Patent 7712196 was granted and assigned to YKK on May, 2010 by the United States Patent and Trademark Office.
A belt lock includes a plug (20) and an attachment (30) to be detachably attached to the plug (20). The attachment (30) includes a belt attaching hole (32). The plug (20) is provided with a rail (26). The attachment (30) is provided with a groove (31) to be slidably engaged with the rail (26). The rail (26) is provided with a lock section (a recess) (27). The groove (31) is provided with a to-be-locked section (a protrusion) (34) to be engaged with the lock section (the recess) (27).