Shangri-la blind and dimming method therefor

Abstract

The present invention relates to a Shangri-La blind and a diming method therefor. The Shangri-La blind comprises a roller tube, a bottom bar and a blind body having an upper end connected to the roller tube and a lower end connected to the bottom bar. The blind body comprises a front piece, a rear piece and a plurality of connection slats which are connected at equal intervals between the front piece and the rear piece; a rotatable roller shaft is provided inside the bottom bar, the lower end of the blind body being connected to the roller shaft; the roller shaft rotates to roll up and unroll the lower end of the blind body, so as to adjust the unrolled length of the blind body. In the present invention, by means of the roller shaft additionally provided in the bottom bar, the lower end of the blind body is rolled up and unrolled, such that rotating the roller shaft can roll up or unroll the blind body from the lower end of the blind body, thus adjusting the unrolled length of the blind body. When the Shangri-La blind is fully unrolled to a light-transmitting state, rotating the roller shaft can adjust the bottom hem of the blind body to any position within the length range of the blind body, so that the Shangri-La blind can dim light at any position where a window is not completely shielded, and can be freely adjusted to any length to be adapted to windows of various heights, thus allowing for mass production and sales.

Description

Shangri-La curtain and dimming method thereof Technical Field

[0001] The present invention relates to the technical field of curtains, and in particular to a Shangri-La curtain and a dimming method thereof. Background Art

[0002] The Shangri-La curtain is widely loved by consumers for its unique design and dimming function. It can not only be rolled up like a roller blind, but also dimmed like a blind. Generally, the Shangri-La curtain has a pair of parallel sheets with multiple blades. When the curtain is closed, the blades are basically parallel to the paired sheets, which is convenient for rolling up. When the curtain is opened, the blades are basically perpendicular to the paired sheets, which is convenient for light transmission. However, generally, the Shangri-La curtain requires that the sheets be completely rolled up, that is, after the sheets are rolled up to the extreme position, the roller tube continues to rotate half a circle to adjust the blades to a position perpendicular to the sheets to achieve dimming. At this time, the sheets are fully unfolded and block the entire window area. That is, the Shangri-La curtain cannot be dimmed when the sheets are not completely covering the window, because when the sheets are not completely rolled up, the two parallel sheets are attached to each other, and the middle blade is also vertical, in a light-blocking state. Therefore, people cannot dim the light when the Shangri-La curtain is partially unfolded. This is a problem that needs to be solved. The problem is solved, so that people can achieve dimming at any position where the Shangri-La curtains do not completely cover the windows. In addition, since the unfolded length of the Shangri-La curtains needs to be customized according to the height of the window area, for example, if the height of the window area is 1.3 meters, a Shangri-La curtain with an unfolded length of 1.3 meters will be customized. If a Shangri-La curtain with an unfolded length of 1.5 meters is received, the Shangri-La curtain must be fully unfolded to 1.5 meters to achieve dimming. At this time, the excess length of 0.2 meters will appear very cumbersome, because this problem will arise due to inaccurate measurement under normal circumstances. People need to return or cut the goods to solve this problem, and consumers may cut the goods roughly when they cut themselves, which increases the extremely poor experience for consumers. Moreover, customization also makes it impossible for Shangri-La curtains to be mass-produced and sold, and it is difficult to put them in large shopping malls and supermarkets. Therefore, this is also a problem that needs to be solved to facilitate people's installation and use, and facilitate large-scale placement in shopping malls and supermarkets.

[0003] Summary of the Invention

[0004] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a Shangri-La curtain and a dimming method thereof, which can automatically adjust the height of the curtain hem so that the Shangri-La curtain can be dimmed at any position without completely covering the window, and the curtain length can be adjusted arbitrarily to adapt to windows of various heights, thereby realizing mass production and sales.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a Shangri-La curtain, including a roller, a lower beam and a curtain body with an upper end connected to the roller and a lower end connected to the lower beam, the curtain body including a front piece, a rear piece and a plurality of connecting pieces connected between the front piece and the rear piece at equal intervals, a rotatable roller is provided in the lower beam, the lower end of the curtain body is connected to the roller, and the roller rotates to retract and extend the lower end of the curtain body to adjust the length of the unfolded curtain body.

[0006] Furthermore, the upper end of the front piece is connected to the roll, the lower end of the front piece is connected to the reel, the upper end of the rear piece is connected to the roll, the lower end of the rear piece is connected to the reel, and the connection positions of the upper end of the front piece and the upper end of the rear piece with the roll do not overlap.

[0007] Furthermore, the lower beam is provided with an installation cavity for accommodating the reel, and the installation cavity runs through both ends along the length direction of the lower beam. The top of the lower beam is provided with a long opening for the curtain body to pass through but not for the reel, and the long opening is connected to the installation cavity.

[0008] Furthermore, end covers are provided at both ends of the lower beam, and a control component for adjusting the roller is provided on the end cover of at least one end. The control component is used to adjust the roller to rotate and retract the lower end of the curtain body under the action of external force. The control component is used to lock the roller in a natural state to limit the free rotation of the roller.

[0009] Furthermore, a control assembly for adjusting the reel is provided on the end cover at one end of the lower beam, and a connecting portion for connecting the control assembly is provided on the side of the end cover facing the reel, and a connecting shaft for connecting the reel is provided on the end cover at the other end of the lower beam, and the reel can rotate relative to the connecting shaft, and the control assembly includes a drive shaft, a spring, a limit stop sleeve and a transmission seat.

