Mechanical self-resetting mechanism for preventing breakage of a fuel dispenser nozzle

Abstract

The application relates to the technical field of related equipment for gas stations, in particular to a fuel gun anti-pulling-off mechanical self-resetting mechanism for gas stations, which comprises a fuel gun, an oil inlet pipe, an oil guide pipe butt joint, a butt joint locking mechanism and an unlocking mechanism, the tail end of the fuel gun is connected with the oil inlet pipe, the tail end of the oil inlet pipe is connected with the oil guide pipe butt joint, the butt joint locking mechanism is arranged between the oil inlet pipe and the oil guide pipe butt joint, and the butt joint locking mechanism comprises a bearing cylinder, a driving cylinder, a plug-in pipe, a sliding cavity, a lock rod, an adjusting plate, a sliding groove and a butt joint groove. In the utility model, the oil inlet pipe and the oil guide pipe butt joint can be classifiedly responded to different pulling forces, when a first-level slight pulling is realized, unnecessary complete separation caused by slight external force in normal operation can be avoided, the continuity of the fueling process is ensured, when a greater pulling force greater than a first-level threshold value is received, second-level separation can be realized through the unlocking mechanism and the butt joint locking mechanism linkage.

Description

Technical Field

[0001] This application relates to the technical field of equipment used in gas stations, and in particular to a mechanical self-resetting mechanism for preventing the fuel nozzle from breaking at a gas station. Background Technology

[0002] In the daily operation of gas stations, the fuel nozzle is a key terminal device for oil delivery. The safety of its connection with the oil pipeline is directly related to operational safety. Currently, fuel nozzles face a prominent problem during use: when a vehicle is accidentally started, the driver is negligent in operation, or there is an unexpected external pull, the fuel nozzle will be subjected to a strong pull in an instant. The existing connection structure lacks an effective buffer and separation design, which can easily lead to the oil pipeline being directly pulled off.

[0003] Currently, although improvements have been made in some scenarios by using components such as breakaway valves, existing solutions have obvious limitations. For example, the current breakage threshold is difficult to control precisely. If the threshold is too low, it is easy to be accidentally triggered by slight pulling force during normal operation, affecting refueling efficiency. If the threshold is too high, it cannot separate in time during dangerous pulling, which may still lead to pipeline breakage. In addition, some complex anti-breakage devices have high manufacturing costs, which is not conducive to large-scale promotion and application. Utility Model Content

[0004] To address the problem that existing fuel nozzles are prone to pipe breakage and oil leakage when pulled, posing a significant safety hazard, and that while there are improved solutions such as breakage valves, these solutions have limitations such as difficulty in controlling the threshold, high cost, and difficulty in widespread adoption, this application provides a mechanical self-resetting mechanism for preventing breakage of fuel nozzles used in gas stations.

[0005] The technical solution provided in this application for a self-resetting mechanism to prevent breakage of a fuel nozzle at a gas station is as follows:

[0006] A self-resetting mechanism for preventing breakage of a fuel nozzle at a gas station includes:

[0007] A fuel nozzle, wherein the tail end of the fuel nozzle is connected to an oil inlet pipe, and the tail end of the oil inlet pipe is connected to an oil guide pipe connector;

[0008] A docking locking mechanism is provided between the oil inlet pipe and the oil guide pipe connector. The docking locking mechanism includes a support cylinder, an active cylinder, a plug pipe, a sliding cavity, a locking rod, an adjusting plate, a sliding groove, and a docking groove. The active cylinder is slidably connected to the axis of the support cylinder. The plug pipe is coaxially fixed to one end of the support cylinder and is inserted into the oil guide pipe connector. The sliding cavity is located inside the plug pipe, and one end of the active cylinder is slidably connected to the sliding cavity. The locking rod is slidably connected to the plug pipe radially. The oil guide pipe connector has a through hole, and the locking rod docks in the through hole. The docking groove is recessed on the locking rod near the sliding cavity. The adjusting plate is fixed to one end of the active cylinder and slidably engaged in the docking groove. A protrusion is provided in the docking groove. The sliding groove passes through the adjusting plate, and the protrusion is slidably engaged in the sliding groove.

