Oil gun guide rail of auxiliary gate unit, auxiliary gate unit and uncovered oil filling device

Abstract

The utility model relates to the technical field of automobile refueling devices, and provides a refueling gun guide rail of an auxiliary gate unit, the auxiliary gate unit and an uncovered refueling device, the refueling gun guide rail comprises a refueling gun guide rail body, and the refueling gun guide rail body is used for guiding a refueling gun to move; wherein at least one elastic limiting structure is arranged on the outer side wall of the oil gun guide rail body, the elastic limiting structure extends in the radial direction, and the elastic limiting structure tends to be attached to the outer side wall of the guide rail plate body under the action of external force, so that extra positioning support can be provided when an oil gun is inserted; the oil gun is kept at a stable position in the insertion process, so that the error of an operator is reduced; due to the radial extension design of the elastic limiting structure, circumferential support can be provided in the inserting process of the oil gun, and swing or deviation of the oil gun in the oil gun guide rail body is reduced. And the stability and safety in the refueling process can be ensured, accidental rotation or movement is prevented, and the operation accuracy and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile refueling devices, in particular to a refueling gun guide rail of an auxiliary gate unit, the auxiliary gate unit and a capless refueling device. Background Art

[0002] At present, a refueling device is usually installed on the fuel pipe of the automobile fuel tank to close the fuel inlet. When refueling, the cover of the refueling device is opened and the refueling gun is inserted into the fuel pipe along the refueling device. Therefore, the refueling device is an indispensable component in the automobile fuel system.

[0003] The related art refueling device realizes guidance through its refueling gun guide rail and allows the refueling gun to pass through. However, the refueling gun guide rail is difficult to disassemble and assemble, and is not convenient for mold opening and manufacturing. Utility Model Content

[0004] The utility model provides a fueling gun guide rail of a secondary gate unit, which is used to solve the problem that the fueling gun guide rail of a fueling device in the related art is difficult to disassemble and assemble and is inconvenient to open a mold for manufacturing.

[0005] The utility model provides a fuel gun guide rail of a secondary gate unit, comprising:

[0006] A fueling gun guide rail body, wherein the fueling gun guide rail body is used to guide the movement of the fueling gun;

[0007] Among them, the outer side wall of the fuel gun guide rail body is provided with at least one elastic limiting structure, and the elastic limiting structure extends radially. Under the action of external force, the elastic limiting structure has a tendency to fit together with the outer side wall of the guide rail plate body.

[0008] According to a fuel gun guide rail of a secondary gate unit provided by the utility model, the elastic limiting structure is an elastic member, one end of the elastic member is connected to the outer side wall of the fuel gun guide rail body, and the other end of the elastic member is spaced apart from the outer side wall.

[0009] According to a fuel gun guide rail of a secondary gate unit provided by the utility model, the elastic member includes a connecting portion and a bending portion, one end of the connecting portion is connected to the outer side wall of the fuel gun guide rail body, and the other end of the connecting portion is connected to the bending portion.

[0010] According to a fuel gun guide rail of a secondary gate unit provided by the utility model, the elastic member is an elastic plate body integrally formed with the fuel gun guide rail body.

[0011] According to a fueling gun guide rail of a secondary gate unit provided by the utility model, there are two elastic limiting structures, and the two elastic limiting structures are symmetrically and spaced apart on the outer side wall of the fueling gun guide rail body.

[0012] According to a fueling gun guide rail of a secondary gate unit provided by the utility model, a drainage channel is provided in the fueling gun guide rail body.

[0013] According to a fueling gun guide rail of a secondary gate unit provided by the utility model, the fueling gun guide rail body is provided with guide channels penetrating at two opposite ends;

[0014] Wherein, along the first direction, the opening diameter of one end of the guide channel is larger than the opening diameter of the other end of the guide channel.

[0015] According to a fuel gun guide rail of a secondary gate unit provided by the utility model, the inner side wall of the guide channel is provided with a guide curved surface, and the guide curved surface includes a first arc segment, a second arc segment and a guide segment connected in sequence;

[0016] The included angles between the first arc segment, the second arc segment and the center line of the guide channel are both acute angles, and the guide segment is parallel to the center line of the guide channel.

