JP3049066B1 - Revolver air gun - Google Patents

Abstract

A revolver-type air gun has a short gas passage leading to a bullet holding portion to obtain a strong bullet firing force. SOLUTION: In the conventional revolver type air gun, a gas tank or a gas cylinder had to be built in a grip part due to the presence of a cylinder.
The cylinder 2 is composed of a gas generation unit 30 fixed horizontally to the cylinder and a pseudo cylinder 20 rotating around the gas generation unit 30, and the gas pressure generation unit 30
Have gas passages 52,5 leading to the gas tank 51 and the bullet holder 23.
A high-pressure gas in the gas tank 51 is guided to the bullet holding portion 23 by opening the opening / closing valve 35 by using the rotating force of the hammer 7 by incorporating the opening / closing valve 35 interposed in the middle of 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revolver type air gun, and more particularly to a structural improvement for improving the firing pressure of a bullet and reducing the consumption of gas liquid.

[0002]

2. Description of the Related Art An air gun is a kind of toy, but since it is modeled on an actual gun, various types are sold. Unlike the other types of guns, the revolver type air gun has a basic structure in which a cylinder, which is a rotating body, is loaded, so that a gas tank or gas cylinder that supplies firing gas pressure to a bullet (BB bullet) is used. There are restrictions on the installation location

Conventionally, as a typical example of a bullet firing mechanism of a revolver type air gun, a structure as shown in FIG. 16 has been adopted. A gas cylinder 102 can be built in and loaded into a grip portion 101, and the gas cylinder 102 Valve 102a
And the back of the cylinder 103 are communicated via a gas passage 104 formed in the gun body. Then, the hammer 106 is rotated by the firing operation of the trigger 105, and the cam 107 is rotated by using the rotating force, and the cam 107 is
2a is opened and the high-pressure gas in the gas cylinder 102 is
Spout. On the other hand, the cylinder 103 is loaded with a hollow simulated cartridge 108 in which a BB bullet 109 is press-fitted at the tip thereof.
When high-pressure gas is supplied to the back of the simulation cartridge 108 through 104, the BB bullet 109 is released from the press-fit state, and is further pushed out toward the muzzle 110 by the pressure of the high-pressure gas at a stroke, and the muzzle 1
It will be fired from 10.

[0004] Air guns and model guns are required to be very similar in design and appearance to actual guns, but must not be modified into actual guns. Therefore, in order to eliminate the possibility of modification, hitting on the extension of the muzzle shaft with a hammer has recently been prohibited, and penetration of the cartridge loading structure has been prohibited even with a simulated one. There are various regulations such as

[0005]

In the revolver air gun, the gas ejected from the valve 102a fills the gas passage 104 and the hollow portion of the cartridge 108 and presses the back of the BB bullet 109. Since the gas cylinder 102 is built in the grip portion 101, the gas passage
104 is long, and the hollow portion of the cartridge 108 has a considerable length. Further, in order to secure the supply amount and the supply speed of the gas required for the firing of the BB bullet 109, the inner diameter of the gas passage 104 and the like is fixed. This has to be done as described above, and the space volume which is inevitably increased in pressure during firing increases.

For this reason, the consumption amount of the gas liquid in the gas cylinder 102 is increased, and volatile gas such as chlorofluorocarbon is used as the gas liquid. This causes a problem that the pressure is lowered and the desired firing pressure cannot be obtained.

On the other hand, other types of air guns other than the revolver type can be avoided by an appropriate design because there is a relatively high degree of freedom in the location of the gas cylinder or gas tank. Therefore, the above-mentioned problem is peculiar to a revolver type air gun. Then, this invention was created for the purpose of solving the said subject in a revolver type air gun by a structural improvement, taking into consideration the regulation of modification of an air gun.

[0008]

According to the present invention, in a revolver-type air gun, a housing is suspended inside a cylinder loading frame along an axial direction of a base pin, and a rear suspension supporting portion extends in the axial direction. A gas pressure generating portion in which a protruding sleeve is fitted in a through hole formed in a cylinder loading frame of the gun body, and a rotation restraining mechanism is provided in one or both of the horizontal support portions; And a hollow cylinder that covers the gas pressure generating portion and rotates around the axis of the base pin, and includes a feed hole formed concentrically in the front annular end plate and a bullet holding portion inside the feed hole. A cylinder is constituted by a pseudo cylinder portion which is sequentially opposed to the muzzle position in conjunction with the operation of the trigger, and a gas tank is provided in the housing of the gas pressure generating portion, and the gas tank is provided behind the bullet holding portion of the pseudo cylinder. Moth led to A passage, a valve interposed in the gas passage, an operation pin which is fitted in the sleeve of a rear transverse support portion and slides, and valve control for instantaneously opening the valve based on driving of the operation pin The present invention relates to a revolver-type air gun having a built-in mechanism and a drive transmission mechanism for driving the operating pin in the opening control direction of the valve in conjunction with a firing operation.

