JPWO2005066576A1 - Air gun and control method for stopping its firing operation - Google Patents

Abstract

The present invention relates to electronic control of an air gun as a model gun, and controls a rotating wheel (sector gear) and a rack so that they do not mesh with each other in any firing operation, thereby controlling the mechanical mechanism of the gun. It is to improve reliability, prevent deterioration of the spring effect of the spring, and further to open the inside of the gun to facilitate maintenance. A rack (18) provided integrally with the piston (12), a tooth portion (33) with which the rack (18) meshes, and a toothless portion (34) with which the rack does not mesh are provided on a part of the circumference. A sector gear (25), a motor that drives the sector gear (25) via a reduction gear mechanism, a rotation reference position (40) provided on the sector gear (25), and a rotation reference position (40) are detected. The sensors (39) and (44) are provided. When the rotation reference position 40 is detected by the sensors (39) and (44) (Fig. 6(c)), the motor power is turned off and the sector gear (25 ) The sector gear (25) is stopped at the position where the toothless portion (34) and the rack (18) face each other (Fig. 6(d)), and the piston (12) is always double seated at the starting point of the firing operation. An air gun featuring.

Description

  The present invention relates to an air gun as a model gun, and more particularly to an electronic control of an air gun suitable for controlling the position of a piston after a bullet is fired to a double seat at a fixed position regardless of whether it is a single shot or a continuous shot.

There is an air gun as a model gun simulating an automatic loading rifle, which is used for toys or shooting training. Especially for shooting training, it is desired to have a shape and handling similar to a real gun. As a conventional technique of this air gun, there is one disclosed in Japanese Patent Publication No. 7-43238.
In this conventional technique, by pulling a trigger, a kind of pump consisting of a piston and a cylinder is driven by a motor, compressed air is ejected from an ejection hole, and bullets are fired by performing bullet feed in synchronization with this. Is becoming In this prior art, although the mechanism for firing the bullet is electrically driven so that it is driven by a motor, the bullet firing mechanism is performed by a mechanical mechanism such as a cam. In addition, single-shot/continuous-shot switching is also performed by a mechanical mechanism including a mechanical tappet arm, a switching lever, and the like. The power of the motor is turned on and off by turning on and off with a mechanical contact switch. Further, in this conventional technique, it is possible to switch between single-shot mode and continuous-shot mode by switching the lever. However, in the case of continuous-shot mode, as long as the trigger is continuously pulled, the motor rotates and a series of operations related to the continuous-shot mode is repeatedly performed. The operation is stopped by releasing.
In the above-mentioned conventional technique, since the power supply of the motor is turned on and off by the mechanical switch for starting and stopping the firing operation of the bullet, there is a problem in reliability because the operation is likely to be defective due to the burning of the contacts and the poor contact. .. Further, since switching between single-shot mode and continuous-shot mode is performed by a mechanism composed of a mechanical cam and a lever, malfunction is likely to occur due to wear or fatigue.
Further, in the conventional technique, it is not possible to control how many times the continuous operation is performed.
Further, in the conventional technique, there is no means for confirming whether or not there is a bullet in the magazine, and in particular, in a continuous operation and the like, there is a problem that an unnecessary air strike operation is continued without a bullet even after the final bullet is fired.
In this conventional technique, since the trigger is released at an arbitrary timing, the motor will be stopped at an arbitrary timing accordingly. Therefore, there is a problem that the rotating wheel (sector gear) also stops at an arbitrary rotation position and stops while meshing with the rack formed on the piston. If the rotating wheel (sector gear) and the rack stop while meshing, the following problems will occur.
(1) The rotating wheels and the rack are left in a rest state for a long time with stress being applied, which causes mechanical failure of the reduction gear mechanism and the piston portion.
(2) The spring is placed in a rest state for a long time while being compressed. Therefore, the spring effect of the spring is weakened.
(3) Since the rotating wheel and the rack stop while the stress is applied, the meshing of the rotating wheel and the rack cannot be easily released. For this reason, the inside cannot be easily opened when performing an internal inspection for maintenance.
The present invention solves the above-mentioned problems, and controls the rotating wheels (sector gears) and the rack so that they do not mesh with each other during any firing operation, thereby improving the reliability of the mechanical mechanism of the gun. The purpose is to prevent the spring effect of the spring from deteriorating and to open the inside of the gun to facilitate maintenance.

The gist of the invention described in claim 1 of the present invention is to provide a means for detecting an operation reference position of a drive system for driving the piston in an air gun for firing a bullet using compressed air by the piston, The air gun is characterized in that the operation of the drive system is stopped at a predetermined position when the operation reference position is detected.
Further, the gist of the invention according to claim 2 of the present invention is to provide means for detecting an operation reference position of a drive system for driving the piston in an air gun for firing a bullet by utilizing compressed air by the piston. Provided,
The present invention resides in an air gun characterized in that the operation of the drive system is stopped when the operation reference position is detected, and a double seat is always provided at a firing operation start point.
Further, the gist of the invention described in claim 3 of the present invention is an air gun that includes a cylinder and a piston housed inside the cylinder, and uses an air compressed by the cylinder and the piston to fire a bullet. , A sector gear provided with a rack integrally provided on the piston, a tooth portion with which the rack meshes and a toothless portion with which the rack does not mesh on a portion of the circumference, and the sector gear as a reduction gear mechanism. A motor driven through the motor, a rotation reference position provided on the sector gear, and a sensor for detecting the rotation reference position. When the rotation reference position is detected by the sensor, the motor is powered off. However, the present invention resides in an air gun characterized in that the sector gear is stopped at a position where the toothless portion of the sector gear and the rack face each other, and the piston is always double-seated at the firing operation start point.
Further, the gist of the invention described in claim 4 of the present invention is that the rotation reference position is detected by detecting a rotation reference position detection hole provided in a part of the drive system by a photo sensor. The air gun according to claim 3 is characterized in that.
Further, the gist of the invention described in claim 5 of the present invention is that when the detection signal is input to the microcomputer by the photosensor and the rotation reference position is detected, the microcomputer generates the OFF signal of the motor. The air gun according to claim 4 is characterized in that the power is supplied to the motor and the power of the motor is turned off.
Further, the gist of the invention described in claim 6 of the present invention is that the drive power source of the motor includes a battery, a motor, and a MOS-FET for turning on/off the power from the battery. The present invention resides in the air gun according to any one of claims 3 to 5.
Further, the gist of the invention according to claim 7 of the present invention is to provide a piston housed in a cylinder, a spring for urging the piston toward a cylinder head provided at one end of the cylinder, and the piston. A rack integrally fixed to the piston at a lower part of the rack, and a toothless portion that does not mesh with a tooth portion that meshes with the rack on an outer peripheral portion, and the rack with the tooth portion meshed with the teeth of the rack. A sector gear that moves in the opposite direction to the cylinder head against the biasing force of a spring, a motor that rotationally drives the sector gear, and a rotation reference position that is provided to detect a rotation reference position of the sector gear. The rotation reference position detection hole; and a sensor for detecting the rotation reference position detection hole; and a means for cutting off the power source of the motor when the sensor detects the rotation reference position detection hole. Is rotated by a predetermined position after the detection position is stopped and the toothless portion of the sector gear is stopped at a position facing the rack, the urging force of the spring moves the piston toward the cylinder head, and The air gun is characterized in that air compressed between a piston head provided in a piston and the cylinder head is ejected from a center hole of the cylinder head in a direction of a barrel, and a bullet is ejected through the barrel.
Further, the gist of the invention described in claim 8 of the present invention is that when the air gun detects the operation reference position and is in a firing stopped state, the gun body of the air gun is centered around a hinge and at least the piston The air gun according to claim 1 or 2, wherein the sector gear can be opened so that a part of the sector gear can be seen.
Further, the gist of the invention according to claim 9 of the present invention is that, when the air gun detects the rotation reference position and is in a firing stopped state, the gun body of the air gun is centered around a hinge and at least the piston. The air gun according to any one of claims 3 to 7, wherein a part of the sector gear can be opened so that it can be seen.
Further, the gist of the invention described in claim 10 of the present invention is to detect an operation reference position of a drive system for driving the piston in a method of controlling an air gun for firing a bullet by using compressed air by the piston. Then, the method of controlling the air gun is characterized in that the operation of the drive system is stopped at a predetermined position.
Further, the gist of the invention described in claim 11 of the present invention is to detect an operation reference position of a drive system for driving the piston in a method of controlling an air gun for firing a bullet using compressed air by the piston. Then, the operation of the drive system is stopped, and a double seat is always placed at the starting point of the firing operation.
Further, the gist of the invention described in claim 12 of the present invention is an air gun that includes a cylinder and a piston housed inside the cylinder, and uses an air compressed by the cylinder and the piston to shoot a bullet. In the control method, a rack provided integrally with the piston, a sector gear provided with a tooth portion with which the rack meshes and a toothless portion with which the rack does not mesh, on a part of the circumference, and the sector gear are decelerated. A motor driven via a gear mechanism, a rotation reference position provided on the sector gear, and a sensor for detecting the rotation reference position are provided, and the motor of the motor when the rotation reference position is detected by the sensor is provided. A method of controlling an air gun is characterized in that the power is turned off, the sector gear is stopped at a position where the toothless portion of the sector gear and the rack face each other, and the piston is always double seated at a firing operation start point. .
