TW202232041A - Gear box device and air gun to improve the performance, reduce vibration and noise, and enhance sense of use and convenience for the user for an air gun using a motor - Google Patents

Abstract

An object of this invention is to improve the performance of an air gun utilizing a motor, reduce vibration and noise, and enhance sense of use and convenience for the user. A gear box device provided in an air gun includes: a motor; a speed reducing part that reduces the rotational speed of the motor and transmits the power of the motor to a bullet shooting part shooting the bullets; a receiving part for receiving the motor and the speed reducing part. The motor is provided in such a way that the motor rotation axis, which is the rotation axis of the motor, is perpendicular to the longitudinal direction of the barrel of the air gun.

Description

Gearbox unit and air gun

Field of Invention

The present invention relates to a gear box device and an air gun as a toy gun equipped with the gear box device. [Background technique]

The air gun, which is a toy gun, uses a piston to compress the air in the cylinder to fire bullets. It is generally known that when the piston is driven, the power of the electric motor is transmitted to drive the air gun.

(Title 1) For example, as shown in FIG. 44 of Patent Document 1, etc., in a conventional air gun, a motor is arranged in a grip. The power of the motor arranged in the handle is transmitted to the piston provided outside the handle through the speed reduction mechanism, thereby driving the piston.

However, on the premise that the motor is built into the grip in this way, when changing the grip according to the user's preference, it is limited to the grip with the motor, which greatly reduces the freedom of the user. Moreover, since the attachment angle of the grip is already fixed, the attachment angle of the grip cannot be changed according to the user's preference. In addition, when the motor rotates, a counter-torque will occur with the direction of the rotation axis of the motor built into the grip as the axis, causing the gun to vibrate in the left and right directions, or the hand holding the grip will feel a sense of disobedience, etc., which may It will detract from the performance of the air gun or the user's sense of use.

As another aspect of the conventional air gun, as shown in FIG. 1 of Patent Document 2, there is a configuration in which the motor is not built in the handle, and the motor is arranged adjacent to the gear train.

However, in the motor of Patent Document 2, since the rotation axis of the motor is arranged parallel to the longitudinal direction of the barrel, when the motor rotates, a counter torque in the left-right direction with the longitudinal direction of the barrel as the axis is generated. Similarly to Document 1, the gun may vibrate to the left and right, or the hand holding the grip may feel uncomfortable, and the performance of the air gun or the user's sense of use may be impaired.

(Second subject) In either of Patent Document 1 and Patent Document 2, since the motor rotating shaft is orthogonal to the rotating shaft of the gear of the reduction portion driving the piston, it is necessary to change the orientation of the rotating shaft at any stage of the reduction portion. For example, by using a transmission mechanism such as a bevel gear (bevel gear) on the input side of the reducer, the rotation is transmitted between two orthogonal axes.

However, when such a transmission mechanism is adopted, when a shake occurs in the thrust direction of the motor due to long-term use of the gun or deterioration over time, there may be a significant deterioration of transmission efficiency due to the shake, vibration, and noise. and increased wear and tear.

(The 3rd subject) Also, as in Patent Document 1, there may be cases where the gear box device can be completely separated from the air gun body. If the gear box device can be completely separated from the air gun body, then the mechanism of the reduction part can be easily replaced or repaired.

However, since the motor and gear box are separate entities, it is necessary to disengage the gear box device from the motor when separating the gear box device from the air gun body, and to adjust the gear box device in order to reassemble it to the air gun. It takes time to mesh the motor and the speed reduction part, and it is necessary to perform precise adjustment so that the backlash when the two meshes are properly adjusted, etc., it cannot be said that the convenience is good.

[Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2006-170473 [Patent Document 2] Japanese Patent Laid-Open No. 2001-033196

Summary of Invention [The problem to be solved by the invention]

The present invention aims to improve the performance and usability of an air gun using a motor. It is more desirable to seek to reduce the vibration, noise and wear of the air gun. It is more desirable to aim at improving the maintainability of the air gun. [means to solve the problem]

The first invention of the present disclosure is a gear box device provided in an air gun, and has: motor; a deceleration part that reduces the rotational speed of the motor and transmits the power of the motor to the bullet firing part that fires the bullet; and an accommodating part for accommodating the motor and the deceleration part, In the motor, the rotating shaft of the motor, that is, the rotating shaft of the motor, is arranged to be perpendicular to the longitudinal direction of the barrel of the air gun. here, The so-called "air gun" is a device that uses the compression force of air or other gas to fire bullets, and the name of the soft air gun, air gun, etc. is arbitrary. "Motor" is a motor that outputs rotational motion using the force of the interaction between a magnetic field and an electric current (Lorentz force), an ultrasonic motor that utilizes ultrasonic vibration, and an electrostatic motor that utilizes electrostatic force. Furthermore, an air motor or a hydraulic motor may also be used. A "bullet" refers to an object fired from a barrel. In addition to the spherical shape of a BB bullet, it can also be in a shape similar to that of a live bullet composed of a bullet and a case. Also, the material of the bullet may be other materials such as plaster or clay in addition to plastic. The “accommodating portion” may be a structure having a space for accommodating components such as gears constituting a motor or a reduction gear, and may not necessarily be a closed structure, and a part of the accommodated components may be exposed or protruded. Also, metal, fiberboard, plastic, etc. will do, whatever the material. The so-called "perpendicular" means that when any one of the two straight lines is moved in parallel, the two straight lines can intersect at a right angle, and the two straight lines can also have a twisted relationship. In addition, it does not necessarily have to be exactly 90 degrees, and there may be errors or gaps. The so-called "perpendicular to the longitudinal direction of the barrel" means perpendicular to the axis of the cylindrical space inside the barrel, and does not depend on the shape or unevenness of the outside of the barrel.

A second invention of the present disclosure is in the gear box device of the first invention, The aforementioned reduction portion has a gear, The rotation axis of the motor is parallel to the rotation axis of the gear. here, The so-called "gear" includes not only toothed gears, but also non-toothed rollers, cams, and pulleys.

A third invention of the present disclosure is in the gear box device of the second invention, The aforementioned reduction portion has a plurality of gears, The rotation axes of the plurality of gears are parallel to each other.

A fourth invention of the present disclosure is in the gear box device of the first invention, The aforementioned motor is a brushless motor.

A fifth invention of the present disclosure is in the gear box device of the first invention, The said motor is provided so that it may contact with the said accommodating part.

A sixth invention of the present disclosure is in the gear box device of the first invention, It further has a control board for controlling the aforementioned motor, The control board is installed on at least one side of the accommodating portion. here, The so-called "one surface" includes at least either the inner surface or the outer surface of the accommodating portion. In addition, all or part of the members constituting the accommodating portion may be missing on the surface on which the control board is provided.

A seventh invention of the present disclosure is in the gear box device of the sixth invention, The control board is provided so as to be in contact with the accommodating portion.

An eighth invention of the present disclosure is in the gear box device of the first invention, The position of the gear box device in the longitudinal direction of the barrel is provided between the grip and the front grip of the air gun or the barrel, and the grip is located behind the trigger of the air gun.

A ninth invention of the present disclosure is the gear box device of the first invention, The motor is rotated in a direction in which a reaction torque generated by the rotation of the motor acts in a direction in which the front end of the barrel is pushed upward.

A tenth invention of the present disclosure is in the gear box device of the first invention, The aforementioned motor is rotated in such a manner that it is gradually accelerated at the start of rotation and gradually slowed down at the end of rotation.

An eleventh invention of the present disclosure is the gear box device of the first invention, The gear box device can be attached to and detached from the aforementioned air gun.

A twelfth invention of the present disclosure is an air gun having: bullet launcher, which fires bullets; motor; a deceleration part that reduces the rotational speed of the motor and transmits the power of the motor to the bullet firing part; and a barrel through which the aforementioned bullets fired by the aforementioned bullet-emitting portion pass, In the motor, the rotating shaft of the motor, that is, the rotating shaft of the motor, is arranged to be perpendicular to the longitudinal direction of the barrel of the air gun.

