TWI782872B - Roll-up blinds - Google Patents

Abstract

A retractable blind device, wherein when a blind body and two inner guide rails are assembled, a cord is respectively sleeved in each inner cord by a convex strip on each of the cord side bands of the two cords One of the hollow grooves of the guide rails, and each of the side strips of the curtain can pass through a slit of each of the inner guide rails, so that the curtain can be retracted up and down between the two inner guide rails on the left and right sides Action or release action, when the curtain moves up and down between the two inner guide rails, the convex strips of each of the curtain edge bands can freely move left and right in the hollow groove of each inner guide rail but will not The slits of the inner guide rails escape from the hollow grooves of the inner guide rails, which effectively solves the problem of complex structure and difficult disassembly of the existing blind assembly device.

Description

Roll-up blind device

The invention relates to a blind device, especially a retractable blind device.

In the field of shades, the shade installed at the window of the building structure (such as a wall) is basically composed of a shade body (including shaft tubes, curtains and other known shade-related structures) and a guide rail combination (such as inner , Outer guide rails and other conventional curtain-related structures) are combined into one body, usually the guide rail combination system is first installed on the building structure (such as a wall), and then the blind body is installed. In recent years, in order to speed up the design of assembly, as shown in patents EP3130741A4, JP2015203186A, WO2015156222A1 or US2017037682A1, the blind body and the guide rail assembly are combined through a snap-on assembly device (blind device).

However, referring to the representative drawing of the patent JP2015203186A, the structure of the combined device that combines the blind body and the guide rail in the conventional patent is not only complicated but also difficult to disassemble. Therefore, the known buckle-type combined device structure still has Improve the shortcomings.

From the above, it can be seen that a retractable blind device with a simplified structure, easy assembly and disassembly, and easy maintenance or renewal is currently eagerly awaited by related industries.

The main purpose of the present invention is to provide a retractable blind device, wherein when a blind body and two inner guide rails are assembled, a curtain is passed by a convex strip on each of the two curtain sidebands. Set respectively in one of the hollow grooves of the inner guide rails, and make each of the cord sidebands pass through each of the A slit in the inner guide rail, so that the curtain can be retracted or released up and down between the two inner guide rails on the left and right sides, when the curtain moves up and down between the two inner guide rails At this time, the protruding strips of each of the cord sidebands can freely move left and right in the hollow grooves of each of the inner guide rails, but will not come out from the slits of each of the inner guide rails and leave the inner guide rails of each The hollow groove effectively solves the problem that the structure of the existing blind assembly device is complex and difficult to disassemble.

