KR102311220B1 - Electric Roll blind - Google Patents

Abstract

The roll blind according to the present invention includes a driving unit provided on the upper side of a window frame to generate a driving force, a winding roll coupled with the driving unit to rotate according to the operation of the driving unit, and the winding roll by the operation of the driving unit. is coupled to the lower end of the screen, and a lower bar guided by guide rails provided on both frames of the window frame, and at both ends of the lower bar. A wire connected to pull the lower bar downward, and a tension adjusting device installed on the lower frame of the window frame to adjust the tension generated in the wire,
The tension adjusting device includes a guide rod fixed to the lower frame, left and right guide frames guided by the guide rod to move in the left and right directions, and rotatably installed in the left and right guide frames, respectively, to wind the wire. A plurality of left and right rollers and an elastic spring provided between the left and right guide frames to elastically support the left and right guide frames to each other.

Description

Electric roll blind

The present invention relates to a roll blind, and more particularly, to an electric roll blind capable of maintaining uniform tension on both sides of the screen to prevent distortion of the screen and prevent product failure.

Recently, there are many buildings with a curtain wall structure with a beautiful appearance in commercial buildings and the like. The curtain wall structure has the advantage of having a light weight and a beautiful appearance, but has a disadvantage in that heat loss is high because glass is used a lot. In a building, windows are the most thermally vulnerable part, and in particular, an increase in glass area has a greater impact on building energy consumption.

On the other hand, in order to protect privacy along with a shading effect from the outside, recently, a lot of shading devices are used in windows of offices, homes, or restaurants. In such a awning device, a roll blind or roll screen made of a single fabric awning in the awning, a plurality of plate-shaped slits in aluminum, plastic or wood, are horizontally arranged for the awning, and the Venetian blinds and skylights, slanted windows, There is a fabric tension system, which refers to an applied form of a roll screen applied to a curved window, and the like.

The shading device manually operated among such conventional shading devices includes an upper operating bar that is wound by fastening the upper end of the wire or screen connecting the awning slit, a pulley fastened to one side of the upper operating bar to rotate the upper operating bar, and , is combined with the pulley and consists of a ball chain that rotates the pulley, and when the user manually pulls one of the ball chains, the pulley and the operation bar rotate while winding or unwinding the screen or wire to adjust the lower position of the awning.

However, when manually raising/lowering the screen or awning slit, the user has to pull the ball chain several times, which is cumbersome. It caused problems such as poor fastening state.

In order to solve the problems of the conventional manual shading system and use in the fabric tension system, an electric shading device for elevating / lowering the awning using a motor has recently been developed and commercialized.

However, in the conventional electric shading device, a device for adjusting the tension is inserted into both rails to adjust the tension, but when a failure occurs in one part of the tension adjusting device inserted into the rails on both sides, the screen is tilted to one side and the screen is wrinkled or , when the screen is raised or lowered by the motor in a state where the screen is tilted to one side, there is a problem in that the electric shading device malfunctions.

In addition, the tension control device is mainly provided on both sides of the window frame, there was a problem that the space for the tension control device to be inserted into the frame on both sides of the window is insufficient.

In addition, there is a problem in that it is difficult to additionally install such a tension control device without removing the previously installed roll blind.

Republic of Korea Patent Publication No. 10-1502754 (Announcement on Mar. 16, 2015)

The present invention provides an electric roll blind that has a simple structure and can automatically adjust the tension on both sides of the screen.

In addition, it provides an electric roll blind that has a simple structure and can reduce maintenance costs.

In addition, it provides an electric roll blind that is easy to install not only when a blind is newly installed on a window but also a tension control device to an existing blind installed.

In addition, even if installed on the outdoor side of the building, the screen is firmly fixed to provide an electric roll blind that can withstand wind loads.

In addition, to provide an electric roll blind that can respond to an external environment such as wind when installed outdoors, and can reduce the external awning by reducing the installation cost.

