CN87208242U

CN87208242U - Electric curtain with driven wheel controlled by tension

Info

Publication number: CN87208242U
Application number: CN 87208242
Authority: CN
Inventors: 王德坤
Original assignee: Individual
Current assignee: Xue Weiming
Priority date: 1987-05-18
Filing date: 1987-05-18
Publication date: 1988-04-27

Abstract

The utility model discloses an electric curtain with a driven wheel controlled by tension, which is adapted for places of newly built houses, hotels, meeting places, etc. The electric curtain with a driven wheel controlled by tension comprises a pole support, a compressed spring or a tension spring, a bracket, a bottom board, a minor axis, a driven wheel, and a wheel shaft. Under the influence of the temperature and the humidity of the environment, when the ropes of the curtain slack, the pole support drives the driven wheel to deflect a certain amount to the pressure direction of the compressed spring or to the direction of traction of the tension spring with the minor axis as the fulcrum, and the ropes are tightened. Contrarily, when the ropes are too tight, the driven wheel deflects a certain amount to the opposite direction, the rope tension reaches a new balance, and the normal running of the electric window curtain is guaranteed.

Description

Electric curtain with driven wheel controlled by tension

The utility model relates to a kind of improved electrically driven curtain, particularly a kind of electrically driven curtain that can make rope continue to keep certain tension force.

In the transmission mechanism of existing electrically driven curtain, driven pulley generally is made up of the wheel shaft that pulley is housed, support and base, and support or base are fixed on the wall or on the curtain cover.It is simple in structure, be easy to make.This curtain uses the long period, and rope often takes place to relax because of being subjected to the influence of temperature, humidity, and the blank run of driving wheel meeting sometimes influences the curtain pulling, makes troubles to the user.

Task of the present utility model provides a kind of improved electrically driven curtain, and it can make the certain tension force of the long-term maintenance of rope.

Above-mentioned task is finished as follows: load onto a tension mechanism in driven pulley one side, it is made up of stage clip or extension spring, pole, support, base plate, minor axis, driven pulley and wheel shaft, one end of stage clip or extension spring links to each other with pole, the other end is fixed on the base plate, pole and support are assembled into one by minor axis, and the wheel shaft that driven pulley is housed is fastened on the end of pole.In environment temperature, when humidity changes, rope can the time pine when tight.When rope when pine, pole drives driven pulley, and to be fulcrum with the minor axis a certain amount of towards the direction of pull deflection of the pressure direction of stage clip or extension spring, and rope is tensioned.When the rope tension, at this tension force during greater than the pressure of the pulling force of extension spring or stage clip, pole then drive driven pulley with the minor axis be fulcrum to above-mentioned rightabout deflection certain angle, rope tension reduces, reason rope tension and increase the load of driving wheel not, and driving wheel is stuck.The tension force of rope and the pulling force of extension spring or reach a new balance with the pressure of stage clip make rope remain certain tension force.

Under environment temperature, humidity effect, the rope of electrically driven curtain can relax or tensioning, because driven pulley is equipped with tension mechanism, can make rope keep certain tension force, overcome the bad phenomenon that rope skids or driving wheel is stuck on drive, guaranteed the normal operation of electrically driven curtain.

Below with reference to accompanying drawing the utility model is described in further detail.

Fig. 1 is a kind of structural representation that adopts the extension spring tension mechanism of the utility model.

Fig. 2 is a kind of structure diagram that adopts the stage clip tension mechanism.

Fig. 3 is a fitting arrangement of the present utility model.

Fig. 4 is electric control theory figure of the present utility model.

See figures.1.and.2, pole (9) is fastened on minor axis (6) with nut, spring washer and goes up the composition one, can also be with the way of casting pole (9), minor axis (6) cast solid.Minor axis (6) is contained between support (11) and the base plate (12) flexibly, adopt be threaded, riveted joint or welding method be support (11) and base plate (12) attaching.Under the active force of stage clip (7) or extension spring (10), pole (9) can be that fulcrum direction deflection to the left and right is a certain amount of with minor axis (6).The termination of pole connects with sliding being equipped with of wheel shaft (8) with the fastening wheel shaft of nut (8), driven pulley (5), and axle head is spacing with split pin.

In the present embodiment, the active turbine (15) among Fig. 3 is made up of driving wheel (1), speed changer (2) and dc motor (3), is loaded on a side of curtain frame.The driven pulley of belt tension mechanism is contained in the opposite side of curtain frame." I " font guide rail (16) is fixing with rail brackets (13), puts rope (4).Button control case (14) mainly is made up of the transformer among Fig. 4, press button, rectifier, electric capacity, resistance etc.Gear is a double reduction, and by gear or worm and gear speed change, speed ratio is 30:1.Motor among Fig. 4 adopts 28ZY01 type dc motor, and press button can be selected KZJ for use ₂-2W ₂Small-sized uni-directional push-button switch is installed in one of window side or user and thinks that convenience, transformer are 220 volts/9 volts, 5 watts.Four electric currents are formed bridge rectifier greater than 1 ampere 2CP type diode, select the electrolytic capacitor of 470 microfarads/16 volt for use; Resistance is 1 kilo-ohm, 1/8 watt fixed carbon resister.

Claims

1, a kind of by direct current generator, gear, transmission mechanism, the electrically driven curtain that electrical apparatus control system is formed, it is characterized in that a tension mechanism being housed in driven pulley one side, it is by stage clip (7) or extension spring (10), pole (9), support (11), base plate (12), minor axis (6), driven pulley (5) and wheel shaft (8) constitute, one end of stage clip (7) or extension spring (10) links to each other with pole (9), the other end is fixed on the base plate (12), pole (9) is assembled into one with support (11) by minor axis (6), and the wheel shaft (8) that driven pulley (5) are housed is fastened on the end of pole (9).