CZ287145B6 - Automatic pistol - Google Patents

Abstract

The invented automatic pistol (10) has a body (11) a trigger mechanism slotted link (21) being coupled with a trigger (14) and moving forward and rearward with respect to the body (11) during pistol (10) operation, further a stop for restricting movement of a breech and aids for prestress of the trigger slotted link (21) and for engagement with the stop. The pistol (10) further contains a flat spring (28, 40) having a front end (28a, 40a) and a rear end (28c, 40c) and a middle section (28b, 40b) where the front end (28a, 40a) is situated in the body (10) and the rear end (28c, 40c) is situated in the trigger mechanism slotted link (21, 21ˆ), a first mechanism for mounting the spring (28) on the trigger mechanism slotted link (21,) for retention said flat spring (28) rear end (28c) in order to force the rear end (28c) in the trigger mechanism slotted link (21) and against said slotted link (21), a second mechanism for mounting the flat spring (28, 40) on the pistol (10) body (11) and a recess (20) in a safety pin (17) for engagement with the flat spring (28, 40) front end (28a, 40a in order to prevent transversal movement of the safety pin (17).

Description

Automatic pistol

Technical field

BACKGROUND OF THE INVENTION The present invention relates to an automatic pistol having a body, a trigger mechanism coupled to the trigger and movable forward and backward relative to the body during operation of the pistol, a stop for restricting the slide movement and a biasing device for the trigger.

BACKGROUND OF THE INVENTION

U.S. Pat. No. 4,575,963 discloses pistols which are provided with a trigger mechanism and pulled by a plunger spring arrangement. Further, U.S. Pat. No. 4,627,184 discloses fuses comprising openings into which springs engage.

With good efficiency these elements are relatively bulky and adversely affect the size of the weapon. It is an object of the present invention to overcome this drawback.

SUMMARY OF THE INVENTION

The present invention provides an automatic pistol having a body, a trigger mechanism associated with the trigger and movable forward and backward relative to the body during operation of the pistol, a stop for restricting the slide movement and a biasing device for the trigger and engaging the stop. The pistol further comprises a flat spring having a front end, a rear end, and a central section, wherein the front end is disposed in the body and the rear end is disposed in the trigger mechanism, a first spring receiving means on the trigger mechanism to retain the rear end of the flat spring for pushing the rear end into and against the trigger mechanism slider, the second device for receiving a flat spring on the gun body, a recess in the fuse for engaging the front end of the flat spring to prevent lateral movement of the fuse.

According to one preferred embodiment, the first flat spring receiving device is a gate opening and a gear lever on the trigger mechanism slider, the second flat spring receiving device is a recess in the gun body, and the flat spring is received in the fuse.

In another possible embodiment, the recess has a bearing surface and the flat spring engages the bearing surface to bias the fuse into a rotational movement.

According to another embodiment, the rear end of the second flat spring has a partial bend and the first flat spring receiving device is a second recess in the trigger mechanism.

The central section of the second flat spring may form a complete circular thread.

In general, according to the invention, a piston is provided with a flat spring that biases the trigger mechanism of the pistol having the body and the front and rear breech, and engages the trigger mechanism to prevent lateral movement and bias of the shaft to keep the fuse in position. or close to the body when the gun is operating.

As a result of the invention, the spring functions to both bias the trigger mechanism and bias and control the movement of the fuse.

-1 CZ 287145 B6

Overview of the drawings

Giant. 1 is a partial elevational view of an automatic pistol according to the invention.

Giant. 2 is a partial cross-sectional view taken along line 2-2 of FIG. 4 and illustrating the body, bolt, trigger mechanism, and flat spring actuated in the rest position.

Giant. 2a is a section according to section 2a-2a of FIG. 2.

Giant. 3 is a cross-sectional view taken along line 3-3 in FIG. 2.

Giant. 4 is a top view of a gun, part of which has been removed, showing a flat spring and respective components.

Giant. 5 is a view similar to FIG. 2 where the gun trigger is in the depressed position.

Giant. 6 is a front elevational view of another embodiment of a flat coil spring.

Giant. 7 is a top view of the spring of FIG. 6.

Giant. 8 is a partial elevational view of the rear portion of the trigger blade where a second embodiment of the flat spring is incorporated.

Giant. 9 is an enlarged elevational view of a cavity for receiving a rear portion of the trigger mechanism.

Giant. 10 is a sectional view taken along line 10-10 of FIG. 9.

DETAILED DESCRIPTION OF THE INVENTION

In Figures 1 and 2, the pistol 10 includes a body 11 with a top surface 115, a stock 12, a tumbler 13, a visor, a trigger 14, a barrel 15, a trigger guard 16 and a fuse 17 including a pin 17a, fuse lever 17b and its stop 17s. The stop 17s of the fuse lever 17b is normally urged against the body surface 11 by a spring 28, 40, as explained below. Further shown is the trigger 19 of the trigger 14, the trigger mechanism slide 21, the faucet 22 and the faucet pin 22. The trigger slide 21 has an L-shaped transmission lever 26 having a vertical surface 26a and a horizontal surface 26b.