In order to achieve the above object, a roll blind according to an aspect of the present invention includes a driving unit provided on an upper side of a window frame to generate a driving force, a winding roll coupled to the driving unit to rotate according to the operation of the driving unit, and the driving unit A screen that selectively blocks sunlight flowing into the windows and doors through the operation of winding or unfolding the winding roll by the operation of A lower bar to be guided, a wire connected to both ends of the lower bar to pull the lower bar downward, and a tension adjusting device installed in the lower frame of the window frame to adjust the tension generated in the wire, the tension The adjusting device includes a guide rod fixed to the lower frame, left and right guide frames guided by the guide rod to move in the left and right directions, and a plurality of rotatably installed in the left and right guide frames, respectively, for winding the wire. An elastic spring provided between the left and right rollers and the left and right guide frames to elastically support the left and right guide frames may be provided.

In addition, the left and right rollers are provided on the outdoor side with respect to the guide rod, respectively, and first rollers for winding a wire connected to one end of the lower bar, and the inner side with the guide rod as the center of the lower bar It may be provided with second rollers for winding the wire connected to the other end of the.

In addition, first and second guide rollers for guiding the wire connected to both ends of the lower bar to be wound around the first and second rollers, and a first for supporting the first and second guide rollers to rotate while moving back and forth , may further include two support rods.

In addition, the first and second rollers may be formed in at least 14 or more.

In addition, a displacement limiting nut provided outside the left and right guide frames to limit displacement of the left and right guide frames from moving outward may be further provided.

In addition, the plurality of left and right rollers may be formed of engineering plastic.

According to the roll blind according to the present invention, the tension between both sides of the screen is automatically adjusted, so that the separation between the screen wound on the take-up roll and the power transmission means can always be maintained in a tight state.

In addition, since the structure of the tension control device is simple, the manufacturing cost of the roll blind can be reduced, and the installation cost and maintenance cost can be reduced.

In addition, even if it is installed on the outdoor side of the building, the screen can be firmly fixed, so it can withstand wind loads.

1 is a perspective view of an electric roll blind according to an embodiment of the present invention.
Figure 2 is a front view of the electric roll blind shown in Figure 1;
3 is a detailed view of the guide roller supporting the wire to be connected to the tension control device.
4 is a perspective view of a tension adjusting device installed in the roll blind driving device shown in FIG. 1 ;
5 is a plan view of the tension control device shown in FIG.
Figure 6 is an operation diagram showing the operation of the electric roll blind according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it goes without saying that the present invention is not limited to these embodiments and may be modified in various forms.

In the drawings, in order to clearly and briefly describe the present invention, the illustration of parts irrelevant to the description is omitted, and the same reference numerals are used for the same or extremely similar parts throughout the specification. In addition, in the drawings, the thickness, width, etc. are enlarged or reduced in order to make the description more clear, and the thickness, width, etc. of the present invention are not limited to the bars shown in the drawings.

And, when a certain part "includes" another part throughout the specification, other parts are not excluded unless otherwise stated, and other parts may be further included. Also, when a part of a layer, film, region, plate, etc. is said to be “on” another part, this includes not only the case where the other part is “directly on” but also the case where another part is located in the middle. When a part, such as a layer, film, region, plate, etc., is "directly above" another part, it means that no other part is located in the middle.

Hereinafter, an electric roll blind according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an electric roll blind according to an embodiment of the present invention, FIG. 2 is a front view of the electric roll blind shown in FIG. 1, and FIG. 3 is a guide roller supporting the wire to be connected by a tension adjusting device. It is also

1 and 2, the electric roll blind according to an embodiment of the present invention is provided on the upper side of the window frame 10 and includes a driving unit 110 that generates a driving force, and is coupled to the driving unit 110 to generate a driving unit ( A screen that selectively blocks sunlight entering the windows and doors through the winding roll 120 rotating according to the operation of 110 and the winding or unfolding operation on the winding roll 120 by the operation of the driving unit 110 . 130 and the lower bar 140 coupled to the lower end of the screen 130 and guided by guide rails 13 provided on both sides of the frame 12 of the window frame 10, and the lower bar The wire 150 that is connected to both ends of the 140 and pulls the lower bar 140 downward, is installed in the lower frame 14 of the window frame 10, and the tension generated in the wire 150 A tension adjusting device 200 for adjusting is provided.

The window frame 10 has a rectangular shape as a whole. It includes an upper frame 11 at the upper side, both sides of the frame 12 provided with guide rails 13 for guiding both ends of the lower bar 140 , and a lower frame 14 at the lower side.

