JP2572939B2 - Ammunition type switching mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external power drive type ammunition type switching mechanism.

[0002]

2. Description of the Related Art In order to be able to fire two types of ammunition, for example, ground bullets and anti-aircraft bullets as desired with a single cannon, three bullet-feeding wheels have conventionally been required. That is, the first bullet sending wheel for sending ground bullets, the second bullet sending wheel for sending anti-aircraft bullets, and the ammunition sent from any of the first bullet sending wheel and the second bullet sending wheel to the breech passage. Requires a third bullet wheel to send. As for the first bullet sending wheel and the second bullet sending wheel, only one of the sending sides is driven. Thus, to fire two types of ammunition with a single cannon, at least three
Needs two bullet wheels. The control of the driving and stopping of Okutama wheel, the electromagnetic clutch or mechanical clutch is used. For example, rice feeders such as rice
There is a national patent No. 4450750.

[0003]

As described above, in the conventional type switching mechanism, at least three types which are accurately linked to each other are used.
Needs more bullet wheels. In addition, for example, by switching the operating state of the first and second bullet sending wheels from the state in which the first bullet sending wheel is operated and the second bullet sending wheel is stopped and the ground bullet is fired, the anti-aircraft bullet is switched. , It is necessary to keep the relationship between the three bullet wheels constant.
Therefore, the bullet type switching mechanism requires a power transmission mechanism such as a plurality of intermittent motion mechanisms and a switching mechanism such as a plurality of clutches, and the operation of these mechanisms needs to be very accurate. For this reason, the conventional type switching mechanism is complicated and large. An object of the present invention is to solve such a problem.

[0004]

SUMMARY OF THE INVENTION The present invention solves a bullet path.
Partially arcuate gear is formed on the stopper for releasing / cutting off
The rack that engages with this gear
The above-mentioned problem is solved by forming the moving shaft . That is, according to the present invention, the breech body (12) is provided rotatably.
One bullet wheel (32) and the bullet wheel (3
On both sides of 2) ammunition (1) from the ammunition (36 and 38)
6 and 17) respectively
Bullet holes (40 and 42) and both bullet holes (40 and 4)
Each in the bullet path between 2) and the bullet wheel (32)
And movable stoppers (44 and 50) provided.
And the bullet sending wheel (32) is in the bullet sending permission position.
Ammunition (16 or 17) on the stopper (44 or 50) side
Direction to move from bullet hole (40 or 42) to breech hole passage
In the ammunition type switching mechanism for selecting and supplying a desired one of two types of ammunition to the breech passage, the ammunition type switching mechanism is formed integrally with the stoppers (44 and 50).
The partially arcuate gears (44a and 50a)
Projecting the stopper of the topper (44 and 50) into the bullet feed path
Suppress the bullet sending position and the stopper part to stop the bullet sending
The above-mentioned bullet-permitted position where it is stored in a groove in the passage and permits bullets
Shafts (46 and 52) that swingably support the device and
Formed on the stopper operation shafts (48 and 54).
The rack (48) meshing with the gears (44a and 50a)
a and 54a) are provided . According to a second aspect of the present invention, the stopper operation is performed.
The position of the shaft (48 and 54) is changed to the position on the side of
Switching to one of the permitted side positions
A lever (72) is provided, and a switching lever (72) is provided.
Set the position of stopper operation shaft (48 and 54) by
The position of the stoppers (44 and 50)
It may be configured to control. Claims
As described in 3, the stopper operating shaft (48 and 54)
Position by solenoid (80 and 82) or cylinder
The stoppers (44 and 50)
It may be configured to control the position of.

[0005]

