Dimmable Roman blinds (Part 2)

Abstract

A dimming Roman blind (II) includes: an upper rail, which has a first rope roller and a second rope roller inside. The first rope roller controls a first rope body, and the second rope roller controls a second rope body. The first and second rope rollers are operated and controlled by a first pull rope and a second pull rope, respectively; a lower rail, which is movably and vertically disposed below the upper rail; and a Roman blind body, which is assembled between the upper rail and the lower rail. The Roman blind body has an upper dimming curtain and a lower dimming curtain. An upper braking unit is provided at the junction of the upper and lower dimming curtains. The upper braking unit is connected to the first rope body. A lower braking unit is provided on the lower half of the lower dimming curtain. The lower braking unit is connected to the second rope body. This completes a dimming Roman blind with two-stage operation control effect.

Description

Technical Field

[0001] This invention relates to a curtain structure, and more particularly to a two-section dimming Roman blind (II). Prior Technology

[0002] Curtains are a common home appliance. Generally speaking, the purpose of curtains is not only to block sunlight, but also to provide necessary privacy, or even to serve a decorative function. Currently, there are many types of curtains on the market, such as fabric curtains, roller blinds, Roman blinds, Venetian blinds, and honeycomb blinds. The well-known Roman blind consists of a single layer of fabric and ropes. Multiple strips are evenly spaced through the fabric, dividing it into sections. The ropes are threaded between these strips to control the fabric, allowing it to be opened and closed. However, Roman blinds are only a single layer. When the user rolls up the curtain to let in light, it cannot prevent others from peeking into the room. Conversely, when the user opens and closes the curtain to block out light, it prevents outdoor light from entering, causing inconvenience.

[0003] In view of this, based on the inventor's many years of experience in manufacturing, developing and designing related products, and after detailed design and careful evaluation for the above objectives, the inventor has finally obtained an invention that is truly practical. Summary of the Invention

[0004] The technical problem this invention aims to solve is to address the aforementioned deficiencies in the existing technology by providing a dimming Roman blind (II), comprising: an upper rail, internally equipped with at least one first rope winder and at least one second rope winder, wherein the first rope winder winds and unwinds a first rope, and the second rope winder winds and unwinds a second rope, and the first and second rope winders are respectively operated and controlled by a first puller and a second puller; a lower rail, movably and vertically disposed below the upper rail; and a Roman blind body, assembled between the upper rail and the lower rail, the Roman blind body having... An upper dimming curtain and a lower dimming curtain, both with different dimming effects and connected to each other, are provided. The top of the upper dimming curtain is fixed to the upper rail, and the bottom of the lower dimming curtain is fixed to the lower rail. Both the upper and lower dimming curtains are provided with a plurality of horizontal strips equidistantly arranged from top to bottom. Each of the horizontal strips arranged on the upper dimming curtain and staggered is provided with at least one first buckle and at least one second buckle. Each of the horizontal strips arranged on the lower dimming curtain and staggered is provided with at least one third buckle. The third buckle is aligned with the second buckle. An upper braking unit is provided, having an upper braking... The upper braking horizontal bar comprises at least one first rope fastener, at least one fourth buckle, and a counterweight. The upper braking horizontal bar is positioned at the junction of the upper and lower dimming curtains. The first rope fastener is mounted on the upper braking horizontal bar and aligned with the first buckle of the horizontal bar. The first rope system sequentially passes through the first buckle and connects to the first rope fastener, thereby using the first rope to drive the upper braking unit to raise and lower, achieving the unfolding and retraction of the upper dimming curtain. The fourth buckle is mounted on the upper braking horizontal bar and aligned with the second and third buckles of the horizontal bar. The counterweight is secured at both ends by two... The fastener is parallel to the upper braking horizontal bar; the lower braking unit has a lower braking horizontal bar and at least one second rope fastener. The lower braking horizontal bar is assembled between the last horizontal bar of the lower dimming curtain and the lower rail. The second rope fastener is assembled on the lower braking horizontal bar and aligned with the second, fourth, and third buckles of the horizontal bar. The second rope passes through the second, fourth, and third buckles in sequence and is connected to the second rope fastener, thereby using the second rope to drive the lower braking unit to rise and fall to achieve the unfolding and closing of the lower dimming curtain.

[0005] Preferably, the upper light-adjusting curtain and the lower light-adjusting curtain provide light transmission and light blocking effects, respectively.

[0006] Preferably, the horizontal strip is a hollow strip with a C-shaped cross-section, and an opening is formed axially on the wall of the horizontal strip. The diameter of the opening is smaller than the inner diameter of the horizontal strip. Each horizontal strip is fitted with a pressure strip, the outer diameter of which is larger than the opening diameter of the horizontal strip. The Roman blind is pressed tightly into the horizontal strip through the pressure strip. The two ends of the horizontal strip are fixed by a two-tube plug assembly, further restricting the pressure strip to the horizontal strip. The first, second, and third buckles each have a C-shaped buckle portion and can be displaced and snapped onto the outer wall of the horizontal strip. The outer walls of the first, second, and third buckles each protrude to form a through-hole portion, providing corresponding first and second ropes for passage.

[0007] Preferably, a positioning rib is provided on the outer wall of the horizontal strip along the axial direction, and a positioning groove is provided on the inner wall of the C-shaped buckle of the first buckle, the second buckle and the third buckle. The positioning groove engages with the positioning rib to prevent the first buckle, the second buckle and the third buckle from rotating on the outer wall of the horizontal strip.

