Articulated full-automatic rotary clamping holder

An articulated full-automatic rotary clamping holder, comprising a rear base, a bottom support arm, a left holding arm and a right holding arm, the bottom support arm, the left holding arm and the right holding arm being mounted to the rear base;

• the rear base being fixedly connected with a return elastic member extending vertically for returning the bottom support arm upward, one end of the return elastic member being fixed to the rear base, another end of the return elastic member being connected to the bottom support arm;
• the bottom support arm being provided with left and right rotation fulcrums corresponding to the left holding arm and the right holding arm, the left holding arm and the right holding arm being formed with link points connected with the bottom support arm and driven by the bottom support arm, the left holding arm and the right holding arm having holding portions extending beyond the rear base;
• the left and right rotation fulcrums being located between the corresponding holding portions and the link points;
• wherein when the bottom support arm is moved downward, the bottom support arm drives the holding portions to rotate inward to form an automatic clamping;
• wherein when the bottom support arm is returned upward, the bottom support arm drives the holding portions to rotate outward to form an automatic release.