[0017] The utility model also provides a secondary gate unit, comprising:

[0018] Auxiliary gate housing and a fuel gun guide rail of the auxiliary gate unit;

[0019] The auxiliary gate housing is provided with a first inlet, a first outlet and an auxiliary gate chamber, wherein the first inlet and the first outlet are respectively located at opposite ends of the auxiliary gate chamber, and the first inlet, the auxiliary gate chamber and the first outlet are sequentially connected for inserting a refueling gun;

[0020] The auxiliary gate housing is provided with a fixed structure, and the elastic limiting structure corresponds to and cooperates with the fixed structure to limit the rotation of the fueling gun guide body relative to the auxiliary gate housing.

[0021] The utility model also provides a capless refueling device, comprising:

[0022] The auxiliary gate unit mentioned above;

[0023] A main cover unit, the main cover unit is fixedly matched with the auxiliary gate unit, the main cover unit has a second inlet, a second outlet and a main cover chamber, the second inlet and the second outlet are respectively located at opposite ends of the main cover chamber, the first inlet, the main cover chamber and the second outlet are sequentially connected to guide the refueling gun to be inserted for refueling and limit the insertion stroke of the refueling gun;

[0024] Wherein, the first outlet and the second inlet are butt-jointed and connected.

[0025] The fuel gun guide rail of the auxiliary gate unit provided by the utility model adopts the above structure. By setting an elastic limiting structure on the outer side wall of the fuel gun guide rail body, it can provide additional positioning support when the fuel gun is inserted, so that the fuel gun can maintain a stable position during the insertion process, which helps to reduce the operator's error; the radial extension design of the elastic limiting structure can provide circumferential support during the insertion of the fuel gun, reducing the swing or offset of the fuel gun in the fuel gun guide rail body. It helps to ensure stability and safety during the refueling process; at the same time, the elastic limiting structure can limit the rotation of the fuel gun guide rail relative to the installation position, which can ensure that the fuel gun guide rail maintains a fixed position and direction during use, prevent accidental rotation or movement, and improve the accuracy and safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a structural schematic diagram of the guide rail body of the fueling gun provided by the utility model;

[0028] Figure 2 It is a cross-sectional schematic diagram of the fueling gun guide rail body provided by the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the auxiliary gate unit provided by the utility model from a first perspective;

[0030] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at center A;

[0031] Figure 5 This is a schematic diagram of the structure of the auxiliary gate housing provided by the utility model from a first perspective;

[0032] Figure 6 It is a second perspective structural schematic diagram of the auxiliary gate housing provided by the utility model;

[0033] Figure 7 It is a structural schematic diagram of the coverless refueling device provided by the utility model;

[0034] Figure 8 It is a cross-sectional schematic diagram of a capless refueling device provided by the utility model.

[0035] Reference numerals:

[0036] 100, auxiliary gate housing; 110, auxiliary gate chamber; 120, drain outlet; 150, matching part; 160, fixing structure; 200, gate assembly; 300, fuel gun guide rail body; 310, drain channel; 330, positioning part; 340, guide channel; 341, guide curved surface; 3411, first circular arc segment; 3412, second circular arc segment; 3413, guide segment; 350, elastic limiting structure; 351, connecting part; 352, bending part; 400, blocking mechanism; 510, first sealing ring; 520, second sealing ring; 600, main cover housing; 610, main cover channel; 700, deflector; 710, deflection channel; 800, valve structure. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Combine the following Figure 1-Figure 8 The utility model describes a fueling gun guide rail of a secondary gate unit, a secondary gate unit and a capless fueling device. The capless fueling device comprises a secondary gate unit and a main cover unit.

[0039] Reference Figures 1 to 4 According to the present invention, a secondary gate unit is also provided, including: a secondary gate housing 100 and a fuel gun guide rail of the secondary gate unit.

[0040] Reference Figures 1 to 4 Specifically, the utility model provides a fuel gun guide rail of a secondary gate unit, including: a fuel gun guide rail body 300, the fuel gun guide rail body 300 is used to guide the movement of the fuel gun; wherein, the outer wall of the fuel gun guide rail body 300 is provided with at least one elastic limiting structure 350, the elastic limiting structure 350 extends radially, and under the action of external force, the elastic limiting structure 350 has a tendency to fit together with the outer wall of the guide rail plate body.

