WO2014034971A1

WO2014034971A1 - Roll blind having single operating cord

Info

Publication number: WO2014034971A1
Application number: PCT/KR2012/006857
Authority: WO
Inventors: 김정민
Original assignee: Kim Jung Min
Priority date: 2012-08-28
Filing date: 2012-08-28
Publication date: 2014-03-06

Abstract

The present invention relates to a roll blind having a single operating cord, the roll blind comprising: a winding unit for raising blind fabric wound onto a winding rod by means of the rotation of a driving connector in one direction, and lowering the blind fabric by means of the rotation of the driving connector in the other direction; a raising unit for pulling the single operating cord of a cord pulley connected to a moving clutch downward so as to raise the blind fabric when a first clutch of the moving clutch is coupled to a center gear clutch of a direction-changing clutch; and a lowering unit for pulling the inclinedly arranged single operating cord of the cord pulley forward so as to lower the blind fabric when the moving clutch is moved and a second clutch of the moving clutch is coupled to the ring gear clutch of the direction-changing clutch.

Description

Roll blinds with single operation code

The present invention relates to a roll blind device that can block the inflow of sunlight from the outside, and prevent the exposure of indoor privacy, and more specifically, a rising cord and a descending cord for raising and lowering the blind fabric with one operation cord. The present invention relates to a roll blind having a single operation cord which is formed and descends at a speed of 1: 1 when the blind fabric is lowered using the planetary gear, and is smoothly decelerated and raised when the blind fabric is raised.

Generally, roll blinds are installed in windows of various buildings and used as means for preventing light from outside, controlling lighting in a room, or preventing invasion of privacy in a room.

Such conventional roll blinds typically have one or more blind fabrics installed in the horizontal direction.

The blind fabric is rolled up on the upper winding rod to be wound or stored, or it is used to unwind from the winding rod to block the window.

Such a conventional roll blind is provided with a drive side bracket and a driven side bracket on both sides of a frame fixed to a wall or the like.

A pipe-shaped winding rod is rotatably mounted between the brackets, and a blind fabric is wound around the winding rod.

In addition, the weight is fixed to the lower end of the blind fabric is to be lowered by unwinding the blind fabric from the winding rod by the weight of the weight.

And the conventional roll blind is provided with a cord pulley inside the drive side bracket, which is integrally connected to the winding rod to rotate.

* The cord pulley is wound with an endless chain pull cord.

Such a pull cord rotates in one direction through a cord pulley when the user pulls one side thereof.

This rotation of the winding rod is raised by wrapping the blind fabric around it.

In addition, the pull cord such that when the user pulls the other side, the cord pulley is reversed in the opposite direction.

This reverse rotation of the cord pulley rotates the take-up rod in the opposite direction. The blind fabric is thus unwound and lowered from the take-up rod.

On the other hand, such a pulling cord is formed in an endless track type, wound around the cord pulley, and the lower end thereof is extended down. Therefore, such a pull cord can cause a very dangerous situation.

For example, young children often hide behind the blind fabric while playing hide-and-seek in their homes. In such cases, accidents often occur in which children pull the cord around the neck of a caterpillar.

This kind of neck cord safety accident is very fatal.

For example, children are known to choke easily if they fall down with a cord wrapped around the children's necks.

In addition, the caterpillar pull cord of the conventional roll blind device is often a problem that the body of the young children running indoors, or the physically weak elderly people are tripped over.

In order to fundamentally prevent such a problem, the conventional pulling cords stretched in an endless track are not connected to each other, and the pulling cords are placed high.

In this way, it is desirable to position the pull cord out of reach of young children so that children or the elderly may not get caught by the cord.

However, conventional roll blinds are thus unable to separate the lower end of the pulling cord to shorten its length and to place it high on the reach of children.

Therefore, there is a serious demand in the art for a new technology development that can solve such a conventional problem.

In addition, the conventional roll blind apparatus has a problem that it is difficult to roll up the blind fabric when the weight of the blind fabric is large, in order to increase the blind fabric.

Therefore, it was necessary to develop a device capable of smoothly operating the user without significant force in connection with the operation of raising and lowering the blind fabric.

An object of the present invention is to solve the conventional problems as described above, comprising a pull cord for raising and lowering the blind fabric as a single operation cord, the short cord length is located in a high position out of reach of young children It is to provide a roll blind having a single operation code.

And another object of the present invention is to provide a roll blind having a single operation code that can completely prevent the safety accidents, such as neck wound accidents of elderly children, tripping over the elderly in connection with the use of roll blinds will be.

In addition, another object of the present invention can be used as a rising code to decelerate the blind fabric by pulling the single operation cord directly below, and tilting the single operation cord to the front, then pulling the blind fabric in an inclined state to 1: 1 speed It is to provide a roll blind having a single operation code which can be used as a lowering code for lowering the furnace.

It is still another object of the present invention to provide a roll blind having a single operation code in which a single operation code is automatically pulled down to the lower side, and then the home position return operation of the single operation code is automatically performed.

In addition, another object of the present invention is to provide a roll blind having a single operation cord that can be operated by the user to smoothly operate the blind fabric without a great effort during the operation of the blind fabric, improving the convenience of use. .

And another object of the present invention is to provide a roll blind having a single operation code that can immediately stop the rising and lowering of the blind fabric when the user releases the pull state of the single operation code.