[0009] The unlocking mechanism is used to separate the oil guide pipe connector from the insertion pipe. The unlocking mechanism includes an unlocking pipe, a tensioning oil pipe, a positioning rod, and a secondary locking hole. The unlocking pipe is slidably connected to the axis of the active cylinder, and one end is connected to the oil inlet pipe. The tensioning oil pipe is located between the other end of the unlocking pipe and the insertion pipe. The positioning rod is radially slidably engaged with the outer wall of the unlocking pipe, and a spring is provided between the unlocking pipe and the positioning rod. The secondary locking hole is provided through the outer wall of the support cylinder, and one end of the positioning rod is slidably engaged in the secondary locking hole.

[0010] By adopting the above technical solution, the sliding of the active cylinder drives the adjusting plate to slide synchronously within the sliding cavity. This, in turn, through the limiting action of the sliding groove, drives the locking rod's protrusion to move in tandem, allowing the locking rod to slide radially along the insertion pipe and align with the through hole on the oil guide pipe connector. This achieves a rapid locking effect between the oil guide pipe connector and the insertion pipe. Simultaneously, the unlocking mechanism, through the alignment of the positioning rod and the secondary locking hole, forms a primary locking structure. This, combined with the docking locking mechanism, forms a secondary locking structure. This allows the oil inlet pipe and oil guide pipe connector to respond in stages to different pulling forces. In the case of slight pulling, only primary separation is achieved, avoiding the possibility of separation caused by minor external forces during normal operation. Complete separation is necessary to ensure the continuity of the refueling process. When subjected to a large pulling force exceeding the first-level threshold, the unlocking mechanism can drive the docking and locking mechanism to achieve a second-level separation, effectively preventing the pipeline from being pulled apart, minimizing the risk of oil leakage, and improving the level of safety protection. The two-level separation design takes into account both the stability of daily use and the safety under sudden strong pulling. Combined with the mechanical self-resetting characteristics, it can quickly restore the function after the danger is eliminated, reducing manual maintenance costs and improving operational efficiency. It effectively solves the problem that existing refueling nozzles are prone to pipeline breakage and oil leakage when pulled, which poses a great safety hazard. Although there are improvement solutions such as break-off valves, they have limitations such as difficult threshold control, high cost, and difficulty in promotion.

[0011] Optionally, the docking locking mechanism further includes a leaf spring and a main locking hole. One end of the leaf spring is engaged with the outer wall of the driving cylinder, the main locking hole is located on the supporting cylinder and communicates with the internal cavity of the supporting cylinder, and the other end of the leaf spring is engaged with the main locking hole.

[0012] By adopting the above technical solution, the elasticity of the leaf spring is used to ensure that one end of it is firmly abutted against the main lock hole, thereby enabling the support cylinder and the driving cylinder to be firmly locked together and preventing them from separating during normal use.

[0013] Optionally, the unlocking mechanism further includes an unlocking frame and an abutment end. The unlocking frame is fixed on the leaf spring at one end near the main lock hole, and the abutment end is disposed on the unlocking tube and slidably engaged within the unlocking frame. The abutment end has an inclined structure.

[0014] By adopting the above technical solution, the inclined surface of the contact end slides against the unlocking frame, and then the unlocking frame drives one end of the leaf spring to deform, causing one end of the leaf spring to separate from the main lock hole, thereby achieving a quick unlocking and separation effect between the support cylinder and the active cylinder.

[0015] Optionally, a limiting ring is coaxially fixed on the outer wall of the active cylinder. Two limiting rings are symmetrically arranged and located on both sides of the supporting cylinder, respectively.

[0016] By adopting the above technical solution, the two ends of the active cylinder are limited by the limiting rings, thereby limiting the sliding distance of the active cylinder within the supporting cylinder.

[0017] Optionally, a return spring is sleeved on the outside of the active cylinder. One end of the return spring abuts against the end of the support cylinder near the oil guide pipe connector, and the other end abuts against the limiting ring.

[0018] By adopting the above technical solution, the spring force of the return spring is used to push the active cylinder, thereby enabling the active cylinder to slide quickly within the support cylinder and drive the adjustment plate to move in tandem, so that the locking rod and the oil guide pipe connector are separated.

[0019] Optionally, the tension tubing is made of a highly elastic material and has a corrugated tubular structure.

