Sealing structure of external air pipe product

Abstract

The utility model provides a sealing structure of an external air pipe product, which relates to the technical field of sealing connection and comprises a flexible sealing ring, the flexible sealing ring comprises an air pipe connecting part and a shell connecting part, the shell connecting part is arranged around the rear end of the air pipe connecting part, and an inner hole of the air pipe connecting part is trumpet-shaped. An air pipe can penetrate through an inner hole of the air pipe connecting part and is in interference fit with the inner hole of the air pipe connecting part, an annular clamping groove is formed in the side wall of the shell connecting part, the edge of an installation hole in a product shell can be clamped into the clamping groove, and a groove is formed in the outer surface of the shell connecting part and surrounds the air pipe connecting part. And a movable thin-wall structure is formed at the joint of the air pipe connecting part and the shell connecting part. The utility model has the beneficial effects that the thin-wall structure generates adaptive deformation when the air pipe displaces, so that the shell connecting part is prevented from being driven to fall off, the problem that the sealing ring falls off due to the displacement of the air pipe is solved, and a good sealing effect can be kept for a long time; the device is good in universality, easy to install, not limited by product specifications and models, and suitable for various products.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing connection, in particular to a sealing structure of an external air pipe product. Background Art

[0002] Automobiles, ships, factories and other products all need to be equipped with external air pipes. In order to solve the sealing problem between the external air pipe and the product shell, pressure plate type, internal fixed type and sealant plugging type sealing rings are generally used for sealing connection. Although these sealing rings can solve the sealing problem of the connection when the external air pipe is installed, the external air pipe will often be displaced during subsequent work, causing the sealing ring to loosen, resulting in failure of the seal at the connection, affecting the sealing performance of the product. Utility Model Content

[0003] In view of this, in order to solve the problem that the external air pipe often moves during subsequent work, resulting in failure of the seal at the connection, an embodiment of the utility model provides a sealing structure for an external air pipe product.

[0004] An embodiment of the utility model provides a sealing structure of an external air pipe product, which is used for sealingly connecting a product shell and an air pipe, and includes a flexible sealing ring. The flexible sealing ring includes an integrally formed air pipe connecting portion and an outer shell connecting portion. The outer shell connecting portion is arranged around the rear end of the air pipe connecting portion. The inner hole of the air pipe connecting portion is trumpet-shaped. The air pipe can pass through the inner hole of the air pipe connecting portion and has an interference fit with the inner hole of the air pipe connecting portion. The side wall of the outer shell connecting portion is provided with an annular groove, and the groove can be used for the edge of the mounting hole on the product shell to be inserted. The outer surface of the outer shell connecting portion is provided with a groove around the air pipe connecting portion, so that the connection between the air pipe connecting portion and the outer shell connecting portion forms a movable thin-walled structure.

[0005] Furthermore, the trachea connecting portion includes a tubular portion at the front and a flared portion at the rear, the tubular portion can be interference fit with the trachea, and the inner diameter of the flared portion gradually increases from front to back.

[0006] Furthermore, the groove is arc-shaped and is coaxially arranged with the trachea connecting portion.

[0007] Furthermore, the groove is formed by chamfering the connection between the shell connection part and the trachea connection part.

[0008] Furthermore, the shell connecting portion is in a truncated cone shape with a larger diameter at the front end and a smaller diameter at the rear end.

[0009] Furthermore, the thickness of the shell connecting portion is greater than the thickness of the trachea connecting portion.

[0010] Furthermore, the width of the slot gradually decreases from the slot bottom to the slot opening.

[0011] Furthermore, the flexible sealing ring is made of rubber.

[0012] Furthermore, the product housing includes a flat outer wall plate, and the mounting hole is arranged on the outer wall plate.

[0013] Furthermore, the product shell is a car body.

