KR101352533B1 - Roll blind for safety - Google Patents

Abstract

The present invention relates to a roll blind. The roll blind according to the present invention comprises a pipe shaped protection member which is formed into a U-shape to surround a loop portion of a U-shape which is a lower unit of a blind line. Both end units of the pipe shaped protection member are extended in an upper direction as a fixed length. The blind line is inserted inside the pipe shaped protection member, and then the pipe shaped protection member guides the blind line to be moved. A projection holder is formed on each end unit of the pipe shaped projection member. The roll blind comprises a pipe shaped first and second driving members which form a driving projection at the outer top side and forms a protrusion to prevent external separation by being hung on the projection holder formed on each end unit of the projection member at the outer bottom side. The pipe shaped first and second driving members guide so that the blind line is penetrated and inserted and is moved in the inner side. The pipe shaped first and second driving members have a symmetry structure. The roll blind comprise an elastic unit which is arranged on a space which is surrounded by the first and second driving members and is supported by the projection member and accepts a spring member in two receiving spaces which are separately arranged based on a center portion. A side driving hole which opens each receiving space and is formed lengthways in upper and lower directions and guides the upper and lower movements of the driving projection is formed on both sides of the elastic unit.

Description

[0001] Roll blind for safety [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll blind, and more particularly, to a roll blind that prevents a safety accident caused by a blind strip of a roll blind and improves operational performance.

The curtain is an interior accessory installed to the window or entrance of the building to control the light coming from the outside. Such a curtain has the purpose of shielding an external line of sight, soundproofing, waving, and so forth, in addition to the above-mentioned object. In particular, the purpose is to enhance the aesthetics of the interior by changing the hard and cold feeling felt on the wall or glass to soft and warm.

On the other hand, the curtain is divided into a method of being opened and closed right and left according to the opening and closing operation and a method of opening and closing the upper and lower. However, such a classification is a general and general division, and in reality, it is a roll blind, a vertical blind, a screen blind, a roman shade, a combi screen, etc. And is widely used.

Figure 1 shows a schematic view of a conventional roll blind.

1, a conventional general roll blind 10 includes a frame 12, a winding rod 14, a winding unit 15, a screen member 16, and a blind strip 18.

The frame 12 is fixed to the upper end of the window and supports the roll blind 10.

The winding rod 14 is rotatably supported on the frame 12 and has a cylindrical shape having a predetermined length in the horizontal direction.

The wind-up unit 15 is formed with wind-up grooves for coupling the drive shaft to one end of the wind-up rod 14 and for holding the wind-up balls on the circumferential surface thereof. The blind strip 18 is engaged with the blind strip 18, Thereby rotating the winding rod.

The screen member 16 is fixed to an upper end of the winder rod 14. When one side of the blind strip 18 is moved downward, the screen member 16 is rotated by the forward rotation of the winder rod 14, When the other side of the blind strip 18 is moved downward, the screen member 16 is wound on the winding rod 14 by the reverse rotation of the winding rod 14.

The blind string 18 is provided in the form of a ball chain having a winding ball.
The prior art related to the present invention is Republic of Korea Patent Publication No. 10-0994401 (2010.11.09).

The blind strip for driving the screen member or the blind member (hereinafter referred to as 'screen member') up and down in the above-described roll blind may cause a risk of accident such as hanging of the child or winding of the blind strip on the neck Have.

Therefore, various studies have been conducted to prevent safety accidents due to blind strips.

Accordingly, an object of the present invention is to provide a roll blind with improved safety that can overcome the above-mentioned conventional problems.

Another object of the present invention is to provide a roll blind that prevents or minimizes safety accidents and improves the operability of the roll blind.

According to an embodiment of the present invention for achieving some of the technical problems described above, the winding unit by rotating the blind bar of the ball chain form having a winding rod and a winding ball fixed to the frame according to the present invention Roll blinds to expand or wind the screen member fixed to the winding rod by rotating the, is provided in a U-shape to surround the U-shaped loop portion, which is the lower end of the blind string, so that both ends extend in a predetermined length in the upper direction And the blind line is penetrated and inserted to guide the movement of the blind line from within, and both ends of the tubular protective member formed with a locking jaw; Drive projections are formed on the outer upper end, respectively, and projection protrusions are formed on the outer lower end, respectively, to prevent external deviation from being caught by the locking jaws formed at each of both ends of the protection member. Guide to enable the movement of the tubular first drive member and the second drive member having a symmetric structure with each other; Two receiving spaces disposed in a space surrounded by the protection member, the first driving member, and the second driving member, the lower part being supported by the protection member, and spaced apart from each other based on a central portion thereof. Each of the spring member is accommodated. Each side surface is provided with an elastic unit which is formed in each of the receiving space is formed long in the vertical direction long to open the side driving hole for guiding the shangdong of the driving projection.

