Venetian blind capable of independently adjusting light

Abstract

The utility model provides a shutter blind capable of adjusting light independently, which comprises an upper beam with a containing cavity, and a first driving mechanism, a first transmission mechanism driven by the first driving mechanism, a second driving mechanism and a second transmission mechanism driven by the second driving mechanism are arranged in the containing cavity. The at least two blades are fixedly hung below the upper beam through the ladder rope; the ladder rope is used for fixing blades, the upper end of the ladder rope is fixed to the dimming assembly, and the dimming assembly is connected with the first transmission mechanism; one end of the lifting rope is fixed to the rope winding assembly, the other end of the lifting rope is fixed to the blade farthest away from the upper beam, the rope winding assembly is connected with the second transmission mechanism, the lifting rope comprises a first rope set and a second rope set, the first rope set is arranged on one side of the blade, and the second rope set is arranged on the other opposite side of the blade. The folding and unfolding of the blades are realized by the second driving mechanism, so that the mutual interference between the rotation and folding and unfolding of the blades is avoided, the dependence of the rotation of the blades on the friction force between the rope winder and the ladder rope is eliminated, and the light leakage can be avoided.

Description

Technical Field

[0001] This utility model relates to a blind for buildings or vehicles, specifically a Venetian blind that can be independently dimmed. Background Technology

[0002] Blackout blinds, such as Roman blinds, honeycomb blinds, and Venetian blinds, typically include a top beam, curtain rod, blackout fabric, and bottom beam. If motorized, they also include a drive mechanism and transmission mechanism. Blackout blinds are primarily used to block light from buildings or vehicles, and also serve to regulate the temperature inside. Common Venetian blinds use lifting and ladder ropes on a rope roller to control the raising and rotating angle of the blind slats, thereby changing the blackout area. The ladder ropes usually utilize friction between themselves and the rope roller to adjust the slat rotation angle. This means that the ladder rope's control of the slats depends entirely on the friction between the ladder rope and the rope roller, which is not conducive to the diverse use of slat materials. Furthermore, traditional Venetian blinds share a single power source for the ladder and lifting ropes, requiring the blind slats to be switched to the blackout state before raising or lowering. This results in significant wear, high resistance, and noise during raising and lowering. Additionally, because the lifting ropes in traditional Venetian blinds pass through the slats, holes are needed on the slats for connecting the lifting ropes, which can lead to light leakage when the blinds are in blackout mode. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an independently adjustable Venetian blind. The raising and lowering of the blind and the adjustment of the blade angle are controlled by their respective power and transmission mechanisms, so that the adjustment of the ladder rope is not limited by the magnitude of its friction, and the resistance during the raising and lowering process is small, reducing wear and preventing light leakage.

[0004] This utility model provides an independently dimmable Venetian blind, comprising:

[0005] The upper beam has a receiving cavity, in which a first driving mechanism and its first transmission mechanism are provided, and a second driving mechanism and its second transmission mechanism are provided.

[0006] The blades, at least two, are suspended below the upper beam by ladder ropes;

[0007] The ladder rope is used to fix the blades, and its upper end is fixed to the dimming assembly. The dimming assembly is connected to the first transmission mechanism.

[0008] The lifting rope has one end fixed to the rope winding assembly and the other end fixed to the blade furthest from the upper beam. The rope winding assembly is connected to the second transmission mechanism. The lifting rope includes a first rope group and a second rope group. The first rope group is located on one side of the blade, and the second rope group is located on the opposite side of the blade.

[0009] With the above structure, the rotation of the blades is achieved by the dimming component and the ladder rope driven by the first drive mechanism and the first transmission mechanism. The raising and lowering of the blades is achieved by the lifting rope and the winding rope assembly driven by the second drive mechanism and the second transmission mechanism. This avoids mutual interference between the rotation and raising / lowering of the blades and eliminates the dependence of the blade rotation on the friction between the winding rope and the ladder rope. The independent blade rotation power system has almost no restrictions on the blade material, and heavier and larger blades can be used, which can further expand the use effect and decorative effect of the Venetian blinds. Moreover, dimming and raising / lowering are driven by dual power separately. When raising or lowering, the ladder rope can be driven by the dimming component to first rotate the blades to a horizontal state, thereby reducing the frictional resistance between blades and between blades and the lifting rope during the raising and lowering process, reducing wear, and thus extending the service life. In addition, the lifting rope adopts a structure in which the first rope group and the second rope group run from both sides of the blades, which can avoid opening holes in the blades and thus prevent light leakage when the Venetian blinds are in the dark state.

