CN2266196Y

CN2266196Y - Pulse self-locking bistable electromagnetic relay

Info

Publication number: CN2266196Y
Application number: CN 95231979
Authority: CN
Inventors: 康兆春
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-14
Filing date: 1995-08-14
Publication date: 1997-10-29
Anticipated expiration: 2005-08-14

Abstract

The utility model relates to a pulse self-locking bistable electromagnetic relay, comprising a shell body, an excitation coil, an armature iron, an iron core, a yoke iron, a moving contact, a static contact and a mechanical locking mechanism which is composed of a stepping cam, a shift fork, a reset spring, a slide block, etc. The shift fork and the reset spring are arranged on the armature iron. The slide block is arranged on a moving spring. The utility model has the advantages of small size, light weight, large capacity, and reliable action.

Description

Pulse self-locking bistable electromagnetic relay

The utility model relates to a kind of pulse latching relay, is a kind of bistable electro magnetic relay that can start with pulse voltage, is applicable to various pulse automatic control systems.

The general electromagnetic relay that uses is made up of magnetizing coil, armature, elastic spring, sound contact etc., its weak point is, have only when switching on continuously to magnetizing coil could latching relay operating state, this not only increases energy consumption, and can make the magnetizing coil heating, and the operating time also can burn when long, must strengthen the number of turn of coil for this reason, the volume of relay is strengthened, increase cost, particularly can not be suitable for various pulse automatic control systems.

The purpose of this utility model is to provide a kind of volume bistable state pulse self-locking electromagnetic relay little, that pulse voltage can be moved.

Technical solution of the present utility model is: comprise the pulse self-locking electromagnetic relay of housing, magnetizing coil, armature, iron core, moving contact, fixed contact, it is characterized in that being provided with stepping cam-type mechanical lock mechanism, concrete structure is:

The coaxial stepping cam that is fixed into of a, stepping wheel and cam is installed in the housing by axle;

The fulcrum of b, armature is connected with yoke by hinge, and an end of armature is equipped with shift fork, the stepping wheel engagement on shift fork and the stepping cam, and the other end of armature is provided with back-moving spring;

C, movable contact spring are provided with moving contact and slide block, the cam-engaged on slide block and the stepping cam.

The course of work of the present utility model is: when magnetizing coil passes through an electric impulse signal, armature is downward by adhesive, shift fork is stirred angle of stepping cam rotation, at this moment cam jack-up slide block just in time, moving contact on the movable contact spring is upwards contacted with fixed contact, and circuit is switched on and keeps on-state.Because by the very fast end of electric impulse signal of magnetizing coil, magnetic force disappears, armature returns to original position under the effect of back-moving spring, and shift fork is got back to and waited for action next time in the next stepping tooth.When another pulse signal passed through magnetizing coil, an angle stirred the stepping cam again by shift fork, and at this moment, slide block just in time falls in the recess of cam under the effect of movable contact spring self elastic force, makes moving contact leave fixed contact, and circuit disconnects, and kept off-state.

The utility model has the advantages that: owing to adopt stepping cam-type mechanical self-latching mechanism, volume is little, and an electric impulse signal can be realized the relay on-off state exchange, is active in one's movements, reliably; Owing to realize mechanical self-latching, only when changing on off operating mode, pass through pulse signal, make coil be in no current state, both power savings do not have temperature rise again; Because coil does not have temperature rise, adopt the unicoil formula, volume is little, makes whole relay volume little, in light weight, and cost is low, and can be encapsulated in the closed shell, and is strong to working environment adaptability, is applicable to systems such as the automatic control of protection, measurement and various pulse.

Following accompanying drawing has been described embodiment of the present utility model.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the left view of stepping cam among Fig. 1;

Fig. 3 is a schematic diagram of the present utility model;

Fig. 4 is a winding diagram of the present utility model;

Fig. 5 is the utility model outline drawing;

Fig. 6 is the upward view of Fig. 5.

