| 摘要 |
Closing and opening device for metal glasses orbits, composed of a key with a T-shaped head inserted in the first bush and held under pressure by a compression spring located between the key base and the first bush lower side; pressing the key base by means of a screwdriver, the T-shaped head is allowed to pass through the second bush through slot, and position itself in the groove present on the surface by means of a subsequent 90 DEG rotation, after removing the pressure exerted by the screwdriver. The two bushes are kept together thanks to the compression exerted by the spring and will allow to close the orbit and therefore fasten the lens, thanks to their position connected with the orbit opening sides. |
