Patent ID: 9386858
Filing Date: 2016-07-12
CPC Classification: A47C

Claim Text:
1. A structure-improved multifunction chassis, comprising a chassis base, a handle, and a plurality of pull lines, wherein: the chassis base comprises a backrest angle adjustment device, a cushion height adjustment device, and a cushion back-and-forth moving device, the chassis base is pivoted with a left and right connecting rod of a seat backrest frame; the handle comprises a shift arm, a handle fixing block, and a handle base; the handle fixing block is installed in the handle base and is swingable up and down, the handle fixing block is mounted on the handle base by bolts; a plurality of pull line positioning grooves are formed on one end of the handle base and comprise a first pull line positioning groove, a second pull line positioning groove, and a third pull line positioning groove; the shift arm is installed in the handle fixing block and is swingable from side to side; the pull lines comprise a first pull line located in the first pull line positioning groove, a second pull line located in the second pull line positioning groove, and a third pull line located in the third pull line positioning groove, the shift arm and the backrest angle adjustment device are linked by the first pull line; the shift arm and the cushion height adjustment device are linked by the second pull line; the shift arm and the cushion back-and-forth moving device are linked by the third pull line; where the backrest angle adjustment device comprises a back fixing strip and a backward pull line fixing block, the back fixing strip defines a first slot, the backward pull line fixing block defines a second slot, the first pull line passes through the first slot and the second slot.