Light transmission adjusting device for venetian blind

Abstract

The utility model belongs to the technical field of venetian blinds, and discloses a light transmission adjusting device for a venetian blind, which comprises blades arranged on the inner side of a venetian blind frame body, the blades are connected with a rotary driving component, a light transmission adjusting component is arranged on the blades, the light transmission adjusting component comprises a cavity arranged in the blades, and the cavity is provided with a light transmission adjusting component. The front side and the rear side of the cavity are provided with transparent windows, the transparent windows are installed on the blades, a moving frame is arranged in the cavity in a sliding mode, blocking pieces corresponding to the transparent windows are fixed to the moving frame, one end of the moving frame is connected with a displacement adjusting assembly, and the rotation driving assembly comprises a rotating rod fixedly connected with one ends of the blades. The rotating rod is fixedly connected with a first gear, the light transmission amount of the blades can be adjusted by controlling the size of the overlapping area of the blocking pieces and the transparent window, and therefore when the shutter blind is closed, external cold and hot air can be prevented from entering the shutter blind, and the light transmission can be adjusted according to requirements.

Description

Technical Field

[0001] This utility model belongs to the field of Venetian blind technology, specifically a light transmittance adjustment device for Venetian blinds. Background Technology

[0002] Venetian blinds are a common device used for shading, light control, ventilation, and privacy protection at openings such as windows. They typically consist of multiple parallel slats and related accessories. By adjusting the angle of the slats, the amount and angle of sunlight entering the room can be controlled. When the slats are adjusted to a non-closed angle, gaps are formed between the slats, allowing air to circulate and exchange indoor and outdoor air, thus providing ventilation. Under normal use, from the outside, the slats of Venetian blinds can block the view inside, preventing outsiders from directly seeing into the room, thereby providing a certain degree of privacy.

[0003] Chinese Patent Application No. 202320588497.8 discloses a light transmittance adjustment device for Venetian blinds, including a Venetian blind frame, a light transmittance adjustment component fixedly connected to the top front of the Venetian blind frame, an adjustment rod extending through the left side of the light transmittance adjustment component, a transmission box fixedly connected to the top left side of the Venetian blind frame, the left side of the adjustment rod extending into the transmission box, a small cylinder fixedly connected to the left side of the bottom of the transmission box, a connecting rod fixedly connected to the output end of the small cylinder, a toothed plate fixedly connected to the top of the connecting rod, a rotating rod movably connected laterally inside the transmission box via a bearing, a toothed ring sleeved on the left side of the rotating rod surface, the back of the toothed ring meshing with the toothed plate, and a vertical wheel sleeved on the right side of the rotating rod surface. This device changes the traditional manual adjustment method by adopting an automatic adjustment method, thus avoiding excessive waste of manpower and not affecting user convenience.

[0004] However, the above-mentioned light transmission adjustment device for Venetian blinds has the following problems in actual use: some Venetian blinds have blades made of opaque material. When the Venetian blinds are closed, they can prevent cold and hot air from entering, but they will affect the entry of light and make them inconvenient for people to use.

[0005] Therefore, a light transmittance adjustment device for Venetian blinds is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a light transmittance adjustment device for Venetian blinds, which has the advantage of adjusting the light transmittance of the slats of the Venetian blinds to facilitate their use.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a light transmittance adjustment device for Venetian blinds, comprising blades installed inside the Venetian blind frame, the blades being connected to a rotation drive assembly, and the blades being provided with a light transmittance adjustment assembly;

[0008] The light transmission adjustment component includes a cavity formed inside the blade, transparent windows provided on the front and rear sides of the cavity, the transparent windows being installed on the blade, a movable frame being slidably provided inside the cavity, a baffle corresponding to the transparent window being fixed on the movable frame, and a displacement adjustment component being connected to one end of the movable frame.

[0009] Preferably, flexible strips are provided at both the upper and lower ends of the blade.

[0010] Preferably, the rotary drive assembly includes a rotating rod fixedly connected to one end of the blade, a first gear fixedly connected to the rotating rod, a rack meshing with the first gear, a second gear meshing with the rack, and a drive motor connected to the second gear via a motor shaft.

