WO2013091255A1 - Pneumatic tyre structure - Google Patents

Abstract

Disclosed is a pneumatic tyre structure. The tyre (1) comprises a tread (10), edges (11) located on the two sides of the tread (10), shoulders (12) adjacent to the tread (10) and the edges (11), and a bead (13) located at the bottom of the edges (11) and fitted to a rim (2). An air vent hole (14) is provided on the edges (11) of the tyre (1), and an inflation valve (3) is fitted on the air vent hole (14) hermetically. The present invention prevents damage to the inflation valve (3) assembly from foreign objects after the tyre (1) is worn by driving, increases the spatial compactness of the fitting system for the entire tyre while guaranteeing the hermetical requirement for the pneumatic tyre (1) during driving and the driving safety, and facilitates practical operations and carrying by a user.

Description

Pneumatic tire structure Technical field

 The present invention relates to a pneumatic tire, and more particularly to a pneumatic tire structure that achieves inflation directly on a carcass.

Background technique

With the rapid development of the slow-vehicle industry in the market, structurally optimized vehicles have become a new direction of market development. As an important component of vehicles, tires have become a new trend in structural optimization.

At present, the commonly used tire structure adopts the conventional assembly method of the tire and the rim, and a hole is arranged on the rim to install the valve to inflate the tire, which will cause a certain waste of the spoke space for the space which cannot fully utilize the rim.

In order to optimize the structure of the vehicle, new market demands to install brake discs, batteries and other parts on the rim to save space, but it is easy to cause the following problems: the installation of each accessory is difficult, the operation efficiency is low; the valve is prone to deformation and damage, affecting the use Safety; it is easy to cause difficulty in inflation during actual operation, which affects the actual operation. In order to make full use of the space of the rim, the valve is not provided on the rim, and it is sought to install the valve assembly in other suitable parts of the tire for inflation, so that the tire can be easily and smoothly inflated, and can meet the safety and load of the tire. The requirements of airtightness and wear and tear are the design of the present invention.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pneumatic tire structure for tire inflation directly in a tire carcass, which improves the spatial compactness of the overall tire assembly system on the basis of ensuring convenient inflation and safe use.

To achieve the above object, the solution of the present invention is:

A pneumatic tire structure comprising a tread portion, a bead portion on both sides of the tread portion, a shoulder portion adjacent to the tread and the bead, and a bead portion at a bottom end of the bead portion and engaging the rim, wherein A vent hole is provided on the bead of the tire, and a valve is sealed on the vent hole.

The valve is formed in a rubber seat, and the rubber seat of the valve is combined with the tire when the tire is formed.

The rubber seat has a core cavity for accommodating the valve, the upper part of the rubber seat forms a cylinder body, and a thick to thin end edge extends outwardly at the bottom of the cylinder body, and the upper surface of the end edge forms downward from the inner side to the outer side. The slope.

The mating surface of the rubber seat and the tire is a rough surface.

The outer surface of the outer surface of the rubber post and the upper surface of the end edge are rough surfaces with roughened surfaces.

The valve body comprises a nozzle body, a core rod, a core cap, a core body, a core sealing ring, a core spring, a core seat sealing ring and a core seat; the core body core sealing ring seal Fitted in the mouth; the core rod is placed around the core and then connected to the core seat, and the upper end of the core seat is fitted with the core seat sealing ring to cover the lower end surface of the core body, and the core cap is connected with the core body and Cooperate with the mouth to limit the core rod.

The vent hole is disposed at a bead portion from the bead core to be 10% to 50% of the height of the tire section.

The position of the vent hole at the bead portion is preferably 20% to 40% C from the bead core to the tire cross-sectional height.

The distance between the vent hole and the rim rim is not less than 8 mm.

After adopting the above scheme, the present invention prevents the damage of the foreign object to the valve assembly after the tire is worn after the tire is installed, so that the airtightness requirement and the driving safety during the running of the pneumatic tire are ensured. On the basis of sex, the space compactness of the tire assembly system is improved, and the user's actual operation and carrying are facilitated.

