids, and the cross section diameter of each single filament rectangular grid ranges from 0.13mm to 1.0 mm. The utility model discloses can improve the intensity of child lip, the intensity and the life of extension tire.

Description

Bead reinforcing structure of pneumatic tire

Technical Field

The utility model relates to a tire technical field, more specifically are tire bead reinforcement structure that relates to a pneumatic tire.

Background

The pneumatic tire is an important component of an automobile chassis, is a main carrier for supporting the weight of an automobile, and directly threatens the safety of the whole automobile once the tire fails. At present, the inner radial ply tire is not used for rapidly replacing the inner tire, the inner radial ply tire becomes a mainstream product in the market, and the runflat problem is very easy to occur in the replacement and use process, particularly in the middle and short distance heavy load use process, so that the inner radial ply tire is a great potential safety hazard for road users. The problem of knocking over is mainly because the service conditions of the tire are not obviously changed in the replacement and use process, the tire still mainly has high air pressure and heavy load, the tire bead is deformed excessively in the running process of an automobile, the increase amount of the circumference of the bead is accumulated continuously in the running process, and finally the tire is separated from a wheel rim. The car is in the operation in-process, and a lot of actions of controlling often can appear, for example sharp turn, sharp acceleration, emergency braking or other actions, and the tire is after a period of time of driving for a long time, and the child lip portion usually can receive the easy themogenesis of exogenic action, causes apex chap or matrix deformation easily, adopts the steel band strengthening layer to strengthen the child limit intensity among the traditional art. However, the steel belt reinforcing layer can be used for reinforcing the strength of the tire bead, and the stress distribution on the tire bead is not uniform under the conditions that the high drop point on a coil is not reasonable or the position of the steel belt is not reasonable, so that the strength of the tire is reduced. The rubber is sandwiched between steel wire rings in the traditional technology, after the number of winding turns is increased, the bending rigidity is increased, the tire mounting difficulty is caused, the tire ring positioning difficulty is increased, the matching performance of the tire ring and a rim is reduced, and the vibration of the tire ring is increased

The pneumatic tire is filled with compressed air into the elastic bag to alleviate vibration and impact during movement, and in the prior art, when the pneumatic tire is inflated, in order to ensure the inflation effect of the pneumatic tire, a bead lip part is usually supported by the triangular rubber, so that a novel bead reinforcing structure of the pneumatic tire is needed, and the strength and the service life of the tire are prolonged.

Disclosure of Invention

Not enough to above-mentioned technique, the utility model discloses a pneumatic tire's child lip reinforcement structure can strengthen the child lip, prolongs the intensity and the life of tire.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a pneumatic tire's child lip reinforcement structure, pneumatic tire's child lip sets up on the side wall, and the child lip includes inner liner, apex, curtain cloth turn-up, carcass ply and child lip core, and each part setting is in on the inner liner, wherein child lip reinforcement structure sets up on the carcass ply, and child lip reinforcement structure includes the reinforcing bottom and sets up reinforcing net on the reinforcing bottom.

As a further technical scheme of the utility model, child lip reinforcement structure is reinforcing rib structure, and reinforcing rib structure's material is reinforcing rubber.

As a further technical solution of the present invention, the bead reinforcing structure is bypassed around the bottom of the bead core and turned up.

As a further technical proposal of the utility model, the reinforcing grids are criss-cross filiform rectangular grids, and the cross section diameter range of a single filiform rectangular grid is 0.13mm-1.0 mm.

As a further technical proposal of the utility model, the thickness range of the reinforced grid is 1.6mm-2.3mm, and the length range is 10mm-100 mm.

As a further technical scheme of the utility model, the reinforcing bottom passes through the viscidity glue and bonds with the triangle glue, and the viscidity glue is powerful rubber adhesive EA.

As a further technical proposal of the utility model, the thickness range of the reinforcing bottom layer is 0.4mm-1.3mm, and the length range is 10mm-100 mm.

As a further technical proposal of the utility model, the reinforcing bottom layer is positioned above the bead core within the range of 2mm-10 mm.

As a further technical scheme of the utility model, the upper end of child lip reinforcement structure is 2mm at least with the upper end staggered distance of apex.

As a further technical proposal of the utility model, the material of the reinforced bottom layer is short fiber reinforced rubber SFRR, the diameter range of which is 0.2-0.3 μm, and the length range is 100-200 μm.

Has the advantages that:

the utility model discloses an add the reinforcing structure in pneumatic tire, can strengthen pneumatic tire's child lip structure greatly, avoided the emergence of stress, reduce to warp and generate heat, increased the rigidity of child lip portion, make the car in the process of traveling, make the sizing material in the child lip in the tire closely with the sizing material bonding, the child lip warp the themogenesis low and the heat dissipation fast, be difficult to separate between the sizing material and between the curtain yarn, the life of tire has been prolonged greatly, thereby improve tire durability.

Drawings

FIG. 1 is a schematic perspective view of a bead reinforcement structure of a pneumatic tire according to the present invention;

FIG. 2 is a schematic structural view showing an embodiment of the present invention in which a bead reinforcing structure for a pneumatic tire is applied;

reference numerals: 1-an inner liner layer; 2-apex; 3-a ferrule reinforcement layer; 4-a carcass ply; 5-curtain cloth edge curling; 6-bead core; 7-side wall; 31-a reinforcing bottom layer; 32-enhancement mesh.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "up", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 2, a bead reinforcing structure of a pneumatic tire, a bead of the pneumatic tire is disposed on a sidewall 7, and the bead includes an inner liner 1, a bead filler 2, a ply turn 5, a carcass ply 4 and a bead core 6, each component is disposed on the inner liner 1, the bead reinforcing structure 3 is disposed on the carcass ply 4, and the bead reinforcing structure 3 includes a reinforcing base 31 and a reinforcing mesh 32 disposed on the reinforcing base 31.

