KR20110056655A - Roll blind limit device - Google Patents

Abstract

According to the present invention, the blind fabric is limited to no longer unfolded after the fabric is unfolded at a height suitable for the installation site (window) in a single roll blind system or a dual roll blind system, so that the blind can be adjusted at an accurate shading position and used conveniently. A roll blind limit device, comprising: a slider which rotates together with a take-up roll on an inside of a take-up roll, and has a screw thread formed therein, and a guide bolt that is screwed into a thread of the slider to provide a moving path of the slider; It is a structure including a movement limiting means having a stopper for limiting movement so that the movement is stopped after the slider moves only a desired distance on the guide bolt in accordance with the rotation of the take-up roll.

According to the roll blind limit device according to the present invention, when the blind is unfolded to shield the room using a single roll blind system or a dual roll blind system, the blind fabric is not stretched any more after being unfolded only by a height suitable for an installation site (window). This makes it easy for the user to adjust the blinds to the correct shading state, and an excellent effect is obtained which is very convenient to use.

Blind System, Blind Fabric, Limit Device, Slider, Guide Bolt

Description

Roll blind limit device {APPARATUS FOR LIMITING A WINDING OF ROLL BLIND}

The present invention relates to a roll blind system that can easily control the indoor shading by using a blind, and more specifically, when the blind fabric is applied by releasing the blind fabric in the up and down direction, the H-shape on the inner guide bolt according to the rotation of the squeeze roll. After the slider moves only a certain distance and the blind fabric is unfolded to a height suitable for the installation location (window), it is restricted to no longer unfolded, so that the blind can be adjusted at the correct shading position and is conveniently used for the roll blind limit device. It is about.

As shown in FIG. 1, the conventional blind system 1 includes a blind fabric 10 arranged adjacent to a window or the like to shield a room, and one winding roll 15 to which the blind fabric 10 is wound. Is provided, one side of the take-up roll 15 is a structure having a chain wheel 20 and the operating chain 25 for rotating it.

Such a conventional blind system 1 is a so-called "single-roll blind system". When the blind fabric 10 disposed adjacent to the window is wound around the take-up roll 15, the blind fabric 10 is lifted upwards. Open the window and let the light go through.

On the contrary, when the blind fabric 10 is released from the take-up roll 15, the blind fabric 10 descends to the lower side to cover the window to shield the room.

Such a conventional single roll blind system 1 has no problem when the blind fabric 10 is wound around the take-up roll 15 and lifted up to the upper side, but is unwound from the take-up roll 15 and descends to the lower side. There is a problem that can not be expanded to a height suitable for the installation site (window) correctly.

The problem is that the user rotates the chain wheel 20 through the operation chain 25 provided on one side of the take-up roll 15, through which the take-up roll 15 is reversely rotated to unwind the blind fabric 10 In such a case, the chain wheel 20 is excessively rotated so that the take-up roll 15 is excessively reversed, and in fact, the chain wheel 20 is excessively rotated, and is actually fixed upward from the light-shielding position P, which should be located in a dotted line in FIG. 1. Position the lower end of the blind fabric 10 in a raised state Δh.

Therefore, the user had to re-manipulate the operation chain 25 to actually position the blind fabric 10 at the unfolded position of the blind fabric 10, which was cumbersome in use.

In Figure 2a is proposed a "dual roll blind system" of Korean Patent No. 10-0768403 developed by the applicant of the present invention.

The conventional dual roll blind system 50 includes a winding roll 60 which is rotatably supported between both side plates 55a and 55b of a ceiling bracket, and the winding roll 60. It is provided side by side between the said side plates 55a and 55b, and the movable winding roll 70 rotates by the blind winding mechanism 80 of one side.

In addition, an upper end portion is fixed to the winding roll 60, and a first blind fabric 64 having a constant width transmissive portion 62a and an opaque portion 62b alternately in the width direction is disposed, and the movable winding roll ( The upper end portion is also fixed to 70, and the second blind fabric 74 which is movable to the left and right and forms a light transmitting portion 72a and an opaque portion 72b corresponding to the first blind fabric 64 is disposed.

In addition, the lower end of the first blind fabric 64 and the second blind fabric 74, the lower bar (COUNTER WEIGHT) is fitted so as to slide in a horizontal direction with respect to the first blind fabric (64) relative to the first blind fabric (64) BAR) 90 is provided.

