Fuel tank quick-plug connector with sealing ring structure

Abstract

The utility model discloses a fuel tank quick-plug connector with a sealing ring structure in the field of quick-plug connectors, which comprises a first plug-in part, a main body middle part and a second plug-in part which are sequentially and integrally connected and arranged, the first plug-in part, the main body middle part and the second plug-in part are of hollow structures, and internal cavities of the first plug-in part, the main body middle part and the second plug-in part are communicated with one another; the first inserting part is used for being communicated with an oil pipe, a limiting baffle and a plurality of first sealing grooves distributed at intervals are arranged on the periphery of the first inserting part, first sealing rings are arranged in the first sealing grooves, a circular truncated cone is arranged on the periphery of the middle of the body, the limiting baffle is located between the first sealing grooves and the circular truncated cone, and the second inserting part is used for being communicated with an oil tank. The sealing structure is additionally arranged at the male joint end, so that the problems that a sealing groove is difficult to process and the size is unstable when a female joint is a metal shell are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of quick connector, especially relates to a fuel tank quick connector with sealing ring structure. BACKGROUND

[0002] At present, the quick male connector on the market is mostly manufactured by plastic injection molding and metal forming process, and the female connector with a metal shell has the problems of difficult processing of sealing grooves, unstable size and the like, which cannot effectively design the sealing structure. INNOVATION CONTENT

[0003] The utility model discloses a kind of fuel tank quick connectors with sealing ring structure, by adding sealing structure in male connector end, solve the female connector with the metal shell and the problem of difficult processing of sealing grooves, unstable size.

[0004] The utility model discloses a kind of fuel tank quick connectors with sealing ring structure, which is achieved as follows: a kind of fuel tank quick connector with sealing ring structure, including the first plug-in part, main part middle part and second plug-in part that are integrally connected in sequence, the first plug-in part, main part middle part and second plug-in part are hollow structure and internal cavity is interconnected, the first plug-in part is used to communicate with oil pipe, outer periphery is provided with limit baffle and multiple interval distribution's sealing groove one, sealing ring one is provided in the sealing groove one, the main part middle part outer periphery is provided with circular table, the limit baffle is located between sealing groove one and circular table, the second plug-in part is used to communicate with oil tank.

[0005] The utility model uses, first plug-in part is inserted into metal female connector, until circular table and metal female connector port abut, finally second plug-in part is inserted into oil tank, can complete quick connection of oil pipe and oil tank. Compared with prior art, the utility model has the beneficial effects that: multiple sealing ring one is designed in the first plug-in part of quick connector, without processing sealing groove on metal female connector, both ensure the accuracy of groove size, and ensure the sealing and dustproof effect when quick connector is connected with female connector;Limit baffle is designed on the outer periphery of first plug-in part, can be cooperated with the clamp on metal female connector, avoid axial movement of quick connector;Circular table abuts with the port of metal female connector, can improve the pressure capacity of connector connection place;The whole quick connector adopts integrated structure, so that the connection between structure components is more compact, reduces joint and complex node, thereby improves the overall strength, stability and sealing property of quick connector.

[0006] As a further improvement of the utility model, the first plug-in part extends into the female joint, the female joint comprises a pipeline connecting part, a joint connecting part and a sleeve connecting part which are integrally connected in sequence, the joint connecting part is sleeved on the outer periphery of the first plug-in part, two clamping grooves which are symmetrically distributed are formed in the outer periphery of the sleeve connecting part, an elastic clamp is clamped and connected in the clamping groove, the clamp abuts against the limiting baffle, and the side surface of the sleeve connecting part abuts against the circular table.

[0007] As a further improvement of the utility model, the inner diameter of the pipeline connecting part is smaller than the inner diameter of the joint connecting part, and the inner diameter of the joint connecting part is smaller than the inner diameter of the sleeve connecting part.

[0008] As a further improvement of the utility model, the second plug-in part extends into the check valve, the check valve comprises a valve cap, a reversible cover plate is arranged at the bottom of the valve cap, and the cover plate is used for opening or closing the internal passage of the valve cap.

[0009] As a further improvement of the utility model, the cover plate is installed on the valve cap through a torsional spring and a pin.

[0010] As a further improvement of the utility model, a positioning groove and a plurality of square grooves are formed in the outer periphery of the valve cap, a positioning block is arranged in the positioning groove corresponding to the second plug-in part, a wedge-shaped block is arranged in the square groove corresponding to the second plug-in part, and a limiting step is arranged at the top of the valve cap corresponding to the second plug-in part.

[0011] As a further improvement of the utility model, a sealing groove two is arranged in the outer periphery of the limiting step, and a sealing ring two is arranged in the sealing groove two.

