CN2657289Y - Improved composite double-controlling mode civil power supply switch - Google Patents

Abstract

The utility model is a composite new civil power switch capable of instant switching and dual control modes. It combines the function of the ordinary power control switch and the delay switch into one, has dual control functions, and the two control modes can be easily converted to each other. The actual product made by this device is embedded in the wall, and there are two LED indicator lights on the panel to prompt the current working status of the switch. It can be used to control lighting lamps or any other electrical appliances in dual working mode. It is suitable for any relay switch product design scheme in which the overall circuit and load are connected in series and there is no neutral line access. The unique design of the utility model can solve a product design problem that has always existed in the industry - how to adopt the relay type design in the design framework of no neutral line connected in series with the load. At the same time, it is not like the electromagnetic pollution of the power grid caused by the thyristor switch. It is a "green" product and can meet the electromagnetic detection requirements of the EMC standard. The new patent takes measures on the basis of the original design to increase the ability to switch loads, so that the range can reach 5W-1000W.

Description

Improved compound double control mode civil power switch

Technical field:

The utility model relates to the field of electricity, which is a civilian power supply control switch for general lighting purposes.

Background of the invention:

The existing power control switch does not have a product that combines the two functions of automatic delay and common on-off switch, which is inconvenient in design and use and limits the application range of the product. In addition, for the two-wire automatic switch connected in series with the load and not connected to the neutral line, it is all designed with a silicon controlled rectifier, which has the disadvantages of controlling the load power with small power, causing high internal heat generation in the switch, and causing electromagnetic pollution of the power supply. Ordinary automatic control switches can rarely achieve relatively large load power, and are often easy to burn out.

The utility model is formed on the basis of the utility model patent (02253935.2) of my original "dual-control mode novel civil power switch that can be converted in real time". The purpose of improvement is to further expand its power load capacity to adapt to a wider range.

Invention content:

The utility model improved composite double control mode civil power switch is a new type of lighting control switch, which is combined with a common power control switch and a delay switch, has dual control functions, and the two control modes can be easily converted to each other . The actual product made by this device is embedded in the wall, and there are two buttons and two LED indicator lights on the panel to prompt the current working status of the switch. One of the buttons is an on/off control key, and the other key is a delay control key. There are three working states of the switch, off, on and delay. When the two indicator lights are all on, it is in the off state, one yellow indicator light corresponds to the on and off control key, and the other green indicator light corresponds to the delay control key. Press the on and off control keys to turn on the power, and the corresponding yellow indicator light goes out, and then press the on and off control keys to turn off the power, and so on. Regardless of whether the switch is on or off, after pressing the delay control key, the switch turns to the delay working state, and when the delay time is over, the lighting lamp is automatically extinguished. When the delay control key is pressed and the device is in the delay working state (the green indicator light is off), press the on and off control keys during the delay period, and the lighting will turn to a constant light state, and then press the on, The OFF control key light turns off. It can be seen that these two working modes are completely interchangeable.

The automatic switch of the utility model is not only flexible in use, but also has very strong functions, and besides its rich functions, it also has a clear and vivid working status display. If it is equipped with ingenious industrial art design, it can bring people very good results. a feeling of. Therefore, such a light switch is very suitable for making high-end household switch products and some special switches used in specific occasions. For example, in the family bathroom, its time-delay performance can allow the exhaust fan to continue to exhaust the air for a period of time after people leave to eliminate indoor odors; in storage rooms, warehouses, public toilets and many other occasions, its dual functions will give people with more convenience. This device adopts a very ingenious design, it uses a relay as the power switch contact, and it is a two-wire wiring method like an ordinary mechanical switch, so it can directly replace the ordinary mechanical switch and install it on the wall of the general standard. Body switch slot, and it can be applied to various electrical appliances including inductive loads and capacitive loads like ordinary mechanical switches. In the home lighting system of the modern family and the use environment of public places in the future, the automatic switch of this double control mode must occupy the position of the mainstream. In addition, the design of the automatic switch of the present utility model fully considers the requirements of the national mandatory technical standard (3C certification) for switch products, and is designed according to the relevant standards of the IEC system, so as to meet the requirements of the product meeting the national standard and the internationalization of market development.

