Helmet with gear-constraint transformable chin guard structure
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United States of America Patent
Stats
-
Jul 11, 2023
Grant Date -
Sep 9, 2021
app pub date -
May 25, 2021
filing date -
Mar 4, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A helmet with a gear-constraint type transformable chin guard structure may include a shell body, a chin guard and two branches on the chin guard, wherein a supporting base, the branch, an inner gear, an outer gear and a drive member form an associated mechanism, the inner gear and the outer gear are rotatable about fixed axes and constitute a meshing constraint pair, the inner gear and the branch are in sliding fit with each other and constitute a sliding constraint pair, and the drive member transfer the motion of the outer gear to the branch and causes the chin guard to make an extension/retraction displacement relative to the shell body, such that the chin guard makes an turnover motion while also recombining a reciprocating motion, thereby realizing a transformation between a full-helmet position and a semi-helmet position.
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Family
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Cited Art Landscape
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