A roller blind

Abstract

The present disclosure relates to a roller shade comprising a roller and a shade material, further comprising an upward guide device; the upward guide device comprises a guide assembly; a first side edge of the shade material is wound on the roller, and a second side edge is opposite to the first side edge; the second side edge goes over the guide assembly upwardly so that the shade material is hung on the guide assembly, forming a balance structure with the guide assembly as a fulcrum. The roller shade of the present disclosure solves the problem of pleating of the shade material through the guide device.

Description

Technical Field

[0001] This invention belongs to the field of decoration and renovation, and relates to a roller blind. Background Technology

[0002] Roller blinds are categorized into two types based on the force used for unwinding: self-weight unwinding (or simply gravity unwinding) and traction unwinding. Traction unwinding involves providing traction force to pull the blind fabric unwind. Regardless of whether it's self-weight unwinding or traction unwinding, wrinkles are likely to occur in the blind fabric during the winding process, and the heavier and wider the blind fabric, the more prone it is to wrinkling. For example, extra-wide roller blinds that unwind due to their own weight typically have two support rods holding the roller with the blind fabric. The blind fabric (such as curtain cloth) wound on the roller will develop two indentations due to the long-term pressure on the support rods. Furthermore, because the blind fabric is soft, many individual indentations will appear on the blind fabric after unwinding. In addition, during winding, the curtain material in contact with the support rod is sandwiched between the support rod and the curtain material wound on the roller. If the force on the support rod is not exactly the same at different points, even a slight deviation will cause the pressure on the curtain material in contact with the support rod to be different. As a result, the tightness of the curtain material when winding on the roller will be different, which can easily cause wrinkling and pleating, affecting the flatness of the curtain material.

[0003] Even without support rods, during winding, because the roller rests on roller supports at both ends, the weight of the curtain fabric combined with the weight of the roller easily causes the middle section of the roller to bend downwards. Therefore, the curtain fabric's fit on the roller is generally tight at both ends, but uneven in the middle (i.e., some areas of the 360° circumference in the middle section are tightly fitted, while others are insufficiently fitted; due to gravity, the lower half of the circumference is often less fitted than the upper half). The curtain fabric easily wrinkles in these insufficiently fitted areas. After the roller rotates 180°, the upper and lower halves of the circumference are reversed, causing the previously well-fitted areas to be rolled with a layer of less-fitted fabric, and vice versa. As the number of rotations increases, wrinkles will appear in these areas. For example, the wrinkles in curtain fabric typically appear as honeycomb-like patterns. As the honeycomb-like wrinkles increase, the section of the roller wound around the fabric becomes thicker than other sections, increasing the tension on the fabric. When this tension exceeds the supporting force of the honeycomb wrinkles, they are compressed, increasing the thickness in that area. As the difference in fabric diameter between the honeycomb section and other parts of the roller widens, striped wrinkles appear on the fabric, extending in a spiral pattern towards both ends of the roller.

[0004] Roller blinds that are pulled and unrolled typically have: a Full Gear Synchronous System (FGS), a dual-motor Fabric Tension System (FTS), or a single-motor Fabric Spring System (FSS). Skylight blinds may also incorporate elastic material compensation systems such as gas springs, torsion springs, tension springs, and elastic bands. However, like self-weight roller blinds, traction-based roller blinds in existing technology are prone to fabric pleating during rewinding, and the pleating problem is more severe the wider the blind, thus limiting its width and making it difficult to manufacture ultra-wide roller blinds. Summary of the Invention

[0005] To address the problem of curtain fabric pleating, this disclosure relates to a roller blind, including a roller and curtain fabric, and further including an upward guiding device; the upward guiding device includes a guiding assembly; a first side of the curtain fabric is rolled onto the roller, and a second side is opposite to the first side; the second side extends upward over the guiding assembly so that the curtain fabric hangs on the guiding assembly, forming a balance structure with the guiding assembly as the fulcrum. By setting the guiding assembly, the roller is prevented from bending downwards in the middle section due to excessive weight of the curtain fabric, thereby preventing the curtain fabric from pleating on the downward-bending roller to a certain extent.

[0006] In some implementations, the roller blind is configured such that, for at least a certain period during the rolling process, the highest point of the guide assembly is higher than the highest point of the curtain material wound on the roller. This allows the balance structure, with the guide assembly as its fulcrum, to apply an upward force to the roller through the curtain material, regardless of whether the curtain material is wound clockwise or counterclockwise. When this upward force is sufficiently large, the roller can be pulled up, raising the horizontal position of the roller's axis. Raising the horizontal position of the roller's axis further avoids the problem of curtain pleating. For example, it prevents the curtain material in roller blinds with support rods from being sandwiched between the support rods and the curtain material wound on the roller, forming indentations, and reduces or eliminates friction between the curtain material and the support rods during rolling. Even in roller blinds without support rods, raising the horizontal position of the roller's axis helps keep the roller flat and prevents it from bending downwards, resulting in a smoother curtain material.

[0007] In some implementations, the guide assembly is rod-shaped with its upper surface arched upwards in its longitudinal section. This facilitates applying a greater upward force to the middle section of the spool than to its ends, thereby further preventing the middle section of the spool from bending downwards; it also avoids the risk of the guide assembly bending downwards in the middle section that may occur with guide assemblies having a straight upper surface (e.g., a cylindrical guide assembly with a uniform cross-sectional diameter). In this document, "rod-shaped" refers to a generally rod-shaped configuration and does not limit its cross-sectional diameter and shape to be uniform.

[0008] In some implementations, the upward guide device also includes a support member; the support member is connected to the guide assembly to support the guide assembly.

[0009] In some embodiments, the support partially surrounds the roll and is capable of accommodating the roll with the cord material wound in the wound state; the guide assembly is disposed on the support and protrudes from or flush with the outer periphery of the support; the number of guide assemblies is at least one; the number of supports is at least one.

[0010] In some embodiments, there are multiple guide components, all located on the outer periphery of the support member, so that the curtain material partially surrounds the support member when unrolled. In some embodiments, the guide components are integrally formed with the support member.

[0011] In some embodiments, the guiding assembly includes a guide member; the spool contacts the guide member through the cord fabric, causing the cord fabric not wound on the spool to exert an upward force on the spool. Furthermore, the guide member can be of various shapes, such as rod-shaped, spherical, sheet-shaped, etc.

[0012] In some implementations, the guide assembly has multiple guide elements; the multiple guide elements may be connected end to end, or not connected end to end, or partially connected end to end and partially not connected end to end.

[0013] In some implementations, the guide assembly has a guide member whose length may be greater than, equal to or less than the length of the reel.

[0014] In some implementations, the guide assembly also includes connectors; there are at least two guides connected to each other by connectors, and the guides connected together by connectors are rod-shaped as a whole.

[0015] In some implementations, the guide members connected together by connectors are rod-shaped as a whole, and the upper surface of its longitudinal section arches upward.

[0016] In some embodiments, the connector includes a driving connector and / or a non-driving connector; the driving connector transmits rotational force between the two guides it connects to achieve synchronous rotation of the two guides; the non-driving connector blocks the transmission of rotational force between the two guides it connects to.

