CN1215906A - Electric appliance switch contact system - Google Patents
Electric appliance switch contact system Download PDFInfo
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- CN1215906A CN1215906A CN 97114273 CN97114273A CN1215906A CN 1215906 A CN1215906 A CN 1215906A CN 97114273 CN97114273 CN 97114273 CN 97114273 A CN97114273 A CN 97114273A CN 1215906 A CN1215906 A CN 1215906A
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- contact
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- transition
- disjunction
- moving contact
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Abstract
A contact system of electric switch for turning on or off or switching circuit features use of transition part and transition step to suppress the arc generation between contacts for longer service life and higher reliability.
Description
The present invention relates to a kind of electric apparatus control apparatus, in particular for the contact system for electric switches of connection, shutoff or change-over circuit.
Appliance switch is the control device of using always, use wide, form is different of a great variety, one pole, bipolar, three utmost points are arranged, hand switch such as knife switch, toggle switch, key switch, slide switch, air switch (or claiming air circuit) are arranged,, electrodynamic type switch such as relay, contactor are arranged ... Deng.No matter its form kind how, common task is all arranged, be exactly to connect, turn-off or change-over circuit, common core component is all arranged, it is exactly the mechanical type contact system, common characteristic is all arranged, be exactly to realize connecting by contact system, turn-off or change-over circuit, common drawback is all arranged, be exactly at nominal working conditions (voltage, electric current) connects down, produce electric arc between contact when shutoff or change-over circuit, at high voltage-rated (alternating current 220V for example, 380V, direct current 440V) connects under the heavy load conditions, turn-off, or the electric arc that produces between contact during change-over circuit be have destructive, electric arc produces high heat makes the contact surface fusing form " burr ", further accelerating to damage contact scraps whole switch, burn contact when electric arc is serious even produce so-called " melting welding accident " and make runaway electric circuit, cause the bigger accidental loss of Circuits System, existing big capacity switch adopts arc-extinguish chamber to suppress electric arc, and arc-extinguish chamber also usually burns out switch is scrapped.The semiconductor noncontacting switch does not produce electric arc when connection, shutoff or change-over circuit, promoted and used, but the semiconductor noncontacting switch is high impedance rather than impedance infinity at off state, particularly semiconductor device can be because of quality problems or the circuit reason punch through damage such as crest voltage that occur overflowing, use people in the round-the-clock important circuit that moves continuously automatically worry, so the semiconductor noncontacting switch can't replace above-mentioned various mechanical contact formula switches at present.
The purpose of this invention is to provide a kind of contact system for electric switches, it not only can be at connection under the rated condition, shutoff or change-over circuit, and the electric arc between contact can be suppressed at connection, shutoff or change-over circuit the time.
The object of the present invention is achieved like this: adopt transitional parts, take transitional step to assist to realize that connection, shutoff or change-over circuit reach the purpose that suppresses electric arc.Moving contact is being arranged, on the contact system for electric switches basis of fixed contact, increase transition contact, control contact and semiconductor noncontacting switch, semiconductor noncontacting switch two ends respectively with transition contact, fixed contact is electrically connected, the signal end of semiconductor noncontacting switch is electrically connected with the control contact, the arrangement of contact meets sequence of movement and requires: connection is that first step moving contact and transition contact are connected in proper order, second step control contact is connected, the 3rd step moving contact is connected with fixed contact again, shutoff is first step moving contact and fixed contact disjunction in proper order, the second step control contact disjunction, the 3rd step moving contact again with the transition contact disjunction.At off state, each contact is in the disjunction state, connection process first step moving contact and transition contact are connected, it is cambic preliminary access, turn-off the semiconductor noncontacting switch that is high impedance this moment and form the high-impedance state of connecting with transition contact, can not produce destructive electric arc, second step control contact is connected the signal end electricity that makes the semiconductor noncontacting switch and is connected, the controlled signal of semiconductor noncontacting switch and open and be Low ESR low pressure drop (about 1 volt), circuit enters transitional opening state, do not produce electric arc, semiconductor noncontacting switch and fixed contact, moving contact (transition contact) forms low-resistance low-pressure state in parallel, the 3rd step moving contact is connected with fixed contact again and is realized connecting circuit, can not produce destructive electric arc.Breaking circuit process first step moving contact and fixed contact disjunction, be transitional initial gross separation, control contact and still keep on-state this moment, and the semiconductor noncontacting switch is under the condition of opening, can enter in the utmost point short time of several microseconds and open that circuit is continued is open-minded, can not produce destructive electric arc.The disjunction of second step control contact, semiconductor noncontacting switch signal out of hand and turn-off and be high impedance, circuit enters transitional the shutoff, do not produce electric arc, the semiconductor noncontacting switch forms the high-impedance state of connecting again with transition contact, the 3rd step moving contact and transition contact disjunction realize breaking circuit, can not produce destructive electric arc.
