Pipeline assembly structure

By incorporating a flared end, a plastic tube, and a rotating knob, the design solves the problems of insertion and fixation during refueling hose assembly, achieving a low-cost, easy-to-fix pipe assembly structure suitable for automotive fuel tank systems.

CN223992044UActive Publication Date: 2026-03-13PARKOHIO IND (QINGDAO) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-14
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

Traditional fuel hoses are difficult to insert during assembly, have the risk of leakage and detachment, and increase manufacturing costs and the risk of glue pollution.

Method used

The structure features a flared opening, a plastic tube, and a rotating knob. By incorporating through holes and an oil reservoir, insertion becomes easier and the device is more secure. It is then bonded using an adhesive.

Benefits of technology

It reduces the difficulty of pipe insertion, improves the fixing effect, reduces labor costs without affecting the production cycle, and avoids the addition of extra processes.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223992044U_ABST
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Abstract

The pipeline assembling structure comprises a hose body, a plastic pipe and a rotary knob, a flaring is arranged at the top end of the hose body, through holes are formed in the flaring, an oil storage groove is formed in the inner side of the flaring, the plastic pipe adheres to the outer portion of the flaring, an elastic piece is arranged at the top end of the plastic pipe, and the rotary knob is arranged at the top end of the plastic pipe. And the rotary knob is in threaded connection with the outer part of the plastic pipe. Through the arrangement of the flaring, the plastic pipe and the rotary button, additional processes do not need to be added, the labor cost is low, the production takt of products cannot be affected, the pipeline insertion difficulty can be greatly reduced in the pipeline assembly aspect, the pipeline is easy to fix, and meanwhile adhesive can be injected through the arrangement of the through hole and the oil storage tank so that bonding can be facilitated.
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Description

Technical Field

[0001] This utility model relates to the field of refueling pipe technology, and in particular to a pipe assembly structure. Background Technology

[0002] As part of the automotive fuel tank system, the ease of insertion during assembly is a significant challenge. A larger inner diameter design reduces the insertion force during assembly, but also introduces risks of leakage and detachment. Traditional fuel hoses are designed with a chamfer at the assembly end to reduce insertion force through a ramp. However, this chamfer increases manufacturing costs, poses a risk of adhesive contamination, and makes the hose difficult to use and secure. Therefore, we propose a new hose assembly structure. Summary of the Invention

[0003] To address the shortcomings of the existing technology, a pipe assembly structure is provided. By setting up a flared end, a plastic tube, and a rotary knob, no additional processes are required, resulting in low labor costs and no impact on the production cycle. Furthermore, the pipe assembly structure greatly reduces the difficulty of pipe insertion and facilitates fixation. Additionally, the through-hole and oil reservoir allow for the injection of adhesive for bonding.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is a pipeline assembly structure, comprising:

[0005] The hose body has a flared end with a through hole and an oil reservoir inside.

[0006] A plastic tube is bonded to the outside of the flared opening, and a spring is provided at the top end of the plastic tube;

[0007] A rotary knob is threaded onto the outside of the plastic tube.

[0008] In the aforementioned pipeline assembly structure, the flared end is trumpet-shaped.

[0009] In the above-mentioned pipeline assembly structure, several through holes are equally spaced, and all of the through holes are circular holes.

[0010] In the aforementioned pipe assembly structure, the outer side of the plastic pipe is provided with external threads for installing a rotary knob.

[0011] In the aforementioned pipeline assembly structure, several of the aforementioned spring pieces are distributed circumferentially.

[0012] In the aforementioned pipeline assembly structure, the inner side of the rotary knob is provided with threaded grooves for connecting plastic pipes, and the outer side of the rotary knob is provided with anti-slip textures.

[0013] In the aforementioned pipeline assembly structure, a tapered tube is provided at the top of the rotary knob.

[0014] The advantages of this utility model's pipeline assembly structure are that by setting a flared end, a plastic tube, and a rotating knob, no additional processes are required, resulting in low labor costs and no impact on the production cycle. Furthermore, it significantly reduces the difficulty of pipe insertion and facilitates fixation. Simultaneously, the through-hole and oil reservoir allow for the injection of adhesive for bonding. In use, the user only needs to design and optimize the vulcanizing mandrel, adding a flared end to the assembly. No additional processes are required, resulting in low labor costs and no impact on the production cycle. The flared end can then be inserted into the refueling pipe, and the rotating knob can be rotated downwards. The rotating knob will converge the spring, causing it to press against the refueling pipe for fixation. Simultaneously, adhesive can be injected into the oil reservoir through the through-hole, where it solidifies for fixation, thus improving the fixing effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is an exploded view of a pipeline assembly structure according to the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of a pipeline assembly structure according to the present invention;

[0018] Figure 3 This utility model relates to a pipeline assembly structure. Figure 1 A three-dimensional structural diagram of a plastic tube;

[0019] Figure 4 This utility model relates to a pipeline assembly structure. Figure 1 A 3D structural diagram of the central rotary knob.