[0017] In some embodiments, the connecting member includes a non-transmission connecting member; the non-transmission connecting member includes a first bearing, a second bearing, a first bearing housing, a first connecting shaft, and a second connecting shaft; the first bearing housing is disposed on the support member, the outer rings of the first bearing and the second bearing are both disposed on the first bearing housing, the first connecting shaft is disposed in the inner ring of the first bearing and connected to the first end of the guide member, the second connecting shaft is disposed in the inner ring of the second bearing and connected to the second end of the guide member, the first connecting shaft and the second connecting shaft located in the same first bearing housing are separate from each other and do not transmit power to each other; the support member supports the guide assembly by connecting to the first bearing housing.

[0018] In some embodiments, the connecting member includes a transmission connecting member; the transmission connecting member includes a fourth bearing, a fifth bearing, a second bearing housing, a third connecting shaft, and a fourth connecting shaft; the second bearing housing is disposed on the support member, the outer rings of the fourth bearing and the fifth bearing are both disposed on the second bearing housing, the third connecting shaft is disposed in the inner ring of the fourth bearing and connected to the first end of the guide member, the fourth connecting shaft is disposed in the inner ring of the fifth bearing and connected to the second end of the guide member, and the third connecting shaft and the fourth connecting shaft located in the same second bearing housing are connected to each other for transmission; the support member supports the guide assembly by connecting to the second bearing housing.

[0019] In some implementations, the guide assembly is connected to a first end of the support member. The outer periphery of the support member includes the first end of the support member, so the connection between the guide assembly and the first end of the support member protrudes beyond the outer periphery of the support member. Furthermore, the first end of the support member is closer to the mounting surface than the roller, and the front side of the curtain material contacts the guide assembly, thereby achieving a closer fit of the curtain material to the mounting surface.

[0020] In other embodiments, the reel is closer to the mounting surface than the first end of the support.

[0021] In some implementations, the support member has a second friction area on its top inner side.

[0022] In some implementations, the second friction region exists in one or more forms of friction plates, friction beads, friction rods, and friction tubes.

[0023] In some implementations, the roller blind also includes a power source, a roller support, and a suspension assembly; the roller is driven to the power source; the roller support is connected to the fixed shaft of the power source via the suspension assembly; the suspension assembly includes a third bearing and a limiting member; the inner ring of the third bearing is disposed at the end of the fixed shaft, and the outer ring is disposed on the limiting member and can be driven to rotate up and down along the limiting member when the balance structure with the guide assembly as the fulcrum is unbalanced, causing the roller to move up and down.

[0024] In some implementations, the power source is located inside the reel.

[0025] In some implementations, the power source may be an electric power source and / or a manual power source.

[0026] In some implementations, the surface of the guide assembly has a first friction area for providing friction to the curtain material it contacts.

[0027] In some implementations, the first friction region exists in one or more forms selected from friction plates, friction beads, friction rods, and friction tubes. In this document, both the first and second friction regions can have their frictional force adjusted by selecting different materials or forms; this can either increase or decrease the frictional force.

[0028] In some embodiments, the upward guiding device further includes a damping assembly; the damping assembly includes a damping seat, a damping plate, and a damping adjustment member; the damping seat is disposed on the outer periphery of the support member; the damping plate is disposed between the damping seat and the guiding assembly; the damping adjustment member is connected to the damping plate, and adjusts the degree to which the damping plate squeezes the guiding assembly by adjusting the force applied to the damping plate, thereby adjusting the rotational speed of the guiding assembly driven by the curtain material, and thus adjusting the magnitude of the frictional force between the first friction area and the curtain material.

[0029] In some implementations, the damping components are movably connected to the support, allowing multiple damping components to be installed on the support as needed.

[0030] In some implementations, the outer ring of the third bearing is disposed on the limiting member by means of method 1) and / or method 2): Method 1) A groove is provided on the circumference of the outer ring of the third bearing to span the track of the limiting member so that the third bearing can rotate up and down along the limiting member; Method 2) The outer ring of the third bearing is embedded in the concave track of the limiting member so that the third bearing can rotate up and down along the limiting member.

[0031] In some implementations, there are two suspension components, located at both ends of the fixed axis.

[0032] In some implementations, the suspension assembly further includes a third bearing housing; the fixed shaft is connected to the inner ring of the third bearing via the third bearing housing; the third bearing housing is connected to at least one inner ring of the third bearing.

[0033] In some implementations, the suspension assembly also includes a positioning adjuster; the positioning adjuster is connected to the reel to limit the descent of the reel.

[0034] In some implementations, the positioning adjuster includes an elastic element. Further, the elastic element is a spring; the spring is a tension spring and / or a compression spring. If the power source is only present at one end of the reel, then only a tension spring needs to be provided at the end with the power source to pull up the power source by its own weight.

[0035] In some implementations, the positioning adjuster includes a set screw and a positioning adjustment element; the positioning adjustment element is used to adjust the length of the set screw; the set screw is connected to the reel to prevent the reel from descending further when the reel descends to a preset value.

[0036] In some implementations, the roller blind also includes a roller support; the roller support is used to support the roller and guide assembly and is integrally formed with the support.

[0037] In some implementations, the roller blind also includes a counterweight bottom rail for adjusting the counterweight; the counterweight bottom rail is located on the second side of the curtain material. For example, the counterweight can be adjusted by adjusting the counterweight blocks on the counterweight bottom rail, or by replacing the counterweight bottom rail with a different one.

[0038] In some implementations, the front or back of the curtain material contacts the guide assembly.

[0039] In some embodiments, the roller blind also includes a deflector for bringing the curtain material close to the mounting surface; the contact surface between the deflector and the curtain material is the back side of the contact surface between the guide assembly and the curtain material, that is, when the front side of the curtain material contacts the guide assembly, the deflector contacts the back side of the curtain material; when the back side of the curtain material contacts the guide assembly, the deflector contacts the front side of the curtain material.

[0040] Generally, if the front of the curtain fabric contacts the guide assembly, the unrolled curtain fabric will be close to the mounting surface. However, in this case, the support member and the roller bracket are integrally formed and located outside the width of the curtain fabric, which limits the width unless the guide assembly is connected to the first end of the support member, and the first end of the support member is closer to the mounting surface than the roller and the front of the curtain fabric contacts the guide assembly.

[0041] Generally, if the reverse side of the roller blind fabric contacts the guide assembly, the distance between the unrolled fabric and the mounting surface is greater than or equal to the distance from the farthest end of the support to the mounting surface. Adding a deflector allows roller blinds where the reverse side of the fabric contacts the guide assembly to also achieve close proximity of the fabric to the mounting surface.

[0042] In some implementations, the roller blind also includes side rails and anti-disengagement fasteners; the side rails are located on both sides of the area to be covered by the roller blind; the anti-disengagement fasteners are located on both sides of the curtain material and can slide along the side rails.