The thirteenth invention of the present disclosure is in the air gun of the twelfth invention, The air gun further has an accommodating portion for accommodating the motor and the deceleration portion.

A fourteenth invention of the present disclosure is an air gun including the gear box device of the second to eleventh inventions. [Effect of invention]

The gear box device of the present invention can improve the performance and use feeling of the air gun by being arranged on the air gun. The air gun of the present invention can improve the performance and usability of the air gun.

[Form for carrying out the invention]

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In addition, the present invention means the invention described in the claim scope or the means for solving the problem, and is not limited to the following embodiments. In addition, at least the words and phrases in parentheses mean the words and phrases described in the clauses of the scope of claims or the means for solving the problems, and similarly, they are not limited to the following embodiments.

The configurations and methods described in the dependent items of the scope of claims are any configurations and methods of the inventions described in the independent items of the scope of claims. The structure and method of the embodiment corresponding to the structure and method described in the attached items The structure and method of the embodiment, and the structure and method of the embodiment not described in the scope of the patent application and only described in the embodiment are included in the present invention. Arbitrary composition and method. When the description of the scope of claims is broader than the description of the embodiment, the configuration and method described in the embodiment are also arbitrary configurations and methods in the present invention in the sense of exemplifying the configuration and method of the present invention. In any case, it also becomes an essential structure and method of the present invention by being described in the independent item of the patent claim.

The effects described in the embodiments are effects obtained when the configurations of the embodiments are exemplified in the present invention, and are not necessarily the effects of the present invention.

When there are a plurality of embodiments, the configuration disclosed in each embodiment is not limited to each embodiment, but can be combined across the embodiments. For example, the configuration disclosed in one embodiment may be combined with other embodiments. Moreover, the structures disclosed by each of a plurality of embodiments may be combined and combined.

The problem described in the subject to be solved by the present invention is not a known problem, but is a fact discovered by the present inventors alone, and together with the structure and method of the present invention, is a fact for confirming the progress of the present invention.

(1) Overall configuration of the air gun of the present embodiment The configuration of the air gun 1 according to the present embodiment will be described. FIG. 1 shows the internal structure of the main part of an air gun 1, which is a toy gun imitating an assault rifle. The air gun 1 has a barrel 11 , a front grip 12 , an upper frame 13 , a lower receiver 14 , a grip 15 and a magazine 16 .

The inside of the barrel 11 is an elongated cylindrical shape, and the bullet fired from the bullet firing part 20 described later passes through the barrel 11 and guides the bullet to the muzzle. The barrel 11 is also called the barrel or barrel.

The fore grip 12 is a member that encloses the barrel. The user supports the air gun 1 by holding the front grip 12 with one hand. In an actual rifle, the foregrip 12 also has the function of protecting the hand from the heat of the barrel. The fore grip 12 is also known as a forehand, a forehand, or a handguard.

The upper frame 13 is a frame for accommodating a bullet firing part 20 to be described later. The lower casing 14 is a frame for accommodating a gear box device 100 to be described later. The upper frame 13 and the lower receiver 14 are engaged by any engaging components such as fixing pins, and can be separated by removing the fixing pins.

The grip 15 is held by the hand opposite to the hand holding the fore grip 12 to support the air gun and is provided for pulling the trigger.

The magazine 16 is a magazine that stores a plurality of bullets and supplies the bullets to the loading unit L of the bullet firing unit 20 .

The gear box device 100 is formed of a motor 101 , a speed reduction part 102 , and a housing part 103 that houses the motor 101 and the speed reduction part 102 , and transmits the power of the motor 101 to the bullet firing part 20 . Details of the gear box device 100 will be described later using FIGS. 2 to 5 .

The bullet firing part 20 includes a piston 21 , a bullet cylinder 22 and a compression spring 23 , and uses the power of the gear box device 100 to fire bullets.

