CN202996728U

CN202996728U - Soft contact structure of contact of relay

Info

Publication number: CN202996728U
Application number: CN 201220598367
Authority: CN
Inventors: 杨继红; 程铭
Original assignee: Shanghai Yayin Electrical Appliance Manufacturing Co Ltd
Current assignee: Shanghai Yayin Electrical Appliance Manufacturing Co Ltd
Priority date: 2012-11-14
Filing date: 2012-11-14
Publication date: 2013-06-12
Anticipated expiration: 2022-11-14

Abstract

The utility model relates to a soft contact structure of a contact of a relay, which comprises a movable spring combination, a push rod and a magnetic steel combination, wherein the movable spring combination comprises a plurality of movable springs comprising at least one movable spring bended towards one side; the push rod is connected to the movable spring combination; the magnetic steel combination is connected to the push rod; under a working state, the magnetic steel combination rotates to drive the push rod to move; and the push rod pushes the movable spring bended towards one side, so that the movable spring is in the pressed straightened state, therefore, one movable contact on the movable spring combination is tightly contacted with a fixed contact of the relay. According to the utility model, the over-travel of the relay is effectively increased; and the reliability of the relay is increased.

Description

The soft contact structures of relay contact

Technical field

The utility model relates to a kind of electric control device, particularly the soft contact structures in a kind of contact of relay.

Background technology

Relay is the automatic switch element with isolation features, is widely used in remote control, remote measurement, communication, control automatically, electromechanical integration and power electronic equipment, and be one of most important control element.An important indicator weighing its quality is its overtravel, overtravel refers to switch and moves from gate-dividing state to the combined floodgate direction, when contact has contacted fully, switch is not to stop immediately, but continue to the certain distance of combined floodgate direction motion, switch touches fully from contact and stops the overtravel that this segment distance is exactly switch, and the effect of overtravel is to guarantee that switch still can make contact reliably contact after deciliter several times.

In existing relay, move at the reed of outer end, contact too shortly, too hard, the overtravel of relay is more difficult accomplishes: 1) after continuous deciliter of dynamic/static contact, contact has wearing and tearing; 2) bringing onto load deciliter after, contact has scaling loss; 3) have electrodynamic repulsion force after the energising of up and down contact, must have touch spring to guarantee contact pressure.If the overtravel of relay is inadequate, two contacts of relay may be separated from through high temperature under closure state again.

The utility model content

The utility model provides a kind of relay contact soft contact structures for the prior art above shortcomings, has effectively improved the overtravel of relay, has increased the reliability of relay.

The utility model is achieved through the following technical solutions:

The soft contact structures of a kind of relay contact comprise:

Moving spring combination comprises some moving springs, and some moving springs comprise at least one moving spring to curving;

Catch bar connects moving spring combination;

The magnet steel combination connects catch bar;

In working order, the rotation of magnet steel combination drives catch bar and moves, and catch bar promotes to make it be in the straightening state to the moving spring of curving, so that the fixed contact of moving contact close contact one relay in moving spring combination.

Description of drawings

Fig. 1 is the structural representation of this existing relay contact structure;

Fig. 2 is the moving spring combination schematic diagram of this existing relay contact structure;

Fig. 3 is the overall structure schematic diagram of the soft contact structures of a kind of relay contact of the utility model;

Fig. 4 is the moving spring combining structure schematic diagram of the soft contact structures of a kind of relay contact of the utility model.

Embodiment

Below in conjunction with embodiment, the utility model is elaborated, the present embodiment is implemented under take technical solutions of the utility model as prerequisite, has provided detailed execution mode, but protection range of the present utility model is not limited to following embodiment.

Please refer to Fig. 1, be existing relay contact structure, comprise magnet steel combination 1, pushing piece 2, moving spring combination 3, please refer to Fig. 2, the reed 21 of its outer end, contact is too short, too hard, pushing piece needs very large power just can make the contact point contact good, therefore, the overtravel of relay is more difficult accomplishes, after repeatedly using, the contact contact of relay can produce bad, therefore the reliability of relay is affected.

please refer to Fig. 3 and Fig. 4, the soft contact structures of a kind of relay contact that the utility model provides, comprise: moving spring combination 3, magnet steel combination 1, catch bar 2, wherein moving spring comprises at least one moving spring 23 to curving, because the reed bending has certain gradient, utilize the thrust of magnet steel that it is up pushed away just than being easier to, the rotation of namely magnet steel combination, the drive catch bar moves, catch bar promotes to make it be in the straightening state to the moving spring of curving, so that the fixed contact of the moving contact 22 close contact relays in moving spring combination, effectively increased the overtravel of relay by this structure, make relay reliability better.

Above disclosed be only the application's a specific embodiment, but the application is not limited thereto, the changes that any person skilled in the art can think of all should drop in the application's protection range.

Claims

1. the soft contact structures of relay contact, is characterized in that, comprising:

Moving spring combination comprises some moving springs, and described some moving springs comprise at least one moving spring to curving;

Catch bar connects described moving spring combination;

The magnet steel combination connects described catch bar;

In working order, the rotation of described magnet steel combination drives described catch bar and moves, and described catch bar promotes described moving spring to curving makes it be in the straightening state, so that the fixed contact of moving contact close contact one relay in described moving spring combination.