KR102429983B1 - Electric blind limit switch for window - Google Patents

Abstract

The present invention relates to a limit switch of an electric blind for a window comprising: a central member (310) having an inner groove into which a prismatic rod rotating with a vertical movement operation of a blind is inserted, and a first screw formed on an outer circumferential surface, and rotating together with the prismatic rod; a switch block (320) into which one end of the central member is inserted to rotate; an upper limit switch (S1) provided on a lower surface (322) of the switch block; a lower limit switch (S2) provided on one side surface (324) of a side surface of the switch block into which one end of the central member is inserted; a moving body (330) coupled to an outer circumferential surface of the central member (310) and having a second screw coupled to the first screw and formed on an inner circumferential surface to move linearly in a longitudinal direction of the central member by rotation of the central member; and a guide rod (340) provided alongside the central member at a predetermined interval from the central member, and coupled to one end of the moving body to guide a linear motion of the moving body while limiting rotation of the moving body. As the central member rotates when the blind is lowered, the moving body makes a linear motion along the central member without rotation by the guide rod and moves toward the switch block. Then, when the moving body touches the lower limit switch (S2), a lowering operation of the blind is stopped.

Description

Limit switch of electric blind for windows and doors {ELECTRIC BLIND LIMIT SWITCH FOR WINDOW}

The present invention relates to a limit switch of an electric blind built in a double-layered glass structure, and specifically, the blinds reach the upper and lower points while moving the interlocking door together with a driving device that moves the remotely controllable automatic electric blind up and down. It is about the limit switch technology that stops the operation by cutting off the power supplied to the motor.

In the case of a conventional automatic blind device, in the case of a single-layer glass structure, the blind is fixedly installed on the front upper wall of the window, or in the case of a double-layered glass structure, the blind is installed and used. That is, in the case of double-glazed glass, it is possible to use a built-in blind in the space between the glass and the glass. When a blind device is installed on a single-layer glass structure, power is supplied by connecting the power supply cable plug extending from the blind device to the power supply socket fixed on the wall. Power is supplied to the inside of the double-glazed glass by the operation of the electric unit for blinds fixed adjacently. There is a built-in motor for moving the blind up and down inside the multilayer glass, and the blind up and down operation is made while the motor is driven by the power supplied through the power supply device.

The up and down operation of the blind may be made by manually manipulating the switch by the user, or may be made through communication with an operating terminal such as a smart phone. In addition, by utilizing the recent voice recognition technology, it is also possible to control the blind vertical movement operation through voice.

On the other hand, there is a "remote controllable automatic blind built-in type double-glazed glass window" of Registered Utility Model Publication No. 20-0373326, etc.

Looking at the prior art, it is an automatic blind built-in double-glazed window that is movably installed in a window frame, and is a double-glazed structure in which two sheets of glass are hermetically manufactured with a spacer for the double-glazed glass interposed therebetween. It is embedded in the double-layered glass structure in a state of being suspended from the upper side of the inner space of the double-layered glass structure and the blind electric unit fixed adjacently to the upper side of the double-glazed glass structure and the door frame of the window surrounding the frame of the multi-layered structure. And, an automatic blind that is deployed or recovered by the operation of the blind electric unit is built into the multilayer glass.

In addition, the blind is operated by the rotational force of the motor, and as a configuration for supplying power to the motor, the power supply terminal structure 295a is disposed on the edge of the window frame or the like. In addition, a thin tape-type conductor 295b is attached as an electrical supply wiring to the slide protrusion of the slide rail of the window frame, and the power supply terminal structure 295a is in elastic contact with the thin tape-type conductor to supply power.

However, since the power supply terminal structure 195a according to the prior art is provided on the upper or lower part of the window door frame or the window frame frame, there is a problem that it is not easy to attach and detach in case of failure, and the structure of the power supply terminal structure 195a There was a problem that breakdowns occur frequently because of the complex and many configurations, and repair or replacement time increases in the event of a breakdown.

In addition, as a technology to overcome this, the part in contact with the conductor in the power supply is composed of rollers so that the roller of the window frame and the conductor of the door frame contact each other to supply power, but when the window is opened and closed, the roller rotates while the conductor rotates. I had the skills to come into contact with However, in the case of such a roller-shaped power supply device, as the roller continues to rotate, foreign substances may be adsorbed on the surface of the roller, and the foreign substances are curled up by the roller and interfere with the roller and the conductor, resulting in a momentary power cut. There were often problems.

In addition, in the prior art, power is continuously supplied to the motor even though the blind reaches the upper or lower point in the process of expanding the blind up and down by controlling the blind wirelessly or by wire. There were problems such as

And, when an instantaneous error occurs in the controller for controlling the motor operation that drives the blind, the blind cannot stop and continues to rise, causing problems such as breaking the thread of the blind in the double-glazed glass.

Registered Utility Model Publication No. 20-0373326, "Remote controllable automatic blind built-in double-glazed window"

The present invention is to provide a device for smoothly driving window blinds, and to provide a technology that can automatically stop operation when the blind reaches the top or bottom, and also provides a power supply to the double-glazed glass having a built-in electric blind To provide a stable supply device.

The present invention includes an inner groove into which a prismatic rod that rotates with the vertical movement of the blind is inserted, and a first screw is formed on the outer circumferential surface, the central member 310 being provided to rotate together with the prismatic rod; a switch block 320 into which one end of the central member is rotatably inserted; an upper limit switch (S1) provided on the lower surface 322 of the switch block; a lower limit switch (S2) provided on one side 324 of the side of the switch block into which one end of the central member is inserted; a movable body 330 coupled to the outer circumferential surface of the center member 310 and having a second screw coupled to the first screw formed on the inner circumferential surface to move linearly in the longitudinal direction of the center member by rotation of the center member; A guide rod 340 provided in parallel with the center member at a predetermined distance from the center member and coupled with one end of the movable body to limit the rotation of the movable body while guiding the linear motion of the movable body; As the center member rotates, the movable body moves toward the switch block by linear motion along the center member without rotating by the guide rod, and when the movable body touches the lower limit switch (S2), blind lowering We provide electric blind limit switches for windows that stop working.

The blind further includes an upper limiting member that comes into contact with the upper limit switch during the lifting operation, and as the central member rotates in the opposite direction when the blind is raised, the movable body moves linearly in a direction away from the switch block, and the blind When the upper limit member touches the upper limit switch (S1) of the switch block, the rotation of the center member is stopped and the blind lifting operation is stopped.

It further includes a protrusion contact portion 333 protruding from the outer peripheral surface of the movable body to be in contact with the lower limit switch of the switch block.

The present invention can solve the problem of motor overload by stopping the blind operation at the exact point of the top and bottom of the blind while at the same time allowing the up-and-down movement of the electric blind built in the double-layer glass to operate smoothly by the above structure. .

In addition, the rail (conductor) that supplies power to the blind cannot always be maintained horizontally, but even if the rail is slightly deformed in this way, the contact terminal is automatically activated by the first and second elastic forces of the power supply device of the present invention. As it rotates, it can follow the height of the rail by itself, increasing the reliability of the power supply.

1 and 2 are electric blind limit switches according to the present invention,
3 is a partial detailed view of the limit switch part according to the present invention,
4 is a state in which the lower limit switch of the limit switch according to the present invention operates,
Figure 5 shows a window as an example to which the power supply device according to the present invention can be applied,
Figure 6 shows an example in which the power supply device of the present invention is located in the window system,
7 is a perspective view of the power supply device of the electric blind for windows according to the present invention,
8 is a perspective view of the first power supply constituting the power supply of the electric blind for windows according to the present invention,
9 is a diagram showing a state in which an elastic force is added in the power supply device of the electric blind for windows according to the present invention,
10 is a detailed view of the contact terminal of the power supply device of the electric blind for windows according to the present invention,
11 is an isolated view of the power supply device of the electric blind for windows according to the present invention.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In addition, the terms used are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

1 and 2 are electric blind limit switches according to the present invention, Figure 3 is a partial detailed view of the limit switch according to the present invention, Figure 4 is a state in which the lower limit switch of the limit switch according to the present invention operates, An exemplary view of the blind according to the present invention is shown in FIG. 5 .

First, with reference to FIG. 5, schematically looking at the structure of the electric blind for windows and doors of the present invention, a conductor (C) that is provided on the slide rail (R) of the window frame (F) to supply electricity is provided, and the window and door frame The power supply device 1000 provided in (10) and in elastic contact with the conductor (C) is located. In addition, a motor for operating the blind vertically by receiving power through the power supply device is located inside the window door frame. The blind comes down or goes up by the motor drive, and at this time, it detects whether it has reached the uppermost position or the lowermost position, and the motor stops when the upper and lower ends are reached.

That is, when the blind goes up, the motor stops at the limit switch position disposed at the top position, and the blind does not move upward any more. And when the motor is rotated in reverse, the blind moves downward and is stopped at the lower position by the limit switch disposed at the lowest position. In this way, the blind will only operate between the highest position and the lowest position. In this way, it is possible to solve problems such as the blind thread breaking in the double-glazed glass due to the blind not stopping due to a momentary error of the controller and continuing to rise.

Hereinafter, with reference to FIGS. 1 to 4, the upper and lower limit switches provided in the blind driving device of the present invention will be described. The limit switch according to the present invention is provided inside the window and controls the operation of the driving device for operating the blind up and down to stop the operation when the blind reaches the top or bottom of a predetermined section.

Referring specifically to the limit switch of the present invention with reference to FIGS. 1 to 3 , it includes a central member 310 and a switch block 320 coupled to one end of the central member. An inner groove into which the prismatic rod 400 that rotates with the vertical movement of the blind is inserted is formed in the center member 310, and a first screw is formed on the outer circumferential surface. When the blind moves up and down, the prismatic rod rotates, and accordingly, the central member is also provided to rotate. In addition, one end of the central member is rotatably inserted into the switch block 320 , and an upper limit switch S1 is provided on the lower surface 322 of the switch block. And, a lower limit switch (S2) is provided on one side 324 of the side of the switch block into which one end of the central member is inserted.

A movable body 330 coupled on the outer circumferential surface of the central member 310 to linearly reciprocate in the longitudinal direction of the central member is provided. The movable body has a second screw coupled to the first screw formed on its inner circumferential surface, and as the center member rotates, it moves linearly in the longitudinal direction of the center member. This is because the movable body itself is rotated by the guide rod 340 This is because it is impossibly limited. The guide rod 340 is provided side by side with the center member at a predetermined distance from the center member and limits the rotation of the movable body while in contact with one end of the movable body, thereby guiding the linear motion of the movable body in the longitudinal direction of the center member. . It further includes a protrusion contact portion 333 protruding from the outer circumferential surface of the movable body to be in contact with the switch block lower limit switch, and a guide protrusion (334 in FIG. 3) provided on the movable body and in contact with both side surfaces of the guide rod.

With the above structure, when the blinds built into windows and doors are lowered, the central member rotates according to the lowering of the blinds, and the movable body moves linearly along the central member without rotating by the guide rod. Move towards the switch block. When the protrusion contact part 333 of the movable body 330 comes into contact with the lower limit switch S2, the controller determines that the blind has reached the lower limit point and controls the blind lowering operation to stop. In this way, the lower limit switch operates. Referring to FIG. 4 , a state in which the movable body 330 moves and the protrusion contact part 333 comes into contact with the lower limit switch S2 is shown.

And, when the blind moves upward, the central member rotates in the opposite direction, and accordingly, the movable body moves linearly in a direction away from the switch block. And, when the blind reaches the uppermost point, an upper limiting member (not shown) that comes into contact with the upper limit switch S1 is provided at an appropriate position for the blind. The upper limit member is a member that cooperates with the vertical movement of the blind. When the blind reaches the upper limit point, the upper limit switch S1 is abutted, and various forms are possible. As such, when the upper limit member touches the upper limit switch (S1) of the switch block, the control unit determines that the blind has reached the upper limit point and controls the blind raising operation to stop.

Hereinafter, a power supply device of the present invention will be described.

Referring to FIG. 5 , a window of a building is shown as an example to which the power supply device according to the present invention can be applied. A sliding window 10 installed movably along a slide rail R on a window frame frame having a slide rail R in at least one of the upper and lower portions, and a fixed window 20 installed in a window frame frame without a slide rail Blinds may be installed inside the. The blind can be deployed (moving down or up) by the operation of a motor separately provided inside the double-glazed glass.

