WO2007122719A1

WO2007122719A1 - Compressed air control device of air gun

Info

Publication number: WO2007122719A1
Application number: PCT/JP2006/308380
Authority: WO
Inventors: Tatsuo Iwasawa
Original assignee: Tokyo Marui Co, Ltd.
Priority date: 2006-04-14
Filing date: 2006-04-14
Publication date: 2007-11-01
Also published as: TW200739024A

Abstract

A bullet shot is given a necessary power without using a strong spring in an air gun in which the movable part of a piston/cylinder device is driven by a power source such as a motor. In the air gun which has the piston/cylinder device installed in the gun body and in which the air is compressed by the forward movement of the movable part, a bullet on the jetting axis of the compressed air so that the bullet can be shot, the bullet (B) supplied is disposed at the loading position (17) on the jetting axis of the compressed air when the movable member (14) is moved backward. To jet the compressed air to the loading position, a shooting nozzle (20) is fitted to the fixed member (13) of the piston/cylinder device (12) slidably in the longitudinal direction. A compressed air control device comprises a drive mechanism (21) for compressing the air by forwardly moving the movable member (14) of the piston/cylinder device (12) and a return spring (22) for returning the forward moved movable member (14) to the original position. A valve mechanism (35) opened when the movable member (14) is moved forward and the pressure in the piston/cylinder device (12) is increased is fitted to the shooting nozzle (20).

Description

Technical field of compressed air control device for air gun

The present invention has a piston cylinder device provided in a gun body, compresses air by advancing a movable member thereof, loads a bullet on an injection shaft of the compressed air, and enables the firing of the compressed air in the gun. The present invention relates to a control device. Background art

A gun using compressed air, which is also called an electric gun, an electric air gun, a soft air gun, or a quasi-air gun, has been conventionally known. This type of gun is, for example,

6— 2 3 5 5 9 As described in No. 7, the drive gear is driven by a drive mechanism that uses Moyuichi as a power source, and the piston is moved back through the rack by the drive gear. When the piston is accumulated and the piston reaches the retreat limit, the rack and the drive gear are disengaged, and the piston is rapidly moved forward by the spring force of the accumulated spring to generate compressed air. ing.

In other words, conventional air guns require a powerful spring burst to obtain compressed air at the pressure required to fire a bullet. This means that the higher the pressure required for compressed air, the more powerful springs are required. In order to accumulate such a strong spring, in the case of a single drive, a heavy load is applied to the motor, gear mechanism, battery, etc. Even if a high performance one is used, It was pointed out that durability was difficult. In addition, the high meshing pressure between the drive gear and the rack has caused the problem that only high-strength metal materials such as stainless gears can be used, resulting in high price and high noise.

On the other hand, when the driving mechanism of the air cylinder device is constituted by a solenoid as in the invention of Japanese Patent Laid-Open No. Hei 3-19 1 2 98, the above problem does not occur, but it can be obtained. There is a limit to the pressure of compressed air. In addition, because the cylinder and nozzle are integrated, the whole will move back and forth each time the bullet is fed, and the valve is closed by a spring that is large in loss or greater than the generated pressure. Need. Further, it is considered that a mechanism capable of projecting bullets can be configured even if the biston is compressed and driven by using the power source as a power source, as in the invention of Japanese Patent Laid-Open No. 6-13737. In this case, in order to return the piston to the original position by the return spring, the drive force of the motor is used for accumulating the return spring. However, the elasticity of the return spring is sufficient if the piston can be returned. It doesn't have to be particularly powerful. Therefore, it is considered that the durability is remarkably improved as compared with the conventional drive system that requires the spring force of the spring to obtain compressed air.

However, the latter method disclosed in Japanese Patent Application Laid-Open No. 6-1 3 7 7 90 cannot easily generate high-pressure compressed air. For example, even if the contents described in the specification of Japanese Patent Application Laid-Open No. 6-1 3 7 7 90 are implemented, the pressure that can be obtained is limited. For this reason, bullets fired with electric guns using the latter method are not as powerful as conventional air guns that use powerful springs, and this type of product has not yet been offered to the market. Further, in the case of Japanese Patent Laid-Open No. 6-1 3 7 7 90, there are problems such as the crank gear has many restrictions on the layout of components, and the unit is large because the valve is provided separately from the piston. There is also. Disclosure of the invention.

