KR20120040292A - Dual roll blind - Google Patents

Abstract

PURPOSE: A dual roll blind is provided to protect to move a roll screen in horizontal direction by preventing deflection of a winding bar and to improve durability of a moving structure to horizontally move the roll screen by always keeping the roll screen in horizontal direction. CONSTITUTION: A dual roll blind includes a first screen, a second screen, a first winding bar(31), a second winding bar(32), a first gear(23), a second gear(24), a driving wheel(50), and a sliding mechanism. The first screen and the second screen respectively have a shading unit and a floodlighting unit. The first winding bar and the second winding bar respectively wind the first screen and the second screen. The first gear and the second gear are respectively coupled to a first rotary shaft(13) and a second rotary shaft(14) and respectively rotates the first winding bar and the second winding bar. The driving wheel is rotated by a driving rope(51) and coupled to the first gear. The driving wheel delivers the torque of the driving rope to the first gear and the first winding bar. The sliding mechanism delivers the torque of the driving wheel to slide the first winding bar in longitudinal direction of the first rotary shaft.

Description

Dual roll blind}

The present invention relates to a dual roll blind, and more particularly, to a roll screen having a structure in which two roll screens are moved in a horizontal direction to control the amount of light, and a structure that can prevent falling down even when a winding rod is formed long. A dual roll blind.

In general, roll blinds are devices that are installed in transparent glass windows or glass walls to block the light from the outside to adjust the atmosphere of the room or to block the room from being seen from the outside.

Conventional roll blinds have a structure in which one roll screen having the same light transmittance as a whole can be wound around one winding rod to block light. The roll blind is a structure in which a roll screen is wound up on a winding rod fixed to an upper portion, and there is only a method of adjusting the height of the roll screen to control the amount of light transmitted.

The method of controlling the amount of light emitted by adjusting the height of the roll screen is that a part (lower part) is completely projected and a part (upper part) is completely blocked. There was a need for a structure that can control the amount of light.

In order to solve such a problem, conventionally, a method of adjusting the amount of light transmitted by arranging two roll screens in which the light transmitting portion and the light blocking portion are alternately arranged in the horizontal direction or the vertical direction so as to overlap each other and adjusting the overlapping amount is proposed. It also became.

Such a roll screen has a long length of the winding rod, the winding rod is struck down, which prevents the roll screen from operating normally.

In particular, the method of adjusting the permeation amount of the roll screen by moving the roll screen in a horizontal direction forms one winding rod short of the two winding rods, and the short winding rod is capable of horizontal movement on the axis protruding from the supporting structure formed on both sides of the roll screen. Combined. Accordingly, while the short winding rod changes the overlap amount with the shaft protruding from the support structure according to the moving direction, the winding rod may be struck downward in a portion where the overlapping amount is not large. This deflection phenomenon is larger as the roll screen moves, or as the length of the winding rod becomes longer.

Thus, even if the distance moving in the horizontal direction of the roll screen or the length of the winding rod is long, there is a need for a structure that prevents the roll screen from hitting the bottom, the roll screen can be easily wound on the winding rod.

In addition, the structure for preventing sagging of the winding rod of the roll blind should be formed in a structure that does not prevent movement in the horizontal direction of the roll screen.

The technical problem to be achieved by the present invention is a roll screen having a structure for adjusting the amount of light transmission by moving the two roll screen in the horizontal direction, a dual roll blind having a structure that can prevent falling down even if the winding rod is formed long It is to provide.

Technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Dual roll blind according to an embodiment of the present invention for achieving the technical problem, the first screen and the second screen including a light transmitting portion and the light shielding portion, respectively, and winding the first screen and the second screen A first winding rod and a second winding rod, a first rotation shaft and a second rotation shaft to which the first winding rod and the second winding rod are respectively coupled, and a first coupling rod coupled to the first rotation shaft to drive the rotation of the first winding rod. A first gear, a second gear that is coupled to the second rotation shaft and is slaved to the first gear, and rotates the second winding rod, rotates by a drive string, and is coupled to the first rotation shaft, the drive string The driving wheel for transmitting the rotational force of the first gear and the take-up rod and the driving wheel, and is received by the rotational force of the drive wheel to slide the first take-up rod in the longitudinal direction of the first rotary shaft Is a slide drive mechanism, the first winding rod and the second winding rod is accommodated, a structure having a guide rail parallel to the first winding rod on one side, the proximal end is slidably coupled to the guide rail, the front end is the first 1 includes a support member rotatably coupled to the peripheral surface of the winding rod.

A slide cylinder fixed to the first winding rod and slidingly integrally interposed between the first rotation shaft and the first winding rod is interposed.

Guide grooves to which the support member is coupled are formed in a ring shape on both circumferential surfaces of the first winding rod or the slide cylinder, and an opening is formed at a front end of the support member so as to be fitted into the circumference of the guide groove. Shaped joints are formed.

