JPH0791892A - Firearm handle mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a handle structure for a machine gun or the like that reduces the fatigue of the shooter due to recoil and vibration at the time of firing, and that makes the wrist posture of the shooter easier depending on the change of the firing angle. [Structure] When a bullet 61 is fired, the gun body 1 moves back and forth due to its reaction and vibration. At this time, the gun body 1 moves back and forth along the guide rod 23 of the handle mounting body 20 via the buffer spring in the spring accommodating portion 9, and recoil or vibration is not directly transmitted to the handle 40 held by the shooter. Further, the grip 40 is changed around the axis of the guide rod 23 between a horizontal position and a diagonally lower position close to a right angle in accordance with the size of the shooting angle, thereby facilitating the wrist posture of the shooter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handle mounting structure for a firearm such as a machine gun.

[0002]

2. Description of the Related Art Conventionally, as a mounting structure for a handle of a firearm of the type described above, as shown in FIG. 5, two grips 40, which are vertical to the left and right, are fixed to the rear part of a gun body 1 via a mounting bracket 20A. As shown in FIG. 6, there is one in which a handle 40 is horizontally fixed to the rear portion of the gun body 1 on the left and right. In the shooting operation, the shooter holds the left and right handles 40 with the left and right hands, respectively, and presses the pusher 55 with the thumb of one of the hands (or pulls the trigger with the index finger).

[0003]

When shooting as described above, the pushing tool is pushed while the target is caught by the sighting tool, but when the bullet is fired, a recoil of the gun body occurs. In particular, when continuous firing is performed, shock vibration due to the recoil of the firing is directly transmitted to the shooter's hand through a handle fixed to the gun body, which causes fatigue of the shooter and causes a problem in aiming.

Further, for a long-distance target, the range of the gun is increased by increasing the firing angle of the gun, but in such a case, in the case shown in FIG. 5, the bending of the wrist with the grip of the handle becomes cramped, which is not preferable. . On the other hand, in the case of FIG. 6, the wrist does not bend when the angle of incidence is large, and the posture is comfortable, but the angle of incidence is low for a target at a short distance, and the accuracy is higher than that at the time of long-distance shooting. When high accuracy is required, both sides of the shooter's arms are opened and the gun cannot be held sufficiently, which is not preferable for improving accuracy.

A first object of the present invention is to provide a handle structure which makes it difficult to transmit vibrations at the time of shooting to the hand of the shooter. A second object of the present invention is, in addition to the first object, a grip structure which can easily maintain the posture of the wrist of the shooter in accordance with the angle of incidence and contribute to the improvement of the accuracy of the hit at a short distance. To provide.

[0006]

In order to solve the first problem, according to the invention of claim 1, a handle mounting body is supported by a rear portion of the gun body so as to be reciprocally movable in a front-rear direction by a predetermined amount. A buffer spring for urging the handle attachment body to the rear is interposed between the gun bodies, and a pair of left and right handles are attached to the handle attachment body.

In order to solve the second problem, according to the invention of claim 2, in addition to the structure of claim 1, the base of the handle is supported by the handle mounting body so as to be rotatable about the longitudinal axis. ,
The present invention is characterized by including a posture switching mechanism that switches and holds the posture of the handle between a horizontal first position and a second position in which the tip of the handle faces downward.

[0008]

According to the first aspect of the present invention, when the gun body is shock-oscillated back and forth during continuous shooting, the gun body is slid forward and backward with respect to the handle mounting body through the buffer spring, and the handle has a recoil and shock vibration. The recoil and vibration to the hand of the shooter is mitigated without direct transmission. According to claim 2, when the angle of incidence is large, the posture of the handle is set to the horizontal first position to facilitate the posture of the wrist of the shooter, and at a short distance, the sides of the shooter are set to the vertical position or a second position close thereto. The accuracy of the shot is improved by closing the gun and holding the gun securely.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 and 2, reference numeral 1 is a gun main body, and a tail cylinder 2 is integrally and firmly connected to a tail cylinder cover 3 which covers the upper rear end portion. The tail cylinder cover 3 has a spring accommodating portion 9 and a supporting portion 12 protruding from the left and right sides of its upper surface. Each spring accommodating portion 9 has a small-diameter through hole 11a penetrating therethrough and a large-diameter spring accommodating hole 11 opening only on the breech side. An insertion hole 13 for inserting a guide rod 23, which will be described later, is formed in each of the support portions 12 coaxially with the spring accommodating hole 11. Spaces 15 are formed in front of and behind the spring accommodating portion 9, respectively, and the upper surface of the transition piece cover 3 in each of the spaces 15 is a slope 3a (FIG. 3). It is arranged such that it can be moved by a predetermined amount along the direction. A space for accommodating a play bottom (not shown) is formed inside the transition piece cover 3 with the transition piece 2.