Further, the gist of the invention described in claim 13 of the present invention is that the rotation reference position is detected by detecting a rotation reference position detection hole provided in a part of the drive system by a photo sensor. The control method of an air gun according to claim 12 is characterized by the above.
Further, the gist of the invention according to claim 14 of the present invention is that when the detection signal is input to the microcomputer by the photosensor and the rotation reference position is detected, the OFF signal of the motor is generated by the microcomputer. The control method of the air gun according to claim 13 is characterized in that the motor is turned off and the power of the motor is turned off.
Further, the gist of the invention according to claim 15 of the present invention is to provide a piston housed in a cylinder, a spring for urging the piston toward a cylinder head provided at one end of the cylinder, and the piston. A rack integrally fixed to the piston at a lower part of the rack, and a toothless portion that does not mesh with a tooth portion that meshes with the rack at an outer peripheral portion, A sector gear that moves in the opposite direction to the cylinder head against the biasing force of a spring, a motor that rotationally drives the sector gear, and a rotation reference position that is provided to detect a rotation reference position of the sector gear. The rotation reference position detecting hole; and a sensor for detecting the rotation reference position detecting hole; and a means for cutting off the power of the motor when the sensor detects the rotation reference position detecting hole. Is rotated by a predetermined position after the detection position is stopped and the toothless part of the sector gear is stopped at a position facing the rack, the urging force of the spring moves the piston toward the cylinder head, and A method of controlling an air gun is characterized in that air compressed between a piston head provided in a piston and the cylinder head is ejected from a center hole of the cylinder head in a direction of a barrel, and a bullet is ejected through the barrel.

FIG. 1 shows an air gun as a model gun simulating an automatic loading rifle according to the present invention.
FIG. 2 is a diagram showing a bullet firing control portion according to the present invention.
FIG. 3 is an enlarged view of a control circuit portion according to the present invention.
FIG. 4 is an AA arrow view of FIG. 3 according to the present invention.
FIG. 5 shows an electronic control circuit portion according to the present invention.
FIG. 6 is a diagram for explaining the operation from setting the bullet to firing the bullet according to the present invention.
FIG. 7 shows a control block of an electronic control circuit according to the present invention.
FIG. 8 shows a more specific control circuit of FIG. 7 according to the present invention.
FIG. 9 is a control flowchart for performing a one-shot operation according to the present invention.
FIG. 10 is an open view of the gun body according to the present invention.
FIG. 11 is a control flow chart for performing a repeating operation according to the present invention.
FIG. 12 is a control flowchart for performing N-shot mode operation according to the present invention.
FIG. 13 is a control flowchart for performing a one-shot operation according to the present invention.
FIG. 14 is a control flowchart for performing a switching operation between single-shot mode and continuous-shot mode according to the present invention.
FIG. 15 is a control flow chart for performing a switching operation of single-shot mode, repeated mode, and N-shot mode according to the present invention.
FIG. 16 is another control flowchart for performing the switching operation of single-shot mode, continuous mode and N-shot mode according to the present invention.
FIG. 17 is yet another control flow chart for performing the switching operation of single-shot mode, continuous mode, and N-shot mode according to the present invention.
18 to 20 are yet another control flow chart for performing the switching operation of single-shot mode, continuous mode and N-shot mode according to the present invention.
FIG. 21 is a control flowchart for counting the number of shots in a single-shot operation according to the present invention.
FIG. 22 is a control flowchart for counting the number of shots in the single shot, continuous shot, and N repeated shots operation according to the present invention.
FIG. 23 is a view showing a magazine according to the present invention. FIG. 23(a) is a front view, FIG. 23(b) is a top view, and FIG. 23(c) is a left side view.

FIG. 1 shows an air gun as a model gun simulating an automatic loading rifle.
First, each part of the air gun shown in FIG. 1 will be briefly described. Reference numeral 1 is a gun body of the air gun, 21 is a cylindrical barrel in which a bullet is fired by passing through the inside, and 3 is a trigger which is pulled when the bullet is fired. Reference numeral 4 is a magazine (magazine), 5 is a grip, 6 is a stock, 7 is a hand guard liner, 8 is a hand carrier, and 9 is a hinge.
As shown in FIG. 23, the magazine 4 accommodates a plurality of bullets 19, and although the details of the interior are not shown, the bullets 19 are drawn out from the bullet feed hole 59 provided on the upper surface of the magazine 4 by a spring. It has become. On the side surface of the magazine 4, a bullet presence/absence detection lever 58 protrudes from a window frame 60 for detecting the presence/absence of the bullet 19, and when there is a bullet in the magazine 4, the bullet presence/absence detection lever 58 goes up, When there are no ammunition, it moves downward. This bullet presence/absence detection lever 58 contacts the bullet presence/absence detection switch pressing member 42 shown by the broken line in FIG. 23, and the movement of the bullet presence/absence detection lever 58 causes the bullet presence/absence detection switch 41 shown in FIG. It can detect whether or not there is a bullet. In other words, the bullet presence/absence detection switch pressing member 42 is biased downward by a spring (elastic member) not shown, and resists the biasing force of the spring when the bullet presence/absence detection lever 58 is raised upward. Is pushed upward by the bullet presence/absence detection lever 58, and when the bullet presence/absence detection lever 58 goes down, the bullet presence/absence detection switch pressing member 42 is pushed downward by the urging force of the spring, and the bullet presence/absence detection switch 41 is pushed. The contact is pushed downward to close the contact. The ON/OFF signal of the contact of the bullet presence/absence detection switch 41 is input to the control circuit and is used for the control of the empty shot prevention described later.
Further, as will be described later, the air gun according to the present invention can open the gun body 1 as shown in FIG. 10 with the hinge 9 as a rotation axis for internal maintenance of the gun.
FIG. 2 shows the inside of the gun by a partially cutaway view of the bullet firing control part. Reference numeral 10 is a cylinder that houses a piston 12 therein, 11 is a cylinder head that is provided at one end of the cylinder 10 and has a hole 57 through which compressed air can pass in the center, 12 is a piston that reciprocates inside the cylinder 10, and 13 is It is a piston head provided at one end of the piston 12. An O-ring 14 is provided on the outer circumference of the piston head 13 in order to prevent air from leaking from the space 62 between the piston head 13 and the cylinder head 11 to the piston 12 side, which is surrounded by the cylinder 10. Reference numeral 15 is a spring for pressing the piston 12 to the left side, 16 is a piston movement restricting member for restricting the piston 12 from freely rotating about the axis of the cylinder 10 and for properly engaging the rack 18 and the sector gear 25, Reference numeral 17 is a mandrel provided so that the spring 15 is located at the axial center of the piston 12, 18 is a rack provided at the lower part of the piston 12, and meshes with the teeth 33 of the sector gear 25, 19 is a bullet, and 20 is a bullet 19. A chamber, which is a portion for supplying bullets, 21 is a barrel, which is a cylinder through which the fired bullets 19 pass, 22 is a motor that rotationally drives a sector gear 25, 23 is a motor shaft, and 24 is a reduction gear. The operation of the components indicated by reference numerals 10 to 25 will be described in detail later.
An electronic control circuit 47 is composed of a microcomputer 49 and other electronic parts. Reference numeral 27 denotes a battery used as a drive power source for the motor 22 and a control power source for the electronic control circuit 47. Reference numeral 28 is a motor power supply control unit that is turned on/off by an ON/OFF command from the microcomputer 49, and turns on/off the electric power supplied from the battery 27 to the motor 22. The motor power supply control unit 28 is provided with a switch, and a semiconductor switch is used for this switch in consideration of controllability and life. In the present invention, a MOS-FET (MOS field effect transistor) is used in consideration of power saving. To do. Reference numerals 29 and 30 denote power supply lines for supplying electric power from the battery 27 to the motor 22. Reference numeral 31 is a control line for transmitting an ON/OFF signal from the electronic control circuit 47 to the motor power supply control unit 28. Reference numeral 32 is a control circuit housing case that houses a speed reduction mechanism that decelerates rotation from the motor 22 to rotate the sector gear 25 and an electronic control circuit 47.
FIG. 3 is an enlarged view of the control circuit portion.
In FIG. 3, 33 is a tooth portion of the sector gear 25, and 34 is a toothless portion of the sector gear 25. As described above, the sector gear 25 has the tooth portion 33 and the toothless portion 34, and the tooth portion 33 meshes with the rack 18. When the rack 18 is in a position facing the toothless portion 34, the piston 12 is free from the sector gear 25 and is urged toward the cylinder head by the pressing of the spring 15. Reference numeral 35 is a first control circuit printed board on which an electronic control circuit 47 is mounted, and 36 is a second control circuit printed board. A trigger switch 37 is turned on by pulling the trigger 3. Reference numeral 38 is a signal line for transmitting a signal between the first control circuit printed circuit board 35 and the second control circuit printed circuit board 36. The first control circuit printed circuit board 35 and the second control circuit printed circuit board 38. It is formed of a conductor having strength for keeping the position and posture of 36 as shown in FIG. Reference numeral 39 is a photodiode, which forms a photo sensor for detecting the rotation reference position of the sector gear 25 in combination with the photo transistor 44. Reference numeral 40 is a rotation reference position detecting hole of the sector gear 25. Reference numeral 41 denotes a bullet presence/absence detection switch for detecting whether or not the bullet 19 is in the magazine 4. Reference numeral 42 is a pressing member for a bullet presence/absence detection switch. When there is a bullet 19 in the magazine 4, the bullet presence/absence detection switch pressing member 42 is pushed up by the bullet presence/absence detection lever 58 and the bullet presence/absence detection switch 41 is in the OFF state. When there is no bullet, the bullet presence/absence detection lever 58 is lowered, and a spring (elastic member) (not shown) pushes down the bullet presence/absence detection switch pressing member 42 to turn on the bullet presence/absence detection switch 41. Reference numeral 43 denotes a first connector mounted on the first control circuit printed circuit board 35, to which a signal line from a select switch 51 described later is connected.