The first rotating shaft includes a support integrally formed on an inner surface of the support frame, and an extension part which is manufactured separately from the support and fixedly coupled to the support.

A pair of fixing protrusions elastically opened radially outward is provided at the front end of the support, and a protruding groove is formed at the proximal end of the extension to be fitted outside the front end of the support, and the fixing protrusion is inserted into the coupling groove. Radial coupling holes are formed.

A plug interposed between the first rotating shaft and the slide cylinder and having a concave groove extending in a longitudinal direction on an outer circumferential surface thereof, a clutch hub fitted to a proximal end of the plug, and a clutch plug and a clutch fitted to the outside of the first rotating shaft; A torsion spring for elastically connecting the hubs is further provided. A protective tube is coupled to the outside of the first rotating shaft, and the torsion spring is fitted to the outside of the protective tube.

The dual roll blind according to the present invention prevents the winding rod from being struck downward, thereby preventing the roll screen from moving in the horizontal direction and preventing the roll rod from moving downward. In this way, as the roll screen is always maintained in the horizontal direction, the durability of the horizontal movement structure of the roll screen is improved, thereby improving the reliability of the product.

In addition, the dual roll blind according to the present invention prevents the winding rod from beating downward, does not interfere with the rotation of the winding rod, does not affect the operation of the roll blind, and there is little resistance to the winding rod to move in the horizontal direction. The overall durability can be improved by minimizing the influence on the horizontal movement structure of the roll screen.

1 is a perspective view of a dual roll blind according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the dual roll blind of FIG. 1.
3 is a front sectional view of the dual roll blind of FIG. 1.
4 is an exploded perspective view showing the main part of the dual roll blind of FIG.
5 is a side cross-sectional view of the dual roll blind of FIG. 3 taken along line AA.
6 is a front sectional view showing the main part of the dual roll blind of FIG.
FIG. 7 is an exploded perspective view illustrating a driving wheel, a clutch ring, and a connecting drive shaft included in the dual roll blind of FIG. 1.
8 is a front sectional view showing the clutch mechanism of the dual roll blind of FIG.
FIG. 9 is a cross-sectional view taken along line BB of the clutch mechanism of FIG. 8. FIG.
10 is a side cross-sectional view illustrating a method of connecting the clutch hub and the plug of the dual roll blind of FIG. 1.
FIG. 11 is an operation state diagram for describing an operation process of the clutch mechanism included in the dual roll blind of FIG. 1.
12 is an operation state diagram for explaining the operation of the slide drive mechanism included in the dual roll blind of FIG.
13 to 14 are views for explaining the operation of the dual roll blind of FIG.
15 is an exploded perspective view showing another embodiment of the dual roll blind of FIG.
FIG. 16 is a front sectional view showing a first axis of rotation of the dual roll blind shown in FIG. 15.
17 is an exploded perspective view showing a modification of the clutch hub of the dual roll blind of FIG.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, the invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a dual roll blind according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 13.

1 is a perspective view of a dual roll blind according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the dual roll blind of FIG.

Dual roll blind (1) according to an embodiment of the present invention is a device that can control the opening and closing of the roll screen (41, 42) as well as the amount of light at a time only by the operation of one drive line (51).

The dual roll blind 1 includes two roll screens 41 and 42 each including a light shield 44 and a light-transmitting portion 43, and two winding rods 31 winding two roll screens 41 and 42, respectively. , 32 and a drive line 51 for rotating the two winding rods 31 and 32.

Specifically, referring to FIGS. 1 and 2, a first screen 41 and a second screen 42 are formed inside a structure composed of a support frame 15, a clutch body 11, and an end body 12. Each of the first winding rod 31 and the second winding rod 32 wound up is accommodated.

The supporting frame 15 forms a supporting structure of the dual roll blind 1 together with the clutch body 11 and the end body 12, and has a first winding rod 31 and a second winding rod 32 therein. To accept. The support frame 15 forms a support structure in which the dual roll blinds 1 can be fixed to the ceiling or the window frame.

The support frame 15 connects the clutch body 11 and the end body 12, and its length may be adjusted according to the length of the first winding rod 31 and the second winding rod 32 therein. The support frame 15 may be formed on the upper or front and rear surfaces of the first winding rod 31 and the second winding rod 32. For example, as shown in Figure 2, the cross section connecting the upper surface and the front and rear top may be configured as a 'wa' shaped frame. That is, the supporting frame 15 shown in FIG. 2 not only serves as a supporting structure but also protects the first winding rods 31 and the second winding rods 32 and prevents penetration of dust and the like. You can be together.

The clutch body 11 and the end body 12 are coupled to both ends of the support frame 15. In addition, the first winding rod 31 on which the first screen 41 is wound and the second winding rod 32 on which the second screen 42 is wound are rotated between the clutch body 11 and the end body 12. Possibly combined.