[0010] Furthermore, the transmission seat includes a first connecting part and a second connecting part in a cylindrical shape. The first connecting part is plugged into the connecting part and can rotate relative to the connecting part, and the second connecting part is plugged into the reel and can drive the reel to rotate synchronously. The limit stop sleeve is clamped with one end of the connecting part facing the reel, and the spring is arranged in the connecting part and is sleeved on the drive shaft. The drive shaft passes through the transmission seat, the limit stop sleeve, the spring, and the connecting part from the inside to the outside. One end of the spring abuts against the limit stop sleeve, and the other end abuts against the drive shaft. The drive shaft is connected to the transmission seat. In the natural state, the spring pushes the drive shaft outward to lock the drive shaft, thereby locking the reel. When the external force pushes the drive shaft inward, the external force overcomes the spring elastic force to unlock the drive shaft and rotates the drive shaft to drive the transmission seat to rotate, thereby driving the reel to rotate the lower end of the curtain body to adjust the length of the curtain body.

[0011] Furthermore, the outer diameter of the first connecting part is larger than the outer diameter of the second connecting part, the first connecting part is provided with a first cavity connected to the outside, the first cavity is sleeved with the connecting part, the second connecting part is provided with a second cavity connected to the first cavity, a plurality of convex ridges arranged at equal intervals are provided in the second cavity, a plurality of slots arranged at equal intervals are provided on the outer surface of the second connecting part, a clip that cooperates with the slots is provided in the reel, a first blocking portion is formed at the transition between the outer surfaces of the first connecting part and the second connecting part, the first blocking portion is blocked with the end of the reel, and the The second stop portion is formed at the transition between the inner surfaces of the first cavity and the second cavity, and the end of the drive shaft extending into the transmission seat is provided with a groove that cooperates with the convex ridge in the second cavity. The drive shaft is used to drive the transmission seat to rotate, thereby driving the reel to rotate. The end of the drive shaft away from the transmission seat is provided with a radially expanded convex ring, and the convex ring forms a third stop portion toward the end of the transmission seat. The end of the convex ring away from the transmission seat forms a fourth stop portion, and the fourth stop portion is provided with a plurality of equally spaced teeth. A driving groove for driving an external tool is provided on the end surface of the drive shaft away from the transmission seat. A accommodating cavity is provided in the connecting portion, and the end of the accommodating cavity away from the end cover is an open structure, and the open structure can allow the drive shaft to penetrate. A through hole connected to the accommodating cavity is opened on the end cover, and the through hole can allow the end of the drive shaft to be exposed to facilitate the docking of external tools with the drive groove. A fifth blocking portion is formed at the transition between the accommodating cavity and the through hole, and the fifth blocking portion is used to resist the fourth blocking portion. The fifth blocking portion is provided with a convex tooth engaged with the latch to limit the radial free rotation of the drive shaft. The limit stopper is engaged with the open structure of the accommodating cavity, and two symmetrical blocks are provided on the outer wall of the limit stopper. The inner portion of the accommodating cavity A bayonet that cooperates with the block is provided on the wall. The limit stop sleeve is sleeved on the drive shaft, and the drive shaft can rotate relative to the limit stop sleeve. The spring is provided in the accommodating cavity and sleeved on the drive shaft. One end of the spring abuts the end of the limit stop sleeve, and the other end abuts the third stop portion. In the natural state, the spring pushes the drive shaft outward so that the latching teeth engage with the convex teeth to lock the drive shaft, thereby locking the reel. When the external force pushes the drive shaft inward so that the latching teeth disengage from the convex teeth, the drive shaft is unlocked, and the external force rotates the drive shaft to drive the transmission seat to rotate, thereby driving the reel to rotate the lower end of the curtain body to retract and unfold the curtain body to adjust the length of the curtain body.

[0012] Furthermore, a control component for adjusting the reel is provided on the end cover at one end of the lower beam, and the control component is a columnar adjusting shaft, which is integrally formed with the end cover, and the adjusting shaft is plugged into the reel, and a plurality of convex rails arranged at equal intervals are provided on the outer peripheral wall of the adjusting shaft, and a concave rail that cooperates with the convex rail is provided in the reel, and a connecting shaft for connecting the reel is provided on the end cover at the other end of the lower beam, and the reel can rotate relative to the connecting shaft.

[0013] A Shangri-La curtain dimming method comprises the following steps:

[0014] S1. Rotate the roller to roll the curtain downward to a fully extended state. At this time, the curtain is in a light-transmitting state, with the front and rear panels separated from each other. The connecting piece is vertically connected between the front and rear panels. Then, the lower end of the curtain is retracted by rotating the roller, so that the lower beam moves upward along the lower end of the curtain. Then, by locking the roller, the lower beam can be stopped at any position within the extended length of the curtain, thereby adjusting the extended length of the curtain. This allows the Shangri-La curtain to arbitrarily adjust the area of ​​the window covered in the light-transmitting state.

[0015] S2. Rotate the roller to roll the curtain downward for a certain length. At this time, the curtain is still in the light-blocking state, with the front and rear pieces attached and the connecting piece vertically sandwiched between the front and rear pieces. Then, rotate the roller to retract the lower end of the curtain so that the lower beam moves upward along the lower end of the curtain. First, adjust the length of the curtain for a certain length, then lock the roller and continue to rotate the roller to roll the curtain downward until it is fully extended. At this time, the curtain is in the light-transmitting state, with the front and rear pieces separated front and back, and the connecting piece vertically connected between the front and rear pieces. This enables the Shangri-La curtain to arbitrarily adjust the area of ​​the window blocked in the light-transmitting state.