FIG. 4 is a view on arrow AA of FIG. Reference numeral 44 denotes a phototransistor, which is paired with the photodiode 39 to form a photosensor for detecting the rotation reference position of the sector gear 25. The photodiode 39 and the phototransistor 44 face each other with the sector gear 25 interposed therebetween as shown in FIG. 4, and the sector gear 25 can rotate between the photodiode 39 and the phototransistor 44, and the sector shown in FIG. When located in the rotation reference position detecting hole 40 of the gear 25, the light of the photodiode 39 is received by the phototransistor 44 through the rotation reference position detecting hole 40.
Reference numerals 45 and 46 are attachment holes for attaching the control circuit housing case 32 to the gun body 1. Reference numeral 47 indicates an electronic control circuit.
FIG. 5 shows the outer shape of the electronic control circuit 47. Reference numeral 48 is a second connector to which a signal line for controlling the motor power supply control unit 28 is connected. 49 is a microcomputer. This electronic control circuit 47 is equipped with a microcomputer 49 and controls the firing operation of the gun as will be described later. The electronic control circuit 47 is further equipped with a trigger switch 37, a photodiode 39, a phototransistor 44, a bullet presence/absence detection switch 41, a first connector 43, and the like.
FIG. 5A is a bird's-eye view of the entire electronic control circuit 47. FIG. 5(b) is a front view seen from the left front side of FIG. 5(a), and FIG. 5(c) is a view indicated by an arrow B in FIG. 5(b). The electronic control circuit 47 fits the sides of the first control circuit printed circuit board 35 and the second control circuit printed circuit board 36 so as to slide into the grooves 55 provided in the inner wall of the control circuit housing case 32. Positioning is done by storing. This positioning is important for determining the relative positions of the photodiode 39, the phototransistor 44, and the sector gear 25.
Next, the bullet firing operation will be described. FIG. 6 is a view for explaining the operation from setting the bullet 19 to firing it.
In FIG. 6, the cylinder 10 has a cylinder head 11 at its right end, and a piston 12 is housed inside the cylinder head 11. The piston 12 is provided with a rack 18 at a lower portion thereof so as to mesh with the tooth portion 33 of the sector gear 25. The spring 15 is arranged so that one end thereof abuts on the bottom portion 61 of the cylinder and the other end thereof pushes the piston head 13 to the right. A piston head 13 is provided at the right end of the piston 12, and when the bullet 19 is fired, the air in the space 62 surrounded by the cylinder 10, the piston head 13, and the cylinder head 11 is discharged from the center hole 57 of the cylinder head 11 to the barrel 21. It is designed to be pushed in the direction of The sector gear 25 is adapted to be driven by reducing the rotation of the motor 22 via a bevel gear provided at the tip of the motor shaft 23 and a reduction gear 24.
FIG. 6A shows a state immediately after the sector gear 25 and the rack 18 mesh with each other, and shows a state immediately before the piston 12 starts to move to the left. The sector gear 25 rotates counterclockwise in FIG. At this time, the bullet 19 is supplied from a magazine 4 (not shown) and set in the chamber 20 located between the cylinder head 11 and the barrel 21. The photodiode 39 and the phototransistor 44 are set at the positions shown in FIG. 6(a). At this time, the rotation reference position detecting hole 40 of the sector gear 25 is at the position shown in FIG. 6A, and therefore the rotation reference position of the sector gear 25 is not detected.
FIG. 6B shows a state in which the sector gear 25 meshes with the rack 18 and further rotates against the pressing force of the spring 15. At this time, the piston 12 moves to the left and a space 62 is formed between the piston 12 and the cylinder head 11, and the space 62 is replenished with air indicated by a dotted arrow 56. Although not shown in FIG. 6, the piston head 13 is provided with a check valve, and when the piston 12 retracts to the left side, it passes through this check valve as shown by a dotted arrow 56 in FIG. 6(b). It is designed to be replenished with air. The check valve provided in the piston head 13 (not shown) operates so as to prevent the passage of air when the piston 12 moves to the right (in the case of FIG. 6(d)).
FIG. 6(c) shows that when the sector gear 25 reaches a position near the final position where it meshes with the rack 18 and the sector gear 25 rotates further, the teeth 33 of the sector gear 25 and the teeth of the rack 18 do not mesh with each other. Shows the state of. At this time, the rotation reference position detecting hole 40 of the sector gear 25 is rotated to the position of the photo sensor composed of the photodiode 39 and the photo transistor 44, and the rotation reference position of the sector gear 25 is detected by the photo sensor. When the electronic reference circuit 47 sends a motor OFF signal for stopping the motor 22 to the motor power supply control unit 28 based on the detection signal of the rotation reference position, the power supply of the motor 22 is cut off and the motor 22 is decelerated and stopped. In this case, the sector gear 25 rotates to some extent and stops due to inertia and friction loss of the motor 22 and the reduction gear mechanism. Since the degree of rotation and stop depends on the actual structure, how the positional relationship between the tooth portion 33 of the sector gear 25 and the rotation reference position detecting hole 40 in FIG. 6C is determined. Since it is difficult to obtain an accurate value by calculation, it will be decided on a trial basis whether to do it or not.
FIG. 6D shows a state in which the sector gear 25 is stopped in this way. At this time, the toothless portion 34 of the sector gear 25 is opposed to the rack 18, and the sector gear 25 and the rack 18 are disengaged from each other so that the piston 12 is released from the pressure by the sector gear 25 and the rack 18 and the spring is released. It is urged to the right by pressing 15. At this time, the air in the space 62 between the piston head 13 and the cylinder head 11 is compressed and strongly ejected from the center hole 57 of the cylinder head 11 toward the barrel 21. As a result, the bullet 19 is pushed out rightward in the barrel 21 and the bullet 19 is fired.
As described above, when the rotation reference position of the sector gear 25 is detected and the firing operation is stopped, the toothless portion 34 of the sector gear 25 and the rack 18 can always be reliably stopped so as to face each other. Then, the piston 12 always double seats at the position where the firing operation starts.
It should be noted that even if the rotation reference position of the sector gear 25 is detected in FIG. 6(c), if the motor OFF signal for stopping the motor 22 is not issued from the electronic control circuit 47 to the motor power supply control unit 28, it continues. Then, the operation shown in FIG. 6 is repeated to perform the repeating operation.
Next, the configuration of the electronic control circuit 47 that controls the firing operation of the gun will be described.
FIG. 7 shows a control block of the electronic control circuit 47. 49 is a microcomputer. To the microcomputer 49, the signal of the bullet presence/absence detection switch 41, the signal of the trigger switch 37, the single/repeated and single/N-repeated switching means 52, the signal of the select switch 51, the rotation of the sector gear 25 from the rotation reference position detection unit 50. The reference position detection signal is input, and the motor ON/OFF signal is output to the motor power supply control unit 28 via the amplifier 53. Reference numerals 43 and 48 described above indicate connectors. When the motor ON signal is output from the microcomputer 49, the semiconductor switch of the motor power control unit 28 is turned on, the voltage of the battery 27 is applied to the motor via the power control unit 28, and the motor 22 is supplied with power. However, when the motor OFF signal is output from the microcomputer 49, the power from the battery 27 is cut off by the power supply control unit 28 and stopped. Further, reference numeral 50 is a rotation reference position detection unit composed of a photo sensor including a photodiode 39 and a photo transistor 44 and a sector gear 25. The detailed operation of the microcomputer 49 will be described later with reference to the control flow chart in FIG.
The configuration of the electronic control circuit 47 will be described in more detail with reference to FIG.
In FIG. 8, reference numeral 49 is a microcomputer, which is operated by the control power supply Vcc generated from the battery 27. The light emitted from the photodiode 39 is received by the phototransistor 44 through the rotation reference position detecting hole 40 of the sector gear 25. The output of the phototransistor 44 is amplified by the operational amplifier 54 and input to the microcomputer 49. When the phototransistor 44 receives the light emitted from the photodiode 39 through the rotation reference position detecting hole 40 of the sector gear 25, the phototransistor 44 is turned on and the output of the operational amplifier 54 also changes to obtain a rotation reference position detection signal.
A contact signal from the trigger switch 37 is input to the microcomputer 49, and it is possible to detect whether or not the trigger 3 is pulled. Further, it is possible to detect whether or not there is a bullet 19 in the magazine 4 by inputting a contact signal of the bullet presence/absence detection switch 41. Further, the single-shot/repeated and single-shot/N-repeated switching means 52 are formed so that a jumper wire can be inserted on the printed circuit board of the control circuit. Depending on whether or not the jumper wire is inserted into the switching means 52, for example, when the jumper wire is inserted, it is possible to switch to single-shot/repeated firing, and when the jumper wire is not inserted, it is possible to switch to single-shot/N-repeated firing. It is needless to say that the distinction between the single shot/repeated shot and the single shot/N repeated shot depending on the insertion state of the jumper wire may be opposite to the above-described example.
