Plastic Big Wheel Silver Contacts Elevator Electrical Limit Travel Switch

Plastic Big Wheel Silver Contacts Elevator Electrical Limit Travel Switch

The plastic wheel adjustable arm self-reset structure in the travel switch limiter is a common design. The following is its related introduction:
Structural features
Plastic wheel: usually made of high-strength, wear-resistant plastic material. The design of the large wheel can increase the contact area with the moving parts, make the force more uniform, and also reduce the wear on the moving parts. In addition, the plastic material has good insulation performance and light weight, which helps to reduce the cost and installation difficulty of the entire limiter.
Adjustable arm: The arm is generally connected to the main body of the limiter by a shaft or a pin, and can be rotated within a certain angle range. The length and angle of the arm are usually adjustable to adapt to different installation positions and travel requirements of moving parts. By adjusting the length and angle of the arm, the trigger position of the limiter can be accurately set to improve the accuracy of the limit control.
Self-reset function: The self-reset structure is an important feature of the travel switch limiter. When the moving part touches the plastic wheel and the arm rotates a certain angle, the arm can automatically return to its initial position after the moving part leaves the wheel. This function is usually achieved by a built-in spring or elastic element. The spring stores energy when the arm is rotated. When the external force disappears, the spring releases the energy and drives the arm back to its original position, ready for the next trigger.