In order to achieve the above object, the present invention provides a retractable blind device, which is used to be installed on the outer frame of a door and window to prevent the outdoor light of the door and window from entering the room through the gap between the door, window and the blind. The retractable shade device includes a shade body, two curtain edge bands, two inner guide rails and two outer guide rails; the shade body includes a shaft tube, a curtain, a lower rail and two sprocket seats, wherein the upper end of the It is horizontally fixed on the outer peripheral edge of the shaft tube so that the curtain can be rolled up on the outer peripheral edge of the shaft tube, wherein the lower rail is horizontally fixed on the lower end of the cord, and each of the sprocket seats is They are respectively installed on the left and right sides of the upper edge of the outer frame of the door and window and correspondingly located on the two ends of the shaft tube, so that the shaft tube can rotate in the forward and reverse directions between the two sprocket seats for retracting or releasing The cord; each of the cord side bands is symmetrically connected to the left and right edges of the cord, wherein a convex strip is provided on one side of each of the cord side bands, so that the left and right sides of the cord have respectively The convex strip; each inner guide rail is respectively symmetrically arranged on the left and right edges of the blind body, wherein each inner guide rail is provided with a hollow groove on the transverse section, and a ring wall of each hollow groove is provided with There is a slit, so that the protruding strips of each cord edge can be movably set in each of the hollow grooves up and down, and each of the cord edges can pass through and move up and down in each of the slits. activities, in which two elastic fins extending outward are symmetrically arranged on the ring wall surface of each hollow groove and on both sides of each slit, and the open ends of each elastic fin are inclined outward at an angle Expand and deviate from the ring wall of each hollow groove; each of the outer guide rails is installed on the left and right sides of the outer frame of the door and window, that is, at the two left and right edges of the blind body, and the transverse section of each of the outer guide rails An opening groove is arranged on the surface, and each opening groove is formed with a first opening, and two retaining parts respectively protruding toward the space of each opening groove are symmetrically provided on the inner side walls of each of the first openings, so that A second opening is formed between the two stoppers; wherein when the shade body and the inner guide rails are assembled, the curtain is respectively sleeved on each of the curtain side strips by the convex strips In the hollow groove of the inner guide rail, and each of the curtain edge bands can pass through the slit of each of the inner guide rails, so that the curtain can be rolled up and down between the two inner guide rails on the left and right sides retracting action or releasing action, wherein when the cord moves up and down between the two inner guide rails, the convex strips of each cord sideband can freely move left and right in the hollow groove of each inner guide rail but It will not escape from the slit of each inner guide rail and leave the hollow groove of each inner guide rail, so that there will be no gap between the curtain and each inner guide rail to prevent the outdoor light of the door and window from entering the room; wherein When each of the inner guide rails and each of the outer guide rails is assembled, each of the inner guide rails is pressed into each of the opening grooves through the first opening and the second opening of each of the outer guide rails with an allowable margin. , and can freely move left and right, and at this time, each of the elastic fins also forms an outwardly expanded state by its own elasticity, wherein when each of the inner rails moves left and right in the open groove of each of the outer rails At the same time, the open ends of the elastic fins of the inner guide rails can be elastically resisted on the stoppers correspondingly, so that the inner guide rails can be kept in the open slots to freely move left and right but not will be separated from the opening slots; when the inner guide rails and the outer guide rails need to be disassembled, the outer guide rails must remain still, and then the inner guide rails and the outer guide rails will be assembled in reverse. That is to say, each inner guide rail can be taken out from the opening groove of the outer guide rail, and the detachment operation of each inner guide rail and each outer guide rail can be completed, so as to simplify the structure and facilitate assembly and disassembly or easy maintenance or renewal.

In a preferred embodiment of the present invention, a motor is further provided inside the shaft tube of the blind body, and the rotation of the motor drives the shaft tube to rotate in the forward and reverse directions between the two sprocket seats for use. to retract or release the curtain.

In a preferred embodiment of the present invention, a chain is further provided on the sprocket seat of the shade body, and the chain is connected with the shaft tube, and the shaft tube can be moved between the two shaft tubes by pulling the chain. The positive and negative rotation between the sprocket seats is used to take up or release the curtain.

In a preferred embodiment of the present invention, the left and right ends of the lower rail of the blind body each have a stabilizer, wherein after each of the inner guide rails and each of the outer guide rails are assembled, the left and right ends of the lower rail The ends are respectively positioned between the first opening and the second opening of the outer guide rails to move up and down. At this time, each of the stabilizers is positioned between the slits of the inner guide rails to move up and down. Activity.

In a preferred embodiment of the present invention, the shaft tube of the blind body is a double-tube aluminum extruded structure with an inner tube and an outer tube.

In a preferred embodiment of the present invention, the left and right ends of the shaft tube are further formed with an inner tube exposed section. When the curtain is rolled up on the outer peripheral edge of the shaft tube, each of the inner tube exposed sections is To make the protruding strips of the cord edge bands on the left and right ends of the cord can be stacked in multiple layers in the exposed sections of the inner tubes.

In a preferred embodiment of the present invention, the shade body further includes two exposed sections of the inner tube, and each exposed section of the inner tube is a socket type structure; The exposed section of the inner tube, when the curtain is rolled up on the outer peripheral edge of the shaft tube, each exposed section of the inner tube is used to make the convex strips of the curtain edge bands at the left and right ends of the curtain be able to In each of the exposed segments of the inner tube a multilayer stack is performed.

In a preferred embodiment of the present invention, each of the side strips is further a zipper tape structure, so that the zipper of each zipper tape structure is regarded as each of the convex strips.

In a preferred embodiment of the present invention, each of the elastic fins provided on each of the inner guide rails is an integrally formed body with each of the inner guide rails.

In a preferred embodiment of the present invention, each of the elastic fins provided on each of the inner guide rails is a two-piece molded body with each of the inner guide rails, wherein the molded bodies of each of the elastic fins are connected and combined Each of the inner guide rails to form a whole.

