Automatic watches and semi-automatic watches are called automatic watches, is in the automatic watch machine heart to add a set of automatic stripe mechanism, to replace the work of people stripe every day.Its automatic upper mechanism is an eccentric element- -an automatic cone and a set of gears.Automatic watch on the wrist, can use the arm of the arm, to achieve the purpose of tight hair stripe.The automatic bar mechanism is generally installed outside the upper splint. When we open the rear cover of the automatic table, we can see the automatic bar device.Therefore, from the appearance, automatic watches are generally thicker than ordinary watches.
When the watch is worn on the wrist with the arm activity, the automatic hammer under the action of inertia, it drives the automatic upper mechanism, around the axis in the positive and negative directions for the full weekly operation, the hair stripe is also slowly tightened to the ground.Because this kind of mechanism is dizzy in both positive and reverse directions, it can meet the upper requirements, so it is called a two-way upper mechanism.There is also an automatic watch, the automatic hammer can do full operation, but its upper function is one-way, generally classified as a fully automatic watch. A semi-automatic watch is an older automatic watch, and its automatic upper bar mechanism is made up of an automatic hammer, a set of gears, and a block splint