An air gun with an adjustable nozzle

Abstract

The utility model belongs to hand -pulled air gun, especially involve a kind of air gun with adjustable air nozzle, with air chamber subassembly, air chamber subassembly includes the air chamber inner core of bucket shape structure, its inside is used for installing gas cylinder, air chamber inner core has mounting hole in one end, along the length direction of air chamber inner core, air chamber inner core's mounting hole is connected with air inlet valve core and gas cylinder screw in proper order, the outlet of gas cylinder is installed in air inlet valve core, gas cylinder screw is equipped with air nozzle, and air nozzle is provided with air hole, and the gas in gas cylinder is outwardly discharged by air hole, and adjusting element is equipped in air hole to be used for adjusting the drift diameter of the air hole. The utility model adjusts the drift diameter of air hole by setting adjusting element in air hole, so as to be able to adjust gas output according to need, under the condition that air hole opening time is invariable, reduce drift diameter can reduce gas volume, velocity of projection becomes small, strength becomes big, otherwise velocity of projection becomes big, strength becomes small, so it can take into account velocity of projection, strength and the life of gas cylinder.

Description

Technical Field

[0001] This utility model relates to hand-operated air guns, and more particularly to an air gun with an adjustable nozzle. Background Technology

[0002] The pull-action BB gun is an air-powered carbon dioxide air gun. It uses liquid carbon dioxide from a small cylinder as its power source, and the gas chamber is a dedicated structure for changing the cylinder, playing a vital role in the overall power of the gun. The gas chamber is assembled inside the barrel. When the trigger is pulled, the valve opens, and carbon dioxide flows rapidly from the gas chamber to the barrel, achieving the firing process. Its working principle is based on the coordinated operation of aerodynamics and mechanical structure. The air inlet plays a crucial role, determining the lifespan of the gas cylinder. Currently, the size of the air inlet orifice is fixed and cannot be adjusted according to the needs of the air gun. Furthermore, the existing orifice size is generally larger than the air gun's requirements, resulting in excessive air output and a short gas cylinder lifespan. Summary of the Invention

[0003] The purpose of this invention is to provide an air gun with an adjustable nozzle to adjust the air output to meet the needs of the air gun and improve the service life of the air cylinder.

[0004] To achieve the objectives of this utility model, the technical solution of this utility model includes:

[0005] An air gun with an adjustable nozzle has an air chamber assembly, the key feature of which is that the air chamber assembly includes a cylindrical air chamber core for installing an air cylinder. One end of the air chamber core has a mounting hole. Along the length of the air chamber core, an inlet valve core and an air cylinder screw are sequentially connected to the mounting hole. The outlet of the air cylinder is installed in the inlet valve core. An air nozzle is provided inside the air cylinder screw, and the air nozzle has an air hole. Gas in the air cylinder is discharged outward through the air hole. An adjusting element is provided inside the air hole for adjusting the diameter of the air hole.

[0006] Furthermore, the vent includes a first ventilation section and a second ventilation section, which intersect to form a junction. The gas from the gas cylinder is discharged sequentially through the first ventilation section and the second ventilation section. The end of the first ventilation section away from the second ventilation section forms the air inlet of the vent, and the end of the second ventilation section away from the first ventilation section forms the air outlet of the vent. The adjusting member is installed in the second ventilation section, and the diameter of the junction is adjusted according to the position of the adjusting member within the second ventilation section, thereby adjusting the diameter of the vent.

[0007] Furthermore, the air nozzle includes a vent portion passing through the gas cylinder screw. The vent portion is a columnar structure. The air hole is disposed in the vent portion. The second vent section extends along the length direction of the vent portion. The first vent section extends from the outer side of the vent portion to its interior and intersects with the second vent section.

[0008] Furthermore, the first ventilation section has two sections, thus the vent has two air inlets.

[0009] Furthermore, the adjusting component is a stud threadedly connected to the second vent section, and the position adjustment of the stud within the second vent section is achieved through the threaded connection.

[0010] Furthermore, the second ventilation section is provided with an extension section that extends along its length direction and is opposite to the direction of the air outlet, and the diameter of the junction is adjusted according to the length of the stud inserted into the extension section.