[0043] In some implementations, during unwinding, the direction of the curtain fabric unfolding is below (or flush with) the horizontal line where the highest point of the guide assembly is located; the roller blind also includes a power source, a length limiting positioning element, and a tensioning device. The length limiting positioning element, which limits the unwinding length of the curtain fabric, includes positioning rollers. The tensioning device includes a transmission element and a transmission wheel assembly; the transmission wheel assembly includes a transmission wheel, a pawl, and a pawl support shaft; the transmission element is annular and surrounds the transmission wheel and the positioning rollers. The power source is connected to the reel drive, and the reel is connected to the transmission component through the transmission wheel assembly, so that the transmission component can rotate with the reel; the reel is also connected to the transmission component through the curtain material; The tensioning device also includes a synchronization device assembly; the synchronization device assembly includes a housing, a friction assembly, and a rotating shaft; the housing of the synchronization device assembly is connected to the reel in a driving connection; the rotating shaft of the synchronization device assembly is connected to the transmission component in a driving connection via a transmission wheel assembly. The friction assembly includes a first friction ring and a second friction ring; a rotating shaft passes through the first and second friction rings; a second linkage component matching the outer contour of the rotating shaft is provided on the inner ring contour of the second friction ring, so that the second friction ring rotates synchronously with the rotating shaft; the first friction ring is close to the second friction ring, and the friction between the two drives the first friction ring and the second friction ring to rotate in the same direction; a first linkage component matching the inner wall of the outer shell is provided on the outer ring contour of the first friction ring, so that the outer shell rotates synchronously with the first friction ring. The drive wheel is a ratchet gear; the ratchet teeth are arranged in the same direction of rotation around the inner circumference of the ratchet gear, the front end of the pawl is placed inside the ratchet teeth, and the root of the pawl is located on the outer circumference of the pawl support shaft; the drive wheel assembly is configured such that when the rotation direction of the pawl support shaft is the same as the tilt direction of the ratchet teeth, the pawl engages with the ratchet teeth, pushing the ratchet gear and the pawl support shaft to rotate synchronously in the same direction; when the rotation direction of the pawl support shaft is opposite to the tilt direction of the ratchet teeth, the pawl slips inside the ratchet teeth, and the ratchet gear does not rotate synchronously with the pawl support shaft; the drive wheel assembly only slips when rotating in the winding direction, and when rotating in the unwinding direction, the pawl and the ratchet teeth are engaged, pushing the ratchet gear to rotate; the pawl support shaft is connected to the rotating shaft. The tensioning device has the function of keeping the curtain material taut, flat, and preventing sagging during unwinding, especially for roller blinds where the curtain material unfolds in a non-vertical downward direction during unwinding.

[0044] The roller blind disclosed herein solves the problem of fabric pleating through a guiding device. During winding, the fabric, guided upwards by the upward guiding device, applies an upward pull to the roller. This upward pull completely or partially offsets the weight of the roller, reducing or completely overcoming the problem that the lower half of the roller's circumference is less adherent to the fabric than the upper half due to gravity, thus ensuring the fabric adheres more evenly and tightly to the roller's circumference. As the number of winding turns increases, the fabric (e.g., curtain cloth) adheres firmly layer by layer, ensuring that the fabric wound on the roller is free of wrinkles and pleats. When the upward pull applied to the roller by the upward guiding device is sufficiently large, so that the roller support does not require support, the roller is in a suspended state.

[0045] The various embodiments disclosed herein achieve similar or identical effects by adjusting the friction between the curtain material and the guide assembly, thereby raising the horizontal position of the roller shaft using a balance structure with the guide assembly as a fulcrum. Other embodiments achieve similar or identical effects by adjusting the counterweight. The friction can be adjusted by using materials with different coefficients of friction, through damping components, and by adjusting the distance and direction between the guide assembly and the roller shaft. The semi-enclosed roller shaft by the support component ensures that its support for the guide assembly is not limited to the width of the curtain material, resulting in more robust support and allowing for a sufficiently large roller blind width to meet the width requirements of different installation surfaces, such as a large glass curtain wall or a large glass roof. The suspended state of the roller shaft during winding facilitates the even and smooth winding of the curtain material onto the shaft. Therefore, the roller blind of this disclosure offers a superior user experience and is widely applicable to various scenarios requiring roller blind installation, including ceilings, slopes, and facades.

[0046] The above description is merely an overview of the embodiments disclosed herein. The following will further explain the concept, specific structure, and resulting technical effects of this disclosure in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of the structure of the roller blind described in Example 1.

[0049] Figure 2 This is a structural schematic diagram illustrating the positional relationship between the head and tail of the guide members within the guide assembly in Embodiment 1. The diagram omits structures such as the curtain material and elastic elements.

[0050] Figure 3 This is a schematic diagram of a partial structure of the roller shutter described in Embodiment 1. The elastic element is omitted in this figure.

[0051] Figure 4 This is a schematic diagram of the cross-sectional structure of the roller blind described in Example 1.

[0052] Figure 5 This is a partial structural diagram of the side of the roller blind described in Embodiment 1.

[0053] Figure 6 This is a structural diagram illustrating the positional relationship between the support member, damping component, and guide member in Embodiment 1.

[0054] Figure 7 yes Figure 6 A three-dimensional view of the structure shown.

[0055] Figure 8 This is an exploded view of the transmission connection component.

[0056] Figure 9 This is an exploded view of a non-transmission connecting component.

[0057] Figure 10 This is a schematic diagram of the cross-sectional structure of the roller blind described in Example 2.

[0058] Figure 11 This is a schematic diagram of the cross-sectional structure of the roller blind described in Example 3.

[0059] Figure 12 This is a schematic diagram of the cross-sectional structure of the roller blind described in Example 4.

[0060] Figure 13 This is a partial structural cross-sectional schematic diagram of the roller blind described in Example 5.

[0061] Figure 14 This is an exploded view of the roller shutter described in Example 5.

[0062] Figure 15 This is a partial structural cross-sectional schematic diagram of the roller blind described in Example 6.

[0063] Figure 16 This is an exploded view of the roller shutter described in Example 6.

[0064] Figure 17 This is a partial structural cross-sectional schematic diagram of the roller blind described in Example 7.

[0065] Figure 18 This is a partial structural schematic diagram of the roller blind described in Example 7. The curtain material is omitted in this diagram to show the internal structure.

[0066] Figure 19 This is a partial structural cross-sectional schematic diagram of the roller blind described in Example 8.

[0067] Figure 20 This is a partial structural schematic diagram of the roller blind described in Example 8. The curtain material is omitted in this diagram to show the internal structure.

[0068] Figure 21 This is a partial structural cross-sectional schematic diagram of the roller blind described in Example 9.

[0069] Figure 22 This is a schematic diagram of the synchronization device component in Embodiment 9.

[0070] Figure 23 yes Figure 22 Exploded view.

[0071] Figure 24 This is a schematic diagram of the transmission wheel assembly in Example 9.

[0072] Figure 25 This is a schematic diagram of the cross-sectional structure of the roller blind described in Example 13.

[0073] Figure 26 This is a partial structural cross-sectional schematic diagram of the roller blind described in Example 14.

[0074] Figure 27 This is an exploded view of the roller shutter described in Example 14.

[0075] Figure 28 This is a schematic diagram of the cross-sectional structure of the roller blind described in Example 15.

[0076] Figure 29 This is a structural schematic diagram illustrating the positional relationship between the head and tail of the guide members within the guide assembly in Embodiment 15. The diagram omits structures such as the curtain material and elastic elements.