The present invention has been made paying attention to the above points, and the problem is that in an air gun of a type that drives a movable member of a piston cylinder unit using an electric motor or the like as a power source. The aim is to give the fired bullet the power it needs without using a powerful spring. Another object of the present invention is to provide a control device for compressed air in an air gun that has good durability, can be manufactured at low cost, and has a quiet operating sound. In order to solve the above-described problems, the present invention has a piston cylinder device provided in a gun body, compresses air by advancing the movable member, and loads a bullet on an injection shaft of the generated compressed air. In the air gun that enables firing, the supplied bullet is placed at the loading position on the injection shaft of the compressed air when the movable member moves backward, and then the compressed air is injected toward the loading position. The firing nozzle provided on the fixed member of the cylinder device is slidable in the front-rear direction, the drive mechanism for compressing the air by moving the movable member of the piston cylinder device forward, and the advanced movable member is returned to the original position. The launch nozzle has a valve mechanism that opens when the movable member moves forward and the pressure inside the piston cylinder device increases. It is intended.

The air gun in the present invention includes all of the so-called electric gun, electric air gun, air soft gun, or quasi-air gun as described above. The air gun according to the present invention will be described mainly with an electric gun using a motor, but it is not limited to electric power, and as illustrated, it can be sufficiently implemented by manual human drive. . In the present invention, the piston cylinder device that generates compressed air generally has the piston on the movable side and the cylinder on the fixed side, but the piston may be on the fixed side and the cylinder on the movable side. obtain. Therefore, it is only necessary to distinguish one of the piston and the cylinder as a movable member and the other as a fixed member. The apparatus of the present invention can also be implemented using a compressed air generating apparatus other than the piston / cylinder apparatus, such as a bellows apparatus or a bellows apparatus.

-In general, the piston-cylinder device can be constructed as a cylinder fixed to the gun body and a viston slidably mounted on it. In this case as well, the return spring that returns the piston, which is the movable member that has advanced, to the original position can be set to either a tension spring that accumulates pressure due to the advance of the movable member or a compression spring. That is, since the return spring returns the movable member to the original position, the return spring can be set so as to pull or compress the movable member.

An air gun targeted by the present invention has a configuration in which a bullet is loaded on a jet shaft of compressed air to enable firing. For this reason, bullet loading and compressed air generation are linked. And unlike conventional electric guns, it is configured so that bullets are loaded only by the forward and backward movement of the firing nozzle without using special members such as pet arms for loading testicles. It should be. When a bullet is loaded, it is fixed at that position (loading position) with a certain limited force, and compressed air exceeding this fixed force is injected toward the bullet, thereby firing the bullet.

The firing nozzle has a function for arranging the bullet to be supplied at the loading position on the jet shaft of the compressed air when the movable member moves backward, and then jetting the compressed air toward the loading position. More specifically, the function of guiding the bullet in a pre-supplied state onto the injection axis of the compressed air by retreating the firing nozzle, pushing the bullet by advancement, and placing it at the loading position. Have. Therefore, the firing nozzle is provided so as to be slidable in the front-rear direction with respect to the fixed member of the piston cylinder unit.

The apparatus for controlling compressed air according to the present invention includes a drive mechanism for advancing the movable member to compress the air, and a return spring for moving the movable member back to the original position. In other words, the drive mechanism is used for advancing the movable member, and the elasticity of returning the movable member to the original position is not limited to a particularly strong force as long as it can return the biston. The drive mechanism meshes with a rack provided on the movable member, advances the movable member, releases the above-mentioned meshing at the forward limit, and leaves the sector one gear under the force of the return spring, and this sector one An electric drive mechanism having a motor for driving a gear is one form in the present invention. Therefore, the sector 1 gear generates compressed air in one rotation. For this reason, the sector one gear has a toothed portion formed of a tooth row that meshes with the rack as in the conventional one, and a toothless portion that deviates from the meshing with the rack.

In another aspect of the present invention, the drive mechanism is engaged with an engaging portion provided on the movable member, the movable member is advanced, the engagement is released at the advance limit, and the force of the return spring is applied. This is a manual drive mechanism having a lever to be entrusted and a trigger for driving the lever. With this configuration, the device of the present invention has room for operation without using electric power.

The firing nozzle is provided with a valve mechanism that opens when the movable member moves forward and the pressure inside the piston cylinder device increases. The valve mechanism accumulates the pressure inside the piston cylinder device that increases as the movable member moves forward, and when the pressure inside the piston cylinder device reaches the set pressure, the valve member is opened by the advancement of the movable member. , It has the function of injecting compressed air at once from the firing nozzle. About set pressure

Even if the absolute value of X h pa is not specified, it may be understood as a pressure within a range where the object of the present invention can be achieved.

'The valve mechanism is located inside the piston cylinder device and is provided at the rear end of the firing nozzle so as to be movable forward and backward, a valve spring that urges the movement valve in the valve closing direction, and a piston cylinder. It is desirable to have the rear end portion of the firing nozzle and the valve opening provided in the moving valve so that they coincide with each other when the pressure inside the device reaches the set pressure. The valve spring may act to push the moving valve, or it may act to pull it, and both can be implemented.