[0011] Preferably, a support shaft is installed at the other end of the blade at a position corresponding to the rotating rod, and the support shaft is connected to the venetian blind frame.

[0012] Preferably, a limiting groove is formed on the inner wall of the cavity, and the limiting groove is slidably connected to the moving frame through a limiting slider.

[0013] Preferably, the displacement adjustment assembly includes a threaded rod fixedly connected to the movable frame, the threaded rod being threadedly connected to a threaded tube, the threaded tube being connected to a blade via a connecting bearing, a gear ring being fixedly mounted on the threaded tube, and the gear ring being meshed with an adjusting gear.

[0014] Preferably, the front end of the adjusting gear passes through the blade, and the adjusting gear is rotatably connected to the blade.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model adjusts the amount of light transmitted by setting a light transmission adjustment component to control the overlapping area of ​​the baffle and the transparent window. This allows the light transmission of the louvers to be adjusted, thus preventing the entry of hot or cold air from the outside when the blinds are closed. The light transmission can also be adjusted as needed.

[0017] 2. By setting a rotation drive component, this utility model can adjust the rotation angle of the blades to control the opening and closing of the Venetian blinds, thereby controlling the amount of light entering and the amount of air exchanged, which is beneficial to the use of Venetian blinds. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the blade structure of this utility model;

[0020] Figure 3 This is a cross-sectional view of the blade of this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the blade of this utility model;

[0022] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A;

[0023] Figure 6 This is a structural diagram showing the position of the rack in this utility model.

[0024] In the image: 1. Leaf;

[0025] 2. Rotary drive assembly; 21. Rotating rod; 22. First gear; 23. Rack; 24. Second gear;

[0026] 25. Drive motor; 26. Support shaft;

[0027] 3. Light transmission adjustment component; 31. Cavity; 32. Transparent window; 33. Movable frame; 34. Baffle;

[0028] 35. Displacement adjustment assembly; 351. Threaded rod; 352. Threaded pipe; 353. Connecting bearing;

[0029] 354. Gear ring; 355. Adjusting gear;

[0030] 36. Limiting slide;

[0031] 4. Flexible strip. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figures 1 to 6 As shown, this utility model provides a light transmittance adjustment device for Venetian blinds, including blades 1 installed inside the Venetian blind frame, blades 1 connected to a rotation drive assembly 2, and a light transmittance adjustment assembly 3 provided on blades 1.

[0034] The light transmission adjustment component 3 includes a cavity 31 opened in the blade 1. Transparent windows 32 are provided on the front and rear sides of the cavity 31. The transparent windows 32 are installed on the blade 1. A movable frame 33 is slidably provided in the cavity 31. A baffle 34 corresponding to the transparent window 32 is fixed on the movable frame 33. One end of the movable frame 33 is connected to a displacement adjustment component 35. By controlling the size of the overlapping area between the baffle 34 and the transparent window 32, the amount of light transmitted by the blade 1 can be adjusted. Thus, when the venetian blind is closed, it can prevent cold or hot air from entering, and the light transmission can be adjusted as needed.

[0035] Specifically, flexible strips 4 are provided at both the upper and lower ends of blade 1. When blade 4 is in a vertical state, the venetian blind is in a closed state, and the flexible strips 4 between the upper and lower blades 1 fit together to enhance the sealing performance and reduce the passage of air.

[0036] Furthermore, the rotary drive assembly 2 includes a rotating rod 21 fixedly connected to one end of the blade 1. The rotating rod 21 is fixedly connected to a first gear 22. The first gear 22 is meshed with a rack 23. The rack 23 is meshed with a second gear 24. The second gear 24 is connected to a drive motor 25 through a motor shaft, which drives the blade 1 to rotate at a certain angle. This allows adjustment of the gap between the blades 1, control of the amount of light and air entering, and control of the venetian blind closing.

[0037] Furthermore, a support shaft 26 is installed at the other end of the blade 1 at the position corresponding to the rotating rod 21. The support shaft 26 is connected to the venetian blind frame, and the blade 1 rotates around the support shaft 26.

[0038] It is worth noting that a limiting groove 36 is provided on the inner wall of the cavity 31. The limiting groove 36 is slidably connected to the moving frame 33 through a limiting slider, which is used to limit the movement trajectory of the moving frame 33.