6 is a cross-sectional view of the upper side of the double-glazed window with a built-in electric blind, and shows the power supply device to the window frame (F) and the sliding window door frame (20).

A conductor (C) is attached as a conductive conductor as an electrical supply wiring to the slide slot or slide protrusion of the upper slide rail (R) of the window frame (F), and the conductor (C) is attached to the upper portion of the sliding window door frame 10 corresponding to this C) and the power supply device 1000 according to the present invention in elastic contact is provided. When two windows are installed in one window frame, conductors having different polarities of (+) and (-) may be provided in the slide slots on both sides to facilitate power supply to each window.

The power supplied to the motor (not shown) for driving the electric blind (not shown) existing inside the multilayer glass is transmitted from the outside to the conductor (C) of the window frame (F), and the power supply device in contact with the conductor ( 1000) is supplied to the motor.

Referring to FIG. 7 , the power supply device 1000 of the present invention includes a first power supply device 100 and a second power supply device 200 having different polarities of (+) and (-), The first and second power supply devices are coupled to each other using the first and second coupling units 100-1 and 200-1 on the side surfaces.

For a smooth motor operation, it is important to maintain a continuous and stable contact between the conductor C and the power supply device 1000. In particular, in the case of sliding windows, the power supply provided in the door frame of the window can be used even during the sliding process. It is important to maintain good contact with the conductor. The first power supply device 100 and the second power supply device 200 are coupled to each other using a coupling part provided in the center of the side and have the same structural shape for supplying power by contacting the conductor (C).

Referring to FIG. 8 , the first power supply device 100 (hereinafter simply referred to as a 'power supply device') will be described in detail. The first power supply device 100 includes an outer body 110 forming an overall shape, an inner body 120 coupled to an inner side of one side of the outer body, and a rotation that is rotatably coupled to the inner body 120 . and a contact terminal 140 coupled to the upper end of the member 130 and the rotating member to contact the conductor (C).

A wire having one end connected to one side of the contact terminal 140 and the other end connected to the lower member 130 of the rotating member 130 is provided. The power supplied to the contact terminal in contact with the conductor is supplied to the motor through the inside of the power supply device. In the present invention, an elastic member 150 surrounding the electric wire connecting one side of the contact terminal 140 and the lower member of the rotation member 130 is further provided. The elastic member 150 is an insulating member, schematically a cylindrical member having a diameter larger than the diameter of the electric wire, and is a member having elasticity to recover to its original shape when a bending operation is applied in the longitudinal direction, and may be made of rubber or polymer material. can

The rotating member 130 is connected to the inner body 120 and provided to be able to rotate at a predetermined angle while providing an elastic force so that the contact terminal of the end of the rotating member is always in contact with the conductor (C). A torsion spring 160 is provided. The torsion spring is provided at the connection portion between the inner body portion 120 and the rotating member 130, so that the contact terminal 140 always applies an elastic force in a direction in contact with the conductor C. For convenience, this It is called 'first elastic force (T1 in FIG. 8)'.

In order to supply stable power, the contact terminal 140 must be able to be in contact with the conductor C stably, and elastic force for this is important. In the present invention, in addition to the first elastic force, the following second elastic force was further provided.

The second elastic force will be described with reference to FIG. 9 .

The contact terminal 140 is rotatably connected to the rotation shaft 135 of the rotation member 130 . That is, as seen in the figure of FIG. 9 , the contact terminal 140 is rotatable based on the rotation shaft 135 . However, when a force is applied to the upper end specific position (the upper end side of 140) by the conductor in the process of making contact with the conductor C, the contact terminal 140 rotates counterclockwise as seen in the figure. At this time, the contact terminal receives an elastic force to rotate clockwise by the elastic member 150 , which is referred to as a second elastic force (T2 in FIG. 9 ).

If the rotation continues in this way, the same problems as the rollers mentioned in the problems of the prior art may occur. Therefore, in the present invention, the contact terminal 140 is rotated, but only a small predetermined angle is rotated. Through this, the problem caused by only one point of the contact terminal 140 continuously contacting the conductor C is solved, and the problem of continuously rotating like a roller is also solved.

