JP2022119707A - Gear box device and air gun - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve improvement of performance, reduction of vibration and noise, and improvement of user's usefulness and convenience in an air gun using a motor.

SOLUTION: A gear box device is provided at an air gun and includes: a motor; a speed reduction part which reduces a rotation speed of the motor and transmits power of the motor to a bullet discharge part which discharges bullets; a housing part which houses the motor and the speed reduction part; and a control board for controlling the motor. The control board is attached to at least one surface of the housing part.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

PEACE COMBAT #041 (March 2021 issue) (published by Astowa Co., Ltd., date of issue: March 1, 2021)

The present invention relates to a gearbox device and an airgun as a toy gun equipped with the gearbox device.

An air gun as a toy gun shoots a bullet by compressing air in a cylinder with a piston. It is generally well known that the piston is driven by transmitting the power of an electric motor.

(First issue)
For example, as shown in FIG. 44 of Patent Document 1, some conventional air guns have a motor arranged in a grip. Power of a motor arranged in the grip is transmitted to a piston arranged outside the grip via a speed reducing mechanism to drive the piston.

However, on the premise that the motor is built into the grip in this way, when the user wants to replace the grip according to his or her preference, the grip is limited to a motor-equipped grip, which greatly reduces the user's degree of freedom.
Moreover, since the attachment angle of the grip is fixed, the attachment angle of the grip cannot be changed according to the user's preference.
Furthermore, when the motor rotates, counter torque is generated around the rotation axis direction of the motor built into the grip, causing the gun to sway left and right, and the hand holding the grip to feel uncomfortable. , could impair the performance of the airgun or the user's experience.

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

However, the motor of Patent Document 2 is arranged so that the rotation axis of the motor is parallel to the longitudinal direction of the barrel. The generation of anti-torque may impair the performance of the air gun or the user's feeling of use, such as the gun swinging to the left and right, or the hand holding the grip feeling uncomfortable, as in Patent Document 1.

(Second issue)
In both cases of Patent Document 1 and Patent Document 2, the rotation axis of the motor and the rotation axis of the gear of the reduction section that drives the piston are orthogonal, so it is necessary to change the direction of the rotation axis at some stage of the reduction section. There is For example, by adopting a transmission mechanism such as a bevel gear (bevel gear) on the input side of the reduction section, it is configured to transmit rotation between two orthogonal axes.

However, when such a transmission mechanism is employed, if play occurs in the thrust direction of the motor due to long-term use of the gun or deterioration over time, the play will significantly deteriorate the transmission efficiency, cause vibration and noise. , there was a problem of increased wear.

(Third issue)
Also, as in Patent Document 1, there is a gearbox device that can be completely separated from the air gun main body. If the gearbox device can be completely separated from the air gun body, the mechanism of the speed reduction section can be easily replaced or repaired.

However, since the motor and gearbox are separated, it is necessary to separate the gearbox device from the motor when separating it from the air gun body. It was not always convenient because it took time to adjust the meshing with the gear of the part, and precise adjustment was required to obtain the appropriate backlash when the two were meshed.

Japanese Patent Application Laid-Open No. 2006-170473 Japanese Patent Application Laid-Open No. 2001-033196

An object of the present invention is to improve the performance and usability of an air gun that uses a motor.
Another object is to reduce vibration, noise, and wear of the air gun.
Alternatively, the object is to improve the maintainability of the air gun.

A first invention of the present disclosure is a gearbox device provided in an air gun,
a motor;
a deceleration unit that reduces the rotation speed of the motor and transmits the power of the motor to a bullet launching unit that shoots bullets;
an accommodating portion that accommodates the motor and the speed reducing portion;
a control board for controlling the motor,
The control board is mounted on at least one surface of the accommodating portion.
here,
An "air gun" may be any device that shoots a bullet using the compressive force of air or other gas, and may be called an airsoft gun, an air gun, or the like.
The "motor" includes an ultrasonic motor that utilizes ultrasonic vibration and an electrostatic motor that utilizes electrostatic force, in addition to those that output rotational motion using force due to the interaction of a magnetic field and current (Lorentz force). Furthermore, an air motor or a hydraulic motor can also be used.
A "bullet" means an object that is fired from a barrel, and may have a spherical shape such as a BB bullet or a shape similar to a live bullet consisting of a warhead and a cartridge case. The material of the bullet may be other materials such as gypsum, clay, etc., in addition to plastic.
The "accommodating part" may be any structure that has a space for accommodating parts such as gears that constitute the motor and speed reducer, and does not necessarily have to be a closed structure. , may protrude. Furthermore, any material can be used, such as metal, fiberboard, or plastic.
"One side" includes either the inner or outer surface of the container. Further, all or part of the members forming the housing portion may be omitted from the surface on which the control board is provided.