[0008] Preferably, both the upper and lower brake horizontal bars are hollow strips with a C-shaped cross-section, and each has an opening along the axial direction on its wall surface. The diameter of the opening is smaller than the inner diameter of the upper and lower brake horizontal bars. Each of the upper and lower brake horizontal bars is fitted with a pressure strip, the outer diameter of which is larger than the opening diameter of the upper and lower brake horizontal bars. The Roman curtain body is pressed tightly into the upper and lower brake horizontal bars through the pressure strip. Both ends of the upper and lower brake horizontal bars are fixed by a two-tube plug assembly, further confining the pressure strip within the upper and lower brake horizontal bars. The fourth buckle has a C-shaped buckle portion and can be displaced to snap onto the outer wall of the upper brake horizontal bar. The outer wall of the fourth buckle is also formed with a through hole, which allows the second rope to pass through.

[0009] Preferably, the outer walls of both the upper and lower brake horizontal bars are provided with a limiting rib along the axial direction, and the inner wall of the C-shaped buckle of the fourth buckle is provided with a positioning groove. The positioning groove is engaged and positioned with the limiting rib of the upper brake horizontal bar, thereby preventing the fourth buckle from rotating on the outer wall of the upper brake horizontal bar.

[0010] Preferably, both the first and second rope fasteners include a grooved tube and a rope winding shaft. The grooved tube has a rope winding groove formed by its two ends extending through it, and a through hole communicating with the rope winding groove is provided on the outer surface of the grooved tube. The outer surface of the grooved tube also has a C-shaped combination buckle. The inner wall of the combination buckle has a positioning groove that engages with the limiting ribs on the outer walls of the upper and lower brake horizontal bars for positioning. The rope winding shaft is axially inserted into the rope winding groove, and one end of the rope winding shaft has a limiting... The cone-shaped part protrudes from one end of the grooved tube and is positioned against it. The other end of the rope winding shaft has a twisting part that is tightly fitted into the other end of the grooved tube. A tool hole is provided on the outer end face of the twisting part. The outer diameter of the rope winding shaft is smaller than the inner diameter of the rope groove, thereby providing a way for the first rope and the second rope to pass through the through hole in the grooved tube and connect to the rope winding shaft. The rope winding shaft is used to wind and unwind the first and second ropes in the rope groove, further achieving the purpose of horizontal adjustment of the upper and lower braking level bars.

[0011] Preferably, the limiting cone of the rope winding shaft has an axial groove at its end, and the groove extends to the front end of the rope winding shaft to form a rope-hooking groove, thereby using the rope-hooking groove to achieve the connection and fixation of the first rope body and one end of the second rope body.

[0012] Preferably, the lower rail has a groove along the axial direction and an opening at the top of the groove. The groove provides a shaft for a rod to pass through. The shaft has a snap-fit ​​groove along the axial direction. The bottom end of the downlight-adjusting curtain has a fixing piece that is embedded in the snap-fit ​​groove of the shaft. Then, the downlight-adjusting curtain is rolled around the shaft and passed through the groove along the axial direction. Furthermore, a cover plate is fixed at each of the left and right ends of the lower rail to restrict the shaft within the groove.

[0013] Preferably, the upper rail may be further provided with a linkage device and a clutch device. The linkage device is installed between the first rope winder and the second rope winder so that the first and second rope winders can achieve synchronous rope winding action through the linkage device. The clutch device is installed on the first rope puller to provide the first rope puller and the first rope winder with disengagement action.

[0014] Compared with prior art, the Roman blind of the present invention has an upper dimming curtain and a lower dimming curtain with different dimming effects. The upper braking unit is installed at the junction of the upper and lower dimming curtains. The upper braking unit can be driven to rise and fall by the cooperation of the first rope of the first winding device and the first puller, so as to achieve the closing and unfolding of the upper dimming curtain. The lower braking unit is installed above the lower rail of the lower dimming curtain. The lower braking unit can be driven to rise and fall by the cooperation of the second rope of the second winding device and the second puller, so as to achieve the closing and unfolding of the lower dimming curtain. This gives the Roman blind a two-stage operation control effect, thereby allowing users to adjust the amount of light entering while taking into account the indoor privacy effect, greatly improving the practicality of dimming Roman blinds, and thus increasing consumers' willingness to purchase.

[0015] Furthermore, the upper braking horizontal bar of the upper braking unit and the lower braking horizontal bar of the lower braking unit are installed on the Roman blind in the same configuration as the horizontal bar system. When the Roman blind is unfolded, the front view of the curtain not only has a sense of unity, but also makes the curtain flatter when unfolded. In addition, when the Roman blind is closed, the curtain can fall and fold neatly in the same direction, ensuring the stability of the curtain when closed and also having an aesthetic effect. Simple Explanation of the Diagram

[0016]

[0017] [Figure 1] is a front perspective view of the present invention and a schematic diagram of its folded state.

[0018] [Figure 2] is a perspective view of the back of the present invention and a schematic diagram of its folded state.

[0019] [Figure 3] is an exploded view of the upper rail and the Roman curtain body of the present invention.

[0020] Figure 4 is a partial exploded view of the Roman curtain body and the horizontal strip of the present invention.

[0021] Figure 5 is a partial exploded view of the braking unit of the present invention.

[0022] Figure 6 is a partial exploded view of the lower dimming curtain, the second rope fastener, and the lower rail of the present invention.

[0023] Figure 7 is a schematic diagram showing that the first or second rope fastener of the present invention is not parallel.

[0024] [Figure 8] is a schematic diagram of the parallel adjustment of the first or second rope fastener of the present invention.

