DE2324360A1 - SECURITY LOCK RELEASED BY ACCELERATORS - Google Patents

Description

COHAUSZ & FLORACK

PATENT AGENT S BÜRO 4 DÜSSELDORF 8CHUMANN8TH. 97 232A360

PATENT LAWYERS: Dipl.-Ing. W. COHAUSZ Dipl.-Ing. W. HORAOC Dipl.-Ing. R. KNAUF · Dr.-Ine-, Dipl.-WirtKh.-lng. A. GERBEK

FÖHMADS FABRIKSVERKEN

631 87 Eskilstuna / Sweden May 12, 1973

Safety lock that can be released by acceleration forces

The invention relates to a safety lock which can be released by acceleration forces.

In order to obtain a safety lock, for example for a safety device, in a design that responds to the acceleration, which is not triggered as a result of short, strong impacts or the like, but on the other hand responds as a result of a relatively slow but long acceleration path in a tube, long overall lengths have been used so far been necessary if the safety lock only works with spring tension. The greater the speed difference Ay during a short time At (Δι fi 0.2 msec in the event of an impact) that a safety lock must be in place without triggering, the longer a movement of the spring-loaded mass must be possible. If the braking distance is to be shortened, the spring force is too strong for the lock to be released for the long but slow acceleration for which it is intended to be released.

The invention relies solely on relationships between weights and Springs, but still needs a relatively small length, even for high demands. It is also able to deal with large manufacturing tolerances the weights and springs are worked.

The Sicherheitwsschloß is characterized in that it is for a short duration or pulsating mechanical vibrations such as shocks, ' Vibrations and other disturbances is very stiff, but "weakens" and gradually triggers if the disorder persists for a certain period of time. A number of known backups that, due to carrier

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triggering forces, on the other hand, are disadvantageous because the movement when responding discontinuously komtat, i.e. suddenly and immediately and without interruption, and release certain bolt locks / in fact, the mechanism is not in its initial position returns after the shock finally stops. To the security lock To let respond according to the invention, it is on the contrary not sufficient that the acceleration - or in general the change in speed - exceeds a certain value, but it must also have a certain duration, which can be predetermined. If the speed change does not last long enough, the lock will return to its original position. The functionality of the security lock is based only on the relationship between the weight of the actual lock and the weight of an auxiliary mass and on a pair of spring forces, but not on such unreliable variables with regard to calculation as frictional forces, tension forces etc.

The invention is explained in more detail below with reference to the drawing.

The Sicherheitssdioß has a small weight or a bolt 1 with a neck which fits into a driver sleeve 2, which is designed as a cylinder with an inner flange 2a and an outer flange 2b at one end. A larger weight piece 3 sits displaceably around the driver sleeve 2, and this weight piece 5 has a recess which corresponds to the outer flange 2b. A soft spring 4 tensions the bolt 1 by a distance in means 7f which secure the normal safety chain such as an eotor with a diametrically arranged detonator. The inwardly directed flange 2a of the driver sleeve 2 is tensioned relatively strongly against the neck of the bolt 1 by a strong spring 5, and the large mass 3 in turn is tensioned in the same direction by a somewhat softer spring 6. The bolt 1, the driver sleeve 2 and the springs 4 ¹ ^ d 5 form a very stiff unit, which remains stiff until the large mass 3 has migrated by the distance S in order to attack the outwardly directed flange 2b, which takes some time. The moment the

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Checkout 3 begins to compress the strong spring 5, the bolt 1 released. Even if the acceleration forces are weak, they can now easily push the bolt 1 backwards. If such Forces are still present, the security bolt 1 migrates out its hole in the locking means 7 'and the detonator is switched on. Since, as mentioned above, it takes a certain time until the mass 5 has moved the distance S, the safety lock withstand relatively high accelerations for a short time while moving through the tube together with a projectile the safety lock loses its stiffness before the projectile has left the gun barrel. When a missile is launched, it will look low Long duration accelerations asked what as opposed to a strong one Shock stands.