In a preferred embodiment of the present invention, each of the outer guide rails is installed and embedded in the interior of the building structure on the left and right sides of the outer frame of the door and window, or installed in the building structure on the left and right sides of the outer frame of the door and window of the exterior.

1: Retractable blind device

10: Curtain body

11: shaft tube

12: Curtain

13: Lower rail

14: sprocket seat

15: Motor

16: chain

17: Stabilizer

18: Inner tube exposed section

20: Curtain side belt

21: Convex strip

30: Inner rail

31: hollow groove

32: Slit

33: elastic fins

34: Open end

40: outer rail

41: Open slot

42: First opening

43: Blocking part

44: second opening

2: doors and windows

201: outer frame

3: Housing structure

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a schematic exploded view of FIG. 1 .

FIG. 3 is a combined schematic diagram of FIG. 2 .

Fig. 4 is an exploded schematic diagram of the inner guide rail and the outer guide rail in the present invention.

Fig. 5 is a planar combined schematic view of an embodiment of the inner guide rail and the outer guide rail of the present invention.

Fig. 6 is a schematic diagram of the convex strip in Fig. 5 moving left and right in the hollow groove.

Fig. 7 is a schematic diagram of the movement of the inner guide rail in Fig. 5 towards the main body of the lotus.

Fig. 8 is a plan view combination diagram of another embodiment of the inner guide rail and the outer guide rail of the present invention (the elastic fins provided on the inner guide rail are two-piece moldings with the inner guide rail).

Fig. 9 is a plan view combination diagram of another embodiment of the inner guide rail and the outer guide rail of the present invention (the elastic fins provided on the inner guide rail are integrally formed with the inner guide rail).

Fig. 10 is a schematic perspective view of the combination of the cord edge band and the exposed section of the inner tube of the present invention.

FIG. 11 is a partially enlarged schematic diagram of a side view of FIG. 10 .

Fig. 12 is a partially enlarged schematic side view of the shaft tube of the present invention.

Fig. 13 is a schematic plan view of the inside of the building structure where the outer guide rail of the present invention is installed and embedded in the left and right sides of the outer frame of the door and window.

Fig. 14 is a schematic plan view of the outside of the building structure where the outer guide rails are installed on the left and right sides of the outer frames of the doors and windows.

Fig. 15 is an exploded schematic plan view of another embodiment of the present invention (the exposed section of the inner tube is a socket type structure).

In conjunction with the drawings, the structure and technical features of the present invention are described in detail below, wherein each diagram is only used to illustrate the structural relationship and related functions of the present invention, so the dimensions of each component in each diagram are not drawn according to the actual scale And it is not intended to limit the present invention.

13 and 14, the present invention provides a retractable blind device 1, the retractable blind device 1 has a front and rear (as shown in the direction of the arrow B in Figure 1), left and right (as shown in Figure 1 As shown in the direction of the arrow C) and up and down (as shown in the direction of the arrow A in Figure 1), the retractable blind device 1 is used to be installed on the outer frame 201 of a door and window 2 to prevent the door and window 2 outside (as shown in the rear direction of the arrow B direction in Figure 1) light enters the room from the gap between the door and window 2 and the blind (as shown in the front direction of the arrow B direction in Figure 1); The retractable blind device 1 includes a blind body 10 , two side strips 20 , two inner guide rails 30 and two outer guide rails 40 as shown in FIGS. 1 to 3 .

The shade body 10 comprises a shaft tube 11, a curtain 12, a lower rail 13 and two sprocket seats 14 as shown in Figure 1; wherein the upper end of the curtain 12 is horizontally fixed on the outer periphery of the shaft tube 11 so that The curtain 12 can be rolled up on the outer periphery of the shaft tube 11 as shown in Figure 12; wherein the lower rail 13 is horizontally fixed on the lower end of the curtain 12 as shown in Figure 1; wherein each of the sprocket seats 14 It is respectively installed on the left and right sides of the upper edge of the outer frame 201 of the door and window 2 and correspondingly located on the two ends of the shaft tube 11 as shown in Figures 13 and 14, so that the shaft tube 11 can be positioned on the two sprocket seats 14 Rotate in forward and reverse directions for winding or releasing the curtain 12.