[0020] In the picture:

[0021] 100. Hose body; 101. Flared end; 102. Through hole; 103. Oil reservoir;

[0022] 200. Plastic pipe; 201. External thread; 202. Spring clip;

[0023] 300. Rotary knob; 301. Threaded groove; 302. Anti-slip texture. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not at half scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] This utility model provides a pipeline assembly structure. By setting up a flared end, a plastic tube, and a rotary knob, no additional processes are required, resulting in low labor costs and no impact on the production cycle. Furthermore, it greatly reduces the difficulty of inserting the pipeline and makes it easy to fix. Additionally, by setting up through holes and oil reservoirs, adhesive can be injected for bonding.

[0030] Figure 1-4 The diagram shown is an overall structural schematic of one embodiment of a pipeline assembly structure according to this utility model. Please refer to [link / reference]. Figure 1-4 The main body of a pipeline assembly structure according to this embodiment includes: a hose body 100, a plastic tube 200, and a rotary knob 300.

[0031] The hose body 100 is used to transport gasoline. Specifically, the top of the hose body 100 is provided with a flared end 101, and through holes 102 are provided on the flared end 101. Several through holes 102 are evenly distributed and are all round holes. An oil reservoir 103 is provided on the inner side of the flared end 101. The flared end 101 is funnel-shaped. In use, the user only needs to design and optimize the vulcanizing mandrel and add the flared end 101 at the assembly end. No additional process is required, the labor cost is low, and it will not affect the production cycle of the product. In terms of pipeline assembly, it can also greatly reduce the difficulty of pipeline insertion. Adhesive can be injected into the oil reservoir 103 through the through holes 102. After injection, the adhesive can solidify in the oil reservoir 103 to fix it, thereby improving the fixing effect.

[0032] The plastic tube 200 can be used in conjunction with the rotary knob 300 to fix the hose body 100 onto the refueling pipe. Specifically, the plastic tube 200 is bonded to the outside of the flared end 101. The top end of the plastic tube 200 is provided with spring tabs 202, and several spring tabs 202 are distributed circumferentially. The outer side of the plastic tube 200 is provided with external threads 201 for installing the rotary knob 300. In use, the plastic tube 200 can be bonded to the outside of the flared end 101, and the several spring tabs 202 have a certain elasticity to press against the refueling pipe. The external threads 201 allow the plastic tube 200 to be connected to the rotary knob 300 for use.

[0033] To facilitate the fixing of the hose body 100, a rotary knob 300 is provided. Specifically, the rotary knob 300 is threaded to the outside of the plastic tube 200. The inner side of the rotary knob 300 is provided with a threaded groove 301 for connecting the plastic tube 200, and the outer side of the rotary knob 300 is provided with anti-slip texture 302. The top of the rotary knob 300 is provided with a tapered tube. In use, the flared end 101 can be inserted into the refueling pipe, and then the rotary knob 300 is rotated downwards. The rotating rotary knob 300 will bring together the spring piece 202, so that the spring piece 202 squeezes the refueling pipe for fixing. The anti-slip texture 302 provides an anti-slip effect to facilitate the rotation of the rotary knob 300. The threaded groove 301 facilitates the connection between the rotary knob 300 and the plastic tube 200.

[0034] Combination Figures 1-4In this embodiment of the pipeline assembly structure, the user only needs to design and optimize the vulcanizing mandrel and add a flared end 101 to the assembly end. No additional processes are required, resulting in low labor costs and no impact on the production cycle. In terms of pipeline assembly, it also greatly reduces the difficulty of pipeline insertion. The flared end 101 can then be inserted into the refueling pipeline. After that, the rotary knob 300 is rotated downwards. The rotating knob 300 will bring together the spring piece 202, causing the spring piece 202 to squeeze the refueling pipeline for fixation. At the same time, adhesive can be injected into the oil storage tank 103 through the through hole 102. After injection, the adhesive can solidify in the oil storage tank 103 to fix the pipeline and improve the fixing effect.

[0035] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pipe fitting structure characterized by comprising: The utility model relates to a kind of oiling device, including: Hose body, the top end of which is provided with a flared end, a through hole is arranged on the flared end, and an oil storage groove is arranged on the inner side of the flared end; A plastic tube is bonded to the outside of the flared end, and the top end of the plastic tube is provided with a plurality of elastic pieces; A rotating knob is threadedly connected to the outside of the plastic tube.

2. A pipe fitting structure according to claim 1, wherein The flared end is trumpet-shaped.

3. A pipe fitting structure according to claim 2, wherein The plurality of through holes are equidistantly distributed, and each of the plurality of through holes is a circular hole.

4. A pipe fitting structure according to claim 3, wherein The outside of the plastic tube is provided with an external thread for mounting the rotating knob.

5. A pipe fitting structure according to claim 4, wherein The plurality of elastic pieces are circumferentially distributed.

6. A pipe fitting structure according to claim 5, wherein The inner side of the rotating knob is provided with a threaded groove for connecting the plastic tube, and the outer side of the rotating knob is provided with a non-slip pattern.

7. A pipe fitting structure according to claim 6, wherein The top end of the rotating knob is provided with a tapered tube.