[0039] It is worth noting that the displacement adjustment assembly 35 includes a threaded rod 351 fixedly connected to the movable frame 33, the threaded rod 351 is threadedly connected to a threaded tube 352, the threaded tube 352 is connected to the blade 1 through a connecting bearing 353, a gear ring 354 is fixed on the threaded tube 352, and the gear ring 354 is meshed with an adjusting gear 355. The movable frame 33 is manually adjusted to move, so as to control the overlapping area of ​​the baffle 34 and the transparent window 32, thereby controlling the light transmittance of the blade 1.

[0040] It is worth mentioning that the front end of the adjusting gear 355 passes through the blade 1, and the adjusting gear 355 is rotatably connected to the blade 1, which facilitates the rotation of the adjusting gear 355.

[0041] The drive motor 25 is existing technology and will not be described in detail here. In addition, this utility model also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail here.

[0042] Working principle and process: Start the drive motor 25 of the rotary drive assembly 2, which in turn rotates the second gear 24 to drive the rack 23 to move up and down, which in turn drives the first gear 22 and the rotating rod 21 to rotate, so that the blades 1 can rotate around the support shaft 26, thereby adjusting the light transmittance and air exchange rate over a wide range. When the blades 1 are in the vertical state, the Venetian blind can be closed, so that the air exchange between the indoor and outdoor is stopped. The adjustment gear 355 of the displacement adjustment assembly 35 can be pushed to rotate, which in turn drives the gear ring 354 and the threaded tube 352 to rotate, so that the threaded rod 351 moves in the threaded tube 352, which drives the moving frame 33 and the baffle 34 to move. By controlling the overlapping area of ​​the baffle 34 and the transparent window 32, the light transmittance of the blades 1 can be controlled, so as to adjust the amount of light transmitted when the Venetian blind is closed, which is beneficial to the use of the Venetian blind.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A light transmittance adjustment device for Venetian blinds, comprising slats (1) installed inside the Venetian blind frame, characterized in that: The blade (1) is connected to a rotation drive assembly (2), and the blade (1) is provided with a light transmission adjustment assembly (3); The light transmission adjustment component (3) includes a cavity (31) opened in the blade (1), and transparent windows (32) are provided on the front and rear sides of the cavity (31). The transparent windows (32) are installed on the blade (1). A movable frame (33) is slidably provided in the cavity (31). A baffle (34) corresponding to the transparent window (32) is fixed on the movable frame (33). A displacement adjustment component (35) is connected to one end of the movable frame (33).

2. The light transmittance adjustment device for a Venetian blind according to claim 1, characterized in that: Flexible strips (4) are provided at both the upper and lower ends of the blade (1).

3. The light transmittance adjustment device for a Venetian blind according to claim 1, characterized in that: The rotary drive assembly (2) includes a rotating rod (21) fixedly connected to one end of the blade (1), the rotating rod (21) is fixedly connected to a first gear (22), the first gear (22) is meshed with a rack (23), the rack (23) is meshed with a second gear (24), and the second gear (24) is connected to a drive motor (25) through a motor shaft.

4. The light transmittance adjustment device for a Venetian blind according to claim 3, characterized in that: A support shaft (26) is installed at the other end of the blade (1) at a position corresponding to the rotating rod (21), and the support shaft (26) is connected to the venetian blind frame.

5. The light transmittance adjustment device for a Venetian blind according to claim 1, characterized in that: The inner wall of the cavity (31) is provided with a limiting groove (36), and the limiting groove (36) is slidably connected to the moving frame (33) through a limiting slider.

6. The light transmittance adjustment device for a Venetian blind according to claim 1, characterized in that: The displacement adjustment assembly (35) includes a threaded rod (351) fixedly connected to the movable frame (33), the threaded rod (351) is threadedly connected to a threaded tube (352), the threaded tube (352) is connected to the blade (1) through a connecting bearing (353), a gear ring (354) is fixed on the threaded tube (352), and the gear ring (354) is meshed with an adjusting gear (355).

7. The light transmittance adjustment device for a Venetian blind according to claim 6, characterized in that: The front end of the adjusting gear (355) passes through the blade (1), and the adjusting gear (355) is rotatably connected to the blade (1).

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