Each of the cord side bands 20 is symmetrically connected to the left and right edges of the cord 12 as shown in Figures 1 to 3, wherein one side of each of the cord side bands 20 is provided with a convex strip 21, the cord 12 There are respectively the convex strips 21 on the left and right edges of the front panel as shown in FIGS. 1 and 10 .

Wherein, each of the cord edge strips 20 is further a zipper tape structure, but not limited, so that the zipper of the zipper tape structure is regarded as each of the convex strips 21 .

Each of the inner guide rails 30 is symmetrically arranged on the left and right edges of the blind body 10 as shown in FIGS. One of the ring walls of the groove 31 is provided with a slit 32 as shown in Figures 4 and 5, so that the protruding strips 21 of each of the cord sidebands 20 can be movably sleeved in each of the hollow grooves 31 up and down. 5 to 9, and each of the cord sidebands 20 can pass through and move up and down in each of the slits 32 (shown in the direction of arrow A in Figure 1); Two elastic fins 33 extending outwards are symmetrically arranged on the wall surface and located on both sides of each of the slits 32, as shown in FIGS. The ring wall surfaces of the hollow grooves 31 that are spread out and deviate from each other are shown in FIGS. 5 to 9 .

Each of the outer guide rails 40 is installed on the left and right sides of the outer frame 201 of the door and window 2 as shown in Figures 13 and 14, that is, at the two edges of the blind body 10 in the left and right directions. An opening groove 41 is provided on the top, and each opening groove 41 is formed with a first opening 42, and two inner sidewall surfaces inside each of the first opening 42 are symmetrically provided with two baffles protruding toward each opening groove 41 space respectively. The locking portion 43 forms a second opening 44 between the two blocking portions 43 as shown in FIGS. 5 to 9 .

When the blind body 10 is assembled with the inner guide rails 30, the curtain fabric 12 is sleeved on the inner guide rails 30 from top to bottom by the convex strips 21 of the curtain edge bands 20. In the hollow groove 31, but not limited to, as shown in FIG. 1, and the slit 32 that allows each of the cord sidebands 20 to pass through each of the inner guide rails 30 is shown in FIGS. 5 to 9, thereby enabling the cord 12 to Between the two inner guide rails 30 on both sides of the left and right (as shown in the arrow C direction in Figure 1 ), carry out up and down (as shown in the arrow A direction in Figure 1 ) retracting action or release action; The curtain 12 moves up and down between the two inner guide rails 30 (as shown by arrow A in Fig. 1 ). direction) during action, the protruding strips 21 of each of the cord sidebands 20 can freely move left and right (as shown in the direction of arrow C in Figure 1 ) in the hollow grooves 31 of each of the inner guide rails 30, but The hollow groove 31 of each inner guide rail 30 will not escape from the slit 32 of each inner guide rail 30 as shown in Figures 5 to 9, so that the curtain 12 can move up and down more smoothly (As shown in the direction of arrow A in Figure 1), and thereby make no gap between the curtain 12 and each of the inner guide rails 30 to prevent the door and window 2 from going outside (the rear direction of the direction of arrow B in Figure 1) As shown) the light enters the room (as shown in the front direction of the arrow B direction in Figure 1), so as to improve the market competitiveness of the product.

When each of the inner guide rails 30 and each of the outer guide rails 40 are assembled, each of the inner guide rails 30 is pressed into and passes through the first opening 42 and the second opening 44 of each of the outer guide rails 40 with an allowable margin. Enter each of the opening grooves 41 as shown in Figures 5 to 9, and can freely move left and right (as shown in the direction of arrow C in Figure 1), and at this time, each of the elastic fins 33 is also supported by its own elasticity. And form outward expansion state as shown in Fig. 5 to 9; Wherein when each said inner guide rail 30 carries out left and right (as shown in the arrow C direction among Fig. 1) activities in this opening groove 41 of each said outer guide rail 40 The open ends 34 of the elastic fins 33 of the inner guide rails 30 can be elastically pressed against each of the stoppers 43 as shown in FIGS. The open slots 41 are free to move left and right (shown in the arrow C direction in Figure 1 ) but will not break away from each of the open slots 41, so that the curtain 12 can move up and down between the two inner guide rails 30 ( As shown in the direction of the arrow A in Figure 1), it remains stable and smooth without being stuck during the retracting or releasing motion.

