KR101647483B1 - Roll blind - Google Patents

Abstract

According to one embodiment of the present invention, a roll blind is provided.
A roll blind according to an embodiment of the present invention includes a roll screen including a first screen and a second screen formed to overlap with each other, a plurality of third screens connecting between the first screen and the second screen, A pair of body parts rotatably coupled to both ends of the winding rod and connected to each other, and a pair of body parts connected at one end to the winding rod and at the other end to a pair of bodies A pulling screen connected to the winding section to pull up the winding section, a second end coupled to the support section and coupled to the other end of the pulling screen to wind up the pulling screen, And a pulling means for rotating the pulling roll, wherein the elastic member applies an elastic force to the winding rod to wind the roll screen , Winding up the winding rod roll screen raise the tow-screen, drag the winding parts, you can get off loose parts of the tow-screen winding down the winding rod loose roll screen.

Description

Roll blind

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll blind, and more particularly, to a roll blind having a structure in which the tension of a winding rod for winding a roll screen is easily adjusted and the amount of transmitted light can be easily adjusted.

Generally, a roll blind is installed on a transparent window or a glass wall, and is used to cut off the field of view so that the room can not be seen from the outside, or to control the amount of light projected from the outside.

Most roll blinds fix one side of the roll screen to a support rod located at the upper end, and the other side of the roll screen is fixed to the wind-up stick to wind or unwind the roll screen on the wind-up bar to form a barrier film on the windshield or glass wall. At this time, the pulling chain connected between the support rod and the winding rope raises or lowers the winding rods and simultaneously rotates the roll rods up or down.

However, when the traction chain is used to ascend or descend using a traction chain, if the traction chain is broken or broken, not only the life of the product is shortened but also safety problems such as hung up children in the exposed traction chain occur. Also, it is troublesome to repeatedly perform processes such as assembly-test-disassembly in order to adjust the degree of winding of the roll screen due to the rotation of the winding rod, that is, the tension of the winding rod. There is a problem that the moire phenomenon occurs between the rolled screen and the confluence of the view.

Korean Patent Publication No. 10-2008-0064707 2008. 07. 09

SUMMARY OF THE INVENTION It is an object of the present invention to provide a roll blind having a structure in which the tension of a winding rod for winding a roll screen is easily adjusted and the amount of transmitted light can be easily controlled.

The technical objects of the present invention are not limited to the technical matters mentioned above, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a roll blind comprising: a first screen and a second screen formed to overlap with each other; a plurality of third screens connecting the first screen and the second screen; And a pair of body parts connected to each other so as to be rotatably connected to both ends of the wind-up rod, and a pair of wind- A pulling screen connected to the winding rods and having an elastic member connected to at least one of the pair of body portions at the other end thereof, a pull screen connected at one end to the winding portion to pull up the winding portion, A traction roll coupled to the other end of the traction screen to wind up or unwind the traction screen, Wherein the elastic member is provided with an elastic force to wind the roll screen so that when the pull screen pulls up the winding portion, the winding rod winds up the roll screen, When the screen unwinds the wind-up portion, the wind-up rod unwinds the roll screen.

The first screen and the second screen transmit light, and the third screen can block light.

The traction screen overlaps the first screen and the second screen and is capable of transmitting light.

Wherein the first screen, the second screen, and the traction screen are each formed as a net through which light is transmitted at least partially, the traction screen having different grid patterns with at least one of the first screen and the second screen have.

And a pull bar connecting the pair of body parts, wherein the pull screen can be fixed to the pull bar on one side.

The traction screen may be overlapped with the wind-up bar with one side fixed to the drawbar and the lower end hanging down.

A ring-shaped elastic member coupled to one of the pair of body portions and coupled to an inner or outer peripheral portion of the socket portion, the ring- A brake spring which is engaged with the socket portion to apply the pressure to the socket portion and releases the engagement with the socket portion when a pressure is applied to the socket portion in a second direction opposite to the first direction, A driving frame rotatably coupled to the driving frame and applying a pressure to the engaging portion in the second direction to apply a braking force to the brake spring, And a second driving protrusion for releasing the second driving protrusion.

The socket portion may further include a through hole communicating with the outside of the body portion and the driving rod, and the driving rod may include an adjusting hole through which the adjusting hole for rotating the driving rod is inserted through the through hole.

The socket portion includes a socket housing coupled to the winding rod and a socket block rotatably coupled to the socket housing, wherein the socket block is fixed to the body portion so that rotation of the socket block can be restricted.

The first driving projection and the second driving projection may have an arcuate shape protruding from each other, and may be disposed on the same plane.

An opening / closing roll rotatably coupled to the support portion and having an upper end coupled to the first screen and an upper end of the second screen, and opening / closing means for rotating the opening / closing roll, wherein the first screen and the second screen May be coupled in parallel at different positions of the opening and closing roll, respectively.

According to the present invention, it is possible not only to solve the safety problem, but also to arrange the traction screen in front of the roll screen and to prevent the moire of the roll screen The phenomenon can be blocked. Further, the tension of the spring contained in the winding rod can be easily adjusted, and the degree of winding or unwinding of the roll screen due to the rotation of the winding rod can be easily grasped.

1 is a perspective view showing a state of a roll blind according to an embodiment of the present invention.
Fig. 2 is an incisional perspective view showing the winding portion of the roll blind of Fig. 1 cut away. Fig.
3 is an enlarged perspective view showing an enlarged roll screen.
Fig. 4 is an exploded perspective view showing the winding portion disassembled; Fig.
5 is a perspective view illustrating a state in which the socket portion and the elastic portion of FIG. 4 are coupled.
Figs. 6 to 8 are schematic operation diagrams showing the operation of the socket portion and the elastic portion of Fig. 5;
Fig. 9 is an operational view for explaining the opening / closing operation of the roll blind.
10 is an operational view for explaining the operation of adjusting the light projected amount of the roll blind.
11 is a perspective view showing a state of a roll blind according to another embodiment of the present invention.
12 is an exploded perspective view showing the roll blind of FIG. 11 in an exploded state.
13 is an enlarged perspective view showing an enlarged view of the support portion.
Fig. 14 is an operation diagram for explaining a light amount adjustment operation of the roll blind. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a roll blind according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 10. FIG.

1 is a perspective view showing a state of a roll blind according to an embodiment of the present invention.

The roll blind 1 according to an embodiment of the present invention is a device used to block the field of view so that the room is not visible from the outside and to control the amount of light projected from the outside. The roll blind 1 moves the roll screen 10 up and down using a ball chain 72 and adjusts the amount of light projected onto the roll screen 10 using an open / close chain (see 22 in FIG. 2).

