WO2024103306A1

WO2024103306A1 - Tubeless valve stem

Info

Publication number: WO2024103306A1
Application number: PCT/CN2022/132342
Authority: WO
Inventors: 苏清林
Original assignee: 昆山富洛汽车配件有限公司
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2024-05-23

Abstract

A tubeless valve stem, comprising a threaded rod (2) and a core rod (6). A base (9) is arranged at the tail of the threaded rod (2); a slot (10) is formed in the center of the bottom of the base (9); a hollow channel (11) running through the whole threaded rod (2) is formed in the slot (10); an end of the core rod (6) extends into the hollow channel (11) of the threaded rod (2) from the base (9); the tail of the core rod (6) is slidably connected in the slot; an end of the threaded rod (2) is connected to a sealing cap (1) used for sealing an upper end opening of the hollow channel (11); a locknut (3) is screwed on the rod body of the threaded rod (2); the threaded rod (2) passes through a rim and is then fixed on the rim by means of press fitting between the locknut (3) and the base (9). A coreless design is used, such that in an entire repairing and inflating process, there is no need to disassemble a valve core, the operation is convenient, and the efficiency is higher.

Description

Tubeless air valve

Technical Field

The utility model belongs to the technical field of air valves, and particularly relates to a tubeless air valve.

Background technique

The valve is a one-way valve used to inflate and release the gas in the tire and maintain the air pressure in the tire. Nowadays, the tires used in cars are all linerless tires. The valve and the tire are separated from each other in structure, and the valve is installed on the rim to play its role.

During the driving process, the tire may be punctured by sharp objects and cause air leakage. As a temporary emergency remedy, you need to inject tire repair fluid into the tire through the valve nozzle to repair the leak. Tire repair fluid is a white foamy liquid stored in a compressed gas tank. You only need to press the nozzle and the tire repair fluid will be injected into the tire through the valve nozzle. During the driving process, the tire repair fluid will evenly cover the inside of the tire and can be repaired after solidification.

When injecting tire sealant, firstly, you need to use a special valve core wrench to unscrew the valve core counterclockwise, then align the bottle mouth of the tire sealant with the valve nozzle and pour the tire sealant, or inject the tire sealant into the tire along the valve nozzle with a syringe, and finally screw the valve core back to the valve nozzle with the valve core wrench. It can be seen that the existing valve nozzle needs to remove the valve core when injecting tire sealant, and once the valve core wrench is lost, the tire sealant cannot be injected, which is very inconvenient.

In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it.

Technical Solutions

In view of the defects pointed out in the background technology, the purpose of the utility model is to provide a tubeless tire valve, removing the traditional valve core, so as to realize rapid repair of tires without disassembly.

To achieve the above purpose, the technical solution of the utility model is implemented as follows:

A tubeless air valve is fixed on a wheel rim and comprises a threaded rod and a core rod, wherein the core rod is a hollow rod, a base is provided at the tail of the threaded rod, a groove is provided in the middle of the bottom of the base, a hollow channel which runs through the entire threaded rod is provided in the middle of the groove, the end of the core rod extends from the base into the hollow channel of the threaded rod, the tail of the core rod is slidably connected in the groove, a sealing cap for sealing an upper port of the hollow channel is connected to the end of the threaded rod, a locking nut is screwed on the rod body of the threaded rod, the threaded rod passes through the wheel rim and is fixed to the wheel rim by pressing between the locking nut and the base.

As a preferred technical solution, a guide plate with a width greater than the diameter of the core rod is provided at the tail end of the core rod, and a through air inlet and exhaust port is provided on the end face of the guide plate. A through hole extending axially and connected to the air inlet and exhaust port is provided at the end of the core rod, and the guide plate is slidably connected in the groove.

As a preferred technical solution, the length of the core rod is greater than that of the threaded rod, the end of the core rod is provided with an external thread, the external thread is screwed with a limiting nut, and the sealing cap covers the limiting nut and is screwed to the end of the threaded rod.

As a preferred technical solution, two sets of opposite slide grooves are opened at the lower end of the hollow channel, and a slideway is formed between the two sets of slide grooves, and the guide plate slides up and down in the slideway.

As a preferred technical solution, a mounting shaft is arranged below the guide plate, a bottom bracket is arranged below the mounting shaft, and a sealing ring is sleeved on the outer side of the mounting shaft.