[0010] Furthermore, the first drive mechanism and the second drive mechanism are housed within a housing to form a drive assembly; the drive assembly is located at one end of the upper beam or in the middle of the upper beam.

[0011] Furthermore, the first transmission mechanism includes a first transmission rod, a first drive mechanism is connected to the first transmission rod, the power of the first drive mechanism drives the first transmission rod to rotate, and a dimming component is provided on the first transmission rod.

[0012] Furthermore, the first transmission mechanism includes a first driving wheel, a first driven wheel, and a first transmission rod. A first drive mechanism is connected to the first driving wheel, and the power of the first drive mechanism drives the first driving wheel. The first driving wheel meshes with the first driven wheel, the first driven wheel is connected to the first transmission rod, and the first transmission rod is connected to the dimming assembly.

[0013] Furthermore, the second transmission mechanism includes a second driving wheel, a second driven wheel, a third driven wheel, a second transmission rod, and a third transmission rod. The second drive mechanism is connected to the second driving wheel, and the power of the second drive mechanism drives the second driving wheel to rotate. The second driving wheel meshes with the second driven wheel, and the second driven wheel meshes with the third driven wheel. The second driven wheel is connected to the second transmission rod, and the third driven wheel is connected to the third transmission rod.

[0014] More preferably, at least one driven wheel is provided between the second driven wheel and the third driven wheel.

[0015] Alternatively, the second transmission mechanism includes a second driving wheel, a second driven wheel, a third driven wheel, a second transmission rod, and a third transmission rod. The second drive mechanism is connected to the second driving wheel, and the power of the second drive mechanism drives the second driving wheel to rotate. The second driven wheel and the third driven wheel are respectively engaged with the second driving wheel. The second driven wheel is connected to the second transmission rod, and the third driven wheel is connected to the third transmission rod.

[0016] Furthermore, a set of rope winding assemblies includes at least two rope winders arranged along the length of the blade; a set of dimming assemblies includes at least two dimming wheels arranged along the length of the blade.

[0017] Furthermore, a support is provided inside the accommodating cavity of the upper beam, and a first rope threading hole is provided on each side of the bottom surface of the support. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the independently dimmable Venetian blind of this utility model.

[0019] Figure 2 This is a schematic diagram of the second structure of the independently dimmable Venetian blind of this utility model.

[0020] Figure 3 This is a structural diagram showing the drive assembly located at one end of the upper beam.

[0021] Figure 4 This is a structural diagram showing the drive assembly located in the middle of the upper beam.

[0022] Figure 5 This is a schematic diagram of a transmission mechanism.

[0023] Figure 6 This is a schematic diagram of another structure of the transmission mechanism.

[0024] Figure 7 for Figure 3 A magnified view of a portion of region A in the middle.

[0025] Figure 8 This is a schematic diagram of the assembly structure of the rope reel and the support.

[0026] Figure 9 This is a schematic diagram of the assembly structure of the rope reel and the support from another perspective.

[0027] In the diagram, 1-upper beam, 2-drive group, 3-blade, 4-ladder rope, 5-lifting rope, 6-switching wheel, 8-rope winder, 9-support, 21-housing, 22-first drive mechanism, 23-second drive mechanism, 41-connecting cable, 51-first rope group, 52-second rope group, 71-first transmission rod, 72-second transmission rod, 73-third transmission rod, 74-first driving wheel, 75-first driven wheel, 76-second driving wheel, 77-second driven wheel, 78-third driven wheel, 79-fourth driven wheel, 91-first rope hole Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] This invention provides an independently dimmable Venetian blind for use in areas to be shaded, such as doors and windows, on buildings or vehicles. The independently dimmable Venetian blind includes an upper beam 1 installed above the area to be shaded, and several slats 3 for shading. The upper beam 1 is hollow, forming a receiving cavity. A drive assembly 2 and a transmission mechanism are installed within the receiving cavity. The drive assembly 2 includes a first drive mechanism 22 that provides power for adjusting the angle of the slats 3, and a second drive mechanism 23 that provides power for extending and retracting the slats 3. Preferably, the drive assembly 2 is disposed within the same housing 21, resulting in better overall integrity and easier installation of the Venetian blind. The drive assembly 2 can be located at one end of the upper beam 1 or in the middle of the upper beam 1, for example... Figures 1 to 6 As shown. When the drive group 2 is located at the end of the upper beam 1, the drive mechanism used can be a drive component with a power output shaft at only one end, such as a single-output motor. When the drive group 2 is located in the middle position of the upper beam 1, the drive mechanism used can be a single-output motor as described above, or a drive component with power output shafts at both ends, such as a dual-output motor.

