High-strength stainless steel oil pipe for automobile engine

Abstract

The utility model discloses a high-strength automobile engine stainless steel oil pipe which comprises a pipe body, bendable portions are distributed on one port face of the pipe body in a surrounding mode, and a deformation gap is formed between every two adjacent bendable portions. A sealing ring is arranged on the pipe body and is used for sealing the joint of the bendable part and the gasoline inlet of the gasoline pump; the pipe body is in threaded connection with a flange plate. The utility model has the advantages of novel structure and strong installation adaptability, and solves the problem that the oil leakage is easy to occur at the joint between the oil pipe orifice and the oil inlet of the gasoline pump in the prior art.

Description

Technical Field

[0001] This utility model belongs to the field of automotive oil pipe technology, and in particular relates to a high-strength stainless steel oil pipe for automotive engines. Background Technology

[0002] Fuel lines are an important component of a car, used to connect the fuel pump and the engine injectors to deliver fuel from the fuel tank to the engine, ensuring a stable fuel supply.

[0003] During installation, the fuel line opening is connected to the fuel pump inlet, and then the fuel line is fixed to the fuel pump using a flange. However, it is difficult to align the fuel line opening and the fuel pump inlet perfectly, and deviations are likely to occur. When the fuel flow rate is high, fuel leakage is likely to occur at the connection point. Furthermore, the size matching requirements between the fuel line opening and the fuel pump inlet are high, resulting in higher manufacturing costs. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art, and to provide a high-strength stainless steel oil pipe for automobile engines with a novel structure and strong installation adaptability, which solves the problem of oil leakage at the connection between the oil pipe port and the fuel pump inlet in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A high-strength stainless steel oil pipe for automotive engines includes: a pipe body, characterized in that: bendable portions are distributed around one end face of the pipe body, with deformation gaps between adjacent bendable portions; a sealing ring is provided on the pipe body for sealing the connection between the bendable portions and the fuel pump inlet; and a flange is threaded onto the pipe body. This oil pipe has a novel structure, strong installation adaptability, and solves the problem of oil leakage easily occurring at the connection between the oil pipe end and the fuel pump inlet in existing technologies.

[0007] Furthermore, the outer wall of the pipe body is provided with two protruding rings, and a limiting groove is formed between the two protruding rings. The limiting groove corresponds to the sealing ring. The sealing ring is clamped by the two protruding rings and cannot move freely, which is stable and reliable, and also facilitates the disassembly and replacement of the sealing ring.

[0008] Furthermore, the sealing ring is equipped with a retaining portion that covers the convex ring portion near the bendable portion. This further restricts the radial movement of the sealing ring, improving installation stability. The retaining portion also seals the connection between the bendable portion and the fuel pump inlet, providing a good seal.

[0009] Furthermore, the flange has a receiving groove at its central hole, which fits into the raised ring portion away from the bendable part. After the flange is installed in place, the raised ring portion away from the bendable part is located in the receiving groove. At this time, the flange abuts against the sealing ring, and the retaining part abuts against the fuel pump inlet, so that the sealing ring is clamped by the flange and the fuel pump, preventing it from loosening freely, thus ensuring stability and reliability.

[0010] Furthermore, the pipe body is equipped with a traction assembly, which includes a fixing ring, a chain, and a fixing seat. The chain connects the fixing ring and the fixing seat. The fixing ring is located on the pipe body, and the fixing seat has an installation through hole. During installation, the chain is straightened, and then a nail is inserted into the installation through hole to fix the fixing seat inside the vehicle. The traction assembly pulls the pipe body, acting simultaneously in multiple directions, effectively preventing the pipe body from swaying freely and improving its stability.

[0011] Furthermore, the fixing ring is provided with an extension that connects to the tube body, increasing the contact area between the fixing ring and the tube body, thereby improving the connection strength between the traction assembly and the tube body.

[0012] Furthermore, the surface of the pipe is coated with a high-temperature resistant layer, which improves the heat resistance of the pipe, allows it to adapt to the high-temperature conditions inside the vehicle, and extends its service life.

[0013] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0014] During installation, first bend the flexible section inwards to form a variable-diameter pipe head by closing the flexible sections in multiple directions. Insert the variable-diameter pipe head into the fuel pump inlet, then rotate the flange until it abuts against the sealing ring. At this point, the retaining part abuts against the fuel pump inlet. Finally, secure the flange. The variable-diameter pipe head facilitates oil flow between the pipe body and the fuel pump inlet. The sealing ring seals the connection between the variable-diameter pipe head and the fuel pump inlet through the retaining part, preventing oil leakage at this connection. The variable-diameter pipe head can adapt to fuel pump inlets of different sizes, offering strong installation adaptability and solving the problem of oil leakage at the connection between the oil pipe inlet and the fuel pump inlet in existing technologies. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0017] Figure 2 This is a schematic diagram of the connection between the tube body and the bendable part in Embodiment 1;

[0018] Figure 3 This is a schematic diagram of the sealing ring structure in Example 1;

[0019] Figure 4 This is a schematic diagram of the structure of the bendable part after bending in Example 1;

[0020] Figure 5 This is a schematic diagram of the connection between the pipe body and the fuel pump inlet in Example 1;

[0021] Figure 6 This is a schematic diagram of the flange structure in Example 1;

[0022] Figure 7 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0023] Figure 8 This is a schematic diagram of the connection between the tube body and the traction assembly in Example 2.

[0024] In the figure: 1-pipe body; 2-bendable part; 3-deformation gap; 4-sealing ring; 5-convex ring part; 6-limiting groove; 7-enclosing part; 8-flange; 9-accommodating groove; 10-fixing through hole; 11-pull assembly; 12-fixing ring; 13-chain; 14-fixing seat; 15-mounting through hole; 16-extension part. Detailed Implementation

[0025] like Figures 1 to 6 The image shown is an embodiment of this utility model.

