Connecting structure of engine short-distance damping pipeline

Abstract

The utility model relates to the technical field of engine fuel oil pipelines, and discloses a connecting structure of an engine short-distance damping pipeline, which comprises a shaping pipeline, an oil passing bolt and an oil port straight joint, a hinge joint and a pipeline joint core are respectively arranged at two ends of the shaping pipeline, the oil passing bolt is arranged in the hinge joint and is connected with an engine oil port, and the oil port straight joint is connected with the oil port straight joint. One end of the oil port straight joint is connected with the pipeline joint core, and the other end of the oil port straight joint is connected to another oil port of the engine. The utility model can be matched with the whole machine, has various shapes, is more suitable for short-distance connection, improves the pressure resistance of the pipeline through the double connection modes of cold insertion and buckling, and can greatly enlarge the adjustable range of the pipeline of the whole system and relieve the vibration impact when the oil temperature is increased in the operation process of the engine and the pipeline generates creep deformation. And the error-tolerant rate of the accumulated assembly tolerance is improved.

Description

Technical Field

[0001] This utility model relates to the field of engine fuel line technology, specifically to a connection structure for a short-distance engine damping line. Background Technology

[0002] Currently, a common arrangement in engine low-pressure fuel lines is a single-channel return line, where the fuel ports are connected by steel pipes or hoses. Due to limited engine space, steel pipe connections are difficult to adjust, resulting in high assembly difficulty and poor vibration resistance. Hose connections, on the other hand, are difficult to maintain uniformity during assembly, making it difficult to pass visual inspection. These issues have become bottlenecks in short-distance connection structures.

[0003] Steel pipes often suffer from problems during installation, such as inability to adjust or tolerate errors, poor shock resistance, and a high failure rate. Flexible hoses, on the other hand, have poor appearance uniformity, require specific lengths, are difficult to control over short distances or angled connections, and result in a poor and inconsistent appearance after installation. Utility Model Content

[0004] The technical problem to be solved by this invention is how to achieve the adjustment adaptability of short-distance single-path connection of engine.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is to provide a connection structure for a short-distance damping pipeline of an engine, including a fixed pipeline, an oil passage bolt and an oil port straight connector. The fixed pipeline is provided with a hinged joint and a pipeline connector core at both ends. The oil passage bolt is located in the hinged joint and is connected to the engine oil port. One end of the oil port straight connector is connected to the pipeline connector core, and the other end is connected to another oil port of the engine.

[0006] Optionally, the shaped pipeline is a double-layer pipeline, with the inner layer being made of polytetrafluoroethylene and the outer layer being made of PA12 nylon tubing, and the two are bonded together with an adhesive.

[0007] Optionally, the end of the hinged joint that connects to the shaped pipe has a serrated structure on its exterior and is cold-plugged into the shaped pipe.

[0008] Optionally, the pipe connector core is a straight pipe, and the end of it that connects to the fixed pipe has a serrated structure on the outside, and is inserted into the fixed pipe through the serrated mechanism.

[0009] Optionally, a clamping ring is provided at the connection between the pipe joint core and the shaped pipe, and at the connection between the hinge joint and the shaped pipe.

[0010] Optionally, the end of the pipeline connector core connected to the oil port straight connector is provided with an outer retaining nut, the oil port straight connector is provided with an external thread, and the oil port straight connector is threadedly connected to the pipeline connector core through the outer retaining nut.

[0011] Optionally, a sealing ring is provided at the end of the pipeline connector core that connects to the oil port straight connector.

[0012] Optionally, washers are provided between the oil-passing bolt and the hinge joint, between the oil-passing bolt and the oil port, and between the oil port straight connector and the oil port.

[0013] In summary, this utility model can be matched with the whole machine, has a variety of shapes, and is more suitable for short-distance connections. It improves the pressure resistance of the pipeline through the dual connection method of cold plugging and crimping. Moreover, during engine operation, the oil temperature increases and the pipeline will creep. This creep can greatly enhance the adjustability range of the entire system pipeline, reduce vibration and shock, and improve the tolerance rate of cumulative assembly tolerance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the standardized pipeline assembly structure in this utility model;

[0016] In the diagram: 1. Fixed pipeline; 1.2. Hinged joint; 1.3. Pipeline connector core; 1.4. Outer retaining nut; 1.5. Crimping ring; 2. Oil passage bolt; 3. Oil port straight connector; 4. Washer. Detailed Implementation

[0017] The following combination Figure 1-2 The present invention will be described in further detail below.