As a preferred technical solution, four groups of air holes connected to the grooves are arranged around the outer side of the base.

As a preferred technical solution, an arc groove is provided on the side of the locking nut facing the base, an O-ring is embedded in the arc groove, the threaded rod passes through the O-ring, a conical rubber pad is sleeved on the tail of the threaded rod, the rubber pad rests on the base with the tip facing the O-ring.

After adopting the above technical solution, the beneficial effects of the utility model are:

When filling the tire repair fluid, unscrew the sealing cap and turn the limit nut clockwise so that the core rod can slide up and down in the threaded rod. Aim the upper end of the core rod and fill the tire repair fluid. The tire repair fluid enters the tire along the through hole of the core rod. The repair is completed after the tire repair fluid solidifies. After the repair is completed, inflate the tire. Align the inflation end with the upper end of the core rod and fill the tire with compressed gas. When the pressure is sufficient, pull out the inflation end. Since the pressure inside the tire is much higher than the atmospheric pressure, the bottom support moves outward under the action of the tire pressure, causing the guide plate to be completely embedded in the grooves on both sides. The bottom support is embedded in the groove to prevent gas leakage, and then turn the limit nut counterclockwise so that the limit nut and the upper end of the threaded rod are against each other to fix the core rod, and finally screw on the sealing cap. Due to the coreless design, the entire repair and inflation process does not require the removal of the valve core, which is convenient to operate and more efficient.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

FIG1 is a schematic structural diagram of the utility model.

FIG. 2 is a schematic structural diagram of a locking nut.

FIG. 3 is a schematic diagram of the structure of a hollow threaded rod.

FIG. 4 is a schematic structural diagram of a core rod.

FIG. 5 is a schematic diagram of the installation of the core rod.

Markings in the figure: 1. Sealing cap, 2. Threaded rod, 3. Locking nut, 4. Rubber pad, 5. O-ring, 6. Core rod, 7. Anti-slip pattern, 8. Arc groove, 9. Base, 10. Groove, 11. Hollow channel, 12. Slide groove, 13. Air hole, 14. Limit nut, 15. Guide plate, 16. Mounting shaft, 17. Bottom support, 18. Inlet and outlet, 19. Through hole, 20. Sealing ring.

Embodiments of the present invention

The features and exemplary embodiments of various aspects of the utility model will be described in detail below. In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the utility model and are not configured to limit the utility model. For those skilled in the art, the utility model can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the utility model by showing examples of the utility model.

The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the utility model. In the description of the utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

As shown in FIGS. 1 to 5 , a tubeless valve is fixed on a wheel rim, and includes a hollow threaded rod 2 and a core rod 6 nested inside the threaded rod 2. A base 9 is provided at the tail of the threaded rod 2, a groove 10 is provided in the middle of the bottom of the base 9, four groups of air holes 13 connected to the groove 10 are arranged around the outer side of the base 9, and a hollow channel 11 that runs through the entire threaded rod 2 is provided in the middle of the groove 10. The core rod 6 is a hollow rod, and the end of the core rod 6 extends from the base 9 into the hollow channel 11 of the threaded rod 2, and the tail of the core rod 6 is slidably connected in the groove 10. A sealing cap 1 for sealing the upper end of the hollow channel 11 and the upper end of the core rod 6 is connected to the end of the threaded rod 2, and a locking nut 3 is screwed to the rod body of the threaded rod 2.

The locking nut 3 is provided with an arc groove 8 with a quarter-circle cross section on the side facing the base 9, and an O-ring 5 is embedded in the arc groove 8, through which the threaded rod 2 passes. A conical rubber pad 4 is sleeved on the tail of the threaded rod 2, and the rubber pad 4 is against the base 9 with the tip facing the O-ring 5. When the valve is installed, the threaded rod 2 passes through the inner side of the wheel rim, the base 9 is aligned with the inner side of the wheel rim, and the locking nut 3 is aligned with the outer side of the wheel rim. The threaded rod 2 is fixed on the wheel rim through the compression between the locking nut 3 and the base 9, and the O-ring 5 and the rubber pad 4 increase the sealing of the connection to prevent air leakage.