[0041] It should be noted that, in the embodiment of the utility model, the auxiliary gate housing 100 is provided with a first inlet, a first outlet and an auxiliary gate chamber 110, the first inlet and the first outlet are respectively located at the opposite ends of the auxiliary gate chamber 110, the first inlet, the auxiliary gate chamber 110 and the first outlet are connected in sequence for the insertion of the refueling gun; wherein, the auxiliary gate housing 100 is provided with a fixed structure 160, and the elastic limiting structure 350 corresponds to the fixed structure 160 to limit the rotation of the refueling gun guide body 300 relative to the auxiliary gate housing 100.

[0042] The fuel gun guide rail of the auxiliary gate unit provided by the utility model adopts the above structure. By setting an elastic limiting structure 350 on the outer side wall of the fuel gun guide rail body 300, additional positioning support can be provided when the fuel gun is inserted, so that the fuel gun can maintain a stable position during the insertion process, which helps to reduce the operator's error and ensure that the fuel gun can be accurately inserted into the auxiliary gate housing 100; the radial extension design of the elastic limiting structure 350 can provide circumferential support during the fuel gun insertion process, reducing the swing or offset of the fuel gun in the fuel gun guide rail body 300. It helps to ensure stability and safety during the refueling process; at the same time, the rotation of the fuel gun guide rail relative to the auxiliary gate housing 100 can be limited by the corresponding cooperation between the elastic limiting structure 350 and the fixed structure 160. It can ensure that the fuel gun guide rail maintains a fixed position and direction during use, prevents accidental rotation or movement, and improves the accuracy and safety of operation.

[0043] It is understandable that, referring to Figure 1 , Figure 3 and Figure 4 In the embodiment of the utility model, the elastic limiting structure 350 is an elastic member, one end of which is connected to the outer side wall of the fueling gun rail body 300, and the other end of the elastic member is spaced from the outer side wall. With the above structure, the presence of the elastic member simplifies the process, reduces the difficulty, and improves the accuracy in installation, thereby making the installation of the entire fueling gun rail body 300 and the auxiliary gate housing 100 smoother and more reliable; due to the flexible characteristics of the elastic member, it can reduce the transmission of vibration between the fueling gun rail body 300 and the auxiliary gate housing 100, thereby reducing the impact of noise and vibration on the surrounding environment and users.

[0044] Specifically, refer to Figure 1 , Figure 3 and Figure 4,,In the embodiment of the utility model, the elastic member includes a connecting portion 351 and a bending portion 352, one end of the connecting portion 351 is connected to the outer side wall of the fueling gun rail body 300, and the other end of the connecting portion 351 is connected to the bending portion 352. With the above arrangement, one end of the connecting portion 351 is connected to the outer side wall of the fueling gun rail body 300, which can provide a solid connection point to ensure that the fueling gun rail body 300 is firmly installed on the fixed structure 160 of the auxiliary gate housing 100; the design of the bending portion 352 makes the elastic member have a certain flexibility and elasticity, which can absorb vibration and impact from the outside, reduce the impact of vibration on the fueling gun rail body 300 and the auxiliary gate housing 100, and improve the stability and durability of the entire auxiliary gate unit; the elastic deformation of the bending portion 352 can adjust the alignment of the fueling gun rail body 300 to a certain extent, so that it can be more accurately installed on the auxiliary gate housing 100, reducing the deviation that may occur during the installation process. It is convenient for manufacturing and mold opening.

[0045] It should be noted that, refer to Figure 1 , Figure 3 and Figure 4 In the embodiment of the utility model, the above-mentioned fixing structure 160 is a fixing opening that passes through the inside and outside of the auxiliary gate housing 100, and the bending portion 352 is inserted into the fixing opening, which is convenient for the assembler to observe the assembly status and to apply pressure to the bending portion 352 through the fixing opening. The bending portion 352 is elastically deformed to facilitate the disassembly and assembly of the fueling gun guide body 300, and the operation is more convenient.