A drop test for example from a height of 4 ω shows that at a rebound of the bullet to about 2 m, the change in speed is about 15 m / sec and the braking time about 0.2 msk. amounts to. If the f Mass 3 would be fully free-flying, it still moves only 0.2 χ 15 = 3 ran before the shot is over. The locking pin 1 can of course migrate a few millimeters down, depending on the acceleration the springs 4 and 5 of the bolt 1 and the driver sleeve 2 in the enter extended position. The greater the relationship between masses 3 and 1, the greater the relationship between the spring forces for springs 5 and 4 can be selected. The optional function of the locking mechanism, i.e. to distinguish between occasional bumps and careless handling and intentional acceleration in a gun barrel is even more pronounced in this case. The driver sleeve 2 should also be made as easy as possible. Another feature of the invention is that the manufacturing tolerances for the masses and the springs need not be very precise for this embodiment.

The invention is not limited to security locks for floors, but can also be used in other areas of application in which a selective i ^ eniaor is required for speed changes. It may possibly require different types of

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Delays and collisions between different types of vehicles within the development work for greater Yerkehers security to distinguish.

Expectations

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Claims (4)

Expectations 1. Safety lock to trigger as a result of an acceleration of the same for a certain duration, characterized by a heavy mass body (j), which goes in a direction opposite to the direction of acceleration is tensioned by a return spring (6) and the in Relative to a Hitnehiaerhülse (2) is movable, wherein the driver sleeve (2) is tensioned in the same direction as the heavy mass body (j) by a second strong spring (5) and with a stop (2b) is provided, on which the heavy mass body (3) strikes when this has moved a certain distance (S) depending on the acceleration of a certain duration against the action of the return spring (6), wherein the driver sleeve (2) not actuated by the hatch body (3) Locking bolt (1) locks light weight, which is in the same direction as the heavy mass body (3) and the driver sleeve (2) by a soft spring (4) is tensioned in such a way that when the heavy mass body (3) moves a greater distance than the certain distance (S) the driver sleeve (2) moves against the action of the strong spring (45) is and thereby the locking pin (1) is released, the Maese is such that the locking pin (1) can precisely overcome the force of the soft spring (4), so that the locking pin (1) in turn the releases funds blocked by him. 2. Safety lock according to claim 1, characterized in that the Return spring (6) of the heavy mass body (3) and the strong spring (5) of the driver sleeve (2) lie against the same support, in such a way that the heavy mass body during its ewegung around the certain Distance (S) counteracts the force of the return spring (5) while during its further movement it is counteracted by the combined force of the return spring (6) and the stiff spring (5). 3. Safety lock according to claim 1 or 2, characterized in that the joint sleeve (2) as a cylinder surrounding the locking pin (1) is formed and has an inner flange (2a), which has a cupport for the strong spring (5) with one edge and with its opposite edge Edge a support for a shoulder in the locking bolt (1) 309883/0382. ₂ - forms, and that the heavy mass body (j) as a driver sleeve se (2) enclosing one cylinder and an inner one towards the rear has directed shoulder, which forms a support for the stop means of the driver sleeve (2), also an outer, rearward directed shoulder, which forms a support for the return spring (6). 4. Safety lock according to one of claims 1 to 3, in a detonator for a projectile or the like, in which the mass body is moved by the acceleration forces when the projectile is fired, in such a way, that the detonator is armed, indicating that the Locking bolt (1) blocks an element for transmitting the fuze energy of the detonator to the explosive charge of the projectile, in such a way that the mass body (3) is set up to move a first certain distance (S) only against the action of the return spring (6), a system takes place on the driver sleeve (2), then by a second certain distance against the combined effect of the return spring (6) and the strong spring (5) »in order to release the locking bolt (1), which by its own indolence wanders out of his engagement with the elephant who is blocked by it in such a way that the transfer of fuze energy from the detonator to the charge of the projectile is made possible. 309883/0382