Watches, as a consumable and exist in the design of the time has been taken into account the situation against the outside interference, including shock; watch the shock performance is not simply refers to the bumps, including acceleration overload and shock, this situation is often In sports and production activities will appear.From the watch to the watch the evolution of the process, not just smaller, mainly in the travel time and the improvement of anti-interference, it is used on the balance wheel, so you can carry; but the antique imitation Cartier love bracelet clock or pocket watch is very Squeaky, they can not afford to hurt, the outside of the vibration and shock is very easy to make its escapement and the balance wheel with the problem; for this, and about 200 years of improvement, people tried a variety of Escapement form, modern watches are basically in the use of leveraged escapement.(1) the body has a traction, escapement teeth on the escapement fork fork cut into an angle that will make the escapement of the escapement of the escapement (2) there is an insurance design, even if the external force can make the escapement fork movement, escapement fork of the insurance nail and the balance wheel of the next round (Insurance plate) between the insurance measures will block the escapement fork to continue to move, and let it under the action of the traction torque reset; another point is the swing wheel plate nail and escapement fork between the mouth there are insurance, Once beyond the gap between them, it will produce a block, in short, that is, can not let escapement fork to escape its right position.But all of these insurance is not foolproof, and some watches in the impact of severe vibration, or to the problem, the most important and common problem is the occurrence of anti-pendulum. The so-called anti-swing also called back pendulum, these are commonly known, the real meaning is the escapement fork from the right position, jump to the other side to the original it and the balance wheel with a good Replica Cartier jewelry brother like, in the outside world Interference, the moment it turned back betting balance wheel.(Mostly along the dial 6 to 12 characters in the direction of the force), watch movement in the upper and lower shock absorbers will produce radial movement, resulting in a reasonable insurance gap about no For example: escapement fork should be honest to stay in the left, but it is under the action of external forces, not subject to the insurance agency constraints, it jumped to the right to go, the balance of the shock came back there is no collusion, When the swing came, it should be hit in the escapement fork on the inside, to drive the escapement fork movement, and this time but hit the escapement fork on the outside, can no longer enter the fork, escapement and vibration system With the, which belongs to the classic infarction, the watch suddenly stopped to go away.Watch the shock test, but also with 3KG heavy impact hammer percussion watch (impact hammer arm length 50CM), instantaneous impact speed of up to 4.43m / s, this experiment is very powerful, but life encountered many shocks It is bigger than it. Watch the back there is a feature, no matter how you shake the watch, even the second hand are motionless, are dead and mortal, this and the general case of the watch stop is different, if it is caused by the closure of the table, the second hand in the shaking At least can take two steps or before and after the swing.If it is back through the back of the watch, then you keep rotating shake the watch, watch the balance wheel, it is basically immobile, or only a small swing to a direction of the stop. Repair the back of the watch back to the fault is very easy to remove the pendulum plywood re-pendulum to solve, and that is appropriate to immediately take effect that kind of repair table master love this work. But the recurrence of the phenomenon of the back of the watch, may have to pay attention to it, it must be the escapement of the insurance gap out of the problem, and should change the escapement fork or check and narrow the escapement of the points (mainly fork Nail and insurance plate) between the insurance gap.