CN2865102Y - Magnetic hold electromagnetic switch mechanism for electricity-leakage compound protector - Google Patents
Magnetic hold electromagnetic switch mechanism for electricity-leakage compound protector Download PDFInfo
- Publication number
- CN2865102Y CN2865102Y CN 200520104569 CN200520104569U CN2865102Y CN 2865102 Y CN2865102 Y CN 2865102Y CN 200520104569 CN200520104569 CN 200520104569 CN 200520104569 U CN200520104569 U CN 200520104569U CN 2865102 Y CN2865102 Y CN 2865102Y
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- coil
- armature
- circuit
- switch
- switching mechanism
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Abstract
A magnetic holding electromagnetic switching mechanism for integrated electrical leakage protector is provided, which belongs to the domain of emergency protecting circuits and devices. The switching mechanism comprises a fixed armature core fabricated with stacked silicon steel plates, a moving armature on a movable trestle, a coil on the fixed armature, and a switch control circuit in the switch shell. It is characterized in that: a permanent magnet steel piece is arranged on the movable trestle, at the position facing the fixed armature core; the coil is connected to a two-way driver circuit, and the input end of the two-way driver circuit is connected to the control output end of the switch control circuit. With the arrangement of the two-way driver circuit and permanent magnetic steel piece for the coil, the cycle time of live operation of the coil can be reduced, and thereby the problem of damage to the switch resulted from heat accumulation on the coil is solved, and the switching operation reliability of the integrated electrical leakage protector is improved greatly. Therefore, the utility model is helpful for safe and stable operation of the power supply system. The utility model can be widely used in production and manufacturing of electromagnetic electricity leakage protector of all sizes and models.
Description
Technical field
The utility model belongs to emergency protective circuit device field, relates in particular to a kind of switching mechanism that is used for the leakage comprehensive protector of cable or line system sectionalised protection.
Background technology
The electromagnetic leakage comprehensive protection device; be a kind of power supply unit, supply line are implemented comprehensive integrated protection and have the comprehensive leakage protective device of on-load switch function concurrently; because of its have simple in structure, send advantages such as electricity automatically; both can be used as the switch or the circuit breaker of on-load, can do the earth leakage protective comprehensive protector of circuit again.
The present electromagnetic switching mechanism of the earth leakage protective device of producing in the earth leakage protective industry all adopts by what stacked " U " font of multi-disc or " E " font silicon steel sheet constituted and decides armature, is positioned at moving armature on the travel(l)ing rest, is used for the back-moving spring that travel(l)ing rest resets and is positioned at the electromagnetism suction type switch motion assembly that the coil decided on the armature constitutes.It adopts the operation principle of " high voltage startup; low voltage sustain ", when the needs electromagnetic switch is closed, coil is sent into the voltage (Us: the rated operational voltage of solenoid winding) of 0.85～1.1 times of Us, coil produces magnetic field, and with the downward adhesive of moving armature, travel(l)ing rest overcomes the elastic force of back-moving spring, drive the switch moving contact and contact closure with fixed contact pressure, connect load loop; After the electromagnetic switch closure, coil is sent into the voltage of keeping that is not less than its release voltage (being generally 0.25 times Us), with the lasting closure that guarantees electromagnetic switch and the reliable connection of circuit; When the needs electromagnetic switch disconnected, to coil blackout, travel(l)ing rest popped up under the effect of back-moving spring elastic force, drove the switch moving contact and separated rapidly with fixed contact, disconnected load loop.
But adopt the electromagnetic switch of said structure, be subjected to the restriction of inner space, the volume of its coil can not be too big, and in order to guarantee its electromagnetic attraction, its number of ampere turns again can not be too little, so adopt the form of " little line footpath, multiturn number " to make its coil usually.
Because its coil is in "on" position all the time when work; electromagnetic switch for the earth leakage protective device that works long hours; tend to cause its coil heating serious; occur because of the heating distortion of coil or burn the situation that causes the leakage comprehensive protector cisco unity malfunction through regular meeting; have a strong impact on the normal operation and the power supply quality of protective device, be unfavorable for safety, the stable operation of electric power system.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of leakage comprehensive protector magnetic and keeps electromagnetic switching mechanism; the charged operating time of its coil is short; solved the problem that causes switch to damage because of coil heating; improve the reliability of leakage comprehensive protector switch work greatly, helped safety, the stable operation of electric power system.