Next, the handle mounting body 20 comprises a slider 21 and a guide rod 23. The slider 21, which is shaped so as to straddle the tail cylinder cover 3 from the upper side, has leg portions 22 positioned in the space 15 in the front, rear, left and right by providing recesses for positioning the spring accommodating portions 9 in the intermediate portions on both sides. The small diameter portion 23b of the guide rod 23 is inserted between the leg portions 22 through the insertion holes (reference numeral omitted) provided in the front and rear leg portions 22 on the left and right, respectively, and the nuts 24 are tightened integrally. The large diameter portion 23a of the guide rod 23 is the insertion hole 13 of the support portion 12.
In addition, the small-diameter portion 23b of the guide rod 23 is axially slidably supported in the insertion hole 11a through the spring accommodating hole 11, whereby the handle attachment body 20 moves by the stroke L shown in FIG. It is movable in the front-rear direction along the barrel axis with respect to the cover body 3.

A collar 25 is fitted in the small-diameter portion 23b of the guide rod 23 on the front side of the rear leg portion 22, so that the collar 2
5, a buffer spring 26 is interposed between the spring 5 and the bottom of the spring accommodating hole 11 to urge the handle mounting body 20 rearward with respect to the gun body 1, and when the gun body 1 does not recoil or vibrate, the slider 20 moves. It is in the position of FIGS. The outer periphery of the front end of the collar 25 faces the spring accommodation hole 11 so as to be slidable in the axial direction, and prevents foreign matter from entering the spring accommodation hole 11.

Left and right forked portions 31 of the connecting member 30 are fixed to the rear end portions of the left and right guide rods 23 by nuts 32, respectively. As shown in FIG. 4, a base 41 of a handle 40 is rotatably supported by the left and right bifurcated portions 31 about a longitudinal axis of the guide rod 23. Base 41
A guide shaft 42 is welded to the. A guide collar 43 is integrally fixed to the tip of the guide shaft 42. Information color 43
Is slidably fitted in a sliding hole 44a formed at the center of the handle body 44. A cap 45, which is integrally screwed to the base side of the handle body 44, is slidably inserted into the guide shaft 42. A pin 4 penetrating through a long hole 46 formed through the guide collar 43 and the guide shaft 42 at the tip of the handle body 44.
7 is stuck. The length of the long hole 46 is long enough to unlock the locking projection 49 and the positioning recesses 50a and 50b described later. A compression spring 48 is interposed between the guide collar 43 and the cap 45. Cap 45
The engaging projections 4 are respectively provided at the end portions (the portions facing the forked portions 31) of the
9 is provided. The bifurcated portion 31 has a positioning recess 50a that is locked to the locking projection 49 to position and hold the handle 40 at a horizontal first position A and a second position B where the tip 40a of the handle 40 faces downward. 50b is provided. In this embodiment, the second position B forms an angle of about 70 degrees with the horizontal, but any angle up to a right angle may be used. In this embodiment, the posture switching mechanism 51 of the present invention includes a compression spring 48 and is configured to reciprocate the handle body 44 in the axial direction with respect to the guide shaft 42, a locking projection 49, and positioning recesses 50a and 50b. To be done.

A pusher 55 is attached to the connecting member 30 and the pusher shaft 5 is pressed.
It is rotatably supported by 6, and is biased counterclockwise in FIG. 2 by a spring (not shown). Push 5
The tip end of 5 is connected via a link pin 57 to a long hole 59 of a reverse hook removal 58 pivotally supported at the rear end of the transition piece 2. The reverse hook disengagement 58 is a known percussion mechanism in the transition piece 2 (Japanese Patent Laid-Open No. 4-103).
(Disclosed in No. 994), and push 5 in preparation for firing.
When 5 is pressed, the bullets 61 are fed into the gun body one by one by a bullet feeding mechanism (not shown) and fired.