[0016] S3. You can choose step S1 or step S2 to adjust the length of the curtain body, so that the Shangri-La curtain can arbitrarily adjust the area of ​​the window to be covered in the light-transmitting state.

[0017] Furthermore, the step of rotating the reel in steps S1 and S2 is to push the drive shaft by an external tool to overcome the elastic force of the spring and move inward, so that the latching teeth are disengaged from the convex teeth, unlocking the drive shaft, and then rotating the drive shaft by the external tool. The drive shaft drives the transmission seat to rotate the reel, and the reel retracts and unwinds the curtain body. The step of locking the reel in steps S1 and S2 is to remove the external tool, and the drive shaft moves outward under the action of the spring force, so that the latching teeth are engaged with the convex teeth to lock the drive shaft, thereby locking the reel.

[0018] Furthermore, the step of rotating the reel in steps S1 and S2 is to pull out the end cover with the adjusting shaft at the end of the lower beam so that the adjusting shaft on the end cover is plugged into the reel part, and then rotate the end cover to drive the reel to rotate through the adjusting shaft, and the reel retracts and releases the curtain body. The step of locking the reel in steps S1 and S2 is to insert the end cover back into the end of the lower beam, at which time the adjusting shaft is plugged into the reel, thereby locking the reel.

[0019] Compared with the prior art, the advantages of the present invention are: the present invention adds a roller in the lower beam to roll up the lower end of the curtain body, and the curtain body can be rolled up or rolled up from the lower end of the curtain body by rotating the roller, so as to adjust the unfolded length of the curtain body. When the Shangri-La curtain is fully unfolded to the light-transmitting state, the bottom hem of the curtain body can be adjusted to any position within the curtain length range by rotating the roller. For example, if the unfolded length of the curtain body is 1.5 meters, the roller can be adjusted so that the unfolded length of the curtain body is 1.3 meters, so that the Shangri-La curtain can be dimmed at any position without completely covering the window, and the curtain length can be adjusted arbitrarily, adapting to windows of various heights, and realizing mass production and sales. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0022] FIG1 is a schematic structural diagram of the present invention in a light-shielding state;

[0023] FIG2 is a schematic diagram of the structure of the present invention in a light-transmitting state;

[0024] FIG3 is a schematic structural diagram of a retracted portion of the lower end of the curtain in a light-transmitting state according to the present invention;

[0025] FIG4 is an exploded view of the present invention in a light-transmitting state;

[0026] FIG5 is a schematic diagram of the disassembly of the reel and the end cap with the control assembly according to Example 1 of the present invention;

[0027] FIG6 is an exploded view of the end cover with the control assembly according to Example 1 of the present invention;

[0028] FIG7 is an internal cross-sectional view of the lower beam of Example 1 of the present invention;

[0029] FIG8 is an enlarged view of A in FIG7 ;

[0030] FIG9 is a schematic structural diagram of an end cover on one side of a control assembly according to Example 1 of the present invention;

[0031] FIG10 is a schematic structural diagram of a drive shaft according to Example 1 of the present invention;

[0032] FIG11 is a schematic structural diagram of a transmission base according to Example 1 of the present invention;

[0033] FIG12 is a schematic diagram of the disassembly of the reel and the end cap with the control assembly according to Example 2 of the present invention;

[0034] As shown in the figure, 1 is a reel, 2 is a lower beam, 2.1 is an installation cavity, 2.2 is a long mouth, 3 is a curtain body, 3.1 is a front piece, 3.2 is a rear piece, 3.3 is a connecting piece, 4 is a reel, 4.1 is a card strip, 4.2 is a concave rail, 5 is an end cover, 5.1 is a connecting part, 5.2 is a connecting shaft, 5.3 is an accommodating cavity, 5.4 is a through hole, 5.5 is a fifth blocking part, 5.6 is a convex tooth, 5.7 is a bayonet, 6 is a driving shaft, 6.1 is a groove, 6.2 is a convex ring, 6.3 is a third blocking part, 6.4 is a fourth blocking part, 6.5 is a card tooth, 6.6 is a driving groove, 7 is a spring, 8 is a limit stop sleeve, 8.1 is a card block, 9 is a transmission seat, 9.1 is a first connecting part, 9.2 is a second connecting part, 9.3 is a first cavity, 9.4 is a second cavity, 9.5 is a card slot, 9.6 is a convex ridge, 9.7 is a first blocking part, 9.8 is a second blocking part, 10 is an adjusting shaft, 10.1 is a convex rail. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with specific embodiments.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In the present invention, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] As shown in Figures 1-4, the present invention provides a Shangri-La curtain, comprising a roller 1, a lower beam 2, and a curtain body 3 connected to the roller 1 at the upper end and the lower end and the lower beam 2. The curtain body 3 includes a front piece 3.1, a rear piece 3.2, and a plurality of connecting pieces 3.3 connected between the front piece 3.1 and the rear piece 3.2 at equal intervals. A rotatable roller 4 is provided in the lower beam 2. The lower end of the curtain body 3 is connected to the roller 4. The roller 4 rotates to retract and release the lower end of the curtain body 3 to adjust the length of the curtain body 3 to be unfolded. The upper end of the front piece 3.1 is connected to the roller 1, the lower end of the front piece 3.1 is connected to the roller 4, the upper end of the rear piece 3.2 is connected to the roller 1, and the rear piece 3.2 is connected to the roller 1. The lower end of the sheet 3.2 is connected to the reel 4, and the upper end of the front sheet 3.1 and the upper end of the rear sheet 3.2 do not overlap with the connection position of the reel 1. When the reel 1 rotates to release the entire curtain body 3, it is rotated at a certain angle to separate the front sheet 3.1 and the rear sheet 3.2 front and back. The connecting sheet 3.3 is vertically connected between the front sheet 3.1 and the rear sheet 3.2 to achieve light transmission. The curtain body 3 is in a light-shielding state before it is fully unfolded to a light-transmitting state, that is, the front sheet 3.1 and the rear sheet 3.2 are in contact with each other, and the connecting sheet 3.3 is vertically sandwiched between the front sheet 3.1 and the rear sheet 3.2. The light-shielding rate of the connecting sheet 3.3 is greater than the light-shielding rate of the front sheet 3.1 and the rear sheet 3.2.

