Automobile high-pressure oil return pipe

Abstract

The utility model provides an automobile high-pressure oil return pipe which comprises a pipe body, connecting pieces are fixedly installed at the two ends of the pipe body, threaded sleeves are rotationally connected to the outer portions of the connecting pieces, a connector is arranged on one side of each threaded sleeve, and the connectors and the threaded sleeves are connected in a threaded connection mode. The high-pressure-resistant reinforcing layer is arranged, the reinforcing layer is the metal wire spirally wound on the inner wall of the pipe body, and the surface of the metal wire is coated with the anti-corrosion coating, so that when the pipe body is impacted by high-pressure fuel oil, the spirally wound metal wire can effectively disperse pressure, the overall strength and stability of the pipe body are enhanced, and the pipe body is prevented from being deformed and broken. Meanwhile, the metal material has high strength and toughness, the high-pressure resistance of the pipe body is further improved, even if the oil return pipe is in a high-pressure working environment for a long time, the oil return pipe can keep a good state, safe and efficient return of fuel oil is ensured, and the problem of fuel oil leakage caused by damage of the pipe body is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related field of automobile high pressure oil return pipe, and concretely relates to an automobile high pressure oil return pipe. BACKGROUND

[0002] In modern automobile engineering, the efficient operation of the fuel injection system is crucial for the optimization of engine performance. As one of the key components in the fuel injection system, the high pressure oil return pipe undertakes the important task of safely and efficiently returning the unburned fuel or excess fuel from the fuel nozzle to the fuel tank or high pressure oil pump. With the continuous progress of automobile technology, especially the widespread application of direct injection technology and turbocharging technology, more stringent requirements are placed on the design of high pressure oil return pipes.

[0003] In traditional high pressure oil return pipe design, due to the lack of effective high pressure resistant reinforcement structure, the pipe body is prone to deformation or even rupture after long-term exposure to high pressure fuel impact, which not only leads to fuel leakage, but also poses a serious threat to the normal operation of the engine.

[0004] Moreover, the existing oil return pipe lacks effective anti-vibration mechanisms. When the vehicle is driving on bumpy roads or the engine is under high load operation, the oil return pipe will sway due to vibration, which not only increases the risk of collision between the pipe body and surrounding components, but also may cause the pipe body connection to loosen, affecting the normal delivery of fuel.

[0005] Therefore, we have made improvements to this and propose an automobile high pressure oil return pipe. SUMMARY

[0006] In view of the deficiencies of the prior art, the utility model provides an automobile high pressure oil return pipe, which solves the problems mentioned in the background art.

[0007] In order to achieve the above-mentioned utility model purposes, the utility model provides the following technical scheme:

[0008] The automobile high pressure oil return pipe is used to solve the above-mentioned problems.

[0009] The present application is as follows:

[0010] The utility model relates to the related field of automobile high pressure oil return pipe, and concretely relates to an automobile high pressure oil return pipe.

[0011] The pipe body is a hollow tubular structure made of metal material, and a high-pressure resistant reinforcing layer is arranged on the inner wall of the pipe body, the high-pressure resistant reinforcing layer is a metal wire spirally wound on the inner wall of the pipe body, and the surface of the metal wire is coated with a corrosion-resistant coating.

[0012] The sealing mechanism comprises sealing rings and sealing grooves, and the sealing rings and the sealing grooves are both provided with two, the sealing rings are fixedly installed on one side surface of the connecting head, and the sealing grooves are opened on one side surface of the connecting piece, the connecting mode of the sealing rings and the sealing grooves is clamping connection, and the inner part of the sealing groove is adhesively connected with a sealing ring.

[0013] The anti-vibration mechanism comprises a supporting block, and the supporting block is fixedly connected to the surface of the automobile body, a placing groove is opened on the surface of the supporting block, and the pipe body is arranged in the placing groove, a fixing ring is arranged on the outer side of the pipe body, a clamping groove is opened on the surface of the placing groove, and the fixing ring is clamped in the clamping groove.

[0014] As a preferred technical scheme of the present application, the pipe body is made of stainless steel.