Technical solutions:

Due to the difficulty in design, all two-wire power automatic control switches in the prior art use silicon controlled rectifiers as power switching elements. Such switches often suffer from poor overcurrent tolerance of silicon controlled silicon devices. It often causes the thyristor to burn out, causing the switch product to be scrapped. The use of relay devices will greatly reduce the probability of damage to the automatic control switch. The relay has a better ability to withstand high current impact than the thyristor device. However, using the relay as the power switching element is a long-term unresolved technical problem in the design framework of the two-wire wiring method, that is, no neutral wire connection, and the switch and load are connected in series. The utility model well breaks through this design difficulty, and the switch can be designed to work in any control mode including the bistable working mode. In addition, the use of relays as switching elements does not necessarily produce harmonic pollution power supplies like thyristor switches, so it is a "green product" that is very beneficial to solving the problem of electromagnetic interference in the power grid. With this type of circuit design, the actual product can be made into a neutral-wire-free wall-embedded switch like ordinary mechanical switches. It has low static power consumption, strong anti-interference ability, low product cost, and the load is not limited to pure resistance. characteristics of the load. In the past Chinese utility model patents except the inventor, there is no such thing, and there is no actual product to come out.

Description of drawings:

Accompanying drawing 1 is the schematic diagram of the circuit of the utility model, and accompanying drawing 2 is the appearance structure diagram of the utility model.

Implementation method:

Please refer to accompanying drawing 1 for circuit principle of the present utility model, introduce as follows:

ICA and ICB in the accompanying drawing are a common double D flip-flop, one of which is connected into a standard bistable circuit, and the other is connected into a standard monostable circuit form. In addition, one of the output ends of the two is led out by an RC differential circuit to trigger their respective reset ends, so that if the clock input of ICA triggers the inversion of ICA, no matter what state ICB is in now, It must be reset by the output of ICA; on the contrary, if the clock input of ICB triggers the flip of ICB, no matter what state ICA is in, it must be reset by the output of ICB. Through such a method, the two work states can be mutually changed, and the automatic conversion of the two work modes is actually realized. It can be seen from the figure that the output of ICB is differentiated by the differential circuit composed of C9 and R8, and then connected to the R terminal of ICA through D5. The output of ICA is directly connected to the R terminal of ICB after being differentiated by the differential circuit composed of C3 and R5. A dual D flip-flop is chosen for the attached circuit, but it could be any other flip-flop element, including J-K flip-flop element.

An output terminal of ICA and ICB is respectively connected with a light-emitting diode, which can indicate the current working state of the circuit. The two light-emitting diode indicators corresponding to the two buttons on the switch panel can prompt the current working state of the switch. One of the buttons is an on/off control key, and the other key is a delay control key. There are three working states of the switch, off, on and delay. When the two indicator lights are all bright, they are in the off state, one indicator light corresponds to the on and off control key, and the other indicator light corresponds to the delay control key. The indicator light corresponding to which control key is pressed is off, indicating that it is in the corresponding working mode.

The output terminals of the two flip-flops are each guided by a diode, and are combined to output to the triode switch N1. The purpose of using the diode guide is that the two circuits will not affect each other. When any flip-flop has an output, the triode switch N1 is turned on, so that the relay acts and the load is turned on. After the load is turned on, a half-wave current flows through the relay circuit, so that a relatively strong current can ensure that the relay remains locked until the transistor switch N1 is turned off.

