CN2702434Y

CN2702434Y - A high-current reverse controlled integrated relay

Info

Publication number: CN2702434Y
Application number: CN 200320100742
Authority: CN
Inventors: 刘硕毅; 章伟艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-04
Filing date: 2003-10-04
Publication date: 2005-05-25
Anticipated expiration: 2013-10-04

Abstract

The utility model discloses a high-current reverse controlled integrated relay, the structure of which is just like the picture one. The high-current reverse controlled integrated relay is provided with two oppositely independent magnetic paths and circuits, the sucking coils and the keeping coils of the positive and reverse controlled components (2) and (3) and a diode (4) are separately cooperated, an upper cap straight frame hole (81), an upper cap transversal frame hole (82) and an upper cap avoiding hole (83) can position each composite contact to opposite positions and make a super-range component freely move, and the super-range component can compensate the burning quantity of the contacts. The utility model uniformly acts on a moving contact (11) left and right through a spring acting on a left and a right pad spring post (91) and (92) and an installing hole (93) to uniformly disconnect and connect so as to realize the function of using a small coil power to positively and reversely control the high-current reverse.

Description

A kind of big electric current commutation control integrated relay

Technical field

The utility model relates to low-voltage, high-current commutation control relay, is applicable to that need such as electric winch, electri forklift, electric automobile control the place of forward and reverse big electric current with little electric current high efficiency.

Background technology

The existing relay overwhelming majority has only a control coil, by specific magnetic circuit, spring and armature effect, the work of drive contact, has only an action after energising or the outage, can only connect or the disjunction main circuit, but actual many power consumption equipments, as electric winch, electri forklift etc., not only need to connect or the branch deenergizing, but also need forward and reverse connection or divide deenergizing, so, realize just necessary two or more the relay associated working of use of positive revertive control, thereby make control section volume and cost increase many places wiring reliability and decrease in efficiency.

Simultaneously, when relay work began, opened apart from bigger the contact, the magnetomotive force that needs is big, and after the adhesive, air gap diminishes, the magnetomotive force that maintenance needs is little, and existing most relays control coil only, as long as voltage is constant, consumed power is just constant substantially, suction problems of too after the not enough and adhesive of beginning suction so occurs,, just must take all factors into consideration from designing in order to address this problem, will sacrifice volume, efficient etc. in case of necessity, as the relay of TianXing, Ningbo car electrics factory production.At this problem, the producer that has begins design and uses the twin coil control system, relay as the production of Nanhua, Zhejiang electrical apparatus factory, be that a coil is respectively used in adhesive and maintenance, adhesive back is well cut off pull-in winding by a mechanical structure, work on by hold-in winding, improved coil efficiency so greatly, but mechanical break-up device has increased cost and reduced reliability

Summary of the invention

The purpose of this utility model provides a kind of big electric current commutation control integrated relay, solve problems such as the not high and overall volume of above-mentioned high-current relay efficient and reliability is big, each contact and magnetic circuit with two high-current relays on the structure merge, realize positive and negative integration control function, raise the efficiency and reduce cost and reduce overall dimension.

Be to realize above-mentioned functions, the technical solution adopted in the utility model comprises following five big parts: the one, and the two control coil system that forms by the pull-in winding of automatic short-circuit after the adhesive and hold-in winding; The 2nd, be adopted as the composite contact that two pairs of normally-open normally-close contacts when realizing positive revertive control merge; The 3rd, adopt even disjunction of symmetrical spring power or make contact electric current; The 4th, the aluminum alloy casing and the high-temperature engineering plastics insulation technology of employing good heat dissipation; The 5th, adopt the spring travel mechanism.This five part combines with other parts, realizes the big electric current commutation of high efficiency controlled function.

Each parts of the utility model and electromagnetic performance are all through detailed calculated comparatively, can satisfy above-mentioned performance requirement, give each parts composite construction and multinomial function simultaneously, so the utility model parts are few, volume is little, in light weight, adopt new technology in a large number, new material, new method, cost is low, through advanced development and trial run, superior performance is reliable, and is economic and practical.

Description of drawings

Fig. 1 is the utility model circuit theory diagrams;

Fig. 2 is the utility model general assembly drawing;

Fig. 3 is the utility model loam cake part front view;

Fig. 4 is the utility model moving contact pad part front view;

Be labeled as among the figure: 1 positive and negative control switch; 2 forward controlling elements; 21 forward hold-in windings; 22 forward pull-in windings; 23 forward normally opened contacts; 24 forward normally-closed contacts; 3 reverse control assemblies; 31 reverse hold-in windings; 32 reverse pull-in windings; 33 reverse normally opened contacts; 34 reverse normally-closed contacts; 4 diodes; 5 electrical appliances; 6 bases; 7 magnetic circuits; 8 loam cakes; The straight frame of 81 loam cakes hole; The horizontal frame of 82 loam cakes hole; 83 loam cakes are dodged the hole; 9 moving contact pads; 91 left pad spring stacks; 92 right pad spring stacks; 93 moving contact installing holes; 10 compound fixed contacts; 11 moving contacts; 12 insulator caps; 13 excess of stroke springs; 14 jump rings; 15 fixed contacts; 16 contact pads.