The piston 21 has a rack 24 that receives power from the gearbox arrangement 100 . Specifically, the rack 24 meshes with a drive gear 102 d of the deceleration unit 102 to be described later, and converts the rotational motion of the drive gear 102 d into the translational motion of the piston 21 .

Furthermore, in the present embodiment, the air gun 1 includes the gear box device 100 , but instead of this, the motor 101 and the reduction unit 102 may be directly provided on the lower casing 14 .

(2) Gearbox device of this embodiment The gearbox device 100 related to the embodiment of the present invention will be described using FIGS. 2 to 5 .

As shown in FIGS. 2 to 5 , the gear box device 100 includes a motor 101 , a deceleration unit 102 , a housing unit 103 , and a control board 104 .

1. Motor 101 The motor 101 generates power generated by rotational motion by converting electrical energy supplied from a battery (not shown) into mechanical energy.

The type of the motor 101 is not limited, but a brushless motor is particularly suitable. A brushless motor is a motor that rotates a rotor composed of magnets by a magnetic field generated by a current flowing through a stator coil, and a current value is adjusted by a drive circuit (motor driver) composed of power elements such as transistors provided on the control board 104 . change to control the rotation.

In this way, since the brushless motor rotates a magnet that does not require power supply instead of a coil, the rotating rotor can be reduced in size, thereby achieving thinning, miniaturization, and weight reduction. As a result, the reduction unit 102 can be compactly accommodated in the accommodating unit 103, and the gearbox device 100 itself can be reduced in size. Then, as will be described later, it is easy to set the rotation axis of the motor 101 to be perpendicular to the longitudinal direction of the barrel of the air gun 1 . Also, since a brushless motor does not require brushes and commutators, which are consumable parts of a brush-attached motor, it has a long life and high reliability. Furthermore, since the brushless motor uses a control board such as a motor driver to control the current flowing through the stator coils, various operation settings such as rotation, stop, and power change can be set.

In the present embodiment, the motor 101 is installed so that the rotation axis of the motor 101 is perpendicular to the longitudinal direction of the barrel 11 of the air gun 1 . That is, in FIG. 1, the rotation axis MA of the motor 101 which comprises the gear box apparatus 100 is orthogonal to the center line F of a gun barrel. In this case, the rotation axis MA is also orthogonal to the vertical direction. In addition, the rotation axis MA is parallel to the horizontal plane (ground plane).

In this way, by arranging the rotation axis MA of the motor 101 so as to be perpendicular to the longitudinal direction of the barrel 11, a counter torque in the rotation direction around the rotation axis MA is generated. The counter torque in this direction can be easily absorbed by the user holding the grip 15 and the front grip 12 . According to the arrangement of the motor 101 as in the present embodiment, there is no rotation direction centered on the long axis of the grip 15 as conventionally known, or a rotational direction centered on the long axis of the barrel 11 . Shaking in the left and right directions due to the opposite torque.

Furthermore, in the present embodiment, as shown in FIG. 1 , in the gear box device 100 including the motor 101, the position in the longitudinal direction of the barrel 11 is a grip provided behind the trigger of the air gun 1. Between the handle 15 and the fore grip 12. As a result, the sum of the torques due to the reaction forces received from the hand holding the grip 15 and the front grip 12 will be opposed to the reaction torque generated in the air gun 1 by the rotation of the motor 101 . Therefore, the counter torque of the motor 101 can be easily absorbed by the user holding the grip 15 and the front grip 12 . Furthermore, in the case of the air gun 1 without the fore grip 12 , the gear box device 100 may also be provided at a position between the grip 15 and the barrel 11 .

In this embodiment, the rotation direction of the motor 101 is arbitrary, but it may be made to rotate in a direction in which the reaction torque generated by the rotation of the motor 101 acts in a direction to push the front end of the barrel 11 upward. In the case of FIGS. 1 and 2 , the rotation axis MA is rotated rightward (clockwise) toward the paper surface of FIGS. 1 and 2 . With the reaction torque acting in such a direction, the same feeling as a real gun can be reproduced.

