CN2131201Y

CN2131201Y - Time relay

Info

Publication number: CN2131201Y
Application number: CN 92216813
Authority: CN
Inventors: 汪斌; 任瑞昌
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-19
Filing date: 1992-08-19
Publication date: 1993-04-28
Anticipated expiration: 2002-08-19

Abstract

The utility model relates to a time relay, which can finish the automatic time-delay control in an electromechanical device. The time relay comprises a power supply circuit, a time-delay control circuit and a controlled relay. The time relay overcomes the defect that a peripheral circuit supplies an electromagnetic relay with follow current and maintains the operating state of the electromagnetic relay in the prior art. The time relay adopts the permanent-magnetism guard relay whose peripheral circuit is composed of resistances, capacitances and diodes elements whose cost is low and motion is reliable. The utility model has the advantages of low energy consumption, long service life and simple manufacture technology. The time relay can normally work under 220V or 380V alternating current power supplies.

Description

Time relay

The utility model relates to the overrun control of electromechanical equipment automatic control system, particularly be applicable to the time relay under the forceful electric power occasion.

The prior art time relay, its motion device all adopts electromagnetic relay, JJSB type electronic time relay as the production of Shenyang 213 factories, adopt power transformer that alternating voltage (220V or 380V) is reduced, provide direct voltage through current rectifying and wave filtering circuit, conversion to the time-delay control integrated circuit, time-delay finishes back generation trigger current makes the electromagnetic relay action, finishes time-delay control.At this moment, delay control circuit need provide a continuous current to electromagnetic relay, keep its operating state this moment, until cutting away power supply, electromagnetic relay resets because of losing continuous current, so this time relay element power consumption is big, again because power transformer is a heater members, the heat that produces of working long hours makes the decreasing insulating between its enamelled wire, cause serious consequences such as short circuit or puncture easily, in order to cancel power transformer, the harmful effect of avoiding it to cause, increase the service life, the time relay that works under the 220V AC power that Japan produces is transferred to electromagnetic relay with design focal point, with enamelled wire coiling electromagnetic relay coil very thin below the circle φ 0.03mm up to ten thousand, its manufacturing process is extremely complicated, exchange the time relay under the occasion to working in 380V under this scheme, then need with thinner, the more enamelled wire coiling of number of turn electromagnetic relay coil, therefore the producer that possesses general fabrication process condition can't produce, and this time relay exists the shortcoming that needs a continuous current to keep the electromagnetic relay operate condition equally, so this relay and imperfect.

Goal of the invention of the present utility model is to provide a kind of and need not to provide continuous current to keep actuating of relay state, and manufacture craft is simple, is widely used in the time relay under the AC power such as 220V or 380V.

The utility model time relay, by power circuit, delay control circuit and formed by controlled relay, power circuit provides a direct current voltage with the AC power rectification to delay control circuit, make its control relay action, of the present utility modelly be characterised in that by controlled relay be the permanent magnetism latching relay, by current coil, magnetic conduction heel piece and armature constitute, the vertical bar permanent magnet of a polarity is fixed by the U type yoke base plate central authorities that two side arms is wound with a current coil respectively, at its top hinge-coupled one armature, the armature one end moving contact that is fixedly connected, finish switch motion with armature and fixed contact, two current coils insert the delay trigger circuit that constitutes delay control circuit respectively and trigger reset circuit, delay trigger circuit and the timesharing of triggering reset circuit provide a trigger impulse electric current to two linear flow coils, the magnetic flux and the permanent magnet magnetic flux acting in conjunction armature that produce in the coil, moving contact is finished delay control circuit with armature movement.

Fig. 1 is the structured flowchart of the utility model embodiment.

Fig. 2 is circuit theory diagrams of the present utility model.