The first rotating shaft 13 and the second rotating shaft 14 are formed at one side of the clutch body 11, and the first gear 23 and the second rotating shaft 13 and the second rotating shaft 14, respectively. Gear 24 is engaged.

On the other hand, the clutch mechanism 70 and the slide drive mechanism 60 are formed in the first rotation shaft 13. The clutch mechanism 70 and the slide drive mechanism 60 selectively transmit rotational force to the first winding rod 31 and the second winding rod 32 or adjust the light emission amount of the dual roll blind 1. do. The clutch mechanism 70 and the slide drive mechanism 60 will be described later in detail.

The clutch body 11 includes a first rotation shaft 13 and a second rotation shaft 14 into which the first gear 23 and the second gear 24 are inserted, respectively. The first gear 23 as a driving gear is inserted into the first rotation shaft 13, and the second gear 24 as a driven gear is inserted into the second rotation shaft 14. Accordingly, the first gear 23 and the second gear 24 are meshed with each other, and the second gear 24 rotates in dependence on the first gear 23.

However, as shown in FIG. 2, the first gear 23 and the second gear 24 are not limited to being directly engaged with each other, and the first gear 23 and the second gear 24 as necessary. One or more intermediate gears (not shown) may be included in between.

On the other hand, the first rotary shaft 13 may be formed longer than the second rotary shaft 14 so that the slide drive mechanism 60 to be described later is installed. The first rotation shaft 13 and the second rotation shaft 14 are disposed at a distance that can be engaged in consideration of the sizes of the first gear 23 and the second gear 24.

The first rotating shaft 13 and the second rotating shaft 14 may be disposed to be shifted in an oblique direction. Since the 1st rotation shaft 13 and the 2nd rotation shaft 14 become the rotation shafts of the 1st winding rod 31 and the 2nd winding rod 32, arrangement | positioning of the 1st rotation shaft 13 and the 2nd rotation shaft 14 is carried out. The relationship affects the distance between the first screen 41 and the second screen 42 wound on the first winding rod 31 and the second winding rod 32, respectively. For example, when the first rotary shaft 13 and the second rotary shaft 14 are arranged in the horizontal direction, the initial distance between the first screen 41 and the second screen 42 may be greater. However, when the first rotation shaft 13 and the second rotation shaft 14 are arranged to be shifted in an oblique direction, the first rotation shaft 13 and the second rotation shaft 14 may be arranged to minimize the gap between the first screen 41 and the second screen 42, and the clutch body may be disposed. There is an advantage that the size of (11) can also be compactly reduced.

The first gear 23, the clutch hub 29, the clutch ring 71, and the driving wheel 50 are continuously inserted into the first rotation shaft 13. The first gear 23 and the clutch hub 29 are constantly engaged, and the driving wheel 50 controls the driving force generated by the drive line 51 through the clutch hub 29 and the clutch ring 71. 1 transmission to the gear (20).

The first gear 23 is coupled to the drive wheel 50 driven by the drive line 51, the first gear 23 is the first screen 41 by using the driving force transmitted by the drive wheel 50. ) Is unwound / wound on the first winding rod (31). At the same time, the second gear 24 unwinds / winds the second screen 42 onto the second winding rod 32.

The end body 12 supports the first winding rod 31 and the second winding rod 32 together with the clutch body 11, and serves as a rotating shaft of the first winding rod 31 and the second winding rod 32. It includes two end shafts (25, 26).

The first screen 41 and the second screen 42 overlap each other to form one roll screen 41 and 42. That is, the roll screens 41 and 42 open and close by simultaneously raising or lowering two layers of the first screen 41 and the second screen 42, and the first and second screens 41 and 42. The amount of light shielding is controlled by adjusting the overlapping range of each of the light shielding units 44 included in the light shielding unit 44.

As described above, the first screen 41 and the second screen 42 are separated from each other.

The first screen 41 and the second screen 42 each include a light shield 44 and a light projector 43. Here, the light blocking portion 44 is a portion where light is blocked, and the light transmitting portion 43 refers to a portion through which light is transmitted, but the light blocking amount and the light transmitting amount of the light blocking portion 44 and the light transmitting portion 43 are respectively 100%. It does not mean that it can be used relative to each other. For example, the light transmission portion 44 may have a light emission amount of 20%, and the light transmission portion 43 may have a light emission amount of 80%. That is, the light shielding portion 44 refers to a portion having a relatively small amount of light transmission, and the portion of the high light transmission amount on the entire surface of the first screen 41 and the second screen 42 is the light transmission portion 43, and the portion of the low light emission amount is The light blocking unit 44 may be referred to.