The length of the core rod 6 is greater than that of the threaded rod 2. The end of the core rod 6 is provided with an external thread, which is screwed with a limit nut 14. The sealing cap 1 covers the limit nut 14 and is screwed on the end of the threaded rod 2. The tail of the core rod 6 is provided with a guide plate 15 whose width is greater than the diameter of the core rod 6. The core rod 6 is limited inside the threaded rod 2 by the cooperation between the limit nut 14 and the guide plate 15. The end surface of the guide plate 15 is provided with a through inlet and outlet port 18. The enlargement of the inlet and outlet port 18 speeds up the inlet and outlet speed. The end of the core rod 6 is provided with a through hole 19 extending axially and connected to the inlet and outlet port 18. The guide plate 15 is slidably connected in the groove 10. Two sets of opposite slide grooves 12 are provided at the lower end of the hollow channel 11. A slideway is formed between the two sets of slide grooves 12. The guide plate 15 slides up and down in the slideway. A mounting shaft 16 is provided below the guide plate 15. A bottom bracket 17 is provided below the mounting shaft 16. A sealing ring 20 is sleeved on the outer side of the mounting shaft 16.

When filling the tire repairing liquid, unscrew the sealing cap 1, turn the limiting nut 3 clockwise, so that the core rod 6 can slide up and down in the threaded rod 2, align the upper end of the core rod 6 to fill the tire repairing liquid, and the tire repairing liquid enters the tire along the through hole 19 of the core rod 6. After the tire repairing liquid solidifies, the tire is inflated, and the inflation end is aligned with the upper end of the core rod 6 to fill the tire with compressed gas. When the pressure is sufficient, pull out the inflation end. Since the pressure in the tire is much higher than the atmospheric pressure, the bottom support 17 moves outward under the action of the tire pressure, so that the guide plate 15 is completely embedded in the grooves 12 on both sides. The bottom support 17 is embedded in the grooves 12 to prevent gas leakage, and then the limiting nut 3 is turned counterclockwise so that the limiting nut 3 is against the upper end of the threaded rod 2 to fix the core rod 6, and finally the sealing cap 1 is screwed on.

According to the embodiments of the utility model as described above, these embodiments do not describe all technical details in detail, nor do they limit the utility model to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can make good use of the utility model and the modified use based on the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

A tubeless air valve, fixed on a wheel rim, characterized in that it comprises a threaded rod (2) and a core rod (6), the core rod (6) being a hollow rod, a base (9) being arranged at the tail of the threaded rod (2), a groove (10) being arranged in the middle of the bottom of the base (9), a hollow passage (11) penetrating the entire threaded rod (2) being arranged in the middle of the groove (10), an end of the core rod (6) extending from the base (9) into the hollow passage (11) of the threaded rod (2), the tail of the core rod (6) being slidably connected in the groove (10), a sealing cap (1) being connected to the end of the threaded rod (2) for sealing an upper end of the hollow passage (11), a locking nut (3) being screwed onto the rod body of the threaded rod (2), the threaded rod (2) passing through the wheel rim and being fixed to the wheel rim by pressing between the locking nut (3) and the base (9).
A tubeless air valve according to claim 1, characterized in that: a guide plate (15) having a width greater than the diameter of the core rod (6) is provided at the tail end of the core rod (6), a through air inlet and air outlet (18) is provided on the end face of the guide plate (15), a through hole (19) extending axially and connected to the air inlet and air outlet (18) is provided at the end of the core rod (6), and the guide plate (15) is slidably connected in the groove (10).
A tubeless air valve according to claim 2, characterized in that: the length of the core rod (6) is greater than the length of the threaded rod (2), the end of the core rod (6) is provided with an external thread, the external thread is screwed onto a limit nut (14), and the sealing cap (1) covers the limit nut (14) and is screwed onto the end of the threaded rod (2).
The tubeless air valve according to claim 2 is characterized in that: two sets of opposite slide grooves (12) are opened at the lower end of the hollow channel (11), a slideway is formed between the two sets of slide grooves (12), and the guide plate (15) slides up and down in the slideway.
A tubeless air valve according to claim 4, characterized in that: a mounting shaft (16) is arranged below the guide plate (15), a base (17) is arranged below the mounting shaft (16), and a sealing ring (20) is sleeved on the outer side of the mounting shaft (16).
The tubeless air valve according to claim 1, characterized in that: the outer side surface of the base (9) is surrounded by four groups of air holes (13) connected to the grooves (10).