The utility model time relay, form by power circuit, delay control circuit with by controlled relay, power circuit is converted to dc low-voltage with alternating current halfwave rectifier, voltage stabilizing, supply with delay control circuit, control the controlled actuating of relay, it is characterized in that by controlled relay be the permanent magnetism latching relay, by current coil L ₁, L ₂, magnetic conduction heel piece 1 and armature 3 forms, U type magnetic conduction heel piece 1 two side arms is wound with hundreds of circles respectively, coil L ₁, L ₂The vertical bar permanent magnet 2 of a polarity is pasted by its base plate central authorities, the upper end is the N/S utmost point, the lower end is the S/N utmost point, permanent magnet 2 top hinge-coupled one armature 3, the armature 3 one ends moving contact that is fixedly connected, be intensifier coil magnetic flux and permanent magnet magnetic flux vector and density, the vibration that produces when reducing armature 3 effect magnet 2 simultaneously, one magnetic conduction sheet 4 is set between permanent magnet 2 and armature 3, magnetic conduction heel piece 1 base plate both sides central authorities are provided with the boss seam, permanent magnet 2, magnetic conduction sheet 4, hinge 5 two ends are placed through on its both sides support body in 6 pilot holes of offering 7 together with the boss seam, finish constructional device.Current coil L ₁, L ₂Insert the delay trigger circuit that constitutes delay control circuit respectively and trigger reset circuit.

In this enforcement, the peripheral circuit of permanent magnetism latching relay comprises power circuit and delay control circuit, and wherein power circuit is by half-wave rectifying circuit (D ₁, C ₁) and voltage stabilizing circuit (D ₅) constitute, delay control circuit is connected to the voltage stabilizing circuit two ends.

Delay control circuit is made of delay trigger circuit and triggering reset circuit, and delay trigger circuit is rc-delay circuit RW, C ₂Be parallel to capacitor C ₂The unidirectional controllable silicon S CR at two ends ₁With coil L ₁The triggering series arm constitute, adjustable resistance RW is used for control lag time, unidirectional controllable silicon S CR ₁The control utmost point and anode between through voltage-stabiliser tube D ₄Connect; Trigger reset circuit by capacitance-resistance discharge loop R ₃, C ₃, C ₁Be parallel to electric capacity R ₃, resistance R ₃The switching tube at two ends and coil L ₂The triggering series arm constitute capacitor C wherein ₃The appearance value much smaller than capacitor C ₁The appearance value, switching tube is selected unidirectional controllable silicon S CR for use ₂, blocking diode D ₃Be connected to capacitor C ₃With resistance R ₃Contact H and unidirectional controllable silicon S CR ₂The control utmost point between, contact H and rectifier diode D ₁Be connected to one tunnel halfwave rectifier branch road D between the negative electrode in the same way ₂, for keeping capacitor C ₃That is filled makes diode D ₃Be in the voltage of blocking state, at rectification branch road D ₁Last series connection one resistance R ₂

Course of action of the present utility model:, energized, 220V or 380V AC power are through halfwave rectifier, voltage stabilizing, and low dc voltage is exported at voltage stabilizing circuit A, B two ends, supply with the delay trigger circuit of forming delay control circuit and trigger reset circuit, capacitor C in two circuit ₂, C ₃Charging is through capacitance-resistance RW, C ₂The time of delay that is provided with, make voltage-stabiliser tube D ₄Anode voltage reach controllable silicon SCR ₁Threshold voltage, controllable silicon SCR ₁Triggering and conducting, capacitor C ₂Discharge the pulse current flowing through coil L of generation rapidly along this conducting branch road ₁, this transient current is at coil L ₁In produce magnetic field and permanent magnet 2 magnetic field in the same way or oppositely, adhesive or repulsion armature 3, armature 3 is around hinge 5 rotations, and is tied with coil L ₁Yoke 1 one side arm top gap-closing or reliefs, drive moving contact, reach the delayed startup purpose, capacitor C ₂Release electric charge is instantaneous, make voltage-stabiliser tube D ₄Undertension to keep unidirectional controllable silicon S CR ₁Conducting and enter off-state; During this, capacitor C ₃Last institute charging voltage makes diode D ₃Be in blocking state.Therefore then trigger reset circuit and sealed rope, the equal consumed power not of two circuit.