51 is a select switch, which is a three-point switch. Each contact position can be switched to "single shot""repeatedshot""safety". If "safe" is selected here, the firing operation is not performed even if the trigger 3 is pulled.
Reference numeral 53 is an amplifier for amplifying the motor ON/OFF signal output from the microcomputer 49. The output of the amplifier 53 is input to the gate of the MOS-FET of the motor power control unit 28. The MOS-FET is provided between the battery 27 and the motor 22 and functions as a switch for turning on/off the voltage of the motor 22. Therefore, when the MOS-FET is turned on by the motor ON signal from the microcomputer 49 and a voltage is applied to the motor 22, electric power is supplied from the battery 27 and the motor 22 is rotationally driven. Further, when the MOS-FET is turned off in response to the motor OFF signal from the microcomputer 49, the electric power from the battery 27 of the motor 22 is cut off and the motor 22 stops rotating. A reduction gear 24 is combined with the output shaft of the motor 22 to rotate the sector gear 25.
(First embodiment of control)
Next, bullet firing control will be described in detail using a control flowchart.
FIG. 9 shows the first embodiment of the control, and is a flow chart for controlling the single-shot operation.
First, control is started in step 100, and it is checked in step 101 whether the trigger switch 37 is pressed. If the trigger switch 37 has not been pressed, the watchdog timer WDT is cleared in step 102 and the process returns to step 101.
The watch dog timer WDT is configured such that when the microcomputer 49 is operating normally, the watch dog timer WDT is periodically reset and no error signal is output. However, when the microcomputer 49 becomes abnormal, The watchdog timer WDT is not reset regularly, and an error signal is issued to stop the safety device. The timer value of the watchdog timer WDT is set as, for example, 1000 ms at the initial stage when the microcomputer 49 is powered on. Since the watchdog timer is a well-known technique, its explanation is omitted here.
When it is detected in step 101 that the trigger switch 37 is pressed, it is checked in step 103 whether there is a bullet 19 in the magazine 4. This is executed by inputting a signal from the bullet presence/absence detection switch 41 to the microcomputer 49 and checking whether the signal is ON or OFF. When there is a bullet 19 in the magazine 4, the bullet presence/absence detection switch 41 is pushed upward by the bullet presence/absence detection switch pressing member 42 to turn off the bullet presence/absence detection switch 41.
When it is detected in step 103 that there is no bullet 19 in the magazine 4, the process proceeds to step 104, and the power source of the motor 22 is turned off. At this time, the microcomputer 49 outputs a motor OFF signal to the signal amplifier 53, and the amplifier 53 amplifies the signal and sends it to the motor power supply controller 28. Upon receiving this signal, the motor power supply control unit 28 cuts off the power supplied from the battery 27 to the motor 22 with a switch. A semiconductor switch can be used for the switch used for the motor power supply controller 28. Although a bipolar transistor can be used as the semiconductor switch, it is preferable to use a MOS-FET from the viewpoint of power saving. The life of the battery 27 can be extended by using a MOS-FET (MOS field effect transistor).
Next, the procedure proceeds to step 105, and after waiting for 20 ms, the procedure returns to step 101. This waiting time is provided to stabilize the control, and is not limited to 20 ms.
When it is detected in step 103 that there is a bullet 19 in the magazine 4, the process proceeds to step 106 and the motor power source is turned on. At this time, the microcomputer 49 outputs a motor power ON signal to the signal amplifier 53, and the amplifier 53 amplifies the signal and sends it to the motor power controller 28. Upon receiving this signal, the motor power supply control unit 28 turns on the MOS-FET and supplies power from the battery 27 to the motor 22. As a result, the motor 22 starts to rotate, and the sector gear 25 rotates via the reduction mechanism such as the motor shaft 23 and the reduction gear 24.
Next, at step 107, it is checked whether the rotation reference position of the sector gear 25 is detected. When the rotation reference position detecting hole 40 of the sector gear 25 of the sector gear 25 passes through the position where the photo sensor composed of the photodiode 39 and the phototransistor 44 is located, the light from the photodiode 39 causes the rotation reference position of the sector gear 25. The light passes through the detection hole 40, is received by the phototransistor 44, is amplified by the operational amplifier 54, and is input to the microcomputer 49 to be detected. When the photo sensor is not at the position of the rotation reference position detecting hole 40, the photo transistor 44 does not receive this light, so that the rotation reference position detection signal is not input to the microcomputer 49. At the beginning of the rotation of the motor 22, the sector gear 25 is in the rotation position as shown in FIG. 6(d) and FIG. 6(a) before the engagement with the rack 18, and the photo sensor is for detecting the rotation reference position. Since the hole 40 is not located, the rotation reference position of the sector gear 25 is not detected. If the rotation reference position of the sector gear 25 is not detected, the process returns to step 106 and steps 106 and 107 are repeated until the rotation reference position of the sector gear 25 is detected.
When the rotation reference position of the sector gear 25 is detected in step 107, the process proceeds to step 108 and a signal for turning off the motor power is output. At this time, the rotation reference position detecting hole 40 of the sector gear 25 is at the position of the photo sensor as shown in FIG. 6(c). At this time, the microcomputer 49 outputs a motor OFF signal to the signal amplifier 53, and the amplifier 53 amplifies the signal and sends it to the motor power supply controller 28. Upon receiving this signal, the motor power supply control unit 28 cuts off the power supplied from the battery 27 to the motor 22 with the power switch.
The motor 22 whose power is cut off does not stop immediately but rotates to some extent by inertia and stops at the position shown in FIG. 6(d). It is important that the stop position of the sector gear 25 is a position where it does not engage with the rack 18. Considering the case of maintaining the gun, it is desirable that the gun body 1 be rotated about the hinge 9 and opened so that the inside can be inspected as shown in FIG. For example, the stop position of the sector gear 25 can be set to a position where it does not engage with the rack 18, and it can be easily opened as shown in FIG. When the sector gear 25 and the rack 18 are in mesh with each other, the sector gear 25 and the rack 18 are in a stressed state and cannot be easily opened. However, in the present embodiment, such a state can be avoided.
The rotation amount from the detection of the rotation reference position of the sector gear 25 to the stop of the motor 22 varies depending on the inertia of the motor 22 and the friction loss of the gear mechanism. However, if the inertia of the motor 22 and the gear mechanism are determined, the rotation amount is almost the same. Since the rotation amount is also determined, the rotation reference position detecting hole 40 can be fitted so that the rotation amount is measured in the prototype and the sector gear 25 and the rack 18 are stopped at a position where they do not mesh with each other. Although the stop position also changes depending on the voltage fluctuation of the battery 27, if a safety device is provided such as detecting the voltage of the battery 27 and stopping the operation when the voltage falls below a predetermined threshold, the fluctuation range of the stop position can be further increased. It can be kept small. Regarding the voltage drop of the battery 27, it is more preferable to provide a display such as a message prompting charging before the battery voltage reaches the threshold value or when the battery voltage reaches the threshold value.
After outputting a signal for turning off the motor power source in step 108, the process proceeds to step 109 to check whether the trigger switch 37 is on. When the trigger switch 37 is ON, the process proceeds to step 110, the watchdog timer is reset, and the process returns to step 109.
When it is detected in step 109 that the trigger switch 37 is turned off, the process proceeds to step 105, the process returns to step 101 after the waiting time of 20 ms, and the above operation is continued thereafter.
According to the operation shown in the above flow chart, the single-shot operation can be performed by pulling the trigger 3 once, and the single-shot operation is performed similarly when the trigger 3 is next drawn. It is possible to perform a single-shot operation in which one bullet is fired at.
According to the embodiment of the present invention, the rotation reference position of the sector gear 25 is detected and the single-shot operation is stopped, so that the operation can be reliably stopped at a position where the sector gear 25 and the rack 18 do not mesh with each other. Therefore, the gun body 1 can be easily opened as shown in FIG. 10, and the internal maintenance becomes easy. Further, since the operation can be stopped at a position where the sector gear 25 and the rack 18 do not mesh with each other, the spring 15 can be kept in a stress-free state when the gun is stored, and deterioration of the elasticity of the spring 15 can be suppressed. You can Further, since the operation can be stopped at a position where the sector gear 25 and the rack 18 do not mesh with each other, the rack 18 and the piston 12 are not subjected to excessive stress when the gun is stored and the reliability of the reduction mechanism and the piston portion is improved. Can be made. Further, according to the embodiment, the operation can be stopped when the magazine 4 is depleted of bullets 19, so that an unnecessary empty shooting operation is not performed.
(Second Embodiment of Control)
FIG. 11 shows a second embodiment of control, and is a flow chart for controlling the continuous operation.
First, control is started in step 120, and it is checked in step 121 whether the trigger switch 37 is pressed. If the trigger switch 37 is not pressed, the watchdog timer WDT is cleared in step 122 and the process returns to step 121.
When it is detected in step 121 that the trigger switch 37 is pressed, it is checked in step 123 whether there is a bullet 19 in the magazine 4. This is executed by inputting a signal from the bullet presence/absence detection switch 41 to the microcomputer 49 and checking whether the signal is ON or OFF. When there is a bullet 19 in the magazine 4, the bullet presence/absence detection switch 41 is pushed upward by the bullet presence/absence detection switch pressing member 42 to turn off the switch.
When it is detected in step 123 that there is no bullet 19 in the magazine 4, the process proceeds to step 124, and the power source of the motor 22 is turned off. At this time, the microcomputer 49 outputs a motor OFF signal to the signal amplifier 53, and the amplifier 53 amplifies the signal and sends it to the motor power supply controller 28. Upon receiving this signal, the motor power supply control unit 28 cuts off the power supplied from the battery 27 to the motor 22 with the MOS-FET.