In order to achieve the above object, the present invention, in the roll blind device that the blind fabric is wound around the winding rod, or used to unwind from the winding rod,

A winding unit in which the blind fabric wound around the winding rod is increased by one side rotation of the driving connector connected to one side of the winding rod, and the blind fabric is lowered by the other side rotation of the driving connector and the winding rod;

A clutch having a direction switching clutch connected to one side of the drive connector, a moving clutch sliding axially with respect to the direction switching clutch, and coupling between clutches facing each other through left and right movement of the moving clutch with respect to the direction switching clutch And a separation is performed, and the lifting operation of raising the blind far end by pulling the single operation cord of the cord pulley connected to the moving clutch to the lower side in a state in which the first clutch of the moving clutch is coupled to the central gear clutch of the direction shifting clutch. part; And

A lowering adjustment lever is provided for moving the shifting clutch left and right, and the lowering adjustment lever forms a latch so that the lower end thereof is caught by a single operation code, and the lowering adjustment lever is pulled forward by pulling the single operation code to the front side. Rotating the movable clutch causes the second clutch to be coupled to the ring gear clutch of the direction shifting clutch, in which the single fabric of the cord pulley is pulled forward in an inclined state to lower the blind fabric. It provides a roll blind having a single operation code configured to adjust the height of the blind fabric, including a lower operation unit.

And the present invention is preferably the direction shift clutch is a ring gear one side is connected to the drive connector, a plurality of planetary gears in the inner gear coupling to the ring gear, and a central gear geared in the center of the planet gears The ring gear forms a ring gear clutch on one side thereof toward the moving clutch side, and the center gear forms a clutch disc having an enlarged diameter toward the moving clutch side, and a center gear clutch on the outer circumferential surface of the clutch disc. On the other hand, the ring gear clutch is disposed corresponding to the second clutch of the moving clutch, and the center gear clutch provides a roll blind having a single operation cord disposed corresponding to the first clutch of the moving clutch.

In addition, the present invention preferably the turning clutch is rotated to lower the blind fabric at a 1: 1 speed through the drive connector, when the rotational force is transmitted from the moving clutch through a ring gear clutch, the rotation of the clutch When the rotational force is transmitted from the moving clutch through the center gear clutch, the ring gear reversely rotates through the planetary gears to provide a roll blind having a single operation cord for decelerating and raising the blind far end through the drive connector.

And the present invention is preferably the moving clutch to form a first cylindrical portion on one side thereof, the second cylindrical portion is reduced in diameter on the opposite side of the first cylindrical portion, the second cylinder inside the first cylindrical portion A third cylindrical portion extending to the opposite side of the portion is formed, while a first clutch is formed to protrude along the inner circumferential surface of the first cylindrical portion, a second clutch is formed to protrude along the edge of the first cylindrical portion, and the second cylindrical portion is formed. A third clutch is formed on an outer circumferential surface, and the third clutch is coupled to a plurality of first one-way poles protruding from the cord pulley so that the moving clutch is always rotated in only one direction, and the third cylindrical portion A clutch restoring spring is fitted around the circumference, and the clutch restoring spring is supported by a stationary disc whose one end is fixed to the central shaft. End provides a roll blind having a single operation code is maintained in mesh with the support is always toward the cord pulley to move the clutch to support the inner surface of the moving clutch to the central gear clutch of the direction switching clutch fits to the first clutch of the moving clutch state.

In addition, the present invention is preferably the movable clutch is inserted into a circular rod-shaped push rod so as to be able to slide in the shaft hole of the central shaft, one end of the push rod through the bracket fixed to the central shaft of the lowering adjustment lever It is in close contact with the upper inclined surface, and the other end of the push rod protrudes to the both sides of the long hole formed in the axial direction of the central axis to support the inner surface of the third cylindrical portion of the moving clutch, the lower adjustment lever is the middle portion of the It is rotatably mounted on the lower hinge shaft of the support plate fixed to the other side of the bracket, and if the lowering adjustment lever is kept in an upright position, the push rod is pushed to the right by the moving clutch and positioned to the right of the long hole of the central shaft. The first clutch is moved to engage with the center gear clutch of the direction shift clutch, and the When the control lever is kept inclined forward, the push rod is positioned on the left side of the long hole of the central axis while moving the push rod to the left to move the second clutch of the shifting clutch to engage the ring gear clutch of the shifting clutch, During the left and right movement of the shifting clutch, the third clutch provides a roll blind having a single operation cord moving left and right in gear engagement with a plurality of first unidirectional poles protruding from the cord pulley.

And preferably, the cord pulley forms a ring-shaped concave groove in which a single operation cord is wound on an outer circumferential surface thereof, on one side of which a third clutch is formed on the outer circumferential surface of the second cylindrical portion of the moving clutch. Roll blinds having a single operation cord extending in an inclined state to the end and gear ends are engaged, and when the cord pulley is rotated by the downward pull of the single operation cord, the moving clutch is rotated in the same direction together with the cord pulley. To provide.

In addition, the present invention preferably the lower adjustment lever is formed on the upper end of the inclined surface, the lower end of the forming a hanger to be caught by a single operation code so that when the user pulls a single operation code forward, the lower adjustment lever is forward through the hanger When the user pushes a single operation code backward, the lowering adjustment lever returns to the upright state, and the inclined surface is a thin portion at the end of the pusher when the lowering adjustment lever is kept upright. When the push rod is pushed to the right and the downward adjustment lever is kept inclined forward, the thick portion is pressed against the tip of the push rod to provide a roll blind having a single operation cord for pushing the push rod to the left.

