Relay

Abstract

The invention discloses a relay. An elastic pulling rod and a rigidity pulling rod which have a certain gap are arranged on an armature driven by a reversible magnetic field side by side, the two pulling rods are simultaneously inserted in pushing rods to pull the pushing rods, and a reed is driven by the pushing rods to control connection and disconnection of a movable contact and a fixed contact. When the contacts are connected, the elastic pulling rod supports the pushing rods to support the reed through the pushing rods, and contact pressure between the contacts is provided by deformation of the elastic pulling; and when the contacts are disconnected, the rigidity pulling rod supports the pushing rods to instantly pull the pushing rods, and the reed is driven by the pushing rods to rapidly disconnect the movable contact and the fixed contact and achieve instant disconnection of the contacts. The elastic pulling rod of the relay is not contacted with the reed directly, short adaptability deformation is avoided, anti-bounding performance is good, the pulling rods are directly arranged on the armature, and the anti-bounding performance is stable.

Description

technical field [0001] The invention relates to a relay, in particular to a drive structure for switching on and off the movable contact of the relay. Background technique [0002] When the relay is switched to the closed position, the moving contact and the static contact will bounce back due to mechanical collision. In order to reduce the rebound of the reed when switching to the closed position, it is necessary to apply additional pressure to the reed when the relay is closed, so as to increase the contact pressure between the moving and static contacts of the relay. Existing relays such as figure 1 , by installing an additional shrapnel on the free end of the reed, when the relay is closed, the push rod driven by the armature does not directly press the reed, but indirectly presses the reed by pressing the shrapnel on the reed to close the dynamic and static contacts. The deformation of the shrapnel provides additional dynamic and static contact contact pressure. [0...

AI Technical Summary

Problems solved by technology

[0003] However, in the above-mentioned existing relay structure, the connecting mode of the elastic piece and the reed is usually riveting, such as figure 2 , which directly contacts the reed through the spring. When the reed rebounds, the part of the spring that is close to the reed may undergo short-term adaptive deformation, and the anti-rebound performance is still not ideal.

In addition, after repeated opening and closing for many times, the gap between the riveting joints may increase and looseness may occur, which reduces the contact pressure of the dynamic and static contacts and deteriorates the anti-rebound performance.

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