CN2218424Y

CN2218424Y - Touch switch

Info

Publication number: CN2218424Y
Application number: CN 95214358
Authority: CN
Inventors: 贾支辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-28
Filing date: 1995-06-28
Publication date: 1996-01-24
Anticipated expiration: 2005-06-28

Abstract

The utility model relates to a touch switch, comprising a switch housing part and a circuit part, wherein, the circuit part is composed of a power supply circuit and a switch circuit, wherein, the power supply circuit comprises a rectification circuit and a voltage stabilizing circuit; the switch circuit is composed of a monostable trigger formed by a D-typed trigger integrated circuit IC, a bistable trigger formed by a delay circuit and the integrated circuit IC, and a controlled silicon. The output end (Q) of the monostable trigger is connected with the input end (C) of the bistable trigger, the controlled silicon is connected in series in the power supply loop of a filament lamp, the control electrode of the controlled silicon is connected with the pulse output end (Q not) of the monostable trigger through a voltage stabilizing tube and a diode, and the triggering input end (C) of the monostable trigger is connected with a touch triggering plate. The delay circuit of the monostable trigger is composed of resistor-capacitor units.

Description

Contact witch

The utility model relates to a kind of appliance switch, particularly a kind of contact witch that is used for incandescent lamp.

At present, touch appliance switch kind is more, and many practical applications are also arranged, as touch lamp dimmer, and the touch delay switch that corridor lighting is used etc.Multiple contact witch is also disclosed on the patent documentation.But these switch ubiquities shortcomings such as circuit structure complexity, functional reliability difference.Particularly be not suitable for constituting various universal switches.Though " touch dimmer switch " patent (ZL94245688.2) of the applicant's application possesses many advantages, but its control mode all will be through the process of a gradual change, this process just seems unnecessary when not needing light modulation, thereby it is not suitable for some certain applications.

The purpose of this utility model is that the defective that overcomes prior art provides a kind of contact witch of controlling incandescent light source.Its circuit structure is simple, and volume is little, can constitute all kinds of universal switches.

The utility model is to realize like this, it comprises switch case and two parts of circuit, switch case is made of panel and back cover, circuit board is placed in one, circuit part is made of power circuit and switching circuit, the input of power circuit and civil power join, and it exports termination delay switch circuit, for switching circuit provides direct-current working volts, it is characterized in that power circuit comprises rectification circuit and voltage stabilizing circuit; Monostable flipflop and delay circuit thereof that switching circuit mainly is made of the D flip-flop integrated circuit (IC), flip and flop generator that integrated circuit (IC) constituted and controllable silicon constitute, the output of monostable flipflop (Q) links to each other with the input (C) of flip and flop generator, controllable silicon is series in the incandescent lamp current supply circuit, the silicon controlled control utmost point links to each other with the pulse output end (Q is non-) of monostable flipflop in the D flip-flop integrated circuit (IC) with diode via voltage-stabiliser tube, and the triggering input (C) of monostable flipflop is connected in touch trigger board in the D flip-flop integrated circuit (IC); The delay circuit of monostable flipflop is made of Resistor-Capacitor Unit.

Contact witch of the present utility model is serially connected with in the incandescent lamp current supply circuit, when human body touch triggers input, the triggering input of the monostable flipflop in the voltage signal input d type flip flop integrated circuit (IC) of human body sensing, make the output of monostable flipflop produce upset, make flip and flop generator also overturn thereupon, and then the conducting of control controllable silicon makes the current supply circuit conducting of bulb, d type flip flop is a monostable flipflop, the time of its upset is by its delay circuit control, overturn once more through d type flip flop after a section, but flip and flop generator is upset no longer thereupon at this moment, and switch still is in on-state.Have only and trigger monostable flipflop once more, flip and flop generator is upset once more, and controllable silicon extinguishes by lamp.

Switch of the present utility model is according to there being circuit structure simple, and reliable operation is easy to constitute advantages such as multiple universal switch.

Further describe the utility model below in conjunction with drawings and Examples.

Fig. 1 is the circuit theory diagrams of a kind of embodiment of the utility model.

Fig. 2 is the shape assumption diagram of a kind of embodiment of the utility model.

In shown in Figure 1 adding most among the embodiment, the circuit part of contact witch of the present utility model (part in the dotted line) is serially connected with incandescent lamp R by contact L, N _LIn the current supply circuit.In the circuit part, power circuit constitutes bridge rectifier by diode D1～D4, its output terminals A, B are as the dc supply input of circuit, the B end is reference ground, resistance R 1, capacitor C 2, diode D8, capacitor C 3 are connected in series, voltage-stabiliser tube D7 and diode D8, the capacitor C 3 formation voltage stabilizing circuit that is in parallel; Provide D.C. regulated power supply to switching circuit.Switching circuit is that core constitutes with monostable flipflop D11 and delay circuit, flip and flop generator D12 and the controllable silicon BCR that large scale integrated circuit IC (WCI493) constitutes, the triggering input C of monostable flipflop D11 in the integrated circuit (IC) links to each other with touch pad ZM via resistance R 2, R3, and monostable flipflop triggers output Q and links to each other with the triggering input C of flip and flop generator D12 in the integrated circuit (IC); The triggering output Q of flip and flop generator D12 is non-in the integrated circuit (IC) links to each other with the control utmost point G of controllable silicon BCR via diode D6, voltage-stabiliser tube D5; The delay circuit of monostable flipflop D11 is made of Resistor-Capacitor Unit and voltage-stabiliser tube, diode, and wherein resistance R 4 ^*After diode D9 is in parallel, the Q of termination monostable flipflop D11 end, the other end and C4 ^*Positive pole link to each other and C4 ^*Negative pole be connected in the S end of D11.The anode of controllable silicon BCR and negative electrode are connected to A, B point, and are series at incandescent lamp R _LCurrent supply circuit in.