The technical solution of the utility model is: provide a kind of leakage comprehensive protector magnetic to keep electromagnetic switching mechanism, comprise by stacked the deciding the armature iron core, be positioned at moving armature on the travel(l)ing rest, be positioned at the ON-OFF control circuit of deciding the coil on the armature and being positioned at switch case of constituting of multi-disc silicon steel sheet, it is characterized in that: on described travel(l)ing rest with decide corresponding position, armature iron core position the permanent-magnet steel body be set; Its described coil is connected with drive circuit in bi-directional; The input of drive circuit in bi-directional is connected with the control output end of ON-OFF control circuit.
Above-mentioned permanent-magnet steel body is arranged on the travel(l)ing rest below and decides on the corresponding position of armature position; The cross section of permanent-magnet steel body is rectangle, the square or circular identical or approximate with deciding armature iron core shape of cross section.
Its drive circuit in bi-directional is the bistable state reverse circuit of controlled bidirectional impulse output circuit or dual input control end, corresponding with the control output end of the ON-OFF control circuit respectively connection of two input control end, its output is connected with the two ends of coil, drive circuit in bi-directional is under the control of ON-OFF control circuit, when switch closure, coil is exported a direct impulse, when switch disconnects, coil is exported a reverse impulse, when during the switch closure and after disconnecting, not to the coil output pulse signal.
Compared with the prior art, the utility model has the advantages that:
Only when the closed and disconnected of electromagnetic switch; just there is electric current to flow through in its coil; it during operate as normal magnetic attraction by the permanent-magnet steel body closure of keeping switch; the charged operating time of its coil is short; solved the problem that causes switch to damage because of coil heating; improve the reliability of leakage comprehensive protector switch work greatly, helped safety, the stable operation of electric power system.
Description of drawings
Fig. 1 is a mechanical structure schematic diagram of the present utility model;
Fig. 2 is the circuit block diagram of the utility model;
Fig. 3 is the line map of embodiment of the drive circuit in bi-directional of the utility model;
Fig. 4 is the input of drive circuit in bi-directional, the oscillogram of output.
1 is travel(l)ing rest among the figure, and 2 for to decide armature, and 3 is the permanent-magnet steel body, and 4 is coil, and 5 is drive circuit in bi-directional, and 6 is ON-OFF control circuit.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
Among Fig. 1, on travel(l)ing rest 1 with decide corresponding position, armature 2 iron core positions permanent-magnet steel body 3 be set, the two ends of its coil 4 are connected with the drive circuit in bi-directional (not shown), and the input of drive circuit in bi-directional is connected with the control output end of ON-OFF control circuit (not shown).
The permanent-magnet steel body can be arranged on the travel(l)ing rest below and decide on the corresponding position of armature position.
The cross section of its permanent-magnet steel body is rectangle, the square or circular identical or approximate with deciding armature iron core shape of cross section.
Among Fig. 2, be provided with permanent-magnet steel body 3 with travel(l)ing rest 1 (not shown) of deciding corresponding position, armature 2 iron core positions, the two ends a, the b that decide armature coil 4 are connected the input U of drive circuit in bi-directional with output Uj1, the Uj2 of drive circuit in bi-directional 5
a, U
bBe connected with control output end Ka, the Kb of ON-OFF control circuit 6.
Drive circuit in bi-directional is exported a direct impulse to coil when switch closure under the control of ON-OFF control circuit, when switch disconnects, coil is exported a reverse impulse, when during the switch closure and after disconnecting, not to the coil output pulse signal.
ON-OFF control circuit is a prior art, and its concrete circuit and the course of work are no longer narrated.
Among Fig. 3, drive circuit in bi-directional is the bistable state reverse circuit of controlled bidirectional impulse output circuit or dual input control end, two input control end U
a, U
bCorresponding with the control output end of ON-OFF control circuit (not shown) respectively connection, its output is connected with the two ends of coil.
As a kind of embodiment, when above-mentioned drive circuit in bi-directional adopts bistable state reverse circuit form, can comprise triode T1～T6 and resistance R 1～R6.Wherein, the base stage of T1 is through resistance R 1 and input control end U
aConnect input control end U
aAlso be connected with the base stage of T6 through resistance R 6, the collector electrode of T1 is connected with the positive pole+E of power supply through resistance R 2, and is connected the grounded emitter of T1 with the base stage of T2 simultaneously;
The emitter of T2 is connected with the positive pole+E of power supply, and its collector electrode is connected with an end of coil and the collector electrode of T3;
The grounded emitter of T3, its base stage is through resistance R 3 and another input control end U
bConnect.