According to the present invention, since the gas tank is built in the cylinder, the passage to the bullet holding portion of the pseudo cylinder can be made extremely short, the amount of gas liquid consumed can be suppressed, and the firing pressure of the bullet decreases. Can also be prevented.

As the drive transmission mechanism in the present invention, various configurations such as a mechanism for driving an operation pin using a bolt that rotates up and down in conjunction with the operation of a trigger can be envisaged.
The operating pin of the gas pressure generating part is urged backward by a spring,
With a configuration in which the operating pin is hit with the rotation force of the hammer based on the firing operation of the trigger, the rotation force of the hammer can be used as it is, so that there is no need to add a separate drive mechanism, the operation of the hammer and the firing of bullets It is also easy to take the synchronization timing with.

Further, in the air gun of the present invention, since the inside of the cylinder is constituted by a gas pressure generating portion, there is no room for modification in the cartridge loading structure, and the rotational force of the hammer is used as described above. Even in this case, it is almost impossible to convert it to an actual gun because it only hits the operating pin which is coaxial with the base pin corresponding to the axis of the cylinder and does not hit the extension of the muzzle axis. It is.

It is necessary to replenish the gas tank of the gas pressure generating section appropriately with a gas liquid. However, an injection valve for replenishing the gas tank with the gas liquid is provided at the rear end side of the gas pressure generating section, and a pseudo valve is provided. This is made possible by forming a hole in the annular end plate on the rear side of the cylinder portion at a position that can face the injection valve.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the revolver air gun of the present invention will be described below in detail with reference to FIGS. First, FIG. 1A is a sectional view of an air gun according to the embodiment, and FIG. 1B is an enlarged sectional view of a cylinder. In FIG. 1 (A), 1 is a cylinder mounting frame portion of a gun body, 2 is a cylinder, 3 is a support portion of the gun body integrally formed with a grip portion 3a, a trigger guard, etc., 4 is a barrel, 5 is a base pin, 6 is a trigger, 7 is a hammer (however, the rotation axis 7 is
A spring for applying a torque around a is mounted (not shown), and a cam mechanism 8 (commonly called a “bolt”) stops rotation of the cylinder 2 in conjunction with operation of the trigger 6.

The main feature of this air gun is the cylinder
2 has a built-in gas pressure generation unit 30 in a rotary drum-shaped pseudo cylinder 20 having an appearance design similar to that of a real gun cylinder, and operates it with the rotation driving force of a hammer 7; The structure of the generator 30 is shown in FIG. The specific structure of each of the main components of the pseudo cylinder 20 and the gas pressure generating unit 30 is shown in FIGS.

In FIG. 1B, reference numeral 31 denotes a basic housing of the gas pressure generating unit 30 (see FIG. 2), and reference numeral 32 denotes a back cover of the basic housing 31 (FIG. 3).
Reference numeral 33 denotes a nozzle case (see FIG. 4) attached to the basic housing 31, reference numeral 34 denotes a firing nozzle provided with a seal ring 34a (see FIG. 5), and reference numeral 35 denotes an opening / closing valve provided with a seal ring 35a (see FIG. 6). Reference numerals 36 and 37 denote front and rear pins (see FIG. 7), respectively, and reference numeral 21 denotes a cylinder portion of the pseudo cylinder 20 (see FIG. 8).
Reference numeral 22 denotes a back cover of the pseudo cylinder 20 (see FIG. 9), reference numeral 23 denotes a bullet holding portion attached to the cylindrical body portion 21, reference numeral 38 denotes a front bearing, reference numeral 39 denotes a cap screw, and reference numeral 40 denotes a firing nozzle 34 rearward. A coil spring for urging, 41 is a coil spring for urging the open / close valve 35 rearward, 42 is a coil spring for urging the front pin 36 rearward, and each part is sealed in place to assemble the cylinder 2.