[0020] By adopting the above technical solution, the high-elasticity corrugated tubular structure is used to make the tensioned oil pipe have a certain elasticity, so that the oil inlet pipe can be quickly reset after slight displacement, and the positioning rod can be locked in the secondary locking hole.

[0021] Optionally, the slide is inclined, and the overall structure formed by the combination of the locking rod and the adjusting plate has at least two sets arranged symmetrically.

[0022] By adopting the above technical solution, the inclined slide groove is used so that when the slide groove is displaced, the locking rod can be moved quickly by the protrusion.

[0023] Optionally, a groove is recessed on the side wall of the active cylinder, and a locking block is provided at the end of the leaf spring away from the main locking hole. The leaf spring is detachably locked into the groove by the locking block.

[0024] By adopting the above technical solution and utilizing the detachable snap-fit ​​structure between the slot and the locking block, the leaf spring can be disassembled and replaced after its elasticity is lost or reduced to a certain value, thus avoiding the need to replace the entire mechanism.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The unlocking mechanism is designed to form a first-level limiting structure, which ensures that the oil inlet pipe only separates at the first level when it is slightly pulled. This avoids unnecessary complete separation caused by slight external forces during normal operation and ensures the continuity of the refueling process.

[0027] 2. When subjected to a large tensile force exceeding the first-level threshold, the unlocking mechanism drives the docking and locking mechanism to achieve a second-level separation, effectively preventing the pipeline from being pulled apart, minimizing the risk of oil leakage, and improving the level of safety protection. The two-level separation design takes into account both the stability of daily use and the safety during sudden strong pulling. In addition, combined with the mechanical self-resetting characteristics, it can quickly restore the function after the danger is eliminated, reducing manual maintenance costs and improving operational efficiency.

[0028] 3. By utilizing the spring-loaded tension oil pipe, the oil inlet pipe can be quickly reset when slightly pulled, thanks to the elasticity of the tension oil pipe. This allows the positioning rod to quickly reconnect with the secondary locking hole, achieving a self-resetting function. This effectively solves the problems of existing fuel nozzles, which are prone to pipe breakage and oil leakage when pulled, posing a significant safety hazard. Although there are improvement solutions such as break-off valves, they have limitations such as difficulty in controlling the threshold, high cost, and difficulty in promotion. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the external structure of a self-resetting mechanical mechanism for preventing breakage of a fuel nozzle used in a gas station, as described in this embodiment.

[0030] Figure 2 This is a schematic diagram of the support cylinder and its overall connection structure in this embodiment.

[0031] Figure 3 This is a schematic diagram of the connection structure of the unlocking mechanism in this embodiment.

[0032] Figure 4 This is a schematic diagram of the docking and locking mechanism in this embodiment.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Fuel nozzle; 2. Oil inlet pipe; 3. Oil guide pipe connector; 4. Docking and locking mechanism; 41. Support cylinder; 42. Active cylinder; 43. Insert pipe; 44. Sliding cavity; 45. Locking rod; 46. Adjusting plate; 47. Slide groove; 48. Docking groove; 49. Leaf spring; 410. Main locking hole; 411. Limiting ring; 412. Return spring; 5. Unlocking mechanism; 51. Unlocking pipe; 52. Tensioning oil pipe; 53. Positioning rod; 54. Secondary locking hole; 55. Unlocking frame; 56. Abutment end. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This application discloses a mechanical self-resetting mechanism for preventing the fuel nozzle from breaking at a gas station.