[0014] The beneficial effects brought about by the technical solution provided by the embodiment of the utility model are:

[0015] 1. The utility model provides a sealing structure for an external trachea product, wherein a flexible sealing ring is sealingly connected to the trachea through a trumpet-shaped trachea connecting portion, and is sealingly connected to a mounting hole on a product shell through a shell connecting portion, and a groove is provided between the trachea connecting portion and the shell connecting portion to form a movable thin-walled structure, and when the trachea is displaced, the thin-walled structure produces adaptive deformation to avoid causing the shell connecting portion to fall off, thereby solving the problem of the sealing ring falling off due to the displacement of the trachea, and maintaining a good sealing effect for a long time.

[0016] 2. The sealing structure of an external air pipe product of the utility model has good versatility, is easy to install, is not limited by product specifications and models, and is suitable for sealing installation of various products, such as automobile air pipes, ship air pipes, factory air pipes, etc.

[0017] 3. The sealing structure of an external air pipe product of the utility model has a simple structure, low cost and is convenient for mass production.

[0018] 4. The sealing structure of an external air pipe product of the utility model has a beautiful appearance after installation, the air pipes are arranged neatly, and it is safe to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the installation of a sealing structure of an external air pipe product of the utility model;

[0020] Figure 2 It is a schematic diagram of the sealing structure of an external air pipe product of the utility model.

[0021] In the figure: 1, flexible sealing ring; 11, air pipe connecting part; 111, tubular part; 112, flared part; 12, shell connecting part; 121, slot; 13, groove; 100, product shell; 100a, mounting hole; 200, air pipe; 300, valve body tube. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the following will further describe the implementation of the utility model in conjunction with the accompanying drawings. The following is a preferred embodiment of the utility model among multiple possible embodiments, which is intended to provide a basic understanding of the utility model, but is not intended to confirm the key or decisive elements of the utility model or limit the scope of protection.

[0023] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0024] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0026] It should 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0027] Please refer to Figure 1 and 2 An embodiment of the utility model provides a sealing structure of an external air pipe product, which is used to seal and connect a product housing 100 and an air pipe 200 when installing an external air pipe 200, and includes a flexible sealing ring 1. The flexible sealing ring 1 mainly includes an integrally formed air pipe connecting portion 11 and an outer shell connecting portion 12, which can generally be made of rubber material and integrally formed by injection molding.

[0028] The shell connection part 12 is arranged around the rear end of the trachea connection part 11. The inner hole of the trachea connection part 11 is trumpet-shaped. The trachea 200 can pass through the inner hole of the trachea connection part 11 and have an interference fit with the inner hole of the trachea connection part 11.

[0029] Specifically, the trachea connecting portion 11 includes a tubular portion 111 at the front and a flared portion 112 at the rear. The tubular portion 111 can be interference fit with the trachea 200. The inner diameter of the flared portion 112 gradually increases from front to back. The inner diameter of the front end of the flared portion 112 is the same as the inner diameter of the tubular portion 111. When the trachea 200 is inserted into the trachea connecting portion 11, it is interference fit with the inner hole of the tubular portion 111. Under the action of external air pressure, the tubular portion 111 and the trachea 200 maintain a strictly sealed state; at the same time, the trachea 200 does not contact the inner wall of the flared portion 112, and there is a gap so that the flared portion 112 can move.

[0030] The side wall of the shell connecting part 12 is provided with an annular groove 121, and the groove 121 can be used for the edge of the mounting hole 100a on the product shell 100 to be inserted to achieve extrusion sealing. The shell connecting part 12 is in the shape of a truncated cone with a large front diameter and a small rear diameter. The thickness of the shell connecting part 12 is greater than the thickness of the trachea connecting part 11, and the hardness of the shell connecting part 12 is greater than the hardness of the trachea connecting part 11, so that the shell connecting part 12 is not easy to deform and displace.

[0031] In order to ensure a better sealing effect after the slot 121 is clamped with the mounting hole 100a, the width of the slot 121 gradually decreases from the bottom to the slot mouth, so that the two sides of the slot 121 can fit more closely with the two side surfaces of the edge of the mounting hole 100a.