[0026] A high-strength stainless steel oil pipe for automotive engines includes: a pipe body 1, which is made of stainless steel, providing reliable strength and resistance to deformation. The surface of the pipe body 1 is coated with a high-temperature resistant layer, which can be made of lead phosphate powder coating, improving the heat resistance of the pipe body 1, enabling it to withstand the high temperatures inside the vehicle, and extending its service life.

[0027] The tube body 1 has bendable portions 2 distributed around one end face, and there are deformation gaps 3 between adjacent bendable portions 2.

[0028] The tube body 1 is equipped with a sealing ring 4, and the outer wall of the tube body 1 is provided with two protruding rings 5. A limiting groove 6 is formed between the two protruding rings 5, and the limiting groove 6 corresponds to the sealing ring 4. The sealing ring 4 is clamped by the two protruding rings 5 ​​and cannot move freely, which is stable and reliable, and also facilitates the disassembly and replacement of the sealing ring 4.

[0029] The sealing ring 4 is provided with a retaining part 7, which covers the protruding ring part 5 near the bendable part 2, further restricting the radial movement of the sealing ring 4 and improving the installation stability. The retaining part 7 seals the connection between the bendable part 2 and the fuel pump inlet, and the sealing effect is good.

[0030] A flange 8 is threaded onto the pipe body 1. Rotating the flange 8 allows for adjustment of its position on the pipe body 1, thus facilitating the installation and removal of the sealing ring 4.

[0031] A receiving groove 9 is provided at the central hole of the flange 8, which is adapted to the convex ring 5 away from the bendable part 2. After the flange 8 is installed in place, the convex ring 5 away from the bendable part 2 is located in the receiving groove 9. At this time, the flange 8 abuts against the sealing ring 4, and the retaining part 7 abuts against the oil inlet of the fuel pump, so that the sealing ring 4 is clamped by the flange 8 and the fuel pump, and cannot loosen freely, which is stable and reliable.

[0032] The flange 8 is provided with a fixing through hole 10. A nail is inserted into the fixing through hole 10 to fix the flange 8 to the gasoline pump.

[0033] During installation, first bend the flexible part 2 inwards so that the flexible parts 2 in multiple directions surround to form a variable diameter pipe head. Insert the variable diameter pipe head into the fuel inlet of the fuel pump, and then rotate the flange 8 so that the flange 8 abuts against the sealing ring 4. At this time, the retaining part 7 abuts against the fuel inlet of the fuel pump. Then fix the flange 8. The variable diameter pipe head facilitates the flow of oil between the pipe body 1 and the fuel inlet of the fuel pump. The sealing ring 4 seals the connection between the variable diameter pipe head and the fuel inlet of the fuel pump through the retaining part 7, preventing oil leakage at the connection. The variable diameter pipe head can adapt to fuel inlets of different sizes of fuel pumps, has strong installation adaptability, and solves the problem of oil leakage that easily occurs at the connection between the oil pipe port and the fuel pump port in the prior art.

[0034] like Figure 7 and Figure 8 The image shown is a second embodiment of this utility model.

[0035] In the technical solution based on Embodiment 1, the pipe body 1 is provided with a traction assembly 11, which includes a fixing ring 12, a chain 13 and a fixing seat 14. The chain 13 connects the fixing ring 12 and the fixing seat 14. The fixing ring 12 is welded to the pipe body 1, and the fixing seat 14 is provided with an installation through hole 15.

[0036] During installation, the chain 13 is straightened and then nailed into the mounting through hole 15 to fix the fixing seat 14 inside the vehicle. The traction component 11 pulls the tube body 1, and the multiple directions work simultaneously to effectively prevent the tube body 1 from shaking freely, thus improving the stability of the tube body 1.

[0037] Both ends of the fixing ring 12 are provided with extensions 16, which are welded to the tube body 1, increasing the contact area between the fixing ring 12 and the tube body 1, thereby improving the connection strength between the traction assembly 11 and the tube body 1.

[0038] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A high-strength stainless steel oil pipe for automotive engines, comprising: tube body, Its features are: The tube body has bendable portions distributed around one end face, and there are deformation gaps between adjacent bendable portions. The pipe body is provided with a sealing ring, which is used to seal the connection between the bendable part and the fuel pump inlet. A flange is threaded onto the pipe body.

2. The high-strength stainless steel oil pipe for automotive engines according to claim 1, characterized in that: The outer wall of the tube is provided with two protruding rings, and a limiting groove is formed between the two protruding rings. The limiting groove corresponds to the sealing ring.

3. The high-strength stainless steel oil pipe for automotive engines according to claim 2, characterized in that: The sealing ring has a retaining portion that covers the protruding ring portion near the bendable portion.

4. The high-strength stainless steel oil pipe for automotive engines according to claim 2, characterized in that: The flange has a receiving groove at its central hole, which is adapted to the convex ring portion away from the bendable portion.

5. The high-strength stainless steel oil pipe for automotive engines according to claim 1, characterized in that: The tube body is provided with a traction assembly, which includes a fixing ring, a chain, and a fixing seat. The chain connects the fixing ring and the fixing seat. The fixing ring is located on the tube body, and the fixing seat is provided with a mounting through hole.

6. The high-strength stainless steel oil pipe for automotive engines according to claim 5, characterized in that: The fixing ring has an extension, which is connected to the tube body.

7. The high-strength stainless steel oil pipe for automotive engines according to claim 1, characterized in that: The surface of the tube is coated with a high-temperature resistant layer.

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