A bipolar transistor just can constitute the semiconductor noncontacting switch, its collector electrode, emitter is semiconductor noncontacting switch two ends, draw first signal end from collector electrode, base stage is electrically connected the lower end of a resistance, draw second signal end from the upper end of resistance, these two signal ends are electrically connected with corresponding two control contacts, after triode adds the forward operating voltage, if connect then two the just electrical connections of signal ends of two control contacts, forward voltage on the collector electrode is through the control contact, signal end, resistance makes the triode conducting to base stage, we say the controlled signal of semiconductor noncontacting switch (opening under the condition) and are open-minded, if will control then semiconductor noncontacting switch signal out of hand and turn-offing of contact disjunction, the rest may be inferred by analogy.Collector electrode is as a wherein end at semiconductor noncontacting switch two ends, it is electrically connected with transition contact, be that the semiconductor noncontacting switch can utilize transition contact as its first signal end, as long as drawing second signal end just can, adopt this based semiconductor noncontacting switch can make signal end obtain simplifying, the corresponding control contact that makes is simplified, thereby makes designs simplification.Moving contact is being arranged, increase transition contact on the contact system for electric switches basis of fixed contact, control contact and semiconductor noncontacting switch, semiconductor noncontacting switch two ends respectively with transition contact, fixed contact is electrically connected, the signal end of semiconductor noncontacting switch is electrically connected with the control contact, the arrangement of contact meets sequence of movement and requires: connection is that first step moving contact and transition contact are connected in proper order, the second step moving contact is connected with the control contact again, the 3rd step moving contact is connected with fixed contact again, shutoff is first step moving contact and fixed contact disjunction in proper order, the second step moving contact again with control contact disjunction, the 3rd step moving contact again with the transition contact disjunction.Circuit is in the disjunction state at each contact of off state, connecting the connection of circuitry processes first step moving contact and transition contact is transitional preliminary the access, under the series connection high-impedance state, carry out, can not produce destructive electric arc, the second step moving contact is connected with the control contact again, this moment moving contact, the signal end electricity of control contact and semiconductor noncontacting switch is connected, the controlled signal of semiconductor noncontacting switch and open-minded, circuit enters transitional opening state, do not produce electric arc, the 3rd step moving contact is connected with fixed contact again and is realized connecting circuit under low-resistance low-pressure state in parallel, do not produce destructive electric arc, breaking circuit process first step moving contact and fixed contact disjunction, it is transitional initial gross separation, this moment, the semiconductor noncontacting switch was under the condition of opening, can enter opening state in the utmost point short time of several microseconds makes circuit lasting open-minded, can not produce destructive electric arc, the second step moving contact again with control contact disjunction, semiconductor noncontacting switch signal out of hand and turn-off and be high impedance, do not produce electric arc, the 3rd step moving contact is realized breaking circuit with the transition contact disjunction again under the series connection high-impedance state, can not produce destructive electric arc.