[0077] Figure label: 1-Guide assembly; 11-Second end of guide member; 12-First end of guide member; 13-Guide member; 10-Power source; 110-Electric wire; 14-Steering component; 15-Mounting surface; 2-Connecting component; 21-Second bearing housing; 211-Cavity of the second bearing housing; 221-Outer ring of the fourth bearing; 222-Inner ring of the fourth bearing; 223-Outer ring of the fifth bearing; 224-Inner ring of the fifth bearing; 231-Third connecting shaft; 232-Fourth connecting shaft; 24-First bearing housing; 241-Cavity of the first bearing housing; 251-Outer ring of the first bearing; 252-Inner ring of the first bearing; 253-Outer ring of the second bearing; 254-Inner ring of the second bearing; 261-First connecting shaft; 262-Second connecting shaft; 3-Suspension assembly; 31-Limiting component; 32-Third bearing housing; 33-Positioning adjuster; 34-Third bearing; 4-Spindle; 40-Synchronization device assembly; 4110-Recess; 4120-End plate of housing; 4130-Push rod; 4140-Fixing member; 4150-Side wall of housing; 420-First friction ring; 430-Second friction ring; 440-First pressure-applying member; 450-Elastic member for adjusting friction; 460-Second pressure-applying member; 470-Hollow shaft; 5-Cord material; 50-Drive wheel assembly; 510-Drive wheel; 5110-Ratchet; 520-Pawl; 5210-Root of pawl; 5220-Front end of pawl; 5230-Elastic support; 530-Pawl support shaft; 6-Support member; 60-Side rail; 61-Second friction area; 62-First friction area; 63-Second end of support member; 64-First end of support member; 7-Roller support; 8-Counterweight bottom rail; 9-Damping assembly; 90-Transmission component; 91-Damping plate; 92-Damping seat; 93-Damping adjustment component. Detailed Implementation

[0078] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0079] The terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "third," "fourth," or "fifth" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0080] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0081] If an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or it can be an element placed in between. The use of terms such as "vertical," "horizontal," "upper," "lower," "left," "right," and similar directional descriptions in the embodiments is for illustrative purposes only and does not represent the only possible implementation.

[0082] In this document, the singular forms “an,” “a,” and “the” include their plural forms, unless the context otherwise requires.

[0083] In this article, "mounting surface" refers to the mounting surface of the roller shutter, unless otherwise explicitly specified.

[0084] In this article, "two parts are molded into one" means that the parts are combined into one.

[0085] Example 1 Figures 1-8 The roller blind of this embodiment is shown. The roller blind includes a roller 4, curtain material 5, an upward guide device, a power source, a roller support 7, a suspension assembly 3, and a counterweight bottom rail 8. The roller 4 is tubular, sleeved around the power source, and driven by the power source. The upward guide device includes a guide assembly 1. A first side of the curtain material 5 is rolled onto the roller 4, and a second side is opposite to the first side. The second side extends upward over the guide assembly 1, causing the curtain material 5 to hang on the guide assembly 1, forming a balance structure with the guide assembly 1 as the fulcrum. Figure 4 The surface of the guide assembly 1 has a first friction region for providing friction to the curtain material 5 it contacts. The first friction region exists in the form of a cylindrical friction tube.

[0086] The roller blind is configured such that, during the winding and unwinding process, for at least a certain period of time, the highest point of the guide component 1 is higher than the highest point of the curtain material 5 wound on the roller 4. This allows the balance structure with the guide component 1 as the fulcrum to apply an upward force to the roller 4 through the curtain material 5, regardless of whether the curtain material 5 is wound clockwise or counterclockwise on the roller 4. This is beneficial for raising the horizontal position of the roller 4's axis by pulling up the roller 4.

[0087] The upward guide device also includes a support member 6 ( Figure 4 and Figure 6 Support member 6 is connected to guide assembly 1 to support guide assembly 1. Support member 6 partially surrounds spool 4 and is capable of accommodating spool 4 with curtain material 5 wound in the wound state. Guide assembly 1 is disposed on the outer periphery of support member 6, such that curtain material 5 partially surrounds support member 6 in the unwound state. There are two guide assemblies 1, parallel to spool 4. There is one support member 6, with a length approximately equal to that of guide assembly 1, providing multiple support points for guide assembly 1. These support points are evenly distributed along the length of guide assembly 1, effectively preventing the middle section of guide assembly 1 from bending downwards. Support member 6 connects both guide assemblies 1. Guide assembly 1 has multiple rod-shaped guides 13 and connectors 2 for connecting the guides 13. The length of guide assembly 1 is equal to or approximately equal to the length of spool 4. Connector 2 includes a transmission connector. Figure 8The transmission connection shown includes a fourth bearing, a fifth bearing, a second bearing housing 21, a third connecting shaft 231, and a fourth connecting shaft 232. The second bearing housing 21 is mounted on the support member 6. The second bearing housing 21 has a cavity (i.e., the cavity 211 of the second bearing housing). The outer ring 221 of the fourth bearing and the outer ring 223 of the fifth bearing are both disposed in the cavity 211 of the second bearing housing. The third connecting shaft 231 is disposed in the inner ring 222 of the fourth bearing and is connected to the first end 12 of the guide member. The fourth connecting shaft 232 is disposed in the inner ring 224 of the fifth bearing and is connected to the second end 11 of the guide member. The third connecting shaft 231 and the fourth connecting shaft 232, located in the same second bearing housing 21, are connected to each other for transmission. Both the third connecting shaft 231 and the fourth connecting shaft 232 are square shafts with rounded corners. Their four sides facilitate fitting with the square cavities in the first end 12 and the second end 11 of the guide member. Their rounded corners facilitate fitting with the inner ring 222 of the fourth bearing and the inner ring 224 of the fifth bearing, thereby improving the transmission effect. The support member 6 supports the guide assembly 1 by connecting with the second bearing seat 21.

[0088] The two ends of the guide assembly 1 can be mounted on the roller bracket 7, or they can be left unmounted on the roller tube bracket 7. The roller 4 contacts the guide assembly 1 through the curtain 5, so that the curtain 5 not wound on the roller 4 applies an upward force to the roller 4.

[0089] The reel support 7 is connected to the fixed shaft of the power source via the suspension assembly 3. The suspension assembly 3 includes a third bearing 34 and a limiting member 31. The inner ring of the third bearing is located at the end of the fixed shaft, and the outer ring is located on the limiting member 31. When the balance structure with the guide assembly 1 as the fulcrum is unbalanced, causing the reel 4 to move up and down, it is driven to rotate up and down along the limiting member 31. The power source is an electric power source.

[0090] The outer ring of the third bearing is set on the limiting member 31 by means of method 1): In means 1), the outer ring of the third bearing has a groove on its circumference for straddling the track of the limiting member 31 so that the third bearing 34 can rotate up and down along the limiting member 31.

[0091] There are two suspension components 3, located at both ends of the fixed shaft. The suspension component 3 also includes a third bearing housing 32; the fixed shaft is connected to the inner ring of the third bearing via the third bearing housing 32; the third bearing housing 32 connects to the inner rings of the two third bearings. The suspension component 3 also includes a positioning adjuster 33; the positioning adjuster 33 is connected to the reel 4 to limit the descent amplitude of the reel 4. The positioning adjuster 33 includes an elastic element, which is a spring; the spring is a tension spring. The upper end of the tension spring is mounted on the reel support 7, and the lower end is connected to the end of the reel 4. Its elastic deformation limits the descent amplitude of the reel 4. Simultaneously, due to its own length, once the reel 4 rises and compresses it to a certain extent, it cannot be further compressed, thus also limiting the rising amplitude of the reel 4. In addition, another function of the tension spring or positioning adjuster 33 is that, since the power source is generally installed at one end of the roller 4, the weight of that end of the roller 4 will be significantly greater than that of the other end. Therefore, the positioning adjuster 33 is needed to maintain the balance of both ends of the roller 4, so that when the two ends of the roller 4 are subjected to an upward force applied by the curtain material 5 through the balance structure with the guide assembly 1 as the fulcrum, they can move up and down parallel or nearly parallel to the horizontal plane. For example, the positioning adjuster 33 only needs to be installed at the end of the roller 4 closest to the power source.