[0032] In addition, a groove 13 is provided on the outer surface of the shell connecting part 12 around the trachea connecting part 11, and the groove 13 is located at the front side of the flared part 112. The groove 13 enables the connection between the trachea connecting part 11 and the shell connecting part 12 to form a movable thin-walled structure, and the thin-walled structure is relatively soft and can adapt to a certain range of movement.

[0033] In some embodiments, the groove 13 is arc-shaped and is coaxially arranged with the trachea connecting portion 11. The groove 13 is formed by the rounded corners at the connection between the shell connecting portion 12 and the trachea connecting portion 11. When the trachea 200 is displaced, stress is concentrated on the thin-walled structure, so that the thin-walled structure is deformed and displaced to adapt to the displacement of the trachea 200.

[0034] It should be noted that the sealing structure of the external air pipe product can be applied to various products with an external air pipe 200 installed. The product housing 100 generally includes a flat outer wall plate, the mounting hole 100a is set on the outer wall plate, the flexible sealing ring 1 is installed at the mounting hole 100a through the card slot 121, and the air pipe 200 passes through the air pipe 200 for connection. If applied to a car, the product housing 100 is the car body, and the air pipe 200 can be connected to the valve body pipe 300 in the car through a connector after installation. It can be understood that the sealing structure of the external air pipe product can also be applied to products such as ships and factories.

[0035] In this article, the directional words such as front, back, top, and bottom involved are defined by the positions of the parts in the drawings and the positions of the parts relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that they are relative concepts and can change accordingly according to different ways of use and placement, and the use of the directional words should not limit the scope of protection claimed in this application.

[0036] In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other. The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sealing structure for an external air pipe product, used for sealing and connecting a product housing and an air pipe, characterized in that: It includes a flexible sealing ring, which includes an integrally formed trachea connecting part and a shell connecting part. The shell connecting part is arranged around the rear end of the trachea connecting part. The inner hole of the trachea connecting part is trumpet-shaped. The trachea can pass through the inner hole of the trachea connecting part and has an interference fit with the inner hole of the trachea connecting part. The side wall of the shell connecting part is provided with an annular groove, and the groove can be used for the edge of the mounting hole on the product shell to be inserted. The outer surface of the shell connecting part is provided with a groove around the trachea connecting part, so that the connection between the trachea connecting part and the shell connecting part forms a movable thin-walled structure.

2. The sealing structure of an external air pipe product according to claim 1, characterized in that: The trachea connecting portion comprises a tubular portion at the front and a flared portion at the rear. The tubular portion can be interference fit with the trachea, and the inner diameter of the flared portion gradually increases from front to back.

3. The sealing structure of an external air pipe product according to claim 1, characterized in that: The groove is arc-shaped and is coaxially arranged with the trachea connecting portion.

4. The sealing structure of an external air pipe product as claimed in claim 3, characterized in that: The groove is formed by the rounded corners of the connection between the shell connection part and the air pipe connection part.

5. The sealing structure of an external air pipe product according to claim 1, characterized in that: The shell connecting portion is in a truncated cone shape with a large diameter at the front end and a small diameter at the rear end.

6. The sealing structure of an external air pipe product according to claim 1, characterized in that: The thickness of the shell connecting portion is greater than the thickness of the trachea connecting portion.

7. The sealing structure of an external air pipe product according to claim 1, characterized in that: The width of the slot gradually decreases from the slot bottom to the slot opening.

8. The sealing structure of an external air pipe product according to claim 1, characterized in that: The flexible sealing ring is made of rubber.

9. The sealing structure of an external air pipe product according to claim 1, characterized in that: The product housing comprises a flat outer wall plate, and the mounting hole is arranged on the outer wall plate.

10. The sealing structure of an external air pipe product according to claim 9, characterized in that: The product shell is a car body.

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