[0041] Traditional Shangri-La curtains need to be fully unfolded before they can be adjusted for shading or light transmission, because the roller must completely roll up the curtain body before the front and rear pieces can be adjusted to separate, and the connecting piece is adjusted from a vertical state to a horizontal state. This results in the Shangri-La curtains being fully unfolded when dimming, and their unfolded length is uniquely determined and cannot be changed. For example, if the unfolded length of the curtain body is 1.5 meters, it cannot be changed. If it is to be adjusted to 1.3 meters, the roller must be rolled up, and the unfolded part of the curtain body after rolling up is always in a shading state and cannot transmit light, which is very inconvenient. The present invention rolls up the curtain body by adding a roller 4 in the lower beam 2 3, the curtain body 3 can be rolled up or unrolled from the lower end of the curtain body 3 by rotating the reel 4 to adjust the unfolded length of the curtain body 3. When the Shangri-La curtain is fully unfolded to a light-transmitting state, the bottom hem of the curtain body 3 can be adjusted to any position within the length range of the curtain body 3 by rotating the reel 4. For example, if the unfolded length of the curtain body 3 is 1.5 meters, the reel 4 can be adjusted to make the unfolded length of the curtain body 3 1.3 meters without affecting the light transmission, thereby enabling the Shangri-La curtain to achieve dimming at any position without completely covering the window, and the curtain length can be adjusted arbitrarily, adapting to windows of various heights, and realizing mass production and sales.

[0042] Among them, referring to Figure 4, the lower beam 2 is provided with an installation cavity 2.1 for accommodating the reel 4. The installation cavity 2.1 runs through both ends along the length direction of the lower beam 2. The top of the lower beam 2 is provided with a long opening 2.2 for the curtain body 3 to pass through but not for the reel 4 to pass through. The long opening 2.2 is communicated with the installation cavity 2.1, and the reel 4 can rotate in the installation cavity 2.1 without interference. The long opening 2.2 can allow the curtain body 3 to pass through and connect with the reel 4, and can also prevent the reel 4 from being brought out of the installation cavity 2.1 by the curtain body 3. Since the volume of the reel 4 will increase when the curtain body 3 is rolled up, the space of the installation cavity 2.1 is sufficient to accommodate the reel 4 and the part of the curtain body 3 rolled on the reel 4.

[0043] 4 , 5 , and 12 , end covers 5 are provided at both ends of the lower beam 2 , and a control component for adjusting the reel 4 is provided on the end cover 5 at least at one end. The control component is used to adjust the reel 4 to rotate and retract the lower end of the curtain body 3 under the action of an external force. The control component is used to lock the reel 4 in a natural state to limit the free rotation of the reel 4 . In addition, the setting of the end cover 5 not only serves an aesthetic purpose, but also can close the two ends of the lower beam 2 to axially limit the reel 4 and part of the curtain body 3 in the lower beam 2 .

[0044] Example 1

[0045] Referring to Figures 1-11, as a preferred embodiment, the end cover 5 at one end of the lower beam 2 is provided with a control component for adjusting the reel 4, and the end cover 5 is provided with a connecting portion 5.1 for connecting the control component on the side facing the reel 4, and the end cover 5 at the other end of the lower beam 2 is provided with a connecting shaft 5.2 for connecting the reel 4, and the reel 4 can rotate relative to the connecting shaft 5.2. The control component includes a drive shaft 6, a spring 7, a limit stop sleeve 8 and a transmission seat 9.

[0046] Among them, the transmission seat 9 includes a first cylindrical connecting part 9.1 and a second connecting part 9.2, which are convenient for rotation. The first connecting part 9.1 is plugged into the connecting part 5.1 and can rotate relative to the connecting part 5.1. The second connecting part 9.2 is plugged into the reel 4 and can drive the reel 4 to rotate synchronously. The limit stopper 8 is clamped with one end of the connecting part 5.1 facing the reel 4. The spring 7 is arranged in the connecting part 5.1 and is sleeved on the drive shaft 6. The drive shaft 6 is connected from the inside to the outside in sequence. Transmission seat 9, limit stop sleeve 8, spring 7, connecting part 5.1, one end of the spring 7 abuts against the limit stop sleeve 8, and the other end abuts against the drive shaft 6. The drive shaft 6 is connected to the transmission seat 9. In the natural state, the spring 7 pushes the drive shaft 6 outward to lock the drive shaft 6, thereby locking the reel 4. When the external force pushes the drive shaft 6 inward, the external force overcomes the elastic force of the spring 7 to unlock the drive shaft 6 and rotate the drive shaft 6 to drive the transmission seat 9 to rotate, thereby driving the reel 4 to rotate the lower end of the curtain body 3 to adjust the unfolded length of the curtain body 3.

