To provide spectacles to which a front attachment can stably be attached on a front frame and which have a simple structure and can easily be manufactured at low cost as for the spectacles such that the front attachment is detachably fitted to and taken off from the front frame.
A fitting pin 12 having a groove 14 formed is projected in the center of a bridging member 10 of the front attachment 2, and positioning pins 13 and 13 are provided on both sides of the fitting pin 12. A fitting hole and a positioning hole are formed in a bridging member 4 of the front frame 1 to fit a fitting pin 12 in the fitting hole and a positioning pin 13 in the positioning hole, and a ball 15 projecting partially from an inner circumferential surface of the fitting hole is fitted in the groove 14 of the fitting pin 12 by an applied spring force.
WO/2019/161988 | SPECTACLES AND USE OF SPECTACLES HAVING A SPECTACLE FRAME AND AN ADDITIONAL FRAME |
WO/2022/089859 | AN EYEGLASSES FRAME AND EYEGLASSES |
JP5071907 | glasses |