[0034] The first drive mechanism 22 outputs power to the first transmission mechanism, thereby driving the dimming component to rotate. Since one end of the ladder rope 4 is fixed to the dimming component, the rotation of the dimming component will cause the ladder rope 4 to deflect. Figures 3 to 7 As shown, the ladder rope 4 has several connecting cables 41, which are correspondingly sleeved on several blades 3. Therefore, when the ladder rope 4 deflects, the connecting cables 41 tilt, which will cause the angle of the blades 3 to change, thus achieving the purpose of adjusting the degree of light blocking without lifting the venetian blind.

[0035] There are at least two blades 3. Generally speaking, there are more than eight blades 3 to form a close arrangement of blades 3. As mentioned above, the blades 3 are fixed and suspended below the upper beam 1 by ladder ropes 4. The number of connecting cables 41 of ladder ropes 4 matches the number of blades 3. The blades 3 are arranged in sequence and sleeved in the connecting cables 41 and fixed to ladder ropes 4.

[0036] The second drive mechanism 23 outputs power to the second transmission mechanism, which drives the rope winding assembly to rotate. One end of the lifting rope 5 is fixed to the rope winding assembly, and the other end is fixed to the blade 3 furthest from the upper beam 1. Therefore, when the rope winding assembly rotates, the lifting rope 5 is either retracted or released, and the blades 3 of the Venetian blind are lifted or lowered in sequence to directly change the shading area of ​​the Venetian blind.

[0037] In traditional Venetian blinds, the dimming and slat lifting functions are combined into a complex mechanism driven by a single motor. This requires a high-power motor, resulting in high noise, high torque, and severe wear during operation. Furthermore, if batteries are used to provide power, larger capacity batteries are required, increasing costs. In this utility model of independently dimmable Venetian blinds, the rotation of the blades 3 is achieved by the dimming component and the ladder rope 4 driven by the first drive mechanism 22 and the first transmission mechanism. The raising and lowering of the blades 3 is achieved by the lifting rope 5 and the winding rope component driven by the second drive mechanism 23 and the second transmission mechanism. This avoids mutual interference between the rotation and raising / lowering of the blades 3, eliminates the dependence of the rotation of the blades 3 on the friction between the winding rope 8 and the ladder rope 4, and the independent blade rotation power system has almost no restrictions on the material of the blades 3. Heavier and larger blades 3 can be used, which can further expand the use effect and decorative effect of the Venetian blinds. The installation is simple and less prone to errors. Moreover, the dimming and raising / lowering are driven by dual power separately. When raising or lowering, the dimming component can drive the ladder rope 4 to first rotate the blades 3 to a horizontal state, thereby reducing the frictional resistance between blades 3 and between blades 3 and the lifting rope 5 during the raising and lowering process, reducing wear, and thus extending the service life. In addition, the lifting rope 5 adopts the structure of the first rope group 51 and the second rope group 52 running from both sides of the blades 3, which can avoid opening holes in the blades 3, thereby preventing light leakage in the Venetian blinds when they are in the dark.

[0038] As an improved embodiment, the first transmission mechanism includes a first transmission rod 71, which is connected to the power output shaft of the first drive mechanism 22. The power of the first drive mechanism 22 is transmitted to the first transmission rod 71 through the power output shaft to make it rotate. A dimming wheel 6 is sleeved on the first transmission rod 71. In this embodiment, two dimming wheels 6 are set as an example (the number of dimming wheels 6 is adjusted according to the actual situation such as the size and weight of the blade 3. One, two, three, four, etc. can be set, and other embodiments are the same). Therefore, the rotation of the first transmission rod 71 drives the dimming wheel 6 to rotate, thereby causing the ladder rope 4 to deflect. The blade 3 is fixed to the ladder rope 4, and the deflection of the ladder rope 4 causes the blade 3 to rotate.