A second invention of the present disclosure is the gearbox device of the first invention,
The control board is provided so as to be in contact with the housing portion.

A third invention of the present disclosure is the gearbox device of the first invention,
The motor is provided so as to be in contact with the housing portion.

A fourth invention of the present disclosure is the gearbox device of the third invention,
The motor is a brushless motor.

A fifth invention of the present disclosure is the gearbox device of the second invention or the third invention,
The housing portion has thermal conductivity to function as a heat sink.

A sixth invention of the present disclosure is the gearbox device of the first invention,
The gearbox device is detachable from the air gun.

A seventh invention of the present disclosure is the gearbox device of the first invention,
In the motor, the motor rotation axis, which is the rotation axis of the motor, is vertical to the longitudinal direction of the barrel of the air gun, and the motor rotation axis is vertical when the gearbox is attached to the air gun. installed so as to be perpendicular to the
here,
“Perpendicular” refers to a relationship in which two straight lines intersect at right angles when one of the two straight lines is translated, and the two straight lines may be in a twisted relationship. Moreover, it does not have to be exactly 90 degrees, and there may be an error or play.
"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 outer surface of the barrel.

An eighth invention of the present disclosure is the gearbox device of the first invention,
The deceleration unit has a gear,
The motor axis of rotation is parallel to the axis of rotation of the gear.
here,
"Gear" includes gears with teeth, as well as rollers and cams without teeth, and pulleys.

A ninth invention of the present disclosure is the gearbox device of the eighth invention,
The deceleration unit has a plurality of gears,
The rotation axes of the plurality of gears are parallel to each other.

A tenth invention of the present disclosure is the gearbox device of the first invention,
The motor rotates in a direction such that counter torque generated by rotation of the motor acts in a direction to push up the tip of the barrel.

An eleventh invention of the present disclosure is the gearbox device of the first invention,
The motor rotates gradually at a faster speed at the start of rotation and at a slower speed at the end of rotation.

A twelfth invention of the present disclosure is an air gun,
a bullet launcher that shoots bullets;
a motor;
a deceleration unit that reduces the rotation speed of the motor and transmits the power of the motor to the bullet launcher;
an accommodating portion that accommodates the motor and the speed reducing portion;
a control board for controlling the motor;
a barrel through which the bullet fired from the bullet firing unit passes;
a grip for grasping by a user;
The control board is mounted on at least one surface of the accommodating portion.

A thirteenth invention of the present disclosure is an air gun comprising the gearbox device of the second to eleventh inventions.

By providing the gearbox device of the present invention in an air gun, it is possible to improve the performance and usability of the air gun. Alternatively, the vibration, noise and wear of the air gun can be reduced. Alternatively, it is possible to improve the maintainability of the air gun.

The air gun of the present invention can improve the performance and usability of the air gun. Alternatively, the vibration, noise and wear of the air gun can be reduced. Alternatively, it is possible to improve the maintainability of the air gun.

1 is a conceptual diagram showing the internal structure of main parts of an air gun according to an embodiment of the present invention; The figure which looked at the gearbox apparatus of embodiment of this invention from the front direction The figure which looked at the gearbox apparatus of embodiment of this invention from the side direction The figure which looked at the gearbox apparatus of embodiment of this invention from the diagonally upward direction. The figure which looked at the gearbox apparatus of embodiment of this invention from the back direction

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

It should be noted that the present invention means the invention described in the scope of claims or the section of Means for Solving the Problems, and is not limited to the following embodiments. In addition, at least the words and phrases in angle brackets mean the words and phrases described in the claims or the means for solving the problems section, and are not limited to the following embodiments.

