Centrifugal switch structure of single phase induction motor

Abstract

A centrifugal switch structure of a single-phase induction motor, the above-mentioned single-phase induction motor includes: a movable slider arranged along the axial direction of the rotation shaft of the single-phase induction motor, the slider is formed by a collar with a diameter larger than the rotation shaft A centrifugal switch structure that is in contact with the collar of the slider and implements the opening and closing action. The centrifugal switch structure includes: a first leaf spring switch that is installed inside the housing and opens and closes the main coil and the auxiliary coil; the hinge is connected to the housing On the top, one end protrudes out of the shell and contacts the collar of the slider, the other end is fixed inside the shell and elastically supports the first leaf spring switch, and can rotate with the pressurized state of the collar; it is set on the movable rod On the movable rod, it is used to insert and fix the first leaf spring switch and make the first leaf spring switch open and close with the rotation of the movable rod, so that the opening and closing action of the first leaf spring switch can be performed quickly and prevent Damage that occurs when contacts are melted.

Description

technical field [0001] The invention belongs to the technical field of electric motors, in particular about the centrifugal switch structure of a single-phase induction motor. More in detail, the action rod is restored to its original state by the spring force and increases the restoring force by increasing the force in the direction in which the original state of the leaf spring switch is restored. Therefore, A centrifugal switch structure of a single-phase induction motor that prevents damage to the centrifugal switch caused by welding between the contacts due to heat generation by adding a fixed pin to the operating rod to fix the leaf spring switch. Background technique [0002] Generally speaking, a motor is a device that converts electrical energy into mechanical energy. It is divided into DC motors or AC motors according to the power supply used. AC motors also have induction motors, synchronous motors, and commutator motors. Single phase induction motor. [0003] Si...

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Problems solved by technology

[0012] However, in the centrifugal switch of the single-phase induction motor constituted by the conventional structure as described above, the force applied to the first leaf spring switch 65 and the second leaf spring switch 67 by the rotation of the movable rod 62 is released, and the main coil terminal 66 and the auxiliary coil When the terminal 68 changes from the closed circuit state to the open circuit state, the self-elastic force of the first leaf spring switch 65 and the second leaf spring switch 67 switches from the closed circuit state to the open circuit state, so the terminal part of the first leaf spring switch 65 is connected to the auxiliary coil terminal 68. The state of the closed circuit is caused by the heat generated between the contacts and the momentary melting between the first leaf switch 65 and the auxiliary coil terminal 68. The main coil terminal 66 and the auxiliary coil terminal 68 can also be quickly switched from the closed circuit state to the open state. The problem of damage point

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