[0039] As an improved embodiment, refer to the appendix. Figure 5 , 6The first transmission mechanism includes a first driving wheel 74 and a first driven wheel 75 that mesh with each other. The first driving wheel 74 is sleeved on the power output shaft of the first drive mechanism 22. The driving force of the first drive mechanism 22 drives the first driving wheel 74 to rotate, thereby driving the first driven wheel 75 that meshes with it to rotate. The first driven wheel 75 is sleeved on the first transmission rod 71. At the same time, the first transmission rod 71 is sleeved with a dimming wheel 6. Similar to the previous embodiment, the number of dimming wheels 6 is set to two in this embodiment. Therefore, the rotation of the first driven wheel 75 drives the first transmission rod 71 to rotate, which in turn drives the dimming wheel 6 to rotate, thereby causing the ladder rope 4 to deflect. The blade 3 is fixed to the ladder rope 4, and the deflection of the ladder rope 4 causes the blade 3 to rotate.

[0040] The lifting rope 5 includes a first rope group 51 and a second rope group 52. Correspondingly, two rope winding assemblies are required, arranged side by side. See attached diagram. Figures 3 to 6 The first rope group 51 is located on one long side of the blade 3, and the second rope group 52 is located on the other long side of the blade 3. One end of the first rope group 51 is wound in a rope winding assembly, and the other end is fixed to the blade 3 furthest from the upper beam 1; one end of the second rope group 52 is wound in another rope winding assembly, and the other end is fixed to the blade 3 furthest from the upper beam 1. The first rope group 51 and the second rope group 52 can be two pull ropes; or they can be a single pull rope, with one end wound around the rope winding assembly and the other end wrapped around all the blades 3 before being wound in another rope winding assembly. The lifting rope passes around both sides of the blade, eliminating the need to drill holes in the blade for the lifting rope to pass through, thus avoiding the light leakage problem caused by drilling holes in the blade.

[0041] A bracket 9 is also provided inside the cavity of the upper beam 1. The bracket 9 can be integrally formed with the upper beam 1 or it can be a detachable separate component. The bracket 1 is used to support the first transmission rod 71, the second transmission rod 72, and the third transmission rod 73. The dimming wheel 6 and the rope winder 8 are mounted on the bracket 9. (See attached diagram) Figure 7 , 8 9. Each side of the bottom surface of the support 9 has a first rope hole 91 for the first rope group 51 and the second rope group 52 to pass through, respectively. The bottom surface of the upper beam 1 has a corresponding second rope hole (not shown in the figure).

[0042] As an improved embodiment, the second transmission mechanism includes a second driving wheel 76, a second driven wheel 77, and a third driven wheel 78. The second driving wheel 76 meshes with the second driven wheel 77, the second driven wheel 77 meshes with the third driven wheel 78, the second driven wheel 77 is sleeved on the second transmission rod 72, and the third driven wheel 78 is sleeved on the third transmission rod 73. The second drive wheel 76 is mounted on the power output shaft of the second drive mechanism 23. The driving force of the second drive mechanism 23 drives the second drive wheel 76 to rotate, which in turn drives the second driven wheel 77 and the third driven wheel 78 to rotate. Each rope winding assembly generally includes at least two rope winders 8. The second driven wheel 77 drives the second transmission rod 72 to rotate, and the second transmission rod 72 drives the rope winder 8 that cooperates with the first rope group 51 to rotate, thereby winding up or unwinding the first rope group 51. The third driven wheel 78 drives the third transmission rod 73 to rotate, and the third transmission rod 73 drives the rope winder 8 that cooperates with the second rope group 52 to rotate, thereby winding up or unwinding the second rope group 52. During the winding and unwinding process, the first rope group 51 and the second rope group 52 are always synchronized (rising and falling together), so that the two sides of the blade remain balanced.

[0043] A more preferred improvement is, as shown in the appendix... Figure 5 At least one driven wheel may also be provided between the second driven wheel 77 and the third driven wheel 78. Figure 5 The demonstration setup includes a fourth driven wheel 79. The second driving wheel 76 and the fourth driven wheel 79 mesh with the second driven wheel 77, and the third driven wheel 78 meshes with the fourth driven wheel 79. Power is transmitted from the second driving wheel 76 to the second driven wheel 77, then to the fourth driven wheel 79, and finally to the third driven wheel 78, achieving synchronous rotation of the second transmission rod 72 and the third transmission rod 73. This design accommodates different installation spaces.