Below in conjunction with accompanying drawing the utility model is described in detail.Present embodiment is a JMQX-99F type highpowerpulse self-locking electromagnetic relay, and it is that each parts with relay are installed on the plastic skeleton, and overall package forms in a plastic casing, Fig. 5, Fig. 6 are its outline drawing, wherein 13 is housing, and 14 is the skeleton base, and 15 is the leg of stretching out.1 for the stepping cam among the figure, and it is 1b to be taken turns in stepping and cam 1a is coaxial fixedly forms, and it is the working of plastics of global formation in the present embodiment, is installed on the skeleton by axle.3 is that magnetizing coil, 6 is that iron core, 4 is that yoke, 7 is armature among the figure, constitutes magnetic loop by iron core, yoke, armature, and yoke 4 is fixed on the skeleton.The armature 7 of lever construction, its fulcrum and yoke are hinged by bearing pin, and the one end is provided with shift fork 2, and shift fork 2 and stepping wheel 1b engagement are used to drive stepping cam 1, and the other end is provided with and is used for the spring 5 that armature resets.8 is the movable contact springs that are fixed on the skeleton among the figure, and 9 are provided in a side of the slide block on the movable contact spring, slide block and cam 1a engagement, when reed is in when not being subjected to the external force active state, slide block just is in the indent of cam, and the moving contact 10 that is located on the movable contact spring separates with fixed contact 11, and circuit CD is separated; When movable contact spring during by cam jack-up, movable contact spring is bent upwards, and the contact of sound two contacts is switched between circuit CD; When stepping wheel drives cam more further the time, movable contact spring is by self spring return state that do not stress, and slide block falls into indent, and separate again sound two contacts.Like this, the utility model is its break-make of may command by pulse electrical signal, and has realized bi-stable function with unicoil.

For improving reliable in action of the present utility model, be provided with position-limit mechanism 12 on the top of armature 7, stroke when being used to limit armature and leaving iron core rise under action of reset spring can be returned on the next stepping wheel gear teeth shift fork 2 exactly, makes action accurate.Position-limit mechanism can be made of the set screw that is arranged on the skeleton, and it is the protrusion that is fixed on the skeleton in the present embodiment.

For improving the capacity and the useful life of relay, in the present embodiment, moving contact and fixed contact have adopted double-contact circuit structure in parallel, as shown in Figure 3, Figure 4.Wherein d1, d2 are the terminals of two fixed contacts, and c1, c2 are the terminals of two moving contacts, and A, B are the terminals of magnetizing coil.Above-mentioned 6 terminals are drawn 6 corresponding leg 15 outside housing.The resistive load of present embodiment is 40A, 220V, and be more than 10,000 times useful life, and overall dimension is 64 * 35 * 38 (mm).

Claims

1, self-locking bistable electromagnetic relay in a kind of arteries and veins comprises housing, magnetizing coil (3), armature (7), iron core (6), moving contact (10) and fixed contact (11), it is characterized in that also being provided with stepping cam-type mechanical lock mechanism, and its structure is:

A, stepping wheel (1b) and the coaxial stepping cam (1) that is fixed into of cam (1a) are installed on the plastic skeleton in the housing by axle;

B, constitute magnetic loop by armature (7), yoke (4) and iron core (6), yoke (4) is fixed on the skeleton, the armature of lever construction (7), its fulcrum is connected with yoke (4) by hinge, one end of armature is equipped with shift fork (2), shift fork (2) is taken turns (1b) engagement with the stepping on the stepping cam, and the other end of armature is provided with back-moving spring (5);

C, the movable contact spring (8) that is fixed on the skeleton are provided with moving contact (10) and slide block (9), cam (1a) engagement on slide block (9) and the stepping cam (1).

2, pulse self-locking bistable electromagnetic relay according to claim 1 is characterized in that armature top is provided with by being arranged at the set screw on the skeleton or being fixed on the position-limit mechanism that the protrusion on the skeleton constitutes.