Compared with my previous patent (02253935.2), the utility model patent has increased parts in SCR, DW2, R13, R14 and D10, R15. The function of this part of the circuit is that when the switching power load is large, because the relay is connected in series with the load, a very large current needs to flow. The former scheme adopts common Zener diodes to bypass and stabilize the voltage to meet the excess current of the relay pull-in. But when the power load is too large, the actual load of the Zener tube itself will also increase relatively. Although a high-power regulator tube can be used, its heat generation problem is difficult to solve. For a power load of 500W, in the half-wave state, the current flowing is more than 2A, so the total heating power of the on-state inside the switch may reach 6W or even more than 10W. Obviously this will seriously endanger the performance reliability of the product, and even cause the switch to fail. This improved design can solve this problem. It uses a special thyristor circuit to meet the needs of voltage regulation and bypass excess current. It can be seen from the figure that when the alternating current starts from zero phase angle and the voltage increases gradually, before it reaches the conduction voltage of DW2, C10 can be charged and supplemented. After the turn-on voltage of DW2 is exceeded, the turn-on of DW2 makes the SCR turn on, thereby bypassing the large current flowing when the phase angle is large. The on-state voltage drop of the thyristor is only about 1V, which greatly reduces the actual power consumption inside the switch when the switch is in the on-state, making it within the allowable range.

Invention features:

The characteristics of the circuit shown in accompanying drawing 1 are particularly shown in: 1, as can be seen by accompanying drawing 1, integral circuit and load are connected in series, do not have zero line to insert. 2. The circuit composed of ICA, ICB and surrounding components is a bistable circuit and a monostable circuit respectively, which are composed of an integrated circuit trigger element with a reset terminal. 3. An RC differential circuit is used to lead out one output terminal of the two, and use it to trigger their respective reset terminals mutually. The Q+ terminal of ICA is connected to the R terminal of ICB through C3; the Q+ terminal of ICB is connected to the R terminal of ICA through C9 and D5. 4. The power switch of the circuit adopts relay components. 5. The connection method of the power switch part of the circuit is as shown in the figure. The power supply measures of the power switch relay are double. When the relay is not closed, its power is a simple circuit that is stepped down by a resistor and stabilized by a voltage regulator tube ( D7, R12, DW2, C10) supply; when the relay pulls in, its electrification mode changes, and is converted by its own contacts to be directly connected in series with the load circuit, only rectified by D8, and powered by half-wave current . 6. The pre-stage circuit and the relay switch circuit are powered by two different power supply circuits through different drop-down resistors R11 and R12, but after the relay is closed, the contacts of the relay will lock themselves in the series connection with the load. State, so that it continues to be powered, and maintains it to obtain sufficient maintenance current. At the same time, because DW2 is also connected in series in the loop, a potential is generated, so the power supply of the previous stage circuit is also maintained through D6 and R9. 7. Two light-emitting diode indicators can prompt the current working state of the switch. There are three working states of the switch, off, on and delay. When the two indicator lights are all bright, they are in the off state, one indicator light corresponds to the on and off control key, and the other indicator light corresponds to the delay control key. The indicator light corresponding to which control key is pressed is off, indicating that it is in the corresponding working mode. 8. A special thyristor voltage regulator and bypass excess current circuit is adopted, which greatly reduces the internal actual power consumption of the switch and solves the problem of excessive internal on-state heating of the product. 9. This type of circuit is suitable for any monostable delay switch and bistable control switch circuit with a relay as a switch contact, a zero-line design framework in which the overall switch circuit is connected in series with the load.

The beneficial effects of the utility model are: it solves the technical problem of using a relay as a power switch under the design framework of no neutral wire access, it adopts a resistor to step down, the static current is very small, and the use of a large-capacity electrolytic capacitor can make the relay Pull in the electric energy that should be met. This is a brand new design, and it has a very important meaning. The circuit with the relay contact as the power switch has the following characteristics: 1. The load is not limited to pure resistive load. Such a switch can be used for the control of exhaust fans, fluorescent lamps, and energy-saving lamps. 2. It has a strong ability to resist overcurrent, and the switch is not easy to burn out due to the high current of the load bulb at the end of its life, which greatly increases the durability of the product. 3. It does not produce the inevitable electromagnetic pollution problem of the power grid of the thyristor circuit, so it is a "green product" and creates very good conditions for the product to meet the EMC electromagnetic testing standard. The problems it can solve are very broad. The most innovative feature of the utility model is the design method of the switch without neutral line access, which uses the relay as the power contact and is connected in series with the load. In addition, the utility model provides a brand-new lighting switch form, which is an electronic switch with dual control modes. In addition to the conventional on and off modes, it also integrates a delay control mode. Automatic conversion can be done. At the same time, it has a unique working status display, which is very clear and easy for users to distinguish, so its use brings special convenience.

