TWI586412B - Exhaust air gun - Google Patents

Description

Retreat air gun

The present invention relates to a retracting air gun that is improved in the use of an air lock switch for use with a retractable air gun.

In the past, a game air gun that fired a BB bomb by a compressed gas has been developed. Further, even in the air gun, a retractable air gun described in Patent Document 1 is known in order to obtain a game air gun that is close to the sense of use of a real gun.

In this way, the air gun system has an air lock switch structure. The air lock switch structure is used to hit the gas passage by hitting the gas release valve rear end to open the gas passage, and the compressed gas to be released is used for the spray projectile. Or use the unloading action of the slider to switch.

For such a retractable air gun, a fixed air gun in which the conventional sliding member does not move has been known, but compared with the fixed air gun, the retracting air gun has a problem of leakage of the compressed gas of the air lock switch, and the compression is performed. There are still drawbacks from the viewpoint of gas use efficiency.

Therefore, the air lock switch used in the conventional retracting air gun will be described with reference to the drawings. As shown in Figure 10, the release of compressed gas A communication path 43 is formed in the front side of the cylinder 41 provided above the outlet passage 40, and the communication passage 43 communicates with the chamber 42 (see FIG. 11) in which the projectile before the cylinder 41 is placed in front of the cylinder 41, and is formed at the rear side thereof. There is a spring chamber 44 that slightly enlarges the inner diameter than the communication passage 43. Then, the switch spring 45 is housed in the spring chamber 44, and a switch housing chamber 47 having a slightly larger inner diameter than the spring chamber 44 is formed from the spring chamber 44 via the circular pin opening 46, and the rear reaches the piston housing chamber of the cylinder 41. 49 (refer to Figure 11). Further, a discharge port 50 that communicates with the discharge passage 40 is formed below the switch accommodation chamber 47.

The switch 51 accommodated in the switch housing chamber 47 is shown in a longitudinal cross-sectional view in Fig. 10, and its actual shape is formed in the switch spring 45 before the conical portion that opens and closes the circular plug 46. The guiding portion 51a that moves inside. Further, the outer peripheral groove portion of the conical portion of the switch 51 is fitted with an O-ring 51b which receives the gas pressure of the compressed gas released upward from the discharge port 50 against the elastic force of the switch spring 45, and turns the switch 51 toward Pushing in front pushes the plug 46 thereby.

Further, the switch housing chamber 47 is provided with a pin 47a that straddles the rear portion thereof, and the switch 51 that presses the switch spring 45 rearward is stopped by the pin 47a.

With the above configuration, as shown in Fig. 11, when the clicker 52 is pushed down by the elastic force of the hitting spring (not shown) by the lower trigger 52, the valve is hit by the hitting of the hit 53 Pushing forward, thereby pushing the gas release valve 55. At this time, the gas release valve 55 is opened by moving against the elastic force of the valve spring 56, and the gas cylinder 57 to be disposed from below is opened. After the supplied compressed gas is released to the discharge passage 40, the compressed gas flows into the cylinder 41 through the discharge port 50.

Next, the piston 48 starts to move rearward by the compressed gas flowing into the cylinder 41, and the slider 58 fixed to the cylinder 41 starts to move rearward. At this time, in the switch housing chamber 47 in front of the cylinder 41, the switch 51 is separated from the bolt 46 by the elastic force of the switch spring 45, and the compressed gas flowing in from the gap of the plug 46 is seated in the chamber 42. The projectile B moves forward. Thereafter, the switch 51 is pushed from the rear by filling the inside of the cylinder 41 with the compressed gas supplied from the gas cylinder 57, and the switch 51 closes the plug 46 as shown in Fig. 12.

However, at this time, since the compressed gas supplied from the gas cylinder 57 is blown upward from the discharge port 50, the compressed gas pushes the side surface of the switch 51 upward from the lower side, so the switch 51 and the plug which should be in close contact with the plug 46 A gap is formed between the ports 46 to cause leakage of compressed gas.

As a result, not only the problem of leakage of the compressed gas of the air lock switch 60 but also the configuration of the conventional air lock switch 60, as described above, the switch 51 has a discharge port 50 underneath, so that it is utilized. The slender tool releases the passage 40 from below the discharge opening 50, maliciously modifying the doubts of the air lock switch 60.

[Previous Technical Literature] [Patent Literature]

Patent Document 1 Japanese Patent Laid-Open No. Hei 8-136188

The present invention has been developed in view of the above circumstances, and an object thereof is to provide a gas leakage prevention by using an air lock switch for a game retracting air gun to improve the use efficiency of the compressed gas and prevent malicious modification of the air lock switch. The retreat air gun.