[0015] As a preferred technical scheme of the present application, the metal wire of the high-pressure resistant reinforcing layer is a copper wire.

[0016] As a preferred technical scheme of the present application, the corrosion-resistant coating is an epoxy resin coating.

[0017] As a preferred technical scheme of the present application, the supporting block is made of rubber.

[0018] As a preferred technical scheme of the present application, the connecting mode between the fixing ring and the pipe body is welding connection.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] In the scheme of the present application:

[0021] 1. By arranging the high-pressure resistant reinforcing layer, the reinforcing layer is a metal wire spirally wound on the inner wall of the pipe body, and the surface of the metal wire is coated with a corrosion-resistant coating, so that when the pipe body is subjected to high-pressure fuel impact, the spirally wound metal wire can effectively disperse the pressure, enhance the overall strength and stability of the pipe body, and prevent deformation and rupture. At the same time, the metal material itself has high strength and toughness, which further improves the high-pressure resistance of the pipe body. Even if it is in a high-pressure working environment for a long time, the return oil pipe can also maintain good condition, ensuring safe and efficient return of fuel, and effectively avoiding the problem of fuel leakage caused by damage to the pipe body.

[0022] 2. Through the use of the anti-vibration mechanism, the supporting block is fixedly connected to the surface of the automobile body, providing a solid support basis for the pipe body, the placing groove opened on the surface accurately accommodates the pipe body, so that the pipe body has stable support in the vibration environment. The fixing ring sleeved on the outer side of the pipe body is tightly matched with the clamping groove on the surface of the placing groove, further limiting the shaking range of the pipe body and preventing it from swinging randomly due to vibration. The supporting block made of rubber material can effectively absorb and disperse vibration energy due to its good elasticity and buffering performance, greatly reducing the impact of vibration on the pipe body. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0024] Figure 2 It is a three-dimensional structure schematic diagram of the high-pressure-resistant reinforcing layer of the utility model;

[0025] Figure 3 It is a structure schematic diagram of the section of the sealing mechanism of the utility model;

[0026] Figure 4 It is a three-dimensional structure schematic diagram of the connecting head of the utility model;

[0027] Figure 5 It is an enlarged structure schematic diagram of the A part of the utility model Figure 3

[0028] Figure 6 It is a three-dimensional structure schematic diagram of the anti-vibration mechanism of the utility model.

[0029] Indications in the figure:

[0030] 1, pipe body; 101, high-pressure-resistant reinforcing layer; 2, connecting piece; 3, threaded sleeve; 4, connecting head; 5, sealing mechanism; 501, sealing ring; 502, sealing groove; 503, sealing ring; 6, anti-vibration mechanism; 601, supporting block; 602, placing groove; 603, fixing ring; 604, clamping groove. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings. Obviously, the described examples are part of the embodiments of the utility model, rather than all the embodiments.

[0032] Therefore, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the claimed utility model, but only represents some embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.​

[0033] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0034] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0035] In the description of the utility model, it should be noted that the position or location relationship indicated by the terms "upper", "lower" and the like is based on the position or location relationship shown in the drawings, or the position or location relationship commonly placed when the utility model product is used, or the position or location relationship commonly understood by the person skilled in the art, such terms are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific position, be constructed and operated in a specific position, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0036] To solve the technical problems in the background art, the following automobile high-pressure return oil pipe is given:

[0037] In combination with Figure 1 - Figure 6 The utility model provides an automobile high-pressure return oil pipe, which includes a pipe body 1, both ends of the pipe body 1 are fixedly installed with connecting pieces 2, the outer portions of the connecting pieces 2 are rotationally connected with threaded sleeves 3, one side of the threaded sleeve 3 is provided with a connecting head 4, the connecting head 4 and the threaded sleeve 3 are connected in a threaded connection mode, a sealing mechanism 5 is arranged between the connecting head 4 and the connecting piece 2, and the outer portion of the pipe body 1 is provided with an anti-vibration mechanism 6. The pipe body 1 is a hollow tubular structure made of metal material, the inner wall of the pipe body 1 is provided with a high-pressure-resistant reinforcing layer 101, the high-pressure-resistant reinforcing layer 101 is a metal wire spirally wound on the inner wall of the pipe body 1, and the surface of the metal wire is coated with a corrosion-resistant coating; the high-pressure-resistant reinforcing layer 101 can effectively enhance the ability of the pipe body 1 to withstand high pressure, prevent it from deforming or breaking under the impact of high-pressure fuel, and the corrosion-resistant coating can resist the corrosion of chemical substances in fuel and humid environment, prolonging the service life of the pipe body 1

