Relay

Abstract

The invention discloses a relay which comprises an insulation shell, an insulation bottom plate, a fuse, and a mounting seat. A containing cavity with one open end is limited in the insulation shell. The insulation shell is provided with two separated wiring columns. The insulation bottom plate is movably arranged in the containing cavity between a first position and a second position. One side of the insulation bottom plate facing the wiring columns is provided with two separated connection contacts. When the insulation bottom plate is at the first position, each of the connection contact presses against a wiring column. When the insulation bottom plate is at the second position, the connection contacts are separated from the wiring columns. The fuse is arranged between the two connection contacts, and two ends of the fuse are electrically connected to the two connection contacts. The mounting seat is provided with a movable push rod to push the insulation bottom plate to move between the first position and the second position. According to the relay of the embodiment of the invention, the overload protection of an external circuit can be achieved, the burning and damage of the electrical components of the external circuit are avoided, and the reliability and the security of the system are improved.

Description

technical field [0001] The present invention relates to the technical field of relays, and more specifically, to a relay. Background technique [0002] In the related art, the two connection contacts of the relay are electrically connected through a copper plate of a certain thickness. When the current in the external circuit is too large, since the relay has no overload protection function, the components of the load circuit are easily damaged, and the safety Furthermore, the relay in the related art has no arc extinguishing function, and the internal insulation is not good, and the low-voltage end components of the relay are prone to damage and breakdown, which greatly reduces the service life of the device. [0003] In addition, during the use of the relay in the related art, additional protection devices, such as a separate fuse device, need to be added to the peripheral circuit where the relay is located. The separately assembled fuse device not only increases the use o...

AI Technical Summary

Problems solved by technology

[0002] In the related art, the two connection contacts of the relay are electrically connected through a copper plate of a certain thickness. When the current in the external circuit is too large, since the relay has no overload protection function, the components of the load circuit are easily damaged, and the safety Furthermore, the relays in related technologies have no arc extinguishing function, and the internal insulation is not good. The low-voltage end components of the relay are prone to damage and breakdown, which greatly reduces the service life of the device.

[0003] In addition, during the use of the relay in the related art, additional protection devices, such as a separate fuse device, need to be added to the peripheral circuit where the relay is located. The separately assembled fuse device not only increases the use of electrical components in the circuit, but also requires Larger installation space

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