US Patent 7251865 Button

The present invention provides a button including a button body 10 and a fixture 40 for fixing the button body to fabric. The button body 10 includes a shell member 11 constituting a button outer shell and an accommodation member 31. The shell member 11 includes a button cover 22 and a neck 14 formed cylindrically on the back side of the button cover 22 and having an opening 17 at an outer edge thereof. The accommodation member 31 has a shaft 33 accommodated in the neck with a portion thereof protruding from the opening, and an insert hole 34 formed on the protruding end face of the shaft for the fixture to be inserted therein. Crimping parts 18 are formed on one of the inner periphery of the opening or on the outer peripheral surface of the shaft at specified positions with a prespecified space therebetween along the circumferential direction so as to crimp into the other.