KR200375899Y1 - Roll blind with improved structure for regulating a light - Google Patents

Abstract

The present invention relates to a roll blind with an improved brightness control structure.

The present invention includes a brightness adjusting rod installed in parallel with the axis of the winding rod with a predetermined distance from the winding rod; The roll screen is composed of alternating transparent and translucent portions, and the roll screen is formed in the form of a closed loop having a weight bar connected to the lower end thereof; The first and second brackets are rotatably supported between each end of the gongbong rod and each inner end of the frame, and one side of each of the first and second brackets separately protrudes outwardly and each spacer Both ends of the brightness adjustment rod is fixed to; A torsion spring is interposed between the rotational shaft of the take-up driver and the first bracket to restrain and release the first bracket and the take-up driver. A limiting protrusion protrudes on one side of the outer circumferential surface of the first bracket, and the limiting protrusion is formed on one end plate of the frame. A corresponding stopper protrudes, and the spacer of the first bracket protrudes to facilitate contact with one side of the frame.

Description

Roll blind with improved structure for regulating a light}

The present invention relates to a roll blind, and more particularly, to a roll blind having a brightness control structure to further improve the operability of the brightness control.

In general, the curtain is installed on the window or entrance side of a building, and is used for the purpose of blocking light, blocking external eyes, soundproofing, soundproofing, cold protection, etc. With the combination, it is emerging as an important element of interior decoration to improve the interior aesthetics. There are different types of curtains depending on their form and how they work.

Among these various kinds of curtains, roll blinds are a widely used trend in recent years.

Such a conventional roll blind, as shown in Figure 1, a frame having a predetermined width and length corresponding to the width and length of the window, the end plate fixed to the left and right ends of the frame, and inside the end plate A winding rod which is rotatably supported, a winding driver fixedly connected to one end of the winding rod, an elevating drive line wound in an orbital manner to the winding driver, and a roll screen wound on the winding rod. Is done.

With this configuration, the roll blind is driven to rotate in the forward and reverse direction when the drive line for pulling up and down is pulled, and thus the winding rod is also rotated in the forward and reverse direction so that the roll screen is unfolded or wound downward from the winding rod to cover the window. Will be adjusted.

However, such a conventional roll blind has a disadvantage in that the amount of incoming light cannot be adjusted at all when the roll screen is spread over the front of the window.

Korean Utility Model Publication No. 20-279166 (name: roll blender with brightness control) has been disclosed to overcome this disadvantage.

In the above-described pre-registration proposal, the binder paper is double-installed on the winding rod, and the winding rod is rotated in the forward and reverse directions within a predetermined range to overlap the light-transmitting portion and the light-transmitting portion of the double-blended paper, thereby controlling the amount of light flowing into the room. It was configured to be.

However, the pre-registration proposal has a functional limitation that the brightness adjustment function can be performed only when the double blind paper is fully extended from the top to the bottom of the window.

Accordingly, the present applicant has devised and disclosed a domestic registered utility model publication No. 20-0340030 (name: roll blind with improved brightness adjustment function) in order to overcome the disadvantages of the above-mentioned pre-registration proposal.

The applicant's pre-registration proposal is composed of a winding driver that spreads or folds the roll screen up and down and a brightness control driver that alternately overlaps the roll screen.

Accordingly, the applicant's pre-registration proposal is configured to perform the function of unfolding and folding the roll screen by the take-up driver, and also perform the function of adjusting the brightness of the roll screen by the brightness adjusting driver. It is made very complicated, and the components are consumed a lot to increase the manufacturing cost.

In addition, the pre-registration proposal has a disadvantage in that the whole operation is very cumbersome as the roll screen unfolding and folding functions and the roll screen brightness adjusting function must be performed separately.

The present invention has been devised in view of the above, and by adopting a very simple structure, not only improves the operability of the brightness control, but also improves the brightness control to reduce the manufacturing cost by reducing the required components. It is to provide a roll blind having a structure.