[0046] Specifically, refer to Figure 1 , Figure 3 and Figure 4 ,,In the embodiment of the utility model, the elastic member is an elastic plate body integrally formed with the fueling gun guide body 300, which has a more secure connection and is not prone to loosening or falling off, thereby improving the reliability of the connection; it has better durability and can maintain its elasticity and bending properties for a longer time, thereby extending its service life; the installation process may be simpler and faster, and no additional connecting parts or steps are required.

[0047] Specifically, refer to Figure 1 , Figure 3 and Figure 4 In the embodiment of the utility model, there are two elastic limiting structures 350, which are symmetrically and spaced apart on the outer side wall of the fueling gun guide body 300, so as to improve the reliability and stability of positioning. It can be understood that there are also two fixed structures 160, and the number of fixed structures 160 matches the number of elastic limiting structures 350. In some embodiments, there can be one, three, etc. elastic limiting structures 350, which are not limited here.

[0048] Specifically, refer to Figures 1 to 4as well as Figure 8 In the embodiment of the utility model, the fueling gun rail body 300 is provided with a guide channel 340 that passes through two opposite ends; wherein, along the first direction, the opening diameter of one end of the guide channel 340 is larger than the opening diameter of the other opposite end of the guide channel 340. With the above structure, by creating a channel with a gradually narrowing width in the guide channel 340, the control of the insertion of the fueling gun can be achieved. The larger entrance opening can facilitate the insertion of the fueling gun head. Especially at the beginning of the insertion, the larger opening can reduce the requirements for the alignment accuracy of the fueling gun, making it easier for the operator to correctly insert the fueling gun into the guide rail. When the fueling gun continues to advance into the fueling gun rail body 300, the gradually narrowing design of the channel helps to guide the fueling gun to align with the center line. The "centralization" effect can reduce the friction between the fueling gun and the inner wall of the fueling gun rail body 300, reduce the loss, and reduce the deflection that may occur during the insertion process, ensuring that the fueling gun remains stable during the operation, operates smoothly, and prevents swinging or loosening, thereby improving the safety and efficiency of the refueling operation.

[0049] Specifically, refer to Figure 1 and Figure 2 In an embodiment of the utility model, a guide curved surface 341 is provided on the inner side wall of the guide channel 340, and the guide curved surface 341 includes a first arc segment 3411, a second arc segment 3412 and a guide segment 3413 connected in sequence; wherein, the angles between the first arc segment 3411, the second arc segment 3412 and the center line of the guide channel 340 are both acute angles, and the guide segment 3413 is parallel to the center line of the guide channel 340.

[0050] With the above structure, the acute angle design of the first arc segment 3411 and the second arc segment 3412 enables the fuel gun to smoothly pass through these curved surfaces during the insertion process, reducing the resistance and friction that may be encountered during insertion; the guide segment 3413 is parallel to the center line of the guide channel 340, ensuring the precise guidance of the fuel gun during the insertion process, avoiding deviation or skew, so that the fuel gun can accurately enter the target position. Therefore, the design of the guide curved surface 341 helps to firmly lock the fuel gun in the correct position, avoiding possible shaking or displacement during the refueling process, and ensuring the stability and safety of the fuel gun.

[0051] Specifically, refer to Figures 1 to 4In this embodiment, a positioning portion 330 is provided on the outer wall of the fueling gun rail body 300, and a matching portion 150 is provided on the inner wall of the auxiliary gate chamber 110 of the auxiliary gate housing 100. The matching portion 150 is engaged with the positioning portion 330 to limit the circumferential rotation of the fueling gun rail body 300 relative to the auxiliary gate chamber 110. During the installation process, the matching structure of the positioning portion 330 and the matching portion 150 plays a positioning and limiting role, ensuring the stable installation of the fueling gun rail body 300, while preventing problems caused by rotation during use. It can be understood that the above-mentioned positioning portion 330 is a protruding structure, the matching portion 150 is a groove structure, or the two can be replaced with each other.

[0052] It should be noted that in the embodiment of the utility model, a drainage channel 310 is provided in the fuel gun guide body 300, and at least two elastic limiting structures 350 are symmetrically distributed on the opposite side walls of the fuel gun guide body 300 with the center of the drainage channel 310, so that the above-mentioned fuel gun guide body 300 has a symmetrical structure, which helps to balance the force and maintain the overall stability of the structure, and facilitates the manufacture of the fuel gun guide body 300.

