Toggle switches, also known as toggle switches, lever switches, are the most commonly used manual switches and are widely used in electronic instruments, meters and electrical equipment. Toggle switch is a kind of manual control switch, mainly used for on-off control of AC and DC power circuits, and generally can also be used in circuits of several kilohertz or up to 1 MHz.

 

1. Type

There are two operating positions, two positions and three positions. The three-position switch can also have one side position not positioned, etc. At the same time, there are many types of connection circuits. Toggle switch has a wide variety of button handles, such as metal cone button handles, plastic cone button handles, fluorescent button handles, plastic sleeve button handles, spherical button handles, flat lever button handles, lock lever button handles, wave button handles, paddle buttons Handle etc. The lock lever type knob handle is suitable for dangerous operation occasions. There is also a “lift and unlock” button handle with a spring added to it and a milled groove at the end of the solenoid. The operator must first lift the button handle and then push it to another position to ensure safe work.

Second, the principle of action

When the toggle switch is manually operated, the switch action principle can be divided into two stages.

1. The first stage of the operating principle of the toggle switch

Pull the trigger to the middle with your hand until the trigger is in the vertical position. At this time, the pointed top of the single-pole slider gradually moves closer to the middle, until the middle position, and the compression spring is further compressed.

2. The second stage of the operating principle of the toggle switch

After the trigger passes the vertical position, the single-pole slider moves quickly in the other direction under the pressure of the compression spring, and drives the trigger to turn quickly. At this time, the moving contact piece is quickly separated from the fixed contact foot on one side and is quickly separated from the fixed contact foot on the other side. The contact foot is quickly connected. At this time, the separation speed of the contact is related to factors such as the pressure of the compression spring and the friction between the moving parts, and the speed is very high. According to the test, the time from the disconnection of the contact to the reconnection is only about milliseconds, and the average speed is up to milliseconds. This speed is many times faster than manual pull speed or motor test pull speed.

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