CN201017827Y

CN201017827Y - Three phase magnetic holding relay

Info

Publication number: CN201017827Y
Application number: CNU2007200049333U
Authority: CN
Inventors: 汪卫华; 许允居
Original assignee: WENZHOU GELEITE ELECTRIC CO Ltd
Current assignee: Zhejiang Grtrelay Electrical Appliances Co., Ltd.
Priority date: 2007-02-16
Filing date: 2007-02-16
Publication date: 2008-02-06
Anticipated expiration: 2017-02-16

Abstract

The utility model discloses a three-phase magnetic latching relay. The utility model comprises a base seat, an upper cover, a contacting system, a magnetic path system and a pushing mechanism, the contacting system is a double-contact bridge type structure, three contact groups are distributed in the base seat in parallel, each contact group is respectively comprised of a moving spring, two moving contacts, two static contacts, two static connecting terminals and a common connecting terminal, the static contacts, the common connecting terminals and the grounding terminals of the three contact groups are arranged on a plane in parallel, the terminals are respectively deduced out of the base seat from the both sides of the relay, and seven terminals are arranged on each side. During the using, the relay is not required to be arranged in the meter casing of the three-phase electric meter, the relay is directly connected with the connecting terminals of the electric meter, after the connection, the relay and the three-phase electric meter are integrated into a whole body, and the disadvantage that the three-phase magnetic latching relay is installed inside the meter casing is overcome.

Description

The three-phase magnetic latching relay

Technical field

The utility model relates to a kind of relay, exactly is a kind of three-phase magnetic latching relay.

Background technology

The three-phase magnetic latching relay is mainly for the supporting use of three phase watt-hour meter, existing three-phase magnetic latching relay all is an independently relay basically, the client is when supporting use, also need external various annexes, and relay must be placed fully in the middle of the watchcase of three phase watt-hour meter, not only complex structure, cost are higher, and can not well be dispelled the heat in watchcase during relay work, make whole three-phase kilowatt-hour meter internal temperature rise higher, badly influence the quality and the dependability of kilowatt-hour meter.

The utility model content

At the deficiency that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of three-phase magnetic latching relay that can directly be connected with the three phase watt-hour meter terminals.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of three-phase magnetic latching relay, comprise pedestal, loam cake, contact system, magnetic circuit system and pushing mechanism, described contact system is the double-contact bridge architecture, be distributed in the pedestal side by side by three contact sets, each contact sets is made up of a movable contact spring, two moving contacts, two fixed contacts, two quiet terminals and common terminal respectively again, quiet terminals, common terminal and the earth terminal of three contact sets are side by side in one plane, stretch out pedestal from the both sides of relay respectively, seven terminations of every side.

Described magnetic circuit system is the solenoid type electromagnet structure, comprises coil, yoke and two iron cores, and one of them iron core is moving iron core, and another is a static iron core, and respectively there is a magnet steel head both sides of coil, and two magnet steel polarity are placed in opposite directions.

Described pushing mechanism connects magnetic circuit system and contact system, form by catch bar, shell fragment and spring, one end of catch bar is connected with the moving iron core of magnetic circuit system, offer the through hole that connects about three on its shaft, the movable contact spring of contact system is installed in the through hole by spring respectively, its moving contact is respectively in the both sides of catch bar, and shell fragment is arranged on the back of movable contact spring.

Operation principle of the present utility model is: when the coil electricity of magnetic circuit system, moving iron core just moves in coil, and the catch bar that passes through pushing mechanism drives shell fragment and moving contact motion, closed or the disconnection with fixed contact, thereby realize the purpose of control external circuit, spring can make the moving contact of bridge architecture have certain elasticity, with the reliability of guaranteeing to contact.This relay need not place in the watchcase of three phase watt-hour meter in use, but directly is connected with the terminals of kilowatt-hour meter, connect the back and becomes as a whole with three phase watt-hour meter, has overcome the drawback that the three-phase magnetic latching relay is installed in watchcase inside.