A coil spring 41, an opening / closing valve 35, a coil spring 42, and a rear pin are fitted in series in the gas pressure generating section 30 by combining the basic housing 31 and the back cover 32. A gas tank 51 is hermetically sealed around the middle cylinder portion 31a.
A hole 52 communicating with the nozzle case 33 side is provided in a portion corresponding to the intermediate section (small diameter portion) of 5, a coil spring 41 of the on-off valve 35.
A hole 53 communicating with the gas tank 51 is formed in a portion corresponding to the front side of the large-diameter portion biased by.

A gas pressure generator built in the pseudo cylinder 20
The entirety of the cylinder 30 is urged rearward by a coil spring 43 interposed between the front bearing 38 and the pseudo cylinder 20. The sleeve portion 22a formed on the back cover 32 of the gas pressure generating section 30 is supported by a sleeve portion 22a formed on the back cover 22.
The pseudo cylinder 20 is rotatable with respect to the gas pressure generating unit 30 by the shaft supporting structure. In the front end plate portion of the cylinder portion 21 of the pseudo cylinder 20, a feed hole 21a is formed at a position corresponding to the opening of the nozzle case 33 on the gas pressure generating portion 30 side. The bullet holding portion 23 is fitted via the ring 23a. In the cylinder 2, six bullet holes 21a are arranged concentrically, and a bullet holding portion 23 is fitted to each of the bullet holes 21a via an O-ring 23a.

Next, as shown in FIG.
Is mounted laterally in the cylinder mounting frame 1 of the gun body, and the front horizontal support portion is configured by fitting the base pin 5 into the front bearing 38 on the cylinder 2 side, and The support portion is formed by a protrusion 32b at the tip of a sleeve portion 32a formed on the back cover 32 of the gas pressure generating portion 30.
1 (C) [FIG. 1 (A)
XX], the two projecting pieces 32 are engaged with the grooves formed on the cylinder loading frame 1 side at the outer peripheral portion. Therefore, the rotation of the gas pressure generation unit 30 with respect to the cylinder loading frame unit 1 is restricted, and only the pseudo cylinder 20 rotates around the gas pressure generation unit 30. Further, as shown in FIG. 1A, when the hammer 7 is not pulled, the rear end face of the rear pin 37 which is fitted into and penetrates the hole of the cylinder mounting frame portion 1 has a light urging force of the coil spring 42. Is brought into contact with the hammer 7.

In the above configuration of the revolver type air gun, when the BB bullet 10 is pressed into the bullet feed holding portion 23 from the front of the cylinder 2 through the feed hole 21a of the pseudo cylinder 20, and the hammer 7 is pulled as shown in FIG. The engaging portion is locked by the cam mechanism 8, the rear pin 37 is slightly moved rearward by the urging force of the coil spring 42, and the flange portion is locked in the hole of the cylinder loading frame 1. . Where trigger 6
When the is pulled, the locked state of the hammer 7 is released and the hammer 7 is rotated forward, and as shown in FIG.
Striking the rear end face of the rear pin 37 protruding from the back of the rear panel. still,
The hammer 7 has a firing pin 7b, which is simulated and does not strike the back surface of the cylinder loading frame 1.

Back pin 37 struck by hammer 7
As shown in FIG. 12 (B), the impact force is transmitted to the coaxial front pin 36, and the front pin 36 is pushed forward against the urging force of the coil spring 42 rearward. Then, while compressing the coil spring 42, the front pin 36 strikes the rear sleeve portion of the opening / closing valve 35, and the opening / closing valve 35 is pushed rearward against the rearward biasing force of the coil spring 41. As a result, the normally-closed open / close valve 35 is opened by the urging force of the coil spring 41 and the gas pressure in the gas tank 51, and FIG.
As shown in (5), the high-pressure gas in the gas tank 51 blows out to the hole 52 communicating with the nozzle case 33 through the valve portion opened from the hole 53.

The high-pressure gas ejected from the gas tank 51 into the hole 52 immediately flows into the hole 33a in the nozzle case 33, instantaneously increases the pressure in the hole 33a, and pushes the nozzle 34 forward. Accordingly, the coil spring 40 that has urged the nozzle 34 rearward is compressed, and the + bar portion 34b formed in front of the nozzle 34 pushes out the BB bullet 10 of the bullet holding portion 23, while the high pressure on the nozzle case 33 side. Gas is blown out behind the BB bullet 10 and the BB bullet 10 is pushed at once to the barrel 4 side. Furthermore,
As shown in FIG. 14, the BB bullet 10 pushed out to the barrel 4 advances in the muzzle 4a at a stroke while being continuously pressed by the high-pressure gas, and is finally fired from the tip end of the muzzle 4a. Become.

