Electromechanical extending device of movable sofa

Abstract

Disclosed is an electromechanical extending device of a movable sofa, which is suitable for a movable sofa, especially for an electric rocking chair or swinging chair. The electromechanical extending device of a movable sofa comprises a mechanical extending device and an electric device, wherein the electric device consists of a motor, a motor front connection tube, a motor rear connection tube, a motor head installation piece, a motor movement sliding block, a sliding block installation piece, a rotating connection piece, and a rotating bended piece, the motor front connection tube is connected with a leg connection piece, the motor head installation piece is connected with the motor front connection tube, the motor head installation piece is connected with the motor in a rotating manner, the motor movement sliding block is installed on a guide rail of the motor, the sliding block installation piece is fixed on the motor rear connection tube, the sliding block installation piece is connected with the motor movement sliding block in a rotating manner, the motor rear connection tube is connected with the rotating bended piece, the rotating bended piece is connected with a rising connection piece in a rotating manner, the rotating connection piece is connected with the rotating bended piece in a rotating manner, and the rotating connection piece is connected with an installation board in a rotating manner. The device has a simple structure, a safe and reliable drive, a high efficiency, a low cost and a good level of comfort.

1 . An electromechanical extending device of a movable sofa, comprising a mechanical extending device and an electric device, wherein the mechanical extending device has the same left side part and right side part which are connected via a fixing part in a fixing manner, wherein the electric device consists of a motor, a motor front connection tube, a motor rear connection tube, a motor head installation piece, a motor movement sliding block, a sliding block installation piece, a rotating connection piece, and a rotating bended piece, the motor is a guide rail motor, the motor front connection tube is fixed on a leg connection piece of the mechanical extending device, the motor head installation piece is fixed on the motor front connection tube, the motor head installation piece is connected with the motor via a fourth axis of rotation in a rotating manner, the motor movement sliding block is installed on the guide rail of the motor, the sliding block installation piece is fixed on the motor rear connection tube, the sliding block installation piece is connected with the motor movement sliding block via a fifth axis of rotation in a rotating manner, the motor rear connection tube is fixed on the rotating bended piece, the rotating bended piece is connected with a rising connection piece of the mechanical extending device via a third axis of rotation in a rotating manner, the rotating connection piece is connected with the rotating bended piece via a second axis of rotation in a rotating manner, and the rotating connection piece is connected with an installation board on the mechanical extending device in a rotating manner. 
     
     
         2 . The electromechanical extending device of the movable sofa according to  claim 1 , wherein both the left side part and the right side part are provided with a leg connection piece, a rising connection piece, an installation board, a foot pedal, a first foot rod, a second foot rod, a small foot pedal, a rolling groove connection piece, a backrest piece, a rolling wheel, a third foot rod, a front connection piece, a wheel controlling connection piece, a wheel connection piece, a rear pin connection piece, a leg connection piece, a rising connection piece, a seat board, and a leg driving connection piece, the foot pedal, the small foot pedal, and the leg connection piece are connected with the first foot rod and the second foot rod in a rotating manner respectively, the third foot rod is connected with the second foot rod, the leg driving connection piece, and the seat board in a rotating manner, the seat board is connected with the rising connection piece and the backrest piece in a rotating manner, the backrest piece is connected with the rising connection piece, the rear pin connection piece, and the rolling groove connection piece in a rotating manner, the rising connection piece is connected with the front connection piece in a rotating manner, the rear pin connection piece is connected with the installation board and the wheel connection piece in a rotating manner, the wheel controlling connection piece is connected with the wheel connection piece and the installation board in a rotating manner, the leg driving connection piece is connected with the rear pin connection piece via the rolling wheel in a rotating manner, the rolling wheel moves in the groove of the rolling groove connection piece, the installation board is fixed on a base of the movable sofa, the second foot rod is provided with a first limiter, and the seat board is provided with a second limiter and a third limiter. 
     
     
         3 . The electromechanical extending device of the movable sofa according to  claim 1 , wherein the motor head installation piece inclines downward of the motor, the fourth axis of rotation on the motor head installation piece is lower than the motor front connection tube, the guide rail of the motor is installed on the motor rear connection tube, and the motor movement sliding block is positioned above the motor rear connection tube. 
     
     
         4 . The electromechanical extending device of the movable sofa according to  claim 1 , wherein both the fourth axis of rotation and the fifth axis of rotation are bolts.