The roll blind 1 uses the traction screen 73 to raise or lower the winding rods (see 31 in Fig. 2), thereby prolonging the life of the product and solving safety problems. Further, since the traction screen 73 is disposed in front of the roll screen 10, the moire phenomenon of the roll screen 10 can be blocked. Here, the moire phenomenon is a phenomenon in which periodic patterns are overlapped and appear larger than the original grid pattern. The first screen 11 and the second screen 12 of the roll screen 10 are formed in the form of a net so that a moire phenomenon can be generated in which the tow screen 73 disposed in front of the roll screen 10 blocks . It is also possible to easily adjust the tension of the elastic member (refer to 58 in Fig. 2) accommodated in the winding rod 31 so that the degree of winding or unwinding of the roll screen 10 due to the rotation of the winding rod 31 can be easily grasped And the amount of light projected onto the roll screen 10 can be adjusted by a simple operation.

Hereinafter, the roll blind 1 will be described in detail with reference to Figs. 2 to 7. Fig.

Fig. 2 is an exploded perspective view showing the wound portion of the roll blind shown in Fig. 1, Fig. 3 is an enlarged perspective view showing an enlarged roll screen, and Fig. 4 is an exploded perspective view showing the wound portion. FIG. 5 is a perspective view illustrating a state where the socket portion and the elastic portion of FIG. 4 are coupled with each other, and FIGS. 6 to 8 are schematic operation views illustrating the operation of the socket portion and the elastic portion of FIG.

The roll blind 1 according to the present invention comprises a roll screen 10 composed of three screens, a support 20 for fixing one end of the roll screen 10, a roll 20 for holding the other end of the roll screen 10, A pulling screen 71 to which the other end of the pulling screen 73 is coupled and a pulling screen 71 to which the pulling roll 71 is rotatably driven Means.

The roll screen 10 includes a first screen 11 and a second screen 12 formed to overlap with each other and a plurality of third screens 13 connecting the first screen 11 and the second screen 12 ). 3, the first screen 11 and the second screen 12 are overlapped with each other and transmit light, and the third screen 13 is disposed between the first screen 11 and the second screen 12 12 to block light. In other words, each of the first screen 11 and the second screen 12 is formed as a mesh through which light is at least partially transmitted, and the third screen 13 is formed in a film shape that blocks transmission of light. Thus, the roll screen 10 can transmit or block light according to the overlapping shape of the first screen 11, the second screen 12, and the third screen 13.

For example, when the third screen 13 is vertically disposed between the first screen 11 and the second screen 12, any one of the first screen 11 and the second screen 12 can be transmitted One light is blocked by the third screen 13 and can not transmit the other one. At this time, the plurality of third screens 13 are vertically disposed between the first screen 11 and the second screen 12, and a part of them overlap with each other to block light. Conversely, when the third screen 13 is disposed horizontally between the first screen 11 and the second screen 12, the light transmitted through either one of the first screen 11 and the second screen 12 Can transmit the other one.

One end of the roll screen (10) is fixed by a support (20). The supporting part 20 serves as a support structure for the roll blind 1 and fixes the upper end of the roll screen 10, and can be fixed to a ceiling or the like. The supporting portion 20 is formed in a frame structure having a transverse section of 'A' shape and closed at both ends. Therefore, the support portion 20 protects not only the support structure of the roll blind 1 but also the opening and closing rolls (see 21 in Fig. 9) accommodated therein and the opening and closing means, and can prevent the penetration of foreign matter such as dust.

The open / close roll 21 is rotatably coupled to the support portion 20 by a bar or rod shaped member having a length corresponding to the width of the roll screen 10. [ The opening and closing rolls 21 are respectively coupled with the upper ends of the first screen 11 and the second screen 12 along the longitudinal direction and at a point where the first screen 11 is coupled with the second screen 12, The points to which they are coupled can be positioned coplanar with each other and extended in parallel. In other words, the first screen 11 and the second screen 12 can be coupled in parallel at different positions of the opening and closing rolls 21, respectively. The opening and closing roll 21 is rotationally driven by a separate opening / closing means (not shown). Although the opening / closing means is shown as an opening / closing chain 22 in the drawing, the opening / closing means is not limited to this, and can be variously modified in a structure capable of rotationally driving the opening / For example, the opening and closing means may be formed in a gear structure. At this time, the opening and closing rolls 21 may have gear teeth formed on the outer circumferential surface thereof. In other words, the opening / closing means engages with the gear teeth of the opening / closing roll 21 and rotatably drives the opening / closing roll 21.

The opening and closing chain 22 is coupled to the coupling point of the first screen 11 and the coupling point of the second screen 12 and is exposed to the outside of the support 20. Therefore, when the opening and closing chain 22 is pulled to rotate the opening and closing roll 21, the first screen 11 is moved from the second screen 12 and the third screen 13 is moved from the first screen 11 . The third screen 13 moved along the first screen 11 may be disposed horizontally or vertically between the first screen 11 and the second screen 12 to transmit or block light.

For example, when the open / close chain 22 coupled to the engagement point of the second screen 12 is pulled downward, the opening / closing roll 21 rotates so that the engagement point of the first screen 11 is moved to the second screen 12 As shown in Fig. As a result, the first screen 11 moves upward from the second screen 12, and the third screen 13 moves along the first screen 11 to move the first screen 11 and the second screen 11 12, respectively. When the third screen 13 is arranged vertically, the light is blocked. When the open / close chain 22 coupled to the engagement point of the first screen 11 is pulled downward while the light is blocked by the third screen 13, the open / close roll 21 rotates and the first screen 11 Is located on the same line as the coupling point of the second screen 12. [ As a result, the first screen 11 is returned to its original position, and the third screen 13 is horizontally disposed between the first screen 11 and the second screen 12. When the third screen 13 is disposed horizontally, light is transmitted.

The other end of the roll screen (10) is fixed by a winding section (30). The winding portion 30 is located below the support portion 20 and winds or unwinds the roll screen 10 away from or close to the support portion 20. The winding unit 30 will be described in detail later.

On the other hand, a pulling portion (see 70 in Fig. 9) is disposed on one side of the opening / closing roll 21. The pulling portion 70 is for retracting or winding up the pulling screen 73 for pulling up the winding portion 30 and is housed inside the supporting portion 20. [ In other words, the pulling portion 70 winds up or pulls up the pulling screen 73 to raise or lower the winding portion 30, and the winding portion 30 is lifted or lowered and the roll screen 10 is wound or unwound .

One end of the traction screen 73 is connected to and fixed to the take-up unit 30, and the other end is wound or unwound from the traction unit 70. In other words, when the pulling screen 73 pulls up the winding section 30, the winding rod 31 rolls up the roll screen 10, and when the drawing screen 73 unwinds the winding section 30, Is unrolled from the roll screen 10. The traction screen 73 has the same width as the roll screen 10 but is positioned in front of the first screen 11 and overlaps the first screen 11 and the second screen 12 to transmit light. In other words, the traction screen 73 may be formed to have at least a part of light-transmitting mesh, and may have a different grid pattern with at least one of the first screen 11 and the second screen 12. For example, the traction screen 73 may be formed of a mesh having a larger lattice pattern than the first screen 11 and the second screen 12.

