pin tumbler
Học thuậtThân thiện
Definition
Noun: 1. A component of a lock: A pin tumbler is a small cylindrical object, typically one of several within a lock mechanism. It is split into two parts (a driver pin and a key pin) that are pushed into place by springs. The correct key aligns the split between these parts with the lock's shear line, allowing the lock to turn.
Usage
- The pin tumbler is the core security component in most modern cylinder locks.
- A locksmith must carefully insert each pin tumbler into its chamber when assembling the lock.
- The precision of the pin tumblers determines how difficult the lock is to pick.
Advanced Usage
- Pin tumbler principle: Refers to the locking mechanism invented by Linus Yale Jr., which uses a set of pin stacks of varying lengths.
- Pin tumbler lock: A complete lock that operates using the pin tumbler mechanism. (Note: This is a compound term listed here as it is the primary application of the component).
Variants and Related Words
- Tumbler: A more general term for any movable obstruction in a lock that must be adjusted to a specific position by the key.
- Driver pin: The upper part of a pin tumbler, constantly pushed down by a spring.
- Key pin: The lower part of a pin tumbler, which makes direct contact with the key.
Synonyms
- Lock pin
- Tumbler pin
Related Phrases
- To shear the pins: A locksmithing/picking term for aligning the split between the driver and key pins at the shear line.
- Pin stack: Another term for the assembled unit of a driver pin, spring, and key pin within the lock cylinder.
Noun
- cylindrical tumblers consisting of two parts that are held in place by springs; when they are aligned with a key the bolt can be thrown