[0053] It is understandable that, referring to Figures 1 to 4 In the embodiment of the utility model, the auxiliary gate housing 100 is provided with a drain port 120, which is connected to the drainage channel 310, and the auxiliary gate unit includes a first sealing ring 510, which is located between the outer wall of the fuel gun guide rail body 300 and the inner wall of the auxiliary gate chamber 110, and the first sealing ring 510 is sleeved on the outer wall of the fuel gun guide rail body 300, and the first sealing ring 510 is used to seal the gap between the outer wall of the fuel gun guide rail body 300 and the inner wall of the auxiliary gate chamber 110; wherein the first sealing ring 510 is located between the first inlet and the drain port 120 to cut off the communication between the first inlet and the drain port 120. With the above structure, the first sealing ring 510 is arranged between the outer wall of the fuel gun guide body 300 and the inner wall of the auxiliary gate chamber 110 to fill the gap between the two and enhance the sealing effect; since the first sealing ring 510 is located between the first inlet and the drain port 120, it realizes isolation between these two positions and prevents the liquid from flowing back to the first inlet during drainage.

[0054] Specifically, refer to Figure 3 , Figure 7 and Figure 8 In an embodiment of the utility model, the auxiliary gate unit further includes a gate assembly 200 and a blocking mechanism 400 .

[0055] Reference Figure 3 , Figure 7 and Figure 8In an embodiment of the utility model, the gate assembly 200 is used to open or close the first entrance. The gate assembly 200 is fixedly arranged inside the auxiliary gate chamber 110, and part of the structure of the gate assembly 200 is fixedly matched with the auxiliary gate housing 100; in a first direction, one end of the gate assembly 200 abuts against an inner wall of one end of the auxiliary gate chamber 110, and the other end of the gate assembly 200 abuts against an end of the fueling gun guide body 300; wherein, when the gate assembly 200 is subjected to the pushing force of the fueling gun, the first entrance is opened, and the opening direction of the gate assembly 200 is toward the location of the first outlet; after the gate assembly 200 is out of contact with the fueling gun, the first entrance is closed, and the closing direction of the gate assembly 200 is toward the location of the first entrance.

[0056] Reference Figure 3 , Figure 7 and Figure 8 In the embodiment of the utility model, the blocking mechanism 400 is arranged on the fueling gun rail body 300, and the blocking mechanism 400 has a blocking state and an open state; wherein the blocking mechanism 400 in the open state can open the drainage channel 310; the blocking mechanism 400 can be switched from the open state to the blocking state under the action of external force to block the drainage channel 310. Through the specially designed drain port 120 and the drainage channel 310, a small amount of water flowing in from the gap between the auxiliary gate housing 100 and the gate assembly 200 can be discharged from the drain port 120, thereby avoiding the decrease in the sealing performance of the auxiliary gate unit and the partial damage of the main cover unit caused by the insertion of the fueling gun after freezing; and since there are certain sealing requirements for the auxiliary gate unit and the entire capless fueling device during refueling, a blocking mechanism 400 is provided to block the drainage channel 310 and the drain port 120, so as to achieve sealed refueling and also correspond to the steam reflux type fueling gun.

[0057] It is understandable that, referring to Figure 3 , Figure 7 and Figure 8 In the embodiment of the utility model, the main cover unit is fixedly matched with the auxiliary gate unit, and the main cover unit has a second inlet, a second outlet and a main cover chamber, the second inlet and the second outlet are respectively located at opposite ends of the main cover chamber, and the first inlet, the main cover chamber and the second outlet are sequentially connected to guide the refueling gun to be inserted for refueling and limit the insertion stroke of the refueling gun; wherein the first outlet is docked and connected with the second inlet. Through the above structure, through a series of connected inlets and outlets, the refueling gun is guided to be inserted and its insertion stroke is limited, while ensuring the flow of the refueling medium.