In the conventional dual roll blind system 50, the user rotates the screw shaft 82 by the blind winding mechanism 80 to change the blind from the light-emitting state to the light-shielding state, or to convert the light-shielding state from the light-shielding state to the light-transmitting state. The second blind fabric 74 connected to the movable take-up roll 70 may be horizontally moved with respect to the first blind fabric 64 of the take-up roll 60 and may be conveniently used by converting the light-shielding state and the light-transmitting state.

However, even in the case of the conventional dual roll blind system 50, when the first and second blind fabrics 64 and 74 are released from the take-up roll 60 and the movable take-up roll 70 and lowered to the lower side, There is a problem in that the first and second blind fabrics 64 and 74 cannot be expanded to a height suitable for the installation site (window).

Such a problem is often caused by the chain wheel 84 being excessively rotated, as shown in FIG. 2B, to excessively reverse the take-up roll 60 and the movable take-up roll 70, and often to the take-up roll 60. The connected first blind fabric 64 is excessively turned in the reverse direction, and as a result, the first blind fabric 64 disposed on the rear side is pulled up to cause the second blind fabric 74 to be lifted up as shown in the photo. It was to let.

Therefore, even in the case of the conventional dual roll blind system 50, the excessive rotation of the take-up roll 60 and the movable take-up roll 70 is limited so that the first and second blind fabrics 64 and 74 are positioned at a desired position. There was an urgent need for the development of technology that could stop it correctly.

The present invention is to solve the conventional problems as described above, the object is

If the blinds of the single-roll blind system or the dual-roll blind system are unscrewed up and down to apply the blinds, the H-shaped slider and the guide bolts must be The present invention provides a roll blind limit device that can be blindly adjusted to an accurate shading state and can be used conveniently.

Another object of the present invention is to adjust the moving distance of the H-type slider on the guide bolt located inside the take-up roll of the single-roll blind system or dual-roll blind system to accurately adjust the vertical movement distance of the blind, and accordingly It is to provide a roll blind limit device that allows the blinds to be extended only to a height suitable for the installation site (window) so that roll blinds of various sizes can be conveniently used.

In order to achieve the above object, the roll blind limit device of the present invention is a device for limiting the moving distance of the blind in a roll blind system, the blind fabric is combined and wound on the outer circumferential surface, forward or reverse by the winding of one side Winding roll to rotate; A slider which rotates together with the take-up roll inside the take-up roll and has a thread formed therein; And a guide bolt threaded into the thread of the slider to provide a movement path of the slider. And a movement limiting means having a stopper for limiting the movement so that the movement is stopped after the slider moves only the desired distance on the guide bolt according to the rotation of the winding roll. In place the blind fabric of the single roll blind system is configured.

Therefore, the present invention can be conveniently used so as to prevent any further unfolding after unfolding the blind fabric of the single-roll blind system in the vertical direction to spread the blind only after the height suitable for the installation site (window).

In addition, the roll blind limit device of the present invention, in order to achieve the above object, in the roll blind system in the apparatus for limiting the movement distance of the blind, the first blind fabric is combined and wound on the outer peripheral surface, by the winding of one side Winding rolls rotating in the forward or reverse direction; A movable winding roll disposed side by side on the winding roll, the second blind far end being coupled to the outer circumferential surface, and rotating in a forward or reverse direction by winding on one side; A slider which rotates together with the take-up roll inside the take-up roll and has a thread formed therein; And a guide bolt threaded into the thread of the slider to provide a movement path of the slider. And a movement limiting means having a stopper for limiting the movement so that the movement is stopped after the slider moves only the desired distance on the guide bolt in accordance with the rotation of the winding roll. Constrained so that the first and second blind fabrics of the dual roll blind system are positioned at the desired spread position.

As described above, when the first and second blind fabrics of the dual roll blind system are unrolled in the vertical direction to apply the blinds, the first and second blind fabrics are unfolded after the first and second blind fabrics are unfolded only by a height suitable for the installation site (window). It can be used conveniently without being prevented.