[0037] It should be noted that in the description of this utility model, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Reference Figure 1 and Figure 2A self-resetting mechanical mechanism for preventing breakage of a fuel nozzle at a gas station includes a fuel nozzle 1, an inlet pipe 2, an oil guide pipe connector 3, a docking locking mechanism 4, and an unlocking mechanism 5. The fuel nozzle 1 is connected to the inlet pipe 2 at its tail end, and the inlet pipe 2 is connected to the oil guide pipe connector 3 at its tail end. The docking locking mechanism 4 is located between the inlet pipe 2 and the oil guide pipe connector 3, and includes a support cylinder 41, an active cylinder 42, an insertion pipe 43, a sliding cavity 44, a locking rod 45, an adjusting plate 46, a sliding groove 47, and a docking groove 48, used for... The unlocking mechanism 5, which separates the oil guide pipe connector 3 from the insertion pipe 43, includes an unlocking pipe 51, a tensioning oil pipe 52, a positioning rod 53, and a secondary locking hole 54. The sliding of the active cylinder 42 drives the adjusting plate 46 to slide synchronously within the sliding cavity 44. This, in turn, is limited by the sliding groove 47, causing the protrusion of the locking rod 45 to move in tandem. This allows the locking rod 45 to slide radially along the insertion pipe 43 and align with the through hole on the oil guide pipe connector 3, achieving a rapid locking effect between the oil guide pipe connector 3 and the insertion pipe 43. By utilizing the unlocking mechanism 5, a primary locking structure is formed by connecting the positioning rod 53 and the secondary locking hole 54. This, in conjunction with the docking locking mechanism 4, forms a secondary locking structure. This allows the oil inlet pipe 2 and the oil guide pipe connector 3 to respond in stages to different pulling forces. In the case of slight pulling, only primary separation is achieved, avoiding unnecessary complete separation caused by minor external forces during normal operation and ensuring the continuity of the refueling process. When subjected to a larger pulling force than the primary threshold, the unlocking mechanism 5 can drive the docking locking mechanism 4 to achieve secondary separation, effectively preventing the pipeline from being pulled apart, minimizing the risk of oil leakage, and improving the level of safety protection. The two-stage separation design takes into account both the stability of daily use and the safety during sudden strong pulling. Combined with the mechanical self-resetting characteristics, it can quickly restore function after the danger is eliminated, reducing manual maintenance costs and improving operational efficiency. This effectively solves the problem that existing refueling nozzles are prone to pipeline breakage and oil leakage when pulled, posing a significant safety hazard. Although there are improvement solutions such as breakage valves, they have limitations such as difficult threshold control, high cost, and difficulty in promotion.

[0039] Specifically, the active cylinder 42 is slidably connected to the axis of the support cylinder 41, the insertion pipe 43 is coaxially fixed to one end of the support cylinder 41, and the insertion pipe 43 is inserted into the oil guide pipe connector 3. The sliding cavity 44 is set in the insertion pipe 43, and one end of the active cylinder 42 is slidably connected in the sliding cavity 44. The locking rod 45 is slidably connected to the insertion pipe 43 radially. The oil guide pipe connector 3 is provided with a through hole, and the locking rod 45 is mated in the through hole. The mating groove 48 is recessed on the locking rod 45 near the end of the sliding cavity 44. The adjusting plate 46 is fixed to one end of the active cylinder 42 and slidably engaged in the mating groove 48. The mating groove 48 is provided with a protrusion, and the sliding groove 47 is provided through the adjusting plate 46, and the protrusion is slidably engaged in the sliding groove 47.

[0040] In this embodiment of the application, regarding the unlocking mechanism 5, the unlocking tube 51 is slidably connected to the axis of the active cylinder 42, and one end is connected to the oil inlet pipe 2. The tension oil pipe 52 is disposed between the other end of the unlocking tube 51 and the insertion pipe 43. The positioning rod 53 is radially slidably engaged with the outer wall of the unlocking tube 51, and a spring is disposed between the unlocking tube 51 and the positioning rod 53. The secondary locking hole 54 is disposed through the outer wall of the support cylinder 41, and one end of the positioning rod 53 is slidably engaged with the secondary locking hole 54.

[0041] Reference Figure 3 Specifically, in this embodiment of the application, the docking locking mechanism 4 further includes a leaf spring 49 and a main lock hole 410. The spring force of the leaf spring 49 is used to ensure that one end of it can be firmly abutted in the main lock hole 410, thereby enabling the support cylinder 41 and the active cylinder 42 to be firmly locked together and prevent separation during normal use.

[0042] One end of the leaf spring 49 is engaged with the outer wall of the drive cylinder 42. The main locking hole 410 is set on the support cylinder 41 and communicates with the internal cavity of the support cylinder 41. The other end of the leaf spring 49 is engaged with the main locking hole 410.

