Quickly installed plastic pipe joint for automobile

Abstract

The utility model relates to the field of automobile plastic pipe joint, disclose a kind of quick installation's automobile plastic pipe joint, including metal ring, the left and right sides of the metal ring are all fixedly connected with annular, the end of the annular is provided with plastic pipe, the inside of the annular is slidably connected with the ring, the one end of the ring is inserted in the inside of plastic pipe, the one end of the ring inside is provided with sealing assembly, the sealing property between plastic pipe and annular is improved by sealing assembly, the top side of the outer wall of the ring is provided with positioning assembly, the position of the ring is fixed by positioning assembly, the left and right sides of the metal ring are all fixedly connected with bellows.The utility model makes the sealing effect of joint from material characteristics and structure design two aspects guarantee and ensure the sealing property of joint under various working conditions, and makes the joint can be quickly installed, avoids the inconvenience of installation and disassembly due to the need of special tool for installation and disassembly because of bolt and other fixing parts.

Description

Technical Field

[0001] This utility model relates to the field of automotive plastic pipe fittings, and more particularly to a quick-installation automotive plastic pipe fitting. Background Technology

[0002] Automotive plastic pipe fittings are key components used to connect various plastic pipes in automobiles, playing a vital role in systems such as fuel, cooling, and braking. Their main function is to ensure a tight connection between pipes, preventing leaks of media such as fuel, coolant, and brake fluid, while ensuring a stable flow of gas or liquid within the piping system. Through reliable connections, automotive plastic pipe fittings guarantee the normal operation of various automotive systems, and their performance directly affects the vehicle's safety, reliability, and lifespan.

[0003] However, current automotive plastic pipe fittings have the following defects: First, in terms of sealing, some fitting materials have poor temperature and corrosion resistance, and the structural design is simple, making it difficult to ensure sealing under complex working conditions such as high temperature and vibration; Second, in terms of installation convenience, they rely on fasteners such as bolts and require special tools, which makes installation and disassembly inconvenient and inefficient, and cannot meet the needs of rapid assembly and maintenance. In response to this technical problem, this application proposes a quick-installation automotive plastic pipe connector. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a quick-installation automotive plastic pipe connector. It aims to ensure the sealing effect of the connector from both material properties and structural design aspects, and to ensure the sealing performance of the connector under various working conditions. It also enables the connector to be installed quickly, avoiding the inconvenience of installation and disassembly caused by the need for special tools for installation and disassembly due to fasteners such as bolts.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A quick-installation automotive plastic pipe connector includes a metal ring, with circular rings fixedly connected to both sides of the metal ring. A plastic pipe is provided at the end of each circular ring, and a plug ring is slidably connected inside the circular ring. One end of the plug ring is inserted into the inside of the plastic pipe, and a sealing component is provided at one end of the plug ring to improve the sealing between the plastic pipe and the circular ring. A positioning component is provided on the top side of the outer wall of the plug ring to fix the position of the plug ring. Corrugated pipes are fixedly connected to both sides of the metal ring.

[0006] Furthermore, the sealing assembly includes two annular grooves formed at one end of the insert ring, wherein a sealing ring is fixedly connected inside one of the annular grooves, and an elastic ring is fixedly connected inside the other annular groove.

[0007] Furthermore, the sealing ring has a corrugated skeleton inside, and the outer walls of both the sealing ring and the elastic ring abut against one end of the plastic tube.

[0008] Furthermore, the positioning component includes a slider fixedly connected to the top side of the outer wall of the ring, a groove is provided on the top side of the outer wall of the ring, the slider is slidably connected inside the groove, and a limit block is connected to the top side of the slider by a torsion spring.

[0009] Furthermore, a limiting groove is formed on one side of the slide, the limiting block retainer is inside the limiting groove, and an arc plate is slidably connected inside the ring, with one end of the arc plate inserted into the inside of the ring.

[0010] Furthermore, the arc-shaped plate is located on one side of the slider, and an elastic protrusion is fixedly connected to one end of the arc-shaped plate.

[0011] Furthermore, the outer wall of the ring is provided with a composite component, the composite component including a bottom layer disposed on the outer wall of the ring, an intermediate layer disposed on the top side of the bottom layer, and a surface layer disposed on the top side of the intermediate layer.

[0012] Furthermore, the bottom layer is prepared using graphene-modified epoxy resin coating as raw material, the middle layer is prepared using nano-ceramic coating as raw material, and the top layer is prepared using polytetrafluoroethylene coating as raw material.

[0013] This utility model has the following beneficial effects: In this invention, by setting a sealing ring and an elastic ring, and setting a metal skeleton inside the sealing ring, the joint ensures a sealing effect from both material properties and structural design aspects, effectively preventing media leakage; while the bellows-type telescopic sealing sleeve addresses the sealing challenges brought about by pipeline displacement, ensuring the sealing performance of the joint under various working conditions.