Next, the process proceeds to step 125, and after waiting for 20 ms, the process returns to step 121. This waiting time is provided to stabilize the control, and is not limited to 20 ms.
When it is detected in step 123 that there is a bullet 19 in the magazine 4, the process proceeds to step 126 and the motor power supply is turned on. At this time, the microcomputer 49 outputs a motor power ON signal to the signal amplifier 53, and the amplifier 53 amplifies the signal and sends it to the motor power controller 28. Upon receiving this signal, the motor power supply control unit 28 turns on the MOS-FET and supplies power from the battery 27 to the motor 22. As a result, the motor 22 starts to rotate, and the sector gear 25 rotates via the reduction mechanism such as the motor shaft 23 and the reduction gear 24.
Next, at step 127, it is checked whether the rotation reference position of the sector gear 25 is detected. If the rotation reference position of the sector gear 25 is not detected, the process returns to the beginning of step 127 and step 127 is repeated until the rotation reference position of the sector gear 25 is detected.
When the rotation reference position of the sector gear 25 is detected in step 127, the process proceeds to step 128, and when the trigger switch 37 is not turned on in step 128, the process proceeds to step 129 and a signal for turning off the motor power is output. At this time, the rotation reference position detecting hole 40 of the sector gear 25 is at the position of the photo sensor as shown in FIG. 6(c). At this time, the microcomputer 49 outputs a motor OFF signal to the signal amplifier 53, and the amplifier 53 amplifies the signal and sends it to the motor power supply controller 28. Upon receiving this signal, the motor power supply control unit 28 cuts off the power supplied from the battery 27 to the motor 22 with the power switch.
After outputting a signal to turn off the motor power in step 129, the process proceeds to step 125, returns to step 121 after a waiting time of 20 ms, and continues the above operation thereafter.
When the trigger switch 37 is ON in step 128, the process proceeds to step 130, and it is checked whether or not there is a bullet 19 in the magazine 4. When it is detected that there is a bullet 19 in the magazine 4, the routine proceeds to step 131, the watchdog timer WDT is cleared, and the routine returns to step 127.
When it is detected in step 130 that there is no bullet 19 in the magazine 4, the process proceeds to step 129, and the power source of the motor 22 is turned off. After outputting a signal to turn off the motor power source in step 129, the process proceeds to step 125, returns to step 101 after a waiting time of 20 ms, and continues the above operation thereafter.
According to the present embodiment, the bullet 19 can be continuously fired while the trigger 3 is pulled, and when the firing is stopped, the trigger 3 is released so that the sector gear 25 is released after the trigger 3 is released. The rotation reference position of is detected and the stop operation is started. Therefore, the last stop position of the continuous fire can be managed with high accuracy as in the single-shot operation of the first embodiment, and the sector gear 25 and the rack 18 can always be stopped without meshing.
Therefore, similarly to the first embodiment, the gun body 1 can be easily opened as shown in FIG. 10, and the internal maintenance becomes easy. In addition, since the operation can be stopped at a position where the sector gear 25 and the rack 18 do not mesh with each other, the spring 15 can be kept in a stress-free state when the gun is stored, and deterioration of the elasticity of the spring 15 can be suppressed. You can Further, since the operation can be stopped at a position where the sector gear 25 and the rack 18 do not mesh with each other, the rack 18 and the piston 12 are not subjected to excessive stress when the gun is stored and the reliability of the reduction mechanism and the piston portion is improved. Can be made Further, according to the embodiment of the present invention, the operation can be stopped when there is no bullet 19 in the magazine 4, and no useless empty shooting operation is performed.
(Third Embodiment of Control)
FIG. 12 shows a third embodiment of control, and is a flowchart of N-shot control in which N-shot operation can be performed. N can be any positive integer greater than or equal to 2. The present inventor manufactured N as 3, but not limited to this.
First, the control is started in step 140, and it is checked in step 141 whether the trigger switch 37 is pressed. If the trigger switch 37 is not pressed, the watchdog timer WDT is cleared in step 122 and the process returns to step 121.
When it is detected in step 141 that the trigger switch 37 is pressed, it is checked in step 143 whether or not there is a bullet 19 in the magazine 4. This is executed by inputting a signal from the bullet presence/absence detection switch 41 to the microcomputer 49 and checking whether the signal is ON or OFF. When there is a bullet 19 in the magazine 4, the bullet presence/absence detection switch 41 is pushed upward by the bullet presence/absence detection switch pressing member 42 to turn off the switch.
When it is detected in step 143 that there is no bullet 19 in the magazine 4, the process proceeds to step 144, and the power source of the motor 22 is turned off. At this time, the microcomputer 49 outputs a motor OFF signal to the signal amplifier 53, and the amplifier 53 amplifies the signal and sends it to the motor power supply controller 28. Upon receiving this signal, the motor power supply control unit 28 cuts off the power supplied from the battery 27 to the motor 22 with the MOS-FET.
Next, the procedure proceeds to step 145, and after waiting for 20 ms, the procedure returns to step 141. This waiting time is provided to stabilize the control, and is not limited to 20 ms.
When it is detected in step 143 that there is a bullet 19 in the magazine 4, the process proceeds to step 146 and N is set in the counter CNT1. N is the number of consecutive fires and is a positive integer value of 2 or more.
Next, in step 147, the motor power is turned on. At this time, the microcomputer 49 outputs a motor power ON signal to the signal amplifier 53, and the amplifier 53 amplifies the signal and sends it to the motor power controller 28. Upon receiving this signal, the motor power supply control unit 28 turns on the MOS-FET and supplies power from the battery 27 to the motor 22. As a result, the motor 22 starts to rotate, and the sector gear 25 rotates via the reduction mechanism such as the motor shaft 23 and the reduction gear 24.
Next, at step 148, it is checked whether the rotation reference position of the sector gear 25 has been detected. If the rotation reference position of the sector gear 25 is not detected, the process returns to the beginning of step 148 and step 148 is repeated until the rotation reference position of the sector gear 25 is detected.
When the rotation reference position of the sector gear 25 is detected in step 148, the process proceeds to step 149, and in step 149, it is checked whether or not there is a bullet 19 in the magazine 4. When it is detected that there is no bullet 19 in the magazine 4, the routine proceeds to step 129, where the motor 22 is turned off. After outputting a signal to turn off the motor power source in step 129, the process proceeds to step 125, returns to step 101 after a waiting time of 20 ms, and continues the above operation thereafter.
When it is detected in step 149 that there is a bullet 19 in the magazine 4, the process proceeds to step 151, and 1 is subtracted from the value of the counter CNT1. Check if the result of subtracting 1 is 0. If it is not 0, the process returns to step 148 and the processes of steps 148 to 151 are repeated until it becomes 0.
When it is detected in step 151 that the value of the counter CNT1 has become 0, the process proceeds to step 152 to turn off the power of the motor 22.
Next, in step 153, if the trigger switch 37 is ON, the watchdog timer WDT is cleared and the process returns to the beginning of step 153.
If the trigger switch 37 is not ON, the process proceeds to step 145, and after waiting 20 ms, the process returns to step 141, and the above operation is continued thereafter.
According to the present embodiment, it is possible to perform an arbitrary number of N-shots, and it is possible to interrupt the N-shot operation by releasing the trigger 3 during the N shots. Further, the last operation can be stopped by detecting the rotation reference position of the sector gear 25, as in the single-shot operation of the first embodiment. Therefore, the last stop position of N-shot can be managed with high accuracy as in the single-shot operation of the first embodiment, and the sector gear 25 and the rack 18 can always be stopped in a state where they do not mesh with each other. Therefore, similarly to the first embodiment, the gun body 1 can be easily opened as shown in FIG. 10, and the internal maintenance becomes easy. In addition, since the operation can be stopped at a position where the sector gear 25 and the rack 18 do not mesh with each other, the spring 15 can be kept in a stress-free state when the gun is stored, and deterioration of the elasticity of the spring 15 can be suppressed. You can Further, since the operation can be stopped at a position where the sector gear 25 and the rack 18 do not mesh with each other, the rack 18 and the piston 12 are not subjected to excessive stress when the gun is stored and the reliability of the reduction mechanism and the piston portion is improved. Can be made Further, according to the embodiment of the present invention, the operation can be stopped when there is no bullet 19 in the magazine 4, and no useless empty shooting operation is performed.
(Fourth Embodiment of Control)
FIG. 13 shows a fourth embodiment of the control capable of switching the single-shot mode and the continuous-shot mode. The single-shot operation is based on the first embodiment, and the single-shot operation is based on the second embodiment.
First, in step 160, the control is started, and in step 161, it is checked whether or not the trigger switch 37 is pressed. If the trigger switch 37 has not been pressed, the watchdog timer WDT is cleared in step 162 and the process returns to step 161.
When it is detected in step 161 that the trigger switch 37 is pressed, it is checked in step 163 whether or not there is a bullet 19 in the magazine 4. This is executed by inputting a signal from the bullet presence/absence detection switch 41 to the microcomputer 49 and checking whether the signal is ON or OFF.