In order to adapt to the different rated voltages and the needs of specified discharge capacity, except bipolar transistor, also has Darlington transistor, metal-oxide-semiconductor field effect transistor, the V-MOS pipe, thyristor or its make up mutually or solid-state relay etc. all can constitute the semiconductor noncontacting switch, these different semiconductor noncontacting switches have a pair of signal end, a pair of above signal end is arranged, need adapted control corresponding contact, moving contact is being arranged, increase transition contact on the contact system for electric switches basis of fixed contact, the control contact, control moving contact and semiconductor noncontacting switch, semiconductor noncontacting switch two ends respectively with transition contact, fixed contact is electrically connected, the signal end of semiconductor noncontacting switch is electrically connected with the control corresponding contact, the arrangement of contact meets sequence of movement and requires: connection is that first step moving contact and transition contact are connected in proper order, second step control moving contact is connected with the control contact, the 3rd step moving contact is connected with fixed contact again, shutoff is first step moving contact and fixed contact disjunction in proper order, the second step control moving contact and the disjunction of control contact, the 3rd step moving contact again with the transition contact disjunction.Circuit is in when turn-offing, each contact is in the disjunction state, connecting the connection of circuitry processes first step moving contact and transition contact is transitional preliminary the access, can not produce destructive electric arc, because under the series connection high-impedance state, carry out, second step control moving contact is connected with the control contact, the signal end electricity of semiconductor noncontacting switch is connected, the semiconductor noncontacting switch enters opening state, circuit enters transitional open-minded, do not produce electric arc, the 3rd step moving contact is connected with fixed contact again and is realized connecting circuit under low-resistance low-pressure state in parallel, can not produce destructive electric arc, breaking circuit process first step moving contact and fixed contact disjunction are transitional initial gross separations, controlling moving contact this moment still keeps connecting with the control contact, can enter in the utmost point short time and open that circuit is continued is open-minded opening under the condition semiconductor noncontacting switch, can not produce destructive electric arc, second step control moving contact and the disjunction of control contact.Semiconductor noncontacting switch signal out of hand and turn-off and be high impedance, circuit enters transitional the shutoff, does not produce electric arc, and the 3rd step moving contact is realized can not producing destructive electric arc by breaking circuit with the transition contact disjunction again under the series connection high-impedance state.
Relay (contactor) is a kind of appliance switch of electricity powered form, with high-power, the electronic control of small-power control, far distance controlled connection, shutoff or change-over circuit, is used widely.Moving contact is being arranged, the relay of fixed contact (contactor) contact system increases transition contact on the basis, control contact and semiconductor noncontacting switch, semiconductor noncontacting switch two ends respectively with transition contact, fixed contact is electrically connected, the signal end of semiconductor noncontacting switch is electrically connected with the control corresponding contact, the arrangement of contact meets sequence of movement and requires: connection is that first step moving contact and transition contact are connected in proper order, first step control contact is connected, the 3rd step moving contact is connected with fixed contact again, shutoff is first step moving contact and fixed contact disjunction in proper order, the second step control contact disjunction, the 3rd step moving contact again with the transition contact disjunction.At the initial shutdown state, each contact is in the disjunction state, it is transitional preliminary the access that connection process first step moving contact and transition contact are connected, under the series connection high-impedance state, carry out, can not produce destructive electric arc, the second step control contact is connected and is made the controlled signal of semiconductor noncontacting switch and open and be low-resistance low pressure drop state, circuit enters transitional open-minded, do not produce electric arc, the 3rd step moving contact is connected with fixed contact again and is realized connecting circuit under low-resistance low-pressure state in parallel, can not produce destructive electric arc, turn off process first step moving contact and fixed contact disjunction, controlling contact this moment still keeps connecting, can enter in the utmost point short time and open holding circuit and continue open-minded opening under the condition semiconductor noncontacting switch, can not produce destructive electric arc, the disjunction of second step control contact, semiconductor noncontacting switch signal out of hand and turn-offing, circuit enters transitional off state, do not produce electric arc, the 3rd step moving contact is realized breaking circuit with the transition contact disjunction again under the series connection high-impedance state, can not produce destructive electric arc.
Above-mentioned is turning on and off of circuit, in fact, but the combination of the shutoff of circuit and the connection of circuit is the conversion of forming circuit just, the mechanical type contact is being connected strictly speaking, always between contact, produce discharge spark when shutoff or change-over circuit, described hereinly can not produce destructive electric arc and be meant electric arc is suppressed at very little degree significantly, be unlikely the fusing contact surface and damage the degree of contact, the present invention allows contact do transitional the access or disjunction under the series connection high-impedance state, under low-resistance low-pressure state in parallel, connect or transitional initial gross separation, the electric spark that produces between contact is very little, this and existing contact system are at the heavy load Low ESR, high voltage-rated (several one hundred volts) state is connected down, the electric arc that produces between contact during breaking circuit is compared, and above-mentioned electric arc has been suppressed significantly.Some occasion is very tight to the requirement of electric spark, in order further to suppress electric spark, also increase and absorb contact and RC absorption circuit, RC absorbs the circuit two ends and is electrically connected with fixed contact and absorption contact respectively, moving contact is still connected with absorbing contact when breaking circuit process first step moving contact and fixed contact disjunction, enters the several microsecond time utilization RC that open from disjunction moment to semiconductor noncontacting switch and absorbs circuit and issuable electric spark is absorbed curb.
