A gas cylinder switching structure

Abstract

The application discloses a gas cylinder switching structure which can be used for replacing different specifications of gas cylinders on a gas gun. The gas cylinder switching structure comprises a gas cylinder connecting seat and an output head. A hollow structure of a thorn needle is arranged in the middle of the gas cylinder connecting seat in the axial direction. A gas cylinder interface is arranged at one end of the gas cylinder connecting seat, and an output interface is arranged at the other end of the gas cylinder connecting seat. The output head is in threaded connection with the output interface. An installation cavity, a thorn needle hole and a gas passing hole are sequentially arranged in the axial direction in the output head. The installation cavity, the thorn needle hole and the gas passing hole are in communication. A thorn needle is in sliding fit in the thorn needle hole. A gas passing groove is arranged on the surface of the thorn needle in the longitudinal direction. A sealing gasket is arranged at one end of the thorn needle. A thorn needle reset spring is arranged between the end of the thorn needle and the thorn needle. The sealing gasket and the thorn needle reset spring are located in the installation cavity. A spiral groove is arranged on the output head. A horizontal pin is in fit in the spiral groove. An annular switch is sleeved on the output head. Two sliding grooves are symmetrically arranged on the inner arc surface of the switch in the axial direction. The two ends of the horizontal pin are in sliding fit in the two sliding grooves.

Description

Technical Field

[0001] This invention relates to the field of air gun technology, and in particular to an air cylinder adapter structure. Background Technology

[0002] Because disposable gas cylinders of different sizes have different threaded interfaces, and many devices that use high-pressure carbon dioxide gas (such as paintball guns) use a standardized output interface, namely a G1 / 2 pipe thread, this structure was designed to improve the compatibility of the equipment with gas cylinders. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a gas cylinder adapter structure that can be used to change gas cylinders of different specifications on the air gun and has the function of switching the airflow.

[0004] The objective of this invention is achieved as follows:

[0005] A gas cylinder adapter structure includes a gas cylinder connector and an output head. A hollow needle is installed axially in the middle of the gas cylinder connector. A gas cylinder interface is provided at one end of the gas cylinder connector for threaded connection with a gas cylinder. The needle is used to pierce the mouth of the gas cylinder in the connected state. An output interface is provided at the other end of the gas cylinder connector, and the output head is threadedly connected to the output interface.

[0006] The output head has an axially arranged mounting cavity, a pin hole, and an air passage hole. The mounting cavity, pin hole, and air passage hole are connected. A pin is slidably fitted in the pin hole along the axial direction. The surface of the pin has an air passage groove along the longitudinal direction. A sealing gasket is installed at one end of the pin. A pin return spring is provided between the pin end and the needle. The sealing gasket and pin return spring are located in the mounting cavity. Under normal conditions, the sealing gasket is in contact with the bottom wall of the mounting cavity under the action of the pin return spring, so that the air passage groove on the surface of the pin is in a sealed state. The output head has a spiral groove. A cross pin is fitted in the spiral groove. The end face of the pin abuts against the circumferential surface of the cross pin. A ring-shaped switch is fitted on the output head. Two sliding grooves are symmetrically arranged along the axial direction on the inner arc surface of the switch. The two ends of the cross pin are slidably fitted in the two sliding grooves. The two axial end faces of the switch are sealed with the gas cylinder connection seat and the output head respectively by sealing rings.

[0007] The switch is used to drive the horizontal pin to move along the spiral groove. The horizontal pin is used to press the ejector pin, causing the sealing gasket to detach from the bottom wall of the mounting cavity, thereby connecting the inner hole of the needle, the mounting cavity, the air groove on the surface of the ejector pin, and the air outlet to form an airflow passage.

[0008] Preferably, the output head is provided with an air passage chamber, one end of the ejector pin and the cross pin are located in the air passage chamber, the spiral groove is connected to the air passage chamber, and the air passage chamber connects the ejector pin hole to the air hole.

[0009] Preferably, the horizontal pin and the spiral groove are self-locking under the action of the ejector pin return spring.