[0092] The counterweight bottom rail 8 is located on the second side of the curtain material 5, and a counterweight block (which can be of different shapes, such as rods) can be placed thereto adjust the counterweight. The reverse side of the curtain material 5 is in contact with the guide assembly 1.

[0093] The upward guide device also includes a damping component 9 ( Figure 6 and Figure 7 The damping assembly 9 includes a damping seat 92, a damping plate 91, and a damping adjustment member 93. The damping seat 92 is disposed on the outer periphery of the support member 6. The damping plate 91 is disposed between the damping seat 92 and the guide assembly 1. The damping adjustment member 93 is connected to the damping plate 91 and adjusts the degree to which the damping plate 91 presses against the guide assembly 1 by adjusting the force applied to the damping plate 91, thereby adjusting the rotation speed of the guide assembly 1 driven by the curtain material 5, and thus adjusting the magnitude of the friction force between the first friction area and the curtain material 5. The damping assembly 9 is movably connected to the support member 6, and multiple damping assemblies 9 can be installed on the support member 6 as needed.

[0094] Working principle: The power source drives the roller 4 to rotate, which in turn drives the curtain material 5 to complete the winding and unwinding through the upward guide device.

[0095] Rewinding: The power source drives the roller 4 to wind up the curtain material 5, pulling the curtain material 5 hanging on the guide assembly 1 downwards to wind it onto the roller 4. At the same time, the other side of the balance structure, with the guide assembly 1 as the fulcrum, applies an upward pulling force (i.e., a pulling force generated by the balance principle) to the roller 4. During the period when the pulling force generated by the balance principle is greater than the downward force on the roller 4, the horizontal position of the axis of the roller 4 is higher. As winding proceeds, the weight of the curtain material 5 on both sides of the balance changes, and the pulling force generated by the balance principle gradually becomes less than the downward force on the roller 4, causing the horizontal position of the axis of the roller 4 to slowly decrease.

[0096] Unwinding: The power source drives the roller 4 to unwind the curtain material 5. As unwinding proceeds, the weight of the curtain material 5 on both sides of the balance structure with the guide component 1 as the fulcrum changes. The tension generated by the balance principle gradually exceeds the downward force on the roller 4, causing the horizontal position of the axis of the roller 4 to slowly rise.

[0097] Whether winding or unwinding, the horizontal position and duration of the axis of the roll 4 can be controlled by: 1) adjusting the weight or number of counterweights on the counterweight bottom rail 8; 2) adjusting the magnitude of the friction between the first friction area and the curtain material 5. The magnitude of the friction between the first friction area and the curtain material 5 can be adjusted by the damping component 9 or by changing the roughness of the materials on the two friction surfaces.

[0098] Example 2 Figure 9 and Figure 10 The roller blind of this embodiment is shown. The support member 6 has a second friction region 61 on its top inner side. The second friction region 61 exists in the form of a friction rod. The connecting member includes a non-transmission connecting member. The non-transmission connecting member includes a first bearing, a second bearing, a first bearing housing 24, a first connecting shaft 261, and a second connecting shaft 262. The first bearing housing 24 is disposed on the support member 6. The first bearing housing 24 has a cavity (i.e., the cavity 241 of the first bearing housing). The outer ring 251 of the first bearing and the outer ring 253 of the second bearing are both disposed in the cavity 241 of the first bearing housing. The first connecting shaft 261 is disposed in the inner ring 252 of the first bearing and connected to the first end 12 of the guide member. The second connecting shaft 262 is disposed in the inner ring 254 of the second bearing and connected to the second end 11 of the guide member. The first connecting shaft 261 and the second connecting shaft 262, located within the same first bearing housing 24, are separate from each other and do not transmit power. The support member 6 supports the guide assembly by connecting to the first bearing housing 24. The outer ring of the third bearing is mounted on the limiting member via method 2): In method 2), the circumference of the outer ring of the third bearing is embedded in the concave track of the limiting member so that the third bearing can rotate up and down along the limiting member. The rest is the same as in embodiment 1.

[0099] Example 3 Figure 11 The roller blind of this embodiment is shown. The top inner side of the support member 6 has a second friction region 61. The second friction region 61 exists in the form of a friction pad. The rest is the same as in Embodiment 1.

[0100] Example 4 Figure 12 The roller blind of this embodiment is shown. The support member 6 and the guide assembly 1 are integrally formed and fused together. The top outer side of the support member 6 has a first friction area 62, and the top inner side of the support member 6 has a second friction area 61. Both the first friction area 62 and the second friction area 61 exist in the form of friction plates. The rest is the same as in Embodiment 1.

[0101] Example 5 Figure 13 and Figure 14 The roller blind of this embodiment is shown. The guide assembly 1 is connected to the first end 64 of the support member; the first end 64 of the support member is closer to the mounting surface than the roller 4, and the front of the curtain material 5 contacts the guide assembly 1. The second end 63 of the support member is disposed on the mounting surface. The guide assembly 1 has only one guide member, and it is arched upward so that the horizontal position of its middle section is higher than that of its two ends, and the guide assembly 1 is generally arc-shaped. The rest is the same as in Embodiment 1.

[0102] During winding, the curtain material 5 passes through the upward guiding device. Since the highest point of the guiding component 1 (the arc-shaped apex of the middle section of the guiding component 1) is greater than the highest point of the roller 4, it is beneficial to adjust any areas where the curtain material 5 on the middle section of the roller 4 does not fit well with the roller 4 tube. The upward arch of the middle section of the guiding component 1 makes the upward pulling force on the middle section of the roller 4 greater than the upward pulling force at both ends of the roller 4. When the roller 4 rotates, the dynamic friction of the curtain 5 and the upward guide device (the magnitude of sliding friction can be changed by adjusting the position of the upward guide device around the roller 4 to change the contact surface or dynamic friction factor between the curtain 5 and the upward guide device, and rolling friction can be adjusted by changing the smoothness of the rotation of the guide) will counteract the gravity of the roller 4 with the curtain 5 in the air. The curtain 5 will then be evenly and tightly attached to the circumference of the roller 4. That is, the upward pulling force on the curtain 5 at this position will be greater than or equal to that at other places. As the number of winding turns increases, the curtain 5 will be firmly attached layer by layer, ensuring that the curtain 5 at this position will not become thicker, thus preventing wrinkles and pleats.

[0103] Example 6 Figure 15 and Figure 16 The roller blind of this embodiment is shown. The guide assembly 1 is connected to the first end 64 of the support member; the roller 4 is closer to the mounting surface than the first end 64 of the support member. The second end 63 of the support member is disposed on the mounting surface. The rest is the same as in Embodiment 5.

[0104] Example 7 Figure 17 and Figure 18 This embodiment of the roller blind is shown, and the unrolling direction of the roller blind is horizontal. The guide assembly 1 has a rod-shaped guide member with an upwardly arched longitudinal section. The length of the guide member is equal to or approximately equal to the length of the roller spool 4. The two ends of the guide member can be mounted on the roller spool bracket or not. The roller blind also includes a drive wheel 510, a drive member 90, and a length limiting positioning member. The length limiting positioning member is used to limit the unrolling length of the curtain material 5 and includes a positioning roller and a side rail 60. The side rail 60 is parallel to the side of the curtain material 5. The positioning roller and the drive member 90 are both disposed within the side rail 60. The drive member 90 is annular and surrounds the drive wheel 510 and the positioning roller; the power source is connected to the roller spool 4, and the roller spool 4 is connected to the drive member 90 through the curtain material 5. The counterweight bottom rail at the bottom of the curtain material 5 is connected to the drive member 90 through the positioning roller. The rest is the same as in Embodiment 1.

