| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure which allows the prior adjustment of a jerking characteristic before mounting temples to wraparound endpieces and allows the easy fine adjustment of the jerking characteristic. SOLUTION: The constitution, in which the base end side of the temple 11L and the front end side of the wraparound endpiece 8 are connected via an approximately columnar connector 12, friction resistance is obtain between the peripheral surface of the connector 12 and the connector mounting part 22 on the base end side of the temple 11L, and the connector 12 and the front end side of the wraparound endpiece 8 are fixed, is adopted. This constitution makes it possible to execute the adjustment of the friction resistance generated between the connector 12 and the connector mounting part 22 of the temple 11L before mounting of the temple 11L to the wraparound endpiece 8. The friction resistance may be obtained from a wide section covering the entire circumference of the peripheral surface when the temple 11L is turned relative to the wraparound endpiece 8 by energizing so that the connector mounting part 22 of the temple 11L fastens the peripheral surface of the connector 12 fixed to the inserting part 20 of the wraparound endpiece 8.
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