Dual-insulation electromagnetic relay

Abstract

The invention discloses a dual-insulation electromagnetic relay. The electromagnetic relay comprises a base, a magnetic circuit part and a contact part, wherein the contact part comprises a movable spring part and a static spring part, the magnetic circuit part comprises a yoke, an armature, an enameled wire and a coil rack, the coil rack is vertical, the yoke is provided with a vertical first edge matched with the outer side of the coil rack, the armature is matched with a knife edge of the first edge of the yoke, and a reset reed for resetting the armature is matched with the first edge of the yoke; the movable spring part is connected with the armature through an insulating part; the solid insulation distance between the contact part and the magnetic circuit part is greater than or equal to 2.0 mm; a first structure is arranged on the bottom face of the head of the coil frame, a second structure is arranged on the top face of the tail of the coil frame, and the first structure and the second structure are of a concave structure or a convex structure respectively and located between the enameled wire and the first edge of the yoke. According to the invention, a double-insulationeffect is achieved between the contact system and the magnetic circuit system, and the reinforced insulation requirement of IEC61810-1 / IEC60335-1 can be met.

Description

technical field [0001] The invention relates to the field of relays, in particular to a double-insulated electromagnetic relay. Background technique [0002] Electromagnetic relay is an automatic switching element with isolation function. It is widely used in home appliances, remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment. It is one of the most important control elements. In the control circuit It plays the role of automatic adjustment, safety protection, conversion circuit, etc. [0003] In an electromagnetic relay in the prior art, the moving spring part and the armature are connected together through a plastic part, and the moving spring part is isolated from the armature by using the insulating part. However, the size cannot be miniaturized by only relying on the plastic part between the moving spring part and the armature for insulation. In order to increase the creepage distance between the yoke and the coil, ...

AI Technical Summary

Problems solved by technology

However, the size cannot be miniaturized by only relying on the plastic part between the moving spring part and the armature for insulation

In order to increase the creepage distance between the yoke and the coil, the electromagnetic relay of the prior art usually adds an insulating sheet on the coil frame, but this not only increases the assembly process of the insulating sheet, but also increases the cost of the insulating sheet

Moreover, it still cannot meet the standard requirements of IEC61810-1:2015 on the distance of solid insulation

Images