[0038] The sealing mechanism 5 comprises sealing rings 501 and sealing grooves 502, and the sealing rings 501 and the sealing grooves 502 are both provided with two, the sealing ring 501 is fixedly installed on one side surface of the connecting head 4, and the sealing groove 502 is opened on one side surface of the connecting piece 2, the connecting mode of the sealing ring 501 and the sealing groove 502 is clamping connection, and the sealing groove 502 is adhesively connected with a sealing ring 503; the double sealing design greatly improves the sealing performance of the automobile high-pressure oil return pipe, when the connecting head 4 is connected with the connecting piece 2, the sealing ring 501 is tightly embedded in the sealing groove 502, and the sealing ring 503 is tightly combined with the sealing ring 501 and the sealing groove 502, forming a tight sealing space, which can effectively cope with the high-pressure fuel environment, prevent fuel from seeping out of the connecting part, and ensure the sealing performance and stability of the fuel injection system.

[0039] The anti-vibration mechanism 6 comprises a support block 601, and the support block 601 is fixedly connected to the surface of the automobile body, the surface of the support block 601 is provided with a placing groove 602, and the pipe body 1 is arranged in the placing groove 602, the outer side of the pipe body 1 is provided with a fixing ring 603, the surface of the placing groove 602 is provided with a clamping groove 604, and the fixing ring 603 is clamped in the clamping groove 604, when the automobile runs on the bumpy road or the engine is in the high-load running state, the anti-vibration mechanism 6 can effectively buffer and absorb the vibration energy, reduce the impact of vibration on the pipe body 1, avoid the collision between the pipe body 1 and the surrounding parts and the loosening of the connecting part, and ensure that the high-pressure oil return pipe always maintains a good working state, which provides a strong guarantee for the safe and stable return of fuel.

[0040] As a preferred embodiment, on the basis of the above mode, further, the pipe body 1 is made of stainless steel.

[0041] In this embodiment: stainless steel has excellent corrosion resistance, can resist the corrosion of chemical substances in fuel and humid environment, greatly prolongs the service life of the pipe body 1, and reduces the damage and replacement frequency of the pipe body 1 caused by corrosion. At the same time, stainless steel also has high strength and good toughness, which makes the pipe body 1 maintain stable structure when bearing high-pressure fuel impact, and is not easy to deform or break, effectively protecting the safe delivery of fuel.

[0042] As a preferred embodiment, on the basis of the above mode, further, the metal wire of the high-pressure resistant reinforcing layer 101 is a copper wire.

[0043] In the embodiment, the copper wire has good flexibility and ductility, which enables it to be tightly and uniformly spirally wound on the inner wall of the pipe body 1, forming a good fit with the pipe body 1 and effectively enhancing the ability of the pipe body 1 to withstand high pressure. When high-pressure fuel flows in the pipe body 1, the copper wire can disperse the pressure, preventing local pressure from being too high and causing the pipe body 1 to deform or rupture. At the same time, the copper wire also has certain corrosion resistance and can resist the corrosion of chemical substances in the fuel to some extent, prolonging the service life of the high-pressure-resistant reinforcing layer 101.

[0044] As a preferred embodiment, on the basis of the above-mentioned mode, further, the anticorrosive coating is an epoxy resin coating.