In addition, the present invention preferably the slider is provided with a H-shaped body having a length corresponding to the inner diameter of the take-up roll, is inserted into the take-up roll to rotate integrally with the take-up roll, the nut inside the body Is fixed by press-fitting, and the nut is screwed to the guide bolt to move linearly along the guide bolt.

And the present invention is preferably the movement limiting means is located in the head of the guide bolt, the first stopper of the circular outer surface to which the guide bolt is fitted and fixed to the inside of the circular stop of the first stopper It has a circular inner surface and the housing is coupled to form a plurality of fixed blades fitted on the inner surface of the take-up roll on the outer peripheral surface, and a second stopper for holding the guide bolt in the interior of the first stopper.

In another aspect, the first stopper is preferably provided with a plurality of protrusions on one side of the outer surface of the housing larger than the inner diameter of the one side of the housing, and is fitted to one end of the inner diameter of the housing, the middle of the inner diameter of the housing A first spring is inserted between the stepped jaw formed in the middle of the outer surface of the first stopper and the first stopper is elastically fixed to the inside of the housing, and the inside of the first stopper is fitted inside the second stopper. A second spring is inserted into and tightly supports the guide bolt toward the first stopper, and the second dropper forms a plurality of projections formed radially outwardly at one end thereof, thereby forming a circumference of the first stopper at the inside of the first stopper. It is elastically fitted into the directional through-holes to be combined.

And the present invention is preferably configured to be able to adjust the position of the slider screwed to the outer surface by rotating the guide bolt is formed by inserting a groove in the head end of the tool including a screwdriver inserted into the head.

In addition, the present invention preferably further comprises a position alignment tool for positioning the guide bolt in the center of the take-up roll by embedding the bushing at one end thereof.

According to the roll blind limit device according to the present invention, when the blind is unfolded to shield the room using a single roll blind system or a dual roll blind system, the H-shaped slider is set on a guide bolt inside the take-up roll according to the rotation of the gurgling roll. By moving only as much as possible so as not to be caught by the stopper of the movement limiting means, the blinds are no longer expanded after being unrolled only by a height suitable for the installation site (window).

Therefore, the present invention, when using a single roll blind system or a dual roll blind system, the blind can be easily adjusted to a precise shading state is very convenient to use.

In addition, according to the roll blind limit device according to the present invention, when the guide bolt is rotated using a tool such as a driver, the H-shaped slider is moved on the guide bolt to adjust the movement distance between the stopper of the movement limiting means. .

In this way, the present invention can accurately adjust the vertical movement distance of the blind through the adjustment of the position of the H-type slider on the guide bolt, and accordingly to expand the blind only by a height suitable for various installation places (windows) single roll blinds of various specifications A good effect is obtained that can conveniently use the system or the dual roll blind system.

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

Roll blind limit device 100 according to the present invention, as shown in Figure 3, the blind fabric 112 is combined and wound on the outer circumferential surface, it is provided with a winding roll 110 to rotate in the forward or reverse direction by the winding of one side do.

As shown in the cross-sectional view in Figures 4a to 4d, the winding roll 110 forms a fabric groove 114 to which the blind fabric 112 is fitted to one side of the outer surface thereof, and has a cylindrical hollow structure. .

The winding rolls 110 are fixed at both ends thereof so as to be rotatable inside the side plates 105a and 105b, and one side of the winding rolls 110 is formed with a chain wheel 120 to operate the chain 130. ) Is wound, and the other side is rotatable by being fitted to the housing 180 of the movement limiting means 160 described later.

That is, when the user pulls one side of the operation chain 130 and rotates the chain wheel 120 forward, the winding roll 110 is rotated forward by the winding roll 110 connected to the chain wheel 120. Pulling the other side of the chain 130 rotates the chain wheel 120 reversely, the winding roll 110 connected to the chain wheel 120 is rotated reversely.

Therefore, the blind fabric 112 wound around the winding roll 110 according to the forward and reverse rotation of the winding roll 110 is wound or unwinded on the winding roll 110. Inside the winding roll 110, the slider 140 rotates together with the winding roll 110, and a thread is formed therein.

The slider 140 is provided with a guide bolt 150 is screwed into the screw thread therein to provide a moving path of the slider 140, such a slider 140 is shown in cross section in Figure 4b. Likewise, the H-shaped body 142 having a length corresponding to the inner diameter of the take-up roll 110, and is fitted inside the take-up roll 110 to rotate integrally with the take-up roll 110, the body The nut 144 is fixed to the inside of the 142 by press fitting. The nut 144 is screwed to the guide bolt 150 to move linearly along the guide bolt 150.