Meanwhile, the light blocking part 44 and the light transmitting part 43 may be formed in a stripe shape. For example, as shown in FIG. 1, stripes may be formed in a direction perpendicular to the first winding rods 31 and the second winding rods 32. As such, the light blocking part 44 and the light transmitting part 43 may be alternately disposed.

In addition, the widths of the light blocking part 44 and the light transmitting part 43 may be the same, or the width of the light blocking part 44 may be larger than the width of the light transmitting part 43. That is, the light shielding portion 44 of the first screen 41 and the light shielding portion 44 of the second screen 42 are alternately arranged so that at least the light shielding portion can shield the whole of the roll screens 41 and 42. The width of the 44 is preferably formed to be equal to or larger than the width of the light transmitting portion 43.

The pattern of the light blocking part 44 and the light transmitting part 43 is not limited to the stripe shape arranged horizontally, and may be modified in various forms. For example, the pattern may be formed in a stripe pattern, a dot pattern, or the like arranged in diagonal lines.

On the other hand, the first gear 23 and the second gear 24 are directly engaged with each other, so that the rotational directions are opposite to each other. Accordingly, the first winding rod 31 and the second winding rod in order for the first gear 23 and the second gear 24 to raise or lower the first screen 41 and the second screen 42 at the same time. The winding direction of the 1st screen 41 and the 2nd screen 42 wound by 32 become mutually opposite directions. For example, when the first winding rod 31 rotates clockwise, the first screen 41 is wound around the first winding rod 31 so that the first screen 41 rises, and the second winding rod ( When 32 is rotated counterclockwise, the second screen 42 may be wound around the second winding rod 32 so that the second screen 42 is raised. In this manner, when the first screen 41 and the second screen 42 are wound on the first winding rod 31 and the second winding rod 32, the first screen 41 and the second screen 42 are wound. The first screen 41 and the second screen 42 can be raised or lowered simultaneously while minimizing the gap therebetween.

However, the winding directions of the first screen 41 and the second screen 42 are not limited to the opposite directions. For example, when an intermediate gear (not shown) is inserted between the first gear 23 and the second gear 24, the first gear 23 and the second gear 24 may rotate in the same direction. Can be. Therefore, the winding directions of the first screen 41 and the second screen 42 wound on the first winding rod 31 and the second winding rod 32 become the same.

Meanwhile, the first winding rod 31 has slide cylinders 61 inserted at both sides thereof, and the slide cylinders 61 at both sides allow sliding motions along the first rotation shaft 13 and the end shaft 25, respectively. do. That is, the first winding rod 31 is fixed to the first rotation shaft 13 and the end shaft 25 to perform a parallel movement. Therefore, the load of the first winding rod 31 is distributed and supported by the first rotation shaft 13 and the end shaft 25.

The first rotating shaft 13 and the end shaft 25 are formed to protrude from the clutch body 11 and the end body 12, respectively, and according to the movement amount of the first winding rod 31, the first rotating shaft 13 and the end The bending moment acting on the shaft 25 will be different. In particular, when the moving amount of the first winding rod 31 is large, the bending moment acting on the first rotation shaft 13 and the end shaft 25 is increased, so that the first winding rod 31 is struck downward. Is generated or there is a high possibility that the first rotation shaft 13 or the end shaft 25 is damaged.

Accordingly, the support member 80 serves to distribute the load of the first winding rod 31 to the support frame 15. That is, the load of the first winding rod 31 is distributed by the first rotation shaft 13, the end shaft 25, and the support frame 15.

The support member 80 has a coupling groove 81 formed at an upper end portion thereof, and is slidably coupled to the guide rail 15a of the support frame 15. The guide rail 15a may protrude from the inside of the support frame 15 and may be formed in parallel with the first winding rod 31 and the second winding rod 32. Therefore, the support member 80 may be slidably coupled in a direction parallel to the first winding rod 31 by the coupling groove 81 inserted into the guide rail 15a.

On the other hand, the front end portion of the support member 80 is formed with a coupling portion 82 to which both ends of the slide cylinder 61 is coupled. The coupling portion 82 is formed in a hook shape having an opening 82a formed at the front thereof, and the slide cylinder 61 is rotatably coupled through the opening 82a. The coupling of the support member 80 and the slide cylinder 61 will be described later in detail.

In the present specification, the support member 80 is attached and described only with respect to the shape coupled to the slide cylinder 61, but is not necessarily limited thereto. For example, the support member 80 may be rotatably coupled to both ends of the first winding rod 31. Therefore, the support member 80 may be rotatably coupled to both circumferential surfaces of either the first winding rod 31 or the slide cylinder 61. Here, the both ends of the first winding rod 31 or the slide cylinder 61 is a slide cylinder (inserted at both ends of the first winding rod 31 and both ends of the first winding rod 31, respectively) As well as each one side of 61, one side of the first winding rod 31 and one side of the slide cylinder 61 may be included, respectively.