A first aspect of the present invention for achieving the above object is a winding rod rotatably supported on the inner end of the end plate of the frame fixed to the upper end of the window, a rotary shaft fixed to one side end of the winding rod and the rotary shaft In a roll blind comprising a take-up driver composed of a rotating body integrally formed on the winding drive, a lifting and lowering drive line wound on a rotating body of the take-up driver in a closed loop form, and a roll screen wound on the take-up rod. ,

And a brightness adjusting rod disposed parallel to the axis of the winding rod with a predetermined distance from the winding rod;

The roll screen is composed of alternating transparent and translucent portions, and the roll screen is formed in the form of a closed loop having a weight bar connected to the lower end thereof;

The first and second brackets are rotatably supported between each end of the gongbong rod and each inner end of the frame, and one side of each of the first and second brackets separately protrudes outwardly and each spacer Both ends of the brightness adjustment rod is fixed to;

A torsion spring is interposed between the rotary shaft of the take-up driver and the first bracket to restrain and release the first bracket and the take-up driver.

Preferably, the torsion spring is composed of a coil portion wound in a coil shape on a rotation axis of the winding actuator and first and second elastic legs mounted on a mounting portion formed on one side of the first bracket, and the first elastic leg is made of a first elastic leg. 1 is elastically installed between the protrusion formed on the mounting portion of the bracket and the inner wall surface of the mounting portion, the second elastic leg is installed to project outward through the opening formed on the outside of the mounting portion of the first bracket to contact one side of the frame. .

Preferably, the first bracket is characterized in that a limiting protrusion protrudes on one side of the outer circumferential surface thereof, and a stopper corresponding to the limiting protrusion protrudes on one end plate of the frame.

A second aspect of the present invention includes a brightness adjusting rod installed in parallel with the axis of the winding rod with a predetermined distance from the winding rod;

The roll screen is composed of alternating transparent and translucent portions, and the roll screen is formed in the form of a closed loop having a weight bar connected to the lower end thereof;

The first and second brackets are rotatably supported between each end of the gongbong rod and each inner end of the frame, and one side of each of the first and second brackets separately protrudes outwardly and each spacer Both ends of the brightness adjustment rod is fixed to;

A through hole is formed in the center of the first bracket, and the outer diameter surface of the packing member having a donut shape is fixedly attached to the inner diameter surface of the through hole, and the inner diameter surface of the packing member is set to a size smaller than the outer diameter surface of the winding rod. The lubricant layer is interposed between the inner diameter surface of the packing member and the outer diameter surface of the winding rod.

Preferably, the packing member is formed of any one of an O-ring and an oil seal.

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

1 to 4 show roll blinds according to a first embodiment of the present invention.

As shown, the roll blind of the present invention is a winding rod 40 rotatably supported inside both ends of the frame 10 having a predetermined width and length, and fixedly connected to one end of the winding rod 40. Winding driver 30, a drive line 31 for lifting and lowering wound in the form of a closed loop in this winding driver 30, and the winding drive 30, and the roll screen 41 wound around the winding rod 40. ), And the brightness adjustment rod 60 is installed spaced apart from the winding rod 40 by a predetermined interval.

Frame 10 is fixedly installed on the upper end of the window, as shown in Figure 1, has a predetermined width corresponding to the width of the window, the end plate (11, 12) is fixedly installed at both ends do.

The winding rod 40 is rotatably supported on the inner surfaces of the end plates 11 and 12 of the frame 10, and as shown in FIGS. 3 and 5, predetermined mounting in the longitudinal direction on the outer circumferential surface of one side thereof. A groove 42 is formed, and a fixing bar 43 to which one side of the roll screen 41 to be described later is attached is inserted into the mounting groove 42, and a roll screen 41 is disposed below the winding rod 40. The weight bar 44 is connected to each other, and the mounting groove 42 is formed on one side of the weight bar 44, and a fixing bar having one side of the roll screen 41 bonded to the mounting groove 42. 43 is inserted.

The take-up driver 30 is rotatably installed integrally with the take-up rod 40, and as shown in FIG. 2, a rotary shaft 31 and the rotary shaft 31 which are fitted inside one side end of the take-up rod 40. ) And a plurality of grooves 32a are formed at regular intervals on the outer circumferential surface of the rotating body 32, and the driving device for raising and lowering described later on the rotating body 32 The string 33 is wound in the form of a closed loop.

The winding driver 30 is installed between one end plate 11 of the frame 10 and one end of the winding rod 40 and is rotatably supported on one end plate 11 of the frame 10 while being wound. One side end of the rod 40 is fixedly connected via the rotation shaft 31.

The fixed connection structure of the winding driver 30 and the winding rod 40, as shown in Figure 2, the rotary shaft 31 of the winding driver 30 is interference fit inside the one end of the winding rod (40) Various ways may be applicable, such as the manner in which such methods are performed. The winding rod 40 is configured to rotate together by the rotational driving of the winding driver 30 by the fixed connection structure of the winding driver 30 and the winding rod 40.

The elevating drive line 33 is wound in the form of a closed loop on the rotating body 32 of the take-up drive 30, and as the drive line 33 for pulling up and down is pulled, the take-up driver 30 and the take-up rod 40 are pulled out. It is configured to rotate in the forward and reverse directions.

More specifically, as shown in Figs. 2 to 4, the elevating drive line 33 is formed of a plurality of beads 33a are connected by a wire 33b, each bead 33a is wound It is wound in such a manner as to engage with the groove portion 32a formed in the rotating body 32 of the driver 30. Accordingly, when pulling up and down the drive rope 33, the rotating body 32 is rotated in a predetermined direction, and in conjunction with this, the rotary shaft 31 and the winding rod 40 of the take-up driver 30 also rotates. .

On the other hand, the configuration of the elevating drive line 33 and the winding driver 30 is not limited to the above-described form, other various forms may be applicable.

One side of the roll screen 41 is fixedly connected to the mounting groove 42 of the winding rod 40 described above, and wound in a closed loop shape in which a weight bar 44 is connected to a lower end thereof. The brightness adjustment rod 60 which will be described later is disposed in the bellows of the roll screen 41 so as to be rotatable up and down. In addition, the roll screen 41 has a form in which the transparent portion 41a and the translucent portion 41b are alternately arranged.

In this way, the brightness adjustment rod 60 is disposed in the closed loop of the roll screen 41 so as to be rotatable in the vertical direction, so that one side of the roll screen 41 is raised or lowered so that the transparent portion 41a of the roll screen 41 is rotated. And the translucent portions 41b are alternately overlapped to adjust brightness of the incoming light.

1, the brightness adjusting rod 60 is spaced apart from the outer circumferential surface of the winding rod 40 by the first and second brackets 51 and 52 at predetermined intervals on the axis of the winding rod 40. Parallel to each other. In addition, the brightness adjustment rod 60 is configured to be rotated by the take-up driver 30 as it is constrainably restrained on the take-up driver 30 via the first bracket 51.

Between each end of the winding rod 40 and each end plate 11, 12 of the frame 10, the first and second brackets 51, 52 are rotatably supported individually, and the first and second The brackets 51 and 52 have through-holes formed in the center thereof, and spaced apart protrusions 51a and 52a protrude outwardly at one side thereof.

Both ends of the brightness adjusting rod 60 are fixed across the spaced apart projections 51a and 52a of the first and second brackets 51 and 52 to be predetermined from the winding rods 40 of the brightness adjusting rod 60. It is installed in equilibrium with respect to the axis of the winding rod 40 while being spaced apart.

As shown in FIGS. 2 and 4, the first bracket 51 is disposed between one end of the winding rod 40 and the rotation shaft 31 of the winding driver 30 coupled thereto, and on one side thereof in an outer diameter direction. In the portion facing the take-up driver 30 of the spaced protrusion 51a protruding into the mounting portion 51c to which the first and second elastic legs 72 and 73 of the torsion spring 70 to be described later are fitted, A protrusion 51d protrudes in the axial direction of the winding rod 40 inside the mounting portion 51c, and an opening 51e having a predetermined width is formed on the outer wall surface of the mounting portion 51c.

On the other hand, the first bracket 51 is configured to be intermittently restrained and released on the rotary shaft 31 and the take-up rod 40 of the take-up driver 30 by the spring force of the torsion spring 70.

The torsion spring 70 is a spring that receives a torsional stress in a rotational direction with respect to the axial direction thereof, as shown in FIGS. 2 to 4, and a coil wound in a coil shape on the outer circumferential surface of the rotation shaft 31 of the take-up driver 30. First and second elastic parts protruding radially from one side of the portion 71 and the coil portion 71 to be mounted on the mounting portion 51b formed inside the spaced protrusion 51a of the first bracket 51. It consists of elastic legs 72 and 73.

The first elastic leg 72 of the torsion spring 70 is provided between the projection 51d of the mounting portion 51b of the first bracket 51 and the inner wall surface of the mounting portion 51b, and the second elastic leg ( 73 is installed to protrude outward through the opening 51e formed outside the mounting portion 51b of the first bracket 51, so that the first and second elastic legs 72, 73 are mutually opposite in the circumferential direction. It is configured to apply an elastic force.

By this torsion spring 70, the rotation shaft 31 of the first bracket 51 and the take-up driver 30 are intermittently restrained and released from each other.

That is, the torsion spring 70 acts to restrain the first bracket 51 to the winding driver 30 by the spring force in the circumferential direction, and thus the first bracket 51 is the winding driver 30. It is linked to the rotating shaft 31 of the). In this state, when the first bracket 51 is rotated in association with the rotational operation of the winding driver 30, the roll screen 41 is alternately overlapped with the translucent portion 41b and the transparent portion 41a. The brightness of light from outside is controlled.

On the other hand, the intermittent restraint relationship between the first bracket 51 and the take-up driver 30 of the present invention is released by limiting the rotation angle of the first bracket 51.

In the configuration for releasing the restraint of the first bracket 51 and the winding driver 30 as described above, the limiting protrusion 51c protrudes in the outer diameter direction from one side opposite to the spaced protrusion 51a of the first bracket 51. And a stopper 15 corresponding to the limiting protrusion 51c protrudes from one end plate 11 of the frame 10 and is attached to the mounting portion 51b of the first bracket 51. The second elastic leg 73 of the protruding to the outside of the mounting portion 51b is made to be installed to be in contact with the front surface of the frame (10).

By such a configuration, the first bracket 51 is provided with a relaxation force in the circumferential direction on the coil part 71 side of the torsion spring 70 due to the limited rotation angle thereof, so that the first bracket 51 and the winding driver 30 is made to release.

Looking at the release relationship of the first bracket 51 and the winding driver 30 in more detail with reference to FIG.

In FIG. 3, when the winding driver 30 is rotated in a clockwise direction (arrow CW direction) and the limiting protrusion 51c of the first bracket 51 is caught by the stopper 15 of the frame 10, the torsion spring ( The first elastic leg 72 of 70 is caught in the projection 51d of the mounting portion 51b of the first bracket 51, so that the first bracket 51 is no longer clockwise CW. In this case, the releasing force in the circumferential direction is applied to the coil portion 71 of the torsion spring 70 so that the first bracket 51 is restrained on the rotation shaft 31 of the take-up driver 30. The state is released, and the first bracket 51 is free with respect to the take-up driver 30.

In addition, in FIG. 3, when the winding driver 30 rotates in the counterclockwise direction (arrow CCW direction), the spaced protrusion 51a of the first bracket 51 is also counterclockwise (arrow CCW direction) in association with this. By rotating, the second elastic leg 73 of the torsion spring 70 is caught on the front face of the frame 10 (dashed line in FIG. 3), whereby the first bracket 51 is further counterclockwise. Abnormal rotation is prevented, and accordingly, the releasing force in the circumferential direction acts on the coil portion 71 of the torsion spring 70 so that the first bracket 51 is the rotation shaft 31 and the winding rod of the winding driver 30. The restrained state at 40 is released, and the first bracket 51 is freed with respect to the take-up driver 30.

As such, each of the restricting protrusion 51c of the first bracket 51 or the second elastic leg 73 of the torsion spring 70 is caught on the front surface of the stopper 15 or the frame 10 to be in contact with the winding driver. When the restraint state for the 30 is released, the take-up driver 30 rotates and drives only the take-up rod 40 by its rotational operation to unfold or fold the roll screen 41.

The operation relationship of the present invention configured as described above will be described in detail as follows.

First, each of the restricting protrusion 51c of the first bracket 51 and the second elastic leg 73 of the torsion spring 70 do not contact the stopper 15 of the frame 10 and one side of the frame 10. When not in the state, the first bracket 51 is reliably restrained on the winding driver 30 side by the spring force in the circumferential direction acting on the coil portion 71 of the torsion spring 70.

Accordingly, the first bracket 51 is interlocked with the rotation shaft 31 of the take-up driver 30, and as shown in FIG. 5B in this state, the first bracket is interlocked with the rotation operation of the take-up driver 30. 51 and the brightness adjustment rod 60 is rotated, so that the brightness adjustment rod 60 is rotated over one side of the roll screen 41 to alternate the transparent and translucent portions (41a, 41b) Overlapping to adjust the brightness of the light flowing from the outside, the brightness adjustment of the light is irrespective of the folding or unfolding position of the roll screen 41 (that is, regardless of the degree of obscurity of the window by the roll screen 41) )

Next, each of the restricting protrusion 51c of the first bracket 51 and the second elastic leg 73 of the torsion spring 70 is in contact with one side of the stopper 15 and the frame 10 of the frame 10. In this case, the first bracket 51 no longer rotates in the direction in which the winding driver 30 originally rotates, and thus, between the first bracket 51 and the rotation shaft 31 of the winding driver 30. A relaxation force in the circumferential direction is applied to the coil spring 70 interposed therebetween so that the first bracket 51 is restrained from the rotation shaft 31 of the take-up driver 30.

In this state in which the first bracket 51 is released from the restraint state of the rotation shaft 31 of the winding driver 30, the first and second brackets 51 and 52 are wound as shown in FIG. 5A. Rotation unaffected by the take-up driver 30 is free on both ends of 40 so that each of the spacers 51a and 52a is directed downward by its own weight.

In this state, when the user rotates the take-up driver 30 in the forward and backward direction, the take-up rod 40 is rotated in the same direction as the rotation direction of the take-up driver 30 to roll or roll the roll screen 41 by folding or unfolding it. It is possible to adjust the degree of obscurity of the window by the screen (41).

6 to 8 is a view showing a roll blind according to a second embodiment of the present invention.

As shown, the second embodiment of the present invention replaces the torsion spring 70 for restraining and releasing the first bracket 51 to the winding driver 30 or the winding rod 40, the O-ring 80 is applied do.

In general, the O-ring 80 is used as a sealing packing member made of a rubber material having excellent elasticity, but the O-ring 80 applied to the second embodiment of the present invention uses the first bracket (B) using its elastic force and frictional force. It is a feature of the technical configuration that the 51 is restrained and released on the winding driver 30 or the winding rod 40 side.

The O-ring 80 has an outer diameter surface fixedly attached to the inner diameter surface 51f of the first bracket 51 by an adhesive or the like, and the inner diameter of the O-ring 80 is slightly smaller than the outer diameter of the winding rod 40. One side end of the winding rod 40 to the inner diameter surface of the O-ring 80 is configured to be interference fit.

In addition, a predetermined lubricating oil layer is interposed between the inner diameter surface of the O-ring 80 and the outer circumferential surface of one side end of the winding rod 40.

By this O-ring 80, the first bracket 51 and the winding rod 40 is intermittently restrained and released.

That is, since the inner diameter of the O-ring 80 is set to a size slightly smaller than the outer diameter of the winding rod 40, one side end of the winding rod 40 is forcibly fitted onto the inner diameter surface of the O-ring 80, and thus the O-ring ( A friction force acts between the inner diameter surface of the 80 and the outer circumferential surface of one side end of the winding rod 40, and the first bracket 51 is on the outer circumferential surface of the one end of the winding rod 40 by the frictional force of the O-ring 80. Is constrained. When the first bracket 51 is rotated in conjunction with the rotation operation of the winding driver 30 in the state in which the first bracket 51 is restrained on the winding rod 40, the transparent portion 41a of the roll screen 41 is rotated. ) And the translucent portion 41b alternately overlap to adjust the brightness of the light flowing from the outside.

On the other hand, the present embodiment adopts a configuration that limits the rotation angle of the first bracket 51 to release the restraint of the first bracket 51 and the take-up rod 40, similar to the first embodiment described above.

In the release configuration of the first bracket 51 and the winding rod 40 of the present embodiment, the limiting protrusion 51c protrudes in the outer diameter direction on one side opposite to the spaced protrusion 51a of the first bracket 51, The stopper 15 corresponding to the limiting protrusion 51a protrudes from one end plate 11 of the frame 10, and the spaced protrusion 51a of the first bracket 51 is the stopper 15 or the frame 10. It protrudes to a length capable of contacting the front surface of the).