[0043] In this embodiment, the unlocking mechanism 5 further includes an unlocking frame 55 and an abutment end 56. The unlocking frame 55 is fixed on the leaf spring 49 at one end near the main lock hole 410. The abutment end 56 is disposed on the unlocking tube 51 and is slidably engaged in the unlocking frame 55. The abutment end 56 has an inclined structure. The inclined surface of the abutment end 56 slides against the unlocking frame 55, thereby causing one end of the leaf spring 49 to deform through the unlocking frame 55, so that one end of the leaf spring 49 is separated from the main lock hole 410, thereby achieving a quick unlocking and separation effect between the support cylinder 41 and the active cylinder 42.

[0044] Specifically, a limiting ring 411 is coaxially fixed on the outer wall of the active cylinder 42. Two limiting rings 411 are symmetrically arranged and located on both sides of the supporting cylinder 41. The limiting rings 411 are used to limit the two ends of the active cylinder 42, thereby limiting the sliding distance of the active cylinder 42 within the supporting cylinder 41.

[0045] In this embodiment, a return spring 412 is sleeved on the outside of the active cylinder 42. One end of the return spring 412 abuts against the end of the support cylinder 41 near the oil guide pipe connector 3, and the other end abuts against the limiting ring 411. The spring force of the return spring 412 pushes the active cylinder 42, thereby enabling the active cylinder 42 to slide quickly within the support cylinder 41 and drive the adjusting plate 46 to move in tandem, so that the locking rod 45 separates from the oil guide pipe connector 3.

[0046] The tensioning oil pipe 52 is made of a highly elastic material and has a corrugated structure. The highly elastic corrugated structure gives the tensioning oil pipe 52 a certain degree of elasticity, so that the oil inlet pipe 2 can quickly return to its original position after slight displacement, and the positioning rod 53 can be locked in the secondary locking hole 54.

[0047] Reference Figure 4 In this embodiment of the application, regarding the slide groove 47, the slide groove 47 is inclined, and the overall structure composed of the locking rod 45 and the adjusting plate 46 is arranged in at least two sets in a symmetrical manner. By using the inclined slide groove 47, the locking rod 45 can be quickly slid by the protrusion when the slide groove 47 is displaced.

[0048] Specifically, a groove is recessed on the side wall of the active cylinder 42, and a locking block is provided at the end of the leaf spring 49 away from the main lock hole 410. The leaf spring 49 is detachably locked in the groove by the locking block. By utilizing the detachable locking structure between the groove and the locking block, the leaf spring 49 can be disassembled and replaced after its elasticity is lost or reduced to a certain value, thus avoiding the need to replace the entire mechanism.

[0049] The implementation principle of the anti-breakage mechanical self-resetting mechanism for a gas station fuel nozzle in this application embodiment is as follows: First, the oil guide pipe connector 3 is inserted into the connector 43, and then the active cylinder 42 is pushed to slide. At this time, the leaf spring 49 moves until one end of it is locked in the main locking hole 410. During the sliding process of the active cylinder 42, the adjusting plate 46 is moved synchronously. The locking rod 45 is driven to move through the sliding groove 47, so that the locking rod 45 is locked in place with the through hole on the oil guide pipe connector 3. At this time, the positioning rod 53 on the unlocking pipe 51 is locked in the secondary locking hole 54.