In order to solve the above problems, the retracting air gun of claim 1 of the present invention is characterized in that: in the front of the cylinder provided above the release passage of the compressed gas of the game retracting air gun, along the A cylindrical switch box is fixed to the inner circumference of the chamber where the projectile is placed before the launch, and a switch having a spherical surface facing the circular plug formed on the rear side of the internal passage of the switch box The ground is tightly attached, and a switch spring for biasing the switch to the rear side is provided in the internal passage of the switch box, and an open portion is formed on an upper portion of the release passage side of the switch box, and a lower portion of the open portion has a side from the release passage side The inflow of the compressed gas is blocked by the closing portion, whereby the compressed gas flowing into the cylinder through the discharge passage flows in the direction of the plug from the upper open portion around the outer side of the switch case.

In addition, the retracting air gun of the second aspect of the present invention is in the first item of the patent application scope, and the rear end of the closing portion of the switch box is formed with a function of the brake member when the switch moves to the rear side. Inner circumference protrusion.

Moreover, the retreat of item 3 of the patent application scope of the present invention The air gun is in the first or second item of the patent application scope, and is provided along the outer side of the rear end of the closing portion of the switch box: a pin that functions as a brake when the switch moves to the rear side.

According to the retracting air gun of the present invention, the shape of the switch is formed as a spherical surface that faces the circular plug formed on the side of the inner side of the inner passage of the switch box. Further, an open portion is formed in an upper portion of the discharge passage side of the switch box, and a lower portion of the open portion has a blocking portion that cuts off the flow of compressed gas from the discharge passage side, thereby causing the discharge passage to flow into the cylinder. The compressed gas flows in from the upper open portion toward the plug opening around the outside of the switch box.

Therefore, the compressed gas supplied through the release passage is first intercepted by the closing portion of the switch box, so that it does not directly contact the switch, and flows into the plug port from the upper open portion of the closed portion of the switch box to the compressed gas. The inflow pressure becomes a mitigation state.

Further, since the shape of the switch is formed to have a spherical surface that is in close contact with the circular plug, the pressure of the compressed gas that flows in from the upper open portion is pushed from the side because of the spherical surface of the switch and the round plug. The mouth is in contact with each other in a state of close contact with each other, so that the compressed gas does not leak from the plug, thereby increasing the efficiency of use of the compressed gas.

Moreover, according to the present invention, the occlusion portion of the switch box is provided above the release passage, so that even if the elongated tool or the like is inserted into the release passage, the switch housed in the switch box cannot be modified, and the evil can be prevented. Intentional transformation.

1‧‧‧ air lock switch

2‧‧‧release channel

3‧‧‧ cylinder

4‧‧‧膛室

5‧‧‧Switch box

5a‧‧‧ Shell

5b‧‧‧ inner shell

5c‧‧‧Switch storage room

6‧‧‧ Socket

7‧‧‧ switch

8‧‧‧Switch spring

9‧‧ ‧ sales

10‧‧‧Open Department

11‧‧‧ occlusion department

12‧‧‧ inner circumference

13‧‧ ‧ sales

14‧‧‧ gap

15‧‧‧ gun body

16‧‧‧ grip

17‧‧‧ gas cylinder

17a‧‧‧Spray outlet

18‧‧‧Cylinder room

19‧‧‧ magazine

20‧‧‧ valve body

20a‧‧‧Valve spring

21‧‧‧槌

22‧‧‧ gas release valve

23‧‧‧ release

24‧‧‧ board machine

25‧‧‧Valves

26‧‧‧Air passage

27‧‧‧Piston

28‧‧‧Sliding parts

29‧‧‧Shot iron

30‧‧‧ gun body

31‧‧‧ Spring

B‧‧‧projectile

G‧‧‧Retired air gun

Fig. 1 is an overall sectional view showing an untwisting air gun of an embodiment of the present invention.

Fig. 2 is a cross-sectional view showing an important part of the air lock switch of the retracting air gun of the embodiment of the present invention and its surroundings.

Fig. 3 is a view showing an air lock switch of an untwisting air gun according to an embodiment of the present invention, a side view of the third (a) figure, an end view of the rear side of the third (b) figure, and a third (c). The AA arrow line sectional view and the third (d) drawing of the third (a) drawing are longitudinal sectional views of the third (a) drawing.

Fig. 4 is an overall perspective view showing the air lock switch of the retracting air gun of the embodiment of the present invention in a perspective view.

Fig. 5 is a cross-sectional view showing an essential part of the operation of the retracting air gun of the embodiment of the present invention.

Fig. 6 is a cross-sectional view showing an essential part of the operation of the retracting air gun of the embodiment of the present invention.

Fig. 7 is a cross-sectional view showing an essential part of the operation of the retracting air gun of the embodiment of the present invention.

Fig. 8 is a cross-sectional view showing an essential part of the operation of the retracting air gun of the embodiment of the present invention.

Fig. 9 is a cross-sectional view showing an essential part of the operation of the retracting air gun of the embodiment of the present invention.