[0025] [Figure 9] is a cross-sectional view of the upper and lower light-adjusting curtains of the present invention in a retracted state, and a partially enlarged cross-sectional view of the lower rail.

[0026] [Figure 10] is a schematic diagram showing that both the upper and lower light-adjusting curtains of the present invention are in a retracted state.

[0027] Figure 11 is a schematic diagram of the present invention controlling the unfolding of the downlight curtain via a second pull rope device.

[0028] [Figure 12] is a cross-sectional view of the light-blocking curtain of the present invention when it is unfolded.

[0029] [Figure 13] is a perspective view of the back of the light-blocking curtain of the present invention when it is unfolded.

[0030] [Figure 14] is a front perspective view of the light-blocking curtain of the present invention when it is unfolded.

[0031] Figure 15 is a schematic diagram of the present invention, showing the unfolding of the upper light-adjusting curtain controlled by the first pull rope device.

[0032] [Figure 16] is a cross-sectional view of the light-transmitting curtain of the present invention when it is unfolded.

[0033] [Figure 17] is a perspective view of the back of the light-transmitting curtain of the present invention when it is unfolded.

[0034] [Figure 18] is a front perspective view of the light-adjusting curtain of the present invention unfolded and allowing light to pass through. Implementation

[0035] To enable your review committee to have a better understanding of the purpose, features, and effects of this invention, the following is a detailed description in conjunction with the accompanying drawings:

[0036] First, as shown in Figures 1 to 3, a type of dimming Roman blind (II) includes an upper rail 10, a lower rail 20, a Roman blind body 30, an upper braking unit 40, and a lower braking unit 50. The upper rail 10 is internally equipped with at least one first rope winder 11 and at least one second rope winder 12. The first rope winder 11 winds up and unwinds a first rope 13, and the second rope winder 12 winds up and unwinds a second rope 14. The first and second rope winders 11 and 12 are respectively operated and controlled by a first puller 15 and a second puller 16. The lower rail 20 is movably and vertically positioned below the upper rail 10. The Roman blind 30 is assembled between the upper rail 10 and the lower rail 20. The Roman blind 30 has an upper dimming curtain 31 and a lower dimming curtain 32 connected to each other, providing light transmission and light blocking effects respectively. The top of the upper dimming curtain 31 is fixed to the upper rail 10, and the bottom of the lower dimming curtain 32 is fixed to the lower rail 20. Both the upper and lower dimming curtains 31 and 32 have a plurality of horizontal strips 33 arranged equidistantly from top to bottom. Further explanation is provided in Figures 4 and 9. The horizontal strip 33 is a hollow strip with a C-shaped cross-section, and an opening 331 is formed axially on the wall surface of the horizontal strip 33. The opening diameter of 31 is smaller than the inner diameter of the horizontal strip 33. Each horizontal strip 33 is fitted with a pressure strip 332. The outer diameter of the pressure strip 332 is larger than the opening diameter of the horizontal strip 33. The Roman blind 30 is pressed tightly into the horizontal strip 33 through the pressure strip 332. The two ends of the horizontal strip 33 are fixed by a double tube plug 333 assembly, further restricting the pressure strip 332 within the horizontal strip 33. Each horizontal strip 33 has a positioning rib 334 along its outer wall. Each horizontal strip 33, which is assembled on the upper light-adjusting curtain 31 and is staggered, is provided with at least one first buckle 34 and at least one second buckle 35. The horizontal strips 33 assembled on the lower light-adjusting curtain 31 are also provided with at least one first buckle 34 and at least one second buckle 35. 32. Each of the staggered horizontal bars 33 is provided with at least one third buckle 36. The third buckle 36 is aligned with the second buckle 35. Further, the first buckle 34, the second buckle 35, and the third buckle 36 each have a C-shaped fastening portion 341, 351, and 361 that can be displaceably fastened to the outer wall of the horizontal bar 33. The inner wall of each C-shaped fastening portion 341, 351, and 361 is provided with a positioning groove 342, 352, and 362. The positioning grooves 342, 352, and 362 engage with the positioning rib 334 for positioning, thereby preventing the first buckle 34, the second buckle 35, and the third buckle 36 from rotating on the outer wall of the horizontal bar 33.Furthermore, the outer walls of the first buckle 34, the second buckle 35, and the third buckle 36 all protrude to form through-holes 343, 353, and 363, respectively providing passage for the corresponding first rope 13 or second rope 14; the upper braking unit 40 has an upper braking horizontal bar 41, at least one first rope fastener 42, at least one fourth buckle 43, and a counterweight bar 44. The upper braking horizontal bar 41 is assembled at the junction of the upper and lower light-adjusting curtains 31 and 32. To further explain, as shown in Figures 5 and 9, the upper braking horizontal bar 41 is a hollow bar with a C-shaped cross-section, and an opening 411 is formed axially on the wall surface of the upper braking horizontal bar 41. The diameter of the opening 411 is smaller than the inner diameter of the upper braking horizontal bar 41. Each brake horizontal bar 41 is fitted with a pressure strip 412. The outer diameter of the pressure strip 412 is larger than the opening diameter 411 of the upper brake horizontal bar 41. The Roman curtain body 30 is pressed tightly into the upper brake horizontal bar 41 through the pressure strip 412. The two ends of the upper brake horizontal bar 41 are fixed by a double tube plug 413 assembly, further restricting the pressure strip 412 within the upper brake horizontal bar 41. Each upper brake horizontal bar 41 has a limiting rib 414 along its outer wall. The first rope fastener 42 is assembled on the upper brake horizontal bar 41 and aligned with the first buckle 34 of the horizontal bar 33. The first rope 13 passes through the first buckle 34 in sequence and connects to the first rope fastener 42, thereby using the first rope 13 to drive the upper brake unit. The lifting mechanism 40 achieves the unfolding and retraction of the upper light-adjusting curtain 31. Further explanation: the first rope fastener 42 includes a groove tube 421 and a rope winding shaft 422. The groove tube 421 has a rope winding groove 4211 formed by its two ends extending through it. A through hole 4212 is provided on the outer surface of the groove tube 421, communicating with the rope winding groove 4211. The outer surface of the groove tube 421 also has a C-shaped combination buckle 4213. The inner wall of the combination buckle 4213 has a limiting groove 4214 that engages with and is positioned by the limiting rib 414 on the outer wall of the upper brake horizontal bar 41. The rope winding shaft 422 is axially inserted into the rope winding groove 4211. One end of the rope winding shaft 422 has a limiting cone 4221 that extends out of the groove tube 421 and abuts against it for positioning. 221 has an axially oriented groove 4222 at one end, extending to the front end of the rope winding shaft 422 to form a rope-hooking slot 4223. The other end of the rope winding shaft 422 has a twisting portion 4224 that is tightly fitted into the other end of the groove tube 421. A tool hole 4225 is provided on the outer end face of the twisting portion 4224. Furthermore, the outer diameter of the rope winding shaft 422 is smaller than the inner diameter of the rope-hooking groove 4211, thus allowing the first rope 13 to pass through the through hole 4212 of the groove tube 421 and connect to the rope winding shaft 422. As shown in Figures 7 and 8, the rope-hooking slot 4223 is used to connect and fix one end of the first rope 13, enabling the rope winding shaft 422 to wind and unwind the first rope 13 within the rope-hooking groove 4211.To further achieve the horizontal adjustment of the upper brake horizontal bar 41, the fourth buckle 43 is assembled on the upper brake horizontal bar 41 and aligned with the second buckle 35 and the third buckle 36 of the horizontal bar 33. The fourth buckle 43 has a C-shaped buckle portion 431, which can be displaced to engage with the outer wall of the upper brake horizontal bar 41. The inner wall of the C-shaped buckle portion 431 of the fourth buckle 43 is provided with a positioning groove 432, which is engaged with the limiting rib 414 for positioning. This prevents the fourth buckle 43 from rotating on the outer wall of the upper brake horizontal bar 41. The outer wall of each fourth buckle 43 protrudes to form a through-hole 433, allowing the second rope 14 to pass through. The two ends of the counterweight bar 44 are secured to the upper brake horizontal bar 41 by two parallel fasteners 441. Each fastener 441 has two C-shaped buckle portions 442, one of which has a positioning groove 443 on its inner wall that engages with the limiting rib 414 of the upper brake horizontal bar 41 for positioning.

[0037] The lower braking unit 50 has a lower braking horizontal bar 51 and at least one second rope fastener 52. The lower braking horizontal bar 51 is assembled between the last horizontal bar 33 of the lower dimming curtain 32 and the lower rail 20. To further explain, as shown in Figures 6 and 9, the lower braking horizontal bar 51 is a hollow bar with a C-shaped cross-section, and an opening 511 is formed axially on the wall surface of the lower braking horizontal bar 51. The diameter of the opening 411 is smaller than the inner diameter of the lower braking horizontal bar 51. Each of the lower braking horizontal bars 51 is fitted with a pressure strip 512. The outer diameter of the pressure strip 512 is larger than the diameter of the opening 511 of the lower braking horizontal bar 51, and the Roman blind 30 is pressed tightly into the lower braking horizontal bar through the pressure strip 512. Inside 51, the two ends of the lower braking horizontal bar 51 are fixed by a double-tube plug 513 assembly, further restricting the pressure bar 512 within the lower braking horizontal bar 51. A limiting rib 514 is provided axially on the outer wall of the lower braking horizontal bar 51. The second rope fastener 52 is assembled on the lower braking horizontal bar 51, aligning with the second buckle 35, third buckle 36 of the horizontal bar 33, and the fourth buckle 43 of the upper braking unit 40. The second rope 14 passes sequentially through the second buckle 35, the fourth buckle 43, and the third buckle 36 before connecting to the second rope fastener 52. Thus, the second rope 14 drives the lower braking unit 50 to rise and fall, thereby expanding and retracting the lower dimming curtain 32. Further explanation: the second... The rope securing device 52 includes a grooved tube 521 and a rope winding shaft 522. The grooved tube 521 has a rope winding groove 5211 formed by its two ends extending through it. A through hole 5212 is provided on the outer surface of the grooved tube 521, communicating with the rope winding groove 5211. The outer surface of the grooved tube 521 also has a C-shaped combination buckle portion 5213. A limiting groove 5214 is provided on the inner wall of the combination buckle portion 5213, which engages and is positioned with the limiting rib 514 on the outer wall of the lower brake horizontal bar 51. The rope winding shaft 522 is axially inserted into the rope winding groove 5211. One end of the rope winding shaft 522 has a limiting cone portion 5221 that extends out of the grooved tube 521 and abuts against it for positioning. The limiting cone portion 5221 has an axially slit 5222 at its end, the slit 5222 being deep... The system extends to the front end of the rope winding shaft 522 to form a rope-hooking groove 5223. The other end of the rope winding shaft 522 has a twisting part 5224 and is tightly inserted into the other end of the groove tube 521. The outer end face of the twisting part 5224 is provided with a tool hole 5225. The outer diameter of the rope winding shaft 522 is smaller than the inner diameter of the rope winding groove 5211, thereby providing a way for the second rope 14 to pass through the through hole 5212 of the groove tube 521 and connect to the rope winding shaft 522. As shown in Figures 7 and 8, the rope-hooking groove 5223 is used to connect and fix one end of the second rope 14 so that the rope winding shaft 522 can be used to wind and unwind the second rope 14 in the rope winding groove 5211, thereby further achieving the purpose of horizontal adjustment of the lower brake level bar 51.