Therefore, when the take-up roll 110 rotates as described above, the slider 140 moves from side to side along the guide bolt 150 inside the take-up roll 110 as shown in FIG. ) Forward to the left, and the winding roll 110 to the right to move to the right.

And one side of the take-up roll (110) in accordance with the rotation of the take-up roll (110) after moving the slider 140 only the desired distance on the guide bolt 150, the movement limiting means for limiting the movement to stop the movement 160 ) Is located.

Such movement limiting means 160 is located in the head portion 152 of the guide bolt 150, as shown in detail in Figures 5a and 5b, the inside of the circular guide bolt 150 is fixed by fitting An outer first stopper 170 is provided.

And the housing is coupled to form a plurality of fixing blades 182 fitted to one inner surface of the take-up roll 110 on the outer circumferential surface while having a circular inner surface fitted to be coupled to the circular outer surface of the first stopper 170 ( 180).

The first stopper 170 and the housing 180 are elastically coupled to each other by a first spring 184 positioned therebetween, and the first stopper 170 is disposed at one outer surface of the housing 180. It is provided with a plurality of projections 172 larger than one side inner diameter portion 186 of the fitting is coupled to one end of the inner diameter portion 186 of the housing 180, formed in the middle of the inner diameter portion of the housing 180 A first spring 184 is fitted between the stepped jaw 188 and the protruding jaw 174 formed in the middle of the outer surface of the first stopper 170 to elastically fix the first stopper 170 to the inside of the housing 180. Let's do it.

That is, the plurality of protrusions 172 of the first stopper 170 are fitted to one end of the inner diameter portion of the housing 180, and in this state, the first spring 184 is intermediate the inner diameter portion of the housing 180. A plurality of protrusions of the first stopper 170 is provided at one end of the inner diameter of the housing 180 by elastically pushing the protrusion 174 formed in the middle of the outer surface of the first stopper 170 with respect to the stepped jaw 188 formed therein. Stable close contact is achieved.

In such a structure, washers 184a are disposed before and after the first spring 184, respectively, and are embedded together in the housing 180.

In addition, the first stopper 170 has a side plate fixing protrusion 176 divided in four directions at the other end, and the side plate fixing protrusions 176 are disposed on one side plate 105a as shown in FIG. 3. The first stopper 170 is fixed to the side plate 105a without rotation by being fitted in conformity with the four-way split groove 176a formed therethrough.

In addition, a second stopper 190 is provided inside the first stopper 170 to maintain the guide bolt 150 in a stable state. Such a second stopper 190 may include the first stopper 170. As it is fitted into the inside, the inside of the structure is provided with a second spring 192 for tightly supporting the guide bolt 150 toward the first stopper 170 side.

That is, the second stopper 190 is disposed such that an end of the second spring 192 positioned therein pushes the head 152 of the guide bolt 150 to the inner surface of the first stopper 170. The through hole 178 formed in the circumferential direction of the first stopper 170 at the inner side of the first stopper 170 by forming a plurality of protrusions 194 formed radially outward at one end of the second stopper 190. It is a structure that is elastically fitted to) and combined.

Therefore, the second stopper 190 is integrally coupled to the first stopper 170 while pushing the guide bolt 150 to the inner surface of the first stopper 170 due to the second spring 192. The through hole 196 is formed in the longitudinal direction so that a tool (not shown) such as a driver can enter the head portion 152 of the guide bolt 150.

The head 152 of the guide bolt 150 is formed with a groove 152a into which an end of a tool such as a driver is fitted, as shown in FIG. 4D.

In addition, the guide bolt 150 further includes a position aligning hole 158 having the bushing 156 built in one side thereof to position the guide bolt 150 at the center of the take-up roll 110.

Such a position alignment tool 158 is located on the opposite side of the head 152 of the guide bolt 150, as shown in Figure 4a, the trivet legs having an outer diameter that matches the inner diameter of the take-up roll 110 ( The spacer 159 of 159a is provided, and the bushing 156 is fixed to the center of the spacer 159, and the tip of the guide bolt 150 is rotatably fitted inside the bushing 156.