Figure 10 is a cross-sectional view of an important part of the air lock switch of the conventional air gun and its surroundings.

Fig. 11 is a cross-sectional view showing an important part of the operation of the conventional air ejector.

Fig. 12 is a cross-sectional view showing an important part of the operation of the conventional air ejector.

Embodiments of the present invention will be described with reference to the drawings.

[Examples]

The structure of the air lock switch 1 of the retracting air gun G of the present embodiment is configured as shown in Fig. 1 or Fig. 2, and is disposed above the release passage 2 of the compressed air of the game retracting air gun G. In the front inner portion of the cylinder 3, the switch case 5 is fixed along the inner circumference that communicates with the chamber 4 in which the projectile B before the launch is seated.

The switch box 5 is formed into a cylindrical shape as shown in FIG. 2, FIG. 3 or FIG. 4, and is provided with a switch 7 having a spherical shape, and a circular plug formed by the spherical surface and the rear side of the internal passage thereof. 6 face to face. As the switch 7, a steel ball, a bearing ball, a plastic BB bomb, or the like can be used. In addition, although the switch 7 uses a spherical object in the second figure, the third figure, the fourth figure, and the like, if it has a spherical surface that is at least one of a spherical shape in a shape facing the circular plug 6, even if it is not a complete spherical shape, be usable.

Further, a switch spring 8 that biases the switch 7 toward the rear side is provided in the internal passage of the switch case 5. One end of the switch spring 8 is supported by a pin 9 fixed in such a manner as to straddle the inside of the front end of the switch case 5.

Further, in the present embodiment, the plug 6 of the above-described switch case 5 is fixed to the inside of the cylindrical outer casing 5a as shown in the third (d), and the rear end side of the inner casing 5b is In the middle, the spherical surface of the switch 7 is brought into close contact with the rear end side of the inner casing 5b of the switch case 5.

Further, in the present embodiment, the open portion 10 is formed behind the switch case 5, that is, the upper portion of the release passage 2 side, and the lower portion of the open portion 10 has the flow of compressed gas from the side of the discharge passage 2 The blocked occlusion portion 11. In the present embodiment, the lower portion on the rear side of the outer casing 5a is left, and the upper portion is cut off as the open portion 10, and the lower portion is used as the closed portion 11.

Further, a switch 7 is provided in the switch housing chamber 5c at the upper portion of the occluding portion 11, and the switch 7 is elastically supported at the rear end of the switch spring 8, and a switch 7 is formed at the rear end of the occluding portion 11 of the switch case 5. The inner peripheral projection 12 that functions as a brake when moving toward the rear side. Further, as for the member having the function of the brake member, the pin 13 can be fixed along the outer side of the rear end of the closing portion 11 of the switch case 5 as shown in Fig. 2 .

Further, in the above-described configuration, as shown in FIG. 2, a gap 14 is formed in the inner circumference of the cylinder 3 corresponding to the outer circumference of the closing portion 11 of the switch case 5, and flows into the cylinder 3 from the discharge port 23 via the discharge passage 2. The compressed gas flows around the gap 14 on the outer side of the switch box 5 from the upper open portion 10 In.

Here, the supply structure of the compressed air of the evacuation air gun G configured as described above and the structure around it will be described. As shown in Fig. 1, in the grip 16 of the gun body 15, a cylinder chamber 18 for accommodating a gas cylinder 17 which is a supply source of compressed gas is provided, and a magazine 19 is formed in front of the cylinder chamber 18.

Further, a valve body 20 is fixed in the middle of the discharge passage 2 from the discharge port 17a of the gas cylinder 17 to the discharge passage 2 in the cylinder 3, and the valve body 20 is provided with a gas release valve 22 that opens and closes the discharge passage 2. By the opening operation of the gas release valve 22, the compressed gas passes through the discharge passage 2, and flows into the cylinder 3 through the upper discharge port 23.

With the above configuration, the retracting air gun G of the present embodiment, as shown in FIG. 5, is caused by the buckle mechanism 24 to cause the hammer 21 to be pushed down by the elastic force of the unillustrated hammer spring. The tapping of the cymbal 21 pushes the valve striking blade 25 forward and pushes it into the gas release valve 22. At this time, the gas release valve 22 moves forward against the elastic force of the valve spring 22a, and the compressed gas supplied from the gas cylinder 17 provided below is released to the discharge passage 2, and the compressed gas flows into the cylinder through the discharge port 23. 3 inside.

Next, as shown in Fig. 6, the piston 27 is moved to the rear by the compressed gas flowing into the cylinder 3, and the slider 28 fixed to the cylinder 3 starts to move rearward. At this time, in the switch housing chamber 5c in front of the cylinder 3, the switch 7 is opened from the bolt 6 by the elastic force of the switch spring 8, and the compressed gas is seated in the chamber 4 via the opening gap of the plug 6. Projectile B is launched forward. After that, by the cylinder 3 The compressed gas is filled against the elastic force of the switch spring 8 to push the switch 7 from the rear. As shown in Fig. 7, the switch 7 blocks the plug 6.