In addition, the coupling groove 81 is not limited to the base end portion of the supporting member 80, but is a means capable of horizontally moving in a direction parallel to the first winding rod 31 in combination with the supporting frame 15. Anything is possible.

Hereinafter, the slide drive mechanism and the clutch mechanism will be described in detail with reference to FIGS. 3 to 6.

Figure 3 is a front sectional view of the dual roll blind of Figure 1, Figure 4 is an exploded perspective view showing the main portion of the dual roll blind of Figure 1, Figure 5 is a side cross-sectional view of the dual roll blind of FIG. 6 is a front sectional view showing main parts of the dual roll blind of FIG. 1, FIG. 7 is an exploded perspective view illustrating a driving wheel, a clutch ring, and a connecting drive shaft included in the dual roll blind of FIG. 1, and FIG. 8 is a view of FIG. 8. It is a front sectional view which shows the clutch mechanism of the dual roll blind of 1, and FIG. 9 is sectional drawing which cut | disconnected the clutch mechanism of FIG.

The slide drive mechanism 60 is installed on one side of the first rotary shaft 13 in parallel with the axial direction (lengthwise direction) of the first rotary shaft 13 and has a drive gear 62a and a threaded portion 62b formed at both ends, respectively. The drive shaft 62 is included. Therefore, when the driving wheel 50 rotates, the connecting drive shaft 62 rotates, and the slide cylinder 61 can slide in parallel with the axial direction of the first rotating shaft 13.

The slide cylinder 61 is interposed between the first rotation shaft 13 and the first winding rod 31 and is fixed to the first winding rod 31 to perform a sliding movement integrally. Specifically, as shown in FIG. 3, the slide cylinder 61 is coupled to the first rotation shaft 13 and the end shaft 25, respectively, and is inserted and fixed at both ends of the first winding rod 31, respectively. do. Therefore, the slide cylinder 61 can move parallel to the axial direction of the 1st rotating shaft 13 with the 1st winding rod 31. As shown in FIG.

As shown in FIG. 3, a screw groove 61a is formed at a side surface of the slide cylinder 61 in a direction parallel to the first rotation shaft 13. The screw groove 61a may be formed on the inner circumferential surface of the slide cylinder 61, and may be formed through the side wall of the slide cylinder 61.

The screw groove 61a may be composed of, for example, a plurality of grooves (see 61a of FIG. 11) forming a predetermined angle with the first rotation shaft 13 inside the slide cylinder 61. Therefore, one end of the threaded portion 62b of the connecting drive shaft 62 is inserted into the screw groove 61a, so that the threaded portion 62b can rotate along the screwed groove 61a.

Meanwhile, as shown in FIG. 6, the screw part 62b may be formed in a coil shape surrounding the connection driving shaft 62. That is, the screw portion 62b is formed in a form in which the wire surrounds the connection drive shaft 62, and the wire plays a role as a gear tooth. Therefore, the screw portion 62b and the screw groove 61a move the slide cylinder 61 to the left and right by the screwing action. At this time, the screw portion 62b and the screw groove 61a may be configured in the form of a right-hand screw.

The slide cylinder 61 is linearly moved by the rotation of the connecting drive shaft 62. The driving shaft 62 is coupled to the driving gear 62a engaged with the driving wheel 50 at one end thereof, and a screw portion 62b coupled to the screw groove 61a is formed at the other end thereof. Therefore, the drive gear 62a and the screw portion 62b are integrally rotated in the same direction.

6 and 7, the driving wheel 50 is rotatably coupled to the first rotation shaft 13, and a gear part 53 to which the driving gear 62a is engaged is formed on an inner circumferential surface thereof. That is, the gear unit 53 is a kind of internal gear, and the driving gear 62a may be inserted into the driving wheel 50 to rotate. The connection drive shaft 62 is formed in parallel with the first rotation shaft 13, the drive wheel 50 and the drive gear 62a is the same in the rotation axis direction.

On the other hand, the gear portion 53 of the drive wheel 50 is not necessarily limited to the internal gear. For example, the gear portion may be formed in the form of a spur gear on the outer circumferential surface of the driving wheel 50, and the drive gear 62a may be formed in the form of a planetary gear that is external to the gear portion.

The connection drive shaft 62 is rotatably inserted into the concave groove 28 formed in the plug 21 coupled to the first rotation shaft 13. The concave groove 28 is formed long in the axial direction of the first rotation shaft 13 on the outer circumferential surface of the plug 21.

The clutch mechanism 70 serves to selectively transmit the rotational driving force of the drive wheel 50 to the second winding rod 32. Specifically, the clutch mechanism 70 controls the slide cylinder 61 to move in parallel during the period without rotating driving force temporarily transmitted to the first gear 23 according to the rotational direction of the drive wheel 50.