[0011] Furthermore, the nozzle includes a spring head and a vent portion movably passing through the gas cylinder screw. The air hole is located in the vent portion. An elastic element is provided between the nozzle and the air inlet valve core. The two ends of the elastic element abut against the spring head of the nozzle and the air inlet valve core, respectively. The nozzle, by means of the elastic force of the elastic element, causes the spring head to press against the gas cylinder screw to close the air hole. The vent portion protrudes from the front end of the gas cylinder screw. The nozzle also includes a handle assembly and a trigger assembly connected to the air chamber assembly. The front end of the air chamber assembly is provided with a push head. The handle assembly is used to drive the air chamber assembly backward. The trigger assembly is used to drive the air chamber assembly forward. During the forward movement, the air chamber assembly impacts the push head. The nozzle, by means of this impact, retracts relative to the air inlet valve core and compresses the elastic element, thereby opening the air hole.

[0012] Furthermore, the bullet head has a conical structure, with its small end facing the air inlet valve core and cooperating with the elastic element, and its large end facing the gas cylinder screw. Under the elastic force of the elastic element, its end face presses against the gas cylinder screw. A sealing element is provided between the bullet head and the gas cylinder screw. The sealing element makes the end face of the bullet head form a sealed connection with the gas cylinder screw, thereby closing the air hole located in the ventilation section. As the elastic element is compressed, the end face of the bullet head moves away from the gas cylinder screw to release the sealed connection, thereby opening the air hole.

[0013] The advantages of this utility model are as follows: This utility model adjusts the diameter of the air hole by setting an adjusting component in the air hole, thereby adjusting the air output as needed. With the air hole opening time remaining unchanged, reducing the diameter can reduce the gas output, resulting in a lower firing speed and a higher force, and vice versa. In this way, the firing speed, force, and life of the gas cylinder can be balanced. Attached Figure Description

[0014] Figure 1 This is an explosion diagram of the air gun of this utility model.

[0015] Figure 2 This is an exploded view of the gas chamber assembly of this utility model.

[0016] Figure 3 This is a cross-sectional view of the air chamber assembly of this utility model.

[0017] Figure 4 This is a three-dimensional view of the air nozzle of this utility model.

[0018] Figure 5 This is a cross-sectional view of the air nozzle of this utility model.

[0019] Figure 6 This is a cross-sectional view of the gas chamber assembly and barrel connection structure of this utility model, wherein the gas port is in the closed state.

[0020] Figure 7 This is a cross-sectional view of the gas chamber assembly and barrel connection structure of this utility model, wherein the gas port is in the open state.

[0021] The components include: an inner core 11, mounting hole 111, gas cylinder 12, inlet valve core 13, gas cylinder screw 14, nozzle 15, air hole 151, inlet 151a, outlet 151b, first ventilation section 1511, second ventilation section 1512, junction 1513, extension section 1514, spring head 152, ventilation section 153, elastic element 16, adjusting element 17, sealing element 18, sealing gasket 18a, sealing washer 18b, first sealing ring 18c, second sealing ring 18d, and air pump hanger 19.

[0022] Gas chamber assembly 10, lever assembly 20, trigger assembly 30, bullet advance 40, main spring 50, barrel 100. Detailed Implementation

[0023] See Figure 1As shown, this utility model discloses an air gun with an adjustable nozzle, comprising an air chamber assembly 10 installed inside a barrel 100, a handle assembly 20 and a trigger assembly 30 respectively connected to the air chamber assembly 10 for driving the air chamber assembly 10 to move. Taking the direction of bullet ejection as forward and the opposite direction as rearward, in this embodiment, the handle assembly 20 and the trigger assembly 30 are located at the rear of the air chamber assembly 10. The handle assembly 20 is used to drive the air chamber assembly 10 to move rearward, and the trigger assembly 30 is used to drive the air chamber assembly 10 to move forward and supply the compressed gas inside the air chamber assembly 10 to the front end of the barrel 100 to fire the bullet.