[0014] In this invention, the ring is inserted into the inside of the plastic tube to connect the ring and the plastic tube together, allowing the connector to be quickly installed between the two plastic tubes. A torsion spring is used to lock the limiting block into the limiting groove, thereby fixing the position of the slider and the position of the ring. A sliding arc plate is inserted into the ring to block the slider, further preventing the slider from sliding. This allows the connector to be installed quickly, avoiding the inconvenience of installation and disassembly caused by the need for special tools for installation and disassembly due to bolts and other fasteners. Attached Figure Description

[0015] Figure 1 A perspective view of a quick-installation automotive plastic pipe connector proposed in this utility model; Figure 2 for Figure 1Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the annular structure of a quick-installation automotive plastic pipe connector proposed in this utility model. Figure 4 A schematic diagram of the insertion ring structure of a quick-installation automotive plastic pipe connector proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the insert ring and internal structure of the plastic tube in a quick-installation automotive plastic tube connector proposed in this utility model. Figure 7 A schematic diagram of the internal structure of the sealing ring of a quick-installation automotive plastic pipe connector proposed in this utility model. Figure 8 This is a schematic diagram of the annular outer wall structure of a quick-installation automotive plastic pipe connector proposed in this utility model.

[0016] Legend: 1. Metal ring; 2. Corrugated pipe; 3. Plastic pipe; 4. Circular ring; 5. Slider; 6. Limiting block; 7. Arc plate; 8. Insert ring; 9. Elastic protrusion; 10. Sealing ring; 11. Elastic ring; 12. Corrugated skeleton; 13. Bottom layer; 14. Middle layer; 15. Top layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a quick-installation automotive plastic pipe connector, comprising a metal ring 1, with circular rings 4 fixedly connected to both sides of the metal ring 1. A plastic pipe 3 is disposed at the end of each circular ring 4, and a plug ring 8 is slidably connected inside the circular ring 4. One end of the plug ring 8 is inserted into the interior of the plastic pipe 3. By inserting the plug ring 8 into the interior of the plastic pipe 3, the circular ring 4 and the plastic pipe 3 are connected together, allowing the connector to be quickly installed between the two plastic pipes 3. Corrugated pipes 2 are fixedly connected to both sides of the metal ring 1. The corrugated pipes 2 are made of stainless steel and have good flexibility and fatigue resistance. One end of the corrugated pipe 2 is fixedly connected to the metal ring 1, and the other end is designed as a free end, allowing free expansion and contraction along the axial direction of the plastic pipe 3. When the vehicle is in motion, if the plastic pipes expand and contract due to temperature changes, such as high temperatures in the engine compartment, or if the vehicle vibrates and causes displacement, the corrugated pipe 2 can automatically expand and contract to compensate for the displacement, ensuring that the connector and the pipe always maintain a tight connection and preventing media leakage due to gaps caused by displacement. Furthermore, the metal material of bellows 2 provides a certain degree of mechanical protection for the joint, enhancing its impact and wear resistance. (See reference...) Figure 6 and Figure 7 The insert ring 8 has two annular grooves at one end. A sealing ring 10 is fixedly connected inside one of the grooves, and an elastic ring 11 is fixedly connected inside the other groove. A corrugated skeleton 12 is provided inside the sealing ring 10. The outer walls of both the sealing ring 10 and the elastic ring 11 abut against one end of the plastic tube 3. By inserting the insert ring 8 into the plastic tube 3, the sealing ring 10 and the elastic ring 11 abut against the plastic tube 3, thereby improving the sealing performance between the plastic tube 3 and the annular ring 4. The sealing ring 10 is made of fluororubber, which has excellent oil resistance, high temperature resistance, and chemical stability, effectively preventing leakage of media such as fuel and coolant. It is suitable for high-temperature, oily environments such as automotive engine compartments. The elastic ring 11 is made of TPE material. The material combines the elasticity of rubber with the processing properties of plastics, exhibiting good flexibility and strong resistance to vibration and deformation. It absorbs vibration energy during vehicle operation, preventing displacement or deformation of the sealing ring 10 due to vibration, thus further enhancing the sealing effect. Simultaneously, a corrugated skeleton 12, made of stainless steel, is embedded inside the sealing ring 10. The stainless steel corrugated skeleton 12 is annular, and its corrugated structure possesses excellent elasticity and deformation capacity. When the fluororubber sealing ring 10 ages or deforms due to long-term use or high-temperature environments, the stainless steel corrugated skeleton 12 can compensate using its own elasticity, continuously providing outward support to the sealing ring 10, maintaining the pressure on the sealing surface, and preventing sealing failure due to loss of elasticity caused by aging of the sealing ring 10. Furthermore, the strong corrosion resistance of stainless steel allows for long-term stable operation in various media environments, extending the service life of the joint.

