Connecting device for connection of steel watch bands, has space fillable with metal material under protrusion unit interlocked at lateral element, where filling occurs by press cut of protrusion unit using stamping press

摘要

The device has a groove (2) provided at a steel pin (1). A round bore hole (5) and a protrusion unit (4) are interlocked at a lateral element (3) made of steel in a hidden manner. The groove at the steel pin is found under the protrusion unit at the lateral element, when the steel pin is inserted into the round bore hole at the lateral element under effect of force. A space within the groove at the steel pin is fillable with metal material under the protrusion unit that is interlocked at the lateral element, where filling occurs by press cut of the protrusion unit using a stamping press.