Electromagnetic relay with self-resetting indication function

Abstract

The invention relates to the technical field of relays, and particularly relates to an electromagnetic relay with a self-resetting indication function. The electromagnetic relay comprises a shell, a base, an indication plate arranged on the base, a push rod, a contact system and a magnetic circuit system which are matched with each other. The indication board is located between the contact system and the side wall of the shell. At least one fixing piece fixed to the base is arranged at the bottom of the indication board, an elastic piece making contact with the shell is arranged on the side, away from the contact system, of the indication board, after the relay is powered on, the push rod and the indication board act but are not connected, the push rod pushes the indication board to achieve indication switching, and automatic assembling is achieved by independently assembling the indication board. When the relay is powered on, the indication board rotates under the action of the push rod to generate an elastic force, and the elastic piece abuts against the shell to generate a buffer elastic force so that after the relay is powered off, the indication board can reset slowly, the shaking amplitude is prevented from being too large, the stability of action voltage parameters is guaranteed, and the qualified rate of finished products is improved.

Description

technical field [0001] The invention relates to the technical field of electromagnetic relays, in particular to an electromagnetic relay with a self-resetting indication function. Background technique [0002] Electromagnetic relay is a switching device that indirectly controls high-voltage and high-current circuits by using the on-off of low-voltage and weak-current circuits. The function of the indicator board is to facilitate the debugging personnel to observe whether the logo of the indicator board is exposed through the window on the top of the relay housing to judge whether the contacts of the moving reed and the normally open static reed are connected. The window will be exposed on the top of the indicator board after closing. If the contact of the normally closed static reed of the relay is adhered to the moving reed, the indicator board will not be exposed after the closing. In this way, it is easy to determine whether there is any abnormality in the action of the e...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the indicator board is often assembled with the pushing parts such as the push rod before it can be loaded into the base, but the indicator board cannot be independently and automatically assembled, resulting in low assembly efficiency and quality, which cannot meet the assembly requirements of the relay. When the action is reset, it is also necessary to push the parts to drive it, resulting in a large shaking of the indicator board, resulting in poor absorption of the action voltage of the relay, affecting the stability of the action voltage parameters, and thus affecting the qualified rate of finished products

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