And the present invention is preferably the lowering adjustment lever further includes a posture holding portion for maintaining the down adjustment lever in an upright state, or inclined forward, the posture holding portion protrudes the engaging rod on one side thereof And the locking bar moves in the first and second locking grooves formed concave in the inner side of the support plate, and when the lowering adjustment lever is moved upright, the locking bar is positioned in the first locking groove so that the lowering adjustment lever When it is maintained in an upright state and the lowering adjustment lever is moved forwardly inclined state, the locking rod is moved from the first locking groove and positioned in the second locking groove so that the lowering adjustment lever is kept inclined forwardly. The support plate is arranged so that the upper end is integrally fixed to the bracket to surround the lowering adjustment lever between the bracket and It provides a roll blind having an operation code.

In addition, the present invention preferably has a pulley restoring spring to accumulate elastic restoring force by pulling the single operation cord downward to rotate the cord pulley to one side, by using the accumulated elastic restoring force of the pulley restoring spring And a cord return unit for reversing, winding the single operation cord around the cord pulley and returning it to the original position, wherein the pulley restoring spring is located around the central axis inside the cord pulley and the pulley restoring spring One end of the cord pulley is fixed to the inner side of the cord pulley, the other end is fitted on the hexagonal portion of the central axis is fixed to the fixed bushing, the pull pull restores the pulley during the operation of the pull pull down operation of the single operation cord The spring accumulates the torsional elasticity and the downward pull operation of the single operation cord is eliminated. The cord pulley is reversely rotated by using the torsionally elastic restoring force of the surface-stored pulley restoring spring, and the single operation cord is wound around the cord pulley to return to the original position and the user returns to the original position. The single operation cord is pulled back to the bottom directly to further provide a roll blind having a single operation cord for raising or lowering the blind fabric.

In another aspect of the present invention, preferably, the cord returning part is elastically bent by a plurality of first one-way poles of the cord pulley when the cord pulley is operated by the pulley restoring spring so as to pass over the third clutch of the moving clutch. Provides a roll blind with a single operation code.

According to the present invention as described above, the pulling cord for raising and lowering the blind fabric can be configured as one operation cord, and the cord length can be shortened so that it can be placed in a high position out of reach of young children.

In this state, when the single operation cord is pulled directly below, the fabric can be used as a rising code to decelerate the blind fabric. When the single operation cord is inclined forward and pulled in an inclined state, the fabric is lowered at 1: 1 speed. Can be used as code

Therefore, according to the present invention, it is possible to completely prevent a safety accident such as a neck wound accident of a young child and a fall of the elderly in connection with the use of a roll blind.

In the present invention, once the single operation code is pulled to the lower side, the home position return operation of the single operation code is automatically performed.

In addition, the present invention can immediately stop the rising or falling of the blind fabric when the user releases the pull state of the single operation code.

In addition, the present invention, since the rising operation is performed in the deceleration state using the planetary gears of the direction switching clutch when the operation of the blind fabric, the user can smoothly operate the fabric up the blind without using a large force, The convenience of is greatly improved.

1 is a front sectional view of the roll blind having a single operation code according to the present invention as a whole.

Figure 2 is an exploded assembly cross-sectional view showing the entire roll blind having a single operation code according to the present invention.

Figure 3a is a front view showing the ring gear and the planetary gears of the directional clutch provided in the present invention.

Figure 3b is a front view showing the center gear of the direction shift clutch provided in the present invention.

Figure 4a is a side cross-sectional view of the moving clutch provided in the present invention.

Figure 4b is a left side view of the shift clutch provided in the present invention.

Figure 4c is a right side view of the shift clutch provided in the present invention.

5 is a perspective view showing a lowering adjustment lever provided in the present invention.

Figure 6 is a side view showing a one-way rotation coupling structure of the cord pulley and the moving clutch provided in the present invention.

Figure 7a is a side view showing a state in which the lowering adjustment lever of the present invention is inclined forward due to the front pull of a single operation code of the user.

7B is a cross-sectional view illustrating a state in which the blind fabric is lowered because a single operation cord is pulled downward while the lowering adjustment lever of the present invention is inclined forward.

Figure 8a is a side view showing a state where the lowering adjustment lever of the present invention is positioned upright.

8B is a cross-sectional view illustrating a state in which the blind fabric is raised by pulling down a single operation cord in a state in which the lowering adjustment lever of the present invention is positioned upright.

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

* Roll blind 100 having a single operation cord according to the present invention, as shown in Figure 1, wound the blind fabric (W) wound around the winding rod 106, or used to unwind from the winding rod 106 It is to be done.

Roll blind 100 having a single operation code according to the present invention has a winding unit 120 for raising or lowering the blind fabric (W).

The winding unit 120 includes a driving connector 122 on one side of the winding rod 106 on which the blind fabric W is wound on its outer circumferential surface. The driving connector 122 is fitted to one end of the winding rod 106.

Another driven connector 124 is fitted to the other end of the winding rod 106, and the driven connector 124 is rotatably mounted to one side bracket Ba.

The winding unit 120 as described above rises the blind fabric W wound around the winding rod 106 by one side rotation of the driving connector 122 and the winding rod 106.

In addition, the blind fabric W is unwinded from the winding rod 106 by the other direction of rotation of the driving connector 122 and the winding rod 106.

