A type of automotive oil pipe with a high pressure resistance structure

By combining the inner support tube and the outer corrugated tube, along with support bars, return springs, anti-compression rings, and reinforcing ribs, the problem of poor support effect of corrugated oil pipes under sudden compression is solved, achieving a high pressure resistance effect.

CN224283780UActive Publication Date: 2026-05-26QINGDAO JINYUAN AUTOMOTIVE TUBING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO JINYUAN AUTOMOTIVE TUBING CO LTD
Filing Date
2025-07-01
Publication Date
2026-05-26

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  • Figure CN224283780U_ABST
    Figure CN224283780U_ABST
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Abstract

This utility model discloses an automotive oil pipe with a high pressure resistance structure, relating to the field of automotive oil pipe technology. It includes a support pipe and an outer corrugated pipe. The outer corrugated pipe is adhered to the outside of the inner support pipe, and the outer corrugated pipe has an internal fitting groove. An integrally formed support strip is provided on the outside of the inner support pipe. This automotive oil pipe with a high pressure resistance structure uses cross-arranged support strips and a return spring to fill the space between the inner support pipe and the outer corrugated pipe, providing good support and high resilience, thus achieving the purpose of high pressure resistance for the automotive oil pipe. Furthermore, the outer corrugated pipe is provided with an anti-compression ring, reinforcing ribs, and connecting rings for deformation resistance, further enhancing the pressure resistance of the automotive oil pipe. This high pressure resistance structure solves the problem that existing automotive corrugated oil pipes generally rely on the corrugated structure of the pipe itself for overall structural support, resulting in poor support.
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Description

Technical Field

[0001] This utility model relates to the field of automotive oil pipe technology, specifically an automotive oil pipe with a high pressure resistance structure. Background Technology

[0002] Automotive fuel lines are the core transmission components of the fuel system. They connect the fuel tank, fuel pump, and engine injectors through pressure-resistant pipes to achieve directional fuel delivery and pressure control. When the fuel pump introduces fuel from the fuel tank into the engine through fuel lines, corrugated fuel lines are generally used for delivery. The corrugated structure of the fuel line ensures that the pipe material has good bending strength.

[0003] Existing automotive corrugated oil pipes typically rely on their built-in corrugated structure for overall structural support during use. While the corrugated structure provides basic pressure resistance to minor compression, it is insufficient for sudden compression events such as collisions. Utility Model Content

[0004] The purpose of this utility model is to provide an automotive oil pipe with a high pressure resistance structure, so as to solve the problem mentioned in the background art that the existing automotive corrugated oil pipes generally rely on the corrugated structure of the pipe itself for overall structural support, resulting in poor support effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automotive oil pipe with a high pressure resistance structure, comprising an inner support pipe and an outer corrugated pipe.

[0006] An outer corrugated pipe is adhered to the outside of the inner support tube. An interlocking groove is opened inside the outer corrugated pipe. An integrally formed support strip is provided on the outside of the inner support tube. A reset spring is inserted into the gap between the support strips. An anti-compression ring and a reinforcing rib are connected to the outside of the outer corrugated pipe. The outside of the reinforcing rib is connected to the inner wall of the anti-compression ring through a connecting ring.

[0007] Preferably, the support bar is spirally arranged, and the support bar and the reset spring are arranged in a cross shape between the inner support tube and the outer corrugated tube.

[0008] Preferably, the outer side of the support bar and the return spring are both fitted into the fitting groove opened inside the outer bellows, and the support bar is made of a highly elastic and highly compressive rubber material.

[0009] Preferably, the anti-compression ring is arc-shaped, and the connecting ring is annular inside the anti-compression ring.

[0010] Preferably, the reinforcing rib is disposed in a groove on the outer side of the outer corrugated pipe, and the reinforcing rib is arranged in a circular shape.