As described above, the first screen 11 and the second screen 12 are formed as a mesh through which light is at least partially transmitted. Particularly, the first screen 11 and the second screen 12 can be formed of a mesh having the same size and pattern and having the same weaving method, and therefore, there is a high probability that moire phenomenon occurs due to overlapping of the patterns. However, by arranging the trailing screen 73 having a different lattice pattern from the first screen 11 and the second screen 12 in front of the first screen 11, this moire phenomenon can be prevented.

However, the drawing screen 73 is not limited to being formed of a net having a grid pattern different from that of at least one of the first screen 11 and the second screen 12, and may be variously modified. For example, the traction screen 73 may be formed of a translucent material having a design such as a landscape, a logo, etc. on the front surface thereof.

The pulling portion 70 includes a pulling roll (see 71 in FIG. 9) and a pulling means (not shown). The pulling roll 71 may be formed to have the same length as that of the opening and closing roll 21, with a bar or rod shaped member having a length corresponding to the width of the pulling screen 73. The pulling roll 71 is rotatably coupled to the support 20 and the other end of the pulling screen 73 is engaged to pull up or down the pulling screen 73. The pulling roll 71 is rotationally driven by a separate pulling means (not shown). Although the drawing means is shown in the form of a ball chain 72 in the drawing, the present invention is not limited thereto, and the drawing roll 71 can be variously modified to rotate the drawing roll 71. For example, the pulling means may be formed in a gear structure or may be formed of an electric motor to rotationally drive the pulling roll 71.

The pulling roll 71 may be located on the upper side of the opening / closing roll 21. Since the pulling roll 71 is located on the upper side of the opening / closing roll 21, the pulling screen 73 can smoothly perform the pulling action of the roll screen 10. [ The pulling roll 71 is rotated by a ball chain 72 in the form of a loop connected to the end to wind up or unwind the pulling screen 73.

The winding section (30) includes a winding rod (31), a pair of body sections (32), and an elastic member (58).

The winding rod 31 is a bar or rod member having a length corresponding to the width of the roll screen 10 like the opening and closing roll 21 and is provided with a recessed groove 31a formed inwardly along the longitudinal direction, (10) is fixed. Therefore, as the winding rod 31 rotates, the roll screen 10 is wound or unwound. At least one indentation groove 31a is formed in the winding rod 31, and both sides thereof may be opened to communicate with the outside. Further, the winding rod 31 has a hollow groove 31b penetrating therethrough in the longitudinal direction thereof, and both ends thereof are supported by a pair of body portions 32. As shown in Fig.

The body portion 32 includes a socket portion 33, a body 42 and a plug 45 which are rotatably coupled to both ends of the winding rod 31 and are connected to each other to support the winding rod 31 .

The socket portion 33 is coupled to one of the pair of body portions 32 by being inserted into the end portion of the winding rod 31 and rotating integrally with the winding rod 31 at one side. The socket section 33 includes a socket housing 34, a connector 35, a stationary ring 36, and a socket block 37.

The socket housing 34 is a tubular member, and its outer circumferential surface is recessed corresponding to the shape of the indentation groove 31a, and can be coupled to the winding rod 31. The socket housing 34 is coupled to the winding rod 31 and rotates integrally with the winding rod 31, and a first passage 34a penetrating in the longitudinal direction is formed inside. The connector 35 is accommodated in the first passage 34a. The connector 35 is inserted into and fixed to the socket housing 34 and formed integrally with the socket housing 34. The connector 35 is formed with a second passage 35a penetrating in the longitudinal direction thereof and the second passage 35a is received with the stationary ring 36 and the socket block 37. [ The socket block 37 is rotatably coupled to the socket housing 34 and has a cylindrical protrusion 39 formed on one side and an extended portion 40 extending from the protrusion 39 on the other side. The protrusion 39 has a protrusion formed on the outer circumferential surface, and the side of the protrusion 39 opposed to the protrusion 39 is recessed inward to form the space 37b. The projecting portion 39 of the socket block 37 is inserted into the second passage 35a of the connector 35 and the extended portion 40 is projected to the outside of the connector 35 or the socket housing 34. [ The socket block 37 has a third passage 37a passing through the protruding portion 39 and the extending portion 40 on the inner side and a brake spring 41 interposed on the space 37b.

The brake spring 41 is a ring-shaped elastic member having at least one engaging portion 41a formed on at least one of both ends thereof, and is engaged with the inner or outer peripheral portion of the socket portion 33. [ In other words, the brake spring 41 can be received in the space 37b of the socket block 37 or can be exposed to the outside of the extension portion 40 of the socket block 37. Hereinafter, the structure in which the brake spring 41 is coupled to the inner peripheral portion of the socket portion 33 will be described more specifically. Although the brake spring 41 is shown in a structure in which both end portions of the brake spring 41 are bent inward to form a ring shape, the present invention is not limited thereto. For example, Or may be formed in a plate spring shape instead of a ring shape. That is, when the brake spring 41 is engaged with the inner peripheral portion of the socket portion 33, the engaging portion 41a is refracted inward, and when the brake spring 41 is engaged with the outer peripheral portion of the socket portion 33, The engaging portion 41a is preferably bent outward.

The brake spring 41 presses the socket portion 33 by applying pressure in the first direction to the latch portion 41a and applies pressure to the latch portion 41a in the second direction opposite to the first direction, And the engagement with the portion 33 is released. Here, the first direction refers to a direction in which the brake spring 41 is loosened to increase the diameter based on a state where the brake spring 41 is coupled to the inner peripheral portion of the socket portion 33. For example, May be the direction A1 shown in Fig. 5 (b). The second direction refers to a direction in which the diameter of the brake spring 41 is reduced by tightening the brake spring 41 based on a state where the brake spring 41 is engaged with the inner peripheral portion of the socket portion 33. For example, May be the A2 direction shown in Fig. 5 (b). However, the first direction and the second direction can be reversed according to the state in which the brake spring 41 is coupled to the socket portion 33. [ For example, when the brake spring 41 is coupled to the outer peripheral portion of the socket portion 33, the first direction means a direction in which the brake spring 41 is tightened to reduce the diameter, and the second direction May mean a direction in which the brake spring 41 is released and the diameter increases. The engagement and disengagement of the brake spring 41 will be described later in detail.

The projecting portion 39 of the socket block 37 is rotatably engaged with the connector 35 by the retaining ring 36. The stationary ring 36 is formed so as to be bent inward and engages with a protrusion formed on the protrusion 39 to engage the socket block 37 with the connector 35.

The body 42 is formed of a plate-shaped member having a constant thickness by which the socket portion 33 is rotatably supported and the pull bar 60 to be described later is fixed. The body 42 has a draw opening 42a on the upper side and a winding opening 42b on the lower side and a first fastening opening 42c and a second fastening opening 42d are formed outside the winding opening 42b . The first fastening hole 42c is disposed on both sides of the winding hole 42b and the second fastening hole 42d is disposed on the upper side of the winding hole 42b and below the drawing hole 42a. A first body protrusion 43 is formed on the upper side of the draw opening 42a and a second body protrusion 44 is formed between the winding opening 42b and the first and second fasteners 43c and 42d . The first body protrusion 43 and the second body protrusion 44 protrude from the inner surface of the body 42 in contact with the socket portion 33. The first body protrusion 43 protrudes from the inner side of the drawbar 60 And the second body projection 44 is received inside the plug 45. As shown in Fig.

