Threaded opening structure of oil filling pipe

Abstract

The utility model belongs to the technical field of oil filling pipe body connectors, and particularly relates to an oil filling pipe body threaded opening structure which comprises an oil filling pipe body and a connector installed at one end of the oil filling pipe body. One end of the oil filling pipe body is movably inserted into the butt joint piece, a plurality of limiting conical blocks are annularly arranged on the outer wall of the butt joint piece, the outer portions of the limiting conical blocks are provided with threaded sleeves which are pressed inwards, and the limiting conical blocks are all sunken into the outer wall of the oil filling pipe body based on pressing. According to the oil filling pipe, the limiting conical blocks capable of being pressed and the threaded sleeves are additionally arranged, and the limiting conical blocks can be pressed into the oil filling pipe body through the threaded sleeves, so that the end part of the oil filling pipe body is limited through the limiting conical blocks, and the oil filling pipe body can be prevented from being separated from the connector.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel filler pipe body interfaces, and particularly relates to a fuel filler pipe threaded port structure. Background Art

[0002] The fuel pipe body includes an inner rubber layer, a fabric reinforcement layer and an outer rubber layer. When the fuel pipe body is connected to the fuel gun, a joint is used. The two ends of the joint are respectively provided with a threaded interface and a docking interface. The fuel pipe body is sleeved on the docking interface. The outside of the docking interface is threaded with a screw sleeve for tightening the fuel pipe body. The fuel pipe body is installed on the docking interface through an extrusion connection. When the pulling force between the fuel gun and the fuel pipe body is greater than the extrusion force, the fuel pipe body and the fuel gun are separated, which greatly reduces the stability of the connection between the fuel pipe body and the fuel gun. Utility Model Content

[0003] The purpose of the present utility model is to provide a threaded opening structure of a fuel filler pipe body, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a threaded port structure of a fuel filler pipe, comprising: a fuel filler pipe body and a connector installed at one end of the fuel filler pipe body, the two ends of the connector respectively provided with a communicating external threaded interface and a docking piece, one end of the fuel filler pipe body is movably plugged into the docking piece, a plurality of limiting cone blocks are provided in a ring shape on the outer wall of the docking piece, the outside of the plurality of limiting cone blocks are provided with inward-pressing screw sleeves, and the plurality of limiting cone blocks are sunk into the outer wall of the fuel filler pipe body based on the pressing.

[0005] Preferably, the docking part has a limiting interface and a docking interface which are sleeved from the outside to the inside, and both the limiting interface and the docking interface are welded on the connecting head, and the docking interface is connected with the external threaded interface, and an insertion area for inserting the refueling pipe body is formed between the limiting interface and the docking interface, and an external threaded groove which is threadedly connected to the threaded sleeve is formed on the outer wall of the limiting interface.

[0006] Preferably, the limiting interface is penetrated from the outside to the inside by openings for accommodating the limiting cone block, and each of the openings is provided with an elastic sheet connected to the limiting cone block on the side facing away from the external threaded interface, and each of the elastic sheets extends outwardly at an end close to the limiting cone block to the outside of the opening.

[0007] Preferably, a plug-in compartment is provided on the inner wall of each of the openings, and one end of the elastic sheet is provided with a plug-in end plugged into the plug-in compartment.

[0008] Preferably, a groove is provided on the inner wall of each of the plug-in compartments, and a protrusion that engages in the groove is provided on each of the plug-in ends.

[0009] Preferably, the end of the limit interface facing away from the external threaded interface is provided with a first sealing gasket sleeved on the refueling pipe body, the outer side of the end of the screw sleeve is provided with an annular retaining ring abutting against the first sealing gasket, and a second sealing gasket for sealing is provided between the screw sleeve and the connector.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] (1) The utility model adds a plurality of pressable limiting cone blocks and screw sleeves, and the plurality of limiting cone blocks can be pressed into the fuel filler pipe body through the screw sleeve, thereby limiting the end of the fuel filler pipe body through the plurality of limiting cone blocks, thereby preventing the fuel filler pipe body from being separated from the connecting head.