When the front end of the guide bolt 150 is rotatably inserted into the bushing 156 of the positioning tool 158 through such a structure, the guide bolt 150 is formed at the center of the spacer 159 of the tricycle leg 159a. As a result, the guide bolt 150 is aligned at the center of the take-up roll 110.

The roll blind limit device 100 according to the present invention configured as described above is applied to and used in the single roll blind system 200 having one winding roll 110 as shown in FIG. 6.

In such a single roll blind system 200, when the blind fabric 112 is wound around the take-up roll 110 and the lower rod 210 is located at the upper side, that is, the guide bolt is positioned in a dotted line in FIG. The slider 140 is positioned at an intermediate point on 150.

In such a state, when the user pulls the operation chain 130 in the reverse rotation to maintain the shading state, the winding roll 110 is reversely rotated through the chain wheel 120 to loosen the blind fabric 112, and the blind fabric The lower rod 210 of 112 is gradually moved downward, and the slider 140 is gradually moved to the right on the guide bolt 150.

Therefore, when the blind fabric 112 descends to the desired light shielding position P, that is, down to the solid line position in FIG. 6, the slider 140 moves up to the first stopper 170 of the movement limiting means 160 and further. You can't move anymore.

Such a stop of movement of the slider 140 performs a brake function to prevent the take-up roll 110 from rotating any more. As a result, the take-up roll 110 does not rotate even if the user pulls the operation chain 130 further. And, the operation chain 130 is no longer pulled. Accordingly, the blind fabric 112 stops the lowering operation and maintains the light shielding state at the desired precise point.

On the other hand, in contrast to the above, if the user wants to maintain the room in the translucent state by raising the blind fabric 112, the user pulls the operation chain 130 in the forward direction, the forward roll 110 through the chain wheel 120 in the forward direction Rotate Therefore, the winding roll 110 is wound up and wound around the blind fabric 112 while rotating forward, and the slider 140 is gradually moved from the state adjacent to the movement limiting means 160 on the right side of the guide bolt 150. It moves to the midpoint and returns to its original position.

As described above, the roll blind limit device 100 of the present invention is no longer provided after unrolling the blind fabric 112 of the single roll blind system 200 in the vertical direction and spreading only the height suitable for the installation site (window). It is not to be unfolded so that the user can use it conveniently.

And roll blind limit device 100 according to the present invention, as shown in Figure 7, the take-up roll 110 and the take-up roll 110 of the dual roll blind system 300 is provided with a movable take-up roll 310 Can be applied and used.

The roll blind limit device 100 of the present invention applied to the dual roll blind system 300 as described above is wound around the first blind fabric 112 to be wound on the outer circumferential surface and rotated in the forward or reverse direction by winding on one side. 110.

And it is disposed side by side on the take-up roll 110, the second blind fabric 312 is coupled to the outer peripheral surface is provided with a movable take-up roll 310 to rotate in the forward or reverse direction by the winding of one side.

In addition, the movable winding roll 310 is provided with an operation chain 130 on one side thereof, and the user rotates the movable winding roll 310 forward or reversely through the chain wheel 120 to the movable winding roll 310. The second blind fabric 312 to be mounted is first moved to the left and right, and the light-transmitting state in which the light-transmitting parts 114a and 314a overlap each other with respect to the first blind fabric 112 mounted on the take-up roll 110, and The light-transmitting portion 314a of the second blind fabric 312 overlaps the light-shielding portion 114b of the first blind fabric 112, and the light-shielding portion 314b of the second blind fabric 312 is the first blind fabric 112. It is possible to switch to a light shielding state overlapping the light transmitting portion (114a).

In addition, the movable winding roll 310 is provided with a drive gear 330 on the opposite side on which the chain wheel 120 is formed, such a drive gear 330 is driven gear of the take-up roll 110 through the intermediate gear 332 334 is connected to enable power transmission.

Therefore, when the user further pulls the operation chain 130 in a state where the first blind fabric 112 and the second blind fabric 312 are kept in the light shielding state, the movable winding roll 310 drives while rotating itself. The take-up roll 110 is rotated through the gear 330, the intermediate gear 332, and the driven gear 334 to release the first blind fabric 112 from the take-up roll 110, and move the take-up roll 310. From the second blind fabric 312 is to be released.