[0018] This utility model discloses a connection structure for a short-distance vibration damping pipeline in an engine, referring to... Figure 1 The system includes a shaping pipe 1, an oil passage bolt 2, and an oil port straight connector 3. The shaping pipe 1 has a hinged joint 1.2 and a pipe connector core 1.3 at both ends. The oil passage bolt 2 is located in the hinged joint 1.2 and is connected to the engine oil port. One end of the oil port straight connector 3 is connected to the pipe connector core 1.3, and the other end is connected to another oil port of the engine. Specifically, the shaping pipe 1 is a double-layer pipe, with the inner layer being made of polytetrafluoroethylene and the outer layer being made of PA12 nylon tubing. The two are bonded together with an adhesive. The pipe can be shaped in a mold by high-temperature baking, and finally the pipe is shaped into various shapes as required.

[0019] In a further implementation, refer to Figure 2The hinged joint 1.2 has a serrated structure on the outside of its end connected to the shaped pipe 1, and is cold-plugged into the shaped pipe 1. The pipe joint core 1.3 is a straight pipe, and its end connected to the shaped pipe 1 also has a serrated structure on the outside, and is plugged into the shaped pipe 1 through the serrated mechanism. A crimping ring 1.5 is provided at the connection points between the pipe joint core 1.3 and the shaped pipe 1, and at the connection points between the hinged joint 1.2 and the shaped pipe 1, to improve the rigidity of the shaped pipe assembly. The pipe joint core 1.3 is connected to the oil port straight connector 3. One end of the connector is provided with a retaining nut 1.4. One end of the oil port straight connector 3 that connects to the pipe connector core 1.3 is provided with an external thread. The oil port straight connector 3 is threadedly connected to the pipe connector core 1.3 through the retaining nut 1.4. The other end of the oil port straight connector 3 is provided with a straight thread for connecting to the oil port. A sealing ring is provided at the end of the pipe connector core 1.3 that connects to the oil port straight connector 3. Washers 4 are provided between the oil-passing bolt 2 and the hinge joint 1.2, between the oil-passing bolt 2 and the oil port, and between the oil port straight connector 3 and the oil port.

[0020] This utility model designs a shaped pipeline assembly, which facilitates the connection and adjustment between oil ports. The shaped pipeline adopts a double-layer nylon tube. This material creeps as the temperature rises, which alleviates pipeline vibration. Furthermore, the dual connection method of cold insertion and crimping improves the pressure resistance of the pipeline. This utility model has a variety of shapes and an aesthetically pleasing appearance, making it more suitable for the overall shape of the machine. It greatly enhances the adjustability range of the entire system pipeline and improves the tolerance rate of cumulative assembly tolerances.

[0021] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A connection structure for a short-distance vibration damping pipeline in an engine, characterized in that, The application relates to a type pipe (1), an oil passing bolt (2) and an oil port straight-through joint (3), wherein the type pipe (1) is provided with a hinged joint (1.2) and a pipe joint core (1.3) at two ends respectively, the oil passing bolt (2) is arranged in the hinged joint (1.2) and connected with an engine oil port, and the oil port straight-through joint (3) is connected with the pipe joint core (1.3) at one end and connected with another oil port of the engine at the other end.

2. The engine short-length damper pipe connecting structure according to claim 1, characterized by The type pipe (1) is a double-layer pipe, the inner layer is made of polytetrafluoroethylene material, the outer layer is a PA12 nylon pipe, and the two layers are adhered through an adhesive.

3. The engine short-length damper pipe connecting structure according to claim 1, characterized by The outer part of one end of the hinged joint (1.2) connected with the type pipe (1) is provided with a sawtooth structure and is cold-inserted connected with the type pipe (1).

4. The connecting structure of the engine short-range damper line according to claim 3, characterized by The pipe joint core (1.3) is a straight-through pipe, the outer part of one end of the pipe joint core (1.3) connected with the type pipe (1) is provided with a sawtooth structure and is inserted with the type pipe (1) through the sawtooth structure.

5. The connecting structure of the engine short-range damper line according to claim 4, characterized by The outer part of the connection between the pipe joint core (1.3) and the type pipe (1) and the connection between the hinged joint (1.2) and the type pipe (1) is provided with a buckling ring (1.5).

6. The connecting structure of the engine short-range damper line according to claim 4, characterized by The pipe joint core (1.3) is provided with an outer sleeve fixing nut (1.4) at one end connected with the oil port straight-through joint (3), the oil port straight-through joint (3) is provided with an outer thread, and the oil port straight-through joint (3) is screw-connected with the pipe joint core (1.3) through the outer sleeve fixing nut (1.4).

7. The connecting structure of the engine short-range damper line according to claim 6, characterized by The pipe joint core (1.3) is provided with a sealing ring at one end connected with the oil port straight-through joint (3).

8. The engine short-length damper pipe connecting structure according to claim 1, characterized by The oil passing bolt (2) is provided with a gasket (4) between the oil passing bolt (2) and the hinged joint (1.2), between the oil passing bolt (2) and the oil port and between the oil port straight-through joint (3) and the oil port.

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