Small-sized electromagnetic relay applicable to intelligent socket

Abstract

The invention discloses a small-sized electromagnetic relay applicable to an intelligent socket. The small-sized electromagnetic relay comprises a body, and a magnetic circuit part and at least two groups of contact parts which are arranged on the body, wherein the magnetic circuit part comprises a coil, a yoke and an armature; all the groups of contact parts comprise dynamic springs and static springs; the dynamic springs and the static springs are matched; first bent parts are respectively arranged on the dynamic springs and the static springs. By arrangement of the first bent parts, the flat plate design of the conventional static springs and dynamic springs is changed, so that on the basis of not increasing the manufacturing cost and the assembling difficulty, aims that the relay enlarges a current carrying area of a reed under a finite volume and improves the current carrying capacity of the reed are fulfilled; according to the quantity of the contact parts, at least two groups offirst bent parts are designed, so that the relay disclosed by the invention can switch on and switch off a zero line and a live wire; the safety of the intelligent socket is improved; mounting requirements of the socket for a high load and a small size are met.

Description

technical field [0001] The invention relates to an electromagnetic relay, in particular to a small electromagnetic relay suitable for an intelligent socket. Background technique [0002] In recent years, foreign countries have issued regulations one after another. For smart home products such as smart sockets and smart switches connected to the grid, they must have the function of disconnecting the zero and live wires at the same time. At this stage, smart sockets all adopt the scheme of two relays, which not only takes up a lot of space, but also costs a lot, and there is also a large difference in synchronization time. Because the smart socket has clear requirements for the load current (generally not less than 16A), the current status of the two sets of relays on the market is that the current that can meet the small volume installation is too small, and the current that can meet the requirements is large and the price is relatively high. Therefore, there is an urgent ne...

AI Technical Summary

Problems solved by technology

For the existing small relays with two sets of switches, the reeds (that is, the moving spring and the static spring) have weak current-carrying capacity (generally, the current is 10A and below), and cannot carry the heat brought by the large current, otherwise it is easy to cause early failure and catch fire

The existing medium and large relays with two sets of switches have strong current-carrying capacity of the reeds, but they are bulky (generally with a height of more than 20mm), which cannot meet the small-volume installation requirements of smart sockets.

[0004] In the traditional relay design, the reed mostly adopts a flat structure, and due to the overall space limitation, the current carrying capacity of the reed cannot be further improved

Although, many products have been improved in design details, such as double contacts or reed bifurcations, and high-conductivity materials to increase contact reliability and current carrying capacity, although these methods are more or less It helps to solve the problem, but at the same time, it also sacrifices the manufacturing cost and increases the difficulty of assembly

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