The operation relationship of such a release configuration is described with reference to FIG.

In FIG. 7, when the winding driver 30 is rotated in a clockwise direction (arrow CW direction) and the limiting protrusion 51c of the first bracket 51 is caught by the stopper 15 of the frame 10, the first bracket ( 51 no longer rotates clockwise, and thus the inner diameter surface and the winding rod of the O-ring 80 by a lubricant layer interposed between the inner diameter surface of the O-ring 80 and the outer peripheral surface of one end of the winding rod 40. The restraint (ie, interference fit) between the outer circumferential surfaces of 40 is released smoothly so that the first bracket 51 is free of the winding rod 40.

In FIG. 7, the winding driver 30 is rotated counterclockwise (arrow CCW direction) so that the limiting projection 51c of the first bracket 51 is caught by the stopper 15 or the front surface of the frame 10. In FIG. 7 (dashed line part of FIG. 7), the first bracket 51 is no longer rotated in the counterclockwise direction, and thus interposed between the inner diameter surface of the O-ring 80 and the outer peripheral surface of one side end of the winding rod 40. The lubricant layer smoothly releases the restraint (ie, interference fit) between the inner diameter surface of the outer ring 80 and the outer peripheral surface of the winding rod 40 so that the first bracket 51 is free of the winding rod 40. do.

As such, as the restricting protrusion 51c or the spaced protrusion 51a of the first bracket 51 is caught and contacted with the front surface of the stopper 15 or the frame 10, the restrained state of the winding rod 40 is reduced. Easily released, the winding driver 30 rotates only the winding rod 40 to perform the spreading and folding operations of the roll screen 41.

9 is a view showing a roll blind according to a third embodiment of the present invention.

As shown, the third embodiment of the present invention is configured to apply the oil seal 90 to replace the O-ring 80 of the second embodiment, the outer diameter surface of the inner diameter surface 51f of the first bracket 51 The inner diameter of the oil seal 90 is set to a size slightly smaller than the outer diameter of the winding rod 40 so that one side end of the winding rod 40 is attached to the inner diameter surface of the oil seal 90. It is forcibly fitted and a predetermined lubricating oil layer is interposed between a contact portion between the inner diameter surface of the oil seal 90 and the outer peripheral surface of one side end of the winding rod 40.

The oil seal 90 is made of an elastic material such as synthetic rubber, and has an annular metal plate 91 and a spring 92 interposed therein, and on the inner surface thereof, the stripper portion 93 and the leaf element wire portion ( 94 is provided to contact the outer peripheral surface of one side end of the winding rod 40 by its elastic force and friction force.

The oil seal 90 is used as a sealing packing member as in the above-described O-ring 80, but in the third embodiment of the present invention, the first bracket 51 is wound around the take-up driver 30 using its elastic force and friction force. ), Or to make it constrained and released on the winding rod 40 side, there is a feature of the technical configuration.

The rest of the configuration and operation are the same as in the second embodiment, so detailed description thereof will be omitted.

The present invention as described above, the brightness adjustment rod 60 is connected to the winding rod 40 by a predetermined interval through the first and second brackets (51, 52), the first bracket 51 is a torsion spring ( 70 is configured to be releasably constrained to the take-up driver 30, the selective rotation operation of the take-up rod 40 and the brightness control rod 60 using only a single lifting and lowering drive line 33 By inducing the roll screen 41 has a feature that can facilitate the unfolding operation and the brightness of the light more easily.

The present invention as described above, as well as further improve the operability of the brightness control, there is an effect that can reduce the manufacturing cost by reducing the required components.

In the above, the present invention has been shown and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiment, and those of ordinary skill in the art to which the present invention belongs, without departing from the spirit of the technical idea of the present invention described in the utility model registration claims below. Various changes can be made.

1 is a front view showing a roll blind according to a first embodiment of the present invention.

Figure 2 is a detailed front sectional view showing an enlarged portion A, B of Figure 1 in the roll blind according to the first embodiment of the present invention.