When the first driving member or the second driving member is moved downward, the blind row is moved downward together, and the driving protrusion is inserted into the side driving hole to move downward while compressing the spring member, and the first driving The lower end of the member or the second driving member may have a structure inserted into the protection member.

The body of the first driving member and the second driving member is a soft material, the driving projection and the locking projection is a hard material, the first driving member and the second driving member is the spring member when the force is not applied It can be configured to be restored to the original position by the restoring force of.

The spring member may be a coil spring or a leaf spring.

The protective member has a larger diameter than the first driving member and the second driving member, and when the first driving member or the second driving member moves downward, the first driving member or the second driving member is entirely Or a part may be inserted into the inner space of the protective member.

According to the present invention, it is possible to improve the operation performance of the roll blind, to easily drive, and to prevent a safety accident.

1 is a perspective view of a conventional roll blind,
2 is a schematic perspective view of a roll blind according to a first embodiment of the present invention;
Figure 3 is an enlarged perspective view of the blind row portion of Figure 2,
4 is a partial cross-sectional view of FIG.
5 is an operational state diagram of FIG. 4,
6 is an overall perspective view of a roll blind according to a second embodiment of the present invention;
7 is an enlarged perspective view of the blind row portion of FIG. 6,
8 is a plan view of a portion including an upper surface of the elastic unit of FIG.
9 is a partial cross-sectional view of FIG.
10 is an operational state diagram of Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings without intending to intend to provide a thorough understanding of the present invention to a person having ordinary skill in the art to which the present invention belongs.

2 to 4 are schematic views of roll blinds according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the entire part, FIG. 3 is an enlarged perspective view of the blind row portion of FIG. 2, and FIG. 4 is a partial sectional view of FIG. 3.

2 to 4, the roll blind 100 according to the first embodiment of the present invention, the frame (not shown), the winding rod 114, the winding unit 115, the screen member 116 , A blind line 118, a protection member 120, a first driving member 130a, a second driving member 130b, and an elastic unit 140.

The frame has a predetermined length in the horizontal direction and is fixed to the upper end of the window to support the roll blind 100. Although the frame is not shown to further illustrate the characteristic portions of the first embodiment of the present invention, the structure of the frame is well known to those of ordinary skill in the art to which the present invention belongs.

The winding rod 114 is rotatably supported on the frame and has a cylindrical shape having a predetermined length in the horizontal direction. The structure of the winding rod 114 is also well known to those of ordinary skill in the art.

The blind string 118 is provided in the form of a ball chain having a winding ball 118a. Since the blind line 118 is provided in a loop shape, the upper end forms a U-shaped inverted curved shape, the lower end forms a U-shaped curved shape, and the middle part of the blind lines 118 face each other. To achieve a structure. Here, one of the two blind rows 118 facing each other, the blind row 118 is called a blind row, the other blind row 118 will be referred to as a blind row of the other side.

The winding unit 115 has a cylindrical shape in which a driving shaft is coupled to one side end of the winding rod 114 and a winding groove 115a is formed on the circumferential surface to fit the winding ball 118a, and the blind line Engaged with 118 to rotate the take-up rod 114 by the shangdong of the blind rope 118. The winding unit 115 may have the same configuration as a sprocket provided in a general roll blind.

The other end of the winding unit 115 may be combined with the end of the frame.

The winding unit 115 may have a configuration that is wrapped by the housing together with the blind line 118 engaged with the winding unit 115. The housing may be provided with a receiving space therein so as not to interfere with the shankdong of the blind string 118 and the rotation of the winding unit 115.

The screen member 116 is installed at the upper end is fixed to the take-up rod 114, the screen member 116 by the forward rotation of the take-up rod 114 when moving one side of the blind line 118 downward When the other side of the blind line 118 is unfolded and unfolded, the screen member 116 is wound around the winding rod 114 by the reverse rotation of the winding rod 114.

