一种轮椅座椅位姿调节机构

Wheelchair seat position and posture adjusting mechanism

Abstract

The invention discloses a wheelchair seat position and posture adjusting mechanism. The wheelchair seat position and posture adjusting mechanism is characterized by mainly comprising a cross four-rod mechanism a seat lifting mechanism, a seat manually-leveling mechanism, a seat electrically-leveling mechanism, a seat locking mechanism and a control system. The cross four-rod mechanism mainly comprises a right cross rod, a left cross rod, a left sliding block, a right sliding block, a left screw shaft and a right screw shaft. The seat lifting mechanism mainly comprises a seat manually-adjusting lifting mechanism and an electrically-adjusting lifting mechanism. The seat manually-leveling mechanism mainly comprises a leveling handle, a left upper wheel gear, a right upper wheel gear, a left middle wheel gear, a middle shaft, an upper tie bar, a right middle wheel gear, an upper sector gear, a small shaft, a left lower wheel gear and a right lower wheel gear and a long shaft. The electrically-leveling mechanism mainly comprises a leveling motor, a left spur wheel gear, a right spur wheel gear, a short shaft, a lower sector gear, a lower tie bar, a left spur wheel gear, a lower shaft and a right lower spur wheel gear. The seat locking mechanism mainly comprises a cam, a spring ball, a lower sliding block, a left upper spur wheel gear and a right upper spur wheel gear.
本发明公开一种轮椅座椅位姿调节机构,其特征在于该调节机构包括交叉四杆机构、座椅升降机构、手动座椅调平机构、电动座椅调平机构、座椅锁紧机构及控制系统;所述交叉四杆机构主要由右交叉杆、左交叉杆、左滑块、右滑块、左丝杆轴和右丝杆轴组成;座椅升降机构包括手动和电动调节座椅升降机构;手动座椅调平机构主要由调平手柄、左上齿轮、右上齿轮、左中齿轮、中轴、上系杆、右中齿轮、上扇形齿轮、小轴、左下齿轮、右下齿轮和长轴组成;电动座椅调平机构主要由调平电机、左直齿轮、右直齿轮、短轴、下扇形齿轮、下系杆、左下直齿轮、下轴和右下直齿轮组成;座椅锁紧机构主要由凸轮、弹簧球、下滑块、左上直齿轮和右上直齿轮组成。

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