Relay contact structure capable of reducing dithering

Abstract

The invention discloses a relay contact structure capable of reducing dithering. The relay contact structure comprises a movable contact piece, a movable contact point, a fixed contact piece and a fixed contact point, and is characterized by being provided with one or more permanent magnets which are fixed on the back of the movable contact point or a place in rigid connection with the movable contact piece, and one or more permanent magnets which are fixed on the back of the fixed contact point or a place in rigid connection with the fixed contact piece. Because the relay contact structure is connected with one or a group of the permanent magnets with opposite polarities, when an electromagnetic system of a relay makes the contact points of a contact be in contact with or separate from each other, the dithering is effectively damped, and the relay contact structure can be used for manufacturing various relays with less dithering, high efficiency, low cost and small volume.

Description

technical field [0001] The invention belongs to the field of electromechanical technology, in particular to the improvement of the relay contact structure in the field of control electric appliances. Specifically, it is a relay contact structure that can reduce jitter, so that there is little jitter when the contacts are attracted and disconnected. Background technique [0002] The electromagnetic relay contact includes a fixed contact piece, a fixed contact fixed on the fixed contact piece, a moving contact piece, and a moving contact fixed on the moving contact piece. The traditional electromagnetic relay contacts will vibrate when they are closed and disconnected, so they cannot be used in occasions that require small jitter. The current main measure to reduce the jitter when the contacts are engaged and disconnected is to change the mechanical parameters and the material of the contact spring system. For example, for the contact spring system with a rigid static contact...

AI Technical Summary

Problems solved by technology

The traditional electromagnetic relay contacts will vibrate when they are closed and disconnected, so they cannot be used in occasions that require small jitter

The current main measure to reduce the jitter when the contacts are pulled in and off is to change the mechanical parameters and the material of the contact spring system. For example, for the contact spring system with a rigid static contact spring, increase the contact pressure, or choose Moving contact spring materials with low material density, large elastic modulus and large vibration attenuation coefficient, or reducing the length and width of the moving contact reed, increasing the thickness, etc. to improve vibration resistance, and rarely adopted in the contact structure of the relay Measures to improve vibration resistance to reduce jitter, resulting in limited vibration damping effect

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