Rod lock
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A rod lock is a special box bolt lock with metal rods or locking shackles running up and down or to the left and right that lead into a lock box. It is intended to ensure that doors are closed particularly securely , but can also be found in furniture construction.
functionality
In order to achieve the opposite movement of the mounted rods, the locking mechanism usually has a gear drive. This works by turning a pinion via the actuation , which engages in the corresponding teeth of the drive rods, which lead out of the locking mechanism up and down. The rods sit to the right and left of the gear , which means that they move in opposite directions. The actual locking rods are connected to the drive rods of the locking mechanism.
For burglary protection , additional rods can be used across the width of the door, turn right and then left into the strike plate of the frame grab and thus make a lock on all four sides possible.
The rod lock is often found on two-door cabinets in furniture. It is usually attached to the right door and locks it by engaging the floor and ceiling of the cabinet. The door with the lock then has a striking strip so that the second door, which does not have a lock, is also held shut by it. This means that no additional lock (e.g. hook or bolt) is required for the lockless (left) door.
In another variant of the rod lock, the locking rods are not pushed but rotate. They are each provided with a specially shaped hook at the end that engages behind a pin in the floor or ceiling of the furniture. Due to the turning movement and the shape of this hook, the door is pulled when it is closed and closes particularly tightly.
literature
- Ulrich Poestgens: Locking and hinge technology in industry - individual solutions from the modular system . Landsberg 2001, ISBN 978-3-478-93257-8 .