Hydrogen gun head with dog lock structure

Abstract

The application discloses a hydrogenation gun head with a claw locking structure, which comprises a filling gun head, a pull handle seat, a handle fixing seat, a pull handle spring, a gun locking fastener, a pin shaft, a self-locking spring and a claw, the pull handle seat is sleeved on the front part of the filling gun head, the handle fixing seat is arranged on the rear part of the filling gun head, the pull handle spring is sleeved between the outer wall of the filling gun head and the inner wall of the pull handle seat, and the bottom of the pull handle spring is in contact with the shaft shoulder on the filling gun head; the front part of the gun locking fastener is connected with the pull handle seat through the pin shaft, and the middle part of the gun locking fastener is connected with the pull handle seat through the self-locking spring, and the front part of the gun locking fastener is provided with a protrusion; the claw is arranged on the end part of the filling gun head; after the filling gun head is inserted into the pipeline to be filled, under the action of the rear force of the pull handle spring, the shaft shoulder on the filling gun head extrudes the pull handle seat, the self-locking spring connected with the pull handle seat is pushed outwards, the protrusion of the front part of the gun locking fastener is pushed against the end face of the handle fixing seat, so that the pull handle seat and the claw are limited. The hydrogenation gun can be automatically locked after the hydrogenation gun is inserted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline connection, in particular to a hydrogen filling gun head with a clamping jaw locking structure. BACKGROUND

[0002] With the increasing demand for hydrogen fuel cell vehicles and corresponding hydrogen filling stations, the hydrogen filling gun has become an increasingly indispensable part of the industry. Hydrogen filling stations mainly store hydrogen in high-pressure gaseous and low-temperature liquid forms. At present, high-pressure hydrogen storage technology is mature, so in terms of refueling, high-pressure hydrogen is mainly used for refueling. High-pressure hydrogen filling guns have extremely high flow rates when working, which can easily cause damage to the internal components of the hydrogen filling gun. In addition, the heat generated by the high flow rate can cause some structural deformation and heat conduction. Furthermore, due to the diversity of functions, the structure of the hydrogen filling gun is inevitably complex. The structure of the hydrogen filling gun includes functions such as switch control, blowing, recovery detection, and full-filling automatic shutdown, so the structure is relatively complex and has a very high integration level.

[0003] Under high-pressure and ultra-high-pressure conditions, the pressure of the gas on the sealing structure is high. Under the same gap conditions, the leakage amount is several times or even dozens of times larger than that under normal pressure. Moreover, for flammable gases such as hydrogen, excessive leakage can have very serious consequences.

[0004] Among the market products of hydrogen filling guns that have been mass-produced, only the WEH hydrogen filling gun has an automatic gun locking mechanism. Other products do not have such a structure and are in the form of quick insertion, for example:

[0005] Chinese utility model patent CN214306478U discloses a fuel cell vehicle safety self-locking quick plug-in high-pressure hydrogen filling gun, which relates to the technical field of hydrogen filling guns and comprises a hydrogen filling gun body, the hydrogen filling gun body includes an upper valve body, a lower valve body and a valve seat, the upper valve body is provided with a conical hole, the conical hole is provided with a ball, and the lower valve body is provided with a circular hole; a quick plug connector assembly, the quick plug connector assembly includes a thimble, a thimble sleeve, a thimble spring and a thimble shaft sleeve; a sleeve assembly, the sleeve assembly includes a front end protective shell and a shell support spring, the shell support spring is arranged between the upper valve body and the front end protective shell, and the inner wall of the front end protective shell is provided with a limiting groove; a filter assembly; a safety locking assembly, the safety locking assembly is arranged in the circular hole, and the safety locking assembly includes a safety locking spring, a safety tightening nut and a safety locking pin.

[0006] Chinese utility model patent CN216643806U discloses a bias grip type hydrogen filling gun, which comprises a gun head and a gun body. The gun head is sleeved on one end of the gun body and is used for connecting with a gas filling seat for gas filling. A valve core is arranged in the gun body. A gas filling handle assembly is arranged on the gun body. The gas filling handle assembly drives the valve core to move relative to the gun body to enter and exhaust air. The bias grip type hydrogen filling gun is rotated by an external handle to drive the internal valve core to move, thereby completing the process of air intake and exhaust, and is suitable for quick hydrogen filling.

[0007] However, the current relevant hydrogenation gun products have occurred lock gun not in place, resulting in the collapse of the gun during refueling process, so the problem needs to be solved. SUMMARY

[0008] In order to solve the above problems, the application provides a hydrogenation gun head with a claw locking structure, which can quickly lock the gun after inserting the hydrogenation gun and effectively avoid the collapse of the gun during refueling.