Deenergization, capacitor C ₁, C ₃Beginning is through resistance R ₃Discharge is because capacitor C ₃The appearance value is much smaller than capacitor C ₁The appearance value, capacitor C ₁Discharging current neutralizing capacitance C ₃Electric charge and fill with reverse voltage, make diode D ₃Conducting, when institute's charging voltage through diode D ₃The conducting effect reach unidirectional controllable silicon S CR ₂The threshold voltage of the control utmost point makes controllable silicon SCR ₂The triggering and conducting capacitor C ₁, C ₃Discharge rapidly along this conducting branch road, this discharge pulse current is at coil L ₂The interior magnetic field that produces and the magnetic field superposition of permanent magnet 2, the suction of generation or thrust make and are tied with coil L ₂Magnetic conduction heel piece 1 side arm top and the gap-closing or the disconnection of armature 3, drive moving contact relay resetted; Capacitor C ₃Left end voltage reduces rapidly, makes unidirectional controllable silicon S CR ₂Enter cut-off state from conducting.

The time relay of the present utility model fully uses element function, only provides pulse current when the needs actuating of relay, then all is in blocking state during other, not consumed power, and reliable in action, and the life-span is long.This time relay manufacturing process is simple, is suitable for working under 220V or 380V AC power.

Claims

1, a kind of time relay, by power circuit, delay control circuit and formed by controlled relay, power circuit is converted into dc low-voltage with ac high-voltage, supply with delay control circuit, control the controlled actuating of relay, it is characterized in that by controlled relay be the permanent magnetism latching relay, form by current coil, magnetic conduction heel piece and armature, the vertical bar permanent magnet of a polarity is fixed by the U type yoke base plate central authorities that two side arms is wound with two current coils respectively, at its top hinge-coupled one armature, the armature one end moving contact that is fixedly connected; Two current coils insert the delay trigger circuit that constitutes delay control circuit respectively and trigger reset circuit, the magnetic flux that produces in the coil and permanent magnet magnetic flux in the same way or oppositely, adhesive or repulsion armature, moving contact moves with it, finishing time-delay and controlling.

2, the time relay according to claim 1, it is characterized in that being provided with magnetic conduction sheet 4 between permanent magnet 2 and the armature 3, in the middle of magnetic conduction heel piece 1 base plate both sides, be provided with the boss seam, permanent magnet 2 magnetic conduction sheets 4, hinge 5 two ends are set in the pilot hole of offering on the both sides support body 67 together with boss, finish textural association.

3, according to claim 1, the 2 described time relays, it is characterized in that delay control circuit is made of delay trigger circuit and triggering reset circuit, wherein delay trigger circuit is rc-delay circuit R _W, C ₂Be parallel to capacitor C ₂The unidirectional controllable silicon S CR at two ends ₁With coil L ₁The triggering series arm constitute voltage-stabiliser tube D ₄Be connected to controllable silicon SCR ₁The control utmost point and anode between; Triggering reset circuit is capacitance-resistance discharge loop R ₃, C ₁, C ₃Be connected to capacitor C ₃, resistance R ₃The unidirectional controllable silicon S CR at two ends ₂With coil L ₂The triggering series arm constitute capacitor C ₃With resistance R ₃Contact H and controllable silicon SCR ₂The control utmost point meet a blocking diode D ₃, capacitor C ₃The appearance value is much smaller than capacitor C ₁The appearance value, contact H and rectifier diode D ₁Negative electrode meet a rectifier diode D in the same way ₂, for keeping capacitor C ₃Blocking voltage, rectification branch road D ₁Last series connection one resistance R ₂