JP3357193B2 - Spare magazine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spare magazine provided for a cannon.

[0002]

2. Description of the Related Art A spare magazine is disposed near a bullet supply unit for supplying ammunition to a cannon, and supplies stored ammunition to the supply unit. The supply of ammunition from the spare magazine to the ammunition is performed when the ammunition stored in the ammunition is shot. The supply of ammunition from such a magazine to the ammunition is simplest by hand and is generally practiced. On the other hand, recently, in order to shorten the supply time and to automate the supply, a spare magazine for supplying ammunition to a supply unit using power has recently been considered.

[0003] Thus, the ammunition unit is provided integrally with the cannon, and performs a raising motion together with the cannon. Therefore, the spare magazine must be separated by a distance (S ₁ shown in FIG. ₁ ) that does not hinder the raising movement of the cannon and the ammunition unit at the time of shooting, and connected to the ammunition unit when supplying ammunition. For this reason, the supply of ammunition from the spare magazine to the ammunition is carried out by moving the entire ammunition to the ammunition by a predetermined distance (S ₁ ), and then moving the ammunition aligned in the spare magazine to an appropriate distance. (A distance S ₂ shown in FIG. 4) and a two-stage operation of pushing it into the bullet feeder. As described above, since it is desired that the time for supplying the bullet to the bullet feeder is short, this two-stage operation is performed by the power of a motor or the like.

However, in such a conventional spare magazine, since a two-stage operation is performed when the ammunition is supplied from the spare magazine to the ammunition supply, a drive source such as a separate motor or the like is provided for each operation. An operation mechanism and a position detection sensor are provided, and these are linked. As a result, there is a technical problem that the structure of the spare magazine becomes complicated and causes a failure.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional technical problem.
It is as follows. The invention according to claim 1 includes a fixed portion 23 having a slide surface 23a extending forward and backward, and a spare magazine main body 26 slidably supported by the fixed portion 23 back and forth, and is arranged forward. Spare magazines 7, 8 for supplying ammunition 21 to 5, 6, and the bottom 2 of the spare magazine body 26.
6a, a bracket member 11 for pressing and moving the ammunition 21 toward the front, a linear drive mechanism for driving the bracket member 11 forward and backward, which is disposed on the fixing portion 23, and a shaft member 10 coupled to the bracket member 11. And a control lever 22 swingably supported by the spare magazine main body 26. The control lever 22 includes a claw 22a slidably engaged with the slide surface 23a and the shaft member 10 moving forward. Shaft member 1 that can move in and out, and shaft member 1 that moves backward
0 has a contact surface 22c which can be brought into contact with the shaft member 10 while the claw portion 22a is slidably engaged with the slide surface 23a. the shaft member 10 and the control lever 22 and the preliminary magazine body 26 integrally being connexion forward drive is moved forward, when the control lever 22 and the preliminary magazine body 26 is moved forward by the predetermined distance S _1, the recess 23b of the slide surface 23a When the control lever 22 swings, the engagement between the shaft member 10 and the projection 22b is released, the bracket member 11 moves forward, and the ammunition 21 is pushed into the ammunition feeder 5, 6. Then, when the shaft member 10 driven by the linear drive mechanism moves backward and abuts on the contact surface 22c of the control lever 22, the control lever 22 is disengaged from the concave portion 23b. Swings and the shaft member 10 is controlled. Lever 22 and the spare magazine body 26
This is a spare magazine that is returned to its original position with the following. According to the invention of claim 2, the claw 22a of the control lever 22 is provided.
2. The spare magazine according to claim 1, wherein the control lever 22 is urged by a spring 24 so that the control lever 22 is elastically pressed against the slide surface 23a of the fixing portion 23. The invention according to claim 3 is characterized in that the lever 9 for pressing the ammunition 21 is provided integrally with the bracket member 11.
Is a spare magazine. In the invention of claim 4, the ammunition 21 is arranged in a plurality of rows on the bottom portion 26a of the spare magazine main body 26 so as to form a row in the front-rear direction. 4. A spare magazine according to claim 1, wherein the bracket member is connected by a shaft member.

[0006]

According to the first aspect of the present invention, the bracket member 11 is driven forward by the linear drive mechanism, so that the shaft member 10 coupled to the bracket member 11 becomes convex 22b.
Control lever 22 and spare magazine body 2
6 moves forward together. In this way, the control lever 22 and the preliminary if the magazine body 26 is slid relative to the fixed portion 23 by only moves forward a predetermined distance S _1, the control in the recess 23b of the slide surface 23a claw portion 22a is fitted to lever 22 Swings, and the engagement between the shaft member 10 and the convex portion 22b is released. Thereafter, the control lever 22 and the spare magazine body 2
6 with the bracket member 1 fixed to the fixing portion 23.
1 moves forward and pushes the ammunition 21 into the feeders 5 and 6.
In this way, the ammunition 21 previously arranged on the bottom 26a of the spare magazines 7, 8 is supplied to the ammunition units 5, 6.

Next, when the bracket member 11 and the shaft member 10 are driven backward by the linear drive mechanism, the shaft member 1 is moved.
0 abuts and engages with the contact surface 22c of the control lever 22. Thereby, the control lever 22 swings so that the claw portion 22a is separated from the concave portion 23b. Then, the bracket member 1
If ask 1 and the shaft member 10 is moved backward by the predetermined distance S _1, the shaft member 10 is controlled lever 22 and the preliminary magazine body 26
To return to the original position.

According to the invention of claim 2, the control lever 22
The control lever 22 is urged by a spring 24 so that the claw portion 22a is elastically pressed against the slide surface 23a of the fixing portion 23. Thus, the concave portion 2 of the slide surface 23a
The swing of the control lever 22 for fitting the claw portion 22a into 3b is elastically performed by the spring 24.

According to the third aspect of the present invention, the operation of pushing the ammunition 21 into the ammunition feeder 5, 6 is performed by pressing the ammunition 21 by the lever 9 integrated with the bracket member 11.

According to the fourth aspect of the present invention, the plurality of bracket members connected by the shaft member are reciprocally driven by the linear drive mechanism. Thus, when the bracket member 11 moves forward and pushes the munitions 21 into the ammunition feeders 5 and 6, a plurality of munitions 21 arranged in a plurality of rows in the front-rear direction are connected by the shaft member 10. This is done by the bracket member 11 described above.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 8 show a spare magazine according to an embodiment of the present invention. 5 and 6, reference numeral 2 denotes a machine gun having a gun barrel 1, and the left and right sides of the machine gun 2 are provided with ammunition units 5 and 6, respectively. Spare magazines 7, 8 are arranged respectively. Each ammunition machine 5,
6 is pivotally supported at the center O of elevation as shown in FIG. Therefore, the preliminary magazine 7,8, at normal, are spaced apart from each bullet feed motor 5 and 6 by a predetermined distance S _1, the bullet feed motor 5 and 6 except when the bullet feed
To prevent interference.

Each of the spare magazines 7, 8 comprises a base 23, which is a box-shaped fixing portion having an open top, and a spare cylindrical main body 26, which has a rectangular cylindrical shape with front and rear openings. have. Each spare magazine body 26 has a
The protrusions 26d are respectively formed as shown in FIG.
6a, a partition 2 for dividing the ammunition 21 in the left-right direction.
6b is formed as a ridge extending in the front-rear direction, and the bracket members 11 are respectively arranged between the partition portions 26b. A lever 9 for pressing the ammunition 21 forward is non-rotatably sandwiched between the bracket members 11, respectively.
Is provided with one shaft member 10 therethrough.

The base 23 has slide surfaces 23a extending in the front-rear direction on horizontal step portions 23d formed on both sides near the upper end, respectively. As shown in FIG.
A concave portion 23b is formed at a predetermined position of 3a, and a slide portion 23c formed of a horizontal groove extending in the front-rear direction is formed on the inner wall of the upper end rising from each horizontal step portion 23d. The above-mentioned spare magazine main body 26 is held slidably forward and backward by engaging each of the projections 26d on both sides with the slide portion 23c of the base 23.