Conversely, the reverse torque generated by the rotation of the motor 101 may be made to rotate in a direction in which the front end of the barrel 11 is pushed down. In the case of FIG. 1 or FIG. 2 , the rotation axis MA is rotated to the left (counterclockwise) toward the paper surface of FIG. 1 or FIG. 2 . In this case, the rotational direction of the driving gear 102d becomes reversed and does not mesh with the rack 24, so the intermediate gear 102b may be omitted, or another intermediate gear may be added in addition to the intermediate gear 102b.

Which direction to make can be determined according to the user's preference.

In addition, the rotational speed of the motor 101 may be controlled to be slow at the start of rotation, gradually accelerate to a certain speed, gradually decrease toward the end of rotation, and finally stop. The velocity gradient can be linear or exponential. By performing such control, the gears constituting the speed reduction portion 102 can be prevented from being damaged, and the generation of the reverse torque can be suppressed.

2. Deceleration part 102 The power of the motor 101 is input to the speed reduction unit 102 . The speed reduction part 102 reduces the rotational speed of the motor 101 and transmits the power of the motor 101 to the bullet firing part 20 .

In the present embodiment, the speed reduction portion 102 includes an input gear 102a, an intermediate gear 102b, an output gear 102c, and a drive gear 102d.

The rotation shaft of the input gear 102a is connected to the motor 101 so as to be coaxial with the motor shaft MA, and is directly driven and rotated by the motor 101 . The intermediate gear 102b is composed of two gears, a large-diameter gear and a small-diameter gear, and the rotation speed of the intermediate gear 102b is reduced by a reduction ratio determined by the gear ratio of the large-diameter gear and the input gear 102a. The output gear 102c is also composed of two gears, a large-diameter gear and a small-diameter gear, and the rotation speed of the intermediate gear 102b is determined by the reduction ratio determined by the gear ratio of the large-diameter gear of the output gear 102c and the small-diameter gear of the intermediate gear 102b. reduce.

Therefore, in the deceleration portion 102, the rotational speed of the motor 101 can be greatly increased while having a compact structure by the deceleration between the input gear 102a and the intermediate gear 102b and the deceleration between the intermediate gear 102b and the output gear 102c. slow down.

The drive gear 102d is connected to the output gear 102c via a planetary gear, and is a gear that rotates in the opposite direction to the output gear 102c. The drive gear 102d meshes with the rack 24 of the piston 21, and the rotational motion of the drive gear 102d that rotates counterclockwise in FIGS. 1 and 2 is converted into a linear motion of the piston 21 moving in the left direction. In addition to this, the output from the output gear 102c is further decelerated because the planetary gear is passed.

Fig. 3 is a side view of the gear box device of Fig. 2 viewed from the direction A, and Fig. 4 is a perspective view of the gear box device of Fig. 3 viewed from the direction B of the gear box device. As shown in FIGS. 3 and 4 , the drive gear 102d has a toothed portion T, which is a tooth of the gear, and a non-toothed portion N, which does not have teeth, on the outer peripheral portion thereof.

When the toothed portion T of the driving gear 102d is opposed to the rack 24 of the piston 21, since the toothed portion T meshes with the rack 24 of the piston 21, the output torque of the deceleration portion 102 is transmitted through the toothed portion T of the driving gear 102d. The rack 24 is transmitted to the piston 21 as a driving force.

On the other hand, when the drive gear 102d rotates and the toothless portion N faces the rack 24, the piston 21 is released from the restraint with the drive gear 102d, so that the output torque of the speed reduction portion 102 is not transmitted to the rack 24. Therefore, the piston 21 is moved to the right by the compressive force of the compression spring 23 .

As described above, since the drive gear 102d has the toothed portion T, that is, the toothless portion N, the desired movement in the left-right direction of the piston 21 can be realized.

