Abstract: Disclosed are a device for the opening of an adjustable sofa without pausing and a mechanical stretching device thereof. The device for the opening of an adjustable sofa consists of a leg drive connector (4), a first limit push connector (3), an expansion front swing limit (1), a second limit push connector (10), a back swing limit (6), a transmission connector (9), a third limit push connector (8), a limit push slide groove block (7) and a folding front swing limit (11). The leg drive connector (4) is rotatably connected to the first limit push connector (3). The transmission connector (9) is rotatably connected to the second limit push connector (10). The second limit push connector (10) is rotatably connected to the first limit push connector (3) and the third limit push connector (8). The back swing limit (6) is fixed on the third limit push connector (8) and located in a limit push slide groove (15). The expansion front swing limit (1) is fixed on the second limit push connector (10).

Abstract: A mechanical stretching device for automatically folding a movable sofa leg includes a mechanical stretching device, a switching device, and an automatic folding device. The switching device includes a handle ring (1), a handle shank (3), a handle support (6) and a handle spring (5). The automatic folding device includes an automatic rotating part (8), a rotating tube (21), a spring hanging piece (17), folding spring (10). The handle ring (1) is rotatably connected to the handle shank (3). Handle shank (3) is rotatably connected to the handle support (6). The handle support (6) is fixed on the base frame mounting plate (20). The rotating tube (21) is rotatably connected to the base frame mounting plate (20). The automatic rotating part (8) is fixed on the rotating tube (21). The spring hanging piece (17) is rotatably connected to the automatic rotating part (8).

Abstract: The invention is an electromechanical stretching apparatus of a convertible sofa, which consisting of a mechanical stretching apparatus and an electric actuator, the mechanical stretching apparatus being provided with an electrically-driven connecting rod, wherein, the electric actuator consists of a motor, a motor connecting tube, a motor movable slider, and a motor head fixing part, the motor adopted is a motor with a guide rail, the motor movable slider is installed on the guide rail of the motor, the motor head is rotationally connected through a second rotor shaft to the motor head fixing part fastened on the electrically-driven connecting rod, the motor connecting tube is connected to the motor movable slider through a first rotor shaft and the motor connecting tube is fastened on the mechanical stretching apparatus. The said motor connecting tube is fastened on a linkage part of the mechanical stretching apparatus. The said first rotor shaft and the second rotor shaft are both a bolt.

Abstract: The present invention relates to a processing method for a vacuum container and a vacuum container, characterized in that, the processing method for a vacuum container comprising a step of welding a sealing fin, wherein welding a sealing fin onto an inner wall of an outer container, and leaving an empennage for welding at the bottom of the outer container; and a step of welding an outer bottom cap, wherein welding an outer bottom cap seamlessly on the empennage by means of argon arc welding.

Abstract: The present invention relates to a processing method for a vacuum container and a vacuum container, characterized in that, the processing method for a vacuum container comprising a step of welding a sealing fin, wherein welding a sealing fin onto an inner wall of an outer container, and leaving an empennage for welding at the bottom of the outer container; and a step of welding an outer bottom cap, wherein welding an outer bottom cap seamlessly on the empennage by means of argon arc welding.

Abstract: Disclosed are a device for the opening of an adjustable sofa without pausing and a mechanical stretching device thereof. The device for the opening of an adjustable sofa consists of a leg drive connector (4), a first limit push connector (3), an expansion front swing limit (1), a second limit push connector (10), a back swing limit (6), a transmission connector (9), a third limit push connector (8), a limit push slide groove block (7) and a folding front swing limit (11). The leg drive connector (4) is rotatably connected to the first limit push connector (3). The transmission connector (9) is rotatably connected to the second limit push connector (10). The second limit push connector (10) is rotatably connected to the first limit push connector (3) and the third limit push connector (8). The back swing limit (6) is fixed on the third limit push connector (8) and located in a limit push slide groove (15). The expansion front swing limit (1) is fixed on the second limit push connector (10).

Abstract: The invention is directed to a movable backrest of an adjustable chair, which can include: a backrest assembly, a first backrest support, a first backrest connector, a second backrest support, a second backrest connector, and a backrest guiding apparatus; the backrest assembly is connected to the first backrest support through a first shaft, the backrest assembly is connected to the guiding apparatus through a seventh shaft, the first backrest support is connected to the first backrest connector through a second shaft, the backrest guiding apparatus is connected to the first backrest connector through a sixth shaft. The invention is simple, durable, and easy to operate, can help eliminate a gap between the backrest and the sitting pad when the adjustable chair is at different positions, reduce the friction feeling of a person's back and prevent the backrest from touching the well when the adjustable chair is at different positions.

Abstract: The invention is refer with an electromechanical stretching apparatus of a convertible sofa, which consisting of a mechanical stretching apparatus and an electric actuator, the mechanical stretching apparatus being provided with an electrically-driven connecting rod, wherein, the electric actuator consists of a motor, a motor connecting tube, a motor movable slider, and a motor head fixing part, the motor adopted is a motor with a guide rail, the motor movable slider is installed on the guide rail of the motor, the motor head is rotationally connected through a second rotor shaft to the motor head fixing part fastened on the electrically-driven connecting rod, the motor connecting tube is connected to the motor movable slider through a first rotor shaft and the motor connecting tube is fastened on the mechanical stretching apparatus. The said motor connecting tube is fastened on a linkage part of the mechanical stretching apparatus. The said first rotor shaft and the second rotor shaft are both a bolt.

Abstract: The invention is directed to a movable backrest of an adjustable chair, which can include: a backrest assembly, a first backrest support, a first backrest connector, a second backrest support, a second backrest connector, and a backrest guiding apparatus; the backrest assembly is connected to the first backrest support through a first shaft, the backrest assembly is connected to the guiding apparatus through a seventh shaft, the first backrest support is connected to the first backrest connector through a second shaft, the backrest guiding apparatus is connected to the first backrest connector through a sixth shaft. The invention is simple, durable, and easy to operate, can help eliminate a gap between the backrest and the sitting pad when the adjustable chair is at different positions, reduce the friction feeling of a person's back and prevent the backrest from touching the well when the adjustable chair is at different positions.