The winding part 120 is inserted into the driving connector 122 to be rotatable on a circular outer circumferential surface of the central axis 140.

The central shaft 140 is fixed to one side end of the other side bracket (Bb), the other end extends to the center side of the winding rod 106, and forms a free end.

And the present invention has a lifting operation unit 200 for the user to raise the blind fabric (W) by pulling a single operation cord (C) to the lower side directly.

As shown in FIG. 2, the lifting operation part 200 includes a direction switching clutch 210 connected to one side of the driving connector 122, and slides in an axial direction with respect to the direction switching clutch 210. It has a moving clutch 240 to engage.

The lifting operation unit 200 is coupled and separated between the clutches facing each other through the left and right movement of the moving clutch 240 with respect to the direction switching clutch 210.

The direction switching clutch 210 has a ring gear 212 connected to one side of the driving connector 122, a plurality of planetary gears 216 internally coupled to the ring gear 212, and the planetary gear ( 216 is composed of a central gear 222 geared to the center of the.

The detailed structure of such a direction switching clutch 210 is shown in Figs. 3A and 3B.

That is, as shown in FIG. 3A, the direction shifting clutch 210 includes a cylindrical ring gear 212 and six planetary gears 216 that are geared in engagement with the ring gear 212. do. The planetary gears 216 also include a central gear 222 in the form of a circular gear as shown in FIG. 3B, each of which is mounted rotatably inside the ring gear 212 and is geared at the center thereof.

In addition, the ring gear 212 forms a ring gear clutch 214 toward the moving clutch 240 side at one side edge thereof, and as shown in FIG. 2, one side thereof is integrally connected to the driving connector 122. The ring gear clutch 214 on the other side is formed toward the moving clutch 240 which will be described later.

In addition, the center gear 222 is shown as a cross-section in Figure 2, the inner circumferential surface is fitted with a rotary sleeve 224 is maintained to be rotatable about the central axis 140.

In addition, the central gear 222 forms a clutch disc 226 having an enlarged diameter on the opposite side of the plurality of planetary gears 216, that is, the moving clutch 240, and a central gear clutch on the outer circumferential surface of the clutch disc 226. 228 is formed.

In addition, such a lift operation unit 200 is provided with a moving clutch 240, such a moving clutch 240, as shown in the enlarged view in Figures 4a, 4b, and 4c, the first cylinder to one side thereof. The portion 242 is formed.

In addition, the shift clutch 240 forms a second cylindrical portion 246 whose diameter is reduced to the opposite side of the first cylindrical portion 242, and the second cylindrical portion (242) is formed inside the first cylindrical portion 242. A third cylindrical portion 248 is formed extending to the opposite side of 246.

In addition, the moving clutch 240 protrudes and forms the first clutch 252 along the inner circumferential surface of the first cylindrical portion 242, and the second clutch 254 along the edge of the first cylindrical portion 242. To form a protrusion.

Each of the first clutch 252 and the second clutch 254 is connected to each other integrally to form one tooth bunch. That is, as shown in FIG. 4B, the first clutch 252 is formed inside the edge of the first cylindrical portion 242, and the second clutch 254 is on the edge of the first cylindrical portion 242. It is a structure formed integrally.

The shift clutch 240 has a ring gear clutch 214 of the direction shift clutch 210 corresponding to the second clutch 254 of the shift clutch 240, and a center gear of the center gear 222. The clutch 228 is disposed corresponding to the first clutch 252 of the moving clutch 240.

And such a moving clutch 240 forms a third clutch 258 on the outer circumferential surface of the second cylindrical portion 246, the third clutch 258 protrudes from the cord pulley 310 as described later The plurality of first one-way poles 314 are gear-coupled to couple the moving clutch 240 to always rotate in only one direction.

In addition, as illustrated in FIGS. 1 and 2, the clutch clutch spring 260 is fitted around the third cylindrical portion 248.

Such a clutch restoring spring 260 is made of a cylindrical coil spring, one end of which is supported by a fixed disk 262 integrally fixed to the central axis 140, the other end is the inner surface of the moving clutch 240 Support.

Such a clutch restoring spring 260 elastically supports the moving clutch 240 to the cord pulley 310 side with respect to the stationary disk 262 so that the center of the direction switching clutch 210 as described later. The gear clutch 228 is held in engagement with the first clutch 252 of the moving clutch 240.

In addition, as shown in FIG. 2, the movable clutch 240 is fitted with a circular rod-shaped push rod 280 to be slidable within the shaft hole 142 of the central shaft 140.

The central shaft 140 is rotatably fitted around the drive connector 122, the direction switching clutch 210, the moving clutch 240, the fixed disk 262 and the bushing 420 is the central shaft 140 The cord pulley 310 is integrally fixed to the square cross-section of the bushing, and is rotatably mounted around the bushing 420.

The central shaft 140 has a shaft hole 142 formed inside the end side connected to the bracket (Bb) of one side, the push rod 280 is fitted to be able to slide in the shaft hole 142.

Such a central axis 140 and the push rod 280 are arranged coaxially with each other, the push rod 280 is slidably coupled to the inside of the shaft hole 142 of the central axis 140.

The push rod 280 is in close contact with the top inclined surface 350 of the lowering adjustment lever 320 to be described later through one end thereof passes through the bracket (Bb) in which the central axis 140 is fixed.

In addition, the other end of the push rod 280 is provided with a push bar 284 inside the central axis 140.