In one example, the valve mechanism is provided at the rear end of the firing nozzle located inside the piston cylinder device, and the firing nozzle is loaded with testicles as the movable member advances and the pressure inside the piston cylinder device increases. It has a pressure receiving part that can move forward to the hour position. In another example, the valve mechanism moves forward with the advance of the movable member, and when the pressure inside the piston cylinder device reaches a set pressure, the valve mechanism reaches a huge part in the firing nozzle and opens the sliding valve. Have. In this way, the valve mechanism withstands until the pressure inside the piston cylinder device reaches the set pressure, and when the set pressure is reached, the compressed air of that pressure is injected from the tip of the firing nozzle.

In the Biston cylinder device, an intake valve can be provided to suck air into the cylinder as the movable member moves forward. The intake valve has a seal member provided in the movable member, an attachment portion thereof, and an intake port formed in the attachment portion. When the movable member moves forward, the intake port is closed by the seal member, and the movable member moves backward. Sometimes the seal member is displaced and the intake port is opened, or the seal member is deformed by the retreat of the movable member, and a gap is formed between the inner wall of the cylinder and the intake is made. desirable. Furthermore, the piston cylinder unit has a seal member that can open and close the intake port and the intake port at the front end of the cylinder as an intake valve in order to suck air into the cylinder by the advance of the movable member. In addition, the seal member is deformed by the retreat of the movable member, the intake port is opened, and a configuration for intake can be added. Since the present invention is configured and operates as described above, it is required for a bullet to be fired in an air gun that drives a movable member of a Biston cylinder unit using an electric motor as a power source. The compressed air generated by the drive mechanism is not generated by the elastic force of the compression spring, so it is no longer necessary to use the power of the drive mechanism for accumulating a strong compression spring as in the past. Or the gear mechanism, battery, etc. This reduces the burden, eliminates the problem of durability even without using a high-performance one, and produces the effect of generating compressed air that provides the necessary power. In addition, according to the present invention, it is possible to provide a low-priced device having good durability, and a quiet operation sound can be obtained without using high-performance components. Brief Description of Drawings

FIG. 1 is an explanatory view of the inside of an air gun, showing Example 1 of a control device for compressed air in an air gun according to the present invention.

Fig. 2 illustrates the operation of Example 1 shown in Fig. 1, where A is the state where the biston starts moving forward, B is the state where the push pin is in contact with the firing nozzle, and C is the state where the bullet is pushed by the firing nozzle. Illustration.

Fig. 3 shows the operation following Fig. 2. A is the state in which the push pin starts to retract, B is the state in which the valve mechanism is opened and the bullet is fired, and C is the state in which the biston is returned to the original position. Each explanatory figure.

FIG. 4 shows an intake valve applicable to the present invention, in which A is a first modification and B is a cross-sectional view showing a second modification.

FIG. 5 is an explanatory view of the inside of the air gun, showing Example 2 of the control device for compressed air in the air gun according to the present invention.

FIG. 6 is an explanatory diagram of the inside of the air gun showing Example 3 of the control device for compressed air in the air gun according to the present invention.

Fig. 7 illustrates the operation of Example 3 shown in Fig. 6. A is the state where the push pin is in contact with the Biston side, B is the state where the bullet is pushed by the firing nozzle, C is the valve mechanism opened and the bullet is fired Each explanatory view showing the state made.

FIG. 8 is an explanatory diagram of the inside of the air gun, showing Example 4 of the control device for compressed air in the air gun according to the present invention.

Fig. 9 illustrates the operation of Example 4 shown in Fig. 8, where A is the state in which the piston has started moving forward, B is the state in which the pressure-receiving unit has started moving, and C is the state in which the bullet is pushed by the firing nozzle. Illustration.

FIG. 10 shows the operation following FIG. 9, where A is a state in which the internal pressure reaches the maximum value, and B is an explanatory view showing a state in which the valve mechanism is opened and a bullet is fired.

FIG. 11 is an explanatory view of the inside of an air gun, showing Example 5 of a control device for compressed air in the air gun according to the present invention. ,

FIG. 12 illustrates the operation of Example 5 shown in FIG. 11. A is a diagram illustrating a state in which the biston has started moving forward, and B is a diagram illustrating a state in which the valve shaft is moving within the firing nozzle.

FIG. 13 shows the operation following FIG. 12. FIG. 13A is an explanatory view showing a state in which the pressure receiving portion starts moving, and B is a state in which a valve mechanism is opened and a bullet is fired.

FIG. 14 is an explanatory view of the inside of the air gun, showing Example 6 of a control device for compressed air in the air gun according to the present invention.

Fig. 15 illustrates the operation of Example 6 shown in Fig. 14. A is the state where the piston starts moving forward, B is the state where the push pin is in contact with the firing nozzle, and C is the state where the bullet is pushed by the firing nozzle. Each explanatory drawing of a state.

