| 摘要 |
A retractable eyeware retaining strap assembly consisting of a strap and a hollow eyewear temple for containing the strap, a strap retaining block to which the strap is attached positioned within the temple and arranged to slide along the temple, an elastic. member such as an extendable spring connected between the block and the eyewear end of the temple and fastening means attached to the strap at the temple end for fastening the withdrawn strap to the eyewear. A block locking device is provided to secure the block at a desired position along the temple, particularly at one end or the other. The strap is withdrawn by releasing the block at the eyewear end of the temple and retracted by releasing the block at the temple end.
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