Frequent use of locks, its structure can be described as the complex structure of the general lock, this lock is the lock cylinder, marbles, spring, bolt, keys, etc. It is now most commonly used as a lock. Connected to the material and structure of the lock cylinder.

Most lock heart to make a harder metal lock people use in daily life are based on copper production, copper not rust, copper, iron and other metals will not stick knot adhesions. Copper is relatively hard, and has good toughness, not easy to break. This is why the election for Copper lock cylinder reasons.

Lock heart Another advantage of using a copper wall system is not easily oxidized. Brass locks heart lock even activities open a few will be able to hang in the open air under the sun and rain for a long time, though not good on, but as long as a few drops of oil (such as kerosene, oil, best sewing Oil) lock function is restored as ever.

Lock cylinder drilled several small holes in the circular lock heart, again in the lock body position at the corresponding lock heart small holes drilled on the same number and caliber size small holes. Typically, small holes called marbles hole of the lock body and lock heart.

So, the role of the marbles are used jammed lock heart lock heart can not just rotate this structure principle easier use of locks.