A plug 45 is interposed between the socket housing 34 and the body 42. The plug 45 can be received in one side of the socket portion 33 and the other side is fixedly coupled to the body 42 to rotate the socket portion 33 from the body portion 32. The plug 45 has a tubular receiving portion 46 formed at one side thereof and a fixed portion 47 extending from the receiving portion 46 at the other side. The housing portion 46 is formed so that its outer peripheral surface corresponds to the shape of the second passage 35a of the connector 35 and its inner peripheral surface is formed corresponding to the shape of the projecting portion 39 of the socket block 37, As shown in Fig. That is, the socket block 37 is fixed to the body portion 32 by the plug 45, and rotation is restricted. Since the outer circumferential surface of the fixing portion 47 is formed corresponding to the inner shape of the socket housing 34, the plug 45 can be received inside the socket housing 34. At this time, the fixing part 47 is partially protruded to the outside of the socket housing 34 on one side, and the second body protrusion 44 can be received on the inside. The fixing portion 47 is provided with a winding projection 48, a fastening hole 45b and a fastening protrusion 49 at positions corresponding to the winding opening 42b, the first fastening hole 42c and the second fastening hole 42d, . The winding projection 48 and the fastening protrusion 49 can protrude toward the winding hole 42b and the second fastening hole 42d and can be accommodated inside the winding hole 42b and the second fastening hole 42d. The winding protrusion 48 penetrates inside to form a winding hole 45a, and the winding hole 45a can communicate with the third passage 37a. The fastening hole 45b communicates with the first fastening hole 42c and is threaded inward, and can be fastened with a male screw.

On the other hand, the elastic portion 50 is housed inside the winding rod 31. The elastic portion 50 is accommodated in the hollow groove 31b of the winding rod 31 and one end is bound to one of the pair of body portions 32. [ The elastic portion 50 includes a fixing body 51, a driving body 52, and an elastic member 58.

The fixture 51 is a plate-shaped member having a constant thickness and is formed in a manner corresponding to the shape of the hollow groove 31b formed in the winding rod 31 and fixedly inserted in the hollow groove 31b. The fixing member 51 is inserted into the hollow groove 31b of the winding rod 31 and rotates integrally with the winding rod 31. [ The fixing member 51 is coupled to one side of the fixing member 51. The fixing rod 59 is a bar or rod-like member, and one end thereof is coupled to the fixing body 51 and the other end thereof is coupled to the driving body 52.

The driving body 52 includes a driving frame 53 and a driving rod 55 which are coupled to the body 32 and are rotationally fixed.

The driving frame 53 has the fixing rod 59 attached to one side and the other side protruding toward the extension portion 40 of the socket block 37. The driving frame 53 is coupled to the winding rod 31 by the fixing member 51 and the first driving projection 54 is formed on the side facing the socket block 37. The first drive projection 54 can be received inside the brake spring 41 because the outer peripheral surface is formed corresponding to the inner shape of the brake spring 41 as shown in Fig. That is, the first driving projection 54 applies pressure in the first direction to the engaging portion 41a on the inner side of the brake spring 41 to restrict the rotation of the winding rod 31. [ However, the first driving projection 54 is not limited to the pressure applied to the engaging portion 41a in the first direction from the inside of the brake spring 41. [ For example, when the brake spring 41 is engaged with the outer peripheral portion of the socket portion 33, the first drive projection 54 exerts a pressure in the first direction on the outer side of the brake spring 41 to the engagement portion 41a The rotation of the winding rod 31 may be restricted. A driving rod (55) is rotatably coupled to the driving frame (53).

The driving rod 55 is a rod or rod member protruding toward the socket portion 33 and passing through the third passage 37a of the socket block 37. [ That is, the driving rod 55 passes through the third passage 37a and is located inside the connector 35 and the socket housing 34. The end of the driving rod 55 is wound on the winding hole 48 formed in the winding projection 48 of the plug 45 45a. The end of the driving rod 55 is accommodated in the winding hole 45a so that the driving rod 55 can be operated through the winding hole 42b. In other words, the first passage 34a, the second passage 35a, the third passage 37a, and the space 37b of the socket portion 33 communicate with each other to form a through hole (not shown) The hole communicates with the outside of the body portion 32 through the winding hole 45a and the winding opening 42b and the driving rod 55. The driving rod 55 is formed with an adjusting hole 38 into which the adjusting hole 100 is inserted at the center and can be rotated by the adjusting hole 100 passing through the winding hole 45a and the through hole. The operation of the driving rod 55 and the adjusting port 100 will be described in detail later.

A second driving projection (56) is formed on the outer peripheral surface of the driving rod (55). The second driving projection 56 is fixed to the driving rod 55 and integrally moves with the driving rod 55 so that the engaging portion 41a of the brake spring 41, . The second drive projection 56 applies a pressure to the latching portion 41a in the second direction to release the braking of the brake spring 41. [ The first driving projection 54 and the second driving projection 56 are respectively in the shape of an arc protruding toward the socket portion 33 and are arranged on the same plane.

The elastic member (58) is interposed between the fixing body (51) and the driving body (52). One end of the elastic member 58 is connected to the fixing body 51 and rotates integrally with the fixing body 51 and the other end is connected to the driving body 52 to be rotatably fixed to the driving body 52. In other words, one end of the elastic member 58 is connected to the winding rod 31 via the fixing body 51, and the other end is connected to at least one of the pair of body portions 32 through the driving body 52 do. Since the fixing member 51 and the driving body 52 are formed with the fixing protrusions 57 protruding from the side where the fixing member 59 is engaged with the fixing member 59, both ends of the elastic member 58 can be connected. The elastic member 58 provides an elastic force to the winding rods 31 so that the winding rods 31 can wind the roll screen 10. Although the elastic member 58 is shown in the form of a spring in the figure, it is not limited thereto and may be modified into various members capable of providing an elastic force to the winding rod 31. For example, the elastic member 58 may be formed in a rubber band shape.

6 to 8, a method of operating the driving rod 55 and the adjusting port 100, and a coupling and disengagement method of the socket portion 33 and the brake spring 41 will be described in detail.

6 is a view showing a state in which a tension rod of a winding rod, that is, an elastic member, is adjusted by coupling an adjusting rod to a driving rod, and FIG. 7 is a view showing a state in which the brake spring is released when the tension of the elastic member is adjusted . 8 is a view showing a state in which a brake spring is engaged.

6, after the socket portion 33 and the elastic portion 50 are fastened, a bar or rod-shaped adjusting hole 100 is formed in the adjusting hole 38 formed at the center of the driving rod 55, . The adjusting port 100 is inserted into the adjusting hole 38 through the winding hole 42b of the body 42 and is fixed to the driving rod 55. [ When the adjusting rod 100 is rotated in one direction in a state where one end of the winding rod 31 inserted with the fixing body 51 is fixed, the driving rod 55 rotates and elastic energy is stored in the elastic member 58 . In other words, one end of the elastic member 58 connected to the driving body 52 rotates and the other end of the elastic member 58 connected to the fixing body 51 is fixed, so that the elastic member 58 is twisted, . At this time, the socket housing 34 is held in a fixed state, and the socket block 37 rotates together with the driving rod 55.

As the driving rod 55 rotates, the second driving projection 56 coupled to the outer peripheral surface of the driving rod 55 integrally rotates as shown in Fig. The second driving projection 56 is interposed between the engaging portions 41a of the brake springs 41 and thus rotates and applies pressure to the engaging portions 41a of the brake springs 41 in the second direction. The brake spring 41 is tightened inward to reduce the diameter of the brake spring 41 and the engagement with the socket block 37 is released by applying pressure to the latching portion 41a of the brake spring 41 in the second direction. The engagement of the brake spring 41 and the socket block 37 is released so that the engaging portion 41a can be pushed in the rotating direction of the second driving projection 56. When the engaging portion 41a is pushed, ). As this process is repeated, the elastic member 58 is twisted and stores elastic energy.

With this structure, the tension of the elastic member 58 can be adjusted even when the roll screen 10 is attached to the winding rod 31 and the body 42 and the winding rod 31 are assembled. In other words, the driving rod 55 can be operated by using the adjusting opening 100 through the winding opening 42b so that the tension of the elastic member 58 can be easily adjusted without separating the winding rod 31 from the body 42 Can be adjusted. As a result, the degree of winding or unwinding of the roll screen 10 due to the rotation of the winding rod 31 can be easily grasped.

On the other hand, when one end of the fixed winding rod 31 is placed, the stored elastic energy disappears and the elastic member 58 is rotated in the reverse direction. By this restoring force, the winding rod 31 can rotate and wind the roll screen 10.

8, when the first driving projection 54 rotates and applies a pressure to the latching portion 41a of the brake spring 41 in the first direction, the brake spring 41 is released to the outside, . The brake spring 41 increases in diameter and is pressed against the inner surface of the socket block 37 so that the brake spring 41 and the socket block 37 are engaged. Therefore, the rotation of the brake spring 41 is restricted, and the rotation of the winding rod 31 is also restricted.

On the other hand, the pair of body portions 32 are connected by the pull bars 60. The pull bars 60 are disposed in parallel with the take-up rods 31 so that both ends are respectively coupled to the body 42 and one side of the pull screen 73 is fixed to the pulling grooves 60a formed along the longitudinal direction . 4, the pulling groove 60a is formed in the upper portion of the inside of the pulling bar 60 to receive one end of the pulling screen 73 and the first body projection 43 is inserted do. A traction hole 60b is formed below the traction groove 60a. The traction hole 60b is formed in the inner lower portion of the pull bar 60 and is formed at a position corresponding to the pull hole 42a of the body 42. [ The pulling hole 60b communicates with the pulling port 42a and is threaded inward and can be tightened with a male screw. The first body protrusion 43 is inserted into both sides of the pulling groove 60a and the pull bar 60 is fixed to the body 42 by fastening the male screw to the pulling hole 42a and the pulling hole 60b, do.

One side of the traction screen 73a shown in FIG. 1 may be fixed to the traction groove 60a of the traction bar 60. The trailing screen 73a can be arranged so that its upper end portion is received and fixed in the pulling groove 60a and the lower end portion is overlapped with the take-up rod 31 while being fixed to the weight bar 74 in a downward direction. By arranging the drawing screen 73a in a state of being overlapped with the winding rod 31, it is possible to prevent the structure of the winding unit 30 from being exposed to the outside. That is, the traction screen 73a serves as a curtain of the winding unit 30 to improve the overall appearance of the roll blind 1 and prevent the objects other than the roll screen 10 from being wound together with the winding unit 30 .

Hereinafter, the operation of the roll blind 1 according to an embodiment of the present invention will be described in detail with reference to Figs. 9 and 10. Fig.

Fig. 9 is an operation diagram for explaining the opening / closing operation of the roll blind, and Fig. 10 is an operation diagram for explaining the operation of adjusting the projection amount of the roll blind.

The roll blind 1 according to an embodiment of the present invention raises or lowers the winding rod 31 by using the traction screen 73 so that the life of the product is prolonged and the safety problem can be solved, The screen 73 may be disposed in front of the roll screen 10 to block the moire phenomenon of the roll screen 10. [ The tension of the elastic member 58 accommodated in the winding rod 31 can be easily adjusted so that the degree of winding or unwinding of the roll screen 10 due to the rotation of the winding rod 31 can be easily grasped, The amount of light projected onto the roll screen 10 can be adjusted.

First, the opening and closing operation of the roll blind 1 will be described in detail with reference to Fig. Here, the opening and closing operation means that the roll screen 10 is lifted or lowered to be lifted or lowered.

Fig. 9 (a) is a view showing a state in which the roll screen is unrolled, and Fig. 9 (b) is a view showing a state in which the roll screen is rolled up.

The upper end of the roll screen 10 is fixed to the opening / closing roll 21, and the lower end thereof is fixed to the winding rod 31 and wound. The traction screen 73 is fixed at the upper end to the pulling roll 71 and wound, and the lower end is fixed to the pulling bar 60.

As shown in Fig. 9 (a), when the ball chain 72 connected to one side of the pulling roll 71 is rotated clockwise, the pulling roll 71 also rotates clockwise. The traction roll 71 is rotated so that the traction screen 73 wound on the traction roll 71 is released and the traction bar 60 to which the traction screen 73 is fixed is gradually lowered. As the pull bar 60 is lowered, the roll screen 10 wound around the winding rod 31 is unwound. The winding rod 31 rotates and unwinds the roll screen 10 and rotates the fixed body (refer to 51 in Fig. 6) accommodated therein by the rotation of the winding rod 31. Fig. As the fixture 51 rotates relative to the driver (see 52 in Fig. 5) relatively quickly, one side of the elastic member 58 rotates about the other side, and elastic energy is stored.

A restoring force is applied to the elastic member 58 in which the elastic energy is stored, and the pull bar 60 is closely fixed to the roll screen 10 in the rotating direction in which the restoring force is applied. At this time, due to the elastic energy stored by the rotation of the elastic member 58, the winding rod 31 is lifted at the same time the roll screen 10 is wound. However, the weight of the winding portion 30 is formed so as to be larger, and the roll screen 10 is not wound by the restoring force of the elastic member 58.

Conversely, as shown in Fig. 9 (b), when the ball chain 72 is rotated counterclockwise, the traction roll 71 also rotates counterclockwise. As the drawing roll 71 rotates, the drawn screen 73 is rewound to the drawing roll 71, and the drawing bar 60 gradually rises. At this time, the elastic energy stored in the elastic member 58 is lost by the distance at which the pull bar 60 is lifted. Therefore, the winding rod 31 is rotated, and thereby the roll screen 10 is wound up on the winding rod 31.

Next, with reference to Fig. 10, the operation of adjusting the light projected amount of the roll blind 1 will be described in detail. Here, the operation of adjusting the amount of light to be emitted means adjusting the amount of light transmitted through the roll screen 10 by varying the degree of overlap between the first screen 11, the second screen 12 and the third screen 13 .

10 (a) is a view showing a state in which light is blocked by a roll screen, and FIG. 10 (b) is a view showing a state in which light is transmitted by a roll screen.

The roll screen 10 is wound or unwound and arranged at a predetermined position and then the open / close chain 22 connected to one side of the open / close roll 21 is pulled as shown in FIG. 10 (a) ). At this time, the open / close chain 22 connected to the second screen 12 is pulled downward, and the opening / closing roll 21 is rotated clockwise. As the opening and closing roll 21 rotates, the interval between the first screen 11 and the second screen 12 fixed to the opening and closing roll 21 is minimized, and the third screen 13 is arranged vertically. By arranging the third screen 13 vertically, light transmission is blocked. At this time, the first screen 11 and the second screen 12 are completely in close contact with each other and can operate as one screen.

Conversely, as shown in Fig. 10 (b), when the open / close chain 22 connected to the first screen 11 is pulled downward, the opening and closing roll 21 is rotated in the counterclockwise direction. As the opening and closing roll 21 rotates, the interval between the first screen 11 and the second screen 12 is maximized, and the third screen 13 is arranged horizontally. By arranging the third screen 13 horizontally, the side surface shape of the roll screen 10 is maintained in a ladder shape, and light is transmitted. At this time, since the traction screen 73 located in front of the roll screen 10 is formed to have a grid pattern different from that of at least one of the first screen 11 and the second screen 12, The second screen 12 is overlapped to block the moire phenomenon that occurs.

Hereinafter, the roll blind 1 according to another embodiment of the present invention will be described in detail with reference to Figs. 11 to 14. Fig.

11 is an exploded perspective view of the roll blind of FIG. 11, and FIG. 13 is an enlarged perspective view of the roll blind according to another embodiment of the present invention. It is a perspective view.

The roll blind 1 according to another embodiment of the present invention is configured such that the opening and closing means for rotationally driving the opening and closing roll 21 is formed in a gear structure and the body portion 32 is formed by the body 42, (311). The roll blind 1 according to another embodiment of the present invention is configured such that the opening and closing means for rotationally driving the opening and closing roll 21 is formed in a gear structure and the body portion 32 is formed by the body 42, (311), which is substantially the same as the above-described embodiment. Accordingly, the description of the remaining components will be replaced by the foregoing description, unless otherwise noted.

The supporting portion 20 accommodates the opening and closing roll 21 and the drawing roll 71 and includes a supporting frame 23 and a first supporting body 24 and a second supporting body 25.

The supporting frame 23 connects the first supporting body 24 and the second supporting body 25 to each other and the length of the opening roll 21 and the pulling roll 71 accommodated therein, And the length of the traction screen 73 may vary. The support frame 23 may be formed on the upper surface or the front and rear surfaces of the opening and closing roll 21 and the pull roll 71. For example, as shown in FIG. 12, Shape. The first support body 24 and the second support body 25 are coupled to both ends of the support frame 23 and the opening and closing roll 21 is interposed between the first support body 24 and the second support body 25, And a pulling roll 71 are rotatably coupled.

The first supporting body 24 includes a first rotating shaft 241 and a second rotating shaft 242 protruding toward the inside of the supporting frame 23 and a pulling roll 71 is attached to the first rotating shaft 241 And an opening / closing roll 21 is inserted into the second rotation shaft 242. At this time, the first rotation shaft 241 is positioned above the second rotation shaft 242, and may be disposed forward of the second rotation shaft 242. Here, the forward direction means a direction going in the -x direction in FIG. The first rotary shaft 241 is located above the second rotary shaft 242 but is disposed in front of the second rotary shaft 242 so that the traction screen 73 can smoothly perform the pulling motion of the roll screen 10.

A switch gear 243, a spring 244, a first driving gear 245, and a first housing 251 are inserted into the first rotary shaft 241 in order, and an end portion thereof can be extended. The spring 244, the first drive gear 245 and the first housing 251 inserted into the first rotation shaft 241 are formed in the first rotation shaft 241 by the extended end of the first rotation shaft 241, It is possible to prevent separation from the first rotary shaft 241. The first clutch gear 247 and the second clutch gear 248 are inserted into the second rotary shaft 242 in order and the end portion of the first clutch gear 247 is extended like the first rotary shaft 241, It is possible to prevent the clutch gear 248 from separating from the second rotation shaft 242. [

The first driving gear 245 opens and closes the traction screen 73 by transmitting the rotational force to the traction roll 71. The first clutch gear 247 and the second clutch gear 248 apply rotational force To control the amount of light projected onto the roll screen (10).

The first drive gear 245 may be a chain gear driven by the ball chain 72 and is inserted into the first rotation shaft 241 together with the switch gear 243. The first driving gear 245 and the switch gear 243 are coupled to each other at one side and rotate together when a driving force is transmitted from the ball chain 72. A spring 244 is interposed between the first drive gear 245 and the switch gear 243 and a housing 246 is disposed outside the first drive gear 245. Since the outer shape of the housing 246 is formed corresponding to the inner shape of the pull roll 71, it can be inserted and fixed inside the pull roll 71.

 The first drive gear 245 is rotated by the ball chain 72 to rotate the traction roll 71 and the traction screen 73 can be rolled up or lowered as the traction roll 71 rotates. However, the present invention is not limited to the structure in which the first driving gear 245 is formed of a chain gear or the first driving gear 245 and the switch gear 243 are separately formed. The structure of the first drive gear 245 and the switch gear 243 can be variously modified. For example, the first drive gear 245 may be formed of various gears or pulleys according to a method of transmitting power, and the first drive gear 245 and the switch gear 243 may be integrally formed, It is possible.

The first clutch gear 247 may be formed of a combination of a worm wheel gear 247a and a ratchet gear 247b. In other words, the first clutch gear 247 is provided with the worm wheel gear 247a along the outer peripheral surface thereof, and the ratchet gear 247b is formed in the rotational axis direction (the y direction in Fig. 12). The worm wheel gear 247a is engaged with the second driving gear 261 formed on the opening / closing rod 26 and receives power. The second driving gear 261 may be formed in the form of a worm gear along the outer circumferential surface of the opening and closing rod 26 and partially formed on the outer circumferential surface of the opening and closing rod 26 in contact with the worm wheel gear 247a. The opening / closing rod 26 is exposed to the outside of the first supporting body 24 at one end thereof, so that it can be operated by the user. The second clutch gear 248 is rotatable by engaging with the ratchet gear 247b of the first clutch gear 247 since the ratchet gear 248a is formed on the surface of the second clutch gear 248 in contact with the first clutch gear 247. [

That is, when the user rotates the opening / closing rod 26, the second drive gear 261 rotates to rotate the first clutch gear 247 and the second clutch gear 248, and the second clutch gear 248 rotates The opening / closing roll 21 is rotated and the amount of light projected onto the roll screen 10 is adjusted. The opening and closing means for rotationally driving the opening / closing roll 21 is formed in a gear structure, so that the opening and closing roll 21 can be rotated more stably.

The first support body 24 is engaged with the first support cover 27 and accommodates a part of the switch gear 243, the first clutch gear 247, and the opening / closing rod 26 on the inner side. At this time, the first driving gear 245, the housing 246, the second clutch gear 248, and a part of the first rotating shaft 241, the second rotating shaft 242, and the opening / And is exposed to the outside of the cover 27. Since the outer shape of the second clutch gear 248 is formed corresponding to the inner shape of the second housing 254 accommodated in one end of the opening and closing roll 21, the second clutch gear 248 can be inserted and fixed to the inside of the second housing 254 have.

The second supporting body 25 supports the pulling roll 71 and the opening and closing roll 21 together with the first supporting body 24 and is provided with a first supporting body 24 and a second supporting body 25 which serve as rotation axes of the pulling roll 71 and the opening / And includes a shaft 253 and a second shaft 256. The first housing 251 and the first coil spring 252 are interposed between the pulling roll 71 and the first shaft 253 and the second housing 251 and the first coil spring 252 are interposed between the opening and closing roll 21 and the second shaft 256. [ 254 and the second coil spring 255 are interposed. The first housing 251 is engaged with the pulling roll 71 to fix the pulling roll 71 to the first shaft 253 and the second housing 254 is coupled to the opening and closing roll 21 to engage the second shaft 256). The first coil spring 252 acts as a buffer between the pulling roll 71 and the first shaft 253 so that the pulling roll 71 can rotate smoothly. The second coil spring 255 acts as a buffer between the opening and closing rolls 21 and the second shaft 256 so that the opening and closing rolls 21 can rotate smoothly.

On the other hand, the winding portion 30 includes a winding rod 31, a pair of body portions 32, and an elastic member 58. The body portion 32 includes a body 42, a plug 45, (311).

The body 42 rotatably supports the take-up rod 31 and fixes the draw bar 60. A draw pin 42a is formed at the upper center and a first fastener 42c is formed at the lower center . A first body protrusion 43 is formed on the upper side of the pull tab 42a and a second body protrusion 44 is formed on the outer side of the first fastener 42c. The first body protrusion 43 and the second body protrusion 44 protrude from the inner surface of the body 42 in contact with the winding rod 31. The first body protrusion 43 protrudes from the inner side of the pulling bar 60 And the second body projection 44 is received in the inside of the winding rod 31 through the plug 45. The second body protrusion 44 has a hexagonal hole 42e in which a hexagonal bar 311 to be described later is inserted. The hexagonal hole 42e and the first coupling hole 42c communicate with each other.

The plug 45 is inserted into the second body projection 44 so that one side rotatably contacts the inner surface of the body 42 and the other side is inserted to the inside of the winding rod 31. Although the outer shape of the plug 45 is shown in the figure as being formed in a ten-sided shape and inserted into the wind-up stick 31, it is not limited thereto and can be variously modified. For example, the outer shape of the plug 45 to be inserted into the take-up rod 31 may be formed corresponding to the shape of the hollow groove 31b of the take-up rod 31. [ The plug 45 is fixedly inserted into the winding rod 31 and rotates integrally with the winding rod 31.

The pair of bodies 42 are connected to each other by a hexagonal bar 311. The hexagonal bar 311 is a rod-like member whose outer shape is hexagonal and passes through the hollow groove 31b of the winding rod 31 and is inserted and fixed in a hexagonal hole 42e formed in the body 42 at both ends. However, the outer shape of the hexagonal bar 311 is not limited to a hexagonal shape, and may be formed of a polygon such as a triangle, a pentagon, or the like. At this time, the hexagonal hole 42e formed in the second body projection 44 may be deformed corresponding to the outer shape of the hexagonal bar 311. [ The hexagonal bar 311 is formed with threaded holes 311a on the inner side of both end portions thereof. The threaded hole 311a is formed at a position corresponding to the first fastening hole 42c, communicates with the first fastening hole 42c, is threaded inward, and can be fastened with a male screw. When the male screw is fastened to the first fastening hole 42c and the screw hole 311a, the hexagonal bar 311 is fixed to the body.

The holding groove 31b of the winding rod 31 accommodates the fixing body 51, the driving body 52, and the elastic member 58.

The fixing member 51 is a tubular member having a through hole therein and is fixedly inserted into the hollow groove 31b of the winding rod 31 and rotates integrally with the winding rod 31. [ In other words, the fixing member 51 is interposed between the winding rod 31 and the hexagonal bar 311 and rotates integrally with the winding rod 31. Since the inner shape of the through hole (not shown) passing through the fixture 51 is formed to be larger than the outer periphery of the hexagonal bar 311 at this time, the fixture 51 is wound around the hexagonal bar 311 And can rotate together with the rod (31). Although the outer shape of the fixing member 51 is shown as having a ten-figure structure on the drawing, the shape of the fixing member 51 is not limited thereto, and the outer shape of the fixing member 51 is formed corresponding to the shape of the hollow groove 31b It is possible.

The driving body 52 is a tubular member having an inner portion penetrated, and is interposed between the winding rod 31 and the hexagonal bar 311. At this time, a through hole (not shown) passing through the driving body 52 may have a hexagonal shape whose inner shape is slightly larger than the outer circumference of the hexagonal bar 311 and may be fixed to the outside of the hexagonal bar 311.

The elastic member (58) is interposed between the fixing body (51) and the driving body (52). One end of the elastic member 58 is connected to the fixing body 51 and rotates integrally with the fixing body 51 and the other end is connected to the driving body 52 and fixed. In other words, one end of the elastic member 58 is connected to the winding rod 31 via the fixing body 51, and the other end is connected to the hexagonal bar 311 through the driving body 52. Both ends of the elastic member 58 can be inserted and fixed since the fixed body 51 and the driving body 52 are formed with rectangular grooves extending in the rotational axis direction (y direction in Fig. 12) on the outer peripheral surface. One end of the elastic member 58 is fixed to the hexagonal bar 311 by the driving body 52 and the other end is connected to the winding rod 31 by the fixing member 51 so that the winding rod 31 is rotated by the roll screen 10 can be wound. That is, when the fixing member 51 is rotated while the driving body 52 is fixed to the hexagonal bar 311, the elastic member 58 is twisted and elastic energy is stored. When the fixing member 51 is inserted into the hollow groove 31b of the winding rod 31 in this state, the elastic energy is lost and the elastic member 58 is rotated in the reverse direction. As a result, the fixing body 51 and the winding rods 31 rotate and the roll screen 10 can be wound.

