Sofa

The utility model relates to a sofa. The base support on be equipped with welding pieces a, welding pieces an on be fixed with the motor, the power output shaft of motor is the screw rod, the cushion cap support on be equipped with welding pieces b, the last thread bush that is fixed with of welding pieces b, the thread bush in twist there is the screw rod, cushion cap support frame stand on on the base support to the cushion cap support passes through slide rail looks bridging with contact department of base support, and the motionless end of slide rail is fixed in on the cushion cap support, the utility model discloses an automatic activity on the sofa horizontal position can be realized to one set of automatic telescoping device that motor, thread bush, screw rod three constitute, provides the best comfortable position of sitting for the user, adopt cushion cap support, both separation of sofa skeleton, dismantle, in the equipment more convenience, easily carry moreover. 本实用新型涉及种沙发。所述的底座支架上设有焊接片a，所述的焊接片a上固