The U-shaped loop portion of the lower end of the blind string 118 is provided with a protection member 120 provided in a U-shape surrounding the blind string 118. Both ends of the protective member 120 may be configured to extend in a predetermined length in the upper direction. The length of the extension portion of the retaining member 120 may have a length corresponding to approximately 30% of the blind string 118, but can be variously adjusted as necessary. For example, it may have a length of about 30 ~ 40cm.

Here, both ends of the protective member 120 may mean both ends of the extension of the protective member 120.

The protection member 120 is provided with a hollow tubular shape to guide the blind wire 118 to be inserted through the blind wire 118 to allow the movement of the blind wire 118 therein, respectively, both ends of the protection member 120 The locking jaw 122 is formed in the inward direction. The locking jaw 122 may be provided with a hard material.

The locking jaw 122 is caught by the locking protrusions 134a and 134b of the first driving member 130a and the second driving member 130b, and thus the first driving member 130a and the second driving member 130b. ) Is prevented from being separated from the protective member 120.

The first driving member 130a is provided in a hollow tubular shape, and one side of the blind line 118 penetrates and is inserted therein to guide the movable movement of the blind line 118 therein.

The first driving member 130a is provided with a soft material, and when the user wants to spread (or wind) the blind, the first driving member 130a is located inside when the body of the first driving member 130a is applied with force. The blind string 118 may be held together, such that the first driving member 130a and the blind string 118 may move downward together. If the force is not applied to the first driving member 130a, the blind strip 118 located inside the first driving member 130a can be freely moved inside the first driving member 130a. To be configured.

A driving protrusion 132a protruding toward the second driving member 130b is formed at an outer upper end of the first driving member 130a, and a horizontally engaging block at an outer lower end of the first driving member 130a. The group 134a is protruded.

The driving protrusion 132a is made of a hard material and is used to compress the spring member accommodated in the elastic unit 140 which will be described later. This will be described in detail when the elastic unit 140 is described.

The locking protrusion 134a may be formed to surround the outer lower end of the first driving member 130a, or may be disposed while the plurality of locking protrusions are spaced apart along the circumferential surface thereof, and the two locking protrusions are symmetric to each other. It is also possible to arrange.

The locking projection 134a is made of a hard material, and the locking projection 134a is caught by the lower end of the first driving member 130a while being inserted inward from one end of the protection member 120. The first driving member 130a may be prevented from being separated from the protective member 120 by being caught by the 122.

The first driving member 130a has a diameter smaller than the diameter of the protection member 120, and the protection member 120 when the first driving member 130a is inserted into the protection member 120. The inside is formed to be freely movable.

The second driving member 130b has a symmetrical structure with the first driving member 130a.

The second driving member 130b is provided in a hollow tubular shape, and the blind wire 118 of the other side penetrates and is inserted to guide the movable movement of the blind wire 118 therein.

The second driving member 130b is provided with a soft material, and when the user wants to spread (or wind) the blind, the second driving member 130b is located inside when the force is applied to the body of the second driving member 130b. The blind string 118 may be held together, such that the second driving member 130b and the blind string 118 may move downward together. If the force is not applied to the second driving member 130b, the blind strip 118 located inside the second driving member 130b can be freely moved inside the second driving member 130b. To be configured.

A driving protrusion 132b protruding toward the first driving member 130a is formed at an outer upper end portion of the second driving member 130b, and a horizontal block is formed at an outer lower end portion of the second driving member 130b. The group 134b is protruded.

The driving protrusion 132b is made of a hard material, and is used to compress the spring member accommodated in the elastic unit 140 to be described later, which will be described in detail when the elastic unit 140 is described.

The locking protrusion 134b may be formed to surround the outer lower end of the second driving member 130b, or may be disposed while the plurality of locking protrusions are spaced apart along the circumferential surface thereof, and the two locking protrusions are symmetric to each other. It is also possible to arrange.

The locking protrusion 134b is made of a hard material, and the locking protrusion 134b is locked when the lower end of the second driving member 130b is inserted into the other end of the protective member 120. The second driving member 130b may be prevented from being separated from the protective member 120 by being caught by the 122.

The second driving member 130b has a diameter smaller than the diameter of the protection member 120, and the protection member 120 when the second driving member 130b is inserted into the protection member 120. The inside is formed to be freely movable.

The first driving member 130a and the second driving member 130b may each have a length of about 30 to 40 cm, but may be added or subtracted as necessary.

The elastic unit 140 is disposed in a space surrounded by the protective member 120, the first driving member 130a and the second driving member 130b. That is, the elastic unit 140 is disposed in the space between the blind string 118 on one side and the blind string 118 on the other side.

The lower part of the elastic unit 140 is supported by the protection member 120, the spring member (144a, 144b) is respectively provided in each of the two receiving spaces are spaced apart from each other on both sides with respect to the central portion inside Being accepted. Side driving holes 142a and 142b are formed in the outer both sides, respectively, and are formed to extend in the vertical direction while opening the receiving spaces.

Specifically, as shown in FIG. 4, the elastic unit 140 has two receiving spaces spaced apart from each other on the left and right sides of the inside, and each of the receiving spaces includes coil members spring members 144a and 144b. Will be accepted. Since the spring members 144a and 144b are to be compressed by the driving protrusions 132a and 132b, the spring members 144a and 144b are driven by the driving protrusions 132a when compressed by the driving protrusions 132a and 132b. The accommodation spaces may be formed to correspond to the sizes of the spring members 144a and 144b so as not to be separated from the 132b.

The side driving holes 142a and 142b are lengths of the first driving member 130a and the second driving member 130b in a downward direction along each side surface at both outer edge portions of the elastic member 140. It can be formed as long.

The side driving holes 142a and 142b may be formed such that the spring members 144a and 144b accommodated in the elastic unit 140 open laterally. For example, in FIG. 4, the left side driving hole 142a has a predetermined length in a downward direction from an outer left upper edge of the elastic unit 140 and may be formed to open the spring member 144a in a lateral direction. 4, the side driving hole 142b on the right side may have a predetermined length in a downward direction from an outer right upper surface edge of the elastic unit 140 and may be formed to open the spring member 144b in a lateral direction.

The side driving holes 142a and 142b are inserted into the driving protrusions 132a and 132b when the first driving member 130a and the second driving member 130b move downward. Is provided for compressing). Therefore, the side driving holes 142a and 142b should have a size in which the driving protrusions 132a and 132b are inserted to move vertically.

In some cases, the upper side portions of the side driving holes 142a and 142b may be closed such that the driving protrusions 132a and 132b are not separated from the upper portion of the elastic unit 140 in an upward direction.

In addition, a support rod 117 may be further provided to support the elastic member 140. The support rod 117 is provided in a rod or plate shape extending in the lower direction from the lower end of the housing of the winding unit 115 to be coupled to the groove 143 formed on the upper surface of the elastic member 140. .

5 shows an operating state of the roll blind 100 according to the first embodiment of the present invention.

As shown in FIG. 5A, when the screen member 116 is to be unfolded (or wound), the inside of the first driving member 130a and the first driving member 130a may be formed. The first driving member 130a and the blind row 118 are moved downward together while holding the blind row 118 inserted together.

In this case, the lower end portion of the first driving member 130a is inserted into the protection member 120 while the driving protrusion 132a moves downward along the side driving hole 142a and the spring member 144a. Will be compressed. As the first driving member 130a moves downward, the first driving member 130a is gradually inserted into the protection member 120, and the blind strip 118 is also inserted into the protection member 120 to move. At this time, the second driving member 130b does not move, and the blind line 118 of the other side inserted into the second driving member 130b is moved upward in the second driving member 130b. .

When the blind line 118 of one side is moved downward, the principle that the screen member 116 is unfolded by the rotation of the winding unit 115 is the same as in the general case.

Then, if the force applied to the first driving member 130a is not removed or held, the first driving member 130a is returned to its original position by the restoring force of the spring member 144a. .

Next, as illustrated in FIG. 5B, when the screen member 116 is to be wound (or unfolded), the second driving member 130b and the second driving member 130b may be separated. The second driving member 130b and the blind row 118 are moved downward together while holding the blind row 118 inserted therein.

In this case, the lower end of the second driving member 130b is inserted into the protection member 120 while the driving protrusion 132b moves downward along the side driving hole 142b and the spring member 144b. Will be compressed. As the second driving member 130b moves downward, the second driving member 130b is gradually inserted into the protection member 120, and the blind strip 118 is also inserted into the protection member 120 to move. In this case, the first driving member 130a does not move, and the blind line 118 of the other side inserted into the first driving member 130a is moved upward in the first driving member 130a. .

When the blind line 118 of the other side is moved downward, the principle of winding the screen member 116 by the rotation of the winding unit 115 is the same as the general case.

Then, if the force applied to the second driving member 130b is not removed or grasped, the second driving member 130b is returned to its original position by the restoring force of the spring member 144b. .