[0012] (2) The present invention facilitates the installation of the end of the fuel filler pipe body on one end of the connector by adding a coaxial limit interface and a docking interface. At the same time, multiple openings are provided on the limit interface to provide installation positions for multiple limit cone blocks.

[0013] (3) The utility model adds an elastic sheet, which can elastically install the limiting cone block in the opening. The elastic sheet allows the screw sleeve to drive the limiting cone block to press inward in the opening, making it easy to adjust the position of the limiting cone block. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view of the utility model;

[0015] Figure 2 This is the first cross-sectional view of the present utility model;

[0016] Figure 3 This is a second cross-sectional view of the present invention;

[0017] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 5 for Figure 3 Cross-sectional view at AA in the middle;

[0019] Figure 6 This is a front view of the connector and the docking piece of the utility model;

[0020] In the figure: 1. Fuel filler pipe body; 2. Sleeve; 3. Connector; 4. External thread interface; 5. Docking interface; 6. Limit interface; 7. Opening; 8. Elastic sheet; 9. Limit cone block; 10. First sealing gasket; 11. Protrusion; 12. Insertion area; 13. Insertion compartment; 14. Insertion end; 15. Groove; 16. Second sealing gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] refer to Figure 1-3 and Figure 6 As shown, the utility model provides a fuel filler pipe threaded port structure, comprising: a fuel filler pipe body 1 and a connector 3 installed at one end of the fuel filler pipe body 1, both ends of the connector 3 are respectively provided with a communicating external threaded interface 4 and a docking piece, one end of the fuel filler pipe body 1 is movably inserted into the docking piece, and a plurality of limiting cone blocks 9 are provided in a ring shape on the outer wall of the docking piece, and the outside of the plurality of limiting cone blocks 9 is provided with a screw sleeve 2 for pressing inward, so that the plurality of limiting cone blocks 9 are all sunk into the outer wall of the fuel filler pipe body 1 due to the pressing.

[0023] Combine Figure 1-3 and Figure 6 As shown, the docking piece has a limit interface 6 and a docking interface 5 which are sleeved from the outside to the inside. The limit interface 6 and the docking interface 5 are both welded to the connector 3, and the docking interface 5 is connected to the external threaded interface 4. An insertion area 12 for inserting the refueling pipe body 1 is formed between the limit interface 6 and the docking interface 5, and an external threaded groove which is threadedly connected to the threaded sleeve 2 is formed on the outer wall of the limit interface 6.

[0024] As described above, when using the fuel pipe body 1, connector 3, external threaded interface 4 and docking piece provided by the present invention, one end of the fuel pipe body 1 is inserted into the insertion area 12 between the limit interface 6 and the docking interface 5. At this time, the screw sleeve 2 is screwed on the limit interface 6. When one end of the screw sleeve 2 is close to the connector 3, multiple limit cone blocks 9 are pressed onto the outer wall of the fuel pipe body 1, thereby improving the stability of the connection between the fuel pipe body 1 and the connector 3, and facilitating the connection of the connector 3 to the fuel gun through the external threaded interface 4.

[0025] Further, in order to facilitate the movable installation of the limiting cone block 9 on the limiting interface 6, refer to Figure 2-3As shown, the limiting interface 6 is traversed from outside to inside by openings 7 for accommodating limiting cone blocks 9. Each opening 7 is provided with an elastic piece 8 connected to the limiting cone block 9 on the side facing away from the externally threaded interface 4. Each elastic piece 8 extends outwardly and tilted to the outside of the opening 7 at one end adjacent to the limiting cone block 9. The opening 7 provides a mounting position for the external limiting cone block 9 on the limiting interface 6. The elastic piece 8 allows the limiting cone block 9 to be elastically mounted within the opening 7. When the threaded sleeve 2 is threaded onto the limiting interface 6, one end of the threaded sleeve 2 abuts against the elastic piece 8, thereby driving the elastic piece 8 inward, which in turn drives the limiting cone block 9 to press against the outer wall of the fuel filler pipe body 1 within the opening 7.

