Armrest device for adjusting inclination angle of backrest

An armrest device for adjusting an inclination angle of a backrest, comprising:

• a side connecting bracket, and
• an armrest;
• wherein a right end of the side connecting bracket and a right end of the armrest are rotatably connected with the backrest;
• an upper end of the side connecting bracket is fixedly connected with a positioning seat;
• an upper end of the positioning seat extends to an inner cavity of the armrest;
• the positioning seat shifts the inclination angle of the backrest and limits a position of the backrest through a positioning mechanism disposed in the inner cavity of the armrest;
• a first spring limiting a movement of the armrest in an X direction and a second spring limiting a movement of the armrest in a Z direction are disposed between the positioning seat and the armrest;
• one end of the first spring is connected with the positioning seat through a first connecting structure;
• another end of the first spring is connected with the armrest through a second connecting structure;
• one end of the second spring is connected with the positioning seat through a third connecting structure;
• another end of the second spring is connected with the armrest through a fourth connecting structure.