The push bar 284 protrudes to the two sides of the long hole 146 formed at both ends thereof in the axial direction in the middle of the central axis 140.

In addition, the push bar 284 formed on the push rod 280 is formed at a right angle with the axial direction of the push rod 280. The push bar 284 is fitted into a hole 286 formed in the push rod 280. The push bar 284 fits the push rod 280 into the shaft hole 142 of the central shaft 140, and then matches the long hole 146 of the central shaft 140 with the hole 286 of the push rod 280. Then, when the push rod 284 is inserted through the long hole 146 of the central axis 140 and the hole 286 of the push rod 280, both ends of the push rod 284 of the central axis 140 It is assembleable to be located in the long hole 146.

In addition, both ends of the push bar 284 protrude out of the long hole 146 of the central axis 140, and as shown in FIGS. 7B and 8B, the third cylindrical portion 248 of the moving clutch 240. Support the inner side.

The push bar 284 of the push rod 280 pushes the moving clutch 240 with respect to the clutch restoring spring 260.

And the roll blind 100 having a single operation cord according to the present invention pulls down the single operation cord (C) of the cord pulley 310 in an inclined state to lower the lower operation unit 300 to lower the fabric (W) ).

Such a lower operation unit 300 is provided with a lowering adjustment lever 320 for moving the moving clutch 240 to the left and right, the lowering adjustment lever 320 is the lower end is caught by a single operation code (C). The hanger 322 is formed.

That is, the lowering adjustment lever 320 may rotate the lowering adjustment lever 320 through the hook 322 by the user pulls a single operation code (C) to the front side. When the downward adjustment lever 320 is inclinedly rotated forward, the moving clutch 240 is moved to couple the second clutch 254 to the ring gear clutch 214 of the direction switching clutch 210. The first clutch 252 is separated from the center gear clutch 228.

The lower adjustment lever 320 of the lower operation unit 300 is shown in detail in FIGS. 5, 7A and 8A. The lower adjustment lever 320 is rotatably mounted to the lower hinge shaft 342 of the support plate 340, the middle portion of which is fixed to the other side of the bracket.

The lowering adjustment lever 320 forms an inclined surface 350 at an upper end thereof, and forms a locking stand 322 that is caught by a single operation cord C at the lower end thereof.

Therefore, when the user pulls the single operation code (C) to the front, the lower adjustment lever 320 is inclined forward through the hook 322, and when the user pushes the single operation code (C) to the rear, The falling adjustment lever 320 returns to the upright state.

In this process, when the lowering adjustment lever 320 is kept inclined forward, the inclined surface 350 has a thick portion 352 is in close contact with the end of the pusher 280 to push the pusher 280 to the left. Will be moved.

In this case, as shown in FIGS. 7A and 7B, the push bar 284 is positioned to the left of the long hole 146 of the central axis 140 while moving to the left side.

In this case, the push bar 284 pushes the movement clutch 240 to the left side so that the second clutch 254 of the movement clutch 240 engages with the ring gear clutch 214 of the direction shift clutch 210. Let's do it.

However, the inclined surface 350, when the lowering adjustment lever 320 is maintained in an upright state, the thin portion 354 is in close contact with the end of the pusher 280, the pusher 280 is pushed to the right.

That is, as shown in FIGS. 8A and 8B, the tip of the push rod 280 is positioned in the thin portion 354 of the inclined surface 350 so that the push bar 284 is moved to the right side by the moving clutch 240. It is pushed and positioned to the right of the long hole 146 of the central axis 140.

In this case, the first clutch 252 of the shift clutch 240 is moved in engagement with the center gear clutch 228 of the direction shift clutch 210.

As such, the third clutch 258 provided in the third cylindrical portion 248 during the left and right movement of the moving clutch 240 is geared against the plurality of first one-way poles 314 protruding from the cord pulley 310. It is moved left and right in a combined state.

As shown in FIGS. 2 and 6, the cord pulley 310 forms a ring-shaped concave groove 316 wound around a single operation cord C on an outer circumferential surface thereof, and on one side thereof, a plurality of first one-way poles ( 314 extends inclined to the third clutch 258 formed on the outer circumferential surface of the second cylindrical portion 246 of the moving clutch 240, and the ends thereof are gear-coupled.

Therefore, when the cord pulley 310 is rotated by pulling down a single operation cord C by the user, the plurality of first one-way poles 314 push the third clutch 258 to the cord pulley 310. And rotate the moving clutch 240 in the same direction.

On the other hand, the lowering adjustment lever 320 is provided with a posture maintaining part 380. That is, the lower adjustment lever 320 may be maintained in an upright state or inclined forward through the posture maintaining part 380. The posture maintaining part 380 protrudes and engages the locking bar 382 on the upper side of the lowering adjustment lever 320, and the locking bar 382 is formed to be concave inside the support plate 340. 2 Move within the locking grooves (386, 388).

The support plate 340 is arranged so that the upper end is integrally fixed to the bracket (Bb) to surround the lowering adjustment lever 320 between the bracket (Bb), the first and second on the inner surface The engaging

grooves

386 and 388 are formed.

Therefore, when the locking bar 382 is located in the first locking groove 386, the lowering adjustment lever 320 is maintained in the upright adjustment lever 320, and the lowering adjustment lever 320 is tilted forward. When moved to the photo state, the locking bar 382 is moved from the first locking groove 386 is located in the second locking groove 388 to maintain the downward adjustment lever 320 inclined forward.

