A durable air-tight valve

Abstract

The utility model discloses a durable air valve with good air tightness, comprising an air valve body, a mounting slot is provided on the outer side of the bottom end of the air valve body, a protective ring is installed on the inner side of the mounting slot, the protective ring comprises a protective outer sleeve, the inner wall and upper and lower surfaces of the protective outer sleeve fit the inner surface of the mounting slot, a supporting inner ring is installed on the inner side of the protective outer sleeve, a plurality of mounting slots distributed in a circular array around the center of the circle are provided on the outer side of the supporting inner ring, and a supporting metal sheet is installed on the inner side of the mounting slot. The utility model installs a protective outer sleeve, a supporting inner ring, a supporting metal sheet and a supporting spring on the outer side of the bottom end of the air valve to avoid the valve being squeezed by the rim during driving, to avoid cracks or damage to the valve due to the squeezing of the rim, to ensure the good air tightness of the valve as a whole, to avoid air leakage of the tire during driving, and to ensure the safety of the vehicle during driving.

Description

Technical Field

[0001] The utility model relates to the technical field of air valves, in particular to an air valve with good durability and air tightness. Background Art

[0002] The valve is an independent valve body device that allows gas to enter the space of a tubeless tire or inner tube when it is opened, and then automatically closes and seals to preserve the gas and generate air pressure to prevent the gas from escaping from the tire or inner tube. In addition to solid tires, other tires or inner tubes that must be inflated need to use this device to inflate;

[0003] The valve stem is divided into American type, French type, English type, etc. according to its different structures. The valve stem is directly connected to the tire, airbag, and rubber ring. When injecting gas into the tire, airbag, or rubber ring, you need to open the closed sealing cover on the valve stem and then inflate. After inflation, the sealing cover needs to be reinstalled to ensure that the gas in the tire, airbag, or rubber ring will not leak out.

[0004] However, the valve stem is in direct contact with the vehicle's rim, and the tire is squeezed during driving, causing friction between the rim and the valve stem. Long-term friction causes cracks or damage to the valve stem, resulting in reduced airtightness of the valve stem or even air leakage. Therefore, this does not meet existing needs. We have proposed a durable and airtight valve stem. Utility Model Content

[0005] The purpose of the utility model is to provide a durable and airtight valve nozzle, so as to solve the problems proposed in the above-mentioned background technology that the valve nozzle is in direct contact with the rim of the vehicle, the tire is squeezed during the driving of the vehicle, and there is friction between the rim and the valve nozzle. Long-term friction causes cracks or damage to the valve nozzle, resulting in a decrease in the airtightness of the valve nozzle or even air leakage.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a durable and airtight valve, comprising a valve body, a mounting slot is provided on the outer side of the bottom end of the valve body, a protective ring is installed on the inner side of the mounting slot, the protective ring comprises a protective sleeve, the inner wall and upper and lower surfaces of the protective sleeve are in contact with the inner surface of the mounting slot, a supporting inner ring is installed on the inner side of the protective sleeve, a plurality of mounting slots distributed in a circular array around the center of the support inner ring are provided on the outer side of the supporting inner ring, a supporting metal sheet is installed on the inner side of the mounting slot, the supporting metal sheet is made of aluminum alloy and the top and bottom ends are inclined toward the outer side of the protective sleeve.

[0007] Preferably, a protrusion is provided on the inner side of the protective jacket, and the protrusion is completely fitted with the supporting metal sheet.

[0008] Preferably, a support spring is installed between the support metal sheet and the support inner ring, and two ends of the support spring are respectively fixed to the support metal sheet and the support inner ring.

[0009] Preferably, an air intake channel is provided inside the valve body, the top of the air intake channel is flush with the top of the valve body, and the bottom of the air intake channel is flush with the bottom of the valve body.

[0010] Preferably, a piston chamber is provided in the middle of the valve body, and the diameter of the piston chamber is twice the diameter of the intake passage.

[0011] Preferably, a sealing piston is slidably mounted on the inner side of the piston chamber, a guide rod is inserted and fixed through the interior of the sealing piston, and a sealing spring is provided on the outer side of the bottom end of the guide rod.

[0012] Preferably, the inner diameter of the sealing spring is larger than the diameter of the air intake passage and smaller than the diameter of the piston chamber, and the sealing spring presses the sealing piston onto the top of the piston chamber.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model installs a protective ring composed of a protective outer sleeve, a supporting inner ring, a supporting metal sheet and a supporting spring on the outer side of the bottom end of the valve mouth, so as to avoid the valve mouth being squeezed by the rim during driving, and to avoid cracks or damage to the valve mouth due to the squeezing of the rim, thereby ensuring the good air tightness of the valve mouth as a whole, avoiding air leakage of the tire during driving, and ensuring the safety of the vehicle during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a structural cross-sectional view of the valve body of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the protective ring of the utility model;

[0018] Figure 4 This is a structural sectional view of the protective jacket of the utility model.

[0019] In the figure: 1. Valve body; 2. Protective ring; 21. Protective jacket; 22. Support inner ring; 23. Mounting groove; 24. Support metal sheet; 25. Support spring; 3. Inlet channel; 4. Mounting slot; 5. Piston compartment; 6. Sealing piston; 7. Sealing spring; 8. Guide rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] like Figure 1 , Figure 3 and Figure 4 As shown, a durable air valve with good air tightness is provided, a mounting slot 4 is provided on the outer side of the bottom end of the valve body 1, a protective ring 2 is installed on the inner side of the mounting slot 4, the protective ring 2 includes a protective sleeve 21, the inner wall and upper and lower surfaces of the protective sleeve 21 fit the inner surface of the mounting slot 4, a supporting inner ring 22 is installed on the inner side of the protective sleeve 21, a plurality of mounting slots 23 distributed in a circular array around the center of the circle are provided on the outer side of the supporting inner ring 22, a supporting metal sheet 24 is installed on the inner side of the mounting slot 23, the supporting metal sheet 24 is made of aluminum alloy and the top and bottom ends are inclined toward the outer side of the protective sleeve 21, the protective sleeve 21, the supporting metal sheet 24 and the supporting inner ring 22 are used to isolate the valve body 1 from the rim, so as to prevent the rim from squeezing the valve body 1 and causing cracks or damage to the valve body 1.

[0022] A protrusion is provided on the inner side of the protective jacket 21, and the protrusion is completely fitted with the supporting metal sheet 24. A supporting spring 25 is installed between the supporting metal sheet 24 and the supporting inner ring 22. The two ends of the supporting spring 25 are respectively fixed to the supporting metal sheet 24 and the supporting inner ring 22. The supporting spring 25 is utilized to provide a buffer between the supporting metal sheet 24 and the supporting inner ring 22 to ensure that the inner ring and outer ring of the protective jacket 21 are respectively fitted with the valve body 1 and the rim, and to ensure that no gap appears at the connection between the valve body 1 and the rim, thereby avoiding tire leakage.

[0023] like Figure 1 and Figure 2 As shown, an air intake channel 3 is provided inside the valve body 1, and the top of the air intake channel 3 is flush with the top of the valve body 1, and the bottom of the air intake channel 3 is flush with the bottom of the valve body 1. A piston chamber 5 is provided in the middle of the valve body 1, and the diameter of the piston chamber 5 is twice the diameter of the air intake channel 3. A sealing piston 6 is installed on the inner side of the piston chamber 5 for sliding up and down. A guide rod 8 is inserted and fixed through the inside of the sealing piston 6, and a sealing spring 7 is provided on the outer side of the bottom end of the guide rod 8. The inner diameter of the sealing spring 7 is larger than the diameter of the air intake channel 3 and smaller than the diameter of the piston chamber 5. The sealing spring 7 squeezes the sealing piston 6 to the top of the piston chamber 5, and the sealing spring 7, the sealing piston 6 and the guide rod 8 are used to seal the connection between the piston chamber 5 and the air intake channel 3 to prevent the internal gas of the components connected to the valve body 1 from leaking outward.