When it is detected in step 163 that there is no bullet 19 in the magazine 4, the process proceeds to step 164 and the motor 22 is turned off. At this time, the microcomputer 49 outputs a motor OFF signal to the signal amplifier 53, and the amplifier 53 amplifies the signal and sends it to the motor power supply controller 28. Upon receiving this signal, the motor power supply control unit 28 cuts off the power supplied from the battery 27 to the motor 22 with the MOS-FET.
Next, the process proceeds to step 165, and after waiting for 20 ms, the process returns to step 161. This waiting time is provided to stabilize the control, and is not limited to 20 ms.
If it is detected in step 163 that there is a bullet 19 in the magazine 4, the process proceeds to step 166 to check whether it is a single shot or a continuous shot.
The selection switch 51 is used to switch between single-shot mode and continuous-shot mode. The select switch 51 is provided on the side surface of the gun body 1 as shown in FIG. As shown in FIG. 8, the select switch 51 is a changeover switch having contacts on a single-shot side, a continuous-shot side, and a safety side. When switched to the single-shot side, +5V is input to the microcomputer 49, and when switched to the continuous-shot side, -5V is input to the microcomputer. When it is input to 49 and is input to the safe side, 0 V is input to the microcomputer 49. The microcomputer 49 determines the single shot or the continuous shot based on these three values. Note that the safe side does not fire. Needless to say, the combination of these three values is not limited to this embodiment.
If it is determined in step 166 that it is a single shot, the process proceeds to step 167. In step 167, the single-shot operation of the block S1 shown by the broken line in FIG. 9 is performed. When step 167 is exited, the process proceeds to step 165, the process returns to step 161 after the waiting time of 20 ms, and the above operation is continued thereafter.
If it is determined in step 166 that the fire is repeated, the process proceeds to step 168. In step 168, the single-shot operation of the block C1 shown by the broken line in FIG. 11 is performed. When step 167 is exited, the process proceeds to step 165, the process returns to step 161 after the waiting time of 20 ms, and the above operation is continued thereafter.
According to the present embodiment, it is possible to easily switch between single-shot mode and continuous-shot mode. Moreover, since the single-shot operation is based on the first embodiment and the single-shot operation is based on the second embodiment, the rotation reference position of the sector gear 25 is detected and stopped at the end of the single-shot or continuous operation. . Therefore, the effects of the first and second embodiments can also be achieved together.
(Fifth Embodiment of Control)
FIG. 14 shows a fifth embodiment of the control capable of switching the operation between the single-shot mode and the N-shot mode. The single-shot operation is based on the first embodiment, and the N-shot operation is based on the third embodiment. The operation flow of FIG. 14 is similar to that of FIG. 13 which is the fourth embodiment. The difference is that in the third embodiment of FIG. 13, step 166 determines whether it is a single shot or continuous shot, and step 168 executes the continuous shot processing of block C1 shown by the broken line in FIG. In the present embodiment shown in FIG. 14, step 186 determines whether it is a single shot or N consecutive shots, and step 188 executes the N consecutive shot processing of the block N1 shown by the broken line in FIG. The determination of the switching between the single-shot mode and the N-shot mode in step 186 is executed by fetching the switching state of the select switch 51 into the microcomputer 49. The other processing is the same as in FIG. That is, steps 160 to 165 and 167 correspond to steps 180 to 185 and 187, respectively.
According to the present embodiment, it is possible to easily switch between single-shot mode and N-shot mode. Moreover, since the single-shot operation is based on the first embodiment and the N-shot operation is based on the third embodiment, the rotation reference position of the sector gear 25 is detected at the end of the single-shot or N-shot operation. Stop. Therefore, the effects of the first and third embodiments can also be achieved together.
(Sixth Embodiment of Control)
FIG. 15 shows a sixth embodiment of the control capable of switching the operation between the single-shot mode, the continuous-shot mode, and the N-shot mode. The single-shot operation is based on the first embodiment, the repeated operation is based on the second embodiment, and the N-shot operation is based on the third embodiment. In the operation flow of FIG. 15, first, the single-shot/repeated and the single-shot/N-shot are separated, and then the single-shot/repeated operation of the fourth embodiment shown in block A1 of FIG. Or the single-shot/N-shot mode operation of the fifth embodiment shown in block B1 of FIG. 14 is performed.
First, in step 190, the control is started, and in step 191, it is determined whether it is a single shot/repeated shot or a single shot/N repeated shot. This is to input a signal from the single-shot/repeated/single-shot/N-shot continuous selection means 52 shown in FIG. 7 or 8 to the microcomputer 49 to judge the setting state. If it is determined in step 191 that the mode is single-shot/repeated, the process proceeds to step 192 to perform the single-shot/repeated operation of the fourth embodiment shown in block A1 in FIG. If it is determined in step 191 that the mode is single-shot/N-shot mode, the process proceeds to step 193, and the single-shot/N-shot mode operation of the fifth embodiment shown in block B1 of FIG. 14 is performed. As in the fourth and fifth embodiments, the microcomputer 49 determines the switching state of the select switch 51 in the block A1 and block B1 determinations of single shot and continuous shot.
According to the present embodiment, it is possible to finally switch to any one of single-shot mode, continuous mode, and N-shot mode. Moreover, the single-shot operation is based on the first embodiment, the continuous operation is based on the second embodiment, and the N-shot operation is based on the third embodiment. Even if is selected, the rotation reference position of the sector gear 25 is detected and stopped at the end of the operation. Therefore, the effects of the first to fifth embodiments described above can also be obtained.
(Seventh Embodiment of Control)
FIG. 16 shows a seventh embodiment of the control capable of switching between single-shot mode, continuous-shot mode, and N-shot mode. The single-shot operation is based on the first embodiment, the single-shot operation is based on the second embodiment, and the single-shot operation is based on the third embodiment, which is the same as the sixth embodiment. Is.
In the operation flow of FIG. 16, first, the ON/OFF state of the trigger switch 37 is checked, whether or not there is a bullet 19 in the magazine 4 is checked, and then operation switching between single shot, repeated shot, and N repeated shot is performed. It was done.
First, control is started in step 200, and it is checked in step 201 whether the trigger switch 37 is pressed. If the trigger switch 37 has not been pressed, the watchdog timer WDT is cleared in step 202 and the process returns to step 201.
When it is detected in step 201 that the trigger switch 37 is pressed, it is checked in step 203 whether there is a bullet 19 in the magazine 4. This is executed by inputting a signal from the bullet presence/absence detection switch 41 to the microcomputer 49 and checking whether the signal is ON or OFF.
When it is detected in step 203 that there is no bullet 19 in the magazine 4, the process proceeds to step 204, and the power source of the motor 22 is turned off.
Next, the process proceeds to step 205, and after waiting for 20 ms, the process returns to step 101.
When it is detected in step 203 that there is a bullet 19 in the magazine 4, the process proceeds to step 206, and it is determined whether single shot, repeated shot, or N repeated shot is selected. This is executed by determining the switching state of the three-point select switch (not shown). The processing of steps 207, 208, and 208 is executed according to the determination of step 206. Step 207 is a processing block S1 shown by a broken line in FIG. 9, step 208 is a processing block C1 shown by a broken line in FIG. 11, and step 209 is a processing block N1 shown by a broken line in FIG.
In the operation flow of FIG. 16, the check of the ON/OFF state of the trigger switch 37, which is common to the first to third embodiments, and the processing of whether or not there is a bullet 19 in the magazine 4 are collectively processed. The operation flow is simplified. Further, the operation flow of FIG. 15 differs from that of the sixth embodiment in that single-shot, continuous-shot, and N-shot-shot operation switching is switched on an equal basis. In the sixth embodiment, the single shot/repeated shot is treated as one large block, and the single shot/N repeated shot is treated as another large block. In such a case, the single shot shown in FIG. 7 or FIG. It can be carried out by providing the repeating means/single-shot/N-shot repeating selection means 52 and the select switch 51. On the other hand, the seventh embodiment is suitable when single-shot, continuous, or N-shot operation is switched by a three-point switch or the like. Further, the switch for the switching judgment may be one of three-point switch for switching the operation among single-shot mode, continuous-shot mode, and N-shot mode.
According to the seventh embodiment, it is possible to finally switch to any one of single-shot mode, continuous mode, and N-shot mode. Moreover, the single-shot operation is based on the first embodiment, the continuous operation is based on the second embodiment, and the N-shot operation is based on the third embodiment. Even if is selected, the rotation reference position of the sector gear 25 is detected and stopped at the end of the operation. Therefore, the effects of the first to fifth embodiments described above can also be obtained.
(Eighth Embodiment of Control)
FIG. 17 shows an eighth embodiment of the control capable of switching the operation between the single-shot mode, the continuous-shot mode, and the N-shot mode. The single-shot operation is based on the first embodiment, the continuous operation is based on the second embodiment, and the N-shot operation is based on the third embodiment in the sixth and seventh embodiments. Is the same as.
In the operation flow of FIG. 17, the continuous fire and the N continuous fire are first summarized as a continuous fire and separated from a single shot, and then the continuous fire and the N continuous fire are separated.
First, in step 220, control is started, and in step 221, it is checked whether the trigger switch 37 is pressed. If the trigger switch 37 is not pressed, the watchdog timer WDT is cleared in step 222 and the process returns to step 221.
When it is detected in step 221 that the trigger switch 37 is pressed, it is checked in step 223 whether or not there is a bullet 19 in the magazine 4. This is executed by inputting a signal from the bullet presence/absence detection switch 41 to the microcomputer 49 and checking whether the signal is ON or OFF.
When it is detected in step 223 that there is no bullet 19 in the magazine 4, the process proceeds to step 224, and the power source of the motor 22 is turned off.
Next, the process proceeds to step 225, and after waiting for 20 ms, the process returns to step 221.
When it is detected in step 223 that there is a bullet 19 in the magazine 4, the process proceeds to step 226, and it is determined whether it is a single shot or a repeated shot/N repeated shots. This can be executed by providing the select switch 51 shown in FIGS. 7 and 8 and judging the switching state thereof by the microcomputer 49.
If it is determined in step 226 that it is a single shot, the process proceeds to step 227, and the processing block S1 shown by the broken line in FIG. 9 is executed. This is a processing flow for performing a one-time operation.
When it is determined in step 226 that the continuous/N-shot mode is selected, the flow advances to step 228 to determine whether the continuous or N-shot mode is selected. This can be executed by providing the single-shot/repeated/single-shot/N-shot continuous selection means 52 shown in FIGS. 7 and 8 and determining the switching state by the microcomputer 49. If it is determined in step 228 that the fire is repeated, the process proceeds to step 229, and the processing block C1 shown by the broken line in FIG. 11 is executed. This is a processing flow for performing a repeating operation. If it is determined in step 228 that N consecutive fires have occurred, the process proceeds to step 230, and the processing block N1 shown by the broken line in FIG. 12 is executed. This is a processing flow for performing N-shot mode.
Also in the eighth embodiment, similar to the seventh embodiment, the operation of checking the ON/OFF state of the common trigger switch 37 and the process of whether or not there is a bullet 19 in the magazine 4 are collectively processed. The flow has been simplified.
According to the eighth embodiment, it is possible to finally switch to any one of single-shot mode, continuous mode, and N-shot mode. Moreover, the single-shot operation is based on the first embodiment, the continuous operation is based on the second embodiment, and the N-shot operation is based on the third embodiment. Even if is selected, the rotation reference position of the sector gear 25 is detected and stopped at the end of the operation. Therefore, the effects of the first to fifth embodiments described above can also be obtained.
(Ninth Embodiment of Control)
18 to 20 show a ninth embodiment of control. The operation will be described with reference to the drawing.
The process starts at step 240 in FIG. 18 and proceeds to step 241 for initial setting. Here, the initial value of the watchdog timer used in the following process is set to 1000 ms, and the process of turning off the power of the motor 22 is performed. As described above, the initial value of the watchdog timer of 1000 ms is not limited to 1000 ms. The processing of turning off the power source of the motor 22 is first performed in order to surely bring the motor 22 into a stopped state.
Next, the routine proceeds to step 242, where it is determined whether single shot/repeated shot or single shot/N repeated shot. This can be executed by providing a single-shot/repeated and single-shot/N-repeated switching means 52 and determining the switching state by the microcomputer 49.
If it is determined in step 242 that the shot is a single shot or continuous shot, the process proceeds to step 243 in FIG. At step 243, it is checked whether the trigger switch 37 is pressed. If the trigger switch 37 has not been pressed, the watchdog timer WDT is cleared in step 244 and the process returns to step 243.
When it is detected in step 243 that the trigger switch 37 is pressed, the process proceeds to step 245 to check whether it is a single shot or a continuous shot. This can be executed by loading the switching state of the select switch 51 into the microcomputer 49. If it is determined in step 245 that the shot is a single shot, the process proceeds to step 246 and it is checked whether or not there is a bullet 19 in the magazine 4. This is executed by inputting a signal from the bullet presence/absence detection switch 41 to the microcomputer 49 and checking whether the signal is ON or OFF. When there is a bullet 19 in the magazine 4, the bullet presence/absence detection switch 41 is pushed by the bullet presence/absence detection switch pressing member 42 to turn on the switch.
When it is detected in step 246 that there is no bullet 19 in the magazine 4, the process proceeds to step 249 to turn off the motor 22.
Then proceed to step 248 and return to step 243 after a waiting time of 20 ms.
When it is detected in step 246 that the magazine 4 has the bullet 19, the process proceeds to step 247. This step 247 shows the single-shot process of the block S1 shown by the broken line in FIG. When the processing in step 247 is completed, the process proceeds to step 248, and after waiting for 20 ms, the process returns to step 243.
If it is determined in step 245 that the bullets are fired, the process proceeds to step 250 to check whether or not there is a bullet 19 in the magazine 4. When it is detected in step 250 that there is no bullet 19 in the magazine 4, the process proceeds to step 249, the power of the motor 22 is turned off, the process proceeds to step 248, and the process returns to step 243 after a waiting time of 20 ms.
When it is detected in step 250 that there is a bullet 19 in the magazine 4, the process proceeds to step 251. This step 251 shows the repeating process of the block C1 shown by the broken line in FIG. When the process of step 251 is completed, the process proceeds to step 248, and after waiting for 20 ms, the process returns to step 243.
(Tenth Embodiment of Control)
21 and 22 show a tenth embodiment of the control capable of counting the number of shots 19 fired.
FIG. 21 shows the flow of the single-shot firing operation shown in FIG. 9 provided with a counter for counting the number of bullets 19 fired. Similarly, a counter can be provided in the flow of the continuous firing operation of FIG. 11 and the flow of the N continuous firing operation of FIG. The continuous and N-repeating fires are the same as those in FIG. 21 and are not shown. Then, FIG. 22 shows a flowchart for summing up the numbers of the bullets 19 fired in the single shot, the continuous shot, and the N repeated shots. This will be described below with reference to FIGS. 21 and 22.
21, the same parts as those in FIG. 9 are designated by the same reference numerals.
First, control is started in step 100, and the value n1 of the counter C2 is reset to 0 in step 300. Next, the routine proceeds to step 101, and the same processing as that of the first embodiment of FIG. 9 is performed until step 107. Then, in step 107, it is checked whether the rotation reference position of the sector gear 25 is detected.
When the rotation reference position of the sector gear 25 is detected in step 107, the process proceeds to step 301. Here, 1 is added to the value of the counter C2. In this case, since the bullet 19 is single shot and only one shot is shot, the value of the counter becomes n1=0+1=1.
Next, in step 108, a signal for turning off the motor power source is output. Then, the process returns to step 101 through steps 109, 110 and 105.
When the trigger switch 37 is further turned on, the above operation is repeated, and 1 is further added to the value of the counter C2, and n1=1+1=2.
Thereafter, every time the trigger 3 is turned on and the bullet 19 is fired, the value of the counter C2 is incremented. That is, the value of the counter is incremented in response to the firing of one bullet 19.
In the case of continuous fire, it is possible to count the number of bullets 19 fired similarly. That is, assuming that the counter in the case of continuous fire is C3, the counter C3 is reset to 0 after step 120 in FIG. 11 and the value of the counter C3 is incremented by 1 after step 127, as in FIG. You can do it like this. In this case, since the shots are repeated, the bullet 19 is continuously fired in the loop of steps 127 to 131, and the count is incremented by 1 each time the step 127 is exited. Therefore, it is possible to accurately count the number of bullets 19 that have been fired.
In the case of N consecutive fires, it is possible to count the number of bullets 19 that have been fired. That is, assuming that the counter in the case of continuous fire is C4, the counter C4 is reset to 0 after step 140 in FIG. 12, and the value of the counter C4 is incremented by 1 after step 148, as in FIG. You can do it like this. In this case, since N shots are repeated, the bullet 19 is continuously fired in the loop of steps 127 to 131, and every time it leaves step 127, the count is incremented by 1 and the maximum N is counted up. Therefore, it is possible to accurately count the number of shots 19 even in the case of N consecutive fires.
The embodiment shown in FIG. 22 is a modification of the single-shot, continuous-shot, and N-shot repeated embodiment 7 shown in FIG. 16, and finds the total number of bullets 19 fired in single-shot, continuous shot, and N-shot repeated. It is something to display.
First, control is started in step 200, and the values n1, n2, and n3 of the counters C2, C3, and C4 are reset to 0 in step 400. Next, the process proceeds to step 201 and the process up to step 206 is the same as that of the seventh embodiment shown in FIG. In step 206, it is determined whether single shot, continuous shot, or N repeated shot is selected, and the processes of steps 401, 402, and 403 are executed. Step 401 shows the processing block S2 shown by the broken line in FIG. Step 402 is the one in which the counter C3 is provided by the above-described continuous fire, step 403 is the one in which the counter C4 is provided by the above-described continuous fire, and specifically, C2 is the next to the step 127 in C1 in FIG. The counter C3 is inserted in the block N2 and the counter C4 is inserted in the block N1 in FIG. 12 after the step 148.
When the processing of steps 401 to 403 is skipped, step 404 is executed. In step 404, n1 to n3 counted by the counters C2 to C4 in steps 401 to 403 are totaled and displayed on the display means. Although the display means is not shown in the figure, it can be easily provided by using a control technique using a normal microcomputer, a liquid crystal display or the like can be used, and the total number of bullets 19 fired using this liquid crystal display or the like. The value can be displayed. In the present embodiment, the single-shot mode, the continuous-shot mode, and the N-shot mode are provided as different counters so that the single-shot mode, the continuous mode, and the N-shot mode can be counted, but they may be counted as a common counter. In this case, it is counted as the total value of the single shot, the continuous shot, and the N repeated shot regardless of which route the single shot, the continuous shot, or the N repeated shot passes. In this case, step 404 is unnecessary, and step 400 only needs to reset one common counter.
Further, the above count value counts the number of bullets 19 fired, but if the number of bullets 19 loaded first is initialized and the bullet 19 is counted down every time it is fired, the remaining number of bullets 19 remains. You can know the number. In this case, it is possible to input a numerical value, but since the number of bullets 19 of the new magazine 4 is known in advance, this is detected when the magazine 4 is set, and the number of bullets 19 is initialized. By doing so, the initial settings can be made automatically. When the initial value is determined, the initial value when the magazine 4 is newly set is stored in the internal memory. Further, when it is desired to initialize an arbitrary numerical value, a key input means for inputting a numerical value may be provided. Although not shown, this key input means can be easily provided by using a control technique using a normal microcomputer.
As a means for counting the number of bullets 19 fired in the tenth embodiment, a rotation reference hole is provided in the sector gear 25 so that the photo sensor counts the number of passages, but the invention is not limited to this. For example, it is possible to count similarly by counting the movements of the piston 12 and the hammer which make one reciprocal movement in response to a single firing operation of the bullet 19.
The ON/OFF states of the trigger switch 37, the bullet presence/absence detection switch 41, the select switch 51, and the single/repeating and single/N-repeating switching means 52 described in each of the above-described embodiments are determined by fail-safe thinking. Is preferred, but is not limited thereto. The ON and OFF states may be reversed, and the point is that it can be implemented if the state of the switch can be determined.
Further, the electronic control circuit and the control flow described above are not limited to this, and can be modified within the scope of the invention.
Further, in the above description, the free run is stopped after the rotation reference position of the sector gear 25 is detected. This is because the present invention is constructed at low cost, and a servo motor may be applied as the positioning means of the sector gear 25 if the cost is high.
Also, as described above, the value of N in N barrage can be any positive integer of 2 or more. The present inventor manufactured N as 3, but not limited to this.

The present invention can be used as an alternative to a real gun for gun shooting training and maintenance training. It can also be used as a model gun for toys.
Further, according to the present invention, it is possible to control so that the rotating wheel (sector gear) and the rack do not engage with each other at the time of any firing operation, thereby improving the reliability of the mechanical mechanism of the gun and improving the reliability of the spring. This has the effect of preventing deterioration of the spring effect.
In addition, since the rotating wheels (sector gears) and the racks are seated in a state where they do not mesh with each other, there is an effect that the inside of the gun can be easily opened and maintenance can be easily performed.

Explanation of symbols

1... Gun body 3... Trigger 4... Magazine (magazine)
5... Grip 6... Gunstock 7... Hand guard liner 8... Hand carrier 9... Hinge 10... Cylinder 11... Cylinder head 12... Piston 13... Piston Head 14... O-ring 15... Spring 16... Piston movement restricting member 17... Mandrel 18... Rack 19... Bullet 20... Chamber 21... Barrel 22... Motor 23... Motor shaft 24... Reduction gear 25... Sector gear 27... Battery 28... Motor power supply control unit 29... Power supply line 30... Power supply line 31... Control line 32 ... Control circuit housing case 33 ... Sector gear tooth portion 34 ... Sector gear toothless portion 35 ... First control circuit printed circuit board 36 ... Second control circuit printed circuit board 37... Trigger switch 38... Control line 39... Photodiode 40... Rotation reference position detection hole 41 of sector gear... Bullet presence/absence detection switch.
42... Bullet presence/absence detection switch pressing member 43... First connector 44... Phototransistors 45, 46... Mounting hole 47... Electronic control circuit 48... Second connector 49. ..Microcomputers
50... Sector gear rotation reference position detection unit 51... Select switch 52... Single/repeating and single/N-repeating switching means 53... Amplifier 54... Operational amplifier (op-amp)
55... Groove 57... Cylinder head center hole 58... Bullet presence/absence detection lever 59... Bullet feed hole 60... Window frame 61 for bullet presence/absence detection... Cylinder bottom 62... Space between piston head and cylinder head

Claims (15)

In an air gun that shoots bullets using compressed air by a piston,
Providing means for detecting the operation reference position of the drive system for driving the piston,
An air gun characterized by stopping the operation of the drive system at a predetermined position when the operation reference position is detected. In an air gun that shoots bullets using compressed air by a piston,
Providing means for detecting the operation reference position of the drive system for driving the piston,
An air gun characterized in that when the operation reference position is detected, the operation of the drive system is stopped and the double-seat is always placed at the starting point of the firing operation. In an air gun that includes a cylinder and a piston housed inside the cylinder, and uses a cylinder and the air compressed by the piston to fire a bullet,
A rack provided integrally with the piston,
A sector gear in which a tooth portion where the rack meshes and a toothless portion where the rack does not mesh are provided on a part of the circumference,
A motor for driving the sector gear via a reduction gear mechanism,
A rotation reference position provided on the sector gear,
A sensor for detecting the rotation reference position,
Equipped with
When the rotation reference position is detected by the sensor, the motor is turned off,
Stop the sector gear at a position where the toothless part of the sector gear and the rack face each other,
An air gun characterized in that the piston is always double seated at the starting point of the firing operation. 4. The air gun according to claim 3, wherein the rotation reference position is detected by detecting a rotation reference position detecting hole provided in a part of the drive system with a photo sensor. A detection signal is input to a microcomputer by the photosensor, and when the rotation reference position is detected, the microcomputer generates and outputs an OFF signal of the motor to turn off the power supply of the motor. The air gun according to item 4. The air gun according to any one of claims 3 to 5, wherein a drive power source for the motor includes a battery, a motor, and a MOS-FET that turns ON/OFF power from the battery. A piston stored in the cylinder,
A spring for urging the piston in the direction of a cylinder head provided at one end of the cylinder;
A rack fixed to the lower part of the piston integrally with the piston,
The outer peripheral portion has a toothless portion that does not mesh with a tooth portion that meshes with the rack, and in a state where the tooth portion meshes with the teeth of the rack, the rack is opposed to the cylinder head against the biasing force of the spring. Sector gear to move in the direction,
A motor for rotationally driving the sector gear,
A rotation reference position detecting hole provided for detecting the rotation reference position of the sector gear,
A sensor for detecting the rotation reference position detecting hole,
A means for cutting off the power supply of the motor when the sensor detects the rotation reference position detecting hole;
Equipped with
After the hole for detecting the rotation reference position is detected, the piston is rotated by a predetermined position and stopped at a position where the toothless portion of the sector gear faces the rack. Air gun moving in the direction of, and compressed between the piston head of the piston and the cylinder head is ejected in the direction of the barrel from the center hole of the cylinder head, and the bullet is shot through the barrel. . When the air gun detects the operation reference position and is in a firing stopped state, the gun main body of the air gun can be opened around the hinge so that at least a part of the piston and the sector gear can be seen. The air gun according to claim 1 or 2. When the air gun detects the rotation reference position and is in a firing stopped state, the gun main body of the air gun can be opened around the hinge so that at least a part of the piston and the sector gear can be seen. The air gun according to claims 3 to 7. In the method of controlling an air gun that uses a compressed air by a piston to fire a bullet,
An air gun control method comprising detecting an operation reference position of a drive system for driving the piston and stopping the operation of the drive system at a predetermined position. In the method of controlling an air gun that uses a compressed air by a piston to fire a bullet,
A method of controlling an air gun, which detects an operation reference position of a drive system for driving the piston, stops the operation of the drive system, and always makes a double seat at a firing operation start point. A method of controlling an air gun, which comprises a cylinder and a piston housed inside the cylinder, and uses a cylinder and air compressed by the piston to fire a bullet,
A rack provided integrally with the piston,
A sector gear in which a tooth portion where the rack meshes and a toothless portion where the rack does not mesh are provided on a part of the circumference,
A motor for driving the sector gear via a reduction gear mechanism,
A rotation reference position provided on the sector gear,
A sensor for detecting the rotation reference position,
Equipped with
When the rotation reference position is detected by the sensor, the motor is turned off,
Stop the sector gear at a position where the toothless part of the sector gear and the rack face each other,
A method for controlling an air gun, characterized in that the piston is always double seated at a starting point of a firing operation. 13. The method of controlling an air gun according to claim 12, wherein the rotation reference position is detected by detecting a rotation reference position detecting hole provided in a part of the drive system with a photo sensor. A detection signal is input to a microcomputer by the photosensor, and when the rotation reference position is detected, the microcomputer generates and outputs an OFF signal of the motor to turn off the power supply of the motor. Item 13. The air gun control method according to Item 13. A piston stored in the cylinder,
A spring for urging the piston in the direction of a cylinder head provided at one end of the cylinder;
A rack fixed to the lower part of the piston integrally with the piston,
The outer peripheral portion has a toothless portion that does not mesh with a tooth portion that meshes with the rack, and in a state where the tooth portion meshes with the teeth of the rack, the rack is opposed to the cylinder head against the biasing force of the spring. Sector gear to move in the direction,
A motor for rotationally driving the sector gear,
A rotation reference position detecting hole provided for detecting the rotation reference position of the sector gear,
A sensor for detecting the rotation reference position detecting hole,
A means for cutting off the power supply of the motor when the sensor detects the rotation reference position detecting hole;
Equipped with
After the hole for detecting the rotation reference position is detected, the piston is rotated by a predetermined position and stopped at a position where the toothless portion of the sector gear faces the rack. Air gun moving in the direction of, and compressed between the piston head of the piston and the cylinder head is ejected in the direction of the barrel from the center hole of the cylinder head, and the bullet is shot through the barrel. Control method.

Images