[0044] Another configuration of the second transmission mechanism is shown in the appendix. Figure 6 The second transmission mechanism includes a second driving wheel 76, a second driven wheel 77, a third driven wheel 78, a second transmission rod 72, and a third transmission rod 73. The second driven wheel 77 and the third driven wheel 78 are respectively engaged with the second driving wheel 76. The power output shaft of the second drive mechanism 23 is sleeved inside the second driving wheel 76. The driving force of the second drive mechanism 23 drives the second driving wheel 76 to rotate, and the second driving wheel 76 drives the second driven wheel 77 and the third driven wheel 78 to rotate. Each rope assembly generally includes at least two winders 8; a second driven wheel 77 is sleeved on a second drive bar 72, and a third driven wheel 78 is sleeved on a third drive bar 73. Therefore, the rotation of the second driven wheel 77 drives the rotation of the second drive bar 72, and the second drive bar 72 drives the winder 8 that cooperates with the first rope group 51 to rotate, thereby winding up or unwinding the first rope group 51. The rotation of the third driven wheel 78 drives the rotation of the third drive bar 73, and the third drive bar 73 drives the winder 8 that cooperates with the second rope group 52 to rotate, thereby winding up or unwinding the second rope group 52.

[0045] Unless otherwise specified, the materials, reagents, and experimental equipment involved in this embodiment of the utility model are all commercially available products in the field of door and window shielding equipment.

[0046] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make improvements and modifications without departing from the core technology of this utility model, and such improvements and modifications should also fall within the patent protection scope of this utility model. Any changes within the meaning and scope equivalent to the claims of this utility model should be considered as included within the scope of the claims.

Claims

1. A Venetian blind with independent dimming capability, characterized in that, include: The upper beam has a receiving cavity, in which a first driving mechanism and its driving first transmission mechanism are provided, and a second driving mechanism and its driving second transmission mechanism are provided. The blades, at least two blades, are suspended below the upper beam by ladder ropes; A ladder rope is used to fix the blade, and its upper end is fixed to the dimming assembly, which is connected to the first transmission mechanism. The lifting rope has one end fixed to the rope winding assembly and the other end fixed to the blade furthest from the upper beam. The rope winding assembly is connected to the second transmission mechanism. The lifting rope includes a first rope group and a second rope group. The first rope group is located on one side of the blade, and the second rope group is located on the opposite side of the blade.

2. The independently dimmable Venetian blind as described in claim 1, characterized in that, The first drive mechanism and the second drive mechanism are disposed in a housing to form a drive assembly.

3. The independently dimmable Venetian blind as described in claim 2, characterized in that, The drive assembly is located at one end of the upper beam or in the middle of the upper beam.

4. The independently dimmable Venetian blind as described in claim 1, characterized in that, One set of the rope winding assembly includes at least two rope winders arranged along the length direction of the blade; one set of the dimming assembly includes at least two dimming wheels arranged along the length direction of the blade.

5. The independently dimmable Venetian blind as described in claim 1, characterized in that, The first transmission mechanism includes a first transmission rod, the first drive mechanism is connected to the first transmission rod, and the dimming component is disposed on the first transmission rod.

6. The independently dimmable Venetian blind as described in claim 1, characterized in that, The second transmission mechanism includes a second driving wheel, a second driven wheel, a third driven wheel, a second transmission rod, and a third transmission rod. The second drive mechanism is connected to the second driving wheel. The second driving wheel meshes with the second driven wheel, and the second driven wheel meshes with the third driven wheel. The second driven wheel is connected to the second transmission rod, and the third driven wheel is connected to the third transmission rod.

7. The independently dimmable Venetian blind as described in claim 6, characterized in that, At least one driven wheel is also provided between the second driven wheel and the third driven wheel.

8. The independently dimmable Venetian blind as described in claim 1, characterized in that, The second transmission mechanism includes a second driving wheel, a second driven wheel, a third driven wheel, a second transmission rod, and a third transmission rod. The second drive mechanism is connected to the second driving wheel, and the second driven wheel and the third driven wheel are respectively meshed with the second driving wheel. The second driven wheel is connected to the second transmission rod, and the third driven wheel is connected to the third transmission rod.

9. The independently dimmable Venetian blind as described in claim 1, characterized in that, The upper beam is also equipped with a support, and a first rope hole is provided on each side of the bottom surface of the support.

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