Sofa backrest adjusting apparatus with integrated headrest and lumbar cushion
US11478083B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2021 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Aug 31, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C17/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present application relates to a sofa backrest adjusting apparatus with integrated headrest and lumbar cushion, which comprises a frame body arranged in a sofa cover, wherein a support rod is arranged in the middle of the frame body, a bearing support frame is arranged on the support rod, and a headrest driving mechanism and a lumbar cushion driving mechanism are arranged on the bearing support frame; the headrest driving mechanism comprises a first power module and a first transmission lead screw, the lumbar cushion driving mechanism comprises a second power module and a second transmission lead screw. According to the present application, when the first transmission lead screw and the second transmission lead screw are broken, only the second transmission lead screw needs to be replaced, so that the maintenance cost of the electric sofa can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.