On the other hand, the front pin 36 and the rear pin 37 are returned to their original positions by the urging force of the coil spring 42 rearward. When the above-described firing operation is completed, the pressure in the muzzle 4a and the pressure in the holes 33a and 52 sharply decreases, and the nozzle 34 and the opening and closing valve 35 are returned to their original positions by the urging forces of the coil springs 40 and 41, respectively.
It returns to the initial state shown in FIG. Thereafter, every time the hammer 7 is pulled, the pseudo cylinder 20 is rotated, the next bullet supply hole 21a and the bullet holding portion 23 are set in front of the nozzle case 33, and the BB bullet 10 is fired in the same operation procedure. Is executed.

When the firing operation is performed a number of times, the gas liquid stored in the gas tank 51 is consumed and the gas pressure required for firing cannot be supplied. In the air gun, a gas liquid inlet is provided on the back of the cylinder 2 so that the gas can be replenished. That is, the back cover 32 of the gas pressure generating unit 30 shown in FIG.
The screw hole 32c formed on the back of the pseudo cylinder 20 shown in FIG. 9 has a screw hole 32c formed on the back lid 22 of the pseudo cylinder 20 shown in FIG. As shown in FIG. 15 (rear view of the cylinder frame portion), the rotation of the pseudo cylinder 20 causes
The gas liquid injection valve 61 on the 30 side appears in the hole 22b of the pseudo cylinder 20, so that the gas liquid can be refilled and injected.

As described above, the revolver-type air gun according to this embodiment constitutes the cylinder 2 by incorporating the gas pressure generating unit 30 in the pseudo cylinder 20, and includes the gas tank 51 and the open / close valve in the gas pressure generating unit 30. Make up 35, hammer
The high pressure gas in the gas tank 51 is instantaneously supplied to the bullet holding section 23 side of the pseudo cylinder 20 by using the rotational force of FIG. Therefore, the gas passage from the gas tank 51 to the bullet holding portion 23 can be configured to be extremely short, and the volume of the gas passage can be suppressed inevitably to a small value. A powerful firing force can be obtained.

The rotation restricting mechanism of the gas pressure generating unit 30, the control mechanism of the opening / closing valve 35, and the drive transmission mechanism for the opening / closing valve 35 in the present embodiment are merely examples, and other various systems are also available. Can be adopted. For example, for the rotation restraining mechanism, a structure in which the gas pressure generating section is fixed to the cylinder loading frame side with a key or a screw may be adopted. A mechanism that operates by a mechanism can also be adopted, and a variety of drive transmission mechanisms for the on-off valve can be considered, such as applying a driving force to an operating pin by a cam mechanism linked to a trigger without using the rotating force of a hammer. . Furthermore,
In the present embodiment, the nozzle case 33 incorporating the nozzle 34 is provided behind the bullet holding portion 23, but a configuration in which the hole 52 corresponding to the gas passage is directly guided to the back of the bullet holding portion 23 may be used. Good.

[0026]

The revolver-type air gun of the present invention has the following effects by having the above configuration. According to the first aspect of the present invention, the gas passage between the gas tank and the bullet holding portion is configured to be extremely short and the passage volume is reduced.
It is possible to obtain a powerful projectile firing force without reducing the gas pressure, which is a problem peculiar to the revolver type air gun. Further, the structure of the cylinder of the present invention is essentially different from the cylinder of the actual gun, and the modification to the actual gun can be effectively prevented.
According to the second aspect of the present invention, the valve of the gas passage can be opened by utilizing the rotational force of the hammer, the mechanism is simplified, and the operation of the hammer and the timing of bullet firing are synchronized in a manner similar to that of an actual gun. To facilitate. The invention according to claim 3 makes it possible to configure a replenishing and injecting part of the gas liquid into the gas tank while minimizing a design resembling an actual gun.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view of a revolver air gun according to an embodiment, FIG. 1B is an enlarged cross-sectional view of a cylinder thereof, and FIG. 1C is a main part showing a rotation restraining mechanism of a gas generating unit with respect to a cylinder loading frame. FIG. 2 is a cross-sectional view taken along the line XX in FIG.

FIG. 2 is a left side view (A), a front sectional view (B), and a right side view (C) of a basic housing of the gas pressure generating unit.

FIG. 3 is a front sectional view (A), a right side view (B), and a main part sectional view (C) of a back cover of a gas pressure generating unit.

FIG. 4 is a left side view (A), a plan view (B), and a front view (C) of the nozzle case.

FIG. 5 is a left side view (A) and a front view (B) of the nozzle.