The course of work of the present utility model is such, as contact witch of the present utility model and incandescent lamp R _LCivil power is inserted in the series connection back, forming peak value through bridge rectifier D1～D4 at controllable silicon BCR two ends is the unidirectional pulse voltage of 300V, between the rising stage of each pulse, pulse voltage is charged to capacitor C 2 by resistance R 1 and diode D7, and D7 is positioned at voltage clamp in 10～12V; Meanwhile, charge to C3 by D8.Between the decrement phase of each pulse, the electric charge of the last storage of C2 discharges by R1 and R5.Through several such cycles, the current potential on the C3 promptly reaches about 10V, because the load of the C3 faint cmos circuit that is power consumption so can keep that stable high potential is arranged on the C3, makes the IC maintenance working properly.

When staff soft-touch control plate ZM, R2, R3 constitute loop (high resistant is to people's safety) through human body and ground, and the triggering input C that gives IC is with triggering signal, and the monostable flipflop D11 among the IC is operated in monostable, and monostable delay time is: T=0.68*R4 ^** C4 ^*Second (R-M Ω, C-μ F), make that its output Q is a high potential, flip and flop generator D12 among the IC overturns thereupon, it triggers output Q non-is high potential, and keeps this state, the control utmost point G that at this moment D6 ends, the breakdown conducting of D5 triggers controllable silicon BCR, make the controllable silicon conducting, and then light incandescent lamp R _LD11 through one section delay time returns original operating state, and when at this moment hand touched trigger board ZM once more, the input of D11 overturn once more, and flip and flop generator D12 is upset thereupon also, it triggers output Q non-is electronegative potential, and keeps D6 conducting at this moment, D5 ends, and controllable silicon ends, R _LExtinguish, thereby finish the function of switch.

The utility model also can increase the position of display circuit with indicator cock, and it is by LED, and capacitor C 1 and resistance R 5 are composed in series, and is connected across between 2 of A, the B.When switch was in wait state, IC did not work, and electric current stream LED, R5 and C1 make light-emitting diode send faint light, with the position of indicator cock.

Because circuit volume of the present utility model is little, in the regular tap of can packing into, Fig. 2 is exactly a kind of embodiment of wall type flush type switch.The overall dimension of panel 1 and back cover 5 should conform to the GB requirement of common wall formula flush type switch among the figure.Circuit board 4 is loaded in the back cover by mounting screw 6.Power-line terminal 7 passes back cover and is exposed on the external.Lead 9 connects the annular trigger board 2 of panel central authorities and the trigger end of circuit.Trigger board 2 is at panel surface, and luminous tube 8 is adorned at the center of annular slab 2.Through hole 3 on the panel is the installing hole of switch.Therefore, wall type flush type switch that the utility model constitutes and regular tap are installed as broad as long, and it is convenient completely to use.

Claims

1. contact witch, it comprises switch case and two parts of circuit, switch case is made of panel and back cover, circuit board is placed in one, circuit part is made of power circuit and switching circuit, the input of power circuit and civil power join, and it exports termination delay switch circuit, for switching circuit provides direct-current working volts, it is characterized in that power circuit comprises rectification circuit and voltage stabilizing circuit; Monostable flipflop (D11) and delay circuit thereof that switching circuit is made of D flip-flop integrated circuit (IC), the flip and flop generator (D12) that integrated circuit (IC) is constituted, controllable silicon (BCR) constitutes, the output (Q) of monostable flipflop (D11) links to each other with the input (C) of flip and flop generator (D12), controllable silicon (BCR) is series in the incandescent lamp current supply circuit, the silicon controlled control utmost point (G) links to each other with the pulse output end (Q is non-) of monostable flipflop (D11) with diode through voltage-stabiliser tube, and the triggering input (C) of monostable flipflop (D12) is connected in touch trigger board (ZM); The delay circuit of monostable flipflop is made of Resistor-Capacitor Unit.

2. contact witch according to claim 1, it is characterized in that (D1～D4) constitutes bridge rectifier to power circuit by diode, its output (A, B) is as the dc supply input of circuit, (B) end is reference ground, resistance (R1), electric capacity (C2), diode (D8), electric capacity (C3) are connected in series, voltage-stabiliser tube (D7) and diode (D8), electric capacity (C3) the formation voltage stabilizing circuit that is in parallel; Monostable flipflop (D11) that switching circuit constitutes with integrated circuit (IC) and delay circuit thereof, flip and flop generator (D12), controllable silicon (BCR) constitute, the triggering input (C) of monostable flipflop (D11) links to each other with touch pad (ZM) via resistance (R2, R3), and monostable flipflop triggers output (Q) and links to each other with the triggering input (C) of flip and flop generator (D12); The triggering output (Q is non-) of flip and flop generator (D12) links to each other with the control utmost point (G) of controllable silicon (BCR) through diode (D6), voltage-stabiliser tube (D5); The delay circuit of monostable flipflop (D11) is by resistance (R4 ^*) with after diode (D9) is in parallel, (Q) of a termination monostable flipflop (D11) end, the other end and (C4 ^*) positive pole link to each other and (C4 ^*) negative pole be connected in the S end of monostable flipflop (D11); The anode and the negative electrode of controllable silicon (BCR) are connected to (A, B) point, and are series at incandescent lamp (R _L) current supply circuit in.

3. contact witch according to claim 1, it is characterized in that to increase display circuit in the soft-touch control, it is by light-emitting diode (LED), electric capacity (C1) and resistance (R5) are composed in series, be connected across between 2 of A, the B, the positive pole of light-emitting diode (LED) connects (A) point, and a termination of electric capacity (C1) is with reference to ground (B) point.