In the dual roll blind system 300 as described above, the roll blind limit device 100 of the present invention is equipped with a slider 140 and guide bolts 150 inside the take-up roll 110.

As described above, when the user operates the dual roll blind system 300 to which the roll blind limit device 100 of the present invention is applied, first and second blind fabrics 112 and 312 move with the take-up roll 110. When the lower rod 210 is wound on the take-up roll 310 and positioned at the upper side, that is, when it is positioned as a dotted line in FIG. 7, the slider 140 is positioned at an intermediate point on the guide bolt 150.

In this state, when the user pulls the operation chain 130 in reverse rotation to maintain the light shielding state, the movable winding roll 310 is reversely rotated through the chain wheel 120 of the movable winding roll 310 and the second rotation is performed. While unwinding the blind fabric 312, the winding roll 110 is reversely rotated through the driving gear 330, the intermediate gear 332, and the driven gear 334, so that the first blind fabric ( 112) is released.

As such, when the lower rods 210 of the first and second blind fabrics 112 and 312 are gradually moved downward, the slider 140 is gradually moved to the right on the guide bolt 150.

Therefore, when the first and second blind fabrics 112 and 312 are lowered to the desired light shielding position P, that is, to the point positioned in the solid line in FIG. 7, the slider 140 moves limiting means 160. The first stopper 170 is moved up to no longer move.

Such a stop of the slider 140 performs a brake function to prevent the take-up roll 110 from rotating any more, and as a result, the take-up roll 110 is driven gear 334, intermediate gear 332 and the drive gear The rotation of the movable winding roll 310 is stopped through the 330, and the user does not rotate even when the user pulls the operation chain 130 further. Accordingly, the first and second blind fabrics 112 and 312 stop the lowering operation and maintain the light shielding state at the desired precise point.

On the other hand, contrary to the above, when the first and second blind fabrics 112 and 312 are raised to maintain the room in the transmissive state, the user pulls the operation chain 130 in the forward direction.

In this case, the movable winding roll 310 is first moved in the axial direction through the built-in slide (not shown) and the reduction gear unit (not shown) without being rotated even in the forward pull of the operation chain 130, The second blind fabric 312 mounted on the movable winding roll 310 is moved left and right so that the light transmitting portions 114a and 314a overlap each other with respect to the first blind fabric 112 mounted on the winding roll 110. The light is first aligned.

In this state, when the user pulls the operation chain 130 further in the forward direction, the movable winding roll 310 is rotated in the forward direction through the chain wheel 120 so as to wind up the second blind fabric 312 around it. At the same time, the winding roll 110 is forwardly rotated through the driving gear 330, the intermediate gear 332, and the driven gear 334 to wind up the first blind fabric 112 from the winding roll 110.

Therefore, the lower rod 210 connected to the lower portion of the first blind fabric 112 and the second blind fabric 312 is raised to the upper position as shown by the dotted line of FIG. 7, wherein the slider 140 moves to the right. From the state adjacent to the limiting means 160 is gradually moved to the middle point of the guide bolt 150 to return to the original original position.

As described above, the roll blind limit device 100 of the present invention loosens the first and second blind fabrics 112 and 312 of the dual roll blind system 300 in the vertical direction to apply the blinds to the installation place (window). It is to make it convenient for the user by not lowering any more after unfolding by lowering only by a suitable height.

Meanwhile, in the roll blind limit device 100 of the present invention, when the guide bolt 150 is rotated by using a tool such as a driver (not shown), the H-type slider 140 moves on the guide bolt 150 to limit movement. It is possible to adjust the movement distance between the stopper of the means 160.

That is, the roll blind limit device 100 of the present invention may adjust the vertical movement distance of the blind fabrics 112 and 312 so that the blinds are unfolded only by a height suitable for various installation places (windows).

In this case, the position of the H-type slider 140 may be adjusted on the guide bolt 150. When the guide bolt 150 is rotated forward, the H-type slider 140 is closer to the movement limiting means 160. At this time, the vertical movement distance of the blind fabrics 112 and 312 can be shortened.

On the contrary, when the guide bolt 150 is rotated in reverse, the H-shaped slider 140 is positioned farther in the movement limiting means 160, so that the vertical movement distance of the blind fabrics 112 and 312 can be adjusted longer.

