Mechanical linkage structure for linking chair and seat, frame and chair having the mechanical linkage structure
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United States of America Patent
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Nov 24, 2020
Grant Date -
N/A
app pub date -
Apr 30, 2019
filing date -
May 25, 2018
priority date (Note) -
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Abstract
A mechanical linkage structure for linking a chair and a seat, comprises a first link, a second link, and a third link respectively used as a driven link, a fourth link used as a driving link, a fifth link, a sixth link, and a seventh link respectively used as a driven link. The first link is pivotally connected to the second link and the third link, respectively; the second link is pivotally connected to the fourth link and the fifth link, respectively; the third link is pivotally connected to the fourth link, the fifth link, and the seventh link, respectively; the fifth link is pivotally connected to the sixth link; the sixth link is pivotally connected to the seventh link; the fourth link is driven to rotate the first link, the second link, the third link, the fifth link, the sixth link and the seventh link, to realize the unfolding or collapse of the mechanical linkage structure.
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Family
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