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The unlocking principle of the circular lock center-FUYU-img
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The unlocking principle of the circular lock center

by:FUYU     2020-03-03
When the bullet holes reminded by master Huang of Hainan are completely overlapped, the spring in the bullet hole of the lock body plays an elastic role and ejects the bullet in the bullet hole of the lock body upward. The bullet in the bullet hole of the lock body is pushed into the bullet hole of the lock core. At the same time, the original bullet in the hole of the lock core bullet is pushed upward. Because a long convex bar is stuck in the key hole of the lock core, the bullet in the bullet hole of the lock core is blocked, so that the bullet can not be ejected out of the bullet hole and taken off. When manufacturers produce locks, they have calculated the length of the bullet and the depth of the bullet hole in the lock core. Generally, the sum of the length of the two bullets in the lock body bullet hole and the lock core bullet hole is greater than the depth of the lock core bullet hole plus the length from the lock core bullet hole to the long convex bar. And the length of the bullet in the hole must be more than 1 / 3 of the length from the hole to the long convex strip. In this way, there is a long convex bar stuck in the hole of the bullet hole of the lock core without being ejected from the bullet hole. Then the bullet of the bullet hole of the lock body is partially ejected into the hole of the bullet hole of the lock core under the action of the spring. When the bullet in the bullet hole of the lock body is stuck in the bullet hole of the lock core, that is to say, the lock core is stuck, which means that the circular object is stuck, so that the circular object can not rotate at will. At this time, the lock is in the locked state, which is usually called 'locked'. However, after the key is extended into the keyhole, the slot on the key compresses the bullets in the keyhole downward, just enough to crush all the bullets in the keyhole and flatten the hole on the other side of the keyhole (the contact surface between the keyhole and the keyhole). At this time, all the bullets in the keyhole are pressed down by the bullets in the keyhole Function, also all are flattened lock body bullet hole, back to the lock body bullet hole. At this time, the bullets in the bullet hole of the lock body can't be stuck in the bullet hole of the lock core, and the bullets in the bullet hole of the lock core can't be pressed down into the bullet hole of the lock body, that is to say, there is no thing to block the circular lock core. Then the key can be used to rotate the lock core. After the lock core rotates, the mechanism in the lock body will be driven to open the lock. This is the principle of unlocking. Therefore, as long as it is a circular lock, its unlocking principle is exactly the same.
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