[0011] Preferably, the anti-compression ring is made of a highly resilient rubber material, and the connecting ring is made of a highly ductile and highly resilient rubber material.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The automotive oil pipe with a high pressure resistance structure uses cross-arranged support bars and return springs to fill the space between the inner support pipe and the outer corrugated pipe, which provides good support and high resilience, thereby achieving the purpose of high pressure resistance of the automotive oil pipe. In addition, the outer corrugated pipe is provided with an anti-compression ring, reinforcing ribs and connecting rings for anti-deformation, which further enhances the pressure resistance of the automotive oil pipe. This solves the problem that the existing automotive corrugated oil pipes generally rely on the corrugated structure of the pipe itself for overall structural support, resulting in poor support effect.

[0013] 1. This automotive oil pipe with a high pressure resistance structure enhances the pressure resistance of the oil pipe during use. The return spring strengthens the return effect of the outer bellows, and the two are connected in an interlocking manner for a tighter fit. At the same time, the spiral support bars that intersect with the return spring limit the deformation range of the return spring and assist in its return. Furthermore, the support bars further strengthen the elastic support of the outer bellows. This automotive oil pipe with a high pressure resistance structure uses interlocking support bars and a return spring to fill the space between the inner support tube and the outer bellows, providing good support and high resilience, thereby achieving the goal of high pressure resistance for the automotive oil pipe.

[0014] 2. This automotive oil pipe with a high pressure resistance structure further enhances its compression resistance. When the outer corrugated pipe is compressed, the anti-compression ring deforms first, strengthening the support at the groove of the outer corrugated pipe. The reinforcing rib prevents excessive compression at the groove of the outer corrugated pipe, further strengthening the support effect at the groove. At the same time, the anti-compression ring is connected to the reinforcing rib by a connecting ring, which can prevent the anti-compression ring from being excessively stretched. This automotive oil pipe with a high pressure resistance structure has an anti-compression ring, reinforcing rib, and connecting ring on the outside of the outer corrugated pipe for deformation resistance, further enhancing the pressure resistance of the automotive oil pipe. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the automotive oil pipe of this utility model;

[0016] Figure 2 This is a schematic diagram of the explosion structure of the automotive oil pipe of this utility model;

[0017] Figure 3 This is a schematic diagram of the main cross-sectional structure of the external corrugated pipe of this utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the external corrugated pipe of this utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the reinforcing rib of this utility model;

[0020] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the reinforcing rib of this utility model.

[0021] In the diagram: 1. Inner support tube; 2. Outer corrugated tube; 3. Support bar; 301. Return spring; 302. Fitting groove; 4. Anti-compression ring; 401. Reinforcing rib; 402. Connecting ring. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-4 This utility model provides a technical solution: an automotive oil pipe with a high pressure resistance structure, comprising an inner support pipe 1 and an outer corrugated pipe 2.

[0024] An outer corrugated pipe 2 is adhered to the outside of the inner support tube 1. An interlocking groove 302 is provided inside the outer corrugated pipe 2. An integrally formed support strip 3 is provided on the outside of the inner support tube 1. A return spring 301 is inserted into the gap between the support strips 3. The support strip 3 is spirally arranged, and the support strip 3 and the return spring 301 are arranged in a cross shape between the inner support tube 1 and the outer corrugated pipe 2. The outer sides of the support strip 3 and the return spring 301 are both interlocked with the interlocking groove 302 provided inside the outer corrugated pipe 2. The support strip 3 is made of high elasticity and high pressure resistance rubber material.

[0025] In specific implementation, to improve the pressure resistance of automotive oil pipes during use, a return spring 301 is installed between the inner support pipe 1 and the outer corrugated pipe 2 to enhance the reset effect of the outer corrugated pipe 2. The return spring 301 is connected to the outer corrugated pipe 2 by fitting with the fitting groove 302, which enhances the tightness of the connection between the outer corrugated pipe 2 and the return spring 301. At the same time, a spiral support bar 3 that intersects with the return spring 301 is installed on the outside of the inner support pipe 1, which can limit the deformation range of the return spring 301 and has the effect of assisting the return spring 301 in reset. Furthermore, the fitting of the support bar 3 with the fitting groove 302 can further strengthen the elastic support of the outer corrugated pipe 2. This automotive oil pipe with a high pressure resistance structure uses the intersecting support bar 3 and the return spring 301 to fill the space between the inner support pipe 1 and the outer corrugated pipe 2, which has a good support effect and a high rebound effect, thereby achieving the purpose of high pressure resistance of automotive oil pipes.