[0105] Example 8 Figure 19 and Figure 20 The roller blind of this embodiment is shown. The guide assembly has three guide members 13. These three guide members 13 are connected by connectors 2 to form a shuttle shape, such that the upper surface of the longitudinal section of the guide assembly arches upward, and the length of the guide assembly is equal to or approximately equal to the length of the roller 4. A support member 6 supports the guide assembly at the connectors 2. The guide assembly is connected to the first end of the support member; the roller 4 is closer to the mounting surface than the first end of the support member. The second end of the support member is disposed on the mounting surface. The rest is the same as in Embodiment 7.

[0106] Example 9 Figures 21-24 The roller blind of this embodiment is shown. This roller blind also includes a side rail 60, anti-disengagement buckles, length limiting positioning components, and a tensioning device. The side rail 60 is disposed on both sides of the area to be covered by the roller blind; the anti-disengagement buckles are disposed on both sides of the curtain material and can slide along the side rail 60. During unrolling, the curtain material unfolds horizontally. The length limiting positioning components are used to limit the unrolling length of the curtain material and include positioning rollers. The tensioning device includes a transmission component 90 and a transmission wheel assembly 50; the transmission wheel assembly 50 includes a transmission wheel 510, a pawl 520, and a pawl support shaft 530; the transmission component 90 is annular and surrounds the transmission wheel 510 and the positioning rollers. The power source 10 is connected to the reel drive, and the reel is connected to the transmission component 90 through the transmission wheel assembly 50, so that the transmission component 90 can rotate with the reel; the reel is also connected to the transmission component 90 through the curtain material.

[0107] The transmission wheel 510 is a ratchet; the ratchet teeth 5110 are arranged in a circumferential manner, tilted to the same side (i.e., tilted in a circumferential manner in the same direction of rotation) on the inner circumferential surface of the transmission wheel 510. The front end 5220 of the pawl is placed inside the ratchet teeth 5110, and the root 5210 of the pawl is located on the outer circumferential surface of the pawl support shaft 530. The transmission wheel assembly 50 is configured such that: when the rotation direction of the pawl support shaft 530 is the same as the tilt direction of the ratchet teeth 5110, the pawl 520 engages inside the ratchet teeth 5110, driving the transmission wheel 510 and the pawl support shaft 530 to rotate synchronously in the same direction; when the rotation direction of the pawl support shaft 530 is opposite to the tilt direction of the ratchet teeth 5110, the pawl 520 slips inside the ratchet teeth 5110, and the transmission wheel 510 does not rotate synchronously with the pawl support shaft 530. (In the right view of the ratchet...) Figure 24 The ratchet teeth 5110 are arranged counterclockwise around the inner circumference of the ratchet, and each ratchet tooth 5110 has the same tilt angle. The pawl support shaft 530 is connected to the hollow shaft 470 for transmission.

[0108] The power source 10 is an electric motor, including a rotor and a stator. The wires 110 of the power source 10 pass through the hollow shaft 470 for connection to a power outlet. The wires 110 on the stator (… Figure 21 By connecting to AC power in a power socket and turning on the switch, an electromagnetic field is generated, causing the rotor to rotate and driving the spool connected to the rotor to rotate.

[0109] A limiting groove is provided on the outer circumferential surface of the pawl support shaft 530; the limiting groove is connected to the pawl 520 through the elastic support member 5230. Figure 24 The limiting groove is used to limit the rotation range of the pawl 520 around the elastic support 5230, so that the pawl 520 can rotate around the elastic support 5230 to facilitate slippage when it slips in the ratchet teeth 5110 of the ratchet gear, and also to ensure that the pawl 520 does not rotate around the elastic support 5230 to drive the transmission wheel 510 when it is engaged in the ratchet teeth 5110 of the ratchet gear and drives the transmission wheel 510 to rotate synchronously with the pawl support shaft 530.

[0110] The tensioning device also includes a synchronization device assembly 40; the synchronization device assembly 40 includes a housing, a friction assembly, an adjustment assembly, and a rotating shaft. The rotating shaft is a hollow shaft 470. The housing of the synchronization device assembly is connected to the reel in a drive connection; the hollow shaft 470 of the synchronization device assembly is connected to the transmission component 90 via a transmission wheel assembly 50.

[0111] The friction assembly includes a first friction ring 420 and a second friction ring 430; a hollow shaft 470 passes through the first friction ring 420 and the second friction ring 430; a second linkage component matching the outer contour of the hollow shaft 470 is provided on the inner ring contour of the second friction ring 430, so that the second friction ring 430 and the hollow shaft 470 rotate synchronously. The first friction ring 420 is close to the second friction ring 430, and the friction between the two drives the first friction ring 420 and the second friction ring 430 to rotate in the same direction. A first linkage component matching the recess 4110 of the inner wall of the outer shell is provided on the outer ring contour of the first friction ring 420, so that the outer shell and the first friction ring 420 rotate synchronously.

[0112] The adjusting component adjusts the friction force between the first friction ring 420 and the second friction ring 430 by applying pressure to the friction component. The hollow shaft 470 is connected to the pawl support shaft 530, so that the pawl support shaft 530 can rotate with the hollow shaft 470.

[0113] The adjusting assembly includes a first pressure-applying member 440, a friction-adjusting elastic member 450, and a second pressure-applying member 460 arranged sequentially. The adjusting assembly changes the pressure applied to the friction assembly by adjusting the extension and retraction of the friction-adjusting elastic member 450, thereby adjusting the frictional force between the first friction ring 420 and the second friction ring 430. The outer contours of both the first pressure-applying member 440 and the second pressure-applying member 460 are the same as the outer contour of the first friction ring 420, allowing both the first pressure-applying member 440 and the second pressure-applying member 460 to rotate with the housing. The first pressure-applying member 440 and the second pressure-applying member 460 are annular. The fasteners are bolts. The first friction ring 420, the second friction ring 430, the first pressure-applying member 440, and / or the second pressure-applying member 460 are made of brake pads.

[0114] The friction-adjusting elastic element 450 is a spring. The degree of elastic deformation of the friction-adjusting elastic element 450 is adjusted by fasteners. The fasteners include a push rod 4130 and a fixing member 4140. The extension and retraction of the push rod 4130 can change the elastic deformation force on the friction-adjusting elastic element 450, thereby adjusting the degree of elastic deformation of the friction-adjusting elastic element 450. The adjusting assembly and the friction assembly are disposed in the space enclosed by the side wall 4150 of the housing and the end plate 4120 of the housing. The push rod 4130 passes through the end plate 4120 of the housing. The first end of the push rod 4130 abuts against the adjusting assembly, and the second end of the push rod 4130 protrudes outside the end plate 4120 and is provided with a fixing member 4140 thereon to control the length of the push rod 4130 extending into the inside of the end plate 4120. In this embodiment, the fixing member 4140 and the push rod 4130 are respectively a nut and a screw. Figure 22 and Figure 23 ), and the quantity is 3 for each.