As described above, according to the first embodiment of the present invention, the blind string is wrapped by the protection member and the driving member, and the blind line is blocked by the elastic member, thereby preventing safety accidents and preventing roll blinds. It is possible to drive simply and conveniently.

6 to 9 are schematic views of roll blinds according to a second embodiment of the present invention.

6 is an overall perspective view, FIG. 7 is an enlarged perspective view of the blind row portion of FIG. 6, FIG. 8 is a plan view of a portion including the upper surface of the elastic unit of FIG. 7, and FIG. 9 is a partial cross-sectional view of FIG. 7.

6 to 9, the roll blind 200 according to the second embodiment of the present invention includes a frame (not shown), a winding rod 114, a winding unit 115, and a screen member 116. , A blind line 118, a protection member 120, a first driving member 130a, a second driving member 130b, and an elastic unit 240.

Except the elastic unit 240, the frame (not shown), the winding rod 114, the winding unit 115, the screen member 116, the blind string 118, the protective member 120, the first driving member ( 130a) and the second driving member 130b have the same configuration as in the case of the first embodiment of the present invention, and further description thereof will be omitted.

The elastic unit 140 is disposed in a space surrounded by the protective member 120, the first driving member 130a and the second driving member 130b. That is, the elastic unit 140 is disposed in the space between the blind string 118 on one side and the blind string 118 on the other side.

The lower portion of the elastic unit 140 is supported by the protection member 120, the spring member 244a, 244b is accommodated in each of the two receiving spaces are arranged spaced apart from each other back and forth with respect to the central portion therein Being. Side driving holes 242a and 242b are formed on each of the outer side surfaces, respectively, and are formed to extend in the vertical direction while opening the receiving spaces. Since the two receiving spaces are spaced apart in the front and rear direction, the side driving holes 242a and 242b are also configured to be symmetric in a diagonal direction. That is, one side driving hole 242a is disposed to be slightly biased in the rear direction, and the other side driving hole 242b is disposed to be slightly biased in the front direction.

Specifically, as shown in FIG. 9, the elastic unit 240 includes two accommodation spaces spaced apart from each other in front and rear of the interior, and each of the accommodation spaces has spring members 244a and 244b in the form of leaf springs. Will be accepted. Since the spring members 244a and 244b must be compressed by the driving protrusions 132a and 132b, the spring members 244a and 244b are driven by the driving protrusions 132a when compressed by the driving protrusions 132a and 132b. The accommodation spaces may be formed to correspond to the sizes of the spring members 244a and 244b so as not to be separated from 132b.

The spring members 244a and 244b may have various shapes, including a '-' shape, and two spring members 244a and 244b may be arranged in a symmetrical structure.

In addition, a separate support member 246 may be provided below the accommodation spaces to support lower ends of the spring members 244a and 244b.

The side driving holes 242a and 242b are lengths of the first driving member 130a and the second driving member 130b in a downward direction along each side surface at both outer edge portions of the elastic member 240. It can be formed as long. The side driving holes 242a and 242b may be formed such that the spring members 244a and 244b accommodated in the elastic unit 240 open laterally.

For example, in FIG. 9, the left side driving hole 142a is formed to be slightly rearward from the outer left upper edge of the elastic unit 240, and has a predetermined length in the lower direction and the spring member in the lateral direction. 244a) may be opened, and the side driving hole 242b on the right side of FIG. 9 is formed to be slightly biased forward from the outer right upper surface edge of the elastic unit 140, and has a predetermined length in the lower direction. It may be formed to open the spring member 244b in the lateral direction.

The side driving holes 242a and 242b are inserted into the driving protrusions 132a and 132b when the first driving member 130a and the second driving member 130b move downward, and thus the spring members 244a and 244b. Is provided for compressing). Therefore, the side driving holes 242a and 242b should have a size in which the driving protrusions 132a and 132b are inserted to move vertically.

In some cases, the upper side portions of the side driving holes 242a and 242b may be closed so that the driving protrusions 132a and 132b are not separated from the upper portion of the elastic unit 240 in an upward direction.

In addition, a support rod 117 may be further provided to support the elastic member 240. The support rod 117 is provided in the shape of a rod or plate extending in the lower direction from the lower end of the housing of the winding unit 115 is coupled to the groove 243 formed on the upper surface of the elastic member 240. .

10 shows an operating state of the roll blind 200 according to the second embodiment of the present invention.