Equally, the base stage of T4 is through resistance R 4 and input control end U
bConnect, the collector electrode of T4 is connected with the positive pole+E of power supply through resistance R 5, is connected the grounded emitter of T4 with the base stage of T5 simultaneously;
The emitter of T5 is connected with the positive pole+E of power supply, and its collector electrode is connected with the other end of coil and the collector electrode of T6;
The grounded emitter of T6.
Work as U
a=1, U
b=0 o'clock, the T1 conducting, U1 is a low level, the T2 conducting, T6 conducting simultaneously, power supply to coil, arrives ground through T6 through T2 again, the coil adhesive, the pulling force that travel(l)ing rest overcomes back-moving spring moves downwards, the switch contact closure.
Work as U
a=0 and U
b=0 o'clock, travel(l)ing rest maintained attracting state by the magnetic attraction of permanent-magnet steel body, and closure state is continued to maintain in the contact of switch.
Work as U
a=0, U
b=1 o'clock, the T4 conducting, U4 is a low level, the T5 conducting, T3 conducting simultaneously, power supply to coil, are arrived ground through T3 through T5 again, and coil produces a reverse magnetic thrust, travel(l)ing rest overcomes the upwards action of magnetic attraction of permanent-magnet steel body under the tension of back-moving spring, switch contact disconnects.
Above-mentioned drive circuit in bi-directional not only is confined to the bistable state reverse circuit of the shown dual input control end of this figure, and other controlled bidirectional impulse output circuits (discrete component formula or ic-type) with type all can be realized the goal of the invention of the technical program.
Among Fig. 4, work as U
a=1 o'clock, U
JBe a direct impulse, coil adhesive, switch closure; U
a=0 and U
b=0 o'clock, the no pulse electric current flow through in the coil; Work as U
b=1 o'clock, U
JBe a negative-going pulse, coil produces an opposing magnetic field, causes the travel(l)ing rest release that resets, and switch disconnects.
Because drive circuit in bi-directional and the permanent magnetic steel of the utility model by coil is set; make that the charged operating time of its coil is short; solved the problem that causes switch to damage because of coil heating; improve the reliability of leakage comprehensive protector switch work greatly, helped safety, the stable operation of electric power system.
The utility model can be widely used in the manufacturing field of all size model electromagnetic leakage protector.
Claims (4)
1. a leakage comprehensive protector magnetic keeps electromagnetic switching mechanism; comprise by stacked the deciding the armature iron core, be positioned at moving armature on the travel(l)ing rest, be positioned at the ON-OFF control circuit of deciding the coil on the armature and being positioned at switch case of constituting of multi-disc silicon steel sheet, it is characterized in that:
On described travel(l)ing rest with decide corresponding position, armature iron core position the permanent-magnet steel body be set;
Its described coil is connected with drive circuit in bi-directional;
The input of drive circuit in bi-directional is connected with the control output end of ON-OFF control circuit.
2. keep electromagnetic switching mechanism according to the described leakage comprehensive protector magnetic of claim 1, it is characterized in that described permanent-magnet steel body is arranged on the travel(l)ing rest below and decides on the corresponding position of armature position.
3. keep electromagnetic switching mechanism according to the described leakage comprehensive protector magnetic of claim 1, the cross section that it is characterized in that described permanent-magnet steel body is rectangle, the square or circular identical or approximate with deciding armature iron core shape of cross section.
4. keep electromagnetic switching mechanism according to the described leakage comprehensive protector magnetic of claim 1; it is characterized in that described drive circuit in bi-directional is the bistable state reverse circuit of controlled bidirectional impulse output circuit or dual input control end; corresponding with the control output end of the ON-OFF control circuit respectively connection of two input control end, its output is connected with the two ends of coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520104569 CN2865102Y (en) | 2005-10-31 | 2005-10-31 | Magnetic hold electromagnetic switch mechanism for electricity-leakage compound protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520104569 CN2865102Y (en) | 2005-10-31 | 2005-10-31 | Magnetic hold electromagnetic switch mechanism for electricity-leakage compound protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2865102Y true CN2865102Y (en) | 2007-01-31 |
Family
ID=37677554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520104569 Expired - Fee Related CN2865102Y (en) | 2005-10-31 | 2005-10-31 | Magnetic hold electromagnetic switch mechanism for electricity-leakage compound protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2865102Y (en) |
-
2005
- 2005-10-31 CN CN 200520104569 patent/CN2865102Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |