A refueling gun lock mechanism, a refueling gun and a refueling method thereof

Abstract

The application discloses a gun locking mechanism of a filling gun, the filling gun and a filling method of the filling gun. The gun locking mechanism comprises a switch device provided with a locking gear, and the locking gear is provided with a gun locking gap. The gun locking mechanism is further provided with a locking device provided with a locking pin capable of moving linearly and reciprocally, and the locking pin is capable of being inserted into the gun locking gap. The filling method comprises the following steps: S1, a gas filling gun head is communicated with a gun seat; S2, an outer sliding sleeve is slid from a first position to a second position, and the locking pin is popped out of the gun locking gap; S3, a driving element of the locking device is used to control a gas inlet main valve core to move to a gas filling position, and the filling is started; S4, when the filling is finished, the driving element of the locking device is used to control the gas inlet main valve core to move to a locking exhaust position, and the filling is finished; and S5, the outer sliding sleeve is slid from the second position to the first position, and the outer sliding sleeve forces the locking pin to be inserted into the gun locking gap. The application can effectively prevent an operator from forgetting to lock the filling gun or from locking the filling gun out of position, avoid the filling gun from being broken due to high pressure, and ensure the safety of the operator.

Description

Technical Field

[0001] This invention belongs to the technical field of refueling devices, specifically relating to a refueling gun locking mechanism, a refueling gun, and a refueling method thereof. Background Technology

[0002] Due to the advantages of compressed gas fuels, such as high safety, low price, complete combustion, and low environmental pollution, transportation using gases such as hydrogen and compressed natural gas as fuels has developed rapidly in recent years. In practical applications, fuel is often stored and refueled under high pressure. Cars are generally refueled using a refueling nozzle. Before refueling, the nozzle needs to be connected to the car and locked. However, due to operator errors or carelessness, operators often forget to lock the nozzle or fail to lock it properly, causing the nozzle to detach under high pressure, posing a significant safety hazard. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a dispensing gun locking mechanism, a dispensing gun, and a dispensing method thereof, which can effectively prevent operators from forgetting to lock the dispensing gun or from failing to lock it properly, avoid the dispensing gun from dislodging due to high pressure, and ensure the safety of operators.

[0004] The embodiments of the present invention are achieved through the following technical solutions:

[0005] A refueling gun locking mechanism, comprising,

[0006] A switching device that drives the intake main valve core to move to the gas filling position or lock the exhaust position, the switching device being provided with a locking gear having a gun locking notch;

[0007] The locking device is equipped with a locking pin that can move linearly back and forth, and when the intake main valve core is in the locked exhaust position, the locking pin can be inserted into the locking gun notch.

[0008] In one embodiment of the present invention, the locking device further includes a guide tube and a locking spring. The guide tube is connected to the locking device, the locking pin passes through the guide tube, and the locking pin is also provided with a retaining spring ring.

[0009] The locking spring is sleeved on the locking pin, with one end of the locking spring abutting against the locking device and the other end of the locking spring abutting against the retaining spring ring.

[0010] In one embodiment of the present invention, the locking device further includes a driving member, a drive gear, and a transmission gear. The drive gear is located on the shaft connecting the driving member and the main valve core, and the transmission gear meshes with the drive gear.

[0011] A refueling gun includes a gun body with an air inlet main valve core and a refueling nozzle communicating with a gun base. The refueling nozzle is provided with an outer sliding sleeve. The refueling gun also includes the aforementioned refueling gun locking mechanism.

[0012] When the refueling gun is in its initial state, the outer sliding sleeve is in the first position, and the outer sliding sleeve forces the locking pin into the gun locking notch.

[0013] When the refueling gun is in the refueling state, the outer sliding sleeve slides to the second position, and the locking pin pops out of the gun locking notch.

[0014] In one embodiment of the present invention, the outer sliding sleeve is provided with an L-shaped sliding groove, and the gas gun head is provided with a locking pin located in the L-shaped sliding groove.