As shown in FIG. 10A, when the screen member 116 is to be unfolded (or wound), the inside of the first driving member 130a and the first driving member 130a may be formed. The first driving member 130a and the blind row 118 are moved downward together while holding the blind row 118 inserted together.

In this case, the lower end of the first driving member 130a is inserted into the protection member 120 while the driving protrusion 132a moves downward along the side driving hole 242a while the spring member 244a is moved. Will be compressed. As the first driving member 130a moves downward, the first driving member 130a is gradually inserted into the protection member 120, and the blind strip 118 is also inserted into the protection member 120 to move. At this time, the second driving member 130b does not move, and the blind line 118 of the other side inserted into the second driving member 130b is moved upward in the second driving member 130b. .

When the blind line 118 of one side is moved downward, the principle that the screen member 116 is unfolded by the rotation of the winding unit 115 is the same as in the general case.

Then, if the force applied to the first driving member 130a is not removed or grasped, the first driving member 130a is returned to its original position by the restoring force of the spring member 244a. .

Next, as shown in FIG. 10B, when the screen member 116 is to be wound (or unfolded), the second driving member 130b and the second driving member 130b may be separated. The second driving member 130b and the blind row 118 are moved downward together while holding the blind row 118 inserted therein.

In this case, the lower end portion of the second driving member 130b is inserted into the protection member 120 while the driving protrusion 132b moves downward along the side driving hole 242b and the spring member 244b. Will be compressed. As the second driving member 130b moves downward, the second driving member 130b is gradually inserted into the protection member 120, and the blind strip 118 is also inserted into the protection member 120 to move. In this case, the first driving member 130a does not move, and the blind line 118 of the other side inserted into the first driving member 130a is moved upward in the first driving member 130a. .

When the blind line 118 of the other side is moved downward, the principle of winding the screen member 116 by the rotation of the winding unit 115 is the same as the general case.

Then, if the force applied to the second driving member 130b is not removed or grasped, the second driving member 130b is returned to its original position by the restoring force of the spring member 244b. .

As described above, according to the second embodiment of the present invention, the blind string is wrapped by the protection member and the driving member, and the blind line is blocked by the elastic member, thereby preventing a safety accident and preventing the roll blind. It is possible to drive simply and conveniently.

The foregoing description of the embodiments is merely illustrative of the present invention with reference to the drawings for a more thorough understanding of the present invention, and thus should not be construed as limiting the present invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the basic principles of the present invention.

114: winding rod 115: winding unit
116 screen member 120 protective member
130a, 130b: drive member 140: elastic unit
118: blind line

Claims (5)

In a roll blind which rotates the take-up unit by rotating the take-up unit by rotating the take-up rod fixed to the frame and the ball chain-shaped blind row having the take-up ball, and which rolls:
It is provided in a U-shape to surround a U-shaped loop portion, which is a lower end of the blind string, so that both ends thereof extend in a predetermined length in an upward direction, and the blind wire is inserted through the movement of the blind wire. Guide to be possible, and both ends of the tubular protective member formed with a locking step;
Drive projections are formed on the outer upper end, respectively, and projection protrusions are formed on the outer lower end, respectively, to prevent external deviation from being caught by the locking jaws formed at each of both ends of the protection member. Guide to enable the movement of the tubular first drive member and the second drive member having a symmetrical structure with each other;
Two receiving spaces disposed in a space surrounded by the protection member, the first driving member, and the second driving member, the lower part being supported by the protection member, and spaced apart from each other based on a central portion thereof. Each of the spring member is accommodated. Roll blinds, characterized in that each side has an elastic unit which is formed in each of the receiving space is formed long in the vertical direction long to open the side driving holes for guiding the shanghaidong of the driving projection. The method according to claim 1,
When the first driving member or the second driving member is moved downward, the blind row is moved downward together, and the driving protrusion is inserted into the side driving hole to move downward while compressing the spring member, and the first driving Roll blind member, characterized in that the lower end of the member or the second driving member has a structure that is inserted into the protection member. The method according to claim 2,
The body of the first driving member and the second driving member is a soft material, the driving projection and the locking projection is a hard material, the first driving member and the second driving member is the spring member when the force is not applied Roll blind, characterized in that configured to be restored to its original position by the resilience of the. The method according to any one of claims 1 to 3,
And the spring member is a coil spring or a leaf spring. The method according to claim 1,
The protective member has a larger diameter than the first driving member and the second driving member, and when the first driving member or the second driving member moves downward, the first driving member or the second driving member is entirely Or a roll is inserted into the inner space of the protective member.

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