[0047] Among them, the outer diameter of the first connecting part 9.1 is larger than the outer diameter of the second connecting part 9.2, and the first connecting part 9.1 is provided with a first cavity 9.3 connected to the outside, and the first cavity 9.3 is sleeved on the connecting part 5.1 and can rotate relative to the connecting part 5.1. The second connecting part 9.2 is provided with a second cavity 9.4 connected to the first cavity 9.3, and the second cavity 9.4 can be used for the drive shaft 6 to be inserted into the transmission connection, and the second cavity 9.4 is provided with a plurality of convex ridges 9.6 arranged at equal intervals. The outer surface of the second connecting part 9.2 is provided with a plurality of card slots 9.5 arranged at equal intervals, and the reel 4 is provided with a card strip 4.1 that cooperates with the card slot 9.5. The card strip 4.1 cooperates with the card slot 9.5 to realize the linkage between the reel 4 and the transmission seat 9. The transition between the outer surfaces of the first connecting part 9.1 and the second connecting part 9.2 forms a first blocking portion 9.7, which is in blocking contact with the end of the reel 4. The transition between the inner surfaces of the first cavity 9.3 and the second cavity 9.4 forms a second blocking portion 9.8. The end of the drive shaft 6 extending into the transmission seat 9 is provided with a groove 6.1 that cooperates with the ridge 9.6 in the second cavity 9.4. The engagement of the ridge 9.6 and the groove 6.1 can realize the linkage between the drive shaft 6 and the transmission seat 9. The drive shaft 6 is used to drive the transmission seat 9 to rotate and thereby drive the reel 4 to rotate. The end of the drive shaft 6 away from the transmission seat 9 is provided with a radially expanded convex ring 6.2, which forms a third blocking portion 6.3 toward one end of the transmission seat 9. The convex ring 6.2 is away from the transmission seat 9 forms a fourth blocking portion 6.4 at one end, and a plurality of equally spaced teeth 6.5 are provided on the fourth blocking portion 6.4. A driving groove 6.6 for driving an external tool is provided on the end surface of the drive shaft 6 away from the transmission seat 9. The driving groove 6.6 can be in the shape of a straight line, a cross, a rice shape, a square or a polygon, etc., which can be used for docking and transmission of external tools. A accommodating chamber 5.3 is provided in the connecting portion 5.1. The end of the accommodating chamber 5.3 away from the end of the end cover 5 is an open structure, and the open structure can allow the drive shaft 6 to penetrate. A through hole 5.4 connected to the accommodating chamber 5.3 is provided on the end cover 5. The through hole 5.4 can allow the end of the drive shaft 6 to be exposed to facilitate the docking of external tools with the driving groove 6.6. The transition between the accommodating chamber 5.3 and the through hole 5.4 is shaped The fifth stop portion 5.5 is formed, and the fifth stop portion 5.5 is used to resist the fourth stop portion 6.4. The fifth stop portion 5.5 is provided with a convex tooth 5.6 that meshes with the latch 6.5 to limit the radial free rotation of the drive shaft 6. The engagement of the latch 6.5 with the convex tooth 5.6 can lock the drive shaft 6. The limit stop sleeve 8 is engaged with the open structure of the accommodating chamber 5.3. The outer wall of the limit stop sleeve 8 is provided with two symmetrical blocks 8.1. The inner wall of the accommodating chamber 5.3 is provided with a bayonet 5.7 that cooperates with the blocks 8.1. The cooperation between the blocks 8.1 and the bayonet 5.7 can fix the limit stop sleeve 8 on the connecting portion 5.1. The limit stop sleeve 8 is sleeved on the drive shaft 6, and the drive shaft 6 can rotate relative to the limit stop sleeve 8. The spring 7 is provided in the accommodating chamber 5.3 and sleeved onto the drive shaft 6. One end of the spring 7 abuts the end of the limit stop sleeve 8, and the other end abuts the third stop portion 6.3. In its natural state, the spring 7 pushes the drive shaft 6 outward, causing the latching teeth 6.5 to engage with the protruding teeth 5.6, locking the drive shaft 6 and thus the reel 4. When an external force pushes the drive shaft 6 inward, causing the latching teeth 6.5 to disengage from the protruding teeth 5.6, the drive shaft 6 is unlocked. The external force rotates the drive shaft 6, driving the transmission seat 9 to rotate, thereby driving the reel 4 to rotate and retract the lower end of the curtain body 3 to adjust the length of the curtain body 3 when it is unfolded.

[0048] Example 2

[0049] Referring to Figures 1-4 and 12, as another preferred embodiment, the end cap 5 at one end of the lower beam 2 is provided with a control component for adjusting the reel 4, the control component is a columnar adjustment shaft 10, the adjustment shaft 10 and the end cap 5 are integrally formed, the adjustment shaft 10 is plugged into the reel 4, the outer peripheral wall of the adjustment shaft 10 is provided with a plurality of convex rails 10.1 arranged at equal intervals, the reel 4 is provided with a concave rail 4.2 that cooperates with the convex rail 10.1, the end cap 5 at the other end of the lower beam 2 is provided with a connecting shaft 5.2 for connecting the reel 4, the reel 4 can be relatively When the connecting shaft 5.2 rotates and the reel 4 is adjusted, the end cover 5 with the adjusting shaft 10 is removed from the lower beam 2, and then the adjusting shaft 10 is plugged into the reel 4. At this time, the end cover 5 is disengaged from the lower beam 2, and the end cover 5 can be rotated freely. The end cover 5 rotates together with the adjusting shaft 10, and the adjusting shaft 10 links the reel 4 to rotate the lower end of the curtain body 3 to adjust the unfolded length of the curtain body 3. After adjusting to the appropriate position, the end cover 5 is inserted back into the lower beam 2. At this time, the end cover 5 is fixedly plugged in and cannot rotate. The adjusting shaft 10 is inserted into the reel 4, thereby locking the reel 4 and playing a positioning role.