The driving unit 110 may be formed of a motor or the like that generates a driving force, and a switch 111 for rotating the driving unit 110 forward and reverse may be provided in some of the frames 12 on both sides of the window frame 10 .

The winding roll 120 is coupled to the driving unit 110 to rotate forward and reverse by the power generated by the driving unit 110 . When the winding roll 120 is coupled to the end of the screen 130 and the winding roll 120 rotates, the screen 130 is wound or unwound to rise or fall.

It is coupled to the lower end of the screen 130 and the screen 130 for selectively blocking the sunlight flowing into the window through the operation of winding or unfolding on the winding roll 120 by the operation of the driving unit 110, and , a lower bar 140 guided by guide rails 13 provided on both sides of the frame 12 of the window frame 10, and the lower bar 140 connected to both ends of the lower bar 140 It includes a wire 150 pulling downward, and a tension adjusting device 200 installed on the lower frame 14 of the window frame 10 to adjust the tension generated in the wire 150 .

Meanwhile, referring to FIG. 3 , first and second guide rollers 161 and 171 for guiding the wire 150 to be connected to the tension adjusting device 200 are provided.

Wires are respectively coupled to both ends of the lower bar 140 , and the first and second guide rollers 161 and 171 guide the wires 150 connected to both ends of the lower bar 140 to be connected to the tension adjusting device 200 . do.

To this end, at both lower corners of the window frame 10, the first and second guide rollers 161 and 171 support the rotation of the first and second support rods 162 and 172, and the first and second support rods 162 and 172 support the first and second support rods. 1 and 2 support brackets (163.173) are provided.

When the screen 130 is wound on the winding roll 120, the wire 150 connected to both ends of the lower bar 140 can also move indoors or outdoors because of the thickness of the screen 130 wound on the winding roll 120. As the wire 150 moves to the indoor or outdoor side, the first and second guide rollers 161 and 171 supporting the wire 150 are also guided by the first and second support rods 162 and 172 to move indoors or outdoors. can Accordingly, the first and second guide rollers 161 and 171 may stably support the wire 150 .

On the other hand, the tension control device 200 serves to keep the screen 130 flat when the screen 130 is wound or unwound on the winding roll 120 . The tension control device 200 according to the present embodiment can be installed without thickening the thickness of the frame 12 on both sides by being installed on the lower frame 14 of the window frame 10 . In addition, it can be installed using an existing electric roll blind without disassembling the previously installed electric roll blind.

Hereinafter, the tension adjusting device 200 for adjusting the tension will be described in more detail.

FIG. 4 is a perspective view of a tension adjusting device installed in the roll blind driving device shown in FIG. 1 , and FIG. 5 is a plan view of the tension adjusting device shown in FIG. 4 .

Referring to FIG. 4 , the tension adjusting device 200 includes a guide rod 210 fixed to the lower frame 14 , and left and right guide frames guided by the guide rod 210 to move in the left and right directions ( 230 and 240), a plurality of left and right rollers 250 and 260 that are rotatably installed in the left and right guide frames 230 and 240, respectively, and wind the wire 150, and the left and right guide frames 230 and 240. It is provided with an elastic spring 270 for elastically supporting the left and right guide frames 230 and 240 to each other.

The guide rod 210 is installed to be spaced apart from the lower frame 14 by a predetermined distance by a support bracket 215 fixed and supported on the lower frame 14 of the window frame 10 . A screw thread is formed on the outer circumferential surface of the guide rod 210 so that a displacement limiting nut 280, which will be described later, moves in the left and right direction.

The left and right guide frames 230 and 240 each have an accommodating space S for accommodating the rollers 250 and 260 in the center, and through holes 231,241 through which the guide rod 210 passes are provided on both sides thereof. Meanwhile, rotation shafts 232 and 242 are provided on the front and rear surfaces so that the rollers 250 and 260 can rotate.

The left and right guide frames 230 and 240 are rotatably installed, respectively, and a plurality of left and right rollers 250 and 260 for winding the wire 150 are provided.