[0026] See Figures 2-6 It can be seen that the outer corrugated pipe 2 is connected to an anti-compression ring 4 and a reinforcing rib 401. The outer side of the reinforcing rib 401 is connected to the inner wall of the anti-compression ring 4 through a connecting ring 402. The anti-compression ring 4 is arc-shaped. The connecting ring 402 is annular inside the anti-compression ring 4. The reinforcing rib 401 is set in a groove on the outer side of the outer corrugated pipe 2 and is annular. The anti-compression ring 4 is made of highly resilient rubber material, and the connecting ring 402 is made of highly ductile and highly resilient rubber material.

[0027] In specific implementation, to further enhance the compression resistance of the automotive oil pipe, an anti-compression ring 4, a reinforcing rib 401, and a connecting ring 402 are provided at the groove on the outer side of the outer corrugated pipe 2. When the outer corrugated pipe 2 is compressed, the anti-compression ring 4 will deform first to strengthen the support at the groove of the outer corrugated pipe 2, while the reinforcing rib 401 can prevent excessive compression at the groove of the outer corrugated pipe 2, further enhancing the support effect at the groove of the outer corrugated pipe 2. At the same time, the anti-compression ring 4 is connected to the reinforcing rib 401 by the connecting ring 402, which can prevent the anti-compression ring 4 from being excessively stretched. This automotive oil pipe with a high pressure resistance structure has an anti-compression ring 4, a reinforcing rib 401, and a connecting ring 402 on the outer side of the outer corrugated pipe 2 to further enhance the pressure resistance of the automotive oil pipe.

[0028] In summary, when using this automotive oil pipe with a high pressure resistance structure, the cross-arranged support bars 3 and return springs 301 fill the space between the inner support pipe 1 and the outer bellows 2, which can enhance the return effect of the outer bellows 2 and strengthen the elastic support of the outer bellows 2. The outer bellows 2 is provided with an anti-compression ring 4, a reinforcing rib 401 and a connecting ring 402 for anti-deformation, which can avoid the problem of excessive compression at the groove of the outer bellows 2. The contents not described in detail in this specification are prior art known to those skilled in the art.

[0029] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. An automotive oil pipe with a high pressure resistance structure, comprising an inner support pipe (1) and an outer corrugated pipe (2), characterized in that: The inner support tube (1) is bonded to the outer side with an outer corrugated tube (2). The outer corrugated tube (2) has an interlocking groove (302) inside. The inner support tube (1) is provided with an integrally formed support strip (3). A reset spring (301) is inserted into the gap between the support strips (3). The outer corrugated tube (2) is connected to an anti-compression ring (4) and a reinforcing rib (401). The outer side of the reinforcing rib (401) is connected to the inner wall of the anti-compression ring (4) through a connecting ring (402).

2. The automotive oil pipe with a high pressure resistance structure according to claim 1, characterized in that: The support bar (3) is spirally arranged, and the support bar (3) and the reset spring (301) are arranged in a cross shape between the inner support tube (1) and the outer corrugated tube (2).

3. The automotive oil pipe with a high pressure resistance structure according to claim 2, characterized in that: The outer side of the support bar (3) and the return spring (301) are both fitted into the fitting groove (302) inside the outer corrugated pipe (2). The support bar (3) is made of high elasticity and high pressure resistance rubber material.

4. The automotive oil pipe with a high pressure resistance structure according to claim 1, characterized in that: The anti-compression ring (4) is arc-shaped, and the connecting ring (402) is annular inside the anti-compression ring (4).

5. The automotive oil pipe with a high pressure resistance structure according to claim 1, characterized in that: The reinforcing rib (401) is disposed in the groove on the outside of the outer corrugated pipe (2), and the reinforcing rib (401) is arranged in a circular shape.

6. The automotive oil pipe with a high pressure resistance structure according to claim 4, characterized in that: The anti-compression ring (4) is made of a highly resilient rubber material, and the connecting ring (402) is made of a highly elongated and highly resilient rubber material.