Description of drawings

Fig. 1 is a general structure schematic diagram of the present utility model;

Fig. 2 is contact system and a terminals arrangement schematic diagram in the utility model;

Fig. 3 is a magnetic circuit system structural representation in the utility model;

Fig. 4 is a pushing mechanism structural representation in the utility model;

Fig. 5 is the vertical view of Fig. 4.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

Reference numeral is as follows:

1---pedestal 2---loam cake

3---contact system 4---magnetic circuit system

5---pushing mechanism 6---movable contact spring

The quiet terminals of 7---moving contacts 8---

9---fixed contact 10---common terminal

11---earth terminal 12---coil

13---yoke 14---iron core

15---magnet 16---catch bar

17---shell fragment 18---spring

As shown in Figure 1, this three-phase magnetic latching relay mainly is made up of pedestal 1, loam cake 2, contact system 3, magnetic circuit system 4 and pushing mechanism 5, and pedestal 1 plays the effect of fixing other parts, 2 protective actions of loam cake.

As shown in Figure 2, contact system is the double-contact bridge architecture, be distributed in side by side in the pedestal 1 by three contact sets, each contact sets is made up of a movable contact spring 6, two moving contacts 7, two quiet terminals 8, two fixed contacts 9 and common terminal 10 respectively again, six quiet terminals 8, common terminal 10 and earth terminals 11 are side by side in one plane, stretch out pedestal 1 from the both sides of relay respectively, every side is totally 7 terminals, can directly be connected with the terminals of three phase watt-hour meter.

As shown in Figure 3, (one of them is moving iron core to magnetic circuit system by coil 12, yoke 13 and two iron cores 14, another is a static iron core) form, and a magnet steel 15 is respectively arranged in the head both sides of coil, two magnet steel polarity are placed in opposite directions, static magnetic maintenance performance down is provided, and is engaged in when coil 12 applies opposite polarity signal and makes the direction of motion of iron core opposite.

As Fig. 4, shown in Figure 5, pushing mechanism is by catch bar 16, shell fragment 17 and spring 18 are formed, one end of catch bar 16 is connected with the moving iron core of magnetic circuit system, offer the through hole that connects about three on its shaft, the movable contact spring 6 of contact system is installed in the through hole by spring respectively, its moving contact 7 is respectively in the both sides of catch bar 16, form the elasticity bridge architecture, shell fragment 17 is arranged on the back of movable contact spring 6, and when relay coil 12 energisings, moving iron core moves in coil, drive catch bar 16 actions, catch bar drives movable contact spring 6 and moving contact 7 actions again, with fixed contact 9 closed or disconnections, thus the purpose of realization control external circuit break-make.

The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but on its shape or structure, do any variation; every have identical with a utility model or akin technical scheme, all within its protection range.

Claims

1. three-phase magnetic latching relay, it is characterized in that, comprise pedestal, loam cake, contact system, magnetic circuit system and pushing mechanism, described contact system is the double-contact bridge architecture, be distributed in the pedestal side by side by three contact sets, each contact sets is made up of a movable contact spring, two moving contacts, two fixed contacts, two quiet terminals and common terminal respectively again, quiet terminals, common terminal and the earth terminal of three contact sets are side by side in one plane, stretch out pedestal from the both sides of relay respectively, seven terminations of every side.

2. three-phase magnetic latching relay according to claim 1, it is characterized in that, described magnetic circuit system is the solenoid type electromagnet structure, comprise coil, yoke and two iron cores, one of them iron core is moving iron core, another is a static iron core, and respectively there is a magnet steel head both sides of coil, and two magnet steel polarity are placed in opposite directions.

3. three-phase magnetic latching relay according to claim 1, it is characterized in that, described pushing mechanism connects magnetic circuit system and contact system, form by catch bar, shell fragment and spring, one end of catch bar is connected with the moving iron core of magnetic circuit system, offers the through hole that connects about three on its shaft, and the movable contact spring of contact system is installed in the through hole by spring respectively, its moving contact is respectively in the both sides of catch bar, and shell fragment is arranged on the back of movable contact spring.