FIG. 6 is a front view of the on-off valve.

FIG. 7 is a front view (A) and a right side view (B) of a front pin, and a front view (C) and a right side view (D) of a rear pin.

FIGS. 8A and 8B are a front sectional view (A) and a right side view (B) of a cylinder portion of the pseudo cylinder.

FIG. 9 is a front view (A) and a right side view of the back cover of the pseudo cylinder.
(B).

FIG. 10 is a left side view (A) and a front view (B) of the bullet holding unit.

FIG. 11 is a cross-sectional view of the revolver-type air gun with the hammer pulled out.

FIG. 12A is a cross-sectional view of the revolver air gun immediately after the rotation of the hammer, and FIG. 12B is an enlarged cross-sectional view showing the operation state of the cylinder at that time.

FIG. 13 is an enlarged sectional view showing an operation state of a cylinder when an on-off valve of a gas tank is opened.

FIG. 14 is a cross-sectional view of the revolver air gun showing a state at the time of bullet firing.

FIG. 15 is a rear view of a cylinder loading frame portion of the revolver air gun.

FIG. 16 is a cross-sectional view showing a bullet firing mechanism in a conventional revolver air gun.

[Explanation of symbols]

1 ... Cylinder loading frame, 2 ... Cylinder, 3 ... Gun body support, 3a ... Grip, 4 ... Barrel, 4a ... Muzzle, 5 ... Base pin, 6 ... Trigger, 7 ... Hammer, 7a ... Hammer rotation axis,
7b: firing pin, 8: cam mechanism, 10: BB bullet, 20: cylinder, 2
1 ... cylinder part of pseudo cylinder, 21a ... feeding hole, 22 ... back lid of pseudo cylinder, 22a ... sleeve part, 22b ... hole, 23 ... bullet holding part, 23a ... O-ring, 30 ... gas pressure generating part, 31: Basic housing of gas pressure generating part, 31a: Middle cylinder part, 32: Back cover of gas pressure generating part, 32a: Sleeve part, 32b: Projection piece, 32c: Screw hole, 33: Nozzle case, 33a: Hole , 34… Nozzle, 34a… Seal ring, 34b… + rod, 35… Open / close valve, 35a… Seal ring, 36… Front pin, 37… Rear pin, 38… Front bearing, 39… Cap screw, 40… Coil spring, 41 ... coil spring, 42 ... coil spring, 43 ... coil spring, 51 ... gas tank, 52 ... hole, 53 ... hole, 61 ... gas liquid injection valve, 101 ... grip part, 102 ... gas cylinder, 102a ... valve, 103 ... cylinder, 104 ... Gas passage, 105 ... trigger, 106 ... hammer, 1
07 ... Cam, 108 ... Simulated cartridge, 109 ... BB bullet, 110
…muzzle.

Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F41B 11/06 F41B 11/12 F41B 11/26

Claims (3)

(57) [Claims] In a revolver-type air gun, a housing is suspended inside a cylinder loading frame along an axial direction of a base pin, and a sleeve protruding in the axial direction is provided at a rear lateral support portion of the gun body. A gas pressure generating portion which is fitted in a through hole formed in the cylinder loading frame and has a rotation restraining mechanism provided on one or both of the horizontal support portions; A drum that covers the portion and rotates about the axis of the base pin. The muzzle interlocks with the bullet supply hole drilled concentrically in the front annular end plate and the bullet holding portion inside it in response to the operation of the trigger. A cylinder is constituted by a pseudo cylinder portion sequentially opposed to the position, a gas tank, a gas passage leading from the gas tank to the back of the bullet holding portion of the pseudo cylinder, and a gas passage in the housing of the gas pressure generating portion, Through the gas passage A built-in valve, an operating pin that fits inside the sleeve of a rear horizontal support portion and slides, and a valve control mechanism that instantaneously opens the valve based on the driving of the operating pin, and performs a firing operation. A revolver-type air gun provided with a drive transmission mechanism for driving the operating pin in the opening control direction of the valve in conjunction with. 2. An operating pin of the gas pressure generating section is urged rearward by a spring, and the drive transmission mechanism strikes the operating pin with a rotating force of a hammer based on a firing operation of a trigger. The revolver air gun according to claim 1. 3. An injection valve for refilling a gas tank with a gas liquid is provided on a rear end face side of the gas pressure generating section, and a hole is provided at a position in the annular end plate on the rear side of the pseudo cylinder section which can face the injection valve. The revolver-type air gun according to claim 1 or 2, wherein the air gun is provided.