| 摘要 |
Swimming goggles include a frame unit, lenses assembled on the frame unit, and a strap unit. The strap unit comprises a head strap with two free ends, and buckles for securing and adjusting the head strap. Each buckle includes a base and a control portion. The base has a first reception portion defining a first slot, and a second reception portion defining a second slot. The control portion is provided between the first reception portion and the second reception portion, and includes at least a biasing arm neighboring the first slot or the second slot. The biasing arm includes a biasing portion for abutting against the head strap, and an operating portion. When the operating portions are operated to release the biasing portion, the head strap is allowed to be adjusted. Therefore the length of the head strap can be adjusted conveniently.
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