The configurations and methods described in the dependent claims are arbitrary configurations and methods in the invention described in the independent claims. The configurations and methods of the embodiments corresponding to the configurations and methods described in the dependent claims, and the configurations and methods described only in the embodiments without being described in the claims, are optional configurations and methods in the present invention. The configuration and method described in the embodiment when the description of the claims is broader than the description of the embodiment are also arbitrary configurations and methods in the present invention in the sense that they are examples of the configuration and method of the present invention. . In either case, the essential features and methods of the invention are described in the independent claims.

The effects described in the embodiments are the effects when having the configuration of the embodiment as an example of the present invention, and are not necessarily the effects of the present invention.

When there are multiple embodiments, the configuration disclosed in each embodiment is not limited to each embodiment, but can be combined across the embodiments. For example, a configuration disclosed in one embodiment may be combined with another embodiment. Further, the configurations disclosed in each of the plurality of embodiments may be collected and combined.

The problems described in the Problems to be Solved by the Invention are not known problems, but were independently discovered by the inventors, and are facts that affirm the inventive step of the invention together with the structure and method of the present invention.

(1) Overall Configuration of Air Gun of this Embodiment The configuration of the air gun 1 of this embodiment will be described.
FIG. 1 shows the internal structure of the main parts of an air gun 1, which is a toy gun imitating an assault rifle. The air gun 1 has a barrel 11, a foregrip 12, an upper receiver 13, a lower receiver 14, a grip 15 and a magazine 16.

The barrel 11 has an elongated cylindrical shape inside, and guides a bullet to the muzzle by passing a bullet fired from a bullet firing section 20 described later. The barrel 11 is also called a barrel or a gun barrel.

The foregrip 12 is a member that wraps around the barrel. The user supports the air gun 1 by gripping the foregrip 12 with one hand. In an actual rifle, the foregrip 12 also serves to protect the hand from the heat of the barrel. The foregrip 12 is also called a front stand, a forehand, or a handguard.

The upper receiver 13 is a frame that accommodates a bullet launcher 20, which will be described later.
The lower receiver 14 is a frame that accommodates a gearbox device 100, which will be described later.
The upper receiver 13 and the lower receiver 14 are engaged by arbitrary engaging means such as a fixing pin, and can be separated by removing the fixing pin.

The grip 15 is provided to support the air gun and pull the trigger by gripping the foregrip 12 with the opposite hand.

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

The gearbox device 100 includes a motor 101 , a reduction section 102 , and a housing section 103 that houses the motor 101 and the reduction section 102 , and is a device that transmits the power of the motor 101 to the bullet launching section 20 . Details of the gearbox device 100 will be described later with reference to FIGS.

The bullet launcher 20 includes a piston 21, a cylinder 22, and a compression spring 23, and uses the power of the gearbox device 100 to shoot bullets.

Piston 21 has a rack gear 24 that receives power from gearbox device 100 . Specifically, the rack gear 24 meshes with a drive gear 102d of the deceleration section 102, which will be described later, and converts the rotational motion of the drive gear 102d into the translational motion of the piston 21. As shown in FIG.

Although the air gun 1 has the gear box device 100 in this embodiment, the motor 101 and the speed reducing section 102 may be directly provided in the lower receiver 14 instead.

(2) Gearbox Device of the Present Embodiment A gearbox device 100 of the embodiment of the present invention will be described with reference to FIGS. 2 to 5. FIG.

As shown in FIGS. 2 to 5, the gearbox device 100 has a motor 101, a reduction section 102, a housing section 103, and a control board 104. FIG.

ah. motor 101
The motor 101 converts electrical energy supplied from a battery (not shown) into mechanical energy to generate power in the form of rotational motion.

Although the type of motor 101 is not limited, it is particularly preferable to use a brushless motor. A brushless motor is a motor that rotates a rotor made of magnets by means of a magnetic field created by a current flowing through a coil of a stator. Rotation is controlled by changing the current value.