Fig. 16 shows the operation after Fig. 15. A is the state where the push pin starts to retract, B is the state where the valve mechanism is opened and the bullet is fired, and C is the piston returns to the original position Each explanatory drawing of a state. Explanation of symbols

1 0 Control device for compressed air in air gun

1 1 Gun body 1 2 Piston cylinder device

1 3, 1 3, 1 3 cylinder

1 4, 1 4, 1 4

1 5 Injection shaft

1 6 barrel

1 7 Loading W

1 8 Bullet supply section

1 9 Stop section

2 0, 5 0, 6 0 Firing nozzle

2 1 Drive mechanism

2 2 Return spring

2 3 racks

2 4 Sector 1 gear

2 5 Motor

2 6 Toothed part

2 7 Toothless part

2 8, 7 5 Trigger

2 9, 3 9 Sealing part for airtightness

3 0 switch

3 1, 5 1 Large part

3 2, 5 2 Vent

3 3, 5 3 Nozzle

3 5, 5 5, 6 5 Valve mechanism

3 6, 5 6 Movement valve

3 7 Valve spring

3 8, 5 8 Valve port

4 0 Nozzle pressing part

4 1 Push pin

4 2 Push spring

4 3 Intake valve

4 4, 4 6, 4 9 Seal member

4 5, 4 8 Air intake

4 7 Clearance

5 4, 6 4 Pressure sensor

5 7--1, 5 7-2 Press spring

6 1 Rear end opening

7 0 Manual drive mechanism

7 1 Engagement part

7 2 Engagement end

7 3 Lever

7 4 Support shaft BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. 1 to 3 show Example 1 of a compressed air control device 10 in an air gun according to the present invention. In the case of Example 1, in the piston cylinder device 1 2 provided in the gun body 1 1, the cylinder 13 is a fixed member and the piston 14 is a movable member. As air is compressed by the advance of piston 14 that is a movable member, the shaft of piston cylinder device 1 2 The bullet B is loaded in the compressed air injection shaft 15 set on the extension of the line so that it can fire from the barrel 16 set on the coaxial line. The air injection shaft 15 is connected to the front end of the cylinder 1 3, the bullet B loading position 1 7 is set inside, and the bullet supply unit 1 8 is connected just before that. Between the loading position 17 of the bullet B and the bullet supply section 18, there is provided a stop section 19 that comes into contact with the front end when the firing nozzle 20 described later is advanced.

The control device of the present invention has a drive mechanism 21 for advancing a piston 14 which is a movable member to compress air, and a return spring 2 2 for returning the advanced biston 14 to its original position. Yes. The return spring 2 2 in Example 1 consists of a tension spring, with one end 2 2 a hanging on the piston 14 and the other end 2 2 b hanging on the gun body. Since the drive mechanism 21 is used to move the piston 14 forward, the repulsive force of the spring that returns the piston 14 to the original position only needs to return the piston. The drive mechanism 2 1 of Example 1 meshes with the rack 2 3 installed on the piston 14, moves the piston 14 forward, releases the above mesh at the forward limit, and is under the force of the return spring. This is an electric drive mechanism having a sector one gear 24 to be entrusted and a motor 25 for driving the sector one gear 24. Sector 1 gear 2 4 advances piston 14 to the forward limit in one revolution, and generates compressed air. The sector one gear 24 for this purpose has a toothed portion 26 made of a tooth row that meshes with the rack 2 3 and a toothless portion 2 7 that comes off the mesh with the rack 2 3. The rotation of the motor 25 is transmitted to the sector gear 24 via the reduction gear set. In addition, the motor 25 is controlled on and off by a switch 30 operated by a trigger 28.

The aforementioned firing nozzle 20 is provided so as to be slidable in the front-rear direction with respect to the cylinder 13 which is a fixing member of the biston cylinder device 12. The firing nozzle 20 places the supplied bullet B at the loading position 17 on the injection shaft of the compressed air when the piston 14 is retracted, and then directs the compressed air to the loading position. It has a function to inject. Therefore, the bullet B is guided from the side bullet supply section 18 by the retraction of the firing nozzle 20 onto the contraction air injection shaft, pushed by the advance, and fixedly placed at the loading position 17 Is done. The firing nozzle 20 in Example 1 has a cylindrical shape, and is connected to the inside of the cylinder 1 3 by the vent 3 2 provided on the side surface of the rear large portion 3 1, and the cylinder 1 at the cylindrical portion 1 3 is inserted into the hole at the front end so as to be slidable in an airtight manner, and the opening at the front end which becomes the nozzle port 33 is disposed on the injection shaft 15 in front of the cylinder.