[0009] The technical scheme adopted by the application is as follows:

[0010] A hydrogenation gun head with a claw locking structure, comprising a refueling gun head, a pull handle seat, a handle fixing seat, a pull handle spring, a gun locking fastener, a pin shaft, a self-locking spring and a claw, the pull handle seat is sleeved on the front part of the refueling gun head, the handle fixing seat is arranged on the rear part of the refueling gun head, the pull handle spring is sleeved between the outer wall of the refueling gun head and the inner wall of the pull handle seat, and the bottom part is in contact with the shaft shoulder on the refueling gun head; the front part of the gun locking fastener is connected with the pull handle seat through the pin shaft, and the middle part is connected with the pull handle seat through the self-locking spring, the front part of the gun locking fastener is provided with a protrusion; the claw is arranged on the end part of the refueling gun head; after the refueling gun head is inserted into the injected pipeline, under the action of the rear force of the pull handle spring, the shaft shoulder on the refueling gun head extrudes the pull handle seat, the self-locking spring connected with the pull handle seat is pushed outward, the protrusion of the front part of the gun locking fastener is pushed against the end face of the handle fixing seat, thereby limiting the pull handle seat, and the pull handle seat limits and locks the claw.

[0011] Further, the tail part of the gun locking fastener is attached to the outer wall of the pull handle seat in the unlocked state.

[0012] Further, the tail part of the gun locking fastener is provided in a handle shape.

[0013] Further, the self-locking spring is arranged along the width direction of the refueling gun head.

[0014] Further, the end part of the refueling gun head is provided with a claw.

[0015] Further, the end part of the claw is provided with a protrusion, and when the claw is inserted into the injected pipeline, the protrusion of the claw limits the injected pipeline.

[0016] The application has the following advantages:

[0017] (1) When the hydrogen refueling nozzle with a pawl locking structure is inserted into the injection pipeline, the shoulder on the refueling nozzle presses against the handle seat under the backward force of the handle spring. The self-locking spring connected to the handle seat pushes outward, causing the protrusion at the front of the locking fastener to press against the end face of the handle fixing seat, thereby limiting the handle seat. The handle seat then limits and locks the pawl at the end of the refueling nozzle, thus achieving automatic locking of the hydrogen refueling nozzle.

[0018] (2) After the hydrogenation process is completed, press the tail of the locking gun fastener inward. The protrusion at the front of the locking gun fastener will be offset from the end face of the handle fixing seat. At this time, the locking gun fastener and the pull handle seat can be moved backward, which will open the claw at the end of the filling gun head, thereby achieving quick unlocking.

[0019] (3) The hydrogen refueling nozzle with a claw locking structure of the present invention can quickly lock the nozzle automatically after the hydrogen refueling nozzle is inserted, which can effectively prevent the nozzle from breaking during the refueling process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a hydrogen refueling nozzle with a claw locking structure according to an embodiment of the present invention.

[0021] Figure 2 This is one of the schematic diagrams of the locked state of a hydrogen refueling nozzle with a claw locking structure according to an embodiment of the present invention.

[0022] Figure 3 This is one of the schematic diagrams showing the unlocked state of a hydrogen refueling nozzle with a claw locking structure according to an embodiment of the present invention.

[0023] Figure 4 This is a perspective view of the locked state of a hydrogen refueling nozzle with a claw locking structure according to an embodiment of the present invention.

[0024] Figure 5 This is a perspective view of the unlocked state of a hydrogen refueling nozzle with a claw locking structure according to an embodiment of the present invention.

[0025] Figure 6 This is the second schematic diagram of the hydrogen refueling nozzle locking state with a pawl locking structure according to an embodiment of the present invention (pawl is locked).

[0026] Figure 7 This is a schematic diagram of the unlocked state of the hydrogen refueling nozzle with a claw locking structure according to an embodiment of the present invention. Figure 2 (Claw has been unlocked.)

[0027] Attached reference numerals: 1-filling nozzle head, 2-pull handle base, 3-handle fixing base, 4-pull handle spring, 5-locking fastener, 6-pin, 7-self-locking spring, 8-claw. Detailed Implementation

[0028] In order to make the technical features, objectives and effects of the present application more clearly understood, the specific embodiments of the present application are described. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application, that is, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] As shown in Figure 1 , a hydrogenation gun head with a claw locking structure comprises a filling gun head 1, a pull handle seat 2, a handle fixing seat 3, a pull handle spring 4, a gun locking buckle 5, a pin shaft 6, a self-locking spring 7 and a claw 8. The pull handle seat 2 is sleeved on the front part of the filling gun head 1, the handle fixing seat 3 is arranged on the rear part of the filling gun head 1, the pull handle spring 4 is sleeved between the outer wall of the filling gun head 1 and the inner wall of the pull handle seat 2, and the bottom part is in contact with the shaft shoulder on the filling gun head 1. The front part of the gun locking buckle 5 is connected with the pull handle seat 2 through the pin shaft 6, and the middle part is connected with the pull handle seat 2 through the self-locking spring 7, and the front part of the gun locking buckle 5 is provided with a protrusion. The end part of the filling gun head 1 is provided with the claw 8.