The clutch mechanism 70 includes a clutch hub 29 coupled to the first rotation shaft 13 and a clutch ring 71 interposed between the clutch hub 29 and the driving wheel 50 as main components. Specifically, the clutch hub 29 is interposed between the first rotation shaft 13 and the driving wheel 50, and is coupled to the first gear 23.

In addition, the clutch hub 29 is connected to the plug 21 through the torsion spring 18, so that the first gear 23, the clutch hub 29 and the plug 21 are integrally rotated.

In detail, the plug 21 has a cylindrical shape with one end open, and the clutch hub 29 is inserted into the opening of the plug 21. In this case, a pair of fixing protrusions 13a which are elastically opened radially outward is provided at the front end of the first rotation shaft 13, and a coupling groove 21c to which the fixing protrusions 13a are coupled to the circumferential surface of the plug 21. ) Is formed in the radial direction. Accordingly, when the plug 21 is inserted into the first rotation shaft 13, the fixing protrusion 13a is inserted into the coupling groove 21c so that the plug 21 is integrally rotated with the first rotation shaft 13. That is, the length of the first rotating shaft 13 is formed shorter than the length of the plug 21, the fixing projection (13a) formed at the end of the first rotating shaft 13 is coupled to each other with the middle portion of the plug 21. . Therefore, the plug 21 may be coupled to the first rotation shaft 13 and extend longer than the first rotation shaft 13.

The torsion spring 18 is manufactured by winding a coil of elastic metal wire in a coil shape, and both ends thereof extend outwardly. At this time, as shown in Figure 10, a pair of extension arms (29a) is provided on both sides of the front end portion of the clutch hub 29, the extension tube (21a) formed on the proximal end of the plug 21 to the extension arm (29a) A corresponding coupling hole 21b is formed, and the torsion spring 18 is coupled to the outside of the first rotation shaft 13 so that both ends 18a are fitted to the coupling hole 21b through the space between the extension arms 29a. The clutch hub 29 and the plug 21 are configured to be able to elastically move relative to the circumferential direction.

At this time, the first rotating shaft 13 is coupled to the protective tube 19 made of a metal material, the torsion spring 18 is fitted to the outside of the protective tube 19.

Therefore, when the clutch hub 29 and the plug 21 are rotated while being fitted to the first rotation shaft 13, the inner circumferential surface of the torsion spring 18 is in contact with the first rotation shaft 13 to allow the first rotation shaft 13 to be rotated. To prevent scratches and damage to the periphery.

A spiral groove 27 is formed on the outer circumferential surface of the clutch hub 29. The spiral groove 27 may be formed, for example, in the direction of the left screw, and becomes a path through which the inner protrusion 71a of the clutch ring 71 is inserted and moved.

The clutch ring 71 includes at least one inner protrusion 71a on the inner side and at least one outer protrusion 71b on the outer side. The clutch ring 71 is formed in a hollow ring shape, and the clutch hub 29 is inserted therein. The inner protrusion 71a of the clutch ring 71 is inserted into the spiral groove 27 of the clutch hub 29 so that the clutch ring 71 rotates along the outer circumferential surface of the clutch hub 29. This spiral groove 27 allows a kind of delay period in which no power is transmitted between the clutch hub 29 and the drive wheel 50.

At this time, the clutch ring 71 is the maximum rotation angle is determined according to the length of the spiral groove (27). That is, the clutch ring 71 does not rotate together with the clutch hub 29 in the section in which the inner projection 71a moves along the spiral groove 27, but the inner projection 71a is disposed at the end of the spiral groove 27. In contact, the clutch hub 29 and the clutch ring 71 rotate together. The section in which the clutch ring 71 does not rotate together with the clutch hub 29 is a section in which the slide cylinder 61 moves in parallel. Therefore, the longer the length of the spiral groove 27 is, the longer the parallel movement section of the slide cylinder 61 is. That is, when the gap between the light shielding portion 44 and the light transmitting portion 43 of the roll screens 41 and 42 is wide, the spiral groove 27 may be formed long.

On the other hand, the driving wheel 50 is formed with a long groove 54 to move the outer protrusion 71b of the clutch ring 71 therein. The long groove 54 is formed on the inner side of the driving wheel 50 and is elongated in a direction parallel to the first rotation shaft 13. The long groove 54 may be formed by the number of the outer protrusions 71b of the clutch ring 71, the length of the long groove 54 may represent the distance that the clutch ring 71 can move.

Hereinafter, referring to FIGS. 11 and 12, the operation of the clutch mechanism and the slide drive mechanism of the dual roll blind will be described.

FIG. 11 is an operating state diagram for explaining an operation process of the clutch mechanism included in the dual roll blind of FIG. 1, and FIG. 12 is an operating state diagram for explaining the operation of the slide driving mechanism included in the dual roll blind of FIG. 1.

First, referring to FIG. 11A, the driving wheel 51 is operated to rotate the driving wheel 50 clockwise. At this time, the driving wheel 50 rotates the clutch ring 71 inserted into the driving wheel 50. The clutch ring 71 has an outer protrusion 71b inserted into the long groove 54 of the driving wheel 50, so that the clutch ring 71 rotates along the driving wheel 50.

On the other hand, while the inner projection 71a of the clutch ring 71 is in contact with the end of the spiral groove 27, the rotational force of the clutch ring 71 is transmitted to the clutch hub 29. Accordingly, the clutch hub 29 rotates clockwise together with the driving wheel 50, and the first gear 23 and the plug 21 coupled to the clutch hub 29 rotate together.

Subsequently, referring to FIG. 11B, the driving wheel 51 is operated to rotate the driving wheel 50 counterclockwise. In this case, the driving wheel 50 rotates the clutch ring 71 inserted into the driving wheel 50 together. The clutch ring 71 rotates together along the driving wheel 50, but the inner protrusion 71a of the clutch ring 71 moves along the spiral groove 27, and the clutch hub 29 is the clutch ring ( Do not rotate with 71). That is, the clutch ring 71 rotates along the outer edge of the clutch hub 29, and the outer protrusion 71b of the clutch ring 71 moves along the long groove 54 of the driving wheel 50.

Accordingly, the clutch ring 71 moves in parallel with the first rotation shaft 13 along the first rotation shaft 13.

At this time, the driving wheel 50 is rotated in the counterclockwise direction, but the clutch hub 29 does not rotate, the first gear 23 and the plug 21 coupled to the clutch hub 29 does not rotate.

Subsequently, referring to FIG. 11C, when the driving wheel 50 is continuously rotated counterclockwise, the inner protrusion 71a of the clutch ring 71 is in contact with the other end of the spiral groove 27. do. In this case, the parallel movement of the clutch ring 71 is stopped, and the rotational force of the clutch ring 71 is transmitted to the clutch hub 29. Accordingly, the clutch hub 29 rotates counterclockwise, which is the same direction as the drive wheel 50, and the first gear 23 and the plug 21 coupled to the clutch hub 29 also rotate counterclockwise. Done.

In conclusion, (a) and (c) of FIG. 10 in which the plug 21 rotates, the first screen 41 is a section in which the first screen 41 rises or falls, and the plug 21 does not rotate in FIG. b) is a section in which the first screen 41 moves in parallel in the axial direction of the first rotation shaft 13.

In section (b) of FIG. 11, the plug 21 does not rotate while the driving wheel 50 rotates in the counterclockwise direction, and the driving gear 62a is in contact with the gear portion 53 of the driving wheel 50. ) Will rotate.

When the drive gear 62a rotates, as shown in FIG. 11, the connecting drive shaft 62 rotates, and when the connecting drive shaft 62 rotates, the screw portion 62b and the screw groove 61a are screwed. The slide cylinder 61 is moved in parallel by this.

The dual roll blind according to the present invention can simultaneously control the opening and closing of the roll screen and the light emission amount by operating one drive line. In particular, the opening and closing structure of the roll screen and the light emission control structure are manufactured in one simple and reliable machine structure, and the cost saving effect due to the simplification of the structure is excellent, and the durability is excellent even by repeated operation.

In particular, the clutch mechanism interposed between the first rotating shaft and the driving wheel to selectively transfer the driving force of the driving wheel to the first take-up roll can control a delay time during which the driving force is not transmitted by the coupling of the clutch ring and the clutch hub. Has a structure. Such a structure can easily adjust the horizontal movement distance of the first screen, so that even if the width of the light shielding portion and the light transmitting portion of the first screen and the second screen can be easily applied to various products by simply replacing the clutch hub.

In addition, the support member 80 for supporting both ends of the first winding rod 31 is further provided, the support member 80 is slidably coupled along the guide rail (15a). Therefore, since the support member 80 slides in the horizontal direction along with the first winding rod 31 to support the first winding rod 31, the first winding rod 31 can be effectively prevented from sagging downward. There is an advantage. In particular, the support member 80 is coupled to the guide groove 61a formed in the slide cylinder 61 to support the support member 80 so as not to twist when the first winding rod 31 is slid in the left and right directions. There are advantages to it.

Then, the torsion spring 18 connecting the plug 21 and the clutch hub 29 is fitted to the outside of the protective tube 19 coupled to the first rotation shaft 13, the first rotation shaft by the torsion spring 18 There is an advantage that can prevent (13) from being damaged.

In the present embodiment, the guide groove 61a is illustrated in the slide cylinder 61, but if necessary, the guide groove 61a may be formed at both ends of the first winding rod 31. Do.