[0010] Because of the above technical solution, the present invention adopts the output interface uniformly specified by high-pressure carbon dioxide gas equipment for the output head, and the gas cylinder interface of the gas cylinder connector adopts the thread specification corresponding to the disposable gas cylinder.

[0011] Different cylinder adapter structures can be used for cylinder thread interfaces of different specifications to improve the equipment's compatibility with cylinders.

[0012] Compared to conventional firearms with only firing controls, this invention also features a separate airflow switching function, which can serve as a safety feature. Alternatively, the trigger can be omitted, and firing can be initiated directly via the switch, resulting in a smaller firearm size suitable for applications requiring limited space. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] Figures 2a-2c This is a flowchart of the gas cylinder transfer structure.

[0015] Figure Labels

[0016] In the attached diagram, 1-gas cylinder; 2-gas cylinder connector; 3-puncture needle; 4-ejector return spring; 5-sealing gasket; 6-ejector; 7-horizontal pin; 8-switch; 9-output head. Detailed Implementation

[0017] A gas cylinder adapter structure includes a gas cylinder connector 2 and an output head 9. A hollow needle 3 is axially mounted on the middle part of the gas cylinder connector 2. One end of the gas cylinder connector 2 is provided with a gas cylinder interface for threaded connection with a gas cylinder 1. In this embodiment, a disposable carbon dioxide gas cylinder is used. The needle 3 is used to puncture the mouth of the gas cylinder 1 in the connected state. The other end of the gas cylinder connector 2 is provided with an output interface, and the output head 9 is threadedly connected to the output interface.

[0018] The output head 9 has an axially arranged mounting cavity, a pin hole, and an air passage hole. The mounting cavity, pin hole, and air passage hole are connected. A pin 6 is slidably fitted in the pin hole along the axial direction. The surface of the pin 6 has an air passage groove along the longitudinal direction. A sealing gasket 5 is installed at one end of the pin 6. A pin return spring 4 is provided between this end of the pin 6 and the needle 3. The sealing gasket 5 and the pin return spring 4 are located in the mounting cavity. Under normal conditions, the sealing gasket 5 is in contact with the bottom wall of the mounting cavity under the action of the pin return spring 4, sealing the air passage groove on the surface of the pin 6. The output head 9 has a spiral groove. A horizontal pin 7 is fitted in the spiral groove. The end face of the pin 6 abuts against the circumferential surface of the horizontal pin 7. A ring-shaped switch 8 is fitted on the output head 9. Two sliding grooves are symmetrically arranged along the axial direction on the inner arc surface of the switch 8. The two ends of the horizontal pin 7 are slidably fitted in the two sliding grooves. The two axial sides of the switch 8 are sealed with the gas cylinder connecting seat 2 and the output head 9 respectively by sealing rings.

[0019] Switch 8 is used to drive the horizontal pin 7 to move along the spiral groove. The horizontal pin 7 is used to press the ejector pin 6, so that the sealing gasket 5 is separated from the bottom wall of the mounting cavity, thereby connecting the inner hole of the needle 3, the mounting cavity, the air groove and the air outlet on the surface of the ejector pin 6 to form an airflow passage.

[0020] The output head 9 has an air passage chamber. One end of the ejector pin 6 and the horizontal pin 7 are located in the air passage chamber. The spiral groove is connected to the air passage chamber, and the air passage chamber connects the ejector pin hole to the air hole. The air passage chamber ensures that the airflow path is not blocked by the horizontal pin 7.

[0021] Under the action of the ejector pin return spring 4, the horizontal pin 7 and the spiral groove are self-locking. That is, the end face of the ejector pin 6 abuts against the circumferential surface of the horizontal pin 7 under the action of the spring force, and the horizontal pin 7 will not move along the spiral groove under the action of the ejector pin 6. The horizontal pin 7 is only driven by the switch 8. The switch is subject to the static friction of the sealing ring and only rotates during adjustment. It will not loosen or rotate at other times.