As described above, the brushless motor rotates not a coil but a magnet that does not require a power supply. Therefore, by reducing the size of the rotating rotor, it is possible to reduce the thickness, size, and weight of the motor. As a result, it can be compactly housed in the housing portion 103 together with the speed reducing portion 102, and the gearbox device 100 itself can be miniaturized. Then, as will be described later, it becomes easy to provide the rotating shaft of the motor 101 so as to be perpendicular to the longitudinal direction of the barrel of the air gun 1 .
In addition, unlike brushed motors, brushless motors do not require consumable parts such as brushes and commutators, so they have a long service life and high reliability.
Furthermore, since the brushless motor controls the current flowing through the coils of the stator by means of a control board such as a motor driver, it is possible to set various operations such as rotation/stop and power change.

In this embodiment, the motor 101 is provided so that the rotating shaft 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 that constitutes the gearbox device 100 is perpendicular to the center line F of the barrel. In this case, the rotation axis MA is also perpendicular to the vertical direction. Further, the rotation axis MA is parallel to the horizontal plane (ground plane).

By arranging the motor 101 so that the rotational axis MA of the motor 101 is perpendicular to the longitudinal direction of the barrel 11, counter torque is generated in the rotational direction about the rotational axis MA. The counter-torque in such a direction can be easily absorbed by the user gripping the grip 15 and the foregrip 12 . According to the arrangement of the motor 101 as in the present embodiment, the rotation direction about the long axis of the grip 15 and the rotation direction about the long axis of the barrel 11 generated by the anti-torque generated in the left and right direction. No blurring occurs.

Furthermore, in this embodiment, as shown in FIG. It is set up so that As a result, the counter torque generated in the air gun 1 by the rotation of the motor 101 is countered by the sum of the torque due to the reaction force received from the hand holding the grip 15 and the foregrip 12, so that the counter torque of the motor 101 can be easily absorbed by the user gripping the grip 15 and the foregrip 12 .
In the case of the air gun 1 without the foregrip 12 , the gearbox device 100 may be provided between the grip 15 and the barrel 11 .

In this embodiment, the rotation direction of the motor 101 is arbitrary, but the motor 101 may rotate in a direction in which the counter torque generated by the rotation of the motor 101 acts in a direction to push up the tip of the barrel 11 . In the case of FIGS. 1 and 2, the rotation axis MA rotates to the right (clockwise) with respect to the paper surface of FIGS. By applying anti-torque in such a direction, it is possible to reproduce the same feeling as a real gun.

Conversely, the motor 101 may rotate in such a direction that the counter torque generated by the rotation of the motor 101 acts to push down the tip of the barrel 11 . In the case of FIGS. 1 and 2, the rotation axis MA rotates to the left (counterclockwise) with respect to the paper surface of FIGS. In this case, the rotation direction of the drive gear 102d is reversed and it does not mesh with the rack gear 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 use can be determined according to the user's preference.

Alternatively, the rotation speed of the motor 101 may be slowed at the start of rotation, gradually increased to a constant speed, gradually decreased toward the end of rotation, and finally stopped. The velocity gradient can be linear or exponential. By performing such control, it is possible to prevent damage to the gears constituting the reduction section 102 and to suppress the generation of counter torque.

stomach. Deceleration unit 102
The power of the motor 101 is input to the deceleration unit 102 . The deceleration unit 102 reduces the rotational speed of the motor 101 and transmits the power of the motor 101 to the bullet launcher 20 .

In this embodiment, the speed reduction section 102 has an input gear 102a, an intermediate gear 102b, an output gear 102c, and a driving 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 rotationally driven by the motor 101. As shown in FIG.
The intermediate gear 102b is composed of two gears, a large-diameter gear and a small-diameter gear.
The output gear 102c is also composed of a large-diameter gear and a small-diameter gear, and the rotational speed of the intermediate gear 102b is reduced by a reduction ratio determined by the gear ratio between the large-diameter gear of the output gear 102c and the small-diameter gear of the intermediate gear 102b. do.