Hereinafter, the operation of the roll blind 1 according to another embodiment of the present invention will be described in detail with reference to FIG.

Fig. 14 is an operation diagram for explaining a light amount adjustment operation of the roll blind. Fig.

The roll blind 1 according to another embodiment of the present invention rotates the opening and closing roll 21 by rotating the opening and closing rod 26 formed with the second driving gear 261 and rotates the opening and closing roll 21 as the opening and closing roll 21 rotates The light amount of the roll screen 10 is adjusted.

Fig. 14 (a) is a view showing a state in which light is blocked by a roll screen, and Fig. 14 (b) is a view showing a state in which light is transmitted by a roll screen.

The roll screen 10 can be disposed at a predetermined position by rotating the ball chain 72 before adjusting the amount of light projected onto the roll screen 10. [ The first drive gear 245 rotates by the rotation of the ball chain 72 and the first drive gear 245 rotates the draw roll 71 to wind up or unroll the draw screen 73. The roll screen 10 is rolled up or pulled down by the winding rods 31 by the traction screen 73. A traction screen 73 located in front of the roll screen 10 blocks the moire phenomenon of the roll screen 10.

14 (a), when the opening and closing rod 26 rotates in the first rotational direction (clockwise direction in FIG. 14 (a)), the second drive gear 261 and the worm wheel gear 247a Are engaged with each other and the first clutch gear (see 247 in Fig. 13) is rotated. The first clutch gear 247 also rotates the second clutch gear (see 248 in Fig. 13), thereby causing the opening and closing roll 21 to rotate in the clockwise direction. The interval between the first screen 11 and the second screen 12 fixed to the opening and closing roll 21 is minimized by rotating the opening and closing roll 21 in the clockwise direction. At this time, the plurality of third screens 13 are vertically arranged between the first screen 11 and the second screen 12 to block the transmission of light.

14 (b), when the opening and closing rod 26 is rotated in the second rotation direction (counterclockwise in FIG. 14 (b), see arrows), the second drive gear 261 is rotated, And the worm wheel gear 247a engage with each other and the first clutch gear 247 rotates. The second clutch gear 248 is also rotated by the first clutch gear 247, so that the opening and closing roll 21 is rotated counterclockwise. The interval between the first screen 11 and the second screen 12 is maximized by the rotation of the opening / closing roll 21. At this time, the plurality of third screens 13 are arranged horizontally between the first screen 11 and the second screen 12 to transmit light.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: Roll blind 10: Roll screen
11: first screen 12: second screen
13: Third screen 20: Support
21: open / close roll 22: open / close chain
23: support frame 24: first support body
25: second support body 26: opening / closing rod
27: first support cover 30:
31: winding rod 31a: indent groove
31b: hollow groove 32:
33: socket portion 34: socket housing
34a: first passage 35: connector
35a: second passage 36: retaining ring
37: socket block 37a: third passage
37b: space 38: adjusting hole
39: protrusion 40:
41: Brake spring 41a:
42: body 42a:
42b: winding hole 42c: first fastening hole
42d: second fastener 42e: hexagonal
43: first body projection 44: second body projection
45: plug 45a: winding hole
45b: fastening hole 46:
47: fixing part 48: winding projection
49: fastening protrusion 50: elastic part
51: Fixture 52:
53: driving frame 54: first driving projection
55: driving shaft 56: second driving projection
57: fixing protrusion 58: elastic member
59: fixing rod 60: pull bar
60a: Traction groove 60b: Traction hole
70: pull portion 71: pull roll
72: ball chain 73, 73a: traction screen
74: Weight bar 100:
241: first rotating shaft 242: second rotating shaft
243: switch gear 244: spring
245: first driving gear 246: housing
247: first clutch gear 247a: worm wheel gear
247b: ratchet gear 248: second clutch gear
248a: ratchet gear 251: first housing
252: first coil spring 253: first shaft
254: second housing 255: second coil spring
256: second shaft 261: second drive gear
311: hexagonal bar 311a: screw hole

Claims (11)

A roll screen including a first screen and a second screen formed to overlap with each other and transmitting light, and a plurality of third screens connecting between the first screen and the second screen and blocking light;
A support for fixing an upper end of the roll screen;
A pair of body parts connected to each other so as to be rotatably connected to both ends of the wind-up rod, one end connected to the wind-up rod and the other end connected to at least one of the pair of body parts A winding part including an elastic member connected to the winding part;
A traction screen having one end connected to the winding section to pull up the winding section and to overlap the first screen and the second screen and transmit the light;
A traction roll rotatably coupled to the support and coupled to the other end of the traction screen to wind up or unwind the traction screen; And
And pulling means for rotationally driving the pulling roll,
Wherein the elastic member provides an elastic force to the winding rod to wind the roll screen,
Wherein the winding screen pulls up the roll screen when the traction screen pulls up the winding section, and the winding rod releases the roll screen when the traction screen releases the winding section. delete delete The method according to claim 1,
Wherein the first screen, the second screen, and the traction screen are each formed as a net through which light is at least partially transmitted, wherein the traction screen has different grid patterns with at least one of the first screen and the second screen Roll blinds. The method according to claim 1,
Further comprising a pulling bar connecting the pair of body parts, wherein the pulling screen is secured to the pulling bar at one side. 6. The method of claim 5,
Wherein the traction screen has one side fixed to the pull bar and the lower end hanging down to overlap the winding rods. The method according to claim 1,
A socket portion coupled to one of the pair of body portions;
A ring-shaped elastic member coupled to an inner or outer peripheral portion of the socket portion and having a locking portion formed on at least one of the opposite ends thereof, wherein when the locking portion is compressed in a first direction, A brake spring for releasing engagement with the socket portion when a pressure is applied in a second direction opposite to the direction of the first spring;
A driving frame coupled to the winding rods and having a first driving protrusion for restricting rotation of the winding rods by applying pressure in the first direction to the locking rods;
And a second driving protrusion rotatably coupled to the driving frame and releasing the braking force of the brake spring by applying a pressure to the engaging portion in the second direction. 8. The method of claim 7,
Wherein the socket portion further includes a through hole communicating with the outside of the body portion and the driving rod, and the driving rod further includes an adjusting hole through which the adjusting rod for rotating the driving rod is inserted through the through hole. 8. The socket according to claim 7,
A socket housing coupled to the take-up bar; and a socket block rotatably coupled to the socket housing,
Wherein the socket block is fixed to the body portion and rotation is restricted. 8. The method of claim 7,
Wherein the first driving projection and the second driving projection are each in the form of a protruding arc and are arranged on the same plane with each other. The method according to claim 1,
An opening / closing roll rotatably coupled to the support portion and having an upper end coupled to the first screen and an upper end of the second screen, respectively;
Closing means for rotationally driving the opening / closing roll,
Wherein the first screen and the second screen are coupled in parallel at different positions of the open / close roll, respectively.

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