And roll blind 100 having a single operation code according to the present invention, when the user pulls a single operation code (C) downward, the single operation code (C) is wound around the code pulley 310 to return to the initial position The code return unit 400 is provided.

The code return unit 400 includes a pulley restoration spring 410. The pulley restoration spring 410 as shown in FIG. 2 has a central axis 140 inside the cord pulley 310 as shown in FIG. One end of the pulley restoring spring 410 is positioned on the inner side of the cord pulley 310, and the other end of the pulley restoring spring 410 is fitted on the hexagonal part of the central shaft 140 to fix the bushing 420. It is fixed to).

Therefore, such a code return unit 400 when the user rotates the cord pulley 310 by the downward pull operation of the single operation code (C), the pulley recovery spring 410 is the cord pulley 310 and the bushing 420 Accumulate the torsional elastic force in between.

However, if the downward pull operation of the single operation cord (C) is resolved by using the torsionally elastic restoring force of the accumulated pulley restoration spring 410 by rotating the cord pulley 310 to code the single operation cord (C) The pulley 310 is wound up to return to the initial position.

Accordingly, the user pulls up and down the blind fabric W additionally by pulling the single operation code C raised and returned to the initial position through the cord return unit 400 to the lower part again.

In addition, the cord return unit 400 is a plurality of first one-way poles 314 of the moving clutch 240, as shown by the arrow in the counterclockwise direction in Figure 6, during the rotation operation of the cord pulley 310 The clutch clutch 258 also rotates the shift clutch 240 counterclockwise.

However, in the reverse rotation operation of the cord pulley 310 by the pulley restoring spring 410, as shown by the clockwise arrow in FIG. 6, the plurality of first one-way poles 314 of the cord pulley 310. They are elastically bent to pass over the third clutch 258 of the moving clutch 240 so that the reverse rotation of the moving clutch 240 is not performed.

Roll blind 100 having a single operation cord according to the present invention configured as described above, as shown in Figure 7a and 7b, by maintaining the lower adjustment lever 320 inclined forward to blind fabric (W) ) Can be lowered to the desired height.

That is, when the user pulls the single operation code C to the front side and as shown in FIG. 7A, when the lowering adjustment lever 320 remains inclined forward, as shown in FIG. 7B, the lowering adjustment lever ( The thick portion 352 of the upper side inclined surface 350 of 320 is in close contact with the end of the push rod 280 to move the push rod 280 to the left.

At this time, the push bar 284 is moved to the left side by the push rod 280 is located on the left side of the long hole 146 of the central axis 140.

In this case, the push rod 284 pushes the inner surface of the third cylindrical portion 248 of the shift clutch 240 to the left side so that the second clutch 254 of the shift clutch 240 rotates the ring of the direction shift clutch 210. Move to engage the gear clutch 214.

At this time, the first clutch 252 of the moving clutch 240 is separated from the central gear clutch 228 of the direction switching clutch 210.

Therefore, when the rotational force is transmitted from the moving clutch 240 through the ring gear clutch 214 of the direction switching clutch 210, the driving connector 122 rotates to lower the blind fabric W at 1: 1 speed. do.

That is, when the lower adjustment lever 320 is kept inclined forward, the second clutch 254 of the moving clutch 240 meshes with the ring gear clutch 214 of the direction switching clutch 210. In this state, when the user pulls the single operation cord C downward, the cord pulley 310 is rotated counterclockwise in FIG. 6.

The rotation of the cord pulley 310 rotates the third clutch 258 of the moving clutch 240 through the plurality of first one-way poles 314, and the second clutch 254 of the moving clutch 240 is rotated. The ring gear clutch 214 of the direction shift clutch 210 is rotated at a 1: 1 speed.

Therefore, the driving connector 122 connected to the direction switching clutch 210 rotates to lower the blind fabric W at a 1: 1 speed.

On the other hand, the pulley restoring spring 410 of the cord return unit 400 during the lowering operation of the blind fabric (W) accumulates the torsional elastic force, the accumulated accumulated when the downward pull operation of the single operation cord (C) is eliminated Using the torsionally elastic restoring force of the pulley restoring spring 410, the cord pulley 310 is reversely rotated to wind the single operation cord C around the cord pulley 310 and return to the original position.

Accordingly, the user pulls down the blind fabric W further by pulling the single operation code C raised and returned to the original position through the cord return unit 400 to the lower part again.

At this time, the lowering adjustment lever 320 is located in the second locking groove 388, the locking rod 382 of the posture maintaining part 380 is shown in Figure 7a, the lower adjustment lever 320 is forward It remains stable in an inclined state.

Therefore, the user lowers the blind fabric (W) to a desired height by repeatedly pulling the single operation cord (C) to the lower part while the lowering adjustment lever 320 is inclined forward.

On the other hand, the user can operate to raise the blind fabric (W) thus lowered again.

That is, as shown in FIGS. 8A and 8B, the lowering adjustment lever 320 is pushed backward to maintain the upright state.

As shown in FIG. 8A, when the user maintains the lower adjustment lever 320 in an upright state, as shown in FIG. 8B, the thickness of the upper inclined surface 350 of the lower adjustment lever 320 is increased. The thin portion 354 is in close contact with the end of the push rod 280, the push rod 280 is pushed to the right by the clutch restoring spring 260 is moved.

At this time, the push bar 284 is moved to the right side by the push rod 280 is located on the right side of the long hole 146 of the central axis 140.

