JPH05708Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a firing mechanism for a bolt-action gun, and is particularly useful in applications to guns that require precision shooting, such as target rifles and sniper rifles.

BACKGROUND TECHNOLOGY AND PROBLEMS The firing mechanism in a conventional bolt-action gun is pivotally supported by a trigger frame 102, as shown in FIG.
A reverse hook 101 biased counterclockwise by a reverse hook spring 103 hooks a firing pin (not shown), and the spring force of the firing pin spring (not shown) acting as shown by an arrow causes the reverse hook spring 103 to engage. The top of the trigger 113, which is pivotally supported by the trigger frame 102 and biased counterclockwise by a trigger spring 118, locks the reverse hook 101, which is intended to be pressed and not rotated clockwise. control your movements,
Preparation for launch, so-called "Kotsuking", has begun to take place. In the firing mechanism as described above, firing is performed by firing the trigger 1 against the spring force of the trigger spring 48 and the firing pin spring.
13 to release the engagement between the trigger 113 and the reverse hook 101. In addition to making appropriate adjustments,
The spring force, that is, the pulling force of the trigger spring 118 is adjusted as appropriate by moving a spring force adjusting screw 119 forward and backward.

In the conventional firing mechanism described above, the trigger 113 directly locks the reverse hook 101, so the trigger 113
Since the trigger 113 is pulled down by one step, it is impossible to predict the moment when the trigger 113 will fall, that is, the moment when the shot will be fired, and there is a risk of jerking, making it impossible to perform precision shooting. Furthermore, in the conventional firing mechanism, the trigger 113 directly receives the reverse hook 101, which is under the force of a strong firing pin spring, so the action has a poor feel when the action is activated, which also has a significant impact on accuracy. This is not desirable as it will affect the

Means for Solving the Problems In order to improve the drawbacks of the conventional firing mechanism described above, the present application provides a mechanism for hooking the firing pin and connecting the first reverse hook and the trigger, which are subjected to the spring force of the firing pin spring. The first reverse hook is provided with a second reverse hook and the firing pin spring is acting.
This method eliminates the drawbacks of the conventional gun by locking the reverse hook with a second reverse hook to create a cocking state, and by preventing the trigger from being directly involved in cocking the gun.

Embodiments Next, the present application will be described in detail with reference to drawings showing embodiments. In FIG. 1, reference numeral 1 denotes a first reverse hook, which is pivotally supported on the trigger frame 2 and biased counterclockwise by a first reverse hook spring 3, but whose rotation is restrained by a stopper pin 4. The first reverse hook 1 is provided with a hook step 5 and a hook stop piece 7 that is hooked by a second reverse hook 6, which will be described in detail below. The second reverse hook 6 can be moved horizontally in the drawing by inserting a pull pin 10 installed in the trigger frame 2 into a long hole 8 bored in the longitudinal direction and a spring insertion hole 9. It is biased to the left by a second inverted hook spring 11 attached to the metal frame 2 and pressed into the spring insertion hole 9, and one of the pull pins 10 hits the elongated hole 8 to maintain the position shown in the figure. . A hook stopper 12 is protruded from the upper surface of the second reverse hook 6, and the hook stopper piece 7 of the first reverse hook 1 is in contact with the left side edge of the hook stop 12. Until the locking is performed as described later, there is no load and no load is applied, and the engagement distance between the hook stopper 7 and the hook stop 12 is designed to prevent shocks and the like from the standpoint of preventing sudden explosions. In order to ensure that the gun does not come off easily and that the shot is fired at the best timing, the optimal engagement distance is set in consideration of past experience, etc.

Finally, the trigger 13 will be explained. trigger 13
is pivotally supported on the trigger frame 2 in the same way as the first reverse hook 5, and has a firing piece 14 projecting upward and a leg piece 15 projecting laterally.
The percussion piece 14 is provided with a bulging point of action 16, and the tip of the leg piece 15 is provided with a locking groove 17. Numeral 18 is a trigger spring that urges the leg piece 15 counterclockwise by pressing it from below, and the spring force of the trigger spring 18 can be adjusted as appropriate by moving the trigger spring adjustment screw 19 back and forth. ing. Next 2
0 is a pull adjustment screw whose head 21 is locked in the locking groove 17 to control counterclockwise rotation of the trigger 13, and by moving the pull adjustment screw 20 back and forth, The rest position, that is, the amount of pull of the trigger 13 can be adjusted from a position where the point of action 16 contacts the rear end surface of the second reverse hook 6 to a position where the point of action 16 faces the rear end surface of the second reverse hook 6 with a predetermined interval as shown in the drawing.