[0024] See Figures 2 to 5 As shown, the gas chamber assembly 10 includes a barrel-shaped gas chamber core 11, which houses a gas cylinder 12. One end of the gas chamber core 11 has a mounting hole 111. Along the length of the gas chamber core 11, an inlet valve core 13 and a gas cylinder screw 14 are sequentially connected to the mounting hole 111. The end of the gas chamber core 11 furthest from the mounting hole 111 is connected to a gas cylinder hanger 19. The outlet of the gas cylinder 12 is installed in the inlet valve core 13, and the end of the gas cylinder 12 abuts against the gas cylinder hanger 19. The gas cylinder 12 is stabilized by the gas cylinder hanger 19 and the inlet valve core 13. A gas nozzle 15 is provided inside the gas cylinder screw 14, and the gas nozzle 15 has a gas hole 151. The gas in the gas cylinder 12 is discharged to the barrel through the gas hole 151 for firing bullets.

[0025] The air nozzle 15 includes a spring head 152 and a vent 153 that is movably inserted through the gas cylinder screw 14. An air hole 151 is provided in the vent 153. An elastic member 16 is provided between the air nozzle 15 and the air inlet valve core 13. The two ends of the elastic member 16 abut against the spring head 152 of the air nozzle 15 and the air inlet valve core 13, respectively. The air nozzle 15 uses the elastic force of the elastic member 16 to press the spring head 152 against the gas cylinder screw 14 to close the air hole 151 and to make the vent 153 protrude from the front end of the gas cylinder screw 14. The projectile head 152 has a conical structure, with its small end facing the air inlet valve core 13 and cooperating with the elastic element 16, and its large end facing the gas cylinder screw 14. Under the elastic force of the elastic element 16, its end face presses against the gas cylinder screw 14. A sealing element 18, specifically a second sealing ring 18d, is provided between the projectile head 152 and the gas cylinder screw 14. When the end face of the projectile head 152 presses against the gas cylinder screw 14, a sealed connection is formed between the end face of the projectile head 152 and the gas cylinder screw 14. At this time, the air port 151 is closed, and therefore, no thrust can be generated on the projectile. When the elastic element 16 is compressed, the end face of the projectile head 152 moves away from the gas cylinder screw 14, and the sealed connection between the two is released. At this time, the air port 151 opens, and the compressed gas in the gas cylinder 12 can be discharged from the air port 151 to generate thrust on the projectile.

[0026] In this embodiment, the elastic element 16 is a tower-shaped spring, with its small end abutting against the spring head 152 of the air nozzle 15 and its large end abutting against the intake valve core 13, located around the through hole inside the intake valve core 13. In other embodiments, the elastic element 16 may also be a conventional helical spring or a V-shaped spring sheet with approximately equal large diameter.

[0027] Because different air guns require different compressed gas thrusts during firing, this invention incorporates an adjusting element 17 within the air port 151 to regulate its diameter, thereby adjusting the gas output from the gas cylinder 12. By adjusting the diameter of the air port 151 using the adjusting element 17, the gas output can be adjusted as needed. With the opening time of the air port 151 remaining constant, reducing the diameter decreases the gas volume, extending the lifespan of the gas cylinder 12. Furthermore, a reduced gas volume results in a lower firing rate and higher force, and vice versa; thus, a balance is struck between firing rate, force, and cylinder lifespan.

[0028] See Figures 3 to 5 As shown, in this embodiment, the vent 151 is provided in the ventilation section 153. The vent 151 includes a first ventilation section 1511 and a second ventilation section 1512. The ventilation section 153 is a columnar structure. The second ventilation section 1512 extends along the length of the ventilation section 153. The first ventilation section 1511 extends from the outer side of the ventilation section 153 to its interior and intersects with the second ventilation section 1512. The first ventilation section 1511 and the second ventilation section 1512 intersect to form a junction 1513. Therefore, the junction 1513 is located in the middle of the ventilation section 153. The gas in the gas cylinder 12 is discharged sequentially through the first ventilation section 1511 and the second ventilation section 1512. The end of the first ventilation section 1511 away from the second ventilation section 1512 forms the air inlet 151a of the air hole 151, and the end of the second ventilation section 1512 away from the first ventilation section 1511 forms the air outlet 151b of the air hole 151. The adjusting member 17 is installed in the second ventilation section 1512, and the diameter of the junction 1513 is adjusted according to the position of the adjusting member 17 in the second ventilation section 1512, thereby adjusting the diameter of the air hole 151.