As described above, the present invention uses the single roll blind system 200 or the dual roll blind system 300 to unfold the blind fabrics 112 and 312 to shield the interior, according to the rotation of the winding roll 110. H-shaped slider 140 on the guide bolt 150 of the moving distance by only a predetermined distance so that the first stopper 170 of the movement limiting means 160 is not moved by the blind fabric (112, 312) installation place ( After it is stretched to the appropriate height, it no longer expands.

Therefore, when the single roll blind system 200 or the dual roll blind system 300 is used, the blind fabrics 112 and 312 can be easily adjusted to an accurate light shielding state, which is very convenient to use.

In addition, the present invention can accurately adjust the vertical movement distance of the blind fabric 112, 312 through the adjustment of the position of the H-shaped slider 140 on the guide bolt 150, only blind as much as the height suitable for various installation places (windows) The fabrics 112 and 312 are unfolded so that the single roll blind system 200 or the dual roll blind system 300 of various sizes can be conveniently used.

Although the present invention has been described in detail with reference to the accompanying drawings, the present invention is not limited to such a specific structure. Those skilled in the art will be able to variously modify or change the embodiments of the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. For example, in a single roll blind system or a dual roll blind system, a separate drive motor may be mounted instead of the operation chain and the chain wheel, respectively, and then reversely driven by remote wireless operation to directly rotate the take-up roll or the take-up roll. There will be. Nevertheless, it will be apparent that all such modifications or design modifications to such simple embodiments will clearly fall within the scope of the present invention.

1 is a front view showing a single roll blind system according to the prior art.

Figure 2a is a front view showing a dual roll blind system according to the prior art.

Figure 2b is an explanatory diagram showing a problem that the blind fabric sag down in a dual roll blind system according to the prior art.

Figure 3 is a front view showing a roll blind limit device according to the present invention.

4A is a cross-sectional view taken along the line A-A of FIG.

4B is a cross-sectional view taken along the line B-B in FIG. 3.

4C is a cross-sectional view taken along the line C-C in FIG.

4D is a cross-sectional view taken along the line D-D of FIG. 3.

Figure 5a is a cross-sectional view showing the position limiting means provided in the roll blind limit device according to the present invention.

Figure 5b is an exploded view showing the position limiting means provided in the roll blind limit device according to the present invention.

6 is an explanatory view showing a state in which the roll blind limit device according to the present invention is applied to the single roll blind system to operate.

7 is an explanatory view showing a state in which the roll blind limit device according to the present invention is applied to the dual roll blind system to operate.

Description of the Related Art

1 ...... Conventional blind system 10 ..... blind fabric

15 ..... take-up roll 20 ..... chain wheel

25 ..... 50 ..... controllable dual roll blind system

55a, 55b ... shroud 60 ..... winding roll

62a, 72a .... floodlight 62b, 72b ..... floodlight

64 ..... First blind fabric 70 ..... Movable winding roll

74 ..... The second blind fabric 80 ...... The blind winding mechanism

82 ..... Screw shaft 84 ..... Chain wheel

90 ..... Lower rod 100 .... Roll blind limit device according to the present invention

105a, 105b .... side plate 110 ... roll

112 ..... Blind Fabric 114 .... Fabric Home

120 ... chain wheel 130 ... chain

140 .... Slider 142 .... H-shaped body

144 ..... Nut 150 ..... Guide bolt

152 .... Head 152a .... Home

156 ..... Bushing 158 ..... Positioning fixture

159 ..... Spacers 159a ..... Trivet legs

160 .... Restrictions 170 .... First stopper

172 ..... protruding 174 ..... protruding jaw

176 ..... Shroud fixing protrusion 176a ..... Split groove

178 ..... through hole 180 ..... housing

182 ..... fixed wing 184 ..... first spring

184a .... washer 186 ..... one side internal diameter

188 ..... step 190 ..... second stopper

192 ..... 2nd spring 194 ..... turning

196 ..... through hole 200 ..... single roll blind system

210 ..... Lower Rod 300 ..... Dual Roll Blind System

310 ..... Movable take-up roll 312 ..... Second blind fabric

114a, 314a .... Floodlight 114b, 314b ..... Shading

330 ..... Drive gear 332 ..... Medium gear

334 ..... driven gear P ...... shading position

△ h ..... height

Claims (7)