[0012] As a further improvement of the utility model, the limiting baffle is of an annular structure.

[0013] As a further improvement of the utility model, the first plug-in part, the middle part of the main body, the second plug-in part and the circular table are all made of plastic injection molding, and the female joint is made of metal material.

[0014] As a further improvement of the utility model, the sealing ring one and the sealing ring two are both made of one kind of material selected from the group consisting of silicone rubber, fluorine rubber and fluorosilicone rubber. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model embodiment one.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model embodiment one when connected with the female joint.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model embodiment two when connected with the check valve.

[0018] Figure 4 It is the cross section view when the utility model embodiment two is connected with check valve.

[0019] Wherein, 1 first plug-in part, 101 sealing groove one, 2 main part middle, 3 second plug-in part, 301 positioning block, 302 wedge block, 303 limiting step, 304 sealing groove two, 4 sealing ring one, 5 round table, 6 female joint, 601 pipeline connecting part, 602 joint connecting part, 603 sleeve part, 603a clamping groove, 604 clamping clamp, 7 check valve, 701 valve cap, 701a positioning groove, 701b square groove, 702 cover plate, 703 torsional spring, 704 pin, 8 sealing ring two, 9 limiting baffle. DETAILED DESCRIPTION

[0020] Embodiment

[0021] As Figure 1 shown, it is a kind of fuel tank quick plug-in joint with sealing ring structure, including the first plug-in part 1, main part middle 2 and second plug-in part 3 that are integrally connected in sequence, first plug-in part 1, main part middle 2 and second plug-in part 3 are hollow structure and the internal cavity is interconnected, first plug-in part 1 is used to communicate with oil pipe, and limiting baffle 9 and two interval distribution sealing groove one 101 are arranged on the outer periphery, sealing ring one 4 is arranged in sealing groove one 101, and round table 5 is arranged on the outer periphery of main part middle 2, limiting baffle 9 is located between sealing groove one 101 and round table 5, and second plug-in part 3 is used to communicate with oil tank;First plug-in part 1, main part middle 2, second plug-in part 3 and round table 5 are all made of plastic injection molding, can realize the continuous, fast production of quick plug-in joint, reduce manual intervention, to improve production efficiency.

[0022] As Figure 2 shown, first plug-in part 1 is inserted into female joint 6 made of metal material, and female joint 6 includes pipeline connecting part 601, joint connecting part 602 and sleeve part 603 that are integrally connected in sequence, the inner diameter of pipeline connecting part 601 is less than the inner diameter of joint connecting part 602, and the inner diameter of joint connecting part 602 is less than the inner diameter of sleeve part 603;Joint connecting part 602 is sleeved on the outer periphery of first plug-in part 1, and two mutually symmetrical distribution clamping grooves 603a are formed on the outer periphery of sleeve part 603, and elastic clamping clamp 604 is clamped and connected in clamping groove 603a, and the side surface of sleeve part 603 abuts against round table 5;Limiting baffle 9 is preferably annular structure, can ensure that clamping clamp 604 is always in abutment with limiting baffle 9;By limiting clamping clamp 604 in the area formed by limiting baffle 9 and clamping groove 603a, the purpose of preventing the natural drop of clamping spring is achieved.

[0023] Embodiment

[0024] As Figure 3 and 4As shown, the embodiment differs from embodiment one in that the second plug-in part 3 extends into the check valve 7, the check valve 7 comprises a valve cap 701, the bottom of the valve cap 701 is provided with a reversible cover plate 702, the cover plate 702 is used to open or close the internal passage of the valve cap 701, and can effectively prevent the backflow of oil gas in the oil tank, thereby reducing the air pollution of fuel vapor, preferably, the cover plate 702 is installed on the valve cap 701 through a torsional spring 703 and a pin 704.

[0025] The outer periphery of the valve cap 701 is provided with a positioning groove 701a and four square grooves 701b, the second plug-in part 3 is provided with a positioning block 301 corresponding to the positioning groove 701a, so that the deflection of the check valve 7 can be avoided, a wedge-shaped block 302 is arranged corresponding to the square groove 701b, so that quick assembly can be realized, a limiting step 303 is arranged corresponding to the top of the valve cap 701, a sealing groove two 304 is arranged on the outer periphery of the limiting step 303, a sealing ring two 8 is arranged in the sealing groove two 304, and the sealing ring one 4 and the sealing ring two 8 are both made of one of silicon rubber, fluorine rubber and fluorosilicone rubber.

