CN2175549Y

CN2175549Y - Photo control automatic curtain machine

Info

Publication number: CN2175549Y
Application number: CN 93245836
Authority: CN
Inventors: 李青天
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-25
Filing date: 1993-11-25
Publication date: 1994-08-31
Anticipated expiration: 2003-11-25

Abstract

The utility model relates to an automatic control device for opening and closing a curtain, which is composed of an integral structure which is composed of a base, an electrical motor, a speed-reducing wheel, an output wheel and a control circuit. The output wheel is also sheathed with a bump and a limiting frame; a touch switch of a relay in the control circuit is arranged on the edge of the output wheel; a curtain rope is fixed with two presetting shifting blocks; the bump is toggled by the shifting blocks to switch on the touch switch; the direction commutation of the electrical motor is accomplished by transforming a relay contact. In the utility model, the control circuit is simplified by the installation of mechanical reversing controlling mechanism to make the utility model operate reliably and accurately.

Description

Photo control automatic curtain machine

The utility model relates to the control device that a kind of curtain opens and closes, the light-operated automatic executing agency of specifically a kind of curtain.

At present, the version of light-operated automatic curtain machine is a lot, and identical point is made up of the motor, ratio wheel, output wheel and the control circuit that are fixed on the pedestal substantially.But existing apparatus is unreasonable because of the structure of executing agency, causes the control circuit complex structure, and reliability reduces.Mostly motor is that strength is little by 3 volts of DC-voltage supplies exporting in the control circuit in addition, is difficult for driving curtain, and practicality is relatively poor, so still rarely found feasible automatic curtain machine on the market.

The purpose of this utility model just provides a kind of simple in structure, practical light-operated window curtain driving mechanism, to satisfy the needs of the actual use of people.

The utility model is achieved in that on the light-operated window curtain driving mechanism of being made up of the motor, ratio wheel, output wheel and the control circuit that are fixed on the pedestal, on output wheel, also be with projection and position-limited rack, relay contact-making switch in the control circuit is arranged on the edge of output wheel, is enclosed within to be fixed with two on the curtain rope on the output wheel and to preset shifting block.Key point of the present utility model is to be provided with a cover by presetting electromechanics that shifting block and projection, limit switch the form executing agency of commutating, and institute's made component all combines with existing parts, therefore but both simplified control circuits does not increase small product size again, has realized reliability service.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is that output wheel A-A partly is to cutaway view.

Fig. 3 is the electrical schematic diagram of control circuit.

As shown in Figure 1, 2, pedestal 1 is the bar shaped plank, and micro machine 2, ratio wheel 3 and output wheel 4 are all fixed on it.All there is belt to connect between motor, ratio wheel and the output wheel 4.Projection 5 is a fan-shaped connecting lever that hollow shaft is arranged and join with axle, and the projection hollow sleeve is on axle 10, and output wheel 4 is enclosed within on the hollow shaft.Position-limited rack 6 is prize platform shape shelf, and the bottom is fixed on the pedestal by screw, and the top center borehole jack is lived the semiaxis on the projection hollow shaft, and middle step part is limited in projection 5 can only rotate in the one side.What relay contact-making switch 7 was fixed on output wheel 4 has projection 5 one sides, and makes the projection connecting lever can touch switch, realizes switch control.Projection 5 is promoted by the shifting block 9 that presets fixing on curtain rope 8.

Control circuit as shown in Figure 3, be that two terminals in motor M connect a group of relay J respectively and often open and normally-closed contact, relay coil one end ground connection, the other end connects power supply through contact-making switch K, normally-closed contact J1 and normally opened contact J4 connect power supply respectively, normally opened contact J2 and normally-closed contact J3 connect the positive pole of controllable silicon SCR 1, SCR2 respectively, after the control utmost point of controllable silicon SCR 1 connects one group of parallel resistor R2 and capacitor C 1, receive the emitter stage that photoelectricity receives triode T1.The emitter stage of T1 and triode T2 base stage are joined, and the emitter stage of T2 connects power supply after resistance R 3, and the colelctor electrode of T2 and the controllable silicon SCR 2 control utmost points join.

The course of work of this machine is, when projection 5 (is stirred by presetting shifting block 9 during in position shown in Figure 1, so presetting shifting block 9 physical locations is the upper edges that are in projection 5), contact-making switch 7 disconnects, be that K disconnects among Fig. 3, the relay outage, normally-closed contact J1, J3 remain closed normality, and this moment, supply voltage arrived the positive pole of controllable silicon SCR 2 through J1, M and J3, but was the daybreak state this moment, photoelectricity receives triode T1 conducting, the base potential of triode T2 is higher than the emitter stage current potential, and T2 ends, and the control electrode potential of SCR2 is zero, not conducting of SCR2, motor does not change.The same day is gradually black, the light deepening, and T1 is progressively become by conducting and ends, and the base potential of T2 is descended.When this current potential was lower than T2 emitter stage current potential, the T2 conducting triggered the SCR2 conducting, and motor counterclockwise starts, and drove curtain rope and curtain and moved to left closed window.Fixing when presetting shifting block and arriving projection 5 lower edges on running to down the curtain rope, promptly drive projection 5 and rotate counterclockwise, connecting lever touches contact-making switch 7, the K closure, the relay J coil gets electric, and normally-closed contact J1, J3 disconnect, make the motor stall, finish the operation of drawing curtain.Normally opened contact J2, J4 closure make motor M oppositely connect power supply at this moment, but because of controllable silicon SCR 1 not conducting, so motor does not rotate.When at day, light strengthens, and the T1 conducting is behind the C1R2 of parallel connection, make controllable silicon SCR 1 conducting, the rotation of motor clockwise direction drives curtain rope and curtain and moves to right, and draws the curtain apart, the shifting block that presets on last curtain rope arrives projection 5 upper edges, and stir its rotation and disengage switch, the side makes the motor stall, finishes the operation of drawing the curtain apart.Power supply can be exported 12 volts of DC voltages and drive motor, and need not voltage stabilizing with 220 volts of civil powers through step-down rectifier, therefore can spur big heavier curtain.If on two controllable silicons and connect short switch, can be by switching manipulation, the curtain under the Artificial Control abnormal condition opens and closes.

The utility model has been simplified control circuit by the mechanical commutation controlling organization is set, and makes device reliable, accurate, has improved practicality, is suitable for popularization.

Claims

1, a kind of light-operated automatic curtain machine, form by the motor 2, ratio wheel 3, output wheel 4 and the control circuit that are fixed on the pedestal 1, it is characterized in that also being with on the output wheel 4 projection 5 and position-limited rack 6, relay contact-making switch 7 in the control circuit is arranged on the edge of output wheel 4, is enclosed within to be fixed with two on the curtain rope 8 on the output wheel 4 and to preset shifting block 9.

2, light-operated automatic curtain machine according to claim 1, it is characterized in that control circuit is that two terminals in motor M connect a group of relay J respectively and often open and normally-closed contact, relay coil one end ground connection, the other end connects power supply through contact-making switch K, normally-closed contact J1 and normally opened contact J4 connect power supply respectively, normally opened contact J2 and normally-closed contact J3 connect controllable silicon SCR 1 respectively, the positive pole of SCR2, after the control utmost point of controllable silicon SCR 1 connects one group of parallel resistor R2 and capacitor C 1, receive the emitter stage that photoelectricity receives triode T1, the emitter stage of T1 and triode T2 base stage are joined, the emitter stage of T2 connects power supply after resistance R 3, the colelctor electrode of T2 and the controllable silicon SCR 2 control utmost points join.