| 摘要 |
A pair of multi-purpose eyeglasses has a main frame ( 10 ) and an inner frame ( 20 ). The main frame ( 10 ) includes a lens holder for holding lenses and a pair of temple arms ( 14 ) foldably connected to both ends of the lens holder. The main frame has a pair of side assembling grooves formed on opposite edge portion of a rear surface of the lens holder. Each of the side assembling grooves ( 16 ) extending in a vertical direction and having an open upper and a closed lower end. The inner frame is detachably assembled with a rear surface of the lens holder and has a pair of side assembling protrusions ( 22 ) which are inserted in and engaged with the side assembling grooves when the inner frame is assembled with the main frame.
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