The left rollers 250 are provided on the outdoor side with the guide rod 210 as the center, and include first rollers 251 for winding a wire 150a connected to one end of the lower bar 140 , and the guide rod 210 . ) is provided on the indoor side and provided with second rollers 252 for winding the wire 150b connected to the other end of the lower bar 140 .

The right rollers 260 are provided on the outdoor side with the guide rod 210 as the center, the first rollers 261 winding the wire 150a connected to one end of the lower bar 140 , and the guide rod 210 . ) is provided on the indoor side and provided with second rollers 262 for winding the wire 150b connected to the other end of the lower bar 140 .

In this embodiment, the wire 150a connected to the left end of the lower bar 140 is wound around the first rollers 251 of the left rollers 250 and the first rollers 260 of the right rollers 260 . The wire 150b connected to the right end of the lower bar 140 was wound around the second rollers 252 of the left rollers 250 and the second rollers 262 of the right rollers 260 . However, on the contrary, the wire 150a connected to the left end of the lower bar 140 is wound around the second rollers 252 of the left rollers 250 and the second rollers 262 of the right rollers 260, and the lower end The wire 150b connected to the right end of the bar 140 may be wound around the first rollers 251 of the left rollers 250 and the first rollers 261 of the right rollers 260 .

Meanwhile, since the wires 150a and 150b are made of a material having rigidity, the left and right rollers 250 and 260 supporting the wires 150a and 150b are preferably made of engineering plastic.

Meanwhile, an elastic spring 270 is provided between the left and right guide frames 230 and 240 to elastically support the left and right guide frames 230 and 240 to each other.

The elastic spring 270 is provided between the left and right guide frames 230 and 240 to support the inner ends of the left and right guide frames 230 and 240 to each other. In addition, the guide rod 210 is positioned inside the elastic spring 270 . Therefore, the elastic spring 270 is guided to the guide rod 210 without being separated, and contracts or expands.

On the other hand, the elastic force or the length of the elastic spring 270 should be appropriately adjusted. When the lower bar 140 provided at the lower end of the screen 130 rises, the elastic spring 270 increases the distance between the left and right guide frames 230 and 240, and the elastic spring 270 is compressed. At this time, since the distance between the left and right rollers 250 and 260 also increases, the length of the wire 150 positioned between the left and right rollers 250 and 260 is reduced.

On the contrary, the elastic spring 270 is compressed by the elastic restoring force when the lower bar 140 provided at the lower end of the screen 130 descends. Accordingly, the distance between the left and right guide frames 230 and 240 increases. At this time, since the distance between the left and right rollers 250 and 260 increases, the length of the wire 150 positioned between the left and right rollers 250 and 260 increases.

On the other hand, at least 14 first and second rollers 251,261,522,262 are provided, respectively. In general, the height of the screen 130 installed in the window frame 10 is at least 1M, and the lower bar 140 provided at the lower end of the screen 130 also moves in the vertical direction by at least 1M. In this way, since the lower bar 140 moves up and down by at least 1M, the wires 150a and 150b respectively connected to both ends of the lower bar 140 must also have a length of at least 1M.

As such, in order to accommodate the wire 150 of at least 1M between the left and right rollers 250 and 260, the first and second rollers 251,261,522,262 are better as the number increases. However, since the widths of the left and right guide frames 230 and 240 are also limited, in this embodiment, 14 first and second rollers 251,261,522,262 are formed each.

The wire 150a connected to the left end of the lower bar 140 is wound by the first rollers 251 provided in the left guide frame 230 and the first rollers 261 provided in the right guide frame 240 . The first rollers 251 and 251 provided in the left guide frame 230 and the right first rollers 251 provided in the left guide frame 230 are assuming that the screen 130 moves 1M (100cm) in the vertical direction because there are 14 first rollers 251,261, respectively. The distance between the first rollers 261 provided in the guide frame 240 moves only 3.57 cm when 100 cm is divided by 28.

In addition, the distance between the second rollers 252 provided in the left guide frame 230 and the second rollers 262 provided in the right guide frame 240 is also the distance between the first rollers 251,261 and move the same

Accordingly, the elastic spring 270 for elastically supporting the left and right guide frames 230 and 240 to each other also has a compressed or expanded length of only 3.57 cm.