Owing to adopt such scheme, contact system electric arc between contact when connection, shutoff or change-over circuit has been suppressed significantly, the working life and the reliability of contact system have been improved, make appliance switch durable, also avoid or reduced because of contact system and burnt or " melting welding accident " causes the bigger accidental loss of Circuits System, the transitional parts that adopt are also cheap, down the appliance switch cost reduced in equal rated condition (voltage, electric current).
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the first embodiment of the invention electrical schematic diagram.
Fig. 2 is the second embodiment of the invention electrical schematic diagram.
Fig. 3 is semiconductor noncontacting switch part exemplary circuit figure.
Fig. 4 is third embodiment of the invention electrical schematic diagram and structural representation.
Fig. 5 is the structural representation of Fig. 2 embodiment.
Fig. 6 is another structural representation of Fig. 2 embodiment.
Fig. 7 is another structural representation of Fig. 1 embodiment.
K semiconductor noncontacting switch M, N semiconductor noncontacting switch two ends B, B among the figure
1, B
2, B
3, B
4, B
5, B
6, B
7, B
8Semiconductor noncontacting switch signal end A
1Moving contact A
2Fixed contact A
3Transition contact A
4Control contact A
5Absorb contact D
1, D
2, D
3, D
4Control contact D
5, D
6Control moving contact X
1, X
2Contact system exit Y
1, Y
2Power input U input power supply R
LLoad G circuit board J
1, J
2, J
3, J
4Relay (contactor) R resistance C capacitor P
1, P
2, P
3, P
4, P
5, P
6Relay (contactor) coil exit
Among Fig. 1, be that the contact system for electric switches of exit has moving contact (A with X1, X2
1), fixed contact (A
2), also have transition contact (A
3), control contact (A
4) and semiconductor noncontacting switch (K), (M, N) is electrically connected with transition contact, fixed contact respectively at semiconductor noncontacting switch two ends, the signal end of semiconductor noncontacting switch (B) is electrically connected with the control contact, the arrangement of its contact meets sequence of movement and requires: connection is that first step moving contact and transition contact are connected in proper order, the second step moving contact is connected with the control contact again, and the 3rd step moving contact is connected with fixed contact again.Shutoff is first step moving contact and fixed contact disjunction in proper order, the second step moving contact and control contact disjunction, the 3rd step moving contact again with the transition contact disjunction.Each contact is in the disjunction state during off state, circuit connection process is to connect along direction of arrow first step moving contact and transition contact, be transitional preliminary the access, be under the series connection high-impedance state, carry out can not produce destructive electric arc, the second step moving contact is connected with the control contact again: U-Y
1-RL-X
1-A
1-A
4-B-K-N-X
2-Y
2-U, the controlled signal of semiconductor noncontacting switch is and open-minded, and circuit enters transitional open-minded: U-Y
1-RL-X
1-A
1-A
3-M-K-N-X
2-Y
2-U does not produce electric arc, and this moment, the semiconductor noncontacting switch formed low-resistance low-pressure state in parallel with fixed contact, moving contact (transition contact), and the 3rd step moving contact is connected with fixed contact again and realized connecting circuit (as dotted line A among the figure
1): U-Y
1-R
L-X
1-A
1-A
2-X
2-Y
2-U can not produce destructive electric arc, referring to Fig. 3, if power supply U is a DC power supply, can select for use in Fig. 3 (1), (2), (3) arbitrary example for example to select Fig. 3 (1) for use as the semiconductor noncontacting switch (K) among Fig. 1, the then above-mentioned second step moving contact is connected back: U-Y with the control contact
1-R
L-X
1-A
1-A
4-B-R
1-R
2-N-X
2-Y
2-U gives triode T
1Conducting base voltage (electric current) is provided, and Here it is controlled signal is and open-minded, and all the other each examples in like manner can be analogized.Breaking circuit process first step moving contact and fixed contact disjunction, because this moment, moving contact still kept connecting with the control contact, the semiconductor noncontacting switch opens that circuit is continued is open-minded opening under the condition to enter in the extremely short time, can not produce destructive electric arc, the second step moving contact again with control contact disjunction, semiconductor noncontacting switch signal out of hand and turn-offing, circuit enters transitional the shutoff, do not produce electric arc, the 3rd step moving contact is realized breaking circuit with the transition contact disjunction again under the series connection high-impedance state, can not produce destructive electric arc.
