CN219809409U - A sealing assembly for tire inflation and deflation systems - Google Patents

Abstract

The utility model discloses a sealing assembly used in a tire inflation and deflation system, which includes an oil and gas seal and an oil seal box. A number of oil seal lips are integrally formed on the inner ring surface of the oil and gas seal. The oil and gas seal is provided with an inner ring. In the air chamber with a ring opening, a stepped hole connected to the air chamber is provided in the middle of the outer wall of the oil and gas seal. There is an assembly step on the bottom surface of the oil seal box. The oil seal box is attached to the outer ring surface of the oil and gas seal. There is a stepped hole in the middle of the outer wall of the oil and gas seal. There is a compressed air channel. The bottom surface of the oil seal box is provided with two circlip installation grooves. There are circlips snapped into the circlip installation grooves. An external air seal is provided on the inner wall of the opening of the air chamber. The outer side of the external air seal is integrated. Molded with sealing air lip. The structure of the utility model is reasonably arranged, which effectively improves the air tightness of the overall structure, has strong applicability and good practicability; grease is filled between the outer air seal and the inner wall of the air cavity, which is beneficial to reducing friction between the two. Improve the overall service life and have strong practicality.

Description

A sealing assembly for tire inflation and deflation systems

Technical field

The utility model belongs to the technical field of tire inflation and deflation systems, and specifically relates to a sealing assembly used in the tire inflation and deflation system.

Background technique

The tire inflation and deflation system, also known as the "central tire inflation and deflation system", refers to a complete system installed on a car and consisting of a compressed air source, a control circuit, a control air path, a rotary sealing air chamber and a tire valve. Used to adjust and monitor the air pressure of tires, and improve the driving performance of the car on different roads by controlling the air pressure in each tire to meet the different needs of wheel and tire pressure on different roads;

In the prior art, the patent with announcement number: CN202641270U discloses a technical solution for an "automatic inflating and deflating device for special vehicle tires". Although it can meet the use requirements in general situations, the existing oil and gas sealing device is a combination Seals, one seals grease oil and the other seals gas. On the air seal side, due to the lack of lubrication, the air seal basically operates in a dry friction state and the overall air tightness is not good, so the applicability and practicality are limited.

Contents of the invention

The purpose of this utility model is to provide a sealing assembly with reasonable structure and good air tightness for tire inflation and deflation systems.

The technical solution to achieve the purpose of the present utility model is a sealing assembly for a tire inflation and deflation system, which includes an oil and gas seal and an oil seal box. The inner ring surface of the oil and gas seal is integrally formed with several oil seal lips. The oil and gas seal is provided with an air cavity with an inner ring opening, the middle of the outer wall of the oil and gas seal is provided with a stepped hole connected to the air cavity, and the middle of the bottom surface of the oil seal box is integrally formed with an assembly step. The oil seal box is attached to the outer ring surface of the oil and gas seal, and the assembly step insert card is positioned in the step hole. A compressed air channel connected to the air chamber is provided in the middle of the oil seal box. The oil seal The bottom surface of the box is provided with two circlip installation grooves. There is a circlip in the circlip installation groove. The inner side of the circlip is attached to the upper part of the outer wall of the oil and gas seal. The inner wall of the opening of the air chamber An external air seal is provided, and a sealing air lip is integrally formed on the outer surface of the external air seal.

Grease is filled between the outer air sealing member and the inner wall of the air cavity.

An outer circular rubber sealing layer is adhered to the outer surface of the oil seal box.

The oil and gas seal is also provided with an outer spring and an inner spring, and the inner spring and the oil and gas seal are vulcanized as a whole.

The bottom of the step hole has an L-shaped reinforced metal frame that is bent inward.

There is a special-shaped reinforced metal frame on the inner wall of the air cavity.

The utility model has positive effects: the structure of the utility model is reasonably arranged, and through the oil seal box and the external air seal, the air tightness of the overall structure can be effectively improved, the use is smooth and reliable, the applicability is strong and the practicability is good; and It is filled with grease between the outer air seal and the inner wall of the air cavity, which is beneficial to reducing friction between the two, increasing the overall service life, and is highly practical.

Description of the drawings

In order to make the content of the present utility model easier to understand clearly, the utility model will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

Figure 1 is a schematic structural diagram of the utility model;

Figure 2 is an enlarged structural diagram of point A in Figure 1.

Reference signs: oil and gas seal 1, oil seal box 2, oil seal lip 3, air chamber 4, step hole 5, assembly step 6, compressed air channel 7, circlip installation groove 8, circlip 9, external air seal 10, Sealing air lip 11, grease 12, outer rubber sealing layer 13, L-shaped reinforced metal frame 14, outer spring 15, inner spring 16, special-shaped reinforced metal frame 17.

Detailed ways

This technical solution will now be further described in conjunction with the above-mentioned description and accompanying drawings. The specific description is as follows:

As shown in Figures 1 and 2, a sealing assembly for a tire inflation and deflation system includes an oil and gas seal 1 and an oil seal box 2. In this embodiment, the outer surface of the oil seal box is adhered to an outer circle. Rubber sealing layer 13. Several oil seal lips 3 are integrally formed on the inner ring surface of the oil and gas seal. In this embodiment, the above structure is a conventional structure in the prior art and is simply applied. Therefore, the oil and gas seal is not recorded in detail. An air chamber 4 with an inner ring opening is provided on it. In this embodiment, the shape of the air chamber is a convex shape. The middle part of the outer wall of the oil and gas seal is provided with a step hole 5 connected with the air chamber. In this embodiment , the step hole is a circular hole, which is mainly used to install and position the oil seal box, and for the entry of compressed air. In order to improve the strength and the contact area with the assembly step, the bottom of the step hole has an inward curve. L-shaped reinforced metal frame 14.

The middle part of the bottom surface of the oil seal box is integrally formed with an assembly step 6. During use, the oil seal box is attached to the outer ring surface of the oil and gas seal, and the assembly step is inserted and positioned in the step hole. , The middle part of the oil seal box is provided with a compressed air channel 7 connected with the air chamber. The bottom surface of the oil seal box is provided with two circlip installation grooves 8, and a circlip 9 is buckled in the circlip installation groove. The inner surface of the circlip is attached to the upper part of the outer wall of the oil and gas seal. An external air seal 10 is provided on the inner wall of the opening of the air chamber. A sealing air lip 11 is integrally formed on the outer surface of the external air seal. In order to ensure sealing performance, grease 12 is filled between the outer air sealing member and the inner wall of the air cavity.

The oil and gas seal is also provided with an outer spring 15 and an inner spring 16, and the inner spring and the oil and gas seal are vulcanized as a whole. In this embodiment, the inner spring is used to withstand air pressure.

There is a special-shaped reinforced metal frame 17 on the inner wall of the air cavity.

In this embodiment, the external air seal, the special-shaped metal frame, the inner spring, and the L-shaped reinforced metal frame are all integrated with the rubber vulcanization and bonding.

The structure of the utility model is reasonably arranged. Through the oil seal box and the external air seal, the air tightness of the overall structure can be effectively improved, and the use is stable and reliable, with strong applicability and good practicability; and the external air seal and the air cavity are The inner walls are filled with grease, which helps reduce friction between the two, improves the overall service life, and is highly practical.

The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the instructions can also be directly processed according to existing technical common sense. At the same time, the connection methods of each component adopt modern methods. There are mature conventional methods in the technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no detailed description will be made here.

Obviously, the above-mentioned embodiments of the present invention are only examples to clearly illustrate the present invention, and are not intended to limit the implementation of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. An exhaustive list of all implementations is neither necessary nor possible. However, these obvious changes or modifications derived from the essential spirit of the present utility model still belong to the protection scope of the present utility model.

Claims (6)

1. A sealing assembly for tire inflation and deflation systems, including an oil and gas seal and an oil seal box. The inner ring surface of the oil and gas seal is integrally formed with several oil seal lips. It is characterized in that: the oil and gas seal The component is provided with an air cavity with an inner ring opening, the middle part of the outer wall of the oil and gas sealing member is provided with a step hole connected to the air cavity, the middle part of the bottom surface of the oil seal box is integrally formed with an assembly step, and the oil seal box is attached Attached to the outer ring surface of the oil and gas seal, and the assembly step insert card is positioned in the step hole, a compressed air channel connected to the air chamber is provided in the middle of the oil seal box, and the bottom surface of the oil seal box Two circlip installation grooves are provided, and a circlip is buckled in the circlip installation groove. The inner side of the circlip is attached to the upper part of the outer wall of the oil and gas seal. The inner wall of the opening of the air chamber is provided with an outer circlip. Air sealing member, the outer surface of the external air sealing member is integrally formed with a sealing air lip. 2. A sealing assembly for a tire inflation and deflation system according to claim 1, characterized in that: the space between the external air sealing member and the inner wall of the air cavity is filled with grease. 3. A sealing assembly for a tire inflation and deflation system according to claim 2, characterized in that: an outer circular rubber sealing layer is adhered to the outer surface of the oil seal box. 4. A sealing assembly for a tire inflation and deflation system according to claim 3, characterized in that: the bottom of the step hole has an L-shaped reinforced metal frame that is bent inward. 5. A sealing assembly for a tire inflation and deflation system according to claim 4, characterized in that: the oil and gas seal is also provided with an outer spring and an inner spring, and the inner spring and the oil and gas seal are Vulcanized into a whole. 6. A sealing assembly for a tire inflation and deflation system according to claim 5, characterized in that: there is a special-shaped reinforced metal frame on the inner wall of the air cavity.