The flat spring 28, which is located below the link 21 of the trigger 14, has a front end 28a that is substantially straight up to the front beak 28f, a middle section 28b, and a rear end 28c that is substantially straight up to the bend 28t. The middle section 28b has two legs 30a, 30b and a lower portion 30c. The beak 28f is received in the opening 11a of the gun body 11. The rear end 28c is received in the gear lever 26 to hold the bend 28t in the opening 21a of the trigger mechanism.

The front end 28a of the spring 28 engages the recess 20 of the pin 17a to prevent lateral movement of the pin 17a and for the pin 17a to be rotated clockwise as shown in FIG. 2. The recess 20 has a vertical wall 20a according to FIG. and an inclined wall 20b and a lower abutment surface 20c. The spring 28, as shown, engages a portion of the abutment surface 20c, this engagement giving bias pin 17a for clockwise rotation according to arrow A of Figures 2 and 5, thus pushing the lever 17b of the latch 17 against the body H.

The flat spring 28 is preferably made of spring steel, so modified and shaped that the vertical wall 20a is pushed upwardly into the recess 20 and the middle section 28b is compressed, the arms 30a. 30b move towards each other when the trigger 14 is depressed and the slide 21 of the trigger mechanism moves forward. When the trigger 14 is fully depressed, the spring 28 pushes the trigger slide 21 back and up.

-2GB 287145 B6

Since the spring 28 is long and narrow, it is able to perform the dual function described and does not need much space.

In operation of the pistol, the springs 28 act to prevent the pin 17a of the fuse 17 from transverse movement, that is to say, perpendicular to the barrel 5, so that the fuse 17 is biased to rotate and the trigger mechanism slide 21 is biased back and up. When the trigger 14 returns, the trigger slide 21 moves forward and strains the ends 28a, 28c and the middle section 28b of the spring 28, but particularly the middle section 28b.

6-10 shows another embodiment of the invention wherein the second flat spring 40 has a second front end 40a, a second beak 40f, a second central section 40b comprising a complete thread 401, a poultry rear end 40c, and a rear bend 40h of the second flat spring 40. The bend 40h is disposed in the second recess 41 of the second slide 2Γ of the trigger mechanism, the second slide 21 'having a surface 21s. The second recess 41 has an inlet 42 limited by the flat inclined walls 43 and 44. The second recess 41 has an inclined wall 46. The flat inclined walls 43, 44 have edges 43a, 44a in the plane of the surface 21s of the second slide 21 'and the edge 43b, 44b inside. backdrops 21 '. Similarly, the curved sloping wall 46 has a sloping wall edge 46a lying in the surface 21s and an inner sloping wall 46b located within the second slide 21 'of FIG. 10. In addition, the second recess 41 has a cylindrical section 48 extending further into the interior. the second gate 21 'and limited by the inner edge 46b of the inclined wall and the surface 49 of the second gate 21'. The cylindrical section 48 has a peripheral wall 51 of FIG. 10.

The bend 40h comprises a straight arm 52a and a curved portion 52b, the elements being moved relative to each other so that the bend 40h can be compressed for insertion through the inlet 42 of the second recess 44. The beak 40f of the second flat spring 40 is anchored in the same manner as the previous embodiment. During assembly, the second flat spring 40, including the thread 401, is tensioned to hold it in the anchored position.

In operation of the second flat spring 40, the bend 40h must be compressed to introduce it into the second recess 41 by the inlet 42 once the bend 40h has been so installed, the straight arm 52a can be moved forward or backward due to the shape of the inlet 42 when engaging the beak 40f of the second flat spring 40.

Claims (6)

PATENT CLAIMS An automatic pistol having a body, a trigger mechanism coupled to the trigger and movable forward and backward relative to the body in operation of the pistol, a stopper for restricting the movement of the breech and a biasing aid for the trigger and engaging the stopper, comprising a flat spring (28, 40) having a front end (28a, 40a), a rear end (28c, 40c) and a middle section (28b, 40b), wherein the front end (28a, 40a) is located in the body (11) and the rear the end (28c, 40c) is located in the trigger mechanism link (21, 2Γ), the first spring mounting means (28) on the trigger mechanism link (21) to retain the rear end (28c) of the flat spring (28) to push the rear end (28c) into and against the shutter (21) of the trigger mechanism (21), a second device for receiving a flat spring (28, 40) on the body (11) of the gun (10) and recess (20) in the engagement lock (17) with front end (28a, 40a) flat springs (28, 40) for preventing transverse movement of the fuse (17). -3 / An automatic pistol according to claim 1, characterized in that the first means for receiving the flat spring (28) is an opening (21a) in the gate (21) and a gear lever (26) on the gate (21) of the trigger mechanism. Automatic pistol according to claim 1, characterized in that the second device for receiving the flat spring (28) is a recess (20) in the body (11) of the gun (10) and the flat spring (28, 40) is received in the fuse (17). ). An automatic pistol according to claim 1, characterized in that the recess (20) has an abutment surface (20c) and the flat spring (28, 40) engages the abutment surface (20c) for biasing the fuse (17) to rotate. . An automatic pistol according to claim 1, characterized in that the rear end (40c) of the second flat spring (40) has a partial bend (40h) and that the first device for receiving the flat spring (28, 40) is a second recess (41). 21.2 Γ of the trigger mechanism. An automatic pistol according to claim 1, characterized in that the central section (40b) of the second flat spring (40) forms a complete circular thread (40).