Among Fig. 2, with X
1, X
2, moving contact (A is arranged for the contact system for electric switches of exit
1), fixed contact (A
2), also have transition contact (A
3), control contact (D
1, D
2, D
3, D
4), control moving contact (D
5, D
6) and semiconductor noncontacting switch (K), semiconductor noncontacting switch two ends (M, N) is electrically connected with transition contact, fixed contact respectively, the signal end (B of semiconductor noncontacting switch
1, B
2, B
3, 3
4) be electrically connected with the control corresponding contact, the arrangement of contact meets sequence of movement and requires: connection is that first step moving contact and transition contact are connected in proper order, second step control moving contact is connected with the control contact, the 3rd step moving contact is connected with fixed contact again, shutoff is first step moving contact and fixed contact disjunction in proper order, the second step control moving contact and the disjunction of control contact, the 3rd step moving contact again with the transition contact disjunction.Only at the second control contact that goes on foot of connection, disjunction, referring to Fig. 3, for Fig. 3 (1)～(5), the semiconductor noncontacting switch shown in (0) has only a pair of signal end (B in the difference of Fig. 2 and Fig. 1
1, B
2), as long as corresponding have a pair of control contact (D
1, D
2) just can, even as Fig. 3 (1)～(4) and the signal end (B) that is reduced to shown in Figure 1, corresponding as long as a control contact (A
4) just can, and two couples of signal end (B are arranged for the semiconductor noncontacting switch shown in 3 (6)～(9)
1, B
2, B
3, B
4), corresponding will have two couples of control contact (D
1, D
2, D
3, D
4), by control moving contact (D
5, D
6) go to connect or disjunction control contact, to reach the purpose that control signal is passed to the semiconductor noncontacting switch, control moving contact (D
5, D
6) and moving contact (A
1) be synchronous interaction, connect along direction of arrow first step moving contact and transition contact in the connection process, be transitional preliminary the access, do not produce destructive electric arc, second step control contact is connected (D
5Make D
1, D
2Connect D
6Make D
3, D
4Connect) make the signal end electricity connect (B
1With B
2Electricity is connected, B
3With B
4Electricity is connected), the controlled signal of semiconductor noncontacting switch and open and do not produce electric arc, this moment, circuit entered transitional open-minded: U-Y
1-R
L-X
1-A
1-A
3-M-K-N-X
2-Y
2-U, the 3rd step moving contact is connected with fixed contact again and is realized connecting circuit: U-Y under low-resistance low-pressure state in parallel
1-R
L-X
1-A
1-A
2-X
2-Y
2-U, do not produce destructive electric arc, in breaking circuit process first step moving contact and fixed contact disjunction, controlling contact this moment still keeps connecting, can enter with the utmost point short time and open that circuit is continued is open-minded opening under the condition semiconductor noncontacting switch, do not produce destructive electric arc, the disjunction of second step control contact, semiconductor noncontacting switch signal out of hand and turn-off and be high impedance, circuit enters transitional off state, the 3rd step moving contact is realized breaking circuit with the transition contact disjunction again under the series connection high-impedance state, can not produce destructive electric arc.
