CN2381006Y - Turn-off delay switch - Google Patents

Abstract

The utility model relates to a turn-off delay switch, which belongs to a low voltage apparatus. The utility model is composed of a switch body structure component and a turn-off time delay circuit, wherein, a box-shaped structure is arranged on the switch body structure component, the turn-off time delay circuit is arranged in the box-shaped structure, and the outside of the box-shaped structure is clamped with a box cover. The turn-off time delay circuit is composed of a bridge rectifier, a silicon controlled rectifier, four resistors, a switch, a triode, an electrolytic condenser and a voltage regulator tube. The utility model can conveniently realize the situation that when people come, a lamp is light and automatically maintains to light until the people pass by, and then, the lamp turns off. The utility model has the advantages of simple structure, low cost, reliable control, sensitive control, convenient operation and electricity saving. The utility model can be used for controlling a lighting lamp in a corridor and other occasions.

Description

The turn off delay time switch

The utility model relates to low-voltage electrical apparatus, more particularly belongs to be used to control the electricity-saving type turn off delay time switch of corridor lighting to realize turning off the light when you leave.

Up to now, the switch of domestic corridor lighting control mostly be greatly one open be bright one close promptly disconnected.Messenger only opens often and is not related to, otherwise can't pass by calmly having under the situation of illumination.Only opening the result who is not related to is that lamp is kept burning day and night, has wasted electric energy.Also there are many corridors that infrared-sensing type switch, audio-switch etc. have been installed at present, realized that the people comes then bright turning off the light when you leave, control or acoustic control automatically, power savings is good.But its cost is then often very high, and price is also high, and reliability is relatively poor, and general wage-earners are difficult to accept, and also just is difficult to large-scale popularization and uses.

The purpose of this utility model is to overcome above-mentioned shortcoming and defect, provide a kind of simple in structure, cost is low, good reliability, is easy to be accepted by general wage-earners, also just can extensively popularize; The passerby is walked calmly extinguish automatically more later, and delay time is adjustable, thereby can realize the turn off delay time switch that not only throws light on but also economize on electricity.

In order to achieve the above object, the utility model turn off delay time switch is made of switch body structural member and the turn off delay time circuit that is installed on the switch body structural member.Have box like structure on the switch body structural member, fastening dressing has the printed substrate that turn-offs delay circuit in the box like structure.Lid also is being fastened on the box like structure.

The turn off delay time circuit is by the bridge rectifier with the civil power input, and be connected in controllable silicon on bridge rectifier two outputs, be connected in resistance one and resistance two on the silicon controlled anode successively, and be connected in resistance three and the resistance four that silicon controlled control is extremely gone up, be installed in the two-position switch on the output contact of contact between resistance one and the resistance two and resistance three and resistance four, the base stage triode that emitter links to each other with the output contact of resistance three that links to each other with resistance two output contacts, and be connected in the collector electrode of triode and electrochemical capacitor and the voltage-stabiliser tube between the silicon controlled negative electrode constitutes.

When switch during in position 1, during just with the output contact short circuit of contact between resistance one and the resistance two and resistance three, electric current triggers controllable silicons through resistance one and resistance three and makes it conducting.Alternating current just becomes direct current through bridge rectifier, through the controllable silicon lighting load of flowing through, makes lamp bright again.Switch can be a manual switch, also can be audio-switch or other switch.Before controllable silicon was triggered conducting, the direct voltage after the rectification will be through resistance two and triode to electrochemical capacitor charging, energy storage.This moment, triode was in reverse magnifying state.

Switch is pulled to the position 2 just open it again when closing again, the direct voltage after the rectification is added on triode and the electrochemical capacitor through resistance one and resistance two.When electric current reaches the switching current of triode, the triode conducting.At this moment, with the controllable silicon triggering and conducting, lamp is still bright through triode, resistance four and resistance three for electric current.But when the controllable silicon conducting, the triode both end voltage descends immediately and is turned off.Next week is when arriving, and triode is not only conducting again----triggers controllable silicon conducting----triode again but also turn-off.The actual on off state that is in of triode, and every switch is once, the electrochemical capacitor discharge is released can be once.Be reduced to can not trigger controllable silicon the time until the capacity of electrochemical capacitor, lamp is turn-offed at last.This section period, promptly lamp is by the time of time delayed turn-off.The length of this time can be regulated by the isoparametric change of electrochemical capacitor amount of capacity, makes it to satisfy the needs that the passerby passes corridor and even which floor corridor.This circuit is simple, sensitive, cost is low.

Task of the present utility model comes to this and finishes.

The utility model provide a kind of simple and practical, sensitive reliable, with low cost, be easy to popularize, turn off delay time switch that delay time is adjustable.Compare with the like product in past, its cost drops to 15-30% in the past.It can be widely used in corridor lighting or other needs in the appliance switch control of turn off delay time.

Below in conjunction with actual example and the accompanying drawing thereof executed the utility model is done further explanation.

Fig. 1 is the structural representation of the utility model embodiment 1.

Fig. 2 is the schematic diagram of the turn off delay time circuit of embodiment 1.

Shown in Figure 1, embodiment 1 is made of switch body structural member 1 and turn off delay time circuit 2.This is a kind of wall type hand switch.Have box like structure 3 on the switch body structural member 1, the printed substrate 4 of interior dress turn off delay time circuit 2, outer button box lid 5.The operating key 6 of switch is two.

Shown in Figure 2, turn off delay time circuit 2 is made of bridge rectifier 7, controllable silicon 8, resistance 1, resistance 2 10, resistance 3 11, resistance 4 12, two-position switch 13, triode 14, electrochemical capacitor 15 and voltage-stabiliser tube 16.0 one of the contacts of two-position switch 13 can with contact A short circuit, another one can with contact B short circuit, be respectively applied for unlatching, the multiple corridor lamp of closing again.The time-delay of turn off delay time circuit 2 is used for the people and passes through corridor.The people earlier with it by bright to A position lamp, again with it by can passing through to the B position, the utility model can be closed lamp automatically and be extinguished then.

As switch is replaced with acoustic control, can open with voice control earlier, turn-off with voice control more after a while.The pedestrian just can borrow time-delay to step on the building.Otherwise when floor was higher, voice was turned off the light because of too far away and uncontrollable its.

Embodiment 1 cost only is 20% of past like product, and cost is low, and is simple and practical, can be widely used in the switch control of resident's corridor lighting and other occasion electrical equipment.

Claims (2)

1, a kind of turn off delay time switch, it is made of switch body structural member and the turn off delay time circuit that is installed on the switch body structural member, it is characterized in that having box like structure on the said switch body structural member, fastening dressing has the printed substrate that turn-offs delay circuit in the box like structure, and lid also is being fastened on the box like structure.

2, according to the described turn off delay time switch of claim 1, it is characterized in that said turn off delay time circuit is by the bridge rectifier with the civil power input, and be connected in controllable silicon on bridge rectifier two outputs, be connected in resistance one and resistance two on the silicon controlled anode successively, and be connected in resistance three and the resistance four that silicon controlled control is extremely gone up, be installed in the two-position switch on the output contact of contact between resistance one and the resistance two and resistance three and resistance four, the base stage triode that emitter links to each other with the output contact of resistance three that links to each other with resistance two output contacts, and be connected in the collector electrode of triode and electrochemical capacitor and the voltage-stabiliser tube between the silicon controlled negative electrode constitutes.

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