Pneumatic gun structure with pressure relief function

Abstract

The utility model discloses a pneumatic gun structure with a pressure relief function, which can quickly exhaust residual air in an air chamber. A pneumatic gun structure with a pressure relief function comprises a gun body, a chamber and an air passage, an air cylinder connecting port is arranged on the gun body, the air passage is respectively connected with the air cylinder connecting port and the chamber, an air chamber is arranged on the gun body, the air chamber is communicated with the air passage through an air hole, and an air release valve is arranged on the outer side of the air chamber and comprises a valve body fixed in the air chamber. The valve body is provided with an axial hole, a sealing shaft is arranged in the axial hole of the valve body, an airflow gap is formed between the sealing shaft and the axial hole of the valve body, the outer end of the sealing shaft is connected with a button used for pressing, a conical head is arranged at the inner end of the sealing shaft, an annular sealing gasket is arranged at the inner end of the axial hole of the valve body, and a return spring is arranged between the inner end of the sealing shaft and the side wall of the air chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic guns, in particular to a pneumatic gun structure with a pressure relief function, which is endowed with the pressure relief function for pneumatic training guns. Background Art

[0002] At present, the mainstream pneumatic guns on the market do not have a pressure relief structure and do not have the option of external pressure relief. To release the residual gas in the gas chamber, it is usually necessary to remove the gas cylinder, manually fire until the gas pressure in the gas chamber is insufficient to meet the automatic cycle action, and then manually pull the bolt handle structure to release the gas; for pneumatic guns with the gas chamber in the magazine, the magazine needs to be removed and other tools need to be used to assist in releasing the residual gas in the magazine gas chamber, and the operation steps are complicated.

[0003] The pneumatic gun can only be safely stored and disassembled after the residual air in the air chamber is completely removed. If there is residual air in the air chamber that has not been released, it will be very difficult to disassemble due to the air pressure; storing the pneumatic gun with air in it will reduce the service life of the O-ring. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a pneumatic gun structure with a pressure relief function, which can quickly discharge the residual air in the air chamber.

[0005] The purpose of the utility model is achieved in this way:

[0006] A pneumatic gun structure with a pressure relief function comprises a gun body, a cartridge chamber, and an airway, wherein a gas cylinder connection interface is provided on the gun body, and the airway is respectively connected to the gas cylinder connection interface and the cartridge chamber, and an air chamber is provided on the gun body, wherein the air chamber is connected to the airway through an air hole, and an air relief valve is provided on the outer side of the air chamber, wherein the air relief valve comprises a valve body fixed in the air chamber, wherein the valve body has an axial hole, a sealing shaft is provided in the axial hole of the valve body, an air flow gap is provided between the sealing shaft and the axial hole of the valve body, an outer end of the sealing shaft is connected to a button for pressing, an inner end of the sealing shaft is provided with a conical head, an annular sealing pad is provided at the inner end of the axial hole of the valve body, and a return spring is provided between the inner end of the sealing shaft and the side wall of the air chamber;

[0007] Under normal conditions, under the action of the return spring, the annular sealing gasket and the conical surface of the conical head cooperate to seal. When the button is pressed, the annular sealing gasket is separated from the conical surface of the conical head, and the airway is connected to the atmosphere through the air hole, the air chamber, and the air flow gap.

[0008] Preferably, the valve body of the air relief valve and the air chamber are threadedly matched and sealed by a sealing ring.

[0009] Preferably, it also includes a barrel seat, and the rear end of the gun body and the front end of the barrel seat are respectively provided with a gas cylinder connection interface, the air duct has two inlets and one outlet, the two inlets of the air duct are respectively connected to a gas cylinder connection interface, and one outlet of the air duct is connected to the tail end of the chamber, and the air chamber is located at the rear of the gun body, and the air chamber is connected to the gas output end of the air duct through an air hole.

[0010] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0011] To solve the contradiction between the complicated gas pressure relief operation steps and safe and rapid pressure relief, a pressure relief valve is set on one side of the air chamber assembly of the pneumatic gun, and the pressure relief valve is connected to the low-pressure area of ​​the air chamber. This structure can ensure that the air pressure in the air chamber of the pneumatic gun is completely released. After each use of the pneumatic gun, the remaining air in the air chamber can be quickly discharged and stored, or when the pneumatic gun fails, the pressure can be quickly released and the pneumatic gun can be disassembled to eliminate the fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the gas path in Example 2;

[0013] Figure 2 This is a schematic diagram of the installation position of the air release valve;

[0014] Figure 3 It is a schematic diagram of the air chamber in the second embodiment;

[0015] Figure 4 It is a schematic diagram of the pores in Example 2;

[0016] Figure 5 It is a schematic diagram of the structure of the air release valve;

[0017] Figure 6 This is a schematic diagram of the structure of the pneumatic gun in the second embodiment.