Of the plurality of bracket members 11 arranged in the left-right direction in this way, the small diameter shaft portions of the bracket members 11 located at both ends are connected to the spare magazine main body 26 as shown in FIGS. Through the slits 26f formed in the bottom portion 26a of the main body 2 so as to extend in the front-rear direction.
The nut members 20 are fixed to portions located below the respective nuts 6. Each nut member 20 is screwed with a pair of screw shafts 18 and 19 extending in the front-rear direction and arranged in parallel. The pair of screw shafts 18 and 19 are rotatably supported by front and rear walls of the base 23, and have rear ends protruding from the rear wall,
Chain wheels 14 and 15 having the same diameter are fixed to each other.

On the other hand, a motor 12, which is a rotary drive source, is fixed inside the base 23, and each of the chain wheels 14, 15 is coaxially fixed to the motor shaft of the motor 12 and each of the chain wheels 14, 15. Chains 16 and 17 are wound. Therefore, each chain wheel 14, 1
5 and the screw shafts 18 and 19 are synchronously driven to rotate by the motor 12. The motor 12, the chain wheel 13, the chain wheels 14, 15, the chains 16, 1
The 7 and the screw shafts 18 and 19 constitute a linear drive mechanism for reciprocatingly driving the nut member 20, the shaft member 10, the bracket member 11 and the lever 9 back and forth.

As shown in FIG. 3, the shaft member 10 passes through a pair of slits 26e formed opposite to both side walls of the spare magazine body 26, and a control lever 22 is provided at each end protruding from both side walls. It is engaged and disengaged. Each of the control levers 22 is supported by a support shaft 25 so that
6 and is swingably supported by the base member 6 and has a claw portion 22a, a convex portion 22b, a contact surface 22c, and a support surface 22d.

The claw portion 22a is formed at the front end portion so as to protrude downward, and has a size that can be fitted into the concave portion 23b of the base 23. The claw portion 22a, when the pre-magazine body 26 moves forward from the rearmost position by the predetermined distance S _1, base 23
Of the recess 23b
To fit. The protrusion 22b is formed so as to protrude upward at the front end, and can be engaged with the shaft member 10 only in a state where the claw 22a slides on the slide surface 23a of the base 23 without fitting into the recess 23b. Have a height. The contact surface 22c is
Extending above the support shaft 25, behind the convex portion 22b,
Specifically, it is formed between the convex portion 22b and the support shaft 25,
The claw portion 22a has a height that can be engaged with the shaft member 10 that moves backward with the claw portion 22a fitted in the concave portion 23b. The support surface 22d is formed on the lower surface of the rear end portion, and when the shaft member 10 comes into contact with the contact surface 22c, the support shaft 25 of the control lever 22 is moved in a state in which the claw portion 22a escapes from the concave portion 23b. The sliding surface 23a is slidably contacted so that the swing around the center is regulated.

Further, as shown in FIG. 3, the control lever 22, which is swingably supported on the spare magazine main body 26 by the support shaft 25,
The claw portion 22a is urged by a spring 24 so as to be elastically pressed against the slide surface 23a of the base 23.
The interior of the spare magazine body 26 is shown in FIGS.
As shown in FIG. 4, a plurality of ammunition 21
A plurality of rows are arranged and stored so as to form a row in the front-rear direction between the respective partition portions 26b on a, and the central axis of each ammunition 21 is vertical.

Next, the operation of the above embodiment will be described.
When the ammunition 21 is supplied from one of the spare magazines 7, 8 to the paired feeders 5, 6, the motor 12 is rotated in one direction in a state where the spare magazine body 26 is at the rearmost position. Thereby, the screw shafts 18, 18 via the chain wheels 13, the respective chains 16, 17 and the respective chain wheels 14, 15 are formed.
19 is synchronously driven to rotate in one direction, and the pair of nut members 20 start to move forward toward the feeders 5 and 6. At this time, the cannon 2 and the ammunition units 5 and 6 are set in a horizontal posture as shown in FIG.

When the nut member 20 is moved forward, the bracket member 11, the shaft member 10,
Other bracket members 11 and levers 9 also move forward. At this time, since both end portions of the shaft member 10 are in contact with the projections 22b of the control lever 22, the control lever 22
Moves forward integrally with the shaft member 10 in a state where the pawl portion 22a is in sliding contact with the slide surface 23a and the swing is restricted. Further, since the control lever 22 is connected to the spare magazine body 26 via the support shaft 25, the spare magazine body 26 moves forward toward the feeders 5, 6.