The firing nozzle 20 is provided with a valve mechanism 35 that opens when the piston 14 advances and the pressure inside the piston cylinder device 12 increases. The valve mechanism 35 accumulates the pressure inside the piston cylinder device that increases as the piston 14 moves forward.When the pressure inside the piston cylinder device reaches the set pressure, the valve mechanism 35 opens as the piston 14 moves forward. A moving valve 3 6 located inside the piston cylinder device, which is located inside the piston cylinder device, and provided in the large portion 3 1 at the rear end of the firing nozzle 20 so as to be airtightly slidable in the front-rear direction and the moving valve 3 A valve spring 3 that urges 6 in the valve closing direction, and a moving valve so that when the pressure inside the piston cylinder unit reaches the set pressure, it matches the vent 3 2 of the firing nozzle 20 It has a valve port 3 8 provided in 3 6. The valve spring 37 acts on the moving valve 36 to push it backward. Reference numerals 29 and 39 indicate seal parts for maintaining airtightness.

In Example 1, the valve mechanism 35 has a nozzle pressing unit 40 as a means for opening the valve when the internal pressure of the piston cylinder unit 12 increases as the piston 14 advances. ing. The nozzle pressing portion 40 has a push pin 41 that contacts the large portion 31 at the rear end of the firing nozzle 20 and a push spring 42 that pushes the push pin 41 forward. The spring force of the push spring 4 2 is set to be stronger than the spring force of the valve mechanism 3 5 on which it acts, and when the firing nozzle 2 0 moves forward, the front end moves to the stop 19 It is compressed by contact.

The piston / cylinder unit 1 2 has a cylinder that is driven by the advancement of the piston 1 4. An intake valve 4 3 is provided for intake inside. The intake valve 4 3 in Example 1 has a seal member 4 4 provided on the piston 1 4 and an intake port 4 5 formed in the mounting portion thereof. When the piston 1 4 moves forward, the intake port is moved by the seal member 4 4. When 4 5 is closed and the piston 14 is retracted, the seal member 4 4 is displaced and the intake port 4 5 is opened. Further, as shown in FIG. 4B, the seal member 4 6 is deformed by the retreat of the piston 14 and a gap 4 7 is formed between the inner wall of the cylinder and sucked, or As shown in Fig. 4 A and B, the intake port 4 8 and the intake port 4 8 can be opened and closed at the front end of the cylinder as an intake valve for sucking air into the cylinder as the piston 14 advances. It is assumed that the seal member 4 9 is provided, and the piston 14 can be retracted to deform the seal member 4 9, and the intake port 48 can be opened to add air intake.

The operation of the compressed air control apparatus of the present invention having such a configuration will be described with reference to FIGS. When trigger 28 is pulled, switch 30 is turned on and motor 25 1 is activated, sector gear 2 24 rotates clockwise, and toothed part 26 is connected to rack 14 of piston 14 The pistons 14 start to move forward (Fig. 2 A). As the piston 1 4 advances, the internal pressure of the cylinder 1 3 increases, and the push pin 4 1 that moves forward with the piston 1 4 comes into contact with the large portion 3 1 at the rear end of the firing nozzle 2 0, thereby causing the firing nozzle. 20 begins to advance (Figure 2B). As the piston 14 further advances, the firing nozzle 20 also moves forward, contacts the bullet B on the air injection shaft 15 (Fig. 2C), pushes out to the loading position 17 and the firing nozzle 20 is The nozzle port 3 3 comes into contact with the stop portion 19 and stops (FIG. 3A).

When the firing nozzle 2 0 stops moving forward, the push pin 4 1 compresses the push spring 4 2, and the front end of the piston 1 4 comes into contact with the moving valve 3 6, and the spring 3 7 is compressed. It begins to be buried in the recess 14a of the piston 14 containing the push pin 41 and the push spring 42 (Fig. 3A). In this state, the nozzle port 33 at the tip of the firing nozzle is brought into an airtight connection state by contacting the stop portion 19. When the advance of piston 1 4 approaches the final state, moving valve 3 6 moves forward, and vent 3 2 and valve 3 8 overlap, compression in cylinder 1 3 reaches the maximum value of internal pressure. Air is instantaneously injected from the nozzle port 33, and the testicle B is fired (Fig. 3B). Then, the rack 23 of the piston 14 disengages from the toothed portion 26 of the sector one gear 24 and reaches the toothless portion 27. After firing the bullet, when the internal pressure of the piston cylinder unit 1 2 drops, outside air flows from the intake port 4 5, and the pressure difference between the inside and outside begins to disappear, and the piston is pulled back by the return spring 2 2. (Fig. 3C) and return to the state before the launch operation.

In the present invention, the return spring for returning the viston 14 to the original position is not limited to the tension spring as in Example 1, but may be a compression spring. Therefore, a modified example of Example 1 in which the return spring is configured by a compression spring will be described with reference to FIG. 5 as Example 2 of the compressed air control device 10 of the present invention. The return spring 2 2 ′ constituted by a compression spring has one end 2 2 ′ abutting against the front end of the cylinder — 1 3 and the other end 2 2 ′ abutting against the front end of the piston 14. The rest of the configuration can be exactly the same as in Example 1. Therefore, the code of Example 1 is used as it is, and detailed description thereof is omitted, but the operation is exactly the same as described above except that the force acting on the piston is replaced by the compression spring.

