Construction units coupling device for wrist watch, has insert with two contact units that interact with locking mechanism which includes movable pin to contact with contact units, where pin is pre-stressed in direction of rotation axis

摘要

The device has an inserting part (2) insertable into a base for coupling construction units, where the inserting part is rotatable around a rotation axis (3). The inserting part exhibits two contact units (4) that interact with a locking mechanism (5) which is attached to the base. The locking mechanism has a movable pin for contacting with the contact units, where the pin is pre-stressed in a direction of the rotation axis.