KR20090056282A

KR20090056282A - Roll screen

Info

Publication number: KR20090056282A
Application number: KR1020070123361A
Authority: KR
Inventors: 하수용
Original assignee: 하수용
Priority date: 2007-11-30
Filing date: 2007-11-30
Publication date: 2009-06-03

Abstract

The present invention relates to a roll screen, wherein the sunshade portion 20 and the light-transmitting portion 22 on the drive shaft rod 6 and the driven shaft rod 8 are connected to the axial rotation between the two brackets (4a, 4b) of the frame (2). Are formed so that both ends of the screen fabric 24 are alternately formed, and between the gear 14 of the drive shaft rod 6 and the gear 16 of the driven shaft rod 8 are idle gears 18. By configuring the connection, it is easy to open and close the screen fabric having the shade and the light emitting portion with a small force.

Description

Roll Screen {ROLL SCREEN}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll screen, and more particularly, to a roll screen having a screen fabric having an elegant appearance and easily adjusting the shading degree of the screen fabric.

Window blocking devices are used for interior decoration as well as privacy protection or light control. There are various types of curtains, verticals, roll blinders, roman shades, tintings, and roll screens, and consumers purchase and install their own products in consideration of their usage, window structure, and taste.

Among them, the roll screen is a window blocking device that controls the height of the screen fabric by rolling or unrolling the screen fabric of the curtain role in a roll form. The roll screen adjusts the shade of the screen by adjusting the screen fabric vertically. For complete shading, the screen fabric should be lowered to the bottom of the window. To completely release the screen fabric, the screen fabric is rolled up to the top of the window. Should give. And if you only want to awning partially, just roll up the screen fabric to any desired location.

However, such a roll screen is inconvenient to pull down the lifting chain several times in order to completely open and shield the screen fabric. In addition, when the window is partially opened, the window blocking part is gradually opened from the lower part to the upper part, so that there is a disadvantage in that it does not meet the user's demand for partial opening of the upper part of the window or partial opening of the side end part or balanced part of the entire fabric.

Accordingly, an object of the present invention is to provide a roll screen having a screen fabric with an elegant appearance and easy to adjust the shade of the screen fabric with a small force.

It is another object of the present invention to provide a roll screen that can quickly lift and lower the screen fabric.

The present invention for achieving the above object, in the roll screen, the sunshade 20 to the drive shaft rod 6 and the driven shaft rod connected to the axial rotation between the two brackets (4a, 4b) of the frame (2) And both ends of the screen fabric 24 alternately formed with the light transmitting portion 22, respectively, between the gear 14 of the drive shaft rod 6 and the gear 16 of the driven shaft rod 8 Is characterized in that the connection to the idle gear (18).

The present invention has the advantage of easily adjusting the shade of the screen fabric with a small force and the complete opening and closing of the screen fabric quickly and the appearance of the screen fabric is beautiful.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a roll screen according to an embodiment of the present invention, Figure 2 is a partially exploded perspective view of Figure 1, Figure 3 is a side cross-sectional view of the roll screen. And Figure 4 is a configuration diagram that can know the coupling state of the lower bracket and the guide rod.

1 to 4 together, the roll screen (A) according to an embodiment of the present invention is capable of rotating two shafts (6) (8) between the two brackets (4a, 4b) of the frame (2) Connection is installed. One of the two shafts (6) (8) is a roll shaft rod that is rotated by a lifting chain line (12) wound around the chain wheel (10) as a driving shaft rod (6), the other one driven shaft (8) ) Is a roll shaft rod connected to the drive shaft rod 6 and the respective gears 16 and 14 to be driven. In this case, the drive gear 14 and the driven gear 16 are mounted at a predetermined interval as shown in FIGS. 2 and 3, and the idle gear 18 is provided between the two gears 14 and 16 so that both gears 14 ( 16 is rotated by the idle gear (18). At this time, the idle gear 18 is a gear for transmitting a rotational movement from one side to the other without changing the rotational direction and the reduction ratio. It is preferable that the drive gear 14 and the driven gear 16 be installed in a diagonal direction on one bracket 4a with the idle gear 18 therebetween. The gears 14, 16, and 18 are installed on one bracket 4a, and the chain wheel 10 is installed on the other bracket 4b.

In the present invention, each of the driving shaft rod 6 and the driven shaft rod 8 is configured to be coupled to both ends of the screen fabric 24 formed with the shade portion 20 and the light transmitting portion 22 alternately, before the coupling The screen fabric 24 is wound around the outer circumferential surface of the lower guide rod 32 to pass through the guide hole 28 between the guide rod 32 and its lower weight bar 26. At this time, the guide rod 32 is to be fixed by the connecting member (36). In addition, the guide hole 28 is formed between the guide bar 32 and the weight bar 26 by allowing the guide bar 32 horizontally connected to the upper portion of the lower bracket 30 on both sides of the body of the weight bar 26. . By doing so, the screen fabric 24 is divided into a front part screen and a rear part screen based on the weight bar 26 below, and is formed to overlap.

Couple the weight bar 26 and the guide bar 32 to both lower bracket 30, as shown in Figure 4, the weight bar 26 is fixed to the protrusion (30b) formed on one side lower portion of the lower bracket 30 The guide rod 32 includes a connection member 36 including an end cap 34 fitted to a square protrusion 30a formed on one side of the lower bracket 30 and a lower bracket 30 for fixing the end cap 34. It is fixed to ()) and ascend and descend as it is without rotating the axis of the screen fabric 24 in the ascending and descending. In this case, the guide rod 32 may be directly coupled to the square protrusion 30a of the lower bracket 30. The angular protrusion 30a is formed in a triangle, a square, a pentagon, and the like, and is inserted into the end cap 34 so that the guide rod 32 is not axially rotated, but in the present invention, it is formed in a cross shape so that the fixing is more firm. Explained.

It is preferable that the shade 20 of the screen fabric 24 is formed of a jacquard fabric, and the light-transmitting portion 22 of the screen fabric 24 is formed of a mesh fabric. The jacquard fabric constituting the sunshade 20 can be squeezed by putting a pattern and color desired by the producer on the fabric can make the appearance of the roll screen fabric 24 beautiful. The mesh fabric constituting the light-transmitting part 22 gives a cool feeling, and if the embroidery pattern is formed on the mesh fabric, it can be harmonized with the pattern and color of the jacquard fabric.

In the exemplary embodiment of the present invention, the drive shaft rod 6 and the driven shaft rod 8 connected to both side brackets 4a and 4b of the frame 2 are axially rotatable, and the gears 14 and 16 are connected to each other. And a driving shaft rod 6 which is interlocked with the idle gear 18 between the two gears 14 and 16, and also when the user pulls the elevating chain 12. Also included is a structural feature such that the winding ratio of the screen fabric 24 of the driven shaft 8 is relatively different.

Thus configured to have the idle gear 18 connecting the two shafts (6) (8) and the gears (14) (16), the user is to raise or lower the screen fabric (24) with the lifting chain line (12) When lowering, the opening and closing speed is very fast with a small force, and the winding ratio of the screen shaft 24 of the driving shaft rod 6 and the driven shaft rod 8 is relatively different. Even when the opening and closing adjustment is made, the shading and the lightcasting are rapidly formed through the cross-shaping of the shade 20 and the floodlight 22 of the front screen and the rear screen of the screen fabric 24.

As a method of making the winding ratio of the screen fabric 24 at the driving shaft 6 and the driven shaft 8 relatively different, the method of changing the gear ratio of the driving gear 14 and the driven gear 16 is different. As another method, there is a method of varying the diameter ratio of the drive shaft rod 6 and the driven shaft rod (8).

In the exemplary embodiment of the present invention, the gear ratio between the drive gear 14 coupled to the drive shaft rod 6 and the driven gear 16 coupled to the driven shaft rod 8 is about 1: 2. On the contrary, the drive shaft rod 6 Compared to the driven shaft 8, the rod diameter was about 2: 1. In this way, when the elevating adjustment by the elevating chain line 12, the winding width of the front screen of the drive shaft bar 6 is approximately four times more than the winding width of the back screen of the driven shaft bar 8 screen Through the cross-formation of the sunshade 20 and the light-transmitting portion 22 of the front screen and the rear screen of the fabric (24) it is possible to quickly make the shade and light projection.

For example, referring to FIG. 2 mainly, when the elevating chain line 12 is pulled from the front side (front screen side) and the drive shaft bar 6 is rotated two times, the drive gear 14 is rotated two times. As the driven gear 16 rotates once by the idle gear 18 connected to the drive gear 14, the driven shaft rod 8 rotates once. At this time, since the ratio of the diameter of the driving shaft 6 and the driven shaft 8 is 2: 1 (circumference = diameter × π), the winding ratio in which the screen fabric 24 is wound around the driving shaft 6 and the driven shaft 8 Is approximately 4: 1. Therefore, the front screen wound around the drive shaft rod (6) is wound about four times faster than the rear screen wound around the driven shaft rod (8), even if the lifting chain 12 pulls a little, the shade and floodlight is made quickly.

In the present invention, the gear ratio of the drive gear 14 and the driven gear 16 is configured to about 1: 2, but may be configured to about 1: 1.5 to 3. However, when the gear ratio is less than 1: 1.5, the rotation of the driven shaft rod 8 becomes faster than when the gear ratio is 1: 2, and the screen of the rear part of the driven shaft rod 8 at the time of unwinding and winding is the front of the driving shaft rod 6. Since the sub-screen follows a high speed, the speed of sunshade and floodlights is slowed down.

On the contrary, when the gear ratio is greater than 1: 3, which is larger than 1: 2, the speed of the driven shaft 8 is slowed down and the speed of sunshade and light projection is increased, but the size of the driven gear 16 is large in the narrow frame 4a. There are disadvantages to be taken. If the size of the drive gear 14 is reduced in order not to make the driven gear 16 large, the drive gear 14 becomes too small, and therefore, the drive gear 14 cannot function properly as well as the drive gear 14. Since the formation of each element to be formed in the) becomes difficult in manufacturing, the ratio of the drive gear 14 and the driven gear 16 is most preferably about 1: 2.

In addition, although the diameter ratio of the drive shaft rod 6 and the driven shaft rod 8 was comprised about 2: 1, you may comprise about 1.5-3: 1. When the diameter ratio is less than 1.5: 1, the rotation of the driven shaft rod 8 by the drive shaft rod 6 is faster than when the diameter ratio is 2: 1, so that the rear screen of the driven shaft rod 8 is driven by the shaft shaft 6 The front part of the screen will follow the high speed, so that the shade and floodlight speed will slow down.

On the contrary, if the diameter ratio is larger than 3: 1, the speed of the driven shaft 8 is slowed down, so that the speed of the sunshade and the light transmission is increased, but the size of the drive shaft 6 is increased. 6) and the diameter ratio of the driven shaft 8 is most preferably about 2: 1.

In the present invention, the gear ratio between the drive gear 14 and the driven gear 16 is 1: 2 so that the drive gear 14 is smaller than the driven gear 16, the drive shaft rod 6 and the driven shaft rod (8) The ratio of the diameter of the drive shaft rod 6 is larger than the driven shaft rod (8) is 2: 1, the gear ratio of 2: 1 and the diameter ratio of 1: 2 may be configured.

Now, the operation of the roll screen (A) according to an embodiment of the present invention will be described in detail.

5A and 5B are operation state diagrams of the roll screen A of the present invention.

5A and 5B, the user adjusts the elevating chain line 12 so that the projection 22 and the rear screen of the front screen (right side of the screen) of the screen fabric 24 as shown in FIG. 5A. When the transmissive portions 22 on the left side of the image are staggered, the entire window is formed by the shade portions 20 of the front and rear portions. However, when the lifting chain 12 is pulled from the front side, as shown in FIG. 5B, the light transmitting part 22 of the front screen of the screen fabric 24 and the light emitting part 22 of the rear screen coincide with each other. Light is transmitted through the light transmitting part 22.

Also, as shown in FIGS. 4 to 5B, the screen fabric 24 is positioned toward the rear portion (left side of the drawing) of the driving shaft rod 6 and the driven shaft rod 8, and the screen fabric 24 has each shaft 6. By forming a narrow gap between the ends in contact with (8) to make the shade control more precise.

When the screen fabric 24 needs to be lifted up, the driving shaft rod 6 and the driven shaft rod 8 are interlocked with the idle gear 18 even if the user pulls the lifting chain cord 12 several times. While the screen fabric 24 is quickly lifted up.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

The present invention can be used for window blocking and shading control.

1 is a perspective view of a roll screen according to an embodiment of the present invention,

2 is a partially exploded perspective view of FIG. 1;

3 is a side cross-sectional view of the roll screen.

Figure 4 is a configuration diagram that can know the coupling state of the lower bracket and the guide rod,

Figures 5a and 5b is an operational state diagram of the roll screen.

(A)-Roll Screen (2)-Frame

(4a) (4b)-bracket (6)-drive shaft

(8)-driven rod (10)-chain wheel

(12)-elevating chain (14)-drive gear

(16)-Driven Gears (18)-Children Gears

(20)-shades (22)-Floodlight

(24)-Screen Fabric (26)-Weightbar

(26)-Mageba (28)-Informer

(30)-Lower bracket (30a)-Square corner

(30b)-Protrusion (32)-Guide

(34)-End Cap (34a)-Square Groove

(36)-connecting member

Claims

In a roll screen,

Screen fabric formed by alternately forming the shading portion 20 and the light transmitting portion 22 on the driving shaft rod 6 and the driven shaft rod 8 which are axially rotatable between the brackets 4a and 4b of the frame 2. Each end of the 24 is configured to be coupled to each other, and the drive gear (14) and the driven gear (16) is a roll screen, characterized in that the connection configuration of the idle gear (18).

The roll screen according to claim 1, wherein the screen fabric (24) is configured to be wound around the outer circumferential surface of the guide rod (32) fixed to the connecting member (36) having a square protrusion.

The roll screen according to claim 1 or 2, wherein the gear ratio between the drive gear (14) and the driven gear (16) is 1: 1.5-3.

4. A roll screen according to claim 3, wherein the diameter ratio between the driven shaft rod (8) and the drive shaft rod (6) is 1: 1.5-3.