In this manner, the spare magazine body 2 shown in FIG.
If the forward movement by the predetermined distance S ₁ as indicated 6 in solid lines, the lever 9 moves the lever 9 'as shown by symbols including the dash, claw portions 22a of the control lever 22
Correspond to the concave portion 23b, and the control lever 22 ', which is rotationally urged about the support shaft 25 by the spring 24 as shown by the dashed reference numeral in FIG.
The second claw portion 22a enters the concave portion 23b.

Thus, the shaft member 10 and the control lever 22
Is engaged disengagement of the convex portion 22b of the spare magazine body 26 integral with the support shaft 25 is held (the position connected to the predetermined distance S ₁ just forward to the bullet feed motor 5, 6) position. In addition,
Since the contact surface of the projection 22b of the control lever 22 with the shaft member 10 is located above the support shaft 25, the control lever 22 pulled by the shaft member 10 has a counterclockwise direction in FIG. The rotation biasing force in the circumferential direction is constantly acting. Therefore,
It is also possible to omit the spring 24 and let the claw 22a of the control lever 22 enter the recess 23b. The counterclockwise rotational urging force acting on the control lever 22 is
The contact surface of the shaft 2b with the shaft member 10 is increased by providing an inclined surface which is gradually inclined upward toward the front.

By the further rotation of the motor 12, the nut member 20, the bracket members 11, the shaft member 10 and the lever 9 continue to move forward while the control lever 22 and, consequently, the spare magazine main body 26 are left. Pushes the ammunition 21 in front of it into the ammunition units 5, 6. End forward movement distance S ₂ of the bracket member 11 takes the position of the lever 9 'the lever 9 is shown in FIG. 4, when finished pushing all of the plurality rows of ammunition 21 to the bullet feed motor 5 and 6, are shown The position of lever 9 "is detected by the detection switch
The rotation of the motor 12 is reversed. Thereby, the nut member 20, the bracket member 11, the shaft member 10, and the lever 9 gradually retreat.

The shaft member 10, if reached at a distance S ₂ only retracted controlled lever 22, so pressing the above the contact with the support shaft 25 to the contact surface 22c, the control lever 22
Swings clockwise around the support shaft 25 and the claw 22
a is pulled out from the recess 23b. At that time, the spring 24 is compressed. The clockwise rotation of the control lever 22
The support surface 22d slidably comes into contact with the slide surface 23a, and the process ends. Thereafter, the shaft member 10 is accompanied connexion to retract the control lever 22, gradually retracts control lever 22 and the preliminary magazine body 26 integral returns to its original position retracted a predetermined distance S _1. The ammunition 21 is stored in the spare magazine body 26 again, and the above operation is repeated, whereby the ammunition 21 can be supplied from the spare magazines 7, 8 to the paired feeders 5, 6 one after another. .

In the above embodiment, a pair of screw shafts 18 and 19 and a nut member 20 are used as the linear drive mechanism. Is also possible. FIGS. 7 and 8 show an example of a structure in which one screw shaft 28 is rotatably mounted between the front and rear walls at the center of the base 23. A rear end protruding from the rear wall of the screw shaft 28 has The chain wheels 34 are fixed. On the other hand, the motor 12 is fixed inside the base 23,
A chain wheel 33 fixed to the motor shaft of the motor 12
A chain 36 is wound between the screw shaft 28 and the chain wheel 34.

The forward and reverse rotation of the motor 12 causes the chain wheel 34 and the screw shaft 28 to rotate in the forward and reverse directions, and the nut member 20 screwed to the screw shaft 28 and the slit 26f of the preliminary magazine main body 26 are rotated. Two bracket members 11 at the center portion which are inserted and connected to nut member 20
Is reciprocated back and forth, and the other bracket member 11 is also reciprocated back and forth via the shaft member 10. This motor 1
2. The chain wheel 33, the chain 36, the chain wheel 34, the screw shaft 28 and the nut member 20 constitute a linear drive mechanism for reciprocatingly driving the bracket member 11, the shaft member 10 and the lever 9 back and forth. Further, the linear drive mechanism may be constituted by a rack-and-pinion to obtain the same operation. In the above embodiment, the ammunition 21 in each row is pushed into the ammunition feeder 5, 6 by each lever 9, but each lever 9 and each bracket member 11 are integrally formed. And bracket member 1
It is also possible to give 1 the function of each lever 9.

