FIELD: clocks and other time measuring instruments.
SUBSTANCE: present invention relates to clasp for clocks. More specifically, present invention relates to folding or unfolding fastener. Unfolding buckle comprises a lower arm and an upper arm, pivotally connected to each other, as well as a back fastener pivotally connected to the upper arm. Fastener may be in folded position, wherein upper arm is folded on lower arm, and return fastener folds on upper arm in longitudinal direction of fastener. Detachable fastener further comprises a locking system partially disposed between the return fastener and the upper arm for locking the fastener, located in a folded position, as well as a locking system with a sliding unit, in which a locking socket is made, interacting with the locking pin, wherein the locking pin is inserted into the locking socket when the fastener is in a folded position.
EFFECT: technical result is improved lock of unfolding fastener, in particular, for protection against theft, in particular from pocket theft.
12 cl, 7 dwg