Among Fig. 4 (1), with X
1, X
2For relay (contactor) contact system of exit has moving contact (A
1), fixed contact (A
2), also have transition contact (A
3), control contact (D
1, D
2, D
3, D
4) and semiconductor noncontacting switch (K), semiconductor noncontacting switch two ends (M, N) is electrically connected with transition contact, fixed contact respectively, the signal end (B of semiconductor noncontacting switch
1, B
2, B
3, B
4) and control corresponding contact (D
1, D
2, D
3, D
4) be electrically connected, the arrangement of contact meets sequence of movement and requires: connection is that first step moving contact and transition contact are connected in proper order, second step control contact is connected, the 3rd step moving contact is connected with fixed contact again, shutoff is first step moving contact and fixed contact disjunction in proper order, the second step control contact disjunction, the 3rd step moving contact again with the transition contact disjunction.Among the figure as seen, moving contact (A
1), fixed contact (A
2) be relay (contactor) J
3A pair of normally open contact.Change-over relay (contactor) J
1A pair of normally open contact (transition moving contact and transition fixed contact) in the transition fixed contact as transition contact (A
3), its transition moving contact and moving contact (A
1) also give same title moving contact (A after the electrical connection
1) play moving contact (A
1) effect, control contact (D
1, D
2, D
3, D
4) then be control relay (contactor) J
2Two pairs of normally open contacts, make the arrangement of contact meet energising magnetic that sequence of movement requires just should to require each relay (contactor) and close action and meet above-mentioned sequence of movement requirement: connection is first step change-over relay (contactor) J in proper order
1The energising magnetic closes, second step control relay (contactor) J
2Get the electromagnetism adhesive, the 3rd step relay (contactor) J
3Get the electromagnetism adhesive, shutoff is first step relay (contactor) J in proper order
3Dead electricity discharges, second step control relay (contactor) J
2Dead electricity discharges, the 3rd step change-over relay (contactor) J
1Dead electricity discharges.At off state, each contact all is in the disjunction state, connects circuitry processes first step J
1Get the electromagnetism adhesive, its normally open contact closure is moving contact (A
1) and transition contact (A
3) connect, be transitional preliminary access of circuit under the series connection high-impedance state, do not produce destructive electric arc, the second step J
2Get the electromagnetism adhesive, its normally open contact closure is promptly controlled contact and is connected (D
1, D
2Connect D
3, D
4Connect), the controlled signal of semiconductor noncontacting switch and open-minded does not produce electric arc, and circuit enters transitional open-minded: U-Y
1-R
L-X
1-A
1-A
3-M-K-N-X
2-Y
2-U, the 3rd step J
3Get the electromagnetism adhesive, its normally open contact closure is moving contact (A
1) and fixed contact (A
2) connect and realize connecting circuit: U-Y
1-R
L-X
1-A
1-A
2-X
2-Y
2-U because be to carry out, can not produce destructive electric arc under low-resistance low-pressure state in parallel.Breaking circuit process first step J
3Dead electricity discharges, and it is moving contact and fixed contact disjunction that its contact is replied normally open, at this moment J
1, J
2Still keep magnetic to close, can enter in the utmost point short time and open that circuit is continued is open-minded opening under the condition semiconductor noncontacting switch, can not produce destructive electric arc, the second step J
2Dead electricity discharges, the disjunction of control contact, semiconductor noncontacting switch signal out of hand and turn-off be high impedance, do not produce electric arc, the 3rd step J
1Dead electricity discharges, and its contact is replied normally open, i.e. moving contact and transition contact disjunction realizes breaking circuit, can not produce destructive electric arc under the series connection high-impedance state.The initial condition of above-mentioned control contact is often opened, in the connection process it is connected, and the initial condition that the control contact in fact also can be set is normally closed (connection), referring to Fig. 3 (8), with signal end B
1With B
2Connect B
3With B
4Connect (shown in dotted line), with B
5, B
6, B
7, B
8Be new signal end and the connection of control corresponding contact electricity, the control contact is initially normally closed, then B
5With B
6Connect B
7With B
8Connect, the semiconductor noncontacting switch shown in Fig. 3 this moment (8) is in off state, and the semiconductor noncontacting switch enters opening state during the disjunction of control contact.Fig. 4 (2) is to have with X
1, X
2Be the front view of the relay (contactor) of the contact system of exit, Fig. 4 (3) is the H of Fig. 4 (2)
1To view, Fig. 4 (4) is the I of Fig. 4 (2)
1-I
1Cutaway view, Fig. 4 (5) is the I of Fig. 4 (3)
2-I
2Cutaway view, J
1, J
2, J
3, K is assembled in that circuit board (G) is gone up, X
1, X
2Be the contact system exit, P
1, P
2, P
3Be J
1, J
2, J
3Magnetic coil exit, P4 are public exits.