[0038] Further explanation: In this embodiment of the invention, two first rope winders 11 and two second rope winders 12 are provided inside the upper rail 10. The two first rope winders 11 wind up and unwind the two first ropes 13, and the two first rope winders 11 are connected to the first rope puller 15 via a first drive shaft 111, as shown in Figure 10. The two second rope winders 12 wind up and unwind the two second ropes 14, and the two second rope winders 12 are connected to the second rope puller 16 via a second drive shaft 121. Furthermore, a linkage device 17 and a clutch device 18 may be provided inside the upper rail 10. The linkage device 17 is installed on one of the adjacent first rope winders 11. The first drive shaft 111 and the second drive shaft 121 are connected to the first and second rope winders 11 and 12 respectively, so that the first and second rope winders 11 and 12 can achieve synchronous rope winding action through the linkage device 17. The clutch device 18 is installed on the first pull rope device 15 to provide disengagement action between the first pull rope device 15 and the first rope winder 11. The Roman blind 30 has two first buckles 34 and two second buckles 35 on each of the staggered horizontal strips 33 of the upper light-adjusting curtain 31, and two third buckles 36 on each of the staggered horizontal strips 33 of the lower light-adjusting curtain 32. The third buckle 36 is aligned with the two second buckles 35 respectively. The upper braking horizontal bar 41 is equipped with two first rope fasteners 42 and two fourth buckles 43. The two first rope fasteners 42 are aligned with the two first buckles 34 on the horizontal bar 33, and the two fourth buckles 43 are aligned with the two second buckles 35 and the third buckle 36 on the horizontal bar 33. The lower braking horizontal bar 51 is also equipped with two second rope fasteners 52. The two second rope fasteners 52 are aligned with the second buckles 35 and the third buckles 36 on the horizontal bar 33 and the fourth buckle 43 on the upper braking horizontal bar 41. Accordingly, the two first ropes 13 are arranged from top to bottom. The two first ropes 13 are sequentially passed through the two first buckles 34 on the horizontal bar 33 of the upper dimming curtain 31, and finally the ends of the two first ropes 13 are connected to the two first rope fasteners 42 on the upper braking horizontal bar 41. The two second ropes 14 are sequentially passed from top to bottom through the two second buckles 35 on the horizontal bar 33 of the upper dimming curtain 31, the two fourth buckles 43 on the upper braking horizontal bar 41, and the two third buckles 36 on the horizontal bar 33 of the lower dimming curtain 32. Finally, the ends of the two second ropes 14 are connected to the two second rope fasteners 52 on the lower braking horizontal bar 51, thereby completing the embodiment of the dimming Roman blind.

[0039] Further explanation is provided in Figures 6 and 9. The lower rail 20 has an axial groove 21 and a slot 211 at the top of the groove 21. The groove 21 provides a shaft rod 22 for insertion. The shaft rod 22 has a snap-fit ​​slot 221 along the axial direction. The bottom of the downlight-adjusting curtain 32 has a fixing piece 321 and is embedded in the snap-fit ​​slot 221 of the shaft rod 22. Then, the downlight-adjusting curtain 32 is wound around the shaft rod 22 and inserted into the groove 21 along the axial direction. Furthermore, a cover plate 23 is fixed at both ends of the lower rail 20 to restrict the shaft rod 22 within the groove 21.

[0040] In this embodiment, the upper light-adjusting curtain 31 of the Roman blind 30 is set as a light-transmitting curtain, and the lower light-adjusting curtain 32 is set as a light-blocking curtain. This is only one embodiment of the present invention and should not be considered as a limitation. The upper and lower light-adjusting curtains 31 and 32 can not only be interchanged as light-transmitting or light-blocking curtains, but can also be set as curtains with different light-transmitting and light-blocking effects according to special needs. As shown in Figures 1, 9, and 10, the upper and lower light-adjusting curtains 31 and 32 of the Roman blind 30 are raised to form a fully light-transmitting state by using the first and second pull ropes 15 and 16 to wind up the first and second ropes 13 and 14 respectively. The first rope 13 pulls the upper braking unit 40 upward, and the upper braking horizontal bar 41 pushes the horizontal bar 33 with the first buckle 34 upward and closes it, so that the horizontal bar 33 without the first buckle 34 hangs down, thereby draping the upper dimming curtain 31 in the same direction. The second rope 14 pulls the lower braking unit 50 upward, and the lower braking horizontal bar 51 pushes the horizontal bar 33 with the third buckle 36 upward and closes it, so that the horizontal bar 33 without the third buckle 36 hangs down, thereby draping the lower dimming curtain 32 in the same direction.

[0041] Next, as shown in Figures 11 to 14, this is a schematic diagram of the downward unfolding of the downlight-adjusting curtain 32 in this embodiment. The second pull rope device 16 drives the two second rope winders 12 to operate and release the two second ropes 14. At this time, the lower braking unit 50 is displaced downward due to the weight of the lower rail 20 itself, and the horizontal bar 33 of the downlight-adjusting curtain 32 with the third buckle 36 moves downward in sequence, thereby gradually unfolding the downlight-adjusting curtain 32 downward and flat. Since the downlight-adjusting curtain 32 is a light-blocking curtain, it further blocks external light to form a light-blocking state.