[0024] Working principle: The protective ring 2 composed of the protective outer sleeve 21, the supporting inner ring 22, the supporting metal sheet 24 and the supporting spring 25 is installed on the inner side of the mounting slot 4, and the protective ring 2 is used to isolate the valve body 1 from the rim. During the driving of the vehicle, the tire is squeezed due to the weight of the vehicle. As the tire runs, the rim and the protective ring 2 are squeezed. At this time, the rim squeezes the protective outer sleeve 21 and the supporting metal sheet 24 toward the valve body 1, and the supporting metal sheet 24 compresses the supporting spring 25 after being squeezed, so as to buffer and offset the squeezing force of the rim on the supporting metal sheet 24 and the protective outer sleeve 21, thereby reducing the rim. The pressure on the protective ring 2 slows down the damage rate of the protective ring 2 and prevents the valve body 1 from being squeezed by the rim and causing cracks or damage. When using the valve body 1 to inflate, it is only necessary to connect the air pipe of the air pump to the top of the valve body 1 and then transport gas to the inside of the intake channel 3. After the gas enters the intake channel 3, it squeezes the sealing piston 6 downward, causing the sealing piston 6 to move downward and squeeze the sealing spring 7. After the sealing piston 6 moves downward, the previously closed top of the piston chamber 5 will be unblocked, and the airflow enters the piston chamber 5 along the intake channel 3 and flows out from the bottom of the intake channel 3, thereby realizing the normal use of the valve body 1 and the injection of gas into objects.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A durable air valve with good air tightness, comprising an air valve body (1), characterized in that: The bottom outer side of the valve body (1) is provided with a mounting slot (4), the inner side of the mounting slot (4) is provided with a protective ring (2), the protective ring (2) comprises a protective sleeve (21), the inner wall and the upper and lower surfaces of the protective sleeve (21) are fitted with the inner surface of the mounting slot (4), the inner side of the protective sleeve (21) is provided with a supporting inner ring (22), the outer side of the supporting inner ring (22) is provided with a plurality of mounting slots (23) distributed in a circular array around the center of the circle, the inner side of the mounting slot (23) is provided with a supporting metal sheet (24), the supporting metal sheet (24) is made of aluminum alloy, and the top and bottom ends are inclined toward the outer side of the protective sleeve (21).

2. A durable and airtight valve according to claim 1, characterized in that: The inner side of the protective jacket (21) is provided with a protrusion, and the protrusion is completely fitted with the supporting metal sheet (24).

3. A durable and airtight valve according to claim 2, characterized in that: A support spring (25) is installed between the support metal sheet (24) and the support inner ring (22), and two ends of the support spring (25) are respectively fixed to the support metal sheet (24) and the support inner ring (22).

4. A durable and airtight valve according to claim 1, characterized in that: An air intake channel (3) is provided inside the air valve body (1), the top end of the air intake channel (3) is flush with the top end of the air valve body (1), and the bottom end of the air intake channel (3) is flush with the bottom end of the air valve body (1).

5. A durable and airtight valve according to claim 4, characterized in that: A piston chamber (5) is provided in the middle of the valve body (1), and the diameter of the piston chamber (5) is twice the diameter of the air intake passage (3).

6. A durable and airtight valve according to claim 5, characterized in that: A sealing piston (6) is slidably mounted on the inner side of the piston chamber (5) up and down, a guide rod (8) is inserted and fixed through the interior of the sealing piston (6), and a sealing spring (7) is provided on the outer side of the bottom end of the guide rod (8).

7. A durable and airtight valve according to claim 6, characterized in that: The inner diameter of the sealing spring (7) is larger than the diameter of the air intake passage (3) and smaller than the diameter of the piston chamber (5), and the sealing spring (7) presses the sealing piston (6) onto the top of the piston chamber (5).

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