| 摘要 |
This invention relates to a spectacle frame having metal or plastic bows, which can be forced open beyond their normal open position to bear resiliently on the head of the wearer. Each bow is connected to the rim of the spectacle frame by a hinge, which includes a bow-side part and a rim-side part. The hinge includes a spring mechanism, which at least in a plastic bow can be almost entirely or entirely accommodated. The hinge should be adapted to be used with metal bows in such a manner that only flat portions of the hinge protrude on the inside of the bow so that the bow will be flat and free from protruding hinge portions on the inside, which faces the face of the wearer. To accomplish these objects, the hinge includes a slidable plate, which is provided on the outside of the end portion of the bow and which is in spring-biased engagement with the rim of the spectacle frame when the bow is in its normal open position whereas the slidable plate is arranged to be urged back against spring force when the bow is forced open beyond its normal open position. |