Therefore, in the deceleration unit 102, the speed reduction between the input gear 102a and the intermediate gear 102b and the speed reduction between the intermediate gear 102b and the output gear 102c can significantly reduce the rotational speed of the motor 101 while maintaining a compact configuration. can.

The drive gear 102d is a gear that is connected to the output gear 102c via a planetary gear and rotates in the opposite direction to the output gear 102c. The drive gear 102d meshes with the rack gear 24 of the piston 21, and the counterclockwise rotary motion of the drive gear 102d in FIGS. 1 and 2 is converted into a linear motion in which the piston 21 moves leftward. In addition, since it is through the planetary gear, it is further decelerated from the output of the output gear 102c.

3 is a side view of the gearbox device of FIG. 2 as viewed in direction A, and FIG. 4 is a perspective view of the gearbox device of FIG. 3 as viewed in direction B. FIG.
As shown in FIGS. 3 and 4, the driving gear 102d has a toothed portion T having teeth as a gear and a toothless portion N having no teeth on its outer peripheral portion.

When the toothed portion T of the drive gear 102d and the rack gear 24 of the piston 21 are opposed to each other, the toothed portion T and the rack gear 24 of the piston 21 mesh with each other, so that the output torque of the speed reduction portion 102 is the same as that of the toothed portion of the drive gear 102d. The driving force is transmitted to the rack gear 24 of the piston 21 via T.

On the other hand, when the drive gear 102d rotates and the toothless portion N faces the rack gear 24, the piston 21 is disengaged from the drive gear 102d. Not transmitted. Therefore, the piston 21 moves to the right due to the compression force of the compression spring 23 .

In this manner, the drive gear 102d has the toothed portion T and the toothless portion N, so that the piston 21 can be moved as desired in the left-right direction.

By the way, as shown in FIG. 2, the rotation axis MA of the motor 101, the rotation axes of the input gear 102a, the intermediate gear 102b, and the output gear 102c are parallel to each other, and are perpendicular to the plane of FIG. be. Therefore, the rotation axes of all the gears of the reduction section 102 are parallel to the rotation axis MA of the motor 101 .

In particular, since the rotational axis MA of the motor 101 and the rotational axis of the input gear 102a are parallel, there is no need to use a conventional transmission mechanism for transmitting rotation between two non-parallel shafts such as engagement of bevel gears. That is, the input gear 102a that meshes with the motor 101 can be a spur gear. If the gear is a spur gear, even if play occurs in the thrust direction of the motor due to long-term use of the gun or deterioration over time, the thrust force will not be transmitted and the play in the thrust direction will be absorbed. can. Therefore, unlike the prior art that uses bevel gears, the transmission efficiency of the reduction section 102 does not deteriorate, and vibration, noise, and wear can be reduced.

In addition, since the rotating shafts of the plurality of gears that constitute the reduction section 102 are all parallel, all or part of the reaction torque generated from each gear can be canceled out.

In addition to transmission via gears, the reduction unit 102 may use sliding contact transmission using a cam or the like, rolling contact transmission using a friction wheel or the like, or transmission using a belt and pulleys.

hare. Accommodating portion 103
The accommodation portion 103 accommodates the motor 101 and the reduction portion 102 .

By housing the motor 101 and the reduction section 102 in the housing section 103 , the gearbox device 100 can include both the motor 101 and the reduction section 102 . In other words, the entire power transmission system to the bullet launcher 20 can be provided in the gearbox device 100 .

For this reason, it is not necessary to provide a separate space in another portion for incorporating the motor 101 .
For example, since the grip 15 does not need to have a special structure with a space for accommodating the motor 101, the shape, design, angle, and weight of the grip 15 can be freely changed according to the user's preference. can be done. Alternatively, the grip 15 can be the grip of a real gun.