DRAWINGS

Figure 1 is a cross-sectional view showing the structure of a tire of the present invention;

Figure 1A is a partial enlarged view of Figure 1;

Figure 2 is a cross-sectional view showing the structure of the valve assembly of the present invention;

Figure 3 is a cross-sectional view showing the structure of the valve body of the present invention;

Figure 4 is a cross-sectional view showing the structure of the valve protective cover of the present invention;

Figure 5 is a schematic view showing the sealing state of the valve of the present invention;

Figure 6 is a schematic view showing the state of inflation or exhaust of the valve of the present invention;

Figure 7 is a schematic view showing the state of inflation of the tire of the present invention

Fig. 7A is a partial enlarged view of Fig. 7.

detailed description

As shown in FIGS. 1 and 1A, the present invention discloses a pneumatic tire structure that can be directly inflated in a tire carcass. The tire 1 includes a tread portion 10 that is mainly in contact with the ground, and tires on both sides of the tread portion 10. The side portion 11, the shoulder portion 12 connecting the tread portion 10 and the bead portion 11, and a pair of bead portions 13 that are fitted to the rim 2 are provided with a bead core 15 in the bead portion 13.

The key to the invention is that a venting opening 14 is provided in the bead portion 11 of the tire 1 in communication with the tire, and the valve 3 engages the sealing means in sealing engagement with the venting opening 14. The sealing device exemplified here is a rubber seat 4 which is made of a material similar to the material of the tire, and has the characteristics of soft elasticity and easy engagement with the tire; of course, the sealing device is not limited to the rubber seat 4 Other structures can also be used.

As shown in FIG. 2, FIG. 5 and FIG. 6 , the rubber seat 4 is disposed corresponding to the vent hole 14 and has a core cavity for accommodating the valve 3 . The upper portion of the rubber seat 4 forms a column 41 and fits into the vent hole 14 . Extending outwardly from the bottom of the cylinder 41 is a thick to thin end edge 42 that forms a downwardly sloped surface from the inner surface to the outer surface of the inner surface of the cylinder 42 to utilize the end edge 42 to conform to the inner wall of the tire.

When the valve is matched with the tire, the valve 3 is first placed in the rubber mold and integrally formed in a rubber seat 4 to form a valve assembly, and the rubber seat 4 with the valve 3 is placed on the tire. The vent hole of the mold is combined with the tire during the molding of the tire to achieve the sealing engagement between the valve and the tire; in order to achieve the best combination of the rubber seat 4 and the tire 1, the cooperation between the rubber seat 4 and the tire 1 The surface is subjected to a roughening process, that is, the outer surface of the cylinder 4 and the upper surface of the end edge 42 are rough surfaces.

As shown in FIG. 3 and in conjunction with FIGS. 1, 2, 5, and 6, the valve 3 structure exemplified herein includes a nozzle body 31, a core rod 32, a core cap 33, a core body 34, and a core body. a sealing ring 35, a core spring 36, a core seat sealing ring 37 and a core seat 38;

The nozzle body 31 is a cylinder body, and a lower portion thereof is formed with a constriction, and an inner thread 311 is disposed on the inner surface of the cylinder body; the core body 34 is sleeved and sealed with the core body sealing ring 35 in the nozzle body 31; and the core rod 32 is a sleeve core The spring 36 is inserted into the bottom of the core 34 and connected to the core seat 38. The upper end of the core seat 38 is fitted with the core seat sealing ring 37 to cover the lower end surface of the core body 34. The lower end of the core spring 36 is held in the core body 34. The upper end is held on the core rod 32, and finally the core cap 33 is fitted on the core body 31 to limit the core rod 32, while the upper end of the core rod 32 protrudes beyond the core cap 33; the periphery of the core cap 33 An external thread is formed to operatively engage the internal thread 311 of the nozzle body 31.

The core rod 32 of the assembled valve 3 is under the action of the core spring 36. In the normal state, the core rod 32 pulls the core seat 38 to the bottom end of the core 34 in a sealed state, as shown in FIG. The valve 3 at this time is in a sealed state.