When each of the inner guide rails 30 and each of the outer guide rails 40 needs to be disassembled, each of the outer guide rails 40 must remain motionless, and then reversely carry out the assembly operation of the inner guide rails 30 and each of the outer guide rails 40. Take out each of the inner guide rails 30 in the opening slot 41 of the outer guide rail 40 as shown in Figure 4, and complete the detachment operation of each of the inner guide rails 30 and each of the outer guide rails 40, so that the user can easily carry out with tools. The act of dismantling.

Referring to FIG. 1 , the inside of the shaft tube 11 of the shade body 10 is further provided with a motor 15 but not limited thereto, and the rotation of the motor 15 drives the shaft tube 11 to move forward and backward between the two sprocket seats 14 square The rotation is used to roll up or release the curtain 12, and the user can easily operate the roll-up or release of the curtain 12 through the remote controller, so as to provide users with a better product experience.

Referring to Fig. 1, a chain 16 is further provided on the sprocket seat 14 of the shade body 10 but not limited, and the chain 16 is connected with the shaft tube 11, and the shaft tube 11 is pulled by the chain 16 The two sprocket seats 14 can be rotated in forward and reverse directions for winding or releasing the curtain 12, so that when the motor 15 fails, the work of winding or releasing the curtain 12 can still be carried out.

1 and 10, the left and right ends of the lower rail 13 of the shade body 10 each have a stabilizer 17 but not limited thereto, wherein when the inner rails 30 and the outer rails 40 are assembled, the lower rails The left and right ends of 13 are respectively positioned between the first opening 42 and the second opening 44 of each outer guide rail 40 to move up and down (as shown in the direction of arrow A in Figure 1 ). The stabilizer 17 is positioned between the slits 32 of the inner guide rails 30 to move up and down, so that the curtain 12 moves up and down between the two inner guide rails 30 (arrow A in Fig. 1 ). Direction shown) remain stable during the retracting action or the releasing action.

Referring to Figure 12; the shaft tube 11 of the blind body 10 is a double-tube aluminum extruded structure with an inner tube and an outer tube, but not limited, so as to facilitate mass and rapid manufacturing at the manufacturing end and save costs, and the product The material is light and has corrosion resistance to prolong the service life of the product.

Referring to Figures 1 to 3 and 11; the left and right ends of the shaft tube 11 are further formed with an inner tube exposed section 18, but not limited, when the curtain 12 is rolled up on the outer periphery of the shaft tube 11, each inner tube The tube exposed section 18 is used to enable the protruding strips 21 of the curtain edge bands 20 provided at the left and right ends of the cord 12 to be stacked in multiple layers in each of the inner tube exposed sections 18 without irregular stacking. To facilitate the curtain 12 to keep stable and smooth without being stuck when performing up-down (as shown in the direction of arrow A in FIG. 1 ) retracting or releasing motion between the two inner guide rails 30 .

In addition, referring to FIG. 15 , each exposed section 18 of the inner tube can be a socket-type structure, but not limited thereto. end, in order to facilitate more diversified design of products and increase the market competitiveness of products.

Referring to FIG. 9 , each of the elastic fins 33 provided on each of the inner guide rails 30 is a one-piece integrated body with each of the inner guide rails 30 , but not limited, so as to facilitate mass and rapid manufacturing at the manufacturing end and save costs.

With reference to Fig. 8, each of the elastic fins 33 provided on each of the inner guide rails 30 is a two-piece molded body with each of the inner guide rails 30, but not limited, wherein the molded bodies of each of the elastic fins 33 are connected and combined Each of the inner guide rails 30 is integrally formed to facilitate partial parts replacement when each of the elastic fins 33 is damaged.

Referring to Figures 13 and 14, the outer guide rail 40 is installed and embedded in the inside of the building structure 3 on the left and right sides of the outer frame 201 of the door and window 2 (as shown in Figure 13), or installed on the outer frame of the door and window 2 The exterior of the house structure 3 on the left and right sides of 201 (as shown in Figure 14) is not limited, so it can be matched and installed on more different types of doors and windows, or the aesthetic needs of different users, so as to increase the market of the product Competitiveness.