[0058] Specifically, refer to Figure 1 , Figure 2 , Figure 7 and Figure 8In the embodiment of the utility model, the capless refueling device includes a second sealing ring 520, and an annular protrusion is provided on the refueling gun rail body 300. The annular protrusion is located at one end of the refueling gun rail body 300 close to the first outlet, and the annular protrusion is arranged around the end opening of the refueling gun rail body 300; the annular protrusion is inserted and circumferentially positioned with a part of the structure on the main cover unit close to the second inlet, wherein a part of the structure of the second sealing ring 520 is sleeved and matched with the annular protrusion, and another part of the structure of the second sealing ring 520 is abutted and matched with the main cover unit, so as to seal the butt connection between the first outlet and the second inlet. Through the above structure, a part of the structure of the second sealing ring 520 is sleeved and matched with the annular protrusion, and another part of the structure is abutted and matched with the main cover unit, thereby ensuring that the butt connection between the first outlet and the second inlet is reliably sealed, having an excellent sealing structure, and inhibiting the leakage of fuel vapor to the outside of the fuel tank.

[0059] It should be noted that, in the above embodiment, the first sealing ring 510 is a sealing rubber ring, and the second sealing ring 520 is a foam sealing ring. The foam sealing ring has good sealing performance, can fill and close irregular or incompletely fitting surfaces, and effectively prevent the penetration and leakage of gas or liquid. The foam sealing ring has a certain elasticity and softness, and can play a buffering and shock-absorbing effect under vibration or impact, thereby protecting components from damage.

[0060] It should also be noted that, referring to Figure 7 and Figure 8 In the embodiment of the utility model, the main cover unit includes: a main cover shell 600, the main cover unit is provided with a main cover channel 610; a flow guide 700, the flow guide 700 is connected to the main cover shell 600, the flow guide 700 is provided with a flow guide channel 710, the flow guide channel 710 is connected to the main cover channel 610 to form a main cover chamber; a valve structure 800, used to open or close the main cover channel 610, and the valve structure 800 can be automatically opened and pressure relief, the valve structure 800 and the main cover shell 600 can be The valve structure 800 is rotatably connected and is located inside the main cover channel 610. The valve structure 800 rotates relative to the main cover shell 600 to open or close the main cover channel 610. The port of the main cover channel 610 cooperates with the valve structure 800 to form a two-way valve. When the pressure in the main cover chamber is greater than a preset threshold, the valve structure 800 automatically opens and relieves pressure in the main cover chamber, and the direction of pressure relief of the valve structure 800 is opposite to the direction in which the valve structure 800 opens the main cover channel 610.

[0061] With the above structure, the main cover housing 600 and the deflector 700 constitute the main structure of the main cover unit, which can effectively isolate and protect the main cover channel 610 and internal components to prevent the influence of the external environment and the intrusion of substances; the main cover channel 610 is controlled to be opened and closed by the valve structure 800, and the pressure is automatically released when necessary to ensure that the pressure in the main cover chamber is within a safe range. When the pressure exceeds the preset threshold, that is, when the internal pressure of the fuel tank is abnormal, the valve structure 800 is opened, and the valve structure 800 will automatically open to release the pressure to prevent the fuel tank from being damaged, so as to protect safe operation.

[0062] It should be noted that the second inlet is an opening at one end of the main cover channel 610 of the main cover shell 600, and the second outlet is an opening at the other end opposite to the guide channel 710 of the guide device 700.

[0063] It can be understood that in the embodiment of the utility model, the overall assembly process of the above-mentioned capless refueling device is as follows: during installation, the main cover unit and the auxiliary gate unit are both installed at the refueling port of the automobile, the auxiliary gate unit cover is arranged on part of the structure of the main cover unit, the main cover unit is inserted into the refueling pipe of the fuel tank, and the auxiliary gate unit cover is installed on the body of the automobile.

[0064] It should be noted that, referring to the above figures and the figures, a guide groove is provided in the auxiliary gate chamber 110 of the auxiliary gate housing 100 of the auxiliary gate unit, and a guide protrusion is provided in the main cover housing 600 of the main cover unit, which cooperates with the guide groove to assemble the auxiliary gate housing 100 and the main cover housing 600.

