Limit Micro Switch

- Aug 01, 2018-

One type of travel micro switch, position micro switch (also known as limit micro switch), is a commonly used small current main electric appliance. The collision or control circuit is realized by the collision of the moving parts of the production machinery to make the contact action to achieve a certain control purpose. Typically, such micro switches are used to limit the position or travel of the mechanical motion, allowing the motion machine to automatically stop, reverse, shift, or automatically reciprocate at a certain position or stroke.

In an electrical control system, the position micro switch functions to achieve sequential control, position control, and position status detection. Used to control the travel and limit protection of mechanical equipment. Construction: consists of the operating head, the contact system and the housing.

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In actual production, the travel micro switch is installed in a pre-arranged position. When the module mounted on the moving part of the production machine hits the travel micro switch, the contact of the travel micro switch acts to realize the micro switching of the circuit. Therefore, the stroke micro switch is an electric appliance that micro switches the circuit according to the stroke position of the moving part, and its function is similar to that of the button.

The travel micro switch is widely used in all kinds of machine tools and lifting machinery to control its travel and limit the terminal. In the control circuit of the elevator, the travel micro switch is also used to control the speed of the micro switch car door, the limit of the automatic door opening and closing, and the upper and lower limit protection of the car.

The travel micro switch can be mounted on a relatively stationary object (such as a fixed frame, a door frame, etc., referred to as a still life) or a moving object (such as a car, a door, etc., referred to as an animal). When the animal approaches the still life, the contact of the micro switch's linkage drive micro switch causes the closed contact to break or the open contact to close. The operation of the circuit and mechanism is controlled by the change of the opening and closing state of the micro switch contacts