And, Figure 15 is an exploded perspective view showing another embodiment of the dual roll blind of Figure 1, Figure 16 is a front sectional view showing a first axis of rotation of the dual roll blind shown in FIG.

According to this, the first rotation shaft 13 is integrally formed on the inner surface of the clutch body 11 and the extension part 17 which is manufactured separately from the support part 16 and fixedly coupled to the support part 16. It is divided into two parts.

The support portion 16 is integrally injection molded on the inner surface of the clutch body 11 and the front end portion is provided with a pair of fixing projections 16a that elastically spread radially outward. Extension portion 17 is formed in the proximal end of the engaging groove (17a) is fitted to the outside of the front end of the support portion 16, the circumferential surface of the coupling groove (17a) in the radial coupling hole (fitting projection 16a is fitted) 17b) is formed. Therefore, as shown in FIGS. 16A and 16B, when the coupling groove 17a of the extension portion 17 is inserted into the tip of the support portion 16, the fixing protrusion 16a engages with the coupling hole 17b. It is fitted in the extension 17 is fixed so as not to fall out.

Accordingly, the first rotary shaft 13 is formed separately from the support 16 and the support 16 formed integrally with the inner surface of the clutch body 11 and the support 16. Since it is manufactured by dividing into an extension part 17 fixedly coupled to the clutch, the length of the injection molded part integrally with the clutch body 11 can be reduced, so that the difficulty of injection molding can be reduced, and the first rotating shaft 13 is deformed during cooling. Can be prevented.

In addition, the clutch hub 29 is made long enough as shown in Figure 17, the clutch hub 29 can be inserted into the plug 21, it is possible to increase the strength of the plug 21. .

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: dual roll blind 11: clutch body
12: end body 13: first axis of rotation
14: second axis of rotation 15: support frame
15a: guide rail 16: support
17: extension 18; Torsion spring
19; Protective body 21: plug
23: first gear 24: second gear
25, 26: end shaft 27: spiral groove
28: concave groove 29: clutch hub
31: first winding rod 32: second winding rod
41: first screen 42: second screen
50: drive wheel 51: drive line
53: gear portion 54: long groove
60: slide drive mechanism 61: slide cylinder
61a: thread groove 62: drive shaft
62a: drive gear 62b: screw portion
71: clutch ring 71a: internal protrusion
71b: outer protrusion 80: support member

Claims (6)

A first screen and a second screen each including a light transmitting part and a light blocking part;
First and second winding rods respectively winding the first screen and the second screen;
A first rotating shaft and a second rotating shaft to which the first winding rod and the second winding rod are coupled, respectively;
A first gear coupled to the first rotation shaft to rotationally drive the first winding rod;
A second gear coupled to the second rotational shaft and dependent on the first gear to rotate and rotate the second winding rod;
A drive wheel that rotates by a drive line and is coupled to the first rotation shaft to transfer the rotational force of the drive line to the first gear and the winding rod;
A slide driving mechanism engaged with the driving wheel and sliding the first winding rod in the longitudinal direction of the first rotation shaft by receiving the rotational force of the driving wheel;
A structure in which the first winding rod and the second winding rod are rotatably coupled to each other, and one side of which has a guide rail parallel to the first winding rod; And
And a proximal end portion slidably coupled to the guide rail in a direction parallel to the first winding rod, and a front end portion including a support member rotatably coupled to a circumferential surface of the first winding rod. The method of claim 1,
The dual roll blind, characterized in that between the first rotary shaft and the first winding rod is a slide cylinder fixed to the first winding rod and sliding sliding integrally. 3. The method according to claim 1 or 2,
A guide groove to which the support member is coupled is formed in a ring shape on both circumferential surfaces of either the first winding rod or the slide cylinder, and an opening is formed at the front end of the support member to form a circumference of the guide groove. Dual roll blinds, characterized in that the hook-shaped coupling portion to be fitted to. The method of claim 1,
The first rotating shaft is a dual roll blind, characterized in that the support is formed integrally with the inner surface of the support frame, and the extension is made separately from the support and fixedly coupled to the support. The method of claim 4, wherein
A pair of fixing protrusions elastically opened radially outward is provided at the front end of the support, and a protruding groove is formed at the proximal end of the extension to be fitted outside the front end of the support, and the fixing protrusion is inserted into the coupling groove. Dual roll blinds characterized in that the coupling holes in the radial direction. The method of claim 2,
A plug interposed between the first rotating shaft and the slide cylinder and having a concave groove extending in a longitudinal direction on an outer circumferential surface thereof, a clutch hub fitted to a proximal end of the plug, and a clutch plug and a clutch fitted to the outside of the first rotating shaft; A torsion spring for elastically connecting the hub to each other is further provided, wherein the protective tube is coupled to the outside of the first support shaft and the torsion spring is fitted to the outside of the protective tube, dual roll blinds.

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