In the compressed air control device for an air gun according to the present invention shown in Example 1, the push pin 41 and the push spring 42 can be provided not on the biston 14 but on the side of the firing nozzle. An example 3 of the compressed air control device 10 of the present invention will be described with reference to FIGS. In the compressed air control device of Example 3, the large part 3 1 at the rear end of the firing nozzle 2 0 in Example 1 is extended backward, and the concave part 3 1 for accommodating the push pin 4 1 and the push spring 4 2. a is provided. In the same way as in Example 1, the front end of the piston 14 is also provided with a recess .1 4 a, which accepts the tip (rear end) of the push pin 4 1 projecting rearward and provides the necessary compression stroke. I am able to earn. For other configurations, Since it may be the same as that of Example 1 including the strength of the thread, the reference numerals of Example 1 are also applied to FIGS. 6 and 7 and the detailed description is omitted.

Therefore, the operation of Example 3 is not different from that of Example 1, but will be described with reference to FIG. Trigger 2 8 is pulled, switch 3 0 is turned on, motor 2 5 is activated, and sector 1 gear 2 4 is rotated, so that toothed part 2 6 is swollen with rack 2 3 of piston 1 4 As a result, the piston 14 starts to advance, and the pressure inside the cylinder 1 3 increases accordingly, and the push pin 41 contacts the bottom of the recess 14 a (FIG. 7A). The firing nozzle 20 moves forward together with the piston 14, contacts the bullet B on the air injection shaft 15 (FIG. 7B), and pushes out to the loading position 17. By the forward stop of the firing nozzle 20, the push pin 4 1 is in a state of compressing the push spring 4 2. Furthermore, when the front end of the piston 1 4 comes into contact with the transfer valve 3 6 and compresses the push spring 4 2, when the advance of the piston 1 4 approaches the final state, the transfer valve 3 6 moves forward, and the vent 3 2 The compressed air in the cylinder 13 that has reached the maximum value due to the overlap of the valve ports 3 8 is instantaneously injected from the nozzle ports 33 and fires the testicle B (Fig. 7C).

Further, Example 4 of the compressed air control device 10 of the present invention will be described with reference to FIG. 8, FIG. 9, and FIG. Example 4 has a configuration in which the firing nozzle 50 can be advanced by the pressure inside the cylinder 1 3 ′ without interposing a member such as the conventional push pin 41. The valve mechanism 55 in Example 4 has a pressure receiving portion 54 at the rear end of the firing nozzle 50 located inside the piston cylinder unit 12 at the front of the large portion 51. The pressure receiving part 5 4 in Example 4 is a kind of biston in which the seal part 5 9 on the outer periphery slides on the inner surface of a cylindrical cylinder 1 3 ′ whose front and rear are opened. As' is advanced and the internal pressure of the piston cylinder increases, the firing nozzle 50 is advanced to the position where the nozzle port 53 at its tip is loaded with a bullet.

The pressure receiving part 5 4 includes a moving spring 5 6 slidably provided on the large part 51 at the rear end of the firing nozzle 50 and a pressure spring 5 7— 1 and a pressure spring 5 7-2 which is interposed between the pressure receiving portion 54 and the gun body and acts on the pressure receiving portion 5 to push the firing nozzle 50 backward. The vent 52 is provided in the large portion 51 of the firing nozzle 50 and overlaps with the valve 38 provided in the moving valve 56. In addition, since the other configuration may be the same as that of Example 1, the reference numerals are used and the detailed description is omitted.

The operation of Example 4 will be described with reference to FIG. 9 and FIG. In this case as well, when trigger 2 8 is pulled, switch 30 is turned on, motor 25 1 is activated, and rotation of sector 1 gear 2 4 causes toothed part 2 6 to become the rack of piston 14 4 ′. The piston 14 begins to move forward, and the pressure inside the cylinder 1 3 'increases accordingly (Fig. 9

A). As the piston 14 'moves forward, the pressure inside the cylinder increases, the push spring 5 7-2 compresses and the firing nozzle 50 starts moving forward (Fig. 9B) and is on the air injection shaft 15 Touch bullet B (Fig. 9C) and push it out to loading position 17; The forward movement of the firing nozzle 20 stops, and the piston 14 'comes into contact with the moving valve 56 and compresses the push spring 57-1 (Fig. 10A). Furthermore, when the forward movement of the piston 1 4 ′ approaches the final state, the moving valve 5 6 moves forward, the vent 5 2 and the valve 5 8 overlap, and the cylinder 1 3 reaches the maximum value.