[0045] In the embodiment, the epoxy resin coating has excellent adhesion and can be tightly attached to the surface of the metal wire of the high-pressure-resistant reinforcing layer 101, forming a strong and continuous protective film that effectively prevents water, chemicals, and other corrosive media in the fuel from contacting the metal wire, thereby greatly slowing down the corrosion rate of the metal wire and prolonging the service life of the pipe body 1.

[0046] As a preferred embodiment, on the basis of the above-mentioned mode, further, the support block 601 is provided as a rubber block.

[0047] In the embodiment, the rubber block has good elasticity and buffering performance, which can effectively absorb and disperse vibration energy when the vehicle is driving on a bumpy road or the engine is under high-load operation, greatly reducing the impact of vibration on the pipe body 1; and can provide more stable and comfortable support, reducing noise and wear caused by rigid contact.

[0048] As a preferred embodiment, on the basis of the above-mentioned mode, further, the connection between the fixing ring 603 and the pipe body 1 is a welded connection.

[0049] In the embodiment, the welded connection can achieve a high degree of tight combination between the fixing ring 603 and the pipe body 1, forming a firm overall structure with extremely high connection strength, which can withstand large external forces and vibrations, effectively preventing the fixing ring 603 from loosening or shifting on the pipe body 1, and ensuring that the fixing ring 603 is always stably sleeved on the outside of the pipe body 1 and clamped in the clamping groove 604 of the placement groove 602.

[0050] The above is the working process of the entire device, and the contents not described in detail in the specification all belong to the existing technology known to those skilled in the art.

[0051] The above examples are only used to illustrate the technical solutions described in the utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the above-described various embodiments, the utility model is not limited to the above-described specific embodiments, and therefore any modification or equivalent replacement of the utility model is allowed. Any technical solution and improvement that does not deviate from the spirit and scope of the utility model is included in the scope of the claims of the utility model.

Claims

1. A high-pressure return oil pipe for automobiles, comprising a pipe body (1), characterized in that: Both ends of the pipe body (1) are fixedly installed with connectors (2), and the outside of the connectors (2) is rotatably connected with threaded sleeves (3). A connector (4) is provided on one side of the threaded sleeve (3), and the connector (4) and the threaded sleeve (3) are connected by a threaded connection. A sealing mechanism (5) is provided between the connector (4) and the connector (2), and an anti-vibration mechanism (6) is provided on the outside of the pipe body (1). The tube body (1) is a hollow tubular structure made of metal, and the inner wall of the tube body (1) is provided with a high pressure resistant reinforcing layer (101). The high pressure resistant reinforcing layer (101) is a metal wire spirally wound on the inner wall of the tube body (1), and the surface of the metal wire is coated with an anti-corrosion coating. The sealing mechanism (5) includes a sealing ring (501) and a sealing groove (502), and there are two sealing rings (501) and two sealing grooves (502). The sealing ring (501) is fixedly installed on one side surface of the connector (4), and the sealing groove (502) is opened on one side surface of the connector (2). The sealing ring (501) and the sealing groove (502) are connected by a snap-fit ​​connection, and a sealing ring (503) is bonded to the inside of the sealing groove (502). The vibration damping mechanism (6) includes a support block (601) and the support block (601) is fixedly connected to the surface of the car body. The surface of the support block (601) is provided with a placement groove (602) and the tube (1) is placed inside the placement groove (602). The outer side of the tube (1) is fitted with a fixing ring (603) and the surface of the placement groove (602) is provided with a slot (604) and the fixing ring (603) is locked in the slot (604).

2. The automotive high-pressure return oil pipe according to claim 1, characterized in that: The tube body (1) is made of stainless steel.

3. The automotive high-pressure oil return pipe according to claim 1, characterized in that: The metal wire of the high-pressure resistant reinforcing layer (101) is copper wire.

4. The automotive high-pressure return oil pipe according to claim 1, characterized in that: The anti-corrosion coating is an epoxy resin coating.

5. The automotive high-pressure oil return pipe according to claim 1, characterized in that: The support block (601) is a rubber block.

6. The automotive high-pressure return oil pipe according to claim 1, characterized in that: The connection between the fixing ring (603) and the pipe body (1) is a welded connection.

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