[0042] Figures 15 to 18 show a schematic diagram of the unfolding of the upper dimming curtain 31 in this embodiment. The first pull rope device 15 drives the two first rope winding devices 11 to operate and loosen the two first ropes 13. At this time, the upper braking unit 40 moves downward along the two second ropes 14 due to the weight of the counterweight 44, and causes the horizontal bar 33 of the upper dimming curtain 31 with the first buckle 34 to move downward in sequence, thereby gradually unfolding the upper dimming curtain 31 downward. Since the upper dimming curtain 31 is a light-transmitting curtain, it allows external light to pass through and form a light-transmitting state. At the same time, the curtain achieves the privacy effect of the room. When the upper dimming curtain 31 moves downward and unfolds, the upper braking unit 40 will move downward along the two second ropes 14 and push the horizontal bar 33 of the lower dimming curtain 32 with the third buckle 36 downward in sequence, thereby closing the lower dimming curtain 32 downward.

[0043] Furthermore, since the upward dimming curtain 31 unfolds downwards, it simultaneously causes the downward dimming curtain 32 to retract downwards. Thus, the degree of unfolding of the upward dimming curtain 31 is used to adjust the light transmission range, thereby achieving a semi-blocking and semi-transparent effect.

[0044] Continuing with Figures 9 and 10, this embodiment illustrates the upward retraction of both the upper and lower light-adjusting curtains 31 and 32 of the Roman blind 30. In a typical design, since the first and second rope winders 11 and 12 are not linked and operate independently, if the Roman blind 30 in the state shown in Figures 17 and 18 is directly controlled by the second pull rope 16 to actuate the second rope winder 12 and wind up the second rope 14, although the upper light-adjusting curtain 31 will be pushed upwards by the lower braking unit 50 and moved towards the upper rail 10, the first rope 13 will remain slack due to not being wound up, making it prone to tangling and knotting. Therefore, to form the Roman blind 30, both the upper and lower light-adjusting curtains 31 and 32 must be retracted upwards. In the fully transparent state, the first pull rope device 15 must first control the two first rope winders 11 to wind and collect the two first ropes 13, thereby driving the upper braking unit 40 to rise and push the horizontal bar 33 with the first buckle 34 of the upper light-adjusting curtain 31 towards the upper rail 10, thus achieving the purpose of closing the upper light-adjusting curtain 31. At this time, the lower light-adjusting curtain 32 is still in the unfolded state. Then, the second pull rope device 16 is used to control the two second rope winders 12 to wind and collect the two second ropes 14, thereby driving the lower braking unit 50 to rise and sequentially push the horizontal bar 33 with the third buckle 36 of the lower light-adjusting curtain 32 towards the upper braking unit 40, thereby achieving the state of the upper and lower light-adjusting curtains 31 and 32 being fully closed.

[0045] Furthermore, since the upper rail 10 of this embodiment is further provided with the linkage device 17 and the clutch device 18, the first and second rope winders 11 and 12 can achieve synchronous rope winding through the linkage device 17. The clutch device 18 is installed on the first rope puller 15, providing a disengagement effect between the first rope puller 15 and the first rope winder 11. Accordingly, when the first rope puller 15 is activated, the clutch device 18 is engaged, allowing the first rope puller 15 to control the winding operation of the two first rope winders 11. Conversely, when the two second rope winders 12 are pulled and controlled by the second rope puller 16 and connected through the linkage device 17, the clutch device 18 is engaged. When the first rope winder 11 is synchronously engaged to perform the winding action, the clutch device 18 will disengage, preventing the first rope winder 11 from driving the first pull rope 15 to operate in the opposite direction. This avoids damage to the first pull rope 15 and achieves a foolproof protection effect. At the same time, when the upper light-adjusting curtain 31 is in the unfolded state, the user can directly control the first and second rope winders 11 and 12 to wind up the first and second ropes 13 and 14 through the operation of the second pull rope 16, so that the upper braking unit 40 and the lower braking unit 50 can move upward at the same time, achieving the state where the upper and lower light-adjusting curtains 31 and 32 of the Roman blind 30 are fully retracted.

[0046] By utilizing the structure of the above-described specific embodiments, the following benefits can be obtained: The Roman blind 30 of the present invention has an upper dimming curtain 31 and a lower dimming curtain 32 with different dimming effects. The upper braking unit 40 is installed at the junction of the upper and lower dimming curtains 31 and 32. Through the cooperation of the first rope winding device 11, the first rope body 13 and the first pull rope device 15, the upper braking unit 40 can be driven to rise and fall, so as to achieve the closing and unfolding action of the upper dimming curtain 31. The lower braking unit 50 is installed above the lower rail 20 of the lower dimming curtain 32. Through the cooperation of the second rope winding device 12, the second rope body 14 and the second pull rope device 16, the lower braking unit 50 can be driven to rise and fall, so as to achieve the closing and unfolding action of the lower dimming curtain 32. This gives the Roman blind 30 a two-stage operation control effect, thereby providing users with the ability to adjust the amount of light entering while taking into account the indoor privacy effect, greatly improving the practicality of the dimming Roman blind, and thus increasing consumers' willingness to purchase.