Next, the effect of the present application will be explained using examples.
Since the amount of pull of the trigger 13 of the present application is adjusted as described above, first, a case of two-step pull in which the point of action 16 and the second reverse hook 6 are separated as shown in the drawings will be described. When the bolt (not shown) is operated and the locking is completed, the firing pin (not shown) is hooked to the hook step 5 of the first reverse hook 1, and the spring pressure of the compressed firing pin spring (not shown) is as shown by the arrow. It is the same as the conventional method that the first reverse hook 1 acts on the first reverse hook 1 as shown in FIG. Since the stopper piece 7 is hooked by the hooking part 12 of the second reverse hook 6 as described above, the first reverse hook 1 is in a hooked state by the second reverse hook 6, and the first reverse hook 1 is hooked by the second reverse hook 6. Since the second reverse hook 6 that hooks the first reverse hook 1 is acted upon by the firing pin spring from a direction substantially perpendicular to the direction of movement, it is possible to perform stable and reliable hooking.

As described in detail above, in the present firing mechanism, the firing pin is engaged by the first reverse hook 1, the first reverse hook 1, and the second reverse hook 6, respectively. In a free state without involvement, no external force is applied to the trigger 13 other than the spring force of the trigger spring 18. The firing is then carried out as follows. When the trigger 13 is pulled gently against the trigger spring 18 from the cocking state shown in the drawing, it rotates clockwise, and after a gradual rotation, the point of action 16 reaches the rear end surface of the second reverse hook 6. The finger that pulls the trigger 13 senses this at the moment it hits, and it is predicted that by pulling the trigger 13 further from now on, firing will occur. In this way, from the beginning of pulling until the point of action 16 hits the second reverse hook 6, there is one step of pulling,
The amount of pull during this time can be set as appropriate by moving the pull amount adjustment screw 20 back and forth as described above, and the pulling force for the first pull can also be adjusted using the trigger spring adjustment screw 19. After the end of the first pull is sensed and the firing is predicted, when the trigger 13 is pulled again and the second pull is performed, the point of action 16 pushes the second reverse hook 6, and the second reverse hook 6 presses the second reverse hook 6. The first reverse hook 1 is pushed out while pressing the spring 11 and momentarily releases the hooking of the first reverse hook, and the first reverse hook 1 rapidly rotates clockwise due to the biasing force of the firing pin spring and unhooks the firing pin. is opened and firing is performed.

Next, when the device of the present invention is used in a hunting rifle that does not require as high accuracy as a target or sniper rifle, it can also be used as a one-step puller. Turn the pull adjustment screw 20 and rotate the trigger 13 clockwise against the trigger spring 18 to adjust the point of action 16.
is brought into contact with the rear end surface of the second reverse hook 6, and by setting the amount of pull of the first stage trigger 13 to 0, a one-stage triggering mechanism is obtained. However, in this case, the point of action 16 and the second
The contact with the reverse hook 6 must be such that the second reverse hook 6 is not subjected to any pressing force by the trigger 13 by simply making light contact.

Effects of the invention As described in detail above, the present application has a second reverse hook interposed between the first reverse hook and the trigger so that the trigger is not directly involved in the cocking action, resulting in two-stage triggering, and By adjusting the amount of pull of the first pull, it is possible to shoot as a single pull, making it versatile. Furthermore, the first reverse hook of the present application has a long reverse hook piece and a large lever ratio from the pivot point to the hooked point;
Since the moving direction of the second reverse hook is perpendicular to the direction in which the force is applied, the firing mechanism has low operating resistance and has good sharpness and high accuracy.

[Brief explanation of the drawing]

Figure 1 is a side view with one side of the trigger frame removed, Figure 2
The figure is a side view of a similar conventional firing mechanism. DESCRIPTION OF SYMBOLS 1...First reverse hook, 6...Second reverse hook, 7...Hook stopper piece, 12...Locking part, 13...Trigger, 15...Leg piece.

Claims (1)

[Scope of utility model registration request] In the bolt action gun, a first reverse hook that hooks the firing pin and prevents the firing pin from protruding; a second reverse hook that hooks the first reverse hook and controls rotation of the first reverse hook; It consists of a trigger that acts on the reverse hook and releases the hooks of the first and second reverse hooks, and the point of application of the trigger to the second reverse hook is set at a predetermined distance from the second reverse hook. This gun firing mechanism can be arbitrarily adjusted from a holding position to a position where it abuts against a second reverse hook, and the trigger is not directly involved in the cocking action.