[0027]

As will be understood from the above description,
According to the spare magazine according to the present invention, the following effects can be obtained. In other words, the operation of supplying ammunition from the spare magazine to the ammunition machine is automated, and a mechanism for moving the spare magazine body, a mechanism for pushing the ammunition into the ammunition machine, and a drive source thereof are integrated and arranged, and only the system The operation can be obtained by the above-mentioned drive source, so that the structure is significantly simplified, and the possibility of failure is reduced, and the reliability and durability are increased.

[Brief description of the drawings]

FIG. 1 is a rear view showing a spare magazine according to an embodiment of the present invention.

FIG. 2 is a side view showing a state in which a spare magazine is connected to a bullet feeder by partially cutting out the same.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is an explanatory view showing a main part of FIG. 2 in an enlarged cross section.

FIG. 5 is a plan view showing the cannon and the spare magazine similarly.

FIG. 6 is a side view showing the cannon and the spare magazine.

FIG. 7 is a rear view showing a spare magazine provided with a linear drive mechanism according to another structural example.

FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 7;

[Explanation of symbols]

5, 6: bullet feeder, 7, 8: spare magazine, 10: shaft member, 1
1: bracket member, 21: ammunition, 22: control lever,
22a: claw portion, 22b: convex portion, 22c: contact surface, 23:
Base (fixed portion), 23a: slide surface, 23b: concave portion,
25: support shaft, 26: spare magazine body, 26a: bottom, S
₁ : predetermined distance.

Claims (4)

(57) [Claims] 1. A fixed magazine (23) having a slide surface (23a) extending back and forth, and a spare magazine body (26) slidably supported by the fixed unit (23) back and forth.
A spare magazine (7, 8) for supplying an ammunition (21) to a bullet feeder (5, 6) disposed in front thereof, and comprising a spare magazine body (2).
6) a bracket member (11) for pressing and moving the ammunition (21) disposed on the bottom portion (26a) forward, and a straight line disposed on the fixed portion (23) for driving the bracket member (11) back and forth. Drive mechanism and bracket member (11)
A shaft member (10) coupled to the main body and a spare magazine body (26)
And a control lever (22) supported swingably.
The control lever (22) includes a claw (22a) slidably engaged with the slide surface (23a), a protrusion (22b) with which the shaft member (10) that moves forward can be engaged and disengaged, The contact surface (22) with which the moving shaft member (10) can abut and engage.
c) and a claw portion (22) on the slide surface (23a).
The shaft member (10) is engaged with the projection (22b) in a state where the shaft member (10) is slidably engaged, and the control lever (22) is integrally formed with the shaft member (10) driven forward by the linear drive mechanism. And the spare magazine body (26) moves forward and the control lever (22)
And when spare magazine body (26) is moved forward by the predetermined distance (S _1), the recess of the slide surface (23a) (23b)
The control lever (22) swings, the engagement between the shaft member (10) and the convex portion (22b) is released, and the bracket member (11) moves forward and the ammunition is inserted. (2
1) is pushed into the feeder (5, 6), and then the shaft member (10) driven by the linear drive mechanism is moved backward to abut on the contact surface (22c) of the control lever (22). When combined, the control lever (22) swings so that the claw portion (22a) is disengaged from the concave portion (23b), and the shaft member (10) moves with the control lever (22) and the spare magazine body (26). A spare magazine that returns to its original position. 2. The control lever (22) is moved by a spring (24) so that the claw (22a) of the control lever (22) is elastically pressed against the slide surface (23a) of the fixing portion (23). 2. The spare magazine according to claim 1, wherein said magazine is biased. 3. A spare magazine according to claim 1, wherein a lever (9) for pressing the ammunition (21) is provided integrally with the bracket member (11). 4. A plurality of rows of ammunition (21) are arranged on the bottom (26a) of the spare magazine body (26) so as to form a row in the front-back direction, and a bracket member (21) is provided corresponding to each row of the ammunition (21). 11) and each bracket member (11)
4. A magazine as claimed in claim 1, wherein the shafts are connected by a shaft member.