As can be seen from the above, when the blind body 10 of the present invention is assembled with each of the inner guide rails 30, the curtain fabric 12 is respectively sleeved on each of the inner guide rails by the convex strips 21 of each of the curtain edge bands 20 30 in the hollow groove 31, and make each of the curtain edge strips 20 pass through the slit 32 of each of the inner guide rails 30, so that the cord 12 can be positioned between the two inner guide rails 30 on the left and right sides. When the curtain 12 moves up and down between the two inner guide rails 30, the convex strip 21 of each curtain edge band 20 can be on the inner guide rail 30. The hollow grooves 31 can freely move left and right but will not come out from the slits 32 of the inner guide rails 30 and leave the hollow grooves 31 of the inner guide rails 30, so that the retractable blind device 1 of the present invention Compared with the known blind device (such as the combined device structure of the blind), it has the following advantages:

(1), the retractable blind device 1 of the present invention can quickly carry out the operation of loading and unloading the blinds. When used in facilities (such as restaurants) that require a large number of blinds, it can speed up the operation of each group of blinds. The progress of the assembly and construction work of the device will help reduce the cost of blind installation.

(2) The retractable blind device 1 of the present invention is not only capable of quickly loading and unloading the blind, but also has a structure that can be easily assembled and disassembled. In the future, if some parts of the retractable blind device 1 are damaged For example, to update the curtain 12, only some parts need to be replaced. If the outer guide rail 40 must remain still, each inner guide rail 30 can be taken out from the opening groove 41 of the outer guide rail 40, and each inner guide rail 30 can be completed. The detachment operation of the guide rail 30 and each of the outer guide rails 40 does not need to replace the entire set of blinds, which is conducive to reducing product maintenance costs for users (such as restaurants).

The above are only preferred embodiments of the present invention, and are only illustrative of the present invention, rather than restrictive; those of ordinary skill in the art understand that they can be modified within the spirit and scope defined by the claims of the present invention. Many changes, modifications, and even equivalent changes will fall within the protection scope of the present invention.

1: Retractable blind device

10: Curtain body

11: shaft tube

12: Curtain

13: Lower rail

14: sprocket seat

15: Motor

16: chain

17: Stabilizer

18: Inner tube exposed section

20: Curtain side belt

21: Convex strip

30: Inner rail

31: hollow groove

32: Slit

33: elastic fins

40: outer rail

41: Open slot

42: First opening

Claims (11)

