The structure of the pin lock

The structure of the pin lock

1. Lock core: a cylindrical lock core made of copper, which can be locked or opened when rotated. The lock cylinder is divided into an inner lock cylinder and an outer lock cylinder. The inner lock cylinder is where you insert the key.
2. Marbles: Copper marbles are divided into inner and outer marbles. They are cylindrical and have different lengths. They are installed in the round holes of the inner and outer lock cylinders. A lock generally has 3 to 5 sets of marbles. To
3. Spring: installed in the round hole of the outer lock core. Withstand the marbles. To
4. Lock tongue: the part that stretches when unlocking. When the cylindrical inner lock core rotates, the lock tongue is driven. The padlock is to drive the lock “nose”. To
5. Key: Needless to say, there are different heights of “serrations” corresponding to different lengths of marbles. To

When we unlock the lock, we can use its structure to unlock the lock and find out the corresponding skills.

The structure and principle of the (mechanical) pinball lock are actually very simple. What I want to say here is that almost all pin locks, such as flat locks, cross locks, side (column) bolt type gold-point atomic locks, and idling type ( Crescent) Keyma locks, etc.) The lock cylinders are all “top pin-opening” (abbreviation: top-top opening) and there is a “straight cylinder space” (or a slightly curved cylinder space)

Top opening method: the unlocker uses a key or a special tool to push all the marbles into the uppermost end, with the help of torsion, with the help of the step surface between the inner and outer lock cylinder pin holes, under the action of the spring force, the inner The pin falls back and the outer pin is blocked from the inner lock cylinder, thereby opening the lock. For the high-end anti-theft pin locks currently on the market, although their structures are different, their technical opening methods and tools are also different, but because they are all “top opening”, the fundamental principles are the same. To
Why can only one key open a lock? To

The cylindrical lock core made of copper can be locked or opened when rotated. I think what you want to know is how the lock cylinder corresponds to different keys. Insert the key into the lock cylinder. The “teeth” of the key with different heights correspond to the copper marbles with different lengths inside. Their length is just such that the other end of the inner pin is flush with the inner lock core hole, which means that inserting another key, due to the different shape of the “tooth”, will cause some inner pins to be exposed or recessed! As long as one is exposed or recessed, the inner lock core can be locked and cannot be rotated. It cannot be unlocked. Different lengths and combinations of marbles correspond to different keys. That is, one key can only open one lock. To

Because the locks are manufactured in batches, different marbles and combinations are limited, so there is a possibility of repetition of locks produced in batches, that is, sometimes, one key can open two locks. This probability depends on the number of marbles and the number of combinations. To
Knowing the above principles, when buying a pin lock (anti-theft pin lock), you should first observe the keyhole to prevent counterfeit and shoddy products from lacking marbles. You can use a fine needle to pull and press the key to observe or twitch the key to listen to the sound. Pinball), especially depending on the tooth profile of the key. Pinball locks with shallow front and rear teeth have a large difference in depth and depth, and their performance in preventing low-level stealing is better. Please note: it cannot be absolutely prevented! It’s just that the performance is much better.

When the key is not inserted, the blue flat-headed pin (driver pins, also known as the upper lock spring or the upper bead) in the lock is pushed down, so that the plug cannot be rotated
Put in the correct key, the blue flat pin and the red pin (also known as the lower pin or the lower pin) are in a straight line and aligned with the yellow lock cylinder.
When the space between the marbles is aligned with the rotation line, the yellow lock cylinder can be rotated


what non-shimmable elements do padlocks use to keep the shackle in place?

Lock picking

Electromagnetic lock

Key structure example

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