Worm wheel of steering system speed reducer, and manufacturing method therefor
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United States of America Patent
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Oct 1, 2024
Grant Date -
Oct 13, 2022
app pub date -
Sep 2, 2020
filing date -
Sep 3, 2019
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present embodiments relate to a worm wheel of a steering system speed reducer, and provide a worm wheel of a steering system speed reducer, and a manufacturing method therefor, the worm wheel comprising: an external toothed part having a ring shape, external gear teeth provided on the outer peripheral side thereof, insertion grooves provided on the inner peripheral side thereof, and coupling holes provided on the upper surface and/or the lower surface thereof; an internal toothed part, which has a ring shape, is inserted into the external toothed part, has insertion protrusions provided on the outer peripheral side thereof, and has coupling protrusions provided at locations corresponding to the coupling holes; a hub to which a steering shaft is coupled; and a boss part provided between the outer peripheral side of the hub and the inner peripheral side of the external toothed part.
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