[0030] As shown in Figure 2 , Figure 4 and Figure 6 , after the filling gun head 1 is inserted into the injection pipeline, under the action of the pull handle spring 4 in the rear direction, the shaft shoulder on the filling gun head 1 extrudes the pull handle seat 2, the self-locking spring 7 connected with the pull handle seat 2 is pushed outward, the protrusion of the front part of the gun locking buckle 5 is pushed against the end face of the handle fixing seat 3, thereby limiting the pull handle seat 2, and the pull handle seat 2 limits and locks the claw 8 at the end part of the filling gun head 1, so that automatic gun locking of the hydrogenation gun can be realized.

[0031] As shown in Figure 3 , Figure 5 and Figure 7 , after the hydrogenation process is completed, the tail part of the gun locking buckle 5 is pressed inward, the protrusion of the front part of the gun locking buckle 5 is staggered with the end face of the handle fixing seat 3, at this time the gun locking buckle 5 and the pull handle seat 2 can retreat backward, so that the claw 8 at the end part of the filling gun head 1 can be opened, thereby realizing quick unlocking.

[0032] Preferably, as shown in Figure 4 and Figure 5 , a groove is arranged on the outer wall of the pull handle seat 2 in the length direction, and the gun locking buckle 5 is installed in the groove, the front part of the gun locking buckle 5 is connected with the two side walls of the groove through the pin shaft 6, and the middle part of the gun locking buckle 5 is connected with the bottom part of the groove through the self-locking spring 7. Among them, the gun locking buckle 5 is hiddenly arranged on the outer wall of the pull handle seat 2, which can realize integration, and can avoid the gun locking buckle 5 from being mistakenly touched or damaged due to the relatively prominent position.

[0033] Preferably, the tail of the lock gun buckle 5 is provided in a handle shape to facilitate pressing.

[0034] Preferably, as shown, the end of the pawl 8 is provided with a protrusion, and when the pawl 8 is inserted into the injected pipeline, the protrusion of the pawl 8 can limit the injected pipeline. Figure 1

[0035] In summary, the hydrogenation gun head with the pawl locking structure of the present application can quickly automatically lock the gun after the hydrogenation gun is inserted, and can effectively avoid the gun collapse during the refueling process. When the refueling gun head 1 is inserted into the injected pipeline, under the action of the rear force of the pull handle spring 4, the shaft shoulder on the refueling gun head 1 extrudes the pull handle seat 2, and the self-locking spring 7 connected with the pull handle seat 2 is pushed outward, so that the protrusion at the front of the lock gun buckle 5 abuts against the end face of the handle fixing seat 3, thereby limiting the pull handle seat 2, and the pull handle seat 2 limits and locks the pawl 8 at the end of the refueling gun head 1, so that the automatic locking of the hydrogenation gun is realized. After the hydrogenation process is completed, the tail of the lock gun buckle 5 is pressed inward, the protrusion at the front of the lock gun buckle 5 is disengaged from the end face of the handle fixing seat 3, at this time the lock gun buckle 5 and the pull handle seat 2 can retreat backward, so that the pawl 8 at the end of the refueling gun head 1 can be opened, thereby realizing quick unlocking.

[0036] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance.​

Claims

1. A hydrogenation gun tip having a dog-locking structure, characterized by, The injection gun comprises a gun head, a pull handle seat, a handle fixing seat, a pull handle spring, a gun locking fastener, a pin shaft, a self-locking spring and a claw, the pull handle seat is sleeved on the front part of the gun head, the handle fixing seat is arranged on the rear part of the gun head, the pull handle spring is sleeved between the outer wall of the gun head and the inner wall of the pull handle seat, and the bottom of the pull handle spring is in contact with the shaft shoulder on the gun head; the front part of the gun locking fastener is connected with the pull handle seat through the pin shaft, and the middle part of the gun locking fastener is connected with the pull handle seat through the self-locking spring, the front part of the gun locking fastener is provided with a protrusion; the claw is arranged on the end part of the gun head; when the gun head is inserted into the injected pipeline, under the action of the rear force of the pull handle spring, the shaft shoulder on the gun head extrudes the pull handle seat, the self-locking spring connected with the pull handle seat is pushed outward, the protrusion of the front part of the gun locking fastener is pushed against the end face of the handle fixing seat, so that the pull handle seat is limited, and the pull handle seat limits and locks the claw; the tail part of the gun locking fastener is attached to the outer wall of the pull handle seat in the state of unlocking the gun; the self-locking spring is arranged along the width direction of the gun head; the end part of the claw is provided with a protrusion, and when the claw is inserted into the injected pipeline, the protrusion of the claw limits the injected pipeline.

2. The hydrogenation gun head with a dog-claw locking structure according to claim 1, characterized in that, The tail part of the gun locking fastener is arranged in a handle shape.

3. The hydrogenation gun head with a dog-claw locking structure according to claim 1 or 2, characterized in that, The claw is provided with a plurality of claws.

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