Fig. 5 is Fig. 2 example structure schematic diagram, is slidingtype appliance switch schematic diagram, and Fig. 5 (1) is a front view, and Fig. 5 (2) is the H of Fig. 5 (1)
2To view, Fig. 5 (3) is the I of Fig. 5 (1)
3-I
3Cutaway view, Fig. 5 (4) is the I of Fig. 5 (2)
4-I
4Cutaway view, Fig. 5 (5) are moving part (A among Fig. 5 (3)
0) H
3To, H
4To view, Fig. 5 (6) is quiet (D among Fig. 5 (3)
0) H
3To view.As can be seen from Fig. 5, with X
1, X
2For the contact system of exit has moving contact (A
1), fixed contact (A
2), also have transition contact (A
3), control contact (D
1, D
2, D
3, D
4), control moving contact (D
5, D
6) and semiconductor noncontacting switch (K), semiconductor noncontacting switch two ends (M, N) is electrically connected with transition contact, fixed contact respectively, and the signal end of semiconductor noncontacting switch is electrically connected with the control corresponding contact, and these are electrically connected all to go up at circuit board (G) and realize.Moving part (A shown in Fig. 5 (5)
0) be on insulator, to load onto antifriction alloy moving contact (A
1), control moving contact (D
5, D
6) form, also having the simplest way is to form through etching with two-sided copper clad plate, quiet (D
0) also available two-sided copper clad plate simultaneously is etched into each contact, another side is etched into lead-in wire each contact is caused circuit board (G).Visible the right and left symmetrical structure among the figure can be expanded the contact discharge capacity by parallel operation, also can be used as respectively with X
1, X
2, and X
3, X
4, be the ambipolar contact system for electric switches of exit.The arrangement of each contact meets the sequence of movement requirement among the figure: connection is moving part (A shown in Fig. 5 (4) (5) (6) in proper order
0) along the direction of arrow, moving contact (A
1) and control moving contact (D
5, D
6) be synchronous interaction, first step moving contact (A
1) and transition contact (A
3) connect, second step control contact is connected (D
5Make D
1, D
2Connect D
6Make D
3, D
4Connect), the 3rd step moving contact (A
1) again with fixed contact (A
2) connect.Shutoff is moving part (A in proper order
0) the anti-direction of arrow, first step moving contact (A
1) and fixed contact (A
2) disjunction, the second step control contact disjunction, the 3rd step moving contact again with the transition contact disjunction.Absorb contact (A
5) be when further suppressing electric spark, to use.
Fig. 5 is simplified: deletion D
1, D
2, D
3, D
4, D
5, D
6, increase control contact (A
4) just become the structural representation of Fig. 1 embodiment.
Fig. 6 is another structural representation of Fig. 2 embodiment, is rotary electrical equipment construction of switch schematic diagram, and Fig. 6 (1) is a front view, and Fig. 6 (2) is the H of Fig. 6 (1)
5To view, Fig. 6 (3) is the I of Fig. 6 (1)
5-I
5Cutaway view, Fig. 6 (4) is the I of Fig. 6 (2)
6-I
6Cutaway view, its contact arrangement, sequence of movement etc. are identical with Fig. 5, also can be simplified to another structure chart of Fig. 1 embodiment.
Fig. 7 is relay (contactor) structural representation of Fig. 1 embodiment, and Fig. 7 (1) is an electrical schematic diagram, and Fig. 7 (2) (3) (4) is a structural representation.Fig. 7 (2) is to have with X
1, X
2Be relay (contactor) front view of the contact system of exit, Fig. 7 (3) is the H of Fig. 7 (2)
6To view, Fig. 7 (4) is the I of Fig. 7 (3)
7-I
7Cutaway view.Combination contact (A
1, A
3, A
4, A
2), semiconductor noncontacting switch (K), magnetic coil J
4The circuit board (G) that is connected electrically in go up to realize.P
5, P
6Be the exit of magnetic coil, J
4Adhesive and discharge and preferably to pass through the speed change impact mitigation measure, make contact action A
1→ A
3→ A
4→ A
2Connection and disjunction one suitable time difference was arranged.