[0050] When the oil inlet pipe 2 is slightly pulled, the oil inlet pipe 2 drives the unlocking pipe 51 to slide, causing the positioning rod 53 to separate from the secondary lock hole 54. At this time, the stretching oil pipe 52 deforms. When the tension continues to increase, the abutting end 56 slides against the unlocking frame 55, and pushes the unlocking frame 55 and the leaf spring 49 to work together, causing one end of the leaf spring 49 to separate from the main lock hole 410. At this time, the active cylinder 42 is reset under the elastic force of the return spring 412, and drives the adjusting plate 46 to slide in the opposite direction, causing the locking rod 45 to separate from the oil guide pipe connector 3, thereby achieving the separation effect between the oil inlet pipe 2 and the oil guide pipe connector 3.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-resetting mechanical mechanism for preventing breakage of a fuel nozzle used in gas stations, characterized in that, include: A fuel nozzle (1) is connected to an oil inlet pipe (2) at its tail end, and an oil guide pipe connector (3) is connected to the tail end of the oil inlet pipe (2). A docking locking mechanism (4) is provided between the oil inlet pipe (2) and the oil guide pipe connector (3), and the docking locking mechanism (4) includes a support cylinder (41), an active cylinder (42), an insertion pipe (43), a sliding cavity (44), a locking rod (45), an adjusting plate (46), a sliding groove (47), and a docking groove (48). The active cylinder (42) is slidably connected to the axis of the support cylinder (41), and the insertion pipe (43) is coaxially fixed to one end of the support cylinder (41), and the insertion pipe (43) is inserted into the oil guide pipe connector. Inside the connector (3), the sliding cavity (44) is set inside the insertion tube (43), and one end of the active cylinder (42) is slidably connected inside the sliding cavity (44). The locking rod (45) is slidably connected to the insertion tube (43) radially. The oil guide pipe connector (3) is provided with a through hole. The locking rod (45) is mated inside the through hole. The mating groove (48) is recessed on the locking rod (45) near the end of the sliding cavity (44). The adjusting plate (46) is fixed to one end of the active cylinder (42) and slidably engaged in the mating groove (48). A protrusion is provided inside the mating groove (48). The sliding groove (47) is provided through the adjusting plate (46), and the protrusion is slidably engaged in the sliding groove (47). The unlocking mechanism (5) is used to separate the oil guide pipe connector (3) from the insertion pipe (43). The unlocking mechanism (5) includes an unlocking pipe (51), a tensioning oil pipe (52), a positioning rod (53), and a secondary locking hole (54). The unlocking pipe (51) is slidably connected to the axis of the active cylinder (42), and one end is connected to the oil inlet pipe (2). The tensioning oil pipe (52) is located between the other end of the unlocking pipe (51) and the insertion pipe (43). The positioning rod (53) is slidably engaged in the outer wall of the unlocking pipe (51) in the radial direction, and a spring is provided between the unlocking pipe (51) and the positioning rod (53). The secondary locking hole (54) is provided through the outer wall of the support cylinder (41), and one end of the positioning rod (53) is slidably engaged in the secondary locking hole (54).

2. The self-resetting mechanism for preventing breakage of a fuel nozzle at a gas station according to claim 1, characterized in that, The docking locking mechanism (4) also includes a leaf spring (49) and a main locking hole (410). One end of the leaf spring (49) is engaged on the outer wall of the active cylinder (42). The main locking hole (410) is set on the support cylinder (41) and communicates with the internal cavity of the support cylinder (41). The other end of the leaf spring (49) is engaged in the main locking hole (410).

3. The self-resetting mechanism for preventing breakage of a fuel nozzle at a gas station according to claim 2, characterized in that, The unlocking mechanism (5) further includes an unlocking frame (55) and an abutment end (56). The unlocking frame (55) is fixed on the leaf spring (49) at one end near the main lock hole (410). The abutment end (56) is set on the unlocking tube (51) and is slidably engaged in the unlocking frame (55). The abutment end (56) has an inclined structure.

4. The anti-breakage mechanical self-resetting mechanism for a gas station fuel nozzle according to claim 1, characterized in that, A limiting ring (411) is coaxially fixed on the outer wall of the active cylinder (42). Two limiting rings (411) are symmetrically arranged and located on both sides of the supporting cylinder (41).

5. A self-resetting mechanism for preventing breakage of a fuel nozzle at a gas station according to claim 4, characterized in that, The active cylinder (42) is fitted with a return spring (412). One end of the return spring (412) abuts against one end of the support cylinder (41) near the oil guide pipe connector (3), and the other end abuts against the limiting ring (411).

6. The anti-breakage mechanical self-resetting mechanism for a gas station fuel nozzle according to claim 1, characterized in that, The tensioned oil pipe (52) is made of a highly elastic material and has a corrugated pipe structure.

7. The self-resetting mechanism for preventing breakage of a fuel nozzle at a gas station according to claim 1, characterized in that, The slide (47) is inclined, and the overall structure formed by the combination of the locking rod (45) and the adjusting plate (46) is arranged in at least two sets in a symmetrical manner.

8. A self-resetting mechanism for preventing breakage of a fuel nozzle at a gas station according to claim 2, characterized in that, The active cylinder (42) has a recessed groove on its side wall, and the leaf spring (49) has a locking block at the end away from the main lock hole (410). The leaf spring (49) is detachably locked in the groove by the locking block.

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