[0047] Furthermore, the upper braking horizontal bar 41 of the upper braking unit 40 and the lower braking horizontal bar 51 of the lower braking unit 50 are installed on the Roman blind 30 in the same configuration as the horizontal bar 33. When the Roman blind 30 is unfolded, the front view of the curtain not only has a sense of unity, but also makes the curtain flatter when unfolded. In addition, when the Roman blind 30 is closed, the curtain can fall neatly in the same direction, ensuring the stability of the curtain when it is closed and also having an aesthetic effect.

[0048] In conclusion, this invention has indeed achieved a breakthrough in structural design and possesses improved inventive content. At the same time, it can achieve industrial applicability and progress. Furthermore, this invention has not been published in any publication and also possesses novelty. Therefore, it meets the relevant provisions of the Patent Law. Thus, we have filed an invention patent application in accordance with the law and earnestly request the Examining Committee of the Bureau to grant legal patent rights. We are deeply grateful.

[0049] The above description is merely one preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention; that is, all equivalent changes and modifications made in accordance with the claims of the present invention should still fall within the scope of the present invention.

[0050]

[0051] 10: Upper rail

[0052] 11: First Rope Winding Device

[0053] 12: Second Rope Winding Device

[0054] 13: First rope body

[0055] 14: Second rope

[0056] 15: First rope puller

[0057] 16: Second rope puller

[0058] 17: Linkage device

[0059] 18: Clutch mechanism

[0060] 20: Lower rail

[0061] 21: Shaft Groove

[0062] 211: Groove

[0063] 22: Shaft

[0064] 221: Clip slot

[0065] 23: Cover plate

[0066] 30: Roman Curtain

[0067] 31: Adjusting the light curtain

[0068] 32: Lower the light curtain

[0069] 321: Fixing plate

[0070] 33: Horizontal bar

[0071] 331: Opening

[0072] 332: Pressing strip

[0073] 333: Pipe plug

[0074] 334: Positioning Rib

[0075] 34: First buckle

[0076] 341: C-shaped buckle

[0077] 342: Positioning groove

[0078] 343: Perforated section

[0079] 35: Second buckle

[0080] 351: C-shaped buckle

[0081] 352: Positioning Groove

[0082] 353: Perforated section

[0083] 36: Third buckle

[0084] 361: C-shaped buckle

[0085] 362: Positioning Groove

[0086] 363: Perforated section

[0087] 40: Upper Braking Unit

[0088] 41: Upper brake level bar

[0089] 411: Opening

[0090] 412: Pressing strip

[0091] 413: Pipe plug

[0092] 414: Limiting Rib

[0093] 42: First rope securing device

[0094] 421: Grooved tube

[0095] 4211: Rope Winding Groove

[0096] 4212: Perforation

[0097] 4213: Combination buckle

[0098] 4214: Limiting groove

[0099] 422: Rope Winding Shaft

[0100] 4221: Limiting cone

[0101] 4222: Groove

[0102] 4223: Cord groove

[0103] 4224: Torsion section

[0104] 4225: Tool Hole

[0105] 43: Fourth buckle

[0106] 431: C-shaped buckle

[0107] 432: Positioning Groove

[0108] 433: Perforated section

[0109] 44: Counterweight bar

[0110] 441: Fasteners

[0111] 442: C-shaped buckle

[0112] 443: Positioning Groove

[0113] 50: Lower Braking Unit

[0114] 51: Lower brake horizontal bar

[0115] 511: Opening

[0116] 512: Pressing strip

[0117] 513: Pipe plug

[0118] 514: Limiting rib

[0119] 52: Second rope securing device

[0120] 521: Grooved tube

[0121] 5211: Rope Winding Groove

[0122] 5212: Perforation

[0123] 5213: Combination buckle

[0124] 5214: Limiting groove

[0125] 522: Rope Winding Shaft

[0126] 5221: Limiting cone

[0127] 5222: Groove

[0128] 5223: Cord groove

[0129] 5224: Torsion section

[0130] 5225: Tool Hole

Claims

1. A dimming Roman blind, comprising: An upper rail is provided with at least one first rope winder and at least one second rope winder inside. The first rope winder winds and unwinds a first rope, and the second rope winder winds and unwinds a second rope. The first and second rope winders are operated and controlled by a first puller and a second puller, respectively. A lower rail is movably and vertically mounted below the upper rail. A Roman blind is assembled between the upper and lower rails. The Roman blind has an upper dimming curtain and a lower dimming curtain with different dimming effects that are connected. The top end of the upper dimming curtain is fixed to the upper rail, and the bottom end of the lower dimming curtain is fixed to the lower rail. Both the upper and lower dimming curtains are provided with a plurality of horizontal strips equidistantly arranged from top to bottom. Each of the horizontal strips arranged on the upper dimming curtain and spaced apart is provided with at least one first buckle and at least one second buckle. The unit comprises a buckle, wherein each of the horizontal bars arranged in a staggered manner on the lower light-adjusting curtain is provided with at least one third buckle, the third buckle being aligned with the second buckle; an upper braking unit having an upper braking horizontal bar, at least one first rope fastener, at least one fourth buckle, and a counterweight bar. The upper braking horizontal bar is arranged at the junction of the upper and lower light-adjusting curtains. The first rope fastener is arranged on the upper braking horizontal bar and aligned with the first buckle of the horizontal bar. The first rope system passes through the first buckle in sequence and is connected to the first rope fastener, thereby using the first rope to drive the upper braking unit to lift and lower to achieve the opening and closing of the upper light-adjusting curtain. The fourth buckle is arranged on the upper braking horizontal bar and aligned with the second and third buckles of the horizontal bar. The two ends of the counterweight bar are secured to the upper braking horizontal bar by two parallel fasteners. A lower braking unit has a lower braking horizontal bar and at least one second rope fastener. The lower braking horizontal bar is assembled between the last horizontal bar of the lower dimming curtain and the lower rail. The second rope fastener is assembled on the lower braking horizontal bar and aligned with the second and third buckles of the horizontal bar and the fourth buckle of the upper braking unit. The second rope passes through the second buckle, the fourth buckle and the third buckle in sequence and is connected to the second rope fastener, thereby using the second rope to drive the lower braking unit to rise and fall to achieve the unfolding and closing of the lower dimming curtain.