Claims (4)
1. one kind is used for connecting, the contact system for electric switches of shutoff or change-over circuit has moving contact, fixed contact, it is characterized in that: also have transition contact, control contact and semiconductor noncontacting switch, semiconductor noncontacting switch two ends respectively with transition contact, fixed contact is electrically connected, the signal end of semiconductor noncontacting switch is electrically connected with the control contact, the arrangement of contact meets sequence of movement and requires: connection is that first step moving contact and transition contact are connected in proper order, the second step moving contact is connected with the control contact again, the 3rd step moving contact is connected with fixed contact again, shutoff is first step moving contact and fixed contact disjunction in proper order, the second step moving contact again with control contact disjunction, the 3rd step moving contact again with the transition contact disjunction.
2. one kind is used for connecting, the contact system for electric switches of shutoff or change-over circuit has moving contact, fixed contact, it is characterized in that: also have transition contact, the control contact, control moving contact and semiconductor noncontacting switch, semiconductor noncontacting switch two ends respectively with transition contact, fixed contact is electrically connected, the signal end of semiconductor noncontacting switch is electrically connected with the control corresponding contact, the arrangement of contact meets sequence of movement and requires: connection is that first step moving contact and transition contact are connected in proper order, second step control moving contact is connected with the control contact, the 3rd step moving contact is connected with fixed contact again, shutoff is first step moving contact and fixed contact disjunction in proper order, the second step control moving contact and the disjunction of control contact, the 3rd step moving contact again with the transition contact disjunction.
3. one kind is used for connecting, relay (contactor) contact system of shutoff or change-over circuit has moving contact, fixed contact, it is characterized in that: also have transition contact, control contact and semiconductor noncontacting switch, semiconductor noncontacting switch two ends respectively with transition contact, fixed contact is electrically connected, the signal end of semiconductor noncontacting switch is electrically connected with the control corresponding contact, the arrangement of contact meets sequence of movement and requires: connection is that first step moving contact and transition contact are connected in proper order, second step control contact is connected, the 3rd step moving contact is connected with fixed contact again, shutoff is first step moving contact and fixed contact disjunction in proper order, the second step control contact disjunction, the 3rd step moving contact again with the transition contact disjunction.
4. according to the described contact system of a claim in the claim 1 to 3, it is characterized in that: absorb contact and RC in addition and absorb circuit, RC absorbs the circuit two ends and is electrically connected with fixed contact, absorption contact respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97114273 CN1215906A (en) | 1997-10-28 | 1997-10-28 | Electric appliance switch contact system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97114273 CN1215906A (en) | 1997-10-28 | 1997-10-28 | Electric appliance switch contact system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1215906A true CN1215906A (en) | 1999-05-05 |
Family
ID=5172839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97114273 Pending CN1215906A (en) | 1997-10-28 | 1997-10-28 | Electric appliance switch contact system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1215906A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881517A (en) * | 2011-07-11 | 2013-01-16 | 北京人民电器厂有限公司 | Auxiliary contact device with two-station protection |
| CN104283202A (en) * | 2014-09-26 | 2015-01-14 | 蒋胜泉 | Surge suppression and electric spark elimination structure of power connection device |
| CN107331557A (en) * | 2017-09-04 | 2017-11-07 | 李欣钊 | A kind of trigger switch |
-
1997
- 1997-10-28 CN CN 97114273 patent/CN1215906A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881517A (en) * | 2011-07-11 | 2013-01-16 | 北京人民电器厂有限公司 | Auxiliary contact device with two-station protection |
| CN104283202A (en) * | 2014-09-26 | 2015-01-14 | 蒋胜泉 | Surge suppression and electric spark elimination structure of power connection device |
| CN104283202B (en) * | 2014-09-26 | 2018-03-16 | 蒋胜泉 | The surge suppression of power supply connecting device and electric spark eliminate structure |
| CN107331557A (en) * | 2017-09-04 | 2017-11-07 | 李欣钊 | A kind of trigger switch |
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