A retractable blind device is used to be installed on the outer frame of a door and window to prevent the outdoor light of the door and window from entering the room through the gap between the door, window and the blind, which includes: A shade body, which includes a shaft tube, a curtain, a lower rail and two sprocket seats; wherein the upper end of the curtain is horizontally fixed on the outer peripheral edge of the shaft tube so that the curtain can be rolled up on the shaft tube on the outer periphery; wherein the lower rail is horizontally fixed on the lower end of the curtain; wherein each of the sprocket seats is respectively installed on the left and right sides of the upper edge of the outer frame of the door and window and is correspondingly located at both ends of the shaft tube , so that the shaft tube can be rotated in the forward and reverse directions between the two sprocket seats for winding or releasing the curtain; The two cord side bands are respectively symmetrically connected to the left and right edges of the cord, wherein one side of each of the cord side bands is provided with a convex strip, so that the left and right edges of the cord have the protrusions respectively. Strip; Two inner guide rails are symmetrically arranged on the left and right edges of the blind body respectively, wherein each inner guide rail is provided with a hollow groove on the transverse section, and each hollow groove is provided with a slit on the ring wall surface, The protruding strips of each of the curtain sidebands can be movably set in each of the hollow grooves up and down, and each of the curtain sidebands can pass through and move up and down in each of the slits; Two elastic fins respectively extending outward are symmetrically arranged on the ring wall surface of each hollow groove and located on both sides of each of the slits, and the open ends of each elastic fin are spread out at an inclined angle and deviate from each the annular wall of the hollow groove; and Two outer guide rails, each installed on the left and right sides of the outer frame of the door and window, that is, the two edges of the blind body in the left and right directions, wherein each of the outer guide rails is provided with an open slot on the transverse section, and each of the open slots forms A first opening is provided, and two stoppers protruding toward the space of each opening groove are symmetrically arranged on the two inner wall surfaces inside each first opening, so that a second opening is formed between the two stoppers ; Wherein, when the blind body and the inner guide rails are assembled, the cords are respectively sleeved in the hollow grooves of the inner guide rails by the protruding strips of the cord edge bands, and each cord The side belt can pass through the slit of each inner guide rail, so that the curtain can be retracted or released up and down between the two inner guide rails located on the left and right sides; When the inner guide rails move up and down, the protruding strips of the cord edge bands can freely move left and right in the hollow grooves of the inner guide rails but will not come out from the slits of the inner guide rails And leave the hollow groove of each of the inner guide rails, so that there will be no gap between the curtain and each of the inner guide rails to prevent the outdoor light of the door and window from entering the room; Wherein when each of the inner guide rails and each of the outer guide rails is assembled, each of the inner guide rails is pressed into each of the opening grooves through the first opening and the second opening of each of the outer guide rails with an allowable margin. inside, and can freely move left and right, and at this time, each of the elastic fins also forms an outwardly expanded state by its own elasticity; When moving, the open ends of the elastic fins of the inner guide rails can elastically resist the stoppers correspondingly, so that the inner guide rails can be kept in the open slots to freely move left and right. will not disengage from the opening slots; Wherein, when each of the inner guide rails and each of the outer guide rails needs to be disassembled, each of the outer guide rails must be kept still, and then the assembly operation of the inner guide rails and each of the outer guide rails is performed in reverse, that is, the outer guide rails can be separated. Each of the inner guide rails is taken out in the opening groove, and the detachment operation of each of the inner guide rails and each of the outer guide rails is completed. The retractable blind device as described in claim 1, wherein the inside of the shaft tube of the blind body is further provided with a motor, and the shaft tube can be driven between the two sprocket seats by the rotation of the motor Forward and reverse rotation is used to wind up or release the curtain. The retractable blind device as described in claim 1, wherein the sprocket seat of the blind body is further provided with a chain, and the chain is connected with the shaft tube, and the shaft is pulled by the chain The tube can be rotated forward and reverse between the two sprocket seats for winding up or releasing the curtain. The retractable blind device as described in Claim 1, wherein the left and right ends of the lower rail of the blind main body each have a stabilizer, wherein after the inner guide rails and the outer guide rails are assembled, the lower rails The left and right ends of the rail are respectively positioned between the first opening and the second opening of each outer guide rail to move up and down. At this time, each of the stabilizers is positioned between the slits of each of the inner guide rails. time for up and down activities. The retractable blind device according to claim 1, wherein the shaft tube of the blind body is a double-tube aluminum extruded structure with an inner tube and an outer tube. The retractable blind device as described in Claim 5, wherein the left and right ends of the shaft tube are further formed with an exposed section of the inner tube, when the curtain is rolled up on the outer periphery of the shaft tube, each of the inner tubes The exposed section of the tube is used to enable the protruding strips of the side bands of the curtain at the left and right ends of the curtain to be stacked in multiple layers in the exposed section of the inner tube. The retractable blind device as described in claim 5, wherein the blind body further includes two exposed sections of inner tubes, each exposed section of the inner tube is a socket type structure; wherein the left and right ends of the shaft tube Further respectively sleeve the exposed sections of the inner tubes. When the curtain is rolled up on the outer periphery of the shaft tube, the exposed sections of the inner tubes are used to make the sidebands of the curtains on the left and right ends of the curtain. The protruding strips can be stacked in multiple layers in each exposed section of the inner tube. The retractable blind device as described in claim 1, wherein each of the curtain side strips is further a zipper tape structure, so that the zipper of each zipper tape structure is used as each of the convex strips. The retractable blind device as described in Claim 1, wherein each of the elastic fins provided on each of the inner guide rails is a one-piece integral molding with each of the inner guide rails. The retractable blind device as described in Claim 1, wherein each of the elastic fins provided on each of the inner guide rails is a two-piece molded body with each of the inner guide rails, wherein the molding of each of the elastic fins The body is connected and combined on each of the inner guide rails to form a whole. The retractable blind device as described in Claim 1, wherein each of the outer guide rails is installed and embedded in the interior of the building structure on the left and right sides of the outer frame of the door and window, or installed on the left and right sides of the outer frame of the door and window The exterior of the Edge House structure.

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