Through the above-mentioned embodiment, the utility model discloses an add the reinforcing structure in pneumatic tire, can strengthen pneumatic tire's child lip structure greatly, avoided the emergence of stress, reduce to warp and generate heat, increased the rigidity of child lip portion, make the car in the process of traveling, make the sizing material in the child lip closely with the sizing material bonding, the child lip warp the themogenesis and low and the heat dissipation fast, be difficult to the separation between the sizing material and between the curtain yarn, the life of tire has been prolonged greatly, thereby improve tire durability.

In a further embodiment, the bead reinforcing structure 3 is a reinforcing rib structure, and the material of the reinforcing rib structure is reinforced rubber. Specifically, as shown in fig. 1, the reinforcing rib structure is made of NR, SBR and BR rubber materials reinforced by carbon black, and in the specific working process, the energy loss of the rubber materials can be reduced by changing the types of raw rubber or reducing the amount of carbon black in the rubber materials, so that the rolling resistance of the tire is reduced, and the weight of the tire can also be reduced by reducing the number of plies of the carcass ply and the thickness of the rubber layer.

In a further embodiment, the bead reinforcing structure 3 is wrapped around the bottom of the bead core 6 and turned up.

In a further embodiment, the reinforcing mesh 32 is a criss-cross rectangular mesh of filaments, and the cross-sectional diameter of the individual rectangular meshes of filaments ranges from 0.13mm to 1.0 mm.

In a further embodiment, the reinforcing grid 32 has a thickness in the range of 1.6mm to 2.3mm and a length in the range of 10mm to 100 mm.

In a further embodiment, the reinforcing bottom layer 31 is bonded to the apex 2 by an adhesive glue, and the adhesive glue is a strong rubber adhesive EA.

In a further embodiment, the reinforcing bottom layer 31 has a thickness in the range of 0.4mm to 1.3mm and a length in the range of 10mm to 100 mm.

In a further embodiment, the position of the reinforcing bottom layer 31 above the bead core 6 ranges from 2mm to 10 mm.

In a further embodiment, the upper end of the bead reinforcing structure 3 is offset from the upper end of the apex 2 by a distance of at least 2 mm.

In a further embodiment, the material of the reinforcing bottom layer 31 is short fiber reinforced rubber SFRR, and the diameter of the short fiber reinforced rubber SFRR ranges from 0.2 μm to 0.3 μm, and the length ranges from 100 μm to 200 μm.

In a particular embodiment, the short fibers are mixed into the NR to make a masterbatch and a coupling agent is added during mixing to facilitate the binding of the short fibers to the NR.

When the automobile tire bead reinforcing structure works specifically, the reinforcing bottom layer 31 and the triangular rubber 2 are adhered together by the tire bead reinforcing structure 3 through the adhesive glue, then the tire bead reinforcing structure 3 bypasses the bottom of the tire bead core 6 and is turned upwards, the tire bead carries the reinforcing structure 3 to work together, the structural characteristic of the tire bead reinforcing structure 3 per se enables the hardness of the tire bead to be enhanced, and the safety performance of the automobile in the driving process is improved.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a pneumatic tire's child lip reinforcement structure, pneumatic tire's child lip sets up on side wall (7), and the child lip includes inner liner (1), apex (2), curtain cloth turn-up (5), carcass ply (4) and child lip core (6), and each part sets up on inner liner (1), its characterized in that: the bead reinforcing structure (3) is disposed on the carcass ply (4), and the bead reinforcing structure (3) includes a reinforcing bottom layer (31) and a reinforcing mesh (32) disposed on the reinforcing bottom layer (31).

2. The bead reinforcing structure for a pneumatic tire as claimed in claim 1, wherein: the bead reinforcing structure (3) is a reinforcing rib structure, and the reinforcing rib structure is made of reinforced rubber.

3. The bead reinforcing structure for a pneumatic tire as claimed in claim 2, wherein: the bead reinforcing structure (3) bypasses the bottom of the bead core (6) and is turned upwards.

4. The bead reinforcing structure for a pneumatic tire as claimed in claim 1, wherein: the reinforcing grids (32) are criss-cross filament rectangular grids, and the cross section diameter of each single filament rectangular grid ranges from 0.13mm to 1.0 mm.

5. The bead reinforcing structure for a pneumatic tire as claimed in claim 4, wherein: the thickness range of the reinforced grid (32) is 1.6mm-2.3mm, and the length range is 10mm-100 mm.

6. The bead reinforcing structure for a pneumatic tire as claimed in claim 1, wherein: the reinforcing bottom layer (31) is bonded to the apex (2) by an adhesive gum, and the adhesive gum is a strong rubber adhesive EA.

7. The bead reinforcing structure for a pneumatic tire as claimed in claim 6, wherein: the thickness range of the reinforced bottom layer (31) is 0.4mm-1.3mm, and the length range is 10mm-100 mm.

8. The bead reinforcing structure of a pneumatic tire as claimed in any one of claims 1 to 6, wherein: the position range of the reinforced bottom layer (31) above the bead core (6) is 2mm-10 mm.

9. The bead reinforcing structure for a pneumatic tire as claimed in claim 8, wherein: the staggered distance between the upper end of the bead reinforcing structure (3) and the upper end of the triangular rubber (2) is at least 2 mm.

10. The bead reinforcing structure for a pneumatic tire as claimed in claim 1, wherein: the material of the reinforced bottom layer (31) is short fiber reinforced rubber SFRR, the diameter range of the short fiber reinforced rubber SFRR is 0.2-0.3 μm, and the length range is 100-200 μm.