However, as shown in FIG. 2 , the rotation axes MA of the motor 101, the input gear 102a, the intermediate gear 102b, and the output gear 102c are parallel to each other and perpendicular to the surface of FIG. 2 . Therefore, the rotation axes of all the gears of the speed reduction portion 102 are parallel to the rotation axis MA of the motor 101 .

In particular, since the rotation axis MA of the motor 101 and the rotation axis of the input gear 102a are parallel, there is no need to use a transmission mechanism that transmits rotation between two non-parallel shafts as in the conventional meshing of bevel gears. That is, as a gear of the input gear 102a meshing with the motor 101, a spur gear (Spur Gear) can be used. When the gear is a spur gear, even when shaking occurs in the thrust direction of the motor due to long-term use of the gun or deterioration over time, no thrust is transmitted, and the shaking in the thrust direction can be absorbed. Therefore, unlike the conventional technique using the helical gear, the transmission efficiency of the speed reduction portion 102 is not deteriorated, and vibration, noise, and wear can be reduced.

In addition, since the rotation axes of the plurality of gears constituting the speed reduction portion 102 are all parallel, all or part of the counter torque generated by the respective gears can be canceled.

Further, in the speed reduction portion 102, in addition to transmission through gears, sliding contact transmission such as a cam, rolling contact transmission such as a friction wheel, or transmission using a belt and a pulley may be used.

3. Containment Department 103 The accommodating part 103 accommodates the motor 101 and the deceleration part 102 .

By accommodating the motor 101 and the speed reduction part 102 in the housing part 103 , the gear box device 100 can be provided with both the motor 101 and the speed reduction part 102 . That is, the gear box device 100 may include the entire power transmission system to the bullet firing unit 20 .

Therefore, since the motor 101 is built in, there is no need to provide additional space in other parts. For example, since the grip 15 does not need a special structure for providing a space for accommodating the motor 101, the grip 15 can freely change the shape, design, angle, and weight of the grip according to the user's preference. In addition, the grip 15 can use the grip of a real gun.

In this embodiment, the motor 101 and the accommodating portion 103 are provided in contact with each other. Specifically, the rear surface of the motor 101 is provided so as to be in contact with the accommodating portion 103 . If the accommodating portion 103 is made of a material with high thermal conductivity such as aluminum alloy or zinc alloy, the accommodating portion 103 functions as a heat sink, thereby preventing the motor 101 from overheating. The heat of the accommodating portion 103 can be released to the outside through the lower casing 14 . This configuration is particularly suitable when a brushless motor is used for the motor 101 . Since the coils of the stator in the brushless motor are arranged to be in contact with the back surface of the motor, heat can be efficiently discharged through the accommodating portion 103 .

The material constituting the accommodating portion 103 can be selected from any material such as plastic or metal. When it is made of metal, it can be manufactured by casting such as die casting or by using forging.

The gear box device 100 may be made detachable from the air gun 1 . In the case of the present embodiment, since the gear box device 100 has the accommodating portion 103, the gear box device 100 constitutes an independent device and can be easily detached.

For example, when the gear box device 100 is removed from the air gun 1 , the upper gun body 13 and the lower receiver 14 are separated, and the gear box device 100 is pulled out from the lower receiver 14 .

For example, when the gear box device 100 is installed on the air gun 1 , the gear box device 100 is embedded in the space provided in the lower casing 14 . At this time, since a motor is not provided on the handle 15 as in the conventional art, it is not necessary to adjust the position of the gear box device 100 . Next, the upper frame 13 and the lower receiver 14 are combined.

In this way, by allowing the gearbox device 100 to be attached to and detached from the air gun 1, replacement and repair of the gearbox device 100 can be easily performed. In addition, since the gear box device 100 including the motor 101 and the speed reduction part 102 can be attached and detached as a whole, when the gear box device 100 is mounted on the air gun, the work of meshing the motor with the gear of the speed reduction part becomes unnecessary, and it is possible to Installation is easy.