[0029] Since the opening and closing of the vent 151 is achieved by the contact or separation between the end face of the bullet head 152 and the gas cylinder screw 14, this embodiment sets the vent 151 as a two-section structure. The air inlet 151a of the vent 151 is located on the side of the ventilation section 153, and the air outlet 151b is located on the end face of the ventilation section 153. The structure is simple, facilitates the movement of the adjusting member 17, and makes the opening and closing of the vent 151 more direct and reliable. In other embodiments, the vent 151 can also be extended at an angle to the axis of the ventilation section 153. In this case, the vent 151 is a straight hole extending in a straight line. In order to adjust its diameter, an adjusting hole is opened on the side of the vent 151. The adjusting member moves in the adjusting hole, and the vent is adjusted by the change in the length of the adjusting member extending into the vent 151.

[0030] In this embodiment, the adjusting member 17 is a stud threadedly connected to the second vent section 1512, and the position of the stud within the second vent section 1512 is adjusted through the threaded connection. The second vent section 1512 also has an extension section 1514 extending along its length direction and away from the direction of the air outlet 151b. The diameter of the junction 1513 is adjusted according to the length of the stud inserted into the extension section 1514. When it is necessary to increase the diameter of the junction 1513, the stud is moved deeper into the extension section 1514, reducing the volume of the stud at the junction 1513, thereby reducing the portion of the junction 1513 that is blocked, and thus increasing the diameter of the junction 1513. Conversely, when it is necessary to decrease the diameter of the junction 1513, the stud is moved towards the direction of the air outlet 151b, increasing the volume of the stud at the junction 1513, thereby increasing the portion of the junction 1513 that is blocked, and thus decreasing the diameter of the junction 1513. In this embodiment, the diameter of the junction 1513 is adjusted by the movement of the stud in the second extension section 1512, and the adjustment method is simple and reliable.

[0031] The diameter mentioned in this utility model refers to the cross-sectional area of ​​the confluence 1513 perpendicular to the airflow direction. Specifically, in this embodiment, both the first ventilation section 1511 and the second ventilation section 1512 are circular holes, and the diameter of the confluence 1513 is the cross-sectional area of ​​the first ventilation section 1511 minus the cross-sectional area at the point where the first ventilation section 1511 and the adjusting member 17 overlap.

[0032] In this embodiment, there are two first ventilation sections 1511, which are arranged opposite each other to facilitate smoother gas flow. The air vent 151 has two air inlets 151a. Of course, the number of first ventilation sections 1511 is not specifically limited. In other embodiments, other numbers may be used, such as one, three, or four, depending on the specifications of the air gun and the required gas volume.

[0033] In addition, the various parts of the gas chamber assembly 10 also have multiple seals 18, for example as follows: a seal 18 is provided between the gas cylinder 12 and the inlet valve core 13, which is a sealing gasket 18a; a seal 18 is provided between the inlet valve core 13 and the inner core 11 of the gas chamber, which is a sealing washer 18b; a seal 18 is provided between the inlet valve core 13 and the gas cylinder screw 14, which is a first sealing ring 18c; and a seal 18 is provided between the gas cylinder screw 14 and the venting part 153 of the gas nozzle 15, which is a second sealing ring 18d.

[0034] See Figure 1 As shown, the front end of the gas chamber assembly 10 is also provided with a fixedly installed pusher head 40, and the rear end of the gas chamber assembly 10 is connected to the handle assembly 20 and the trigger assembly 30 through the rear gas cylinder bracket 19 and the main spring 50. It should be noted that the installation and connection relationship of the gas chamber assembly 10, the handle assembly 20, the trigger assembly 30, and the pusher head 40 within the barrel 100 is existing technology and will not be described in detail here.