Embodiment

The big electric current commutation of the utility model control integrated relay, its line principle as shown in Figure 1, when positive and negative control switch 1 closes with forward controlling elements 2, forward pull-in winding 22 and electrical appliance 5 same power connections, there is big electric current to pass through, forward normally opened contact 23 closures, forward hold-in winding 21 is responsible for remaining closed, simultaneously forward pull-in winding 22 is passed through by no current after the short circuit, big electric current through forward normally opened contact 23 to from top to bottom to electrical appliance 5 and oppositely normally-closed contact 34 circulations; When positive and negative control switch 1 closes with reverse control assembly 3, reverse pull-in winding 32 and electrical appliance 5 same power connections, there is big electric current to pass through, reverse normally opened contact 33 closures, oppositely hold-in winding 31 is responsible for remaining closed, oppositely pull-in winding 32 is passed through by no current after the short circuit simultaneously, and to electrical appliance 5 and 24 circulations of forward normally-closed contact, another direction coil no current passed through the reverse normally opened contact 33 of big electric current warp when diode 4 can be guaranteed a direction conducting to from bottom to top.Two hold-in winding electrical currents are less, and promptly power is little, so just realize reaching the commutation control electrical appliance sense of current with less electric current, greater efficiency.

This big electric current commutation control integrated relay, its structure chart has two relatively independent magnetic circuits and circuit as shown in Figure 2.Just, oppositely

control assembly

2 and 3 places in the cavity of 8 groups of aluminium alloy base 6 and loam cakes, magnetic circuit 7 can constitute flux circuit,

contact pad

9 and 16 and insulator cap 12 can guarantee that electric current flows and with uncorrelated insulation in specified circuit, excess of stroke spring 13 and jump ring 14 can overtravels and are compensated the pitting of contacts amount, stressed even about when left pad spring stack 91 and right pad spring stack 92 and moving contact installing hole 93 can be decided direction installation moving contact 11 and can guarantee moving contact disjunction normally opened contact with the joint normally-closed contact, the straight frame of loam cake hole 81 and the horizontal frame of loam cake hole 82 and loam cake are dodged hole 83 and can be located each contact relative position and allow excess of stroke parts move freely.When positive and negative control switch 1 closes with forward controlling elements 2, by closed magnetic circuit 7, moving contact 11 both moved in the allocation and the excess of stroke is partly moved at each, with forward normally opened contact 23 closures, disconnect forward normally-closed contact 24 simultaneously, with circuit a direction conducting, during outage, separately compress spring left pad spring stack 91 and right pad spring stack 92 stepless actions are made moving contact 11 steady breaking currents and the even normally closed angle point of conducting, vice versa.

The utility model overall dimension length * wide * height is 90mm * 88mm * 58mm, specified positive and negative breaking current 200A, short-term energising 400A, control coil power＜20W, mounting means can be erect and laterally install, through prototyping testing being shown each modular construction and technological design are reasonable, properties of product are reliable and stable.

Claims

1 one kinds big electric current commutation control integrated relays, it just comprises, reverse control assembly (2) and (3), aluminium alloy base (6) and loam cake (8), magnetic circuit (7), compound fixed contact (10), moving contact (11), fixed contact (15), contact pad (9) and (16), insulator cap (12), excess of stroke spring (13), jump ring (14), it is characterized in that: magnetic circuit and circuit that two relatively independent work of energy are arranged, two pairs of normally-open normally-close composite contact positions are by last cover frame and insulator cap relative fixed, the two pairs of pull-in windings and hold-in winding can the automatic short-circuit conversions, realize the big electric current commutation function of integrated control.

2 big electric current commutation control integrated relays as claimed in claim 1, it is characterized in that: forward hold-in winding (21), forward pull-in winding (22), oppositely hold-in winding (31), oppositely pull-in winding (32), diode (4) and magnetic circuit (7) constitute two magnetic circuits, can the automatic short-circuit shutoff after the pull-in winding adhesive and keep by hold-in winding.

3 big electric current commutation control integrated relays as claimed in claim 1, it is characterized in that: moving contact (11) is decided direction by moving contact installing hole (93) and is installed, and the disjunction normally opened contact and when engaging normally-closed contact by the even application of force about left pad spring stack (91) and right pad spring stack (92).

4 big electric current commutation control integrated relays as claimed in claim 1, it is characterized in that: the straight frame of loam cake hole (81) and the horizontal frame of loam cake hole (82) and loam cake are dodged hole (83) and can be located each contact relative position and allow excess of stroke parts move freely.