[0026] Further, in order to facilitate the replacement of the limit block and the elastic piece 8, refer to Figure 4-5 As shown, an insertion chamber 13 is formed on the inner wall of each opening 7, and one end of the elastic piece 8 is provided with an insertion end 14 that is inserted into the insertion chamber 13. The elastic piece 8 is removably inserted into the insertion chamber 13 via the insertion end 14, which facilitates the removable installation of the elastic piece 8 and the limiting cone block 9 in the opening 7 and the replacement of the elastic piece 8 and the limiting cone block 9.

[0027] Further, in order to improve the stability of the plug-in terminal 14, refer to Figure 4 As shown, a groove 15 is formed on the inner wall of each insertion chamber 13, and a protrusion 11 is provided on each plug-in terminal 14 to engage with the groove 15. When the plug-in terminal 14 is inserted into the insertion chamber 13, the protrusion 11 engages with the groove 15, which can improve the stability of the plug-in terminal 14 in the insertion chamber 13.

[0028] Further, in order to improve the sealing between the fuel pipe body 1 and the connecting pipe, refer to Figure 1-2 As shown, the end of the stopper interface 6 facing away from the external threaded interface 4 is provided with a first sealing gasket 10 that is sleeved on the fuel filler pipe body 1. An annular retaining ring is provided on the outer side of the end of the threaded sleeve 2, which abuts against the first sealing gasket 10. A second sealing gasket 16 is provided between the threaded sleeve 2 and the connector 3 for sealing. After the threaded sleeve 2 is installed on the stopper interface 6, the first sealing gasket 10 and the second sealing gasket 16 can seal the exterior of the stopper interface 6.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A threaded port structure for a fuel filler pipe, characterized in that: include: A fuel filler pipe body (1) and a connector (3) installed at one end of the fuel filler pipe body (1), wherein both ends of the connector (3) are respectively provided with a connected external threaded interface (4) and a docking piece, and one end of the fuel filler pipe body (1) is movably plugged into the docking piece, and a plurality of limiting cone blocks (9) are provided in a ring shape on the outer wall of the docking piece, and the outer parts of the plurality of limiting cone blocks (9) are provided with screw sleeves (2) for pressing inward, so that the plurality of limiting cone blocks (9) are sunk into the outer wall of the fuel filler pipe body (1) due to the pressing.

2. The threaded opening structure of a fuel filler pipe according to claim 1, characterized in that: The docking member comprises a limiting interface (6) and a docking interface (5) which are sleeved from the outside to the inside. The limiting interface (6) and the docking interface (5) are both welded to the connector (3), and the docking interface (5) is communicated with the external threaded interface (4). A plug-in area (12) for plugging in the refueling pipe body (1) is formed between the limiting interface (6) and the docking interface (5), and an external threaded groove which is screwed to the threaded sleeve (2) is formed on the outer wall of the limiting interface (6).

3. The threaded port structure of a fuel filler pipe according to claim 2, characterized in that: The limiting interface (6) is penetrated from outside to inside by openings (7) for accommodating the limiting cone block (9), and each of the openings (7) is provided with an elastic sheet (8) connected to the limiting cone block (9) on the side facing away from the external threaded interface (4), and each of the elastic sheets (8) is inclined outwardly and extends to the outside of the opening (7) at one end close to the limiting cone block (9).

4. The threaded opening structure of a fuel filler pipe according to claim 3, characterized in that: An inserting chamber (13) is provided on the inner wall of each opening (7), and one end of the elastic sheet (8) is provided with an inserting end (14) inserted into the inserting chamber (13).

5. The threaded opening structure of a fuel filler pipe according to claim 4, characterized in that: A groove (15) is provided on the inner wall of each plug-in compartment (13), and a protrusion (11) is provided on each plug-in end (14) and is engaged in the groove (15).

6. The threaded opening structure of a fuel filler pipe according to claim 1, characterized in that: The end of the limit interface (6) facing away from the external thread interface (4) is provided with a first sealing gasket (10) sleeved on the refueling pipe body (1); the outer side of the end of the screw sleeve (2) is provided with an annular retaining ring abutting against the first sealing gasket (10); and a second sealing gasket (16) for sealing is provided between the screw sleeve (2) and the connector (3).

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