'Compressed air inside is instantaneously ejected from nozzle port 5 3 and fires bullet B (Fig. 10)

B).

Furthermore, Example 5 of the control device for compressed air according to the present invention will be described with reference to FIG. 11, FIG. 12, and FIG. The valve mechanism 65 in Example 5 moves forward with the advancement of the piston 14 4 ", which is a movable member. When the pressure inside the piston cylinder device reaches the set pressure, it reaches the enormous part in the firing nozzle and is open. In other words, the firing nozzle 60 in the device of Example 5 is a long pipe that passes through the front and back, and at the rear end, as in Example 4, Cylindrical cylinder with open front and back 1 A type of piston that slides on the inner surface of 3〃 A pressure receiving portion 64 is provided, and an enormous portion 6 6 is provided at the front portion arranged outside the cylinder 13.

A valve spring 6 7 is arranged between the pressure receiving part 64 and the wall surface in front of the cylinder. The rear end opening 61 of the firing nozzle 60 has a valve shaft attached to the front end of the piston 14 6 2 is slidably inserted. The valve spring 67 is compressed when the internal pressure of the piston cylinder unit 12 rises to a set value, and advances the firing nozzle 60. Further, seal portions 6 8 and 69 are provided on the periphery of the valve shaft 62 and on the outer periphery of the pressure receiving portion 64. Other configurations may be the same as those in Example 1, so that reference numerals are used and detailed description is omitted.

The operation of Example 5 will be described with reference to Figs. When trigger 2 8 is pulled and switch 3 0 is turned on, motor 2 5 is activated, and by rotating sector 1 gear 2 4, toothed part 2 6 meshes with rack 2 3 of piston 1 4 " 14 "begins to advance (Fig. 12 A). Along with this, the pressure inside the cylinder 13 3〃 increases, and the valve shaft 6 2 starts to move forward inside the firing nozzle 60 (Fig. 12B), and the nozzle at the front end of the firing nozzle 60 6 3 moves forward, contacts bullet B on air injection shaft 15 and pushes it to loading position 17 (Fig. 13 A). After the forward movement of the firing nozzle 60 stops, the piston 14 4 advances further, and when the valve shaft 6 2 reaches the enormous portion 6 6, the rear end opening 6 1 of the firing nozzle 60 is opened. The compressed air in the cylinder 1 3〃 that has reached the maximum value is instantaneously injected from the nozzle port 3 3 through the inside of the firing nozzle 60 and fires bullet B (Fig. 1). 3 B).

As one form of the drive mechanism in the apparatus of the present invention, it engages with an engaging portion provided on the movable member, advances the movable member, releases the above-mentioned engagement at the forward limit, and under the force of the return spring As described above, it is possible to employ a manual drive mechanism that has a lever that is entrusted to and a trigger that drives the lever. Thus, Example 6 with a manual drive mechanism will be described with reference to FIG. In Example 6, the manual drive mechanism 70 has an engagement end 7 2 provided with an engagement portion 71 at the rear portion of the piston 14 and combined to engage with the rear portion of the engagement portion 71. The lever 7 3 is attached to the gun body 11 by the support shaft 7 4, and the trigger 75 is provided at the lower end of the lever. The torque and stroke to pull the trigger 7 5 can be set to the optimum state in order to obtain the compressed air with the required pressure by the piston 14, and the lever 7 3 has a stopper that defines the forward limit. Can be provided. Other configurations may be the same as those in Example 1, so that reference numerals are used and detailed description is omitted.

The effect in Example 6 is exactly the same as in Example 1, except for the differences due to the drive mechanism. To illustrate this, the action of Example 6 will be described with reference to FIGS. 15 and 16. When the trigger 75 is pulled and the engagement end 72 pushes the engagement portion 71 forward, the forward movement of the piston 14 starts (Fig. 15A). As the piston 1 4 moves forward, the pressure inside the cylinder 1 3 increases, and the push pin 4 1 that moves forward with the piston 1 4 comes into contact with the large portion 3 1 at the rear end of the firing nozzle 2 0, thereby firing. Nozzle 20 starts moving forward (Fig. 15 B). Further, as the piston 14 advances, the firing nozzle 20 also moves forward, contacts the bullet B on the air injection shaft 15 (Fig. 15 C), pushes out to the loading position 17 and the firing nozzle 20 is The nozzle port 3 3 comes into contact with the stop portion 19 and stops (FIG. 16A). At this stage, the nozzle port 33 at the tip of the ejection nozzle is in an airtight connection with the stop 19.