[0115] The number of both the first friction ring 420 and the second friction ring 430 is greater than one. By adjusting the arrangement of the first friction ring 420 and the second friction ring 430, the friction area is changed, thereby adjusting the transmission effect of the housing to the hollow shaft 470. In this embodiment, the number of first friction rings 420 is 40 and the number of second friction rings 430 is 3, but the number of these two is not limited to these in this invention.

[0116] When it is necessary to increase the friction area between the first friction ring 420 and the second friction ring 430, the first friction ring 420 and the second friction ring 430 are arranged alternately. When it is necessary to appropriately reduce the friction area between the first friction ring 420 and the second friction ring 430, the first friction ring 420 and the second friction ring 430 are arranged partially alternately. When it is necessary to minimize the friction area between the first friction ring 420 and the second friction ring 430 to the maximum extent and the friction area is not zero, the first friction ring 420 and the second friction ring 430 are arranged in two pairs, so that the friction area is only the area of ​​one first friction ring 420 in contact with one second friction ring 403. In most cases of this embodiment, the first friction ring 420 and the second friction ring 430 are arranged alternately, such as... Figure 22 As shown.

[0117] There are two length-limiting positioning components, symmetrically arranged; there are two tensioning devices, symmetrically arranged. Further, there are two positioning rollers, symmetrically arranged; two transmission wheel assemblies 50, symmetrically arranged; two transmission components 90, symmetrically arranged; two synchronization device assemblies 40, symmetrically arranged; and two side rails 60, symmetrically arranged. The rest is the same as in Embodiment 8.

[0118] Example 10 In this embodiment, the support member and the roller bracket are integrally formed, meaning the roller bracket also functions as the support member, eliminating the need for a separate support member to support the guide assembly. In this embodiment, the support member connects to the sections of the guide assembly that extend beyond the curtain fabric at both ends. The guide assembly is rod-shaped, with its upper longitudinal surface arched upwards. During the unwinding and winding of the curtain fabric, the guide assembly experiences sliding friction with the fabric, and the guide assembly itself does not rotate. Everything else is the same as in Embodiment 5.

[0119] Example 11 In this embodiment of the roller blind, the guide component and the support component are integrally formed, meaning that the support component also functions as the guide component, eliminating the need for a separate guide component. The rest is the same as in Embodiment 1.

[0120] Example 12 In this embodiment of the roller blind, the positioning adjuster includes a top wire and a positioning adjustment component; the positioning adjustment component is used to adjust the length of the top wire; the top wire is connected to the roller shaft to prevent the roller shaft from continuing to descend when it reaches a preset value. The rest is the same as in Embodiment 1.

[0121] Example 13 Figure 25 The roller blind of this embodiment is shown. This roller blind also includes a deflector 14 for bringing the curtain fabric 5 close to the mounting surface 15. The contact surface between the deflector 14 and the curtain fabric 5 is the back side of the contact surface between the guide assembly 1 and the curtain fabric 5. That is, when the front side of the curtain fabric 5 contacts the guide assembly 1, the deflector 14 contacts the back side of the curtain fabric 5; when the back side of the curtain fabric 5 contacts the guide assembly 1, the deflector 14 contacts the front side of the curtain fabric 5. The deflector 14 enables the roller blind where the back side of the curtain fabric 5 contacts the guide assembly 1 to achieve close contact between the curtain fabric 5 and the mounting surface 15. The number of guide assemblies 1 is 3, and the number of deflectors 14 is 1. Everything else is the same as in Embodiment 1.

[0122] Example 14 Figure 26 and Figure 27 The roller blind of this embodiment is shown. The guide assembly has three guide members 13. These three guide members 13 are connected by connectors 2 to form a shuttle shape, such that the upper surface of the guide assembly arches upward, and the length of the guide assembly is equal to or approximately equal to the length of the roller 4. A support member 6 supports the guide assembly at the connectors 2. The guide assembly is connected to the first end of the support member; the roller 4 is closer to the mounting surface than the first end of the support member. The second end of the support member is disposed on the mounting surface. The rest is the same as in Embodiment 1.

[0123] Example 15 Figure 28 and Figure 29 This embodiment of the roller blind is shown. The roller blind is an ultra-wide skylight blind. It also includes a side rail 60, anti-disengagement buckles, and a tensioning device. The anti-disengagement buckles are located on both sides of the blind material and can slide along the side rail 60; the side rail 60 is located on both sides of the area to be covered by the roller blind. The tensioning device is the same as in Embodiment 9. Because its guide assembly 1 consists of multiple guide members connected end-to-end, and the support member 6 provides multi-point support for the guide assembly 1 at the connecting member 2, and has a tensioning device, even if its rolling direction is horizontal or nearly horizontal, its width can still reach 30 meters or even wider. The rest is the same as in Embodiment 1.

[0124] The foregoing detailed several specific embodiments and application scenarios of this disclosure, representing only a very small part of the embodiments disclosed. This disclosure cannot list all embodiments, nor does it completely list all application scenarios. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A roller blind, comprising a roller and a curtain material, characterized in that, It also includes an upward guiding device; the upward guiding device includes a guiding component; a first side of the curtain is wound on the roller, and a second side is opposite to the first side; the second side moves upward over the guiding component so that the curtain hangs on the guiding component, forming a balance structure with the guiding component as the fulcrum.

2. The roller blind according to claim 1, characterized in that, The roller blind is configured such that, for at least a certain period of time during the unwinding and winding process, the highest point of the guide assembly is higher than the highest point of the curtain material wound on the roller.

3. The roller blind according to claim 1, characterized in that, The guide assembly is rod-shaped, and the upper surface of its longitudinal section arches upward.

4. The roller blind according to claim 1, characterized in that, The upward guiding device further includes a support member; the support member is connected to the guiding assembly to support the guiding assembly.

5. The roller blind according to claim 4, characterized in that, The support member partially surrounds the roller and is capable of accommodating the roller wound with curtain material in the winding state; the guide component is disposed on the support member and protrudes from or is flush with the outer periphery of the support member; the number of the guide component is at least one; the number of the support member is at least one.

6. The roller blind according to claim 5, characterized in that, The guide component and the support component are integrally formed and integrated.

7. The roller blind according to claim 5, characterized in that, The guiding assembly includes a guide member; the spool contacts the guide member through the curtain material, such that the curtain material not wrapped around the spool exerts an upward force on the spool.

8. The roller blind according to claim 7, characterized in that, The guiding assembly has multiple guiding elements; the multiple guiding elements are connected end to end, or not connected end to end, or partially connected end to end and partially not connected end to end.

9. The roller blind according to claim 7, characterized in that, The guide assembly further includes a connector; the number of guides is not less than two, and the guides are connected to each other by the connector, and the guides connected together by the connector are rod-shaped in whole; the connector includes a transmission connector and / or a non-transmission connector; the transmission connector transmits rotational force between the two guides it connects to achieve synchronous rotation of the two guides it connects to; the non-transmission connector blocks the transmission of rotational force between the two guides it connects to.

10. The roller blind according to claim 9, characterized in that, The connecting component includes the non-transmission connecting component; the non-transmission connecting component includes a first bearing, a second bearing, a first bearing housing, a first connecting shaft, and a second connecting shaft; the first bearing housing is disposed on the support component, the outer rings of the first bearing and the second bearing are both disposed on the first bearing housing, the first connecting shaft is disposed in the inner ring of the first bearing and connected to the first end of the guide component, the second connecting shaft is disposed in the inner ring of the second bearing and connected to the second end of the guide component, the first connecting shaft and the second connecting shaft located in the same first bearing housing are separate from each other and do not transmit power to each other; the support component supports the guide component by connecting to the first bearing housing.