Furthermore, the gear box device 100 may be exchanged with the gear box device of a conventional air gun. If the gear box device 100 is installed in the space of the gear box device of the conventional air gun and the electric wire for supplying the power supply from the battery is connected, the motor which is originally provided in the conventional air gun can not be used, but Use a conventional air gun.

4. Control substrate 104 The gear box device 100 has a control board 104 for controlling the motor 101 . The control board 104 is mounted on at least one side of the housing portion 103 . In this embodiment, as shown in FIG. 5 , the control board 104 is mounted on the back surface of the housing portion 103 .

Since the motor 101 is accommodated in the accommodating portion 103, the control board 104 can also be installed on the backside of the accommodating portion 103 close to the motor 101, thereby shortening signal lines, power lines, etc., thereby improving reliability. Also, the entire power transmission system including the control board 104 that transmits power to the bullet firing unit 20 can be compactly integrated into the gear box device 100 . Furthermore, by compactly gathering the gear box device 100 including the control board 104, a wider space for the battery can be secured and the operating time of the air gun can be made longer. Specifically, in the past, the control board 104 and the battery were installed in the back tube provided at the rear of the upper gun body 13. However, by integrating the control board 104 and the gear box device 100, the back tube can be integrated into the back tube. All are used as battery space.

Moreover, in this embodiment, the control board 104 and the accommodating part 103 are provided so that it may contact. If the accommodating portion 103 is made of a material having high thermal conductivity such as aluminum alloy or zinc alloy, the accommodating portion 103 functions as a heat sink and can dissipate heat generated from the control board 104 . With such a configuration, malfunction due to overheating of the control board 104 can be prevented.

The control board 104 can also be installed on the front, side or bottom surface of the accommodating portion 103 , instead of being installed on the back surface of the accommodating portion 103 . In addition, it may be installed so as to straddle both the back surface and the side surface of the accommodating portion 103, or both the back surface and the bottom surface.

Furthermore, the control method of the motor 101 using the control board 104 can be changed by the user through a user interface (not shown) or the like. The user can independently change the delay time from the triggered command, the rotational torque or rotational speed, the rotational profile, etc.

5. The features described in the embodiments are understood as inventions The features described in the above embodiments can be understood as independent inventions. For example, from the viewpoint of the structure, the axial direction of the motor 101 , the rotation control of the motor 101 , the axial direction of the gears constituting the speed reduction part 102 , the structure of the accommodating part 103 , and the relationship between the accommodating part 103 and other components can be understood as Independent invention. In addition, from the viewpoint of function, countermeasures against torque, noise, vibration, or wear, thermal, compatibility, and interesting measures can all be understood as independent inventions.

(3) Operation of the air gun of the present embodiment The action of the air gun 1 of the present embodiment up to the firing of the bullet will be described.

When the user pulls the trigger (not shown), the sending command signal will be sent to the control board 104 . The control board 104 that receives the transmission command signal will control and rotate the motor 101 .

The power of the motor 101 is transmitted to the piston 21 via the speed reduction portion 102 . Specifically, when the toothed portion T of the drive gear 102d meshes with the rack 24, the piston 21 moves to the left in FIG. 1 . The compression spring 23 is compressed by the movement of the piston 21 .

On the other hand, the bullets stored in the magazine 17 are charged to the charging portion L at the base of the barrel 11 by the negative pressure of the cartridge 22 .

When the drive gear 102d rotates further and the toothless portion N and the rack 24 face each other, the restriction of the rack 24 is released, and the piston 21 receives the spring force of the compression spring 23. In FIG. 1, the piston 21 moves rightward.

With the rightward movement of the piston 21, the air in the cylinder 22 is compressed and the pressure for firing the bullet is generated.

The bullet receives this pressure, moves while accelerating in the barrel 11 , and is fired from the muzzle 11 .

(4) Overall The features of the gear box device and the air gun according to the embodiments of the present invention have been described above. Since the terms used in each embodiment are examples, they may be replaced with terms that are synonymous or terms that include functions that are synonymous.