[Action] by the respective gear rack mechanism, sometimes both strike <br/> Tsu Pas was then positioned feed bullet blocking position, respectively are pressed in Okutama wheel direction by both bullet feed machine <br / > Ammunition (eg, ground and anti-aircraft ammunition) is
Blocking movement and exerting pressing force on the bullet sending wheel
No matter which direction the wheel rotates ,
No medicine is sent . From this state, one gear rack
The mechanism causes one of the stoppers to be in the
When Serare Ru, one ammunition pressed by one of the bullet feed machine (e.g., ground bullet) in response to rotation in one direction of Okutama wheel is transmitted to the bolt passages, then loading and launch
Is performed. The other gear rack mechanism causes the other stopper to be located at the bullet-permitted position (one gear
The rack mechanism moves one stopper to the bullet blocking position.
Is positioned) and the other is pushed by the other
Square of ammunition (for example, surface-to-air bombs), the other direction of Okutama wheel
In response to the rotation to, it is sent to the breech passage, then
And firing. This makes it possible to change the type of ammunition
The structure of the mechanism can be simplified, and
Can be used as a device.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a breech main body 12 is provided on the breech side of a barrel 10, and a bullet type switching mechanism described later is disposed inside the breech main body 12. The breech hole 14 provided concentrically with the gun barrel 10 is capable of moving the ammunition 16 installed in the breech passage to the left in FIG. The movement of the play bottom 14 is performed by rotation of the cam drum 18. Bearing 13
The cam drum 18 rotatably supported by the breech main body 12 by means of the motor 1 has a drive shaft 20 integral therewith.
9 to rotate. A cam groove 18 a is provided on the outer periphery of the cam drum 18, and the protrusion 14 a of the play bottom 14 is fitted in the cam groove 18 a. Thereby, the play bottom 14 moves. The cam groove 18a is formed so as to have a mirror image relationship between the surface side visible in FIG. 1 and the opposite surface side. 14 will move forward and backward. The drive shaft 20 is provided with a chain wheel 22 so as to rotate integrally. The feed shaft 24 is parallel to the drive shaft 20 by the bearings 21, 23 and 25.
2 rotatably supported. Further, as shown in FIGS. 2 and 3, a driven shaft 83 is rotatably arranged in parallel with the bullet feed shaft 24. The driven shaft 83 is provided with the chain wheel 26 so as to rotate integrally with the driven shaft 83. The chain wheel 22 of the drive shaft 20 is connected to the chain 27.
Are linked by The rotation of the driven shaft 83 is transmitted from a Geneva driver 98 provided to rotate integrally with the driven shaft 83 to a Geneva wheel 99 on the bullet feed shaft 24 side.
The Geneva driver 98 and the Geneva wheel 99 constitute the intermittent motion mechanism 30. That is, the Geneva driver 98 is provided with pins 98a, while the Geneva wheel 99 is provided with four radial grooves 99a at 90 ° intervals, and the pins 98a can fit into the grooves 99a. Therefore, each time the Geneva driver 98 makes one rotation, the Geneva wheel 99 intermittently rotates 90 °. This means that the bullet axis 2 of the bullet wheel 32
4 means that the cam drum 18 makes one rotation and stops while the breech bed 14 advances from the retracted position to the advanced position and returns to the retracted position again, and rotates 90 ° while the breech bed 14 is retracted and stopped. . A pair of bullet feed wheels 32 are provided at predetermined intervals in the axial direction so as to rotate integrally with the bullet feed shaft 24. As shown in FIG. 4, the bullet feed wheel 32 is provided with grooves 34 every 90 degrees in the circumferential direction.
The size of the groove 34 is such that the ammunition 16 can be received. In FIG. 1, a pair of bullet feed wheels 32
The lever 33 for discharging the medicine case is shown in between.

As shown in FIG. 4, on both sides of the breech main body 12, a ground-supply ammunition supply unit 36 and an anti-aircraft-supply ammunition supply unit 38 are provided. Can be supplied to the feed holes 40 and 42 of the breech main body 12.
Note that the ground ammunition 16 and the anti-aircraft ammunition 17 have exactly the same outer dimensions, and the term "ammunition" is used in this specification unless it is particularly necessary to distinguish them. A stopper 44 is provided in the bullet feed path between the bullet feed hole 40 and the bullet feed wheel 32. The stopper 44 can swing about a shaft 46 fixed to the breech main body 12.
The portion of the stopper 44 above the shaft 46 has a shape corresponding to the shape of the ammunition 16 and the shape of the bullet feed wheel 32 so as to fill a space formed therebetween. As shown in FIG. 5, a fan-shaped gear 44a is provided below the shaft 46 of the stopper 44. Gear 44a
Are engaged with a rack 48a provided on the stopper operation shaft 48. Note that the stopper 44 and the shaft 46 are
As shown in FIG. 7, a pair of the same wheels are provided corresponding to the two bullet feed wheels 32. A similar stopper 50, shaft 52, fan-shaped gear 50a, stopper operating shaft 54, rack 54a, and the like are also provided on the bullet feed hole 42 side. The stopper 44 and the stopper 50 have a mirror image relationship with respect to a vertical plane passing through the center of the bullet feed shaft 24.