11. The roller blind according to claim 9, characterized in that, The connecting component includes the transmission connecting component; the transmission connecting component includes a fourth bearing, a fifth bearing, a second bearing housing, a third connecting shaft, and a fourth connecting shaft; the second bearing housing is disposed on the support component, the outer rings of the fourth bearing and the fifth bearing are both disposed on the second bearing housing, the third connecting shaft is disposed in the inner ring of the fourth bearing and connected to the first end of the guide component, the fourth connecting shaft is disposed in the inner ring of the fifth bearing and connected to the second end of the guide component, and the third connecting shaft and the fourth connecting shaft located in the same second bearing housing are connected to each other for transmission; the support component supports the guide component by connecting to the second bearing housing.

12. The roller blind according to claim 5, characterized in that, The guide assembly is connected to the first end of the support member; the first end of the support member is closer to the mounting surface than the roller, and the front side of the curtain material is in contact with the guide assembly.

13. The roller blind according to claim 5, characterized in that, The support member has a second friction area on its top inner side.

14. The roller blind according to claim 13, characterized in that, The second friction region exists in one or more forms, such as friction plates, friction beads, friction rods, and friction tubes.

15. The roller blind according to claim 4, characterized in that, The roller blind also includes a power source, a roller support, and a suspension assembly; the roller is driven to the power source; the roller support is connected to the fixed shaft of the power source through the suspension assembly; the suspension assembly includes a third bearing and a limiting member; the inner ring of the third bearing is disposed at the end of the fixed shaft, and the outer ring is disposed on the limiting member and can be driven to rotate up and down along the limiting member when the balance structure with the guide assembly as the fulcrum is unbalanced, causing the roller to move up and down.

16. The roller blind according to claim 15, characterized in that, The surface of the guide assembly has a first friction area for providing friction to the curtain material it contacts.

17. The roller blind according to claim 16, characterized in that, The first friction region exists in one or more forms, such as friction plates, friction beads, friction rods, and friction tubes.

18. The roller blind according to claim 16, characterized in that, The upward guiding device further includes a damping assembly; the damping assembly includes a damping seat, a damping plate, and a damping adjustment component; the damping seat is disposed on the outer periphery of the support member; the damping plate is disposed between the damping seat and the guiding assembly; the damping adjustment component is connected to the damping plate, and by adjusting the force applied to the damping plate, the degree to which the damping plate squeezes the guiding assembly is adjusted, thereby adjusting the rotational speed of the guiding assembly driven by the curtain material, and further adjusting the magnitude of the frictional force between the first friction area and the curtain material.

19. The roller blind according to claim 18, characterized in that, The damping component is movably connected to the support member, and multiple damping components can be installed on the support member as needed.

20. The roller blind according to claim 15, characterized in that, The outer ring of the third bearing is disposed on the limiting member via method 1) and / or method 2): Method 1) A groove is provided on the circumference of the outer ring of the third bearing for straddling the track of the limiting member so that the third bearing can rotate up and down along the limiting member; Method 2) The outer ring of the third bearing is embedded in the concave track of the limiting member so that the third bearing can rotate up and down along the limiting member.

21. The roller blind according to claim 15, characterized in that, The suspension assembly also includes a third bearing housing; the fixed shaft is connected to the inner ring of the third bearing via the third bearing housing; the third bearing housing is connected to at least one inner ring of the third bearing.

22. The roller blind according to claim 15, characterized in that, The suspension assembly also includes a positioning adjuster; the positioning adjuster is connected to the reel to limit the descent of the reel.

23. The roller blind according to claim 22, characterized in that, The positioning adjuster includes an elastic element.

24. The roller blind according to claim 22, characterized in that, The positioning adjuster includes a set screw and a positioning adjustment component; the positioning adjustment component is used to adjust the length of the set screw; the set screw is connected to the reel and is used to prevent the reel from descending further when the reel descends to a preset value.

25. The roller blind according to claim 4, characterized in that, The roller blind also includes a roller bracket; the roller bracket is used to support the roller and the guide assembly, and is integrally formed with the support member.

26. The roller blind according to claim 1, characterized in that, The roller blind also includes a counterweight bottom rail for adjusting the counterweight; the counterweight bottom rail is located on the second side of the curtain material.

27. The roller blind according to claim 1, characterized in that, The roller blind also includes a deflector for bringing the curtain material close to the mounting surface; the contact surface between the deflector and the curtain material is the back side of the contact surface between the guide assembly and the curtain material.

28. The roller blind according to claim 1, characterized in that, During the unwinding process, the unfolding direction of the curtain material is below the horizontal line where the highest point of the guide assembly is located; the roller blind also includes a power source, a length limiting positioning component, and a tensioning device; the length limiting positioning component is used to limit the unwinding length of the curtain material and includes a positioning roller; the tensioning device includes a transmission component and a transmission wheel assembly; the transmission wheel assembly includes a transmission wheel, a pawl, and a pawl support shaft; the transmission component is annular and surrounds the transmission wheel and the positioning roller; The power source is connected to the spool drive, and the spool is connected to the drive component through the drive wheel assembly, so that the drive component can rotate with the spool; the spool is also connected to the drive component through the curtain material; The tensioning device further includes a synchronization device assembly; the synchronization device assembly includes a housing, a friction assembly, and a rotating shaft; the housing of the synchronization device assembly is connected to the reel in a driving connection; the rotating shaft of the synchronization device assembly is connected to the transmission component in a driving connection via the transmission wheel assembly. The friction assembly includes a first friction ring and a second friction ring; the rotating shaft passes through the first friction ring and the second friction ring; a second linkage component matching the outer contour of the rotating shaft is provided on the inner ring contour of the second friction ring, so that the second friction ring rotates synchronously with the rotating shaft; the first friction ring is close to the second friction ring, and the friction between the two drives the first friction ring and the second friction ring to rotate in the same direction; a first linkage component matching the inner wall of the outer shell is provided on the outer ring contour of the first friction ring, so that the outer shell rotates synchronously with the first friction ring; The drive wheel is a ratchet; the ratchet teeth are arranged obliquely around the inner circumference of the ratchet in the same direction of rotation, the front end of the pawl is placed inside the ratchet teeth, and the root of the pawl is located on the outer circumference of the pawl support shaft; the drive wheel assembly is configured such that: when the rotation direction of the pawl support shaft is the same as the oblique direction of the ratchet teeth, the pawl engages with the ratchet teeth, pushing the ratchet and the pawl support shaft to rotate synchronously in the same direction; when the rotation direction of the pawl support shaft is opposite to the oblique direction of the ratchet teeth, the pawl slips inside the ratchet teeth, and the ratchet does not rotate synchronously with the pawl support shaft; the drive wheel assembly only slips when rotating in the winding direction, and when rotating in the unwinding direction, the pawl and the ratchet teeth are engaged, pushing the ratchet to rotate; the pawl support shaft is connected to the rotating shaft.

29. The roller blind according to any one of claims 1 to 28, characterized in that, The roller blind also includes side rails and anti-disengagement buckles; the side rails are located on both sides of the area to be covered by the roller blind; the anti-disengagement buckles are located on both sides of the curtain material and can slide along the side rails.

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