[0022] This invention relates to a device for converting a small-sized threaded disposable gas cylinder into a large-sized threaded cylinder (external thread of output head 9, i.e., G1 / 2 thread). When the gas cylinder 1 is installed in place on the gas cylinder connector 2, the piercing needle 3 can puncture the gas cylinder 1 to release gas. By setting a spiral groove (corresponding to a horizontal pin) on the output head 9, the horizontal pin 7 is inserted into the spiral groove (its function is the same as threaded engagement). When the switch 8 is turned, causing the horizontal pin to rotate, the horizontal pin 8 moves horizontally under the action of the spiral groove, thereby pushing the ejector pin 3 to control the opening and closing of the sealing gasket 5, realizing the flow of gas.

[0023] This invention features a function to switch gas flow on and off. A disposable gas cylinder is screwed into a gas cylinder connector and punctured by a needle. One end of the output head is then screwed onto the device receiving the gas (in this embodiment, a paintball gun). Rotating the switch causes the horizontal pin to move along a spiral surface, pushing the ejector pin to open the sealing gasket, allowing gas from the cylinder to enter the device through the output head. To stop the gas supply, simply rotate the switch in the opposite direction; the sealing gasket will reseal, blocking the gas output.

[0024] Specific steps:

[0025] like Figure 2a As shown, screw the disposable carbon dioxide cylinder onto the cylinder connector. The puncture needle punctures the cylinder; at this point, the needle is on the right side, and the sealing gasket is closed. After the cylinder is punctured, the sealing gasket remains sealed, preventing gas leakage.

[0026] like Figure 2b As shown, when the rotary switch is rotated, the horizontal pin moves along the spiral surface as the switch rotates, rotating from position a to position b, thereby generating longitudinal movement and pushing the ejector pin to open the sealing gasket.

[0027] like Figure 2c As shown, when the switch is rotated to the correct position, the ejector pin will fully lift the sealing gasket, and the air passage will be fully opened.

[0028] The above three steps demonstrate the working process of this gas cylinder transfer mechanism. It can improve the gas source compatibility of gas-using equipment and control the opening and closing of the gas circuit at any time.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A gas cylinder adapter structure, characterized in that: The device includes a gas cylinder connector and an output head. A hollow needle is installed axially in the middle of the gas cylinder connector. One end of the gas cylinder connector is provided with a gas cylinder interface for threaded connection with a gas cylinder. The needle is used to pierce the mouth of the gas cylinder in the connected state. The other end of the gas cylinder connector is provided with an output interface, and the output head is threadedly connected to the output interface. The output head has an axially arranged mounting cavity, a pin hole, and an air passage hole. The mounting cavity, pin hole, and air passage hole are connected. A pin is slidably fitted in the pin hole along the axial direction. The surface of the pin has an air passage groove along the longitudinal direction. A sealing gasket is installed at one end of the pin. A pin return spring is provided between the pin end and the needle. The sealing gasket and pin return spring are located in the mounting cavity. Under normal conditions, the sealing gasket is in contact with the bottom wall of the mounting cavity under the action of the pin return spring, so that the air passage groove on the surface of the pin is in a sealed state. The output head has a spiral groove. A cross pin is fitted in the spiral groove. The end face of the pin abuts against the circumferential surface of the cross pin. A ring-shaped switch is fitted on the output head. Two sliding grooves are symmetrically arranged along the axial direction on the inner arc surface of the switch. The two ends of the cross pin are slidably fitted in the two sliding grooves. The two axial end faces of the switch are sealed with the gas cylinder connection seat and the output head respectively by sealing rings. The switch is used to drive the horizontal pin to move along the spiral groove. The horizontal pin is used to press the ejector pin, causing the sealing gasket to detach from the bottom wall of the mounting cavity, thereby connecting the inner hole of the needle, the mounting cavity, the air groove on the surface of the ejector pin, and the air outlet to form an airflow passage.

2. The gas cylinder adapter structure according to claim 1, characterized in that: The output head is equipped with an air passage chamber. One end of the ejector pin and the horizontal pin are located in the air passage chamber. The spiral groove is connected to the air passage chamber, and the air passage chamber connects the ejector pin hole to the air hole.

3. The gas cylinder adapter structure according to claim 1, characterized in that: Under the action of the ejector pin return spring, the horizontal pin and the spiral groove are self-locking.

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