Now, when performing long-distance shooting, the locking projections 49 are locked in the positioning recesses 50a to hold the left and right handles 40 in the horizontal first position A. Then, the wrist of the shooter does not have a cramped posture even if the shooting angle is large. Further, in the case of a short distance where the angle of incidence is small, when the handle body 44 is pulled outward along the guide shaft 42 against the spring force, the locking projection 49 is removed from the positioning recess 50a, and then rotated downward as it is, Just when the locking projection 49 faces the positioning recess 50b at the diagonally lower position, the two are locked by the spring force of the compression spring 48, and the handle 40 is positioned at the diagonally lower second position B which is almost vertical.
In this way, when the left and right handles 40 are in the second position B, which is diagonally downward and close to the vertical, both sides of the shooter holding the handles 40 can be closed and the gun body 1 can be firmly held, thereby improving the accuracy of the hit.

Then, when the push bar 55 of the gun which is in preparation for firing is pushed, a bullet 61 is fired, the gun body 1 is retracted by its recoil, and in continuous firing, the gun body 1 is moved back and forth due to the vibration due to the recoil. However, at this time, the gun body 1 slides back and forth with respect to the handle mounting body 20 via the buffer spring 26 along the guide rod 23 of the handle mounting body 20 held by the shooter, and grips the handle 40. The recoil and vibration are not transmitted directly to the shooter's hand, which reduces the fatigue of the shooter and makes it easier to aim. Even if the gun body 1 moves back and forth, the pusher 5
5 and the reverse hook disengagement 58 are connected by the link pin 57 through the long hole 59 having a length that allows the gun body 1 to move back and forth.
It is possible to maintain the state in which the pusher 55 is being pushed by the finger.

[0016]

As described above, according to the invention of claim 1,
Even if the gun body retreats due to shooting recoil, and the gun body is shocked and vibrated in the front-back direction, the gun body moves back and forth with respect to the handle mounting body via a buffer spring, so the reaction and vibration hold the handle. It has the advantages that it is not transmitted directly to the shooter's hand, the fatigue of the shooter is reduced, the misalignment of the aim is reduced, and the accuracy of hitting is improved. According to the second aspect of the present invention, the handle has a horizontal first position in accordance with the angle of incidence, and the handle tip is directed downward.
Since it is changed to the second position, which is vertical or nearly vertical, when the angle of incidence is large with respect to the long-distance target, the handle can be made horizontal by making the grip horizontal, and when shooting at close range, the grip can be easily adjusted. By closing both sides of the shooter who holds the handle vertically or close to it, the gun can be held securely and the accuracy of hit can be improved.

[Brief description of drawings]

FIG. 1 is a plan view of the present invention.

2 is a side view of FIG. 1 with a partial cross section.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV in FIG.

FIG. 5 is a conventional technique.

FIG. 6 is a conventional technique.

[Explanation of symbols]

 1 Gun Main Body 20 Handle Attachment 26 Buffer Spring 40 Handle 41 Base 48 Compression Spring 49 Locking Protrusions 50a, 50b Positioning Recess 51 Position Changeover Mechanism A First Position B Second Position

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuo Koyama 1080 Nogami, Sekigahara Town, Fuwa District, Gifu Prefecture

Claims (2)

[Claims] 1. A grip mounting body is supported at a rear portion of a gun body so as to be reciprocally movable in a front-rear direction by a predetermined amount, and a buffer spring for biasing the grip mounting body rearward is interposed between the grip mounting body and the gun body. A handle attachment structure for a firearm that consists of a pair of left and right handles attached to the handle attachment body. 2. A handle mounting body for supporting a base of the handle rotatably around an axis in the front-rear direction, and a posture of the handle is a first position which is horizontal and a second position where a tip of the handle faces downward. 2. A posture switching mechanism for switching and holding is provided.
Attachment structure for the firearm handle described.