[0050] Dimming method of embodiment 1

[0051] Refer to Figure 1-11, which includes the following steps:

[0052] S1. Rotate the reel 1 to roll the curtain body 3 downward to a fully extended state. At this time, the curtain body 3 is in a light-transmitting state, the front piece 3.1 and the rear piece 3.2 are separated front and back, and the connecting piece 3.3 is vertically connected between the front piece 3.1 and the rear piece 3.2. Then, the lower end of the curtain body 3 is rolled up by rotating the reel 4, so that the lower beam 2 moves upward along the lower end of the curtain body 3. Then, by locking the reel 4, the lower beam 2 can stay at any position within the extended length range of the curtain body 3, thereby adjusting the extended length of the curtain body 3, so that the Shangri-La curtain can arbitrarily adjust the window covering area in the light-transmitting state;

[0053] S2, rotate the reel 1 to roll up the curtain body 3 downward for a certain length, at this time the curtain body 3 is still in the light-blocking state, the front piece 3.1 and the back piece 3.2 are in contact, and the connecting piece 3.3 is vertically clamped between the front piece 3.1 and the back piece 3.2, and then the lower end of the curtain body 3 is rolled up by rotating the reel 4, so that the lower beam 2 moves upward along the lower end of the curtain body 3, first adjusting the length of the curtain body 3 for a certain length, then locking the reel 4 and continuing to rotate the reel 1 to roll up the curtain body 3 downward until it is fully unfolded, at this time the curtain body 3 is in the light-transmitting state, the front piece 3.1 and the back piece 3.2 are separated front and back, and the connecting piece 3.3 is vertically connected between the front piece 3.1 and the back piece 3.2, so that the Shangri-La curtain can arbitrarily adjust the area of ​​the window to be blocked in the light-transmitting state;

[0054] S3. You can choose step S1 or step S2 to adjust the length of the curtain body 3 when it is unfolded, so that the Shangri-La curtain can arbitrarily adjust the area of ​​the window to be covered in the light-transmitting state.

[0055] Among them, the arbitrarily adjusted window blocking area can be complete blocking or partial blocking, and the curtain body 3 length can be adjusted from bottom to top when the Shangri-La curtain is in a light-transmitting state, thereby adjusting the window blocking area of ​​the Shangri-La curtain without affecting the light-transmitting state of the Shangri-La curtain. The operation is simple, and the above effect can be achieved by adjusting the roller 4.

[0056] Among them, the step of rotating the reel 4 in steps S1 and S2 is to push the drive shaft 6 by an external tool to overcome the elastic force of the spring 7 and move inward, so that the latching teeth 6.5 are disengaged from the convex teeth 5.6, unlocking the drive shaft 6, and then rotating the drive shaft 6 by the external tool. The drive shaft 6 drives the transmission seat 9 to rotate the reel 4, and the reel 4 reels the curtain body 3. The step of locking the reel 4 in steps S1 and S2 is to remove the external tool, and the drive shaft 6 moves outward under the action of the elastic force of the spring 7, so that the latching teeth 6.5 engage with the convex teeth 5.6 to lock the drive shaft 6, thereby locking the reel 4.

[0057] Dimming method of embodiment 2

[0058] Referring to Figures 1-4 and 12, the steps are the same as S1, S2, and S3 in the dimming method of Example 1. The difference is that the step of rotating the reel 4 in steps S1 and S2 is to pull out the end cover 5 with the adjusting shaft 10 at the end of the lower beam 2, so that the adjusting shaft 10 on the end cover 5 is partially plugged into the reel 4, and then the end cover 5 is rotated to drive the reel 4 to rotate through the adjusting shaft 10, and the reel 4 reels the curtain body 3. The step of locking the reel 4 in steps S1 and S2 is to insert the end cover 5 back into the end of the lower beam 2, and the end cover 5 is fixed to the end of the lower beam 2. At this time, the adjusting shaft 10 is plugged into the reel 4, thereby locking the reel 4.

[0059] Unless otherwise specified, the materials, reagents, and experimental equipment involved in the embodiments of the present invention are all commercially available products in the curtain field.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A Shangri-La curtain, characterized in that: The invention comprises a roller (1), a lower beam (2), and a curtain body (3) whose upper end is connected to the roller (1) and whose lower end is connected to the lower beam (2); the curtain body (3) comprises a front piece (3.1), a rear piece (3.2), and a plurality of connecting pieces (3.3) connected between the front piece (3.1) and the rear piece (3.2) at equal intervals; a rotatable roller (4) is arranged inside the lower beam (2); the lower end of the curtain body (3) is connected to the roller (4); the roller (4) rotates to retract and release the lower end of the curtain body (3) to adjust the length of the curtain body (3) when it is unfolded.

2. A Shangri-La curtain according to claim 1, characterized in that: The upper end of the front sheet (3.1) is connected to the reel (1), the lower end of the front sheet (3.1) is connected to the reel (4), the upper end of the rear sheet (3.2) is connected to the reel (1), the lower end of the rear sheet (3.2) is connected to the reel (4), and the connection positions of the upper end of the front sheet (3.1) and the upper end of the rear sheet (3.2) and the reel (1) do not overlap.