[0019] Reference Figure 1 , Figure 2 and Figure 5 A slider 5 is fixedly connected to the top side of the outer wall of the insert ring 8. A groove is provided on the top side of the outer wall of the circular ring 4. The slider 5 is slidably connected inside the groove. A limit block 6 is connected to the top side of the slider 5 through a torsion spring. A limit groove is provided on one side of the groove. The limit block 6 is locked inside the limit groove. An arc plate 7 is slidably connected inside the circular ring 4. One end of the arc plate 7 is inserted into the inside of the circular ring 4. The arc plate 7 is located on one side of the slider 5. An elastic protrusion 9 is fixedly connected to one end of the arc plate 7. The limit block 6 is locked by the torsion spring. The slider 5 is fixed in the limiting groove, which in turn fixes the position of the insertion ring 8. The sliding arc plate 7 is inserted into the ring 4 to block the slider 5 and further prevent the slider 5 from sliding. The elastic protrusion 9 on the arc plate 7 is made of elastic metal such as spring steel or beryllium bronze, which has a high elastic limit and fatigue strength. The protrusion structure can be formed on the outer wall of the arc plate 7 through stamping, cutting and other processes. When inserted, the protrusion is deformed by pressure and generates a rebound force to resist the inside of the ring 4.

[0020] Reference Figure 8 The outer wall of the ring 4 is provided with a bottom layer 13, the top side of the bottom layer 13 is provided with an intermediate layer 14, and the top side of the intermediate layer 14 is provided with a surface layer 15. The bottom layer 13 is prepared from graphene-modified epoxy resin coating, the intermediate layer 14 is prepared from nano-ceramic coating, and the surface layer 15 is prepared from polytetrafluoroethylene coating. This composite coating consists of three layers. The bottom layer 13 is graphene-modified epoxy resin, which can enhance adhesion and prevent electrochemical corrosion. It is cured after spraying or dipping. The intermediate layer 14 is nano-ceramic, which can improve wear resistance, impact resistance, and high temperature resistance. It is treated with high temperature annealing after thermal spraying. The surface layer 15 is polytetrafluoroethylene, which can reduce friction and resist corrosion. It is sintered at high temperature after spraying or scraping. The three coatings improve the joint performance in terms of adhesion, wear resistance, and friction. The process includes pretreatment, coating, and post-treatment steps to ensure the coating effect.

[0021] Working principle: First, place the connector between the two plastic tubes 3. Then, slide the slider 5 to insert the insertion ring 8 into the plastic tube 3, so that the sealing ring 10 and the elastic ring 11 abut against the plastic tube 3 to improve the sealing between the plastic tube 3 and the ring 4. Then, the torsion spring causes the limiting block 6 to lock into the limiting groove, thereby fixing the position of the slider 5 and the insertion ring 8. The sliding arc plate 7 is inserted into the ring 4 to block the slider 5, thereby further preventing the slider 5 from sliding. Thus, the connector is installed between the two plastic tubes 3. When disassembly is required, simply reverse the above process. This will not be described in detail here.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-installation automotive plastic pipe fitting, characterized in that: The device includes a metal ring (1), with a circular ring (4) fixedly connected to both the left and right sides of the metal ring (1). A plastic tube (3) is provided at the end of the circular ring (4). An insert ring (8) is slidably connected inside the circular ring (4). One end of the insert ring (8) is inserted into the inside of the plastic tube (3). A sealing component is provided at one end of the insert ring (8) to improve the sealing between the plastic tube (3) and the circular ring (4). A positioning component is provided on the top side of the outer wall of the insert ring (8) to fix the position of the insert ring (8). A corrugated pipe (2) is fixedly connected to both the left and right sides of the metal ring (1).

2. The quick-installation automotive plastic pipe connector according to claim 1, characterized in that: The sealing assembly includes two annular grooves formed at one end of the insert ring (8), one of the annular grooves having a sealing ring (10) fixedly connected inside, and the other annular groove having an elastic ring (11) fixedly connected inside.

3. The quick-installation automotive plastic pipe connector according to claim 2, characterized in that: The sealing ring (10) has a corrugated skeleton (12) inside, and the outer walls of the sealing ring (10) and the elastic ring (11) abut against one end of the plastic tube (3).

4. The quick-installation automotive plastic pipe connector according to claim 1, characterized in that: The positioning component includes a slider (5) fixedly connected to the top side of the outer wall of the insert ring (8). A groove is provided on the top side of the outer wall of the ring (4). The slider (5) is slidably connected inside the groove. The top side of the slider (5) is connected to a limit block (6) by a torsion spring.

5. The quick-installation automotive plastic pipe connector according to claim 4, characterized in that: A limiting groove is provided on one side of the slide, and the limiting block (6) is circumferentially inserted inside the limiting groove. An arc plate (7) is slidably connected inside the ring (4), and one end of the arc plate (7) is inserted inside the ring (4).

6. The quick-installation automotive plastic pipe connector according to claim 5, characterized in that: The arc plate (7) is located on one side of the slider (5), and an elastic protrusion (9) is fixedly connected to one end of the arc plate (7).

7. The quick-installation automotive plastic pipe connector according to claim 1, characterized in that: The outer wall of the ring (4) is provided with a composite component, the composite component including a bottom layer (13) provided on the outer wall of the ring (4), an intermediate layer (14) provided on the top side of the bottom layer (13), and a surface layer (15) provided on the top side of the intermediate layer (14).

8. A quick-installation automotive plastic pipe connector according to claim 7, characterized in that: The bottom layer (13) is prepared by using graphene-modified epoxy resin coating as raw material, the middle layer (14) is prepared by using nano-ceramic coating as raw material, and the top layer (15) is prepared by using polytetrafluoroethylene coating as raw material.

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