As shown in FIG. 6, the stopper operating shafts 48 and 54 are supported by the breech main body 12 so as to be movable in the axial direction. Collars 60 and 62 are fixed to the stopper operation shafts 48 and 54 by pins 56 and 58, respectively, and springs 64 and 66 are attached to the collars 60 and 62 respectively.
It acts to push right in. This spring 6
With the forces of 4 and 66, the collars 60 and 62 respectively
In a state in which is pressed against the wall of the breech main body 12 (a state shown in FIG. 6), the stoppers 44 and 50 are in a state where the respective stopper portions protrude into the ammunition passage as shown in FIG. That is, from either of the ammunition units 36 and 38
The ammunition 16 and 17 are not supplied to the
The seed switching mechanism will function as a safety device.

The rear end face of the breech main body 12 has a bracket 7
The switching lever 72 is supported by the bracket 70 so as to be swingable about a shaft 74 as a fulcrum. That is, the switching lever 72 can swing between a position indicated by a solid line in FIG. 6 and two positions indicated by a virtual line. As shown in FIG.
A locating pin 78 is provided which is operable by the user. The positioning pin 78 receives the force of the spring 80 in the direction of protruding from the right side of the bracket 72 in FIG. The bracket 70 has three positioning holes 82,
84 and 86 are provided. This positioning hole 82,
A positioning pin 78 can fit into 84 and 86. FIG. 7 shows a state where the positioning pins 78 are fitted into the positioning holes 82. By fitting the positioning pin 78 into the positioning hole 84 or 86, the switching lever 72 can be fixed in a swinging state as shown by a virtual line in FIG.

Next, the operation of this embodiment will be described. When the switching lever 72 is at the position shown by the solid line in FIG. 6, the stopper operating shaft 48 is at the position shown in FIG. 5, and accordingly, the stopper 44 is also in the state shown in FIG. That is, the stopper 44 protrudes into the bullet feed passage, and the ground bullet 16 cannot move to the bullet feed wheel 32 side.
Similarly, the stopper 50 on the side of the bullet feed hole 42 is also located at a position protruding into the bullet feed passage, and the anti-aircraft bullet 17 cannot move toward the bullet feed wheel 32. Therefore, the ground bullets 16 and the anti-aircraft ammunition 17 are both in the bullet-feeding preventing state, and the ground bullets 16 or the anti-aircraft bullets 17 are not loaded by the breech bolt 14 even if the bullet-feeding wheel 32 rotates. For this reason,
No firing is possible and the cannon is safe.

Next, when the switching lever 72 is rotated clockwise from the state shown by the solid line in FIG. 6 and the positioning pin 78 is fitted and fixed in the positioning hole 84, the stopper operating shaft 48 moves leftward in FIG. Moving. Stopper operating shaft 48
Moves to the left in FIG. 6, the rack 48a and the gear 4
The engagement with 4a causes the stopper 44 to rotate clockwise in FIG. Accordingly, the stopper 44 is drawn from the bullet feed passage, and the passage of the ground bullet 16 is permitted. On the other hand, the stopper 50 on the opposite side is held at the bullet blocking position as it is. In this state, driving of the motor 19 is started, the cam drum 18 is rotated, and the bullet feed wheel 32 is rotated in the counterclockwise direction in FIG. 4, and is pushed rightward in FIG. Ammunition 16
Enters the groove 34 of the rotating bullet sending wheel 32 and moves together with the bullet sending wheel 32. When the ground bullet 16 moves to a position concentric with the breech hole 14, the rotation of the bullet sending wheel 32 stops. In this state, the motor 19 and the cam drum 18 rotate about １ ／, and the cam drum 18 and the breech hole 14 are in the state shown in FIG. Next, the cam drum 18 further rotates, and moves the play bottom 14 to the left in FIG. Thereby, the ground bullet 16 is loaded on the barrel 10 and fired. At this point, the cam drum 18 has made one rotation. By the next 90 ° rotation of the bullet feed wheel 32, the fired shell of the fired ground bullet 16 is discharged, and a new ground bullet 16 is supplied to the breech hole passage as in the previous case. As the cam drum 18 continues to rotate, similarly, the ground bullets 16 are sequentially loaded on the barrel 10 and fired.

Next, when the switching lever 72 is rotated counterclockwise in FIG. 6 and the positioning pin 78 is fitted into the positioning hole 86, the stopper operating shaft 48 is retracted to the position shown in FIG. The shaft 54 moves to the left in FIG. For this reason, the stopper 44 protrudes into the bullet feed passage, while the stopper 50 swings and is drawn from the bullet feed passage, so that the anti-aircraft bullet 17 can be supplied from the bullet feed hole 42 side. When the bullet feed wheel 32 is rotated clockwise in FIG. 4 in this state, the anti-aircraft bullets 17 are sent to the front of the breech bolt 14, and then the loading and shooting are performed in the same manner.

Therefore, in this embodiment, the knob 76
Is operated by hand to swing the switching lever 72, so that the safety state in which shooting cannot be performed and the ground bullet 1
It is possible to switch between a state in which the shooting is performed by using the weapon 6 and a state in which the shooting is performed by using the anti-aircraft bullet 17. The motor 1
Reference numeral 9 denotes a stop state, a counterclockwise rotation state in FIG. 4, and a clockwise rotation state in accordance with the three positions of the switching lever 72.

Next, a second embodiment shown in FIG. 8 will be described. In the above-described first embodiment, the switching of the bullet feeding direction is performed by manual operation. In the second embodiment, the remote control can be performed by using a solenoid. The solenoid 80 can drive the stopper operating shaft 48 in the axial direction, and the solenoid 82 can drive the stopper operating shaft 5
4 can be driven in the axial direction. Other configurations are the same as those in the first embodiment. When both solenoids 80 and 82 are deactivated, the stoppers 44 and 50 are in the bullet blocking position, and the cannon is in a safe state. When the solenoid 80 is operated, the ground bullet 16 can be supplied in the same manner as in the above-described embodiment. Conversely, when the solenoid 82 is operated, the anti-air bullet 17 can be supplied. . The motor 19 is controlled in conjunction with the operating states of the solenoids 80 and 82. Although the solenoid is used in the second embodiment,
This can be changed to a pneumatic cylinder, a hydraulic cylinder, or the like.

[0015]

As described above, according to the present invention, there is no need for a conventional switching plate for changing the type of ammunition.
In addition, it is necessary to link the bullet feed wheel and the two stoppers
Since there is no, it can be made to the entire apparatus simple and compact structure. As a result, the structure of the breech apparatus can be simplified and compact ones. Further, this kind of ammunition switching device can also be used as a safety device.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention (1 in FIG. 4).
FIG. 1 is a sectional view taken along line -1).

FIG. 2 is a view of FIG. 1 taken along line 2-2.

FIG. 3 is a view of FIG. 1 as viewed in the direction of arrow 3;

FIG. 4 is a sectional view taken along line 4-4 in FIG. 1;

FIG. 5 is a sectional view taken along line 5-5 in FIG. 4;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 4;

FIG. 7 is a sectional view taken along the line 7-7 in FIG. 6;

FIG. 8 is a diagram showing a second embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 12 breech body 14 rifle bottom 16 ground bullet (ammunition) 17 anti-aircraft bullet 18 cam drum 30 intermittent motion mechanism 32 bullet feed wheel 36 bullet feeder 38 bullet feeder 40 bullet feed hole 42 bullet feed hole 44 stopper 50 stopper 48 stopper operating shaft 54 Stopper operating shaft 72 Switching lever

Claims (3)

(57) [Claims] 1. A bullet feeder wheel (32) rotatably provided on a breech main body (12), and bullet feeders (36 and 3) on both sides of the bullet feeder wheel (32).
8) and two feed holes (40 and 42) provided to receive the ammunition (16 and 17) respectively, and the feed between the two feed holes (40 and 42) and the feed wheel (32). Movable stoppers (4
4 and 50), and the bullet sending wheel (32) disposes the ammunition (16 or 17) on the stopper (44 or 50) side in the bullet sending permitted position from the bullet feeding hole (40 or 42). In the ammunition type switching mechanism configured to rotate in a direction to be moved to the passage and to select and supply a desired one of two types of ammunition to the breech passage, the ammunition switching mechanism is integrated with the stoppers (44 and 50). The formed partial arcuate gears (44a and 50a), the stopper portions of the stoppers (44 and 50) protrude into the bullet feed passage, and a bullet blocking position for blocking bullets and a stopper portion within the bullet feed passage. The shafts (46 and 5) which are swingably supported between the above-mentioned bullet-permitted positions where the bullets are accommodated in the grooves of which the bullets are permitted.
2) and a rack (48) formed on the stopper operation shaft (48 and 54) and engaged with the gear (44a and 50a).
a and 54a), and a bullet type switching mechanism. 2. A switching lever (72) for setting the position of the stopper operating shafts (48 and 54) to one of a position on a bullet-supplying side and a position on a bullet-permitting side. The stopper (44) is set by setting the position of the stopper operating shaft (48 and 54) by the switching lever (72).
And the ammunition switching mechanism according to claim 1, wherein the ammunition switching mechanism is configured to control the position of the ammunition. 3. The position of the stopper (44 and 50) is controlled by setting the position of the stopper operating shaft (48 and 54) by a solenoid (80 and 82) or a cylinder. The described bullet type switching mechanism.