| 摘要 |
The latch system can fix the face shield in several positions of the autobicycle helmet so that it can protect the face against the wind blown in various directions. It comprises a stepped tap having a middle opening part; a rim having upwardly formed teeth in the circumference; teeth extended radially and outwardly from the corner of the stepped tap; a lift spring having a rise assembled with a groove formed between the extended teeth; meshing teeth assembled with a groove formed between the teeth in the face shield rim.
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