Application prospect:

The solution of the utility model is not only a fairly mature and specific technical solution, but also embodied in novelty and practicability. At the same time, it solves a very important technical problem - the whole switch is connected in series with the power load, and there is no neutral line In the case of access, it is difficult to design all switch products that use relays as power switches. This type of product is generally applicable to various embedded wall switches. Since most of the current building power distribution installations do not configure neutral wires in the switch slots (the cost of engineering consumables for adding one more neutral wire will increase a lot, and more copper wires will be consumed, and copper is a precious resource. From the perspective of the comprehensive benefits of the utilization of the entire social resources, it is very economically uneconomical), so what is needed in the market is a two-wire switch product that does not need to be connected to the neutral line, and this design has changed the wall embedded switch without a neutral line and cannot be used. Industry status quo of product design for relay components. In addition, the design of the automatic switch of the utility model fully considers the requirements of the national mandatory technical standard (3C certification) for switch products, and refers to the relevant standards of the IEC system so that the product can meet domestic and international standards. This is of great help to the product to expand the international market, so the potential economic significance of the utility model is extraordinary.

Claims (6)

1, the civilian mains switch of a kind of modified model Composite Double control model, immediately transform mode control, it can be used for illuminating lamp or other any electrical appliances are carried out the control of dual modes of operation, it is characterized in that its formation has with the lower part: with the relay be power switch circuit and can be between dual modes of operation the bistable circuit of conversion and monostable flipflop circuit integrated automatically mutually, its hold concurrently common power control switch of opening and closing and delay switch is an one.

2, device as claimed in claim 1 is characterized in that: its circuit is the power switch contact with the relay, integrated circuit and load are contacted, there is not zero line to insert, the power supply measure of power switch relay is dual, relay not during adhesive it electric be by the ball bearing made using supply of resistance step-down, voltage-stabiliser tube voltage stabilizing; Its electric mode that gets changes when the relay adhesive, is converted to by the contact of self directly to be connected in series with in the load circuit, utilizes the half-wave current power supply.

3, device as claimed in claim 1, it is characterized in that: the circuit that can change automatically mutually between dual modes of operation is the integrated of bistable circuit and monostable flipflop circuit, 1. both output is drawn with the RC differential circuit respectively, the reset terminal of using that triggers the other side mutually; 2. trigger can be a d type flip flop, also can adopt other the flip-flop element that has R reset terminal and S set end of any another kind, comprises the J-K flip flop element; 3. both output all respectively is connected with a light-emitting diode, work at present state that can indicating circuit; 4. front stage circuits is powered by the different power supply circuits of two covers through different dropping resistors respectively with relay switching circuit, but after the relay adhesive, the contact of relay will self lock in the state of contacting mutually with load, make it to continue, keep it and obtain enough electric currents of keeping, borrow D6 and R9 simultaneously, the power supply of front stage circuits has also obtained keeping; 4. use a kind of special controllable silicon voltage stabilizing/current bypass circuit, replace voltage stabilizing didoe that voltage stabilizing is carried out in the electricity consumption of self working of power switch relay; The real wasted work rate of switch inside when purpose is to reduce the switch on-state reduces heating effect.

4, the described device of claim 1, it is characterized in that: it is switch contact with the relay that such circuit is applicable to any, in the middle of the monostable time delay switch of the no zero line design framework that global switch circuit and load are contacted mutually and the circuit of bistable state control switch.

5, the described device of claim 1 is characterized in that: can point out switch work at present state with two light emitting diode lamps of two button correspondences on switch panel, one of them button is the open and close operating keys, another key is the time-delay operating key, switch has three kinds of operating states, turn-off, open and time-delay, two indicator lights are complete to be to close off-state when bright, and an indicator light is corresponding to the open and close operating key, and another indicator light is corresponding to the time-delay operating key.The indicator light of pressing which operating key correspondence extinguishes.

6, the described device of claim 1 is characterized in that: the Q+ end of ICA is connected to the R end of ICB by C3: the Q+ end of ICB is connected to the R end of ICA by C9, D5.

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