[0026] The utility model discloses the advantages are as follows: through the design of the first plug-in part 1 and the second plug-in part 3, the quick connection of automobile fuel system cooperation oil filling pipeline can be realized, and the utility model is also applicable to the cavity connector product of the sealing emission demand of fuel tank welding joint (including fuel car, new energy automobile industry) and the sealing emission demand of cavity connector product, through the design of a plurality of sealing ring one 4 and sealing ring two 8, the oil gas leakage phenomenon caused by the loosening of the oil filling pipe from the oil tank under the motion state can be avoided, the quick plug-in joint is simple and reliable in structure, can satisfy more extensive use and application scene, is easier to realize the automatic assembly production, and improves the labor efficiency.

[0027] The utility model discloses the advantages are as follows: through the design of the first plug-in part 1 and the second plug-in part 3, the quick connection of automobile fuel system cooperation oil filling pipeline can be realized, and the utility model is also applicable to the cavity connector product of the sealing emission demand of fuel tank welding joint (including fuel car, new energy automobile industry) and the sealing emission demand of cavity connector product, through the design of a plurality of sealing ring one 4 and sealing ring two 8, the oil gas leakage phenomenon caused by the loosening of the oil filling pipe from the oil tank under the motion state can be avoided, the quick plug-in joint is simple and reliable in structure, can satisfy more extensive use and application scene, is easier to realize the automatic assembly production, and improves the labor efficiency. The utility model discloses the advantages are as follows: through the design of the first plug-in part 1 and the second plug-in part 3, the quick connection of automobile fuel system cooperation oil filling pipeline can be realized, and the utility model is also applicable to the cavity connector product of the sealing emission demand of fuel tank welding joint (including fuel car, new energy automobile industry) and the sealing emission demand of cavity connector product, through the design of a plurality of sealing ring one 4 and sealing ring two 8, the oil gas leakage phenomenon caused by the loosening of the oil filling pipe from the oil tank under the motion state can be avoided, the quick plug-in joint is simple and reliable in structure, can satisfy more extensive use and application scene, is easier to realize the automatic assembly production, and improves the labor efficiency.

Claims

1. A fuel tank quick connector with a seal ring structure, characterized by comprising: The first plug-in part, the main body middle part and the second plug-in part are hollow structures and the internal cavities are communicated with each other, the first plug-in part is used for communicating with the oil pipe, the outer periphery is provided with a limiting baffle and a plurality of interval distributed sealing grooves one, the sealing grooves one are provided with sealing rings one, the main body middle part outer periphery is provided with a circular truncated cone, the limiting baffle is located between the sealing grooves one and the circular truncated cone, and the second plug-in part is used for communicating with the oil tank.

2. A fuel tank quick connector with a seal ring structure according to claim 1, characterized in that, The first plug-in part extends into the female joint, the female joint comprises a pipeline connecting part, a joint connecting part and a sleeve part which are sequentially and integrally connected, the joint connecting part is sleeved on the outer periphery of the first plug-in part, the sleeve part is provided with two symmetrically distributed clamping grooves on the outer periphery, the clamping grooves are clamped with elastic clamps, the clamps abut against the limiting baffle, and the side surface of the sleeve part abuts against the circular truncated cone.

3. A fuel tank quick connector with a seal ring structure according to claim 2, characterized in that, The inner diameter of the pipeline connecting part is smaller than the inner diameter of the joint connecting part, and the inner diameter of the joint connecting part is smaller than the inner diameter of the sleeve part.

4. The fuel tank quick connector with a seal ring structure according to claim 1, characterized in that, The second plug-in part extends into the check valve, the check valve comprises a valve cap, the bottom of the valve cap is provided with a reversible cover plate, and the cover plate is used for opening or closing the internal passage of the valve cap.

5. A fuel tank quick connector with a seal ring structure according to claim 4, characterized in that, The cover plate is installed on the valve cap through a torsion spring and a pin.

6. A fuel tank quick connector with a seal ring structure according to claim 4, characterized in that, The outer periphery of the valve cap is provided with a positioning groove and a plurality of square grooves, the second plug-in part is provided with a positioning block corresponding to the positioning groove, a wedge-shaped block corresponding to the square grooves, and a limiting step corresponding to the top of the valve cap.

7. A fuel tank quick connector with a seal ring structure according to claim 6, characterized in that, The outer periphery of the limiting step is provided with a sealing groove two, and the sealing groove two is provided with a sealing ring two.

8. The fuel tank quick disconnect fitting with seal configuration of claim 1, wherein, The limiting baffle is an annular structure.

9. The fuel tank quick disconnect fitting with seal configuration of claim 1, wherein, The first plug-in part, the main body middle part, the second plug-in part and the circular truncated cone are all made of plastic injection, and the female joint is made of metal material.

10. The fuel tank quick connector with seal ring structure according to claim 7, characterized in that, The sealing ring one and the sealing ring two are made of one of silicon rubber, fluorine rubber and fluorosilicone rubber.

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