In this case, the second clutch 254 of the shifting clutch 240 is separated from the ring gear clutch 214 of the shifting clutch 210, and the first clutch 252 of the shifting clutch 240 is the shifting clutch. Meshes with the central gear clutch 228 of < RTI ID = 0.0 > 210. < / RTI >

As such, when the user pulls the single operation cord C downward while the falling adjustment lever 320 is upright, the cord pulley 310 is rotated counterclockwise in FIG. 6.

The rotation of the cord pulley 310 rotates the third clutch 258 of the moving clutch 240 through the plurality of first one-way poles 314, and the first clutch 252 of the moving clutch 240 is rotated. The center gear clutch 228 of the direction shift clutch 210 is rotated.

The turning clutch 210 is a rotational force is transmitted from the moving clutch 240 through the central gear clutch 228, through which the central gear 222 of the turning clutch 210 is rotated and the planetary gear Ring gear 212 is reversed to the deceleration state through (216). As such, when the ring gear 212 rotates in the decelerated state, the driving connector 122 engaged with the ring gear 212 raises the blind fabric W while rotating in the decelerated state.

On the other hand, the pulley restoring spring 410 of the cord return unit 400 during the ascending operation of the blind fabric (W) accumulates the torsional elastic force, and the accumulated accumulation when the downward pull operation of the single operation cord (C) is eliminated Using the torsionally elastic restoring force of the pulley restoring spring 410, the cord pulley 310 is reversely rotated to wind the single operation cord C around the cord pulley 310 and return to the original position.

In addition, the user further raises the blind fabric W by pulling the single operation code C raised and returned to the initial position through the cord return unit 400 to the lower part again.

At this time, the lowering adjustment lever 320 is located in the first locking groove 386, the locking bar 382 of the posture maintaining part 380 is shown in Figure 8a, the lowering adjustment lever 320 is upright It remains stable.

Therefore, the user is to raise the blind fabric (W) to the desired height by repeatedly pulling the single operation code (C) to the lower portion in the state in which the lower adjustment lever 320 is located in the upright position.

As described above, the present invention comprises a pull cord for raising and lowering the blind fabric (W) as a single operation cord (C), and can be placed in a high position out of reach of young children by shortening the cord length.

In this state, when the single operation cord (C) is pulled directly underneath, the blind fabric (W) can be used as a rising code for decelerating and raising. When the single operation cord (C) is inclined to the front, and is pulled in an inclined state, it is blind. The fabric W can be used as a descending cord that drops at a 1: 1 speed.

In the present invention, once the single operation code (C) is pulled to the lower side, the home position return return operation of the single operation code (C) is automatically performed through the code return unit 400.

In addition, the present invention can immediately stop the rise or fall of the blind fabric (W) when the user releases the pull state of the single operation code (C).

In addition, the present invention is the rising operation is made in the deceleration is made by using the planetary gears 216 of the direction switching clutch 210 at the time of the rising operation of the blind fabric (W), the user smoothly without applying a large force Since the blind fabric W can be operated up, the convenience in use is greatly improved.

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 may variously modify or change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. Nevertheless, it will be apparent that all such modifications or variations will fall within the scope of the present invention.

Claims

In the roll blind apparatus, the blind fabric is wound around the winding rod or used to unwind from the winding rod,

A winding unit in which the blind fabric wound around the winding rod is increased by one side rotation of the driving connector connected to one side of the winding rod, and the blind fabric is lowered by the other side rotation of the driving connector and the winding rod;

A clutch having a direction switching clutch connected to one side of the drive connector, a moving clutch sliding axially with respect to the direction switching clutch, and coupling between clutches facing each other through left and right movement of the moving clutch with respect to the direction switching clutch And a separation is performed, and the lifting operation of raising the blind far end by pulling the single operation cord of the cord pulley connected to the moving clutch to the lower side in a state in which the first clutch of the moving clutch is coupled to the central gear clutch of the direction shifting clutch. part; And