At this time, the compressed gas released from the discharge port 23 through the discharge port 23 from the discharge port 23 first contacts the clogging portion 11 of the switch case 5 to suppress its direct impact to the switch 7, and then, around the occluding portion of the switch case 5. The outer side of 11 flows in from the upper opening portion 10 toward the plug port 6. Further, since the spherical surface of the switch 7 is in close contact with the circular plug 6 of the switch case 5, the compressed gas is sealed so as not to leak from the plug 6.

Further, since the switch 7 seals the plug 6 of the switch case 5 as shown in Fig. 7, the compressed gas does not leak out, so that the piston 27 in the cylinder 3 is retracted by filling the inside of the cylinder 3 with compressed gas. Pushing, and as shown in Fig. 8, the slider 28 starts to retreat at the same time.

At this time, as shown in Fig. 8, the hammer 21 is pushed backward by the backward movement of the slider 28. Thereby, when the valve clicker 25 is retracted to release the pressing of the gas release valve 22, the gas release valve 22 is retracted by the elastic force of the valve spring 20a, and the gas passage 26 is closed, and the gas cylinder is cut off. 17 compressed gas supply.

Then, after the supply of the compressed gas is cut off as described above, the slider 28 is retracted by the inertia of the piston 27 and the expansion of the compressed gas remaining in the cylinder 3, and when a part thereof comes into contact with the convex portion of the cylinder 3, it will be with the cylinder 3. The integrated slider 28 is actuated in such a manner as to return to the predetermined position of the cylinder 3. At this time, the hammer 21 changes the holding position of the striker 29 by the pressing action of the slider 28, and the hammer 21 returns to the predetermined position.

Then, as shown in Fig. 9, when the slider 28 is retracted to When the gun body 30 is abutted, the internal pressure in the cylinder 3 is lowered, and when the elastic force of the switching spring 8 of the air lock switch 1 is higher than the internal pressure in the cylinder 3, the air lock switch 7 is retracted. Then, the plug 6 is opened again, and the slider 28 is advanced by the elastic force of the spring 31 to return to the original position shown in Fig. 5.

As described above, in the present embodiment, since the action of the switch 7 of the air lock switch 1 can be prevented from being affected by the compressed gas from the release passage 2, the bolt 6 is completely sealed, so that the air lock switch 1 does not leak and compress. Gas, which increases the efficiency of the use of compressed gas.

Further, in the present embodiment, the closing portion 11 of the switch case 5 is provided above the discharge passage 2, and the switch 7 is in a closed state. Therefore, even if an elongated tool or the like is inserted into the discharge passage 2, it cannot be stored in the closed portion. The switch 7 of the switch box 5 is modified to prevent malicious modifications.

[Industry use possibility]

The retractable air gun of the present invention can be utilized as a retracting air gun that prevents the use of gas leakage generated by the air lock switch of the game retracting air gun to increase the efficiency of use of the compressed gas and prevents malicious modification of the air lock switch.

1‧‧‧ air lock switch

2‧‧‧release channel

3‧‧‧ cylinder

5‧‧‧Switch box

5c‧‧‧Switch storage room

6‧‧‧ Socket

7‧‧‧ switch

8‧‧‧Switch spring

9‧‧ ‧ sales

10‧‧‧Open Department

11‧‧‧ occlusion department

12‧‧‧ inner circumference

13‧‧ ‧ sales

14‧‧‧ gap

23‧‧‧ release

Claims (3)

An unwinding air gun characterized in that: in the inner side of the cylinder disposed above the release passage of the compressed gas of the game retracting air gun, the inner circumference is connected to the chamber which is seated by the projectile before the launch. a tubular switch box is fixed, and a switch having a spherical surface is arranged. The spherical surface is in close contact with the circular plug formed by the rear side of the internal passage of the switch box, and is disposed in the internal passage of the switch box. The switch spring that is biased toward the rear side has an open portion formed on the upper side of the release passage side of the switch box, and the lower portion of the open portion has a closed portion that cuts off the flow of the compressed gas from the discharge passage side, thereby allowing The compressed gas flowing into the cylinder through the discharge passage flows in the direction of the plug from the upper open portion around the outer side of the switch case. The retracting air gun according to the first aspect of the invention, wherein the rear end of the closing portion of the switch box is formed with an inner peripheral protrusion that functions as a brake when the switch moves to the rear side. The retracting air gun according to the first or second aspect of the invention, wherein the outer side of the rear end of the closing portion of the switch box is provided with a pin that functions as a brake when the switch moves to the rear side.