Motor-driving mechanism and motor-driven furniture

A motor-driving mechanism comprising:

• a motor;
• and
• a lifting lever rotatable between a lifted position and a lowered position, the lifting lever comprising a first section and a second section, the first section pivotably connected to the motor, the second section connected to the first section in such a way that the first section and the second section as a whole are drivable by the motor to rotate in a first direction from the lowered position toward the lifted position, and the first section is drivable by the motor to rotate relative to the second section in a second direction from the lowered position toward a third position while the second section remains at the lowered position, the second direction being opposite to the first direction;
• wherein the first section and the second section form a locking mechanism which prevents rotation of the first section in the first direction relative to the second section while permitting rotation of the first section in the second direction relative to the second section;
• wherein the locking mechanism of the first section and the second section comprises a first engaging portion formed on the first section adjacent a joint between the first section and the second section and a second engaging portion formed on the second section adjacent the joint, and the first and second engaging portions cooperatively prevent rotation of the first section in the first direction relative to the second section by abutting against each other;
• and
• wherein the first engaging portion comprises a first protrusion, the second engaging portion comprises a second protrusion, and the first protrusion and the second protrusion prevent rotation of the first section in the first direction relative to the second section by abutting against each other.

A motor-driving mechanism comprising:

• a motor;
• and
• a lifting lever rotatable between a lifted position and a lowered position, the lifting lever comprising a first section and a second section, the first section pivotably connected to the motor, the second section connected to the first section in such a way that the first section and the second section as a whole are drivable by the motor to rotate in a first direction from the lowered position toward the lifted position, and the first section is drivable by the motor to rotate relative to the second section in a second direction from the lowered position toward a third position while the second section remains at the lowered position, the second direction being opposite to the first direction;
• wherein the first section and the second section form a locking mechanism which prevents rotation of the first section in the first direction relative to the second section while permitting rotation of the first section in the second direction relative to the second section;
• wherein the locking mechanism of the first section and the second section comprises a first engaging portion formed on the first section adjacent a joint between the first section and the second section and a second engaging portion formed on the second section adjacent the joint, and the first and second engaging portions cooperatively prevent rotation of the first section in the first direction relative to the second section by abutting against each other;
• and
• wherein the first engaging portion comprises a protrusion, the second engaging portion comprises a recess, and the protrusion is engaged in the recess to prevent rotation of the first section in the first direction relative to the second section.