Liquid Discharge Head Arm Valve Mechanism

The arm acts as an intermediary component between the actuator and the valve. The actuator drives the arm, which in turn moves the valve. This intermediary mechanism allows the valve to move quickly in response to actuator displacement while the arm's swing motion and clearance design prevent direct collision between the actuator and valve, resolving the contradiction between speed and reliability.

The arm introduces a rotational degree of freedom (swing motion) that transforms the linear displacement of the actuator into rotational movement of the valve. This dimensional transformation allows the valve to achieve rapid opening and closing through the swing motion while maintaining clearance between the arm and valve surfaces, preventing collision during high-speed operation.

The arm serves multiple functions simultaneously: it transmits the actuator's displacement to move the valve, provides the swing motion for precise valve positioning, and acts as a structural support element. By making the arm multi-functional, the patent achieves precise valve control without adding separate components for each function, thereby limiting the increase in device complexity.

The arm combines the functions of motion transmission, positioning, and structural support into a single component. Instead of having separate mechanisms for each function, the arm integrates these roles, achieving precise valve control while minimizing the number of parts and overall device complexity.