When the firing nozzle 2 0 stops moving forward, the push pin 4 1 is in a state of compressing the push spring 4 2, and the front end of the piston 1 4 contacts the moving valve 3 6 and the valve spring 3 7 starts to compress. Therefore, it is buried in the recess 1 4 a of the piston 1 4 containing the push pin 4 1 and the push spring 4 2. When piston 1 4 moves forward to the final state, moving valve 3 6 moves forward and vent 3 2 and valve 3 8 overlap, the cylinder that has reached the maximum internal pressure 1 3 The compressed air inside is instantaneously ejected from the nozzle port 33, and the bullet B is fired (Fig. 16 B). After the bullet is fired, the internal pressure of the piston cylinder device 1 2 drops. Then, when outside air flows in from the air inlet 45 and the pressure difference between the inside and outside approaches, the piston is pulled by the return spring 22 and turns backward (Fig. 16C), returning to the position before the firing operation.

Claims

Scope of request An air gun that has a piston-cylinder device installed in the gun body, compresses air by the advance of its movable member, loads a bullet on the injection shaft of the compressed air, and enables firing. In order to place the bullet to be supplied at the loading position on the injection shaft of the compressed air when the movable member is retracted, and then to inject the compressed air toward the loading position, the piston cylinder is fixed to one device. A firing nozzle slidably provided in the front-rear direction, a drive mechanism for compressing air by advancing the movable member of the piston cylinder device, and a return spring for returning the advanced movable member to its original position, A control device for compressed air having a configuration in which a valve mechanism that opens when a movable member moves forward and pressure inside the piston cylinder device increases is provided in a firing nozzle. The piston cylinder unit is composed of a cylinder fixed to the gun body and a viston provided so as to be slidable with respect to the cylinder, and a return spring for returning the advanced movable member to the original position is provided. 2. The control device for compressed air in an air gun according to claim 1, wherein the control device is either a tension spring accumulated by the advance of the movable member or a compression spring. The firing nozzle has a hollow pipe-like structure that is airtightly slidably provided at the front end of the piston cylinder unit, and receives compressed air flowing from the rear end located inside the piston cylinder unit. 2. The control device for compressed air in an air gun according to claim 1, wherein the control device controls the air gun to inject from a tip portion located outside the biston cylinder. The drive mechanism meshes with a rack provided on the movable member, advances the movable member, releases the above-mentioned meshing at the forward limit, and leaves it under the force of the return spring, and this sector one gear. 2. The control device for compressed air in an air gun according to claim 1, wherein the control device is an electric drive mechanism having a motor for driving a gear. The drive mechanism engages with an engaging portion provided on the movable member, advances the movable member, releases the above-mentioned engagement at the forward limit, and drives the lever under the force of the return spring. 2. The control device for compressed air in an air gun according to claim 1, wherein the control device is a manual drive mechanism having a trigger to perform. The valve mechanism is configured such that the movable member moves forward, accumulates pressure until the pressure inside the piston cylinder device reaches the set pressure, and opens after the pressure inside the piston cylinder device reaches the set pressure. The control apparatus of the compressed air in the air gun of 1. The valve mechanism is located inside the piston cylinder device and is provided at the rear end of the firing nozzle so as to be movable in the front-rear direction, a valve spring that urges the movement valve in the valve closing direction, and a piston. The compression in an air gun according to claim 1, further comprising the rear end portion of the firing nozzle and a valve port provided in the moving valve so as to coincide with each other when the pressure inside the cylinder device reaches a set pressure. Air control device. The valve mechanism is provided at the rear end of the firing nozzle located inside the piston cylinder device, the movable member moves forward, and as the pressure inside the piston cylinder device increases, the firing nozzle is loaded at the time of bullet loading. The control device for compressed air in an air gun according to claim 1, further comprising a pressure receiving portion that enables advancement to a position. The valve mechanism has a peristaltic valve that moves forward with the advance of the movable member and reaches the enormous part in the firing nozzle when the pressure inside the piston cylinder unit reaches the set pressure. The control apparatus of the compressed air in the air gun of Claim 1. .0. The piston cylinder device is formed in the seal member, the attachment part and the attachment part provided on the movable member as an intake valve in order to suck air into the cylinder by the advance of the movable member. 2. The air gun according to claim 1, further comprising an air inlet, wherein the air inlet is closed by the seal member when the movable member moves forward, and the seal member is displaced when the movable member moves backward to open the air inlet. Control device for compressed air.

1. The piston cylinder device sucks air into the cylinder as the movable member moves forward. As a suction valve, the seal member deforms as the movable member moves backward, and a gap is formed between the cylinder and the inner wall of the cylinder. The control device for compressed air in an air gun according to claim 1, wherein the control device is configured to take in air.

2. The piston cylinder device has a suction member that can open and close the intake port at the front end of the cylinder as an intake valve, so that air can be sucked into the cylinder as the movable member moves forward. 2. The control device for a compression air in an air gun according to claim 1, wherein the seal member is deformed by the retreat of the member, the intake port is opened, and intake is performed.