3 is a side cross-sectional view taken along line III-III of FIG. 1 in the roll blind according to the first embodiment of the present invention;

Figure 4 is an exploded perspective view showing a structure between the winding actuator and the first bracket of the present invention.

5A and 5B show an operating state of the roll blind taken along the line VV of FIG.

Figure 6 is a detailed front sectional view showing a part corresponding to Figure 2 in the roll blind according to a second embodiment of the present invention.

7 is a side cross-sectional view showing a part corresponding to FIG. 3 in the roll blind according to the second embodiment of the present invention.

8 is an exploded perspective view showing a part corresponding to Figure 4 in the roll blind according to a second embodiment of the present invention.

9 is a detailed front sectional view showing a portion corresponding to FIG. 2 in the roll blind according to the third embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: frame 20: end plate

30: winding drive 40: winding rod

60: brightness adjustment rod

Claims (6)

A winding rod comprising a winding rod rotatably supported at an inner end portion of an end plate of a frame fixed to an upper end of a window, a rotating shaft fixedly coupled to one end of the winding rod, and a rotating body integrally formed with the rotating shaft, In the roll blind consisting of a drive line for lifting and lowering wound on a rotating body in the form of a closed loop and rotating the take-up driver, and a roll screen wound on the take-up rod, And a brightness adjusting rod disposed parallel to the axis of the winding rod with a predetermined distance from the winding rod; The roll screen is composed of alternating transparent and translucent portions, and the roll screen has a closed loop shape in which a weight bar is connected to a lower end thereof; The first and second brackets are rotatably supported between each end of the guiding rod and each inner end of the frame, and one side of each of the first and second brackets separately protrudes outwardly. Both ends of the brightness adjustment rod is fixed to the separation projection; Roll blinds with an improved brightness control structure, characterized in that the torsion spring is interposed between the rotating shaft and the first bracket of the take-up driver to restrain and release the first bracket and the take-up driver. The method of claim 1, The torsion spring is composed of a coil part wound in a coil shape on a rotating shaft of a winding driver and first and second elastic legs mounted on a mounting part formed on one side of the first bracket, and the first elastic leg includes a first bracket It is elastically installed between the protrusion formed on the mounting portion of the mounting portion and the inner wall surface of the mounting portion, wherein the second elastic leg is projected outward through the opening formed on the outside of the mounting portion of the first bracket is installed to be in contact with one side of the frame Roll blinds with improved brightness control. The method according to claim 1 or 2, The first bracket has a rolled projection having an improved brightness control structure, characterized in that a limiting protrusion protrudes on one side of the outer circumferential surface thereof, and a stopper corresponding to the limiting protrusion protrudes on one end plate of the frame. A winding rod comprising a winding rod rotatably supported at an inner end portion of an end plate of a frame fixed to an upper end of a window, a rotating shaft fixedly coupled to one end of the winding rod, and a rotating body integrally formed with the rotating shaft, In the roll blind consisting of a drive line for lifting and lowering wound on a rotating body in the form of a closed loop and rotating the winding driver, and a roll screen wound on the winding rod, And a brightness adjusting rod disposed parallel to the axis of the winding rod with a predetermined distance from the winding rod; The roll screen is composed of alternating transparent and translucent portions, and the roll screen has a closed loop shape in which a weight bar is connected to a lower end thereof; The first and second brackets are rotatably supported between each end of the guiding rod and each inner end of the frame, and one side of each of the first and second brackets separately protrudes outwardly. Both ends of the brightness adjustment rod is fixed to the separation projection; A through hole is formed in the center of the first bracket, and an outer diameter surface of the packing member having a donut shape is fixedly attached to the inner diameter surface of the through hole, and the inner diameter surface of the packing member is set to a size smaller than the outer diameter surface of the winding rod. And roll blinds with an improved brightness control structure, characterized in that the lubricant layer is interposed between the inner diameter surface of the packing member and the outer diameter surface of the winding rod. The method of claim 4, wherein Roll packing blinds with an improved brightness control structure, characterized in that the packing member is made of any one of the O-ring and the oil seal. The method according to claim 4 or 5, The first bracket has a rolled projection having an improved brightness control structure, characterized in that a limiting protrusion protrudes on one side of the outer circumferential surface thereof, and a stopper corresponding to the limiting protrusion protrudes on one end plate of the frame.