Meanwhile, a displacement limiting nut 280 provided outside the left and right guide frames 230 and 240 to limit the displacement of the left and right guide frames 230 and 240 outward is provided. When the displacement limiting nut 280 is positioned where the guide frames 230 and 240 are positioned when the elastic spring 270 is fully expanded, the guide frames 230 and 240 are no longer outside where the nut 280 is positioned. unable to proceed

In the above, the electric roll blind according to an embodiment of the present invention has been described. Hereinafter, the operation of the above-described electric roll blind will be described.

6 is an operation diagram showing the operation of the electric roll blind according to an embodiment of the present invention. Hereinafter, an operation of the electric roll blind will be described with reference to FIG. 6 .

First, when the user operates the switch 111 to raise the screen 130 , the driving unit 110 rotates in the direction in which the winding roll 120 winds the screen 130 . Accordingly, the lower bar 140 provided at the lower end of the screen 130 also rises. The wires 150a and 150b connected to both ends of the lower bar 140 also rise. As the wires 150a and 150b rise, the distance between the first rollers 251,261 and the distance between the second rollers 252 and 262 decrease. Accordingly, the elastic spring 270 elastically supported between the guide frames 230 and 240 is contracted to maintain the elastic force.

Conversely, when the user operates the switch 111 to lower the screen 130 , the driving unit 110 rotates in the direction in which the winding roll 120 unwinds the screen 130 . Accordingly, the winding roll 120 unwinds the screen 130 , and the lower bar 140 provided at the lower end of the screen 130 also descends. The wires 150a and 150b connected to both ends of the lower bar 140 also descend. As the wires 150a and 150b descend, the contracted elastic spring 270 elastically supported between the guide frames 230 and 240 expands. Accordingly, the distance between the first rollers 251,261 and the distance between the second rollers 252 and 262 increases, and the distance between the first rollers 251,261 and the second rollers 252 and 262 between the wire 150a, 150b) will exist.

According to this operation, the tension applied to the wires 150a and 150b is automatically adjusted. Accordingly, the wires 150a and 150b generate tension in a direction in which the lower bar 140 provided at the lower end of the screen 130 is pulled, and accordingly, the screen 130 can always be maintained in a taut state.

In the above, the electric roll blind according to an embodiment of the present invention has been described. However, the features, structures, effects, etc. as described above are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

10: window frame 110: drive unit
120: winding roll 130: screen
140: lower bar 150: wire
200: tension control device 210: guide rod
230, 240: guide frame 250,260: left and right rollers
270: elastic spring

Claims (6)

a driving unit provided on the upper side of the window frame to generate a driving force;
a winding roll coupled to the driving unit to rotate according to the operation of the driving unit;
a screen for selectively blocking sunlight flowing into windows and doors through an operation of winding or unfolding the winding roll by the operation of the driving unit;
a lower bar coupled to the lower end of the screen and guided by guide rails provided on both frames of the window frame;
a wire connected to both ends of the lower bar and pulling the lower bar downward;
and a tension adjusting device installed on the lower frame of the window frame to adjust the tension generated in the wire,
The tension adjusting device is fixed to the lower frame and is rotatably installed in a guide rod having a thread formed on an outer circumferential surface, left and right guide frames guided by the guide rod to move in the left and right directions, and the left and right guide frames, respectively. and a plurality of left and right rollers for winding the wire, an elastic spring provided between the left and right guide frames to elastically support the left and right guide frames, and outside of the left and right guide frames. and a displacement limiting nut for limiting the displacement of the left and right guide frames moving outward, and for adjusting the elastic force of the elastic spring by moving left and right along the thread provided on the guide rod;
The left and right rollers are provided on the outdoor side with respect to the guide rod, respectively, and first rollers for winding a wire connected to one end of the lower bar, and the other rollers provided on the indoor side with the guide rod as the center to the other side of the lower bar. and second rollers for winding the wire connected to the stage,
The first and second rollers are at least 14,
First and second guide rollers guiding the wire connected to both ends of the lower bar to be wound around the first and second rollers, and first and second guide rollers respectively supporting the first and second guide rollers to rotate while moving back and forth Roll blind, characterized in that it further comprises a support bar. delete delete delete delete The method of claim 1,
The plurality of left and right rollers are roll blinds, characterized in that formed of engineering plastic.

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