3. The Shangri-La curtain according to claim 1, characterized in that: The lower beam (2) is provided with an installation cavity (2.1) for accommodating a reel (4), the installation cavity (2.1) passing through both ends of the lower beam (2) along the length direction, and the top of the lower beam (2) is provided with a long opening (2.2) for the curtain body (3) to pass through but not for the reel (4) to pass through, and the long opening (2.2) is communicated with the installation cavity (2.1).

4. The Shangri-La curtain according to claim 1, characterized in that: End covers (5) are provided at both ends of the lower beam (2); a control component for adjusting the reel (4) is provided on the end cover (5) at least at one end; the control component is used to adjust the reel (4) to rotate and retract the lower end of the curtain body (3) under the action of an external force; and the control component is used to lock the reel (4) in a natural state to limit the free rotation of the reel (4).

5. The Shangri-La curtain according to claim 4, characterized in that: A control assembly for adjusting the reel (4) is provided on the end cover (5) at one end of the lower beam (2); a connecting portion (5.1) for connecting the control assembly is provided on a side of the end cover (5) facing the reel (4); a connecting shaft (5.2) for connecting the reel (4) is provided on the end cover (5) at the other end of the lower beam (2); the reel (4) can rotate relative to the connecting shaft (5.2); and the control assembly comprises a drive shaft (6), a spring (7), a limit stop sleeve (8) and a transmission seat (9).

6. The Shangri-La curtain according to claim 5, characterized in that: The transmission seat (9) comprises a first connecting part (9.1) and a second connecting part (9.2) in a cylindrical shape. The first connecting part (9.1) is plugged into the connecting part (5.1) and can rotate relative to the connecting part (5.1). The second connecting part (9.2) is plugged into the reel (4) and can drive the reel (4) to rotate synchronously. The limit stop sleeve (8) is clamped with one end of the connecting part (5.1) facing the reel (4). The spring (7) is arranged in the connecting part (5.1) and sleeved on the driving shaft (6). The driving shaft (6) passes through the transmission seat (9), the limit stop sleeve (8) and the second connecting part (9.2) in sequence from the inside to the outside. A stopper sleeve (8), a spring (7), and a connecting portion (5.1), wherein one end of the spring (7) abuts against the limit stopper sleeve (8), and the other end abuts against the drive shaft (6), and the drive shaft (6) is transmission-connected to a transmission seat (9). In a natural state, the spring (7) pushes the drive shaft (6) outward to lock the drive shaft (6), thereby locking the reel (4). When an external force pushes the drive shaft (6) inward, the external force overcomes the elastic force of the spring (7) to unlock the drive shaft (6) and rotate the drive shaft (6) to drive the transmission seat (9) to rotate, thereby driving the reel (4) to rotate the lower end of the retractable curtain body (3) to adjust the unfolded length of the curtain body (3).

7. The Shangri-La curtain according to claim 6, characterized in that: The outer diameter of the first connecting part (9.1) is greater than the outer diameter of the second connecting part (9.2); a first cavity (9.3) communicating with the outside is provided in the first connecting part (9.1); the first cavity (9.3) is sleeved with the connecting part (5.1); a second cavity (9.4) communicating with the first cavity (9.3) is provided in the second connecting part (9.2); a plurality of convex ridges (9.6) arranged at equal intervals are provided in the second cavity (9.4); a plurality of card slots (9.5) arranged at equal intervals are provided on the outer surface of the second connecting part (9.2); a card strip (4.1) cooperating with the card slot (9.5) is provided in the reel (4); the first connecting part (9.1) and the second connecting part (9.2) are connected to each other. 2) forms a first blocking portion (9.7) at the transition point of the outer surface, the first blocking portion (9.7) is in blocking contact with the end of the reel (4), and a second blocking portion (9.8) is formed at the transition point of the inner surface of the first cavity (9.3) and the second cavity (9.4), and one end of the drive shaft (6) extending into the transmission seat (9) is provided with a groove (6.1) that cooperates with the convex ridge (9.6) in the second cavity (9.4), and the drive shaft (6) is used to drive the transmission seat (9) to rotate, thereby driving the reel (4) to rotate, and the end of the drive shaft (6) away from the transmission seat (9) is provided with a radially expanded convex ring (6.2), and the convex ring (6.2) is facing the end of the transmission seat (9) to form a third blocking portion (6.3), and the convex ring (6.2) A fourth blocking portion (6.4) is formed at the end away from the transmission seat (9), and a plurality of latching teeth (6.5) arranged at equal intervals are provided on the fourth blocking portion (6.4). A driving groove (6.6) for driving an external tool is provided on the end surface of the end of the driving shaft (6) away from the transmission seat (9). A receiving cavity (5.3) is provided in the connecting portion (5.1). The end of the receiving cavity (5.3) away from the end cover (5) is an open structure, and the driving shaft (6) can be inserted into the open structure. A through hole (5.4) connected to the receiving cavity (5.3) is provided on the end cover (5). The through hole (5.4) can allow the end of the driving shaft (6) to be exposed so as to facilitate the external tool to dock with the driving groove (6.6). The receiving cavity (5.3) and the through hole (5.4) are connected to each other. A fifth stopper (5.5) is formed at the transition of the hole (5.4), and the fifth stopper (5.5) is used to resist the fourth stopper (6.4). The fifth stopper (5.5) is provided with a convex tooth (5.6) meshing with the clamping tooth (6.5) to limit the radial free rotation of the drive shaft (6). The limit stopper sleeve (8) is clamped with the open structure of the accommodating chamber (5.3). Two symmetrical clamping blocks (8.1) are provided on the outer wall of the limit stopper sleeve (8), and a bayonet (5.7) matching with the clamping blocks (8.1) is provided on the inner wall of the accommodating chamber (5.3). The limit stopper sleeve (8) is sleeved on the drive shaft (6), and the drive shaft (6) can rotate relative to the limit stopper sleeve (8). The spring (7) is arranged in the accommodating chamber (5.3).3) and is sleeved on the drive shaft (6), one end of the spring (7) abuts against the end of the limit stop sleeve (8), and the other end abuts against the third stop portion (6.3). In a natural state, the spring (7) pushes the drive shaft (6) outward so that the latching teeth (6.5) engage with the convex teeth (5.6) to lock the drive shaft (6), thereby locking the reel (4). When an external force pushes the drive shaft (6) inward so that the latching teeth (6.5) and the convex teeth (5.6) are disengaged, the drive shaft (6) is unlocked, and the external force rotates the drive shaft (6) to drive the transmission seat (9) to rotate, thereby driving the reel (4) to rotate the lower end of the curtain body (3) to adjust the length of the curtain body (3) when it is unfolded.