[0018] Reference numerals

[0019] In the accompanying drawings, 1 is a gas cylinder connection interface at the rear end of the gun body, 2 is a gas cylinder connection interface at the front end of the barrel seat, 3-5 are positions in the gas circuit, 6 is a gas guide copper tube, 7 is a gun body, 8 is a gas relief valve, 9 is a low pressure area, 10 is a high pressure area, 11 is a transverse section of the air hole, and 12 is a longitudinal section of the air hole;

[0020] 801 is the valve body, 802 is the sealing shaft, 803 is the button, 804 is the annular sealing gasket, and 805 is the return spring. DETAILED DESCRIPTION

[0021] Embodiment 1

[0022] A pneumatic gun structure with a pressure relief function comprises a gun body 7, a cartridge chamber, and an airway. A gas cylinder connection interface (corresponding to any one of the second embodiment) is provided on the gun body, and the airway is respectively connected to the gas cylinder connection interface and the cartridge chamber. An air chamber is provided on the gun body, and the air chamber is connected to the airway through an air hole. An air relief valve is provided on the outside of the air chamber, and the air relief valve comprises a valve body 801 fixed in the air chamber, the valve body has an axial hole, a sealing shaft 802 is provided in the axial hole of the valve body, an air flow gap is provided between the sealing shaft and the axial hole of the valve body, the outer end of the sealing shaft is connected to a button 803 for pressing, the inner end of the sealing shaft is provided with a conical head, an annular sealing gasket 804 is provided at the inner end of the axial hole of the valve body, and a return spring 805 is provided between the inner end of the sealing shaft and the side wall of the air chamber; under normal conditions, under the action of the return spring, the annular sealing gasket cooperates with the conical surface of the conical head for sealing, and when the button is pressed, the annular sealing gasket is separated from the conical surface of the conical head, and the airway is connected to the atmosphere through the air hole, the air chamber, and the air flow gap. The valve body of the air relief valve is threadedly matched with the air chamber and is sealed by a sealing ring.

[0023] Embodiment 2

[0024] The prior application has application number: CN202322279612.6, which is a double gas cylinder interface structure for a pneumatic gun. This embodiment improves it.

[0025] It also includes a barrel seat, and the rear end of the gun body and the front end of the barrel seat are respectively provided with a gas cylinder connection interface, the gas channel has two inlets and one outlet, the two inlets of the gas channel are respectively connected to a gas cylinder connection interface, and one outlet of the gas channel is connected to the tail end of the chamber (not shown, located in front of position 5), and the gas chamber is located at the rear of the gun body, and the gas chamber is connected to the gas output end of the gas channel through the air hole. In this embodiment, the gas chamber includes a relief valve installation gas chamber and a confluent gas chamber, and the relief valve installation gas chamber and the confluent gas chamber are connected through the air hole transverse section 11 and the air hole longitudinal section 12, and the pressure relief valve 8 is installed in the relief valve installation gas chamber, and the confluent gas chamber is respectively connected to the gas channels (gas output ends, low pressure areas) corresponding to the two gas cylinder connection interfaces.

[0026] See also Figure 1 The gas enters from the gas cylinder connection interface 1 at the rear end of the gun body along the direction of the arrow, and comes out from 5, acting on the projectile in the chamber to provide energy for the projectile; the gas enters from the gas cylinder connection interface 2 at the front end of the barrel seat along the direction of the arrow, and from the AA view Figure 3 The gas comes out from the rear end 1 interface or the front end 2 interface to prevent gas leakage.

[0027] See also Figure 2 The air release valve 8 is arranged on the outside of the air chamber at the rear of the pneumatic gun, and the operator can press it quickly.

[0028] See also Figure 3 The gas chamber has a high-pressure area 10 and a low-pressure area 9. The high-pressure area is the gas input end, the low-pressure area is the gas output end, and the air release valve is located in the low-pressure area.

[0029] See also Figure 4 , Figure 5 The air release valve is located in the low-pressure area of ​​the air chamber, so that the gas can be completely released. If it is in the high-pressure area, the gas discharge effect is poor.

[0030] See also Figure 6 When the button is not pressed, the gas can only enter from the direction of the arrow and not in the reverse direction. The one-way valve principle can seal the gas chamber under normal conditions.

[0031] When the pneumatic gun is finished using or needs to be repaired, the air pressure in the air chamber can be released by simply pressing the air release valve. After the air pressure in the air chamber is released, it can be safely stored or disassembled. After the pressure relief valve is set, the safety and operability of the pneumatic gun are greatly improved.

[0032] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A pneumatic gun structure with a pressure relief function, comprising a gun body, a chamber, and an airway, wherein the gun body is provided with a gas cylinder connection interface, and the airway is respectively connected to the gas cylinder connection interface and the chamber, and is characterized in that: An air chamber is provided on the gun body, the air chamber is connected to the air passage through an air hole, an air release valve is provided on the outside of the air chamber, the air release valve comprises a valve body fixed in the air chamber, the valve body has an axial hole, a sealing shaft is provided in the axial hole of the valve body, an air flow gap is provided between the sealing shaft and the axial hole of the valve body, the outer end of the sealing shaft is connected to a button for pressing, the inner end of the sealing shaft is provided with a conical head, the inner end of the axial hole of the valve body is provided with an annular sealing gasket, and a return spring is provided between the inner end of the sealing shaft and the side wall of the air chamber; Under normal conditions, under the action of the return spring, the annular sealing gasket and the conical surface of the conical head cooperate to seal. When the button is pressed, the annular sealing gasket is separated from the conical surface of the conical head, and the airway is connected to the atmosphere through the air hole, the air chamber, and the air flow gap.

2. The pneumatic gun structure with pressure relief function according to claim 1, characterized in that: The valve body of the air relief valve is threadedly matched with the air chamber and is sealed by a sealing ring.

3. The pneumatic gun structure with pressure relief function according to claim 1, characterized in that: It also includes a barrel seat, and the rear end of the gun body and the front end of the barrel seat are respectively provided with gas cylinder connection interfaces, the air channel has two inlets and one outlet, the two inlets of the air channel are respectively connected to a gas cylinder connection interface, and one outlet of the air channel is connected to the tail end of the chamber, and the air chamber is located at the rear of the gun body, and the air chamber is connected to the gas output end of the air channel through an air hole.

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