FI76211C - Weapon locking device - Google Patents

Description

1 76211

Locking device for the weapon

The invention relates to a locking device for a bolt-locked weapon, comprising a locking frame; locking bolt »with 5 cranks, by means of which the locking bolt can be moved in the locking frame and locked to it; and a guide sleeve between the lock bolt and the inner surface of the lock frame, wherein the lock bolt includes locking lugs for locking the lock bolt to the lock frame, and the inner surface of the lock frame has grooves 10 for locking latches of the lock bolt.

Such a locking device is very common, especially in single-shot rifles. The locking device is closed by pushing the locking bolt forward from the crank and turning the crank, whereby the locking latches on the locking bolt lock-15 behind the mating latches in the locking frame.

As it pushes forward, the locking bolt carries the cartridge from the magazine to the cartridge housing. When the weapon is fired, the locking device is opened by turning the crank, whereby the locking between the locking shoulder blades and the counter shoulder blades is lost, and the is-20 0 discipline is tuned for a new shot. The locking bolt can then be pulled back out of the crank, causing the sleeve to fly out of the cartridge housing.

From the point of view of the operation of the weapon, the fit between the locking bolt and the locking frame is very essential, i.e. it is important that the locking bolt is guided in the frame as well as possible, so that the movement of the locking device is well controllable. Both too loose and too tight a fit between the locking bolt and frame will cause malfunctions and make it difficult to handle the gun. The significance of these problems is particularly pronounced in racing weapons. However, in the pursuit of a high-quality and reliable locking device, the structure easily becomes complex and massive, which means that the manufacturing costs also become high.

35 Finnish Patent Publication No. 62,591 discloses a locking device in which an attempt has been made to improve operational reliability by placing a guide tube on the locking bolt which is rotatable relative to the locking bolt but non-rotating relative to the locking frame. The guide tube moves only axially with respect to the locking frame and only rotatably with respect to the locking bolt. The mutual non-rotation of the guide tube and the lock frame is achieved by shaping the guide tube and the inner surface of the lock frame in a cross-section substantially truncated at their tips. The locking frame does not have separate grooves for the locking bolts of the locking bolt, but the locking lugs have a cross-section corresponding to the shape of the inner surface of the guide tube and the locking frame. As a result, the side of the barrier shoulder becomes narrow at the center and does not want to withstand the stresses caused by the explosive pressures generated during firing. On the other hand, the lock structure becomes massive and heavy because the cross-sectional area of the inner surface of the lock frame becomes large.

A locking device is also known from Finnish patent application 860 031, in which the locking bolt is placed inside 20 guide sleeves. The locking bolt is rotatably and axially fixedly mounted on the guide sleeve.

Also in this structure there is almost the whole locking bolt inside the guide sleeve. The guide sleeve has longitudinal guide strips for which the locking frame has guide grooves. The locking shoulders of the lock block 25 run in the same guide grooves as the guide rails. Due to the bearing and the massive guide sleeve, this structure also becomes complicated and heavy. The solidity is further increased by the large rear part of the lock, which covers the guide grooves in the lock frame.

It is therefore an object of the present invention to overcome the problems described above and to provide a locking device which has good controllability and which at the same time is simple, light and cheap to manufacture. To achieve these objectives, in a locking device of the type 35 initially described, a guide sleeve is fitted to the rear of the lock frame so that its leading edge closes the grooves of the closing shoulders.

The basic idea according to the invention is thus to place the guide sleeve only in the rear part of the lock frame, so that at the same time it acts as a rear piece, which prevents the explosive gases from entering backwards towards the user of the weapon. Thanks to this solution, both good control of the lock and a light and simple structure are achieved, since a large rear part of the lock blocking the grooves of the closing shoulders is not required. Thanks to the guide sleeve, the locking bolt slides well in the frame 10 and the opening and closing takes place silently. By making the guide sleeve from a suitable material, the luster of the lock is maintained and at the same time operational reliability and sensitivity.

The invention will now be described in more detail with reference to examples according to the accompanying drawing, in which Figure 1 shows a longitudinal cross-section of a rifle with a locking device according to the invention, Figure 2 shows a cross-section of a locking bolt and frame taken along line II of Figure 1, -20 diagrams seen along line II-II in Figure 1.