2. The dimming Roman blind as described in claim 1, wherein, The upward-dimming curtain and the downward-dimming curtain provide light transmission and light blocking effects, respectively.

3. The dimming Roman blind as described in claim 1, wherein, The horizontal strip is a hollow strip with a C-shaped cross-section and an axial opening formed on its wall surface. The diameter of the opening is smaller than the inner diameter of the horizontal strip. Each horizontal strip is fitted with a pressure strip, the outer diameter of which is larger than the opening diameter of the horizontal strip. The Roman blind is pressed tightly into the horizontal strip through the pressure strip. The two ends of the horizontal strip are fixed by a double-tube plug assembly, further restricting the pressure strip within the horizontal strip. The first, second, and third buckles each have a C-shaped buckle portion and can be displaced and snapped onto the outer wall of the horizontal strip. The outer walls of the first, second, and third buckles each have a protruding perforation portion, providing a corresponding first and second rope for passing through.

4. The dimming Roman blind as described in claim 3, wherein, The outer wall of the horizontal strip is provided with a positioning rib along the axial direction. The inner wall of the C-shaped buckle of the first buckle, the second buckle and the third buckle are provided with a positioning groove. The positioning groove and the positioning rib are engaged and positioned to prevent the first buckle, the second buckle and the third buckle from rotating on the outer wall of the horizontal strip.

5. The dimming Roman blind as described in claim 1, wherein, Both the upper and lower brake horizontal bars are hollow strips with a C-shaped cross-section. An opening is formed axially on the wall surface of each upper and lower brake horizontal bar. The diameter of the opening is smaller than the inner diameter of the upper and lower brake horizontal bars. A pressure strip is fitted into each of the upper and lower brake horizontal bars. The outer diameter of the pressure strip is larger than the opening diameter of the upper and lower brake horizontal bars. The Roman curtain body is pressed tightly into the upper and lower brake horizontal bars through the pressure strip. Both ends of the upper and lower brake horizontal bars are fixed by a two-tube plug assembly, further restricting the pressure strip within the upper and lower brake horizontal bars. The fourth buckle has a C-shaped buckle portion and can be displaced to snap onto the outer wall of the upper brake horizontal bar. The outer wall of the fourth buckle is formed by a protruding through-hole portion, which provides passage for the second rope.

6. The dimming Roman blind as described in claim 5, wherein, Both the upper and lower brake horizontal bars have a limiting rib on their outer walls along the axial direction. The inner wall of the C-shaped buckle of the fourth buckle has a positioning groove. The positioning groove is engaged with the limiting rib of the upper brake horizontal bar to prevent the fourth buckle from rotating on the outer wall of the upper brake horizontal bar.

7. The dimming Roman blind as described in claim 6, wherein, Both the first and second rope fasteners include a grooved tube and a rope winding shaft. The grooved tube has a rope winding groove formed by its two ends extending through it, and a through hole communicating with the rope winding groove is provided on the outer surface of the grooved tube. The outer surface of the grooved tube also has a C-shaped combination buckle. The inner wall of the combination buckle has a positioning groove that engages with the limiting ribs on the outer walls of the upper and lower brake horizontal bars for positioning. The rope winding shaft is axially inserted into the rope winding groove, and one end of the rope winding shaft has a limiting cone. The first rope and the second rope are positioned against the groove tube at one end and are tightly fitted into the other end of the groove tube at the other end. The outer end face of the twisting part is provided with a tool hole. The outer diameter of the rope shaft is smaller than the inner diameter of the rope groove, so that the first rope and the second rope can pass through the through hole of the groove tube and be connected to the rope shaft. The first and second ropes are wound and released by the rope shaft in the rope groove, thereby achieving the purpose of horizontal adjustment of the upper and lower brake level bars.

8. The dimming Roman blind as described in claim 7, wherein, The limiting cone of the rope winding shaft has an axial groove at its end. The groove extends to the front end of the rope winding shaft to form a rope-hooking groove, thereby using the rope-hooking groove to connect and fix one end of the first rope and the second rope.

9. The dimming Roman blind as described in claim 1, wherein, The lower rail has an axial groove and an opening at the top of the groove. The groove provides a shaft for a rod to pass through. The shaft has a snap-fit ​​groove along the axial direction. The bottom of the lower light-adjusting curtain has a fixing piece that is embedded in the snap-fit ​​groove of the shaft. Then, the lower light-adjusting curtain is rolled around the shaft and passed through the groove along the axial direction. Furthermore, a cover plate is fixed at each of the left and right ends of the lower rail to restrict the shaft within the groove.

10. The dimming Roman blind as described in claim 1, wherein, The upper rail may be equipped with a linkage device and a clutch device. The linkage device is installed between the first rope winder and the second rope winder so that the first and second rope winders can achieve synchronous rope winding through the linkage device. The clutch device is installed on the first rope puller to provide the first rope puller and the first rope winder with disengagement action.

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