An apparatus for limiting the moving distance of blinds in a roll blind system, The blind fabric 112 is combined and wound on the outer circumferential surface, the winding roll 110 to rotate in the forward or reverse direction by the winding of one side; A slider 140 rotating together with the take-up roll 110 inside the take-up roll 110 and having a thread formed therein; And A guide bolt 150 that is screwed into the thread of the slider 140 to provide a movement path of the slider 140; And After the slider 140 is moved only the desired distance on the guide bolt 150 in accordance with the rotation of the winding roll 110, the movement limiting means 160 having a stopper for limiting the movement so that the movement is stopped. Roll blind limit device 100, characterized in that configured to place the blind fabric 112 of the single roll blind system 200 in the desired unfolding position by limiting excessive rotation of the take-up roll (110). An apparatus for limiting the moving distance of blinds in a roll blind system, Winding roll 110 is coupled to the first blind fabric 112 is wound on the outer circumferential surface, and rotated in the forward or reverse direction by the winding of one side; A movable winding roll 310 disposed side by side on the winding roll 110 and having a second blind fabric 312 coupled to the outer circumferential surface and rotating in a forward or reverse direction by winding on one side; A slider 140 rotating together with the take-up roll 110 inside the take-up roll 110 and having a thread formed therein; And A guide bolt 150 that is screwed into the thread of the slider 140 to provide a movement path of the slider 140; And After the slider 140 is moved only the desired distance on the guide bolt 150 in accordance with the rotation of the winding roll 110, the movement limiting means 160 having a stopper for limiting the movement so that the movement is stopped. By limiting excessive rotation of the take-up roll 110 and the movable take-up roll 310 is characterized in that the first and second blind fabrics 112, 312 of the dual roll blind system 300 is configured to be positioned in the desired unfolding position A roll blind limit device 100 is provided. The method of claim 1 or 2, wherein the slider 140 is provided with an H-shaped body 142 having a length corresponding to the inner diameter of the take-up roll 110, and is fitted inside the take-up roll 110 Rotate integrally with the take-up roll 110, the nut 144 is fixed to the inside of the body 142 by a press-fit, the nut 144 is screwed to the guide bolt 150, the guide bolt 150 Roll blind limit device 100, characterized in that to move linearly along. According to claim 1 or 2, The movement limiting means 160 is located in the head portion 152 of the guide bolt 150, the inside of the first circular circular outer surface to which the guide bolt 150 is fitted A plurality of fixed blades 182 fitted to the inner surface of the take-up roll 110 are formed on the outer circumferential surface while having a stopper 170 and a circular inner surface fitted to engage with the circular outer surface of the first stopper 170. Roll blind limit device (100) characterized in that it comprises a housing (180) and a second stopper (190) for holding the guide bolts (150) inside the first stopper (170). 5. The inner diameter portion of the housing 180 of claim 4, wherein the first stopper 170 includes a plurality of protrusions 172 larger than one inner diameter portion 186 of the housing 180 on one outer surface thereof. The first spring 184 is coupled between the end jaw 188 formed in the middle of the inner diameter of the housing 180 and the protruding jaw 174 formed in the middle of the outer surface of the first stopper 170. The first stopper 170 is elastically fixed to the inside of the housing 180, and the guide bolt 150 is inserted into the second stopper 190 inside the first stopper 170. Is fitted with a second spring 192 to closely support the first stopper 170, and the second stopper 190 forms a plurality of protrusions 194 formed radially outwardly at one end thereof to form the first stopper. Resiliently fitted into the circumferential through hole 178 of the first stopper 170 in the inner side of the 170 is coupled Roll blind limit device (100) characterized in that. The guide bolt 150 is rotated by forming a groove 152a in which the tip of a tool (not shown) including a driver is inserted into the head 152 so as to be rotated. Roll blind limit device 100, characterized in that configured to adjust the position of the screwed slider 140. According to claim 1 or 2, The guide bolt 150 has a bushing 156 built in one end thereof, the position alignment tool 158 for positioning the guide bolt 150 in the center of the take-up roll 110 Roll blind limiter device, characterized in that it further comprises a).

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