That is, in the present invention, in order to solve the problem caused by only one point of the contact terminal 140 continuously contacting the conductor C, the contact curved surface portion 148 in direct contact with the conductor C at the contact terminal. It allows the contact point to be continuously moved (changed) through the rotation of the contact terminal. However, like the rollers of the prior art, the contact terminal can be rotated only slightly (by a predetermined angle) to prevent rolling rotation, which is achieved by the rotation stopper structure.

Referring to FIG. 10 , the contact terminal 140 of the present invention includes a side coupling portion 144 coupled to a rotation member from a side surface 142 and a rotation stopper concavely recessed into the side surface and formed in an arc shape of a predetermined length. A groove 146 is provided. And, it has a contact curved surface portion 148 forming a curved portion so as to be in contact with the conductor (C). At a location spaced a certain distance from the rotation shaft 135 of the rotation member 130, the projection 137 protrudes from the inner surface (the surface facing the contact terminal) of the rotation member and is located in the rotation stopper groove 146. provided When the contact terminal 140 rotates with respect to the rotation shaft 135 and the protrusion 137 comes into contact with both ends of the rotation stopper groove 146, the rotation is no longer possible and the rotation angle is limited.

Through this, the power supply device provided inside the double-glazed glass of the present invention continuously and stably contacts the conductor to which external power is supplied and the contact terminal, which is the upper end of the power supply device, and the contact position is not fixed to a specific position and sliding windows and doors. Since the structure is continuously changed in a predetermined range by the opening/closing operation of the , stable power supply is possible.

The rail (conductor) supplying power from the electric blind cannot always be kept horizontal, and even if the rail is slightly deformed in this way, the contact terminal is automatically closed by the first and second elastic force of the power supply device of the present invention. As it rotates, it can follow the height of the rail by itself, increasing the reliability of the power supply.

In addition, as shown in FIG. 11 , the first and second power supply devices 100 and 200 of the present invention are coupled to each other using the first and second coupling units 100-1 and 200-1 located on the side surfaces. do. The first and second coupling portions 100-1 and 200-1 are coupled to each other by being fitted, and in the present invention, the interval between them can be adjusted. That is, in the case of constructing a window on site, the structure and size of the window frame have various sizes, so it is necessary to adjust the interval between the first and second power supply devices 100 and 200. In the present invention, considering this, the interval between them occurs. can be adjusted to the appropriate size in the field. This is made possible by adjusting the spacing between them. Since the configuration of the second power supply device 200 is similar to that of the first power supply device 100 described above, a detailed description thereof will be omitted in order to omit the redundant description.

Although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also provided. is within the scope of the

Claims (3)

A center member 310 having an inner groove into which a prismatic rod which rotates with the vertical movement of the blind is inserted, and a first screw is formed on the outer circumferential surface to rotate together with the prismatic rod;
a switch block 320 into which one end of the central member is rotatably inserted;
an upper limit switch (S1) provided on the lower surface 322 of the switch block;
a lower limit switch (S2) provided on one side 324 of the side of the switch block into which one end of the central member is inserted;
a movable body 330 having a second screw coupled to the first screw formed on the inner circumferential surface and coupled to the outer circumferential surface of the central member 310; and
a guide rod 340 provided side-by-side with the center member at a predetermined distance from the center member and in contact with one side of the movable body to limit the rotation of the movable body while guiding the longitudinal linear motion of the movable body; including,
As the center member rotates during blind lowering, the movable body is supported by the guide rod and moves linearly along the longitudinal direction of the center member without rotating to reach the lower limit switch (S2), the blind lowering operation is performed Limit switch of electric blinds for windows, characterized in that it stops. The method of claim 1,
The blind further includes an upper limiting member that comes into contact with the upper limit switch during a lifting operation,
As the center member rotates in the opposite direction when the blind is raised, the movable body moves linearly in a direction away from the switch block, and when the blind upper limit limiting member touches the upper limit switch (S1) of the switch block, the blind lifting operation is stopped Limit switch of electric blinds for windows, characterized in that. The method of claim 1,
a protrusion contact portion 333 protruding from the outer circumferential surface of the movable body and formed to come into contact with the switch block lower limit switch; and
The limit switch of the electric blind for windows and doors, characterized in that it further comprises; a guide projection (334) provided on the movable body and contacting both sides of the guide rod.

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