8. The Shangri-La curtain according to claim 4, characterized in that: A control component for adjusting the reel (4) is provided on the end cover (5) at one end of the lower beam (2), the control component is a columnar adjustment shaft (10), the adjustment shaft (10) and the end cover (5) are integrally formed, the adjustment shaft (10) is plugged into the reel (4), a plurality of convex rails (10.1) arranged at equal intervals are provided on the outer peripheral wall of the adjustment shaft (10), a concave rail (4.2) matched with the convex rail (10.1) is provided inside the reel (4), and a connecting shaft (5.2) for connecting the reel (4) is provided on the end cover (5) at the other end of the lower beam (2), the reel (4) can rotate relative to the connecting shaft (5.2).

9. A dimming method for Shangri-La curtains as claimed in claim 7 or 8, characterized in that: The steps include: S1. Rotate the reel (1) to roll the curtain body (3) downward to a fully unfolded state. At this time, the curtain body (3) is in a light-transmitting state, and the front piece (3.1) and the rear piece (3.2) are separated from each other. The connecting piece (3.3) is vertically connected between the front piece (3.1) and the rear piece (3.2), and then the lower end of the curtain body (3) is retracted and released by rotating the reel (4), so that the lower beam (2) moves upward along the lower end of the curtain body (3), and then the reel (4) is locked so that the lower beam (2) can stay at any position within the extended length range of the curtain body (3), thereby adjusting the extended length of the curtain body (3), so that the Shangri-La curtain can arbitrarily adjust the area of ​​the window to be blocked in the light-transmitting state; S2, rotating the reel (1) to roll the curtain body (3) downward for a certain length, at which time the curtain body (3) is still in a light-shielding state, the front piece (3.1) and the rear piece (3.2) are in contact, the connecting piece (3.3) is vertically clamped between the front piece (3.1) and the rear piece (3.2), and then the lower end of the curtain body (3) is retracted and released by rotating the reel (4), so that the lower beam (2) moves upward along the lower end of the curtain body (3), first adjusting the length of the curtain body (3) for a certain length, then locking the reel (4) and continuing to rotate the reel (1) to roll the curtain body (3) downward to a fully unfolded state, at which time the curtain body (3) is in a light-transmitting state, the front piece (3.1) and the rear piece (3.2) are in a front-to-back separated state, and the connecting piece (3.3) is vertically connected between the front piece (3.1) and the rear piece (3.2), so that the Shangri-La curtain can arbitrarily adjust the area of ​​the window to be blocked in the light-transmitting state; S3. Step S1 or step S2 can be selected to adjust the unfolded length of the curtain body (3), so that the Shangri-La curtain can arbitrarily adjust the area of ​​the window to be blocked in the light-transmitting state.

10. The Shangri-La curtain dimming method according to claim 9, characterized in that: The step of rotating the reel (4) in the steps S1 and S2 is to push the drive shaft (6) by an external tool to overcome the elastic force of the spring (7) and move inward, so that the latching teeth (6.5) and the convex teeth (5.6) are disengaged, and the drive shaft (6) is unlocked, and then the drive shaft (6) is rotated by the external tool, and the drive shaft (6) drives the transmission seat (9) to rotate the reel (4), and the reel (4) retracts and releases the curtain body (3). The step of locking the reel (4) in the steps S1 and S2 is to remove the external tool, and the drive shaft (6) moves outward under the action of the elastic force of the spring (7), so that the latching teeth (6.5) and the convex teeth (5.6) are engaged and locked to the drive shaft (6), thereby locking the reel (4).

11. The Shangri-La curtain dimming method according to claim 9, characterized in that: The step of rotating the reel (4) in the steps S1 and S2 is to pull out the end cover (5) with the adjustment shaft (10) at the end of the lower beam (2) so that the adjustment shaft (10) on the end cover (5) is partially plugged into the reel (4), and then the end cover (5) is rotated to drive the reel (4) to rotate through the adjustment shaft (10), and the reel (4) retracts and releases the curtain body (3). The step of locking the reel (4) in the steps S1 and S2 is to insert the end cover (5) back into the end of the lower beam (2), and at this time, the adjustment shaft (10) is plugged into the reel (4), thereby locking the reel (4).

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