[0065] It can be understood that in the embodiment of the utility model, the use process of the above-mentioned capless refueling device is as follows: the refueling gun pushes the gate assembly 200 to open the first inlet of the auxiliary gate unit, and the refueling gun passes through the gate assembly 200 and the refueling gun guide rail body 300 in sequence. Then, the refueling gun pushes the valve structure 800 to open the second inlet, and the refueling gun is inserted into the main cover channel 610 of the main cover shell 600 and the guide channel 710 of the guide device 700, and then refueling is carried out.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A fuel gun guide rail of a secondary gate unit, characterized in that: include: A refueling gun guide rail body (300), wherein the refueling gun guide rail body (300) is used to guide the movement of the refueling gun; Among them, the outer side wall of the fuel gun guide rail body (300) is provided with at least one elastic limiting structure (350), and the elastic limiting structure (350) extends radially. Under the action of external force, the elastic limiting structure (350) tends to fit together with the outer side wall of the guide rail plate body.

2. The fuel gun guide rail of the auxiliary gate unit according to claim 1, characterized in that: The elastic limiting structure (350) is an elastic member, one end of which is connected to the outer side wall of the fuel gun guide rail body (300), and the other end of which is spaced apart from the outer side wall.

3. The fuel gun guide rail of the auxiliary gate unit according to claim 2, characterized in that: The elastic member comprises a connecting portion (351) and a bent portion (352), one end of the connecting portion (351) is connected to the outer side wall of the fuel gun guide rail body (300), and the other end of the connecting portion (351) is connected to the bent portion (352).

4. The fuel gun guide rail of the auxiliary gate unit according to claim 3, characterized in that: The elastic member is an elastic plate body integrally formed with the fuel gun guide rail body (300).

5. The fuel gun guide rail of the auxiliary gate unit according to claim 1, characterized in that: There are two elastic limiting structures (350), and the two elastic limiting structures (350) are symmetrically and spaced apart on the outer side wall of the fueling gun guide rail body (300).

6. The fuel gun guide rail of the auxiliary gate unit according to claim 1, characterized in that: A drainage channel (310) is provided in the refueling gun guide rail body (300).

7. The fuel gun guide rail of the auxiliary gate unit according to claim 1, characterized in that: The refueling gun guide rail body (300) is provided with a guide channel (340) penetrating at two opposite ends; Wherein, along the first direction, the opening diameter of one end of the guide channel (340) is larger than the opening diameter of the other end of the guide channel (340).

8. The fueling gun guide rail of the auxiliary gate unit according to claim 7, characterized in that: The inner side wall of the guide channel (340) is provided with a guide curved surface (341), and the guide curved surface (341) comprises a first circular arc segment (3411), a second circular arc segment (3412), and a guide segment (3413) which are connected in sequence; The angles between the first arc segment (3411), the second arc segment (3412) and the center line of the guide channel (340) are both acute angles, and the guide segment (3413) is parallel to the center line of the guide channel (340).

9. A secondary gate unit, characterized in that: A fueling gun guide rail comprising an auxiliary gate housing (100) and the auxiliary gate unit according to any one of claims 1 to 8; The auxiliary gate housing (100) is provided with a first inlet, a first outlet and an auxiliary gate chamber (110), wherein the first inlet and the first outlet are respectively located at opposite ends of the auxiliary gate chamber (110), and the first inlet, the auxiliary gate chamber (110) and the first outlet are sequentially connected for inserting a refueling gun; The auxiliary gate housing (100) is provided with a fixing structure (160), and the elastic limiting structure (350) corresponds to and cooperates with the fixing structure (160) to limit the rotation of the fueling gun guide body (300) relative to the auxiliary gate housing (100).

10. A capless refueling device, characterized in that: include: The auxiliary gate unit as claimed in claim 9; A main cover unit, the main cover unit is fixedly matched with the auxiliary gate unit, the main cover unit has a second inlet, a second outlet and a main cover chamber, the second inlet and the second outlet are respectively located at opposite ends of the main cover chamber, the first inlet, the main cover chamber and the second outlet are sequentially connected to guide the refueling gun to be inserted for refueling and limit the insertion stroke of the refueling gun; Wherein, the first outlet and the second inlet are butt-jointed and connected.

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