In the gear box device of the present invention, necessary functions such as a communication device for a control interface may be added.

In the air gun of the present invention, necessary functions such as a sight, a safety device, and a sling may be added. [Industrial availability]

Although the gear box device of the present invention and the air gun equipped with the gear box device have been described as being applicable to toy guns, they can also be used as shooting competition guns, various training guns, model guns, and the like.

1: air gun 11: barrel 12: Front Grip 13: Upper gun body 14: Lower receiver 15: Grip 16: Magazine 20: Bullet Launching Department 21: Pistons 22: Bullet Nest 23: Compression spring 24: rack 100: Gearbox device 101: Motor 102: Reduction Department 102a: Input gear 102b: Intermediate gear 102c: Output gear 102d: Drive gear 103: Containment Department 104: Control substrate A, B: direction F: Centerline L: filling section MA: Rotary axis N: No teeth T: with teeth

FIG. 1 is a conceptual diagram showing the internal structure of the main part of the air gun according to the embodiment of the present invention. FIG. 2 is a view of the gear box device according to the embodiment of the present invention as viewed from the front. Fig. 3 is a view of the gear box device according to the embodiment of the present invention as viewed from the side. Fig. 4 is a view of the gear box device according to the embodiment of the present invention as viewed obliquely from above. FIG. 5 is a view of the gear box device according to the embodiment of the present invention as viewed from the rear direction.

1: air gun

11: barrel

12: Front Grip

13: Upper gun body

14: Lower receiver

15: Grip

16: Magazine

20: Bullet Launching Department

21: Pistons

22: Bullet Nest

23: Compression spring

24: rack

100: Gearbox device

F: Centerline

L: filling section

MA: Rotary axis

Claims (14)

A gear box device is a gear box device arranged on an air gun, and has: motor; a deceleration part that reduces the rotational speed of the motor and transmits the power of the motor to the bullet firing part that fires the bullet; and an accommodating part for accommodating the motor and the deceleration part, In the motor, the rotating shaft of the motor, that is, the rotating shaft of the motor, is arranged to be perpendicular to the longitudinal direction of the barrel of the air gun. The gear box device of claim 1, wherein the speed reduction portion has a gear, and the rotation axis of the motor is parallel to the rotation axis of the gear. The gear box device of claim 2, wherein the speed reduction portion has a plurality of gears, and the rotation axes of the plurality of gears are parallel to each other. The gearbox device of claim 1, wherein the aforementioned motor is a brushless motor. The gear box device of claim 1, wherein the motor is arranged to be in contact with the receiving portion. The gear box device according to claim 1, further comprising a control board for controlling the motor, and the control board is installed on at least one side of the accommodating portion. The gear box device of claim 6, wherein the control substrate is arranged to be in contact with the receiving portion. The gear box device of claim 1, wherein the position of the gear box device in the longitudinal direction of the barrel is provided between the grip and the front grip or the barrel of the air gun, and the grip is located on the front of the air gun. The rear of the air gun's trigger. The gear box device of claim 1, wherein the motor rotates in a direction in which a reaction torque generated by the rotation of the motor acts in a direction in which the front end of the barrel is pushed upward. The gear box apparatus of claim 1, wherein the aforementioned motor is rotated in such a manner that it is gradually accelerated at the start of rotation and gradually slowed down at the end of rotation. The gearbox device of claim 1, wherein the gearbox device is detachable from the aforementioned air gun. An air gun having: bullet launcher, which fires bullets; motor; a deceleration part that reduces the rotational speed of the motor and transmits the power of the motor to the bullet firing part; and a barrel through which the aforementioned bullets fired by the aforementioned bullet-emitting portion pass, In the motor, the rotating shaft of the motor, that is, the rotating shaft of the motor, is arranged to be perpendicular to the longitudinal direction of the barrel of the air gun. The air gun of claim 12, further comprising an accommodating portion for accommodating the motor and the deceleration portion. An air gun provided with the gear box device of any one of claims 2 to 11.

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