Lower-back Supporting Apparatus, Backrest Supporting Frame and Seating Unit
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Apr 25, 2024
app pub date -
May 12, 2023
filing date -
May 12, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
Provided in the present invention are a lower-back supporting apparatus, a backrest supporting frame, and a seating unit. The lower-back supporting apparatus includes a lower-back supporting plate; a lower mounting plate; two supporting structures, provided between the lower-back supporting plate and the lower mounting plate, hinged to the lower-back supporting plate and the lower mounting plate, respectively; and an extendable and retractable part, including an extendable and retractable end hinged to the lower-back supporting plate or the supporting structure, so as to drive the lower-back supporting plate away or close to the lower mounting plate. In the present invention, the lower-back supporting plate may be lifted and lowered by cooperating the extendable and retractable part with the supporting structure; the volume of lower-back supporting apparatus may be effectively reduced by adopting the extendable and retractable part; the whole of the extendable and retractable part is easy to maintain and replace.
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