[0035] See Figure 6 and Figure 7 As shown, when the handle assembly 20 pulls the air chamber assembly 10 backward, the main spring 50 is compressed. At this time, the elastic force of the elastic element 16 inside the air chamber assembly 10 causes the air nozzle 15 to press against the gas cylinder screw 14, and the air port 151 is in the closed state. Figure 6 When the trigger is pulled, trigger assembly 30 actuates, and the spring force of main spring 50 pushes gas chamber assembly 10 forward until the front end of gas chamber assembly 10 impacts the bullet head 40. Since the vent 153 of gas nozzle 15 is protruding, the vent 153 will move backward under the impact force, causing the gas nozzle 15 to compress the elastic element 16 and move backward. This causes the end face of bullet head 152 to move away from gas cylinder screw 14, thereby opening gas port 151. Compressed gas in gas cylinder 12 will enter the barrel through gas port 151, thus achieving the firing state. Figure 7 ).

[0036] The remaining undescribed parts are existing technology.

Claims

1. An air gun with an adjustable nozzle, comprising an air chamber assembly, characterized in that: The gas chamber assembly includes a barrel-shaped gas chamber core for installing a gas cylinder. One end of the gas chamber core has a mounting hole. Along the length of the gas chamber core, an inlet valve core and a gas cylinder screw are sequentially connected to the mounting hole. The outlet of the gas cylinder is installed in the inlet valve core. The gas cylinder screw has a nozzle with an air hole. Gas in the gas cylinder is discharged outward through the air hole. An adjusting element is provided in the air hole to adjust the diameter of the air hole.

2. An air gun with an adjustable nozzle according to claim 1, characterized in that: The vent includes a first ventilation section and a second ventilation section, which intersect to form a junction. The gas from the gas cylinder is discharged sequentially through the first ventilation section and the second ventilation section. The end of the first ventilation section away from the second ventilation section forms the air inlet of the vent, and the end of the second ventilation section away from the first ventilation section forms the air outlet of the vent. The adjusting member is installed in the second ventilation section, and the diameter of the junction is adjusted according to the position of the adjusting member within the second ventilation section, thereby adjusting the diameter of the vent.

3. An air gun with an adjustable nozzle according to claim 2, characterized in that: The air nozzle includes a vent section that passes through the gas cylinder screw. The vent section is a columnar structure. The air hole is disposed in the vent section. The second vent section extends along the length direction of the vent section. The first vent section extends from the outer side of the vent section to its interior and intersects with the second vent section.

4. An air gun with an adjustable nozzle according to claim 3, characterized in that: The first ventilation section has two sections, thus the vent has two air inlets.

5. An air gun with an adjustable nozzle according to claim 2, characterized in that: The adjusting component is a stud threaded to the second ventilation section, and the position of the stud within the second ventilation section is adjusted through the threaded connection.

6. An air gun with an adjustable nozzle according to claim 5, characterized in that: The second ventilation section has an extension section that extends along its length and is opposite to the direction of the air outlet. The diameter of the junction is adjusted according to the length of the stud inserted into the extension section.

7. An air gun with an adjustable nozzle according to claim 1, characterized in that: The air nozzle includes a spring head and a vent portion that is movably inserted through the gas cylinder screw. The air hole is located in the vent portion. An elastic element is provided between the air nozzle and the air inlet valve core. The two ends of the elastic element abut against the spring head of the air nozzle and the air inlet valve core, respectively. The air nozzle closes the air hole by means of the elastic force of the elastic element, which causes the spring head to press against the gas cylinder screw. The vent portion protrudes from the front end of the gas cylinder screw. The air nozzle also includes a handle assembly and a trigger assembly connected to the air chamber assembly. The front end of the air chamber assembly is provided with a push head. The handle assembly is used to drive the air chamber assembly backward. The trigger assembly is used to drive the air chamber assembly forward. During the forward movement, the air chamber assembly impacts the push head. The air nozzle retracts relative to the air inlet valve core and compresses the elastic element by means of this impact, thereby opening the air hole.

8. An air gun with an adjustable nozzle according to claim 7, characterized in that: The bullet head has a conical structure, with its small end facing the air inlet valve core and cooperating with the elastic element, and its large end facing the gas cylinder screw. Under the elastic force of the elastic element, its end face presses against the gas cylinder screw. A sealing element is provided between the bullet head and the gas cylinder screw. The sealing element makes the end face of the bullet head form a sealed connection with the gas cylinder screw, thereby closing the air hole located in the vent. As the elastic element is compressed, the end face of the bullet head moves away from the gas cylinder screw to release the sealed connection, thereby opening the air hole.

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