In this embodiment, the motor 101 and the housing portion 103 are provided so as to be in contact with each other. Specifically, the rear surface of the motor 101 is provided so as to be in contact with the housing portion 103 . If the accommodation portion 103 is made of a material with high thermal conductivity such as an aluminum alloy or a zinc alloy, the accommodation portion 103 functions as a heat sink, and overheating of the motor 101 can be prevented. The heat of the housing portion 103 can be released to the outside through the lower receiver 14 .
Such a configuration is suitable especially when a brushless motor is used as the motor 101 . In the brushless motor, the coils of the stator are provided in contact with the back surface of the motor, so heat can be efficiently exhausted through the housing portion 103 .

The material forming the housing portion 103 can be selected from arbitrary materials such as plastics and metals. When it is made of metal, it can be manufactured by casting such as die casting, or by forging.

The gearbox device 100 may be detachable from the air gun 1 . In the case of this embodiment, since the gearbox device 100 has the housing portion 103, the gearbox device 100 is configured as an independent device and can be easily attached and detached.

For example, when removing the gearbox device 100 from the air gun 1 , the upper receiver 13 and the lower receiver 14 are separated, and the gearbox device 100 is pulled out from the lower receiver 14 .

For example, when attaching the gearbox device 100 to the air gun 1 , the gearbox device 100 is fitted into the space provided in the lower receiver 14 . At this time, since the motor is not provided in the grip 15 as in the conventional art, there is no need to adjust the position of the gearbox device 100 . Then, the upper receiver 13 and the lower receiver 14 are coupled.

By making the gearbox device 100 detachable from the air gun 1 in this manner, replacement and repair of the gearbox device 100 can be easily performed.
In addition, since the gearbox device 100 including the motor 101 and the speed reducer 102 can be attached and detached as a unit, when the gearbox device 100 is attached to the air gun, it is not necessary to engage the gears of the motor and the speed reducer. can be worn on

Further, the gearbox arrangement 100 can be replaced with a conventional airgun gearbox arrangement. By installing the gearbox device 100 in the space of the gearbox device of the conventional air gun and connecting the electric wire for supplying power from the battery, the conventional air gun can be used without using the motor originally provided in the conventional air gun. can be used.

workman. Control board 104
The gearbox device 100 has a control board 104 for controlling the motor 101 . The control board 104 is attached to at least one surface of the housing portion 103 .
In this embodiment, as shown in FIG. 5, the control board 104 is attached to the rear surface of the housing portion 103 .

Since the motor 101 is housed in the housing portion 103, the control board 104 is also mounted on the rear surface of the housing portion 103 close to the motor 101, thereby shortening signal lines, power lines, etc., and improving reliability. can be improved. In addition, the entire power transmission system for transmitting power to the bullet launcher 20, including the control board 104, can be compactly integrated in the gearbox device 100. FIG.
Furthermore, by compactly consolidating the gearbox device 100 including the control board 104, it is possible to secure a wider space for the battery and extend the operation time of the air gun. Specifically, conventionally, the control board 104 and the battery were provided in the back tube provided at the rear part of the upper receiver 13. It becomes possible to use it as a space for a battery.

Further, in the present embodiment, the control board 104 and the housing portion 103 are provided so as to be in contact with each other. If the accommodating portion 103 is made of a highly thermally conductive material such as an aluminum alloy or a zinc alloy, the accommodating portion 103 functions as a heat sink, allowing heat generated from the control board 104 to escape. With such a configuration, malfunction due to overheating of the control board 104 can be prevented.

The control board 104 may be attached to the front, side, or bottom surface of the housing portion 103 instead of the rear surface of the housing portion 103 . Alternatively, it may be mounted in a manner spanning both the rear surface and the side surface of the housing portion 103, or the rear surface and the bottom surface.

The control method of the motor 101 by the control board 104 can be changed by the user through a user interface or the like (not shown). The user can independently change the delay time from the instruction of the trigger, the rotation torque or rotation speed, the rotation profile, and the like.

E. Grasping of Features Described in the Embodiments as Inventions The features described in the above embodiments can be understood as independent inventions. For example, from the viewpoint of configuration, the axial direction of the motor 101, the rotation control of the motor 101, the axial direction of the gear that constitutes the reduction unit 102, the configuration of the storage unit 103, the relationship between the storage unit 103 and other components, etc. , can be grasped as an independent invention. From the viewpoint of function, anti-torque countermeasures, noise or vibration or wear countermeasures, heat countermeasures, compatibility countermeasures, hobby countermeasures, etc. can be understood as independent inventions.