Figure 1 shows a locking device according to the invention in a rifle, in which the parts on the front and back of the lock are not shown. The locking device comprises a locking bolt 1 and a locking frame 2 comprising a front part 2a and a rear part 25 2b. The locking bolt 1 has a crank 3 (cf. Figs. 2 and 3), by means of which the locking bolt 1 can be moved in the locking frame and locked to it. In Fig. 1 the locking device is shown closed, the locking bolts 4 of the locking bolt being locked behind the mating shoulders 5 in the lock frame. The lock bolt 1 comprises, in a known manner, a striker 6 with an shock spring 7. A guide sleeve 8 is arranged around the lock bolt 1 around the lock bolt 1 and fastened to the rear part 2b of the lock frame by a suitable latch device (not shown). The Oh-35 spring sleeve 8 surrounds the locking bolt 1 to such an extent that its rear surface 8a forms part of the outer surface of the weapon.

Fig. 2 shows grooves 9 in the lock frame, in which the locking lugs 4 slide when the locking bolt is moved by means of the palm 3 in the locking frame 2. Fig. 3 shows how the front edge 8b of the guide sleeve 8 (cf. Fig. 1) covers these grooves of the locking lugs. explosive gases cannot enter the eyes of the weapon user along the grooves. Thanks to the structure according to the present invention, the locking device does not require a groove-blocking rear part of the lock, whereby the structure of the locking device is lightened and simplified.

Figure 1 shows the locking device tuned ready for release. In this case, the tuner body 10 of the striker is tuned to the tuning support 11 of the triggering mechanism and the shock spring 7 of the trigger mechanism 15 is compressed. When the weapon is triggered, the tuning support 11 moves downwards from the trigger 12 and the striker 6 strikes with its tip in a known manner on the detonator of the cartridge in the cartridge housing 13. After triggering, the locking device is opened by turning the crank 3 about 90 degrees upwards, whereby the locking between the locking shoulders 4 and the counter-locks 5 is opened and the locking locks are positioned in the locking frame 2 at the grooves 9 therefor. At the same time, the striker 6 is tuned in a known manner due to the inclined surface at the rear end of the locking bolt. The locking bolt 25 can then be pulled back, whereby a puller (not shown) throws the sleeve out of the cartridge opening. When the locking bolt 1 is pushed forward again to the position according to Fig. 1, the front edge of the locking bolt carries the cartridge magazine 14 into the cartridge housing 13 and the tuner body 10 again rests on the support bracket 11, so that the crank 3 can be turned down in its groove When the crank is turned, the closing latches 4 are again placed behind the mating lugs 5, whereby the lock is closed, and the weapon is ready to be fired again.

35 Since the triggering and tuning mechanisms are known per se in structure and do not fall within the scope of the actual inventive idea, they are not described in more detail in this connection. One skilled in the art will also be able to implement these mechanisms in a number of different ways.

The guide sleeve 8 is preferably made entirely of plastic. It is installed either by removing the handle 3 or by injection molding it onto the finished lock. As previously stated, the guide sleeve is attached to the rear part 2b of the lock frame by means of a simple latch device. When disassembling the locking device, the lock-10 bolt 1 and the guide sleeve 8 are removed together from the locking frame 2.

Although the invention has been described above with reference to the examples according to the accompanying figures, it is clear that the invention is not limited thereto, but can be modified in many ways without departing from the scope of the inventive idea defined by the appended claims. Thus, the guide sleeve can also be made, for example, in a spiral shape, in which case it can be threaded onto the finished locking bolt. The material of the guide sleeve is also available in many ways. The guide sleeve can, for example, consist of a metal sleeve coated with plastic.

Claims (4)

6 76211 A weapon locking device comprising: - a locking frame (2), 5. a locking bolt (1) having a crank (3) by means of which the locking bolt can be moved in and locked in the locking frame, and - a locking bolt (1) and a locking frame (2) a guide sleeve (8) between the inner surface, the locking bolt (1) having locking latches (4) for locking the locking bolt to the locking frame (2), and the inner surface of the locking frame (2) has grooves (9) for locking latches (4) of the locking bolt (1) , characterized in that - the guide sleeve (8) is arranged in the rear part (2b) of the locking frame (2) 15 so that its front edge (8b) closes the grooves (9) of the closing shoulders. Locking device according to Claim 1, characterized in that the guide sleeve (8) is fixed relative to the locking frame (2). Locking device according to Claim 1 or 2, characterized in that the rear surface (8a) of the guide sleeve (8) forms part of the outer surface of the weapon. Locking device according to one of the preceding claims, characterized in that the guide sleeve 25 (8) is made of plastic.