As shown in Figures 6, 7, and 7A, when the tire needs to be inflated or vented, the ejector pin 61 of the inflator 6 is used to push the core rod 32 of the valve 3, and the core rod 32 pushes the core seat 38 toward the inside of the tire. Moving, the core seat 38 is disengaged from the core 34, and the core spring 36 is in a compressed energy storage state, and the gas can smoothly enter and exit the tire through the core 34. When the tire is inflated or exhausted, The action of the inflator 6 on the valve 3 is released, and the core 32 of the valve 3, under the action of the return of the core spring 36, pulls the core seat 38 to seal the core 34, preventing gas from being discharged from the tire.

As shown in FIG. 4 and in conjunction with FIGS. 1 and 2, a movable cover 5 is further provided at the valve 3 of the tire 1 to prevent foreign matter from entering the valve 3, and has a protective effect on the valve 3. The lower part of the cover 5 forms an external thread 51 to cooperate with the nozzle body 31, and the upper part is provided with a notch 52 for tool operation. The cover 5 needs to cooperate with the tire 1 in cooperation with the sealing ring 53 to further prevent the tire from leaking.

Further, as shown in FIG. 1, in order to ensure the safety performance and the service life of the tire when used, the distance of the valve member 3 at the position of the bead portion 11 (i.e., the position of the vent hole 14) from the bead core 15 is B, B is designed to be 10% to 50% of the height C of the tire section, preferably 20% to 40% C. The distance A between the valve member 3 assembly and the rim of the rim 2 is set to be not less than 8 mm in consideration of the convenience of the user's actual inflation operation. When the 10% C of the tire 1 is less than 8 mm, the distance A between the valve 3 assembly and the rim 2 of the rim 2 is set to 8 mm; when the 10% C of the tire is not less than 8 mm, the rim of the valve 3 and the rim of the rim 2 The distance A is set to be greater than 8 mm. When the distance A of the valve 3 assembly from the rim of the rim 2 is less than 8 mm, the actual inflation of the tire will be affected.

The invention provides a valve assembly on the sidewall of the tire, so that the tire avoids the damage of the foreign object to the valve assembly after running and wear, and at the same time, the heat generated during the running of the tire is small, and the heat rise and temperature rise can be effectively avoided. The phenomenon that the valve assembly separates from the tire. Therefore, on the basis of ensuring the airtightness requirement of the pneumatic tire running process and the safety of driving, the space compactness of the overall assembly system of the tire is improved, and the actual operation and carrying of the user are facilitated.

Claims (9)

A pneumatic tire structure comprising a tread portion, a bead portion on both sides of the tread portion, a shoulder portion adjacent to the tread and the bead, and a bead portion at the bottom end of the bead portion and engaging the rim The utility model is characterized in that a vent hole is arranged on the bead of the tire, and a valve is sealed on the vent hole. 2. A pneumatic tire structure according to claim 1, wherein said valve is formed in a rubber seat, and the rubber seat of the valve is combined with the tire when the tire is formed. 3. The pneumatic tire structure according to claim 2, wherein the rubber seat has a core cavity for accommodating the valve, and the upper portion of the rubber seat forms a cylinder, and extends outward at the bottom of the cylinder. A thick to thin end edge, the upper surface of which forms a downward slope from the inside to the outside. 4. A pneumatic tire structure according to claim 1 or 2, wherein the mating surface of the rubber seat and the tire is a rough surface. 5. A pneumatic tire structure according to claim 3, wherein the outer surface of the outer surface of the rubber post and the upper surface of the end edge are roughened surfaces. The pneumatic tire structure according to claim 1, 2 or 3, wherein the valve body comprises a nozzle body, a core rod, a core cap, a core body, and a core sealing ring. a core spring, a core seat sealing ring and a core seat; the core body core sealing ring is sealed and fitted in the mouth body; the core rod is placed around the core body and connected to the core seat by the core rod, the core The upper end of the seat is matched with the core seat sealing ring to cover the lower end surface of the core body, and the core cap is connected with the core body and cooperates with the mouth body to limit the core rod. 7. A pneumatic tire structure according to claim 1, wherein said venting opening is disposed at a bead portion from 10% to 50% of the height of the tire cross-section of the bead core. A pneumatic tire structure according to claim 1, wherein said vent hole is disposed at a bead portion distance from the bead core to a tire cross-sectional height of preferably 20% to 40% C. 9. A pneumatic tire structure according to claim 8, wherein the distance between the vent hole and the rim rim is not less than 8 mm.

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