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

When a user pulls a trigger (not shown), a firing instruction signal is sent to the control board 104 . The control board 104 that has received the firing instruction signal controls the motor 101 to rotate.

The power of the motor 101 is transmitted to the piston 21 via the reduction section 102 .
Specifically, when the toothed portion T of the drive gear 102d and the rack gear 24 are meshed, the piston 21 moves leftward in FIG.
The movement of the piston 21 compresses the compression spring 23 .

On the other hand, the bullets stored in the magazine 17 are loaded into the loading section L at the base of the barrel 11 by the negative pressure of the cylinder 22 .

When the drive gear 102d rotates further and the toothless portion N and the rack gear 24 face each other, the constraint of the rack gear 24 is released, and the piston 21 receives the spring force of the compression spring 23, causing the piston 21 to move rightward in FIG. move to

Rightward movement of piston 21 compresses the air in cylinder 22 and creates pressure to fire the projectile.

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

(4) Summary The features of the gearbox 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 synonymous terms or terms including synonymous functions.

The gearbox device of the present invention may be supplemented with necessary functions, such as communication devices for control interfaces.

The gun of the present invention may be supplemented with optional features such as sights, safety devices, slings, and the like.

Although the gearbox device of the present invention and the air gun equipped with the gearbox device have been described as being applicable to toy guns, they are also applicable to shooting competition guns, various training guns, and model guns.

1 air gun, 11 barrel, 12 foregrip, 13 upper receiver, 14 lower receiver, 15 grip, 16 magazine, 20 bullet launcher, 21 piston, 22 cylinder, 23 compression spring, 24 rack gear, 100 gearbox device, 101 motor, 102 Speed reducer 102a Input gear 102b Intermediate gear 102c Output gear 102d Drive gear 103 Housing 104 Control board

Claims (13)

A gearbox device provided in an air gun,
a motor;
a deceleration unit that reduces the rotation speed of the motor and transmits the power of the motor to a bullet launching unit that shoots bullets;
an accommodating portion that accommodates the motor and the speed reducing portion;
a control board for controlling the motor,
The control board is attached to at least one surface of the housing,
gearbox device. The control board is provided so as to be in contact with the housing,
2. A gearbox arrangement according to claim 1. The motor is provided so as to be in contact with the housing,
2. A gearbox arrangement according to claim 1. wherein the motor is a brushless motor;
4. A gearbox arrangement according to claim 3. The housing part has thermal conductivity functioning as a heat sink,
4. A gearbox device according to claim 2 or 3. The gearbox device is detachable from the air gun,
2. A gearbox arrangement according to claim 1. In the motor, the motor rotation axis, which is the rotation axis of the motor, is vertical to the longitudinal direction of the barrel of the air gun, and the motor rotation axis is vertical when the gearbox is attached to the air gun. provided so as to be perpendicular to the
2. A gearbox arrangement according to claim 1. The deceleration unit has a gear,
the motor axis of rotation is parallel to the axis of rotation of the gear;
2. A gearbox arrangement according to claim 1. The deceleration unit has a plurality of gears,
the rotation axes of the plurality of gears are parallel to each other;
9. A gearbox arrangement according to claim 8. The motor rotates in a direction such that the counter torque generated by the rotation of the motor acts in a direction to push up the tip of the barrel of the air gun.
2. A gearbox arrangement according to claim 1. The motor rotates gradually faster at the start of rotation and gradually slower at the end of rotation.
2. A gearbox arrangement according to claim 1. a bullet launcher that shoots bullets;
a motor;
a deceleration unit that reduces the rotation speed of the motor and transmits the power of the motor to the bullet launcher;
an accommodating portion that accommodates the motor and the speed reducing portion;
a control board for controlling the motor;
a barrel through which the bullet fired from the bullet firing unit passes;
a grip for grasping by a user;
The control board is attached to at least one surface of the housing,
air gun. A gearbox device according to any one of claims 2 to 11,
air gun.

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