[0015] A method for filling a refueling gun, used with the refueling gun described in the preceding claims, the method comprising the following steps:

[0016] S1. The gas nozzle head is connected to the nozzle base;

[0017] S2. The outer sliding sleeve slides from the first position to the second position, and the locking pin pops out of the gun locking notch;

[0018] S3. The main intake valve core is moved to the filling position by the drive component of the locking device to start filling;

[0019] S4. When the filling is finished, the main intake valve core is moved to the locked exhaust position by the drive component of the locking device to end the filling;

[0020] S5. Slide the outer sliding sleeve from the second position to the first position. The outer sliding sleeve forces the locking pin to be inserted into the locking gun notch, thus completing the locking mechanism.

[0021] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0022] This invention locks the dispensing gun using a locking pin and a locking gear with a locking notch. The operator can only unlock the dispensing gun when the dispensing gun is connected to the gun holder and the outer sliding sleeve that abuts against the locking pin slides to the second position. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the filling gun of the present invention;

[0025] Figure 2 This is a schematic diagram of the locking structure of the filling gun of the present invention when it is in a ready-to-use state;

[0026] Figure 3 This is a schematic diagram of the gun locking structure when the filling gun and the gun base of the present invention are connected;

[0027] Figure 4 This is a schematic diagram of the locking structure of the filling gun when it is in the gas filling state.

[0028] Figure 5 This is a schematic diagram of the spare locking gun structure of the filling gun of the present invention;

[0029] Figure 6 for Figure 5 A magnified schematic diagram of part A in the middle.

[0030] Icons: 1-Gun body, 2-Gas nozzle, 21-Outer slide, 3-Gun base, 41-Handle, 42-Support shell, 43-Drive gear, 44-Transmission gear, 45-Locking gear, 46-Locking notch, 51-Guide tube, 52-Locking spring, 53-Locking pin, 61-L-shaped groove, 611-First groove, 612-First groove, 62-Locking pin. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this invention, it should be noted that if terms such as "inner" or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention.

[0035] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "configure," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example

[0037] Please refer to Figure 1 The filling gun involved in this embodiment is prior art, such as the applicant's patent application 1 entitled "A gas adding device and a gas filling device" with publication number CN109099308A, and the prior application 2 entitled "Hydrogen filling gun head assembly and hydrogen filling gun" with publication number CN214948202U. This application is an optimization and improvement based on the prior art.

[0038] Specifically, the refueling gun involved in this embodiment includes a gun body 1 with an inlet main valve core and a refueling nozzle 2 connected to a gun base 3. The gun body 1 is connected to a gas storage device via a pipe, and the gun body 1 is equipped with a driving component for driving the inlet main valve core to move to the refueling position or the venting position. The driving component can be a handle 41, a rotary wheel, or a motor, etc. In this embodiment, the driving component is a handle 41, which is connected to a toothed transmission shaft. The transmission shaft is connected to the inlet main valve core inside the gun body 1 through tooth meshing. When the handle 41 is rotated, the handle 41 drives the main valve core to move through the transmission shaft, realizing the switching of the refueling gun between the refueling state and the venting state. The refueling nozzle 2 is equipped with an outer sliding sleeve 21, which has two working positions. Please refer to... Figure 2 When the filling gun is in standby mode, the outer sleeve 21 is in the first position. Please refer to [the relevant documentation]. Figure 3 When preparing to refuel, when connecting the gas nozzle 2 to the nozzle base 3, the outer sliding sleeve 21 is slid to the second position, at which time the gas nozzle 2 and the nozzle base 3 are locked. It should be noted that the specific structure of the gas nozzle 2 is described in prior application 2 (publication number CN214948202U), and this application does not make any improvements to the internal structure of the gas nozzle 2.

[0039] To address the issue of operators easily forgetting to lock the dispensing gun or failing to lock it properly, leading to the gun breaking off due to high pressure, this embodiment includes a switching device comprising a support housing 42, a drive gear, a transmission gear, and a locking gear. The support housing 42 is fixed to the gun body 1. The drive gear is installed inside the support housing 42 and fixed to the transmission shaft. The transmission gear is also installed inside the support housing 42 and meshes with the drive gear. Furthermore, the transmission gear meshes with the locking gear, which has a locking notch. When the handle 41 is rotated, the handle 41 drives the transmission shaft to rotate, the transmission shaft drives the transmission gear to rotate, the transmission gear then drives the drive gear to rotate, and the drive gear then drives the locking gear to rotate.

[0040] This embodiment also includes a locking device comprising a guide tube, a locking spring, and a locking pin capable of linear reciprocating movement. The guide tube is mounted on the bracket housing 42, and the locking pin is installed inside the guide tube. The locking pin has a retaining spring ring, and a locking spring is fitted onto the locking pin. One end of the locking spring abuts against the bracket housing 42 of the locking device, and the other end of the locking spring abuts against the retaining spring ring. The locking spring maintains the locking pin's tendency to pop out of the guide tube. To prevent the locking pin from popping out and detaching from the guide tube, a stop inner ring corresponding to the retaining spring ring is provided inside the guide tube.

[0041] Please refer to Figure 2 When the refill gun is in the ready-to-use state, the outer sliding sleeve 21 is in the first position. The outer sliding sleeve 21 forces the locking pin to retract into the guide tube and compress the locking spring. Moreover, the locking pin is inserted into the locking notch of the locking gear. At this time, the refill gun is in the safe state of locking. Even if someone wants to turn the handle 41, they will not be able to turn the handle 41 due to the locking action between the locking pin and the locking notch.

[0042] Please refer to Figure 3-4 When preparing to refuel, connect the refueling nozzle 2 to the nozzle holder 3, slide the outer sliding sleeve 21 to the second position. At this time, the refueling nozzle 2 and the nozzle holder 3 are locked. The locking pin extends out of the guide tube under the action of the locking spring, and one end of the locking pin is completely away from the locking nozzle notch. The locking gear is unlocked. Turn the handle 41 to move the main air inlet valve core to the refueling position, and the refueling gun enters the refueling state. If the operator does not slide the outer sliding sleeve 21 completely to the second position, that is, the outer sliding sleeve 21 is only slid between the first and second positions, the locking pin will not be completely away from the locking nozzle notch. The locking pin and the locking gear will still be locked. In this state, the handle 41 still cannot be turned. In this way, even if the refueling gun and the nozzle holder 3 are falsely locked, it can ensure that the operator cannot turn the handle 41 normally to start refueling, ensuring the safety of the operator. It also reminds the operator to further check whether the refueling gun and the nozzle holder 3 are locked in place.

[0043] When the refueling is finished, the operator first pulls the handle 41 to move the main air valve core to the locked exhaust state, and the refueling gun enters the locked exhaust state, cutting off the passage between the refueling gun and the gun holder 3. Then, the outer sliding sleeve 21 is slid from the second position to the first position. During this process, the outer sliding sleeve 21 forces the locking pin to retract into the guide tube and compress the locking spring. Moreover, the locking pin is inserted into the locking notch of the locking gear, thereby locking the refueling gun.

[0044] Please refer to Figure 5-6 This embodiment also adds a backup gun locking mechanism. When the aforementioned gun locking mechanism fails, the operator can still use the backup gun locking mechanism. Of course, both gun locking mechanisms can be used simultaneously. The backup gun locking mechanism includes an L-shaped groove on the outer sliding sleeve 21 and a locking pin located in the L-shaped groove. The locking pin can be a cylinder or a bolt and is installed on the gas nozzle head 2. In this embodiment, a bolt is used as the locking pin. When the filling gun is in the standby state, the outer sliding sleeve 21 is in the first position. At this time, the locking pin is located at the bottom of the first groove of the L-shaped groove. Due to the restraining effect between the locking pin and the first groove, the outer sliding sleeve 21 cannot rotate.

[0045] When preparing to refuel, when the gas nozzle 2 is connected to the nozzle base 3, the outer sliding sleeve 21 moves from the first position to the second position. At this time, the locking pin is located in the second groove. Rotating the outer sliding sleeve 21 makes the locking pin located at the bottom of the second groove of the L-shaped groove. The locking pin and the L-shaped groove lock the outer sliding sleeve 21. The operation of rotating the outer sliding sleeve 21 also reminds the operator that the outer sliding sleeve 21 can only be rotated when it has moved to the second position. Only then is the connection between the refueling gun and the nozzle base 3 in place.

[0046] It should be noted that the gun holder 3 refers to the structure that connects the gas filler neck to the filling gun.

[0047] A refueling method using a refueling gun, comprising the following steps:

[0048] S1. Connect the gas nozzle head 2 and the nozzle base 3;

[0049] S2. After the gas nozzle 2 is connected to the nozzle base 3, the outer sliding sleeve 21 slides from the first position to the second position, and the locking pin pops out of the locking notch under the action of the locking spring, thereby unlocking the locking gear;

[0050] S3. Use handle 41 to move the main intake valve core to the filling position to start filling;

[0051] S4. When the filling is finished, use handle 41 to move the main intake valve core to the locked exhaust position to end the filling;

[0052] S5. Slide the outer sliding sleeve 21 from the second position to the first position. The outer sliding sleeve 21 forces the locking pin to be inserted into the locking gun notch, thus completing the locking mechanism.

[0053] The present invention locks the dispensing gun by means of a locking pin and a locking gear with a locking notch. The operator can only unlock the dispensing gun when the dispensing gun is connected to the gun holder 3 and the outer sliding sleeve 21 that abuts against the locking pin slides to the second position.

[0054] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A filling gun comprising a gun body provided with an inlet main valve spool and a gas filling gun head communicating with a gun seat, said gun body communicating with a pipe and a gas storage device, characterized in that, The gas filling gun head is provided with an outer sleeve, and the gas filling gun further comprises a gas filling gun locking mechanism, The gas filling gun locking mechanism comprises a switch device which drives the main air inlet valve core to move to a gas filling position or a locking exhaust position, the switch device is provided with a locking gear which has a gun locking gap; and a locking device which is provided with a locking pin which can move linearly and reciprocally, and the locking pin can be inserted into the gun locking gap when the main air inlet valve core is located at the locking exhaust position; When the gas filling gun is in an initial state, the outer sleeve is located at a first position, and the outer sleeve forces the locking pin to be inserted into the gun locking gap, When the gas filling gun is in a gas filling state, the outer sleeve is slid to a second position, and the locking pin is popped out of the gun locking gap.

2. The gas filling gun according to claim 1, characterized in that The locking device further comprises a guide tube and a locking compression spring, the guide tube is connected with the locking device, the locking pin penetrates through the guide tube, and the locking pin is further provided with a spring blocking ring, The locking compression spring is sleeved on the locking pin, one end of the locking compression spring abuts against the locking device, and the other end of the locking compression spring abuts against the spring blocking ring.

3. The fill gun of claim 1, wherein, The locking device further comprises a driving member, a driving gear and a transmission gear, the driving gear is arranged on a shaft which is connected with the main valve core, and the transmission gear is engaged with the driving gear.

4. The filler neck of any of claims 1-3, wherein, The outer sleeve is provided with an L-shaped sliding groove, and the gas filling gun head is provided with a locking column which is located in the L-shaped sliding groove.

5. A method of refilling a refilling gun, characterized in that The gas filling method for the gas filling gun according to any one of claims 1-3 comprises the following steps: S1. The gas filling gun head is communicated with the gun seat; S2. The outer sleeve is slid from the first position to the second position, and the locking pin is popped out of the gun locking gap; S3. The main air inlet valve core is controlled by the driving member of the locking device to move to the gas filling position, and the gas filling is started; S4. When the gas filling is completed, the main air inlet valve core is controlled by the driving member of the locking device to move to the locking exhaust position, and the gas filling is ended; S5. The outer sleeve is slid from the second position to the first position, and the outer sleeve forces the locking pin to be inserted into the gun locking gap, and the locking mechanism is locked.

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