A lowering adjustment lever is provided for moving the shifting clutch left and right, and the lowering adjustment lever forms a latch so that the lower end thereof is caught by a single operation code, and the lowering adjustment lever is pulled forward by pulling the single operation code to the front side. Rotating the movable clutch causes the second clutch to be coupled to the ring gear clutch of the direction shifting clutch, in which the single fabric of the cord pulley is pulled forward in an inclined state to lower the blind fabric. Roll blind having a single operation code, characterized in that configured to adjust the height of the blind fabric, including the lower operation unit.
The method of claim 1, wherein the directional clutch comprises a ring gear having one side connected to the drive connector, a plurality of planetary gears in the inner gear coupling to the ring gear, and a central gear geared at the center of the planet gears. The ring gear forms a ring gear clutch on one side thereof toward the moving clutch side, and the center gear forms a clutch disc having an enlarged diameter toward the moving clutch side, and a center gear clutch is formed on the outer circumferential surface of the clutch disc. And the ring gear clutch is disposed corresponding to the second clutch of the moving clutch, and the center gear clutch is disposed corresponding to the first clutch of the moving clutch.
According to claim 2, wherein the turning clutch is rotated to lower the blind fabric at a 1: 1 speed through the drive connector, when the rotational force is transmitted from the moving clutch through a ring gear clutch, the center of the turning clutch When the rotational force is transmitted from the moving clutch through the gear clutch, the ring gear is reversely rotated through the planetary gears to raise and lower the blind fabric through the drive connector.
The method of claim 1, wherein the moving clutch has a first cylindrical portion formed on one side thereof, the second cylindrical portion is reduced in diameter on the opposite side of the first cylindrical portion, the inside of the first cylindrical portion of the second cylindrical portion A third cylindrical portion extending to the opposite side is formed, while protruding a first clutch along the rim inner circumferential surface of the first cylindrical portion, protruding a second clutch along the rim of the first cylindrical portion, and an outer circumferential surface of the second cylindrical portion. And a third clutch, wherein the third clutch engages with a plurality of first one-way poles protruding from the cord pulley so that the moving clutch is always rotated in only one direction, and the circumference of the third cylindrical portion The clutch restoring spring is fitted into the clutch restraint, and the clutch restoring spring is supported by a fixed disk whose one end is fixed to the central shaft, and the other end is moved. Roll blind having a single operation code for a feature that is always in favor of the side of the cord pulley moving clutch to support the inner face value going to the central direction of the clutch gear switching clutch remains engaged state to the first clutch of the clutch movement.
According to claim 4, The movable clutch is a circular rod-shaped push rod is fitted so as to be able to slide in the shaft hole of the central shaft, one end of the push rod penetrates the bracket through which the central shaft is fixed, the upper end of the adjustment lever It is in close contact with the inclined surface, and the other end of the push rod protrudes in the both sides of the long hole formed in the axial direction of the central axis to support the inner surface of the third cylindrical portion of the moving clutch, the lower adjustment lever is the middle portion of the bracket It is mounted to the lower hinge shaft of the support plate fixed to the other side of the rotatable, and if the lowering adjustment lever is maintained in an upright position, the push rod is pushed to the right by the moving clutch to be located on the right side of the long hole of the central shaft, 1 The clutch moves to engage with the center gear clutch of the direction shift clutch, and the lower adjustment lever When it is kept inclined forward, the push rod is positioned on the left side of the long hole of the central axis while moving the push rod, and the second clutch of the shifting clutch is moved to engage the ring gear clutch of the direction shifting clutch by pushing the shifting clutch to the left. Roll blinds having a single operation cord, characterized in that during the left and right movement of the third clutch is moved to the left and right with respect to the plurality of first one-way poles protruding from the cord pulley.
2. The cord pulley according to claim 1, wherein the cord pulley forms a ring-shaped concave groove in which a single operation cord is wound on an outer circumferential surface thereof, and on one side thereof, a plurality of first unidirectional poles are formed on a third clutch formed on an outer circumferential surface of the second cylindrical portion of the moving clutch. Extends in an inclined state, and the ends thereof are gear-coupled, and when the cord pulley is rotated by the downward pull of the single operation cord, the single operation cord is rotated in the same direction together with the cord pulley. Having roll blinds.
According to claim 1, wherein the lowering adjustment lever is formed on the upper end of the inclined surface, and the lower end of the lower end to form a hanger for catching a single operation code, when the user pulls a single operation code forward, the lowering adjustment lever forward through the hanger Maintaining the inclined state, when the user pushes a single operation code backward, the lower adjustment lever is returned to the upright state, and the inclined surface is a thin portion close to the end of the pusher when the lower adjustment lever is kept upright. And the push rod is pushed to the right, and the lower adjustment lever is kept inclined forward, the roll blind having a single operation code, characterized in that the thick portion is in close contact with the tip of the push rod to move the push rod to the left.
The method of claim 7, wherein the lowering adjustment lever further includes a posture maintaining portion for maintaining the upright adjustment lever in an upright state, or inclined forward, wherein the posture maintaining portion protrudes the engaging rod on one side thereof; The locking rod moves in the first and second locking grooves formed concave in the inner side of the support plate. When the lowering adjustment lever moves to an upright position, the locking rod is positioned in the first locking groove so that the lowering adjustment lever is upright. When the lowering adjustment lever is moved to a state inclined forward, the locking rod is moved from the first locking groove and positioned in the second locking groove to maintain the lowering adjustment lever inclined forward, The support plate is characterized in that the upper end is integrally fixed to the bracket is arranged so as to surround the lowering adjustment lever between the bracket and Roll blinds with a single operation code.
The method of claim 1, further comprising a pulley recovery spring that accumulates elastic restoring force when the single pull cord is pulled downward to rotate the cord pulley to one side, and reverses the cord pulley by using the accumulated elastic restoring force of the pulley restoring spring. And a cord return unit which rotates and winds up the single operation cord around the cord pulley to return to the original position, wherein the pulley restoration spring is located about the central axis inside the cord pulley, One end is fixed to the inner surface of the cord pulley, the other end is fixed on the bushing fixed by being fitted on the hexagonal portion of the central axis, the pulley recovery spring during the rotation operation of the cord pulley by the downward pull operation of the single operation cord Accumulates the torsional elastic force, and when the downward pull operation of the single operation cord is eliminated, The torsionally elastic restoring force of the pulley restoring spring is used to reversely rotate the cord pulley, and the single operation cord is wound around the cord pulley and lifted and returned to the original position. Roll again with a single operation code, characterized in that to further raise or lower the blind fabric by pulling again under.
10. The method of claim 9, wherein the cord return unit, the plurality of first one-way poles of the cord pulley elastically bent to pass over the third clutch of the moving clutch during the reverse rotation operation of the cord pulley by the pulley restoring spring Roll blind having a single operation code, characterized in that.