High-stability hidden shutter

Abstract

The utility model relates to a high-stability hidden shutter which comprises a window frame, a plurality of shutter blades arranged in the window frame and control connecting rods symmetrically arranged on the two sides of the shutter blades, rotating pieces are connected between the two sides of each shutter blade and the corresponding control connecting rod, one end of each rotating piece is hinged to the corresponding shutter blade, and the other end of each rotating piece is hinged to the corresponding control connecting rod. The end, away from the rotating piece, of each window blade is hinged to the surface of the window frame, the window frame is provided with a synchronous driving mechanism for driving the control connecting rods on the two sides to axially and synchronously ascend and descend, and it is guaranteed that the control connecting rods on the two sides always keep consistent ascending and descending speed and displacement in the moving process. Therefore, the window blades are evenly stressed in the opening and closing process, the problem of structural deformation caused by uneven stress is effectively avoided, the stability of the louver is greatly improved, and the service life of the louver is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the field of venetian blinds, and particularly to a highly stable concealed venetian blind. Background Technology

[0002] Venetian blinds are a common architectural shading and ventilation device, widely used in homes, offices, and public places. Traditional venetian blinds typically consist of multiple slats, with their opening and closing controlled by a pull cord or manual adjustment mechanism.

[0003] A Chinese utility model patent with publication number CN217269899U discloses an electrically adjustable venetian blind, comprising a window frame, several window slats disposed within the window frame, and control rods symmetrically disposed on both sides of the window frame. Each window slat is connected to a control rod by a rotating plate. One end of the rotating plate is rotatably connected to the window frame via a first pin, and the other end of the rotating plate is rotatably connected to the control rod via a second pin. An electric adjustment device is provided on one side of the window frame to push the control rods up and down. This utility model uses an electric adjustment device to push the control rods up and down, which in turn drives the window slats to rotate, thus opening and closing the venetian blind. It has a simple structure, is easy to install, and is convenient and quick to operate, solving the problem of inconvenient opening and closing of venetian blinds.

[0004] However, this type of electrically adjustable louver still has the following drawbacks in actual use:

[0005] 1. Existing motorized louver drive structures are typically exposed, which not only affects the overall aesthetics but also makes them susceptible to environmental factors such as dust accumulation and rain erosion, leading to a shortened lifespan of the drive components. Furthermore, the exposed drive structure appears visually cluttered and fails to meet the requirements of modern architecture for a simple and aesthetically pleasing design.

[0006] 2. Existing motorized blinds typically operate by driving one side of the blinds with a motorized opener, while the other side is only subjected to follow-up power. This design results in uneven stress on both sides of the blinds, which can easily lead to structural deformation after long-term use, affecting the normal opening and closing function of the blinds, and may even cause the blinds to become unusable. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to provide a highly stable concealed venetian blind that addresses the shortcomings of the prior art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a highly stable concealed venetian blind, comprising a window frame, a plurality of window blades disposed within the window frame, and control links symmetrically disposed on both sides of the window blades. Each window blade is connected to a rotating plate on both sides of the control link. One end of the rotating plate is hinged to the window blade, and the other end is hinged to the control link. The end of each window blade away from the rotating plate is hinged to the surface of the window frame. The window frame is provided with a synchronous drive mechanism for driving the control links on both sides to move axially and synchronously.

[0009] Using the above technical solution, the window slats are set inside the window frame, while the control links are symmetrically distributed on both sides of the window slats. Each window slat has a rotating plate connected to both sides of the control link. One end of these rotating plates is hinged to the window slat, and the other end is hinged to the control link, so that the window slats can rotate around the end that is hinged to the window frame surface, realizing the opening and closing function of the blinds. The window frame is also equipped with a special synchronous drive mechanism, which can drive the control links on both sides to move synchronously in the axis, ensuring that the control links on both sides always maintain a consistent lifting speed and displacement during the movement. This makes the window slats evenly stressed during the opening and closing process, effectively avoiding structural deformation caused by uneven stress, and greatly improving the stability and service life of the blinds.

[0010] The aforementioned high-stability concealed louver can be further configured such that: the synchronous drive mechanism includes a screw that is rotatably disposed on one side of the control linkage on both sides, a slider disposed on the outer circumferential surface of the screw, and a transmission mechanism that drives the screws on both sides to rotate synchronously, wherein one end of the slider is threadedly connected to the screw and the other end is connected to the control linkage.

[0011] Using the above technical solution, the transmission mechanism can be gear transmission, synchronous pulley transmission, shaft transmission, chain transmission, belt transmission, etc. The synchronous drive mechanism is the core component for realizing the axial synchronous lifting and lowering of the control links on both sides of the louver. It includes three parts: a screw, a slider, and a transmission mechanism. The screw is rotatably mounted on one side of the control links on both sides, and its outer circumference is threaded for cooperating with the slider. One end of the slider is connected to the screw through the thread. When the screw rotates, the slider can move along the axial direction of the screw. The other end of the slider is connected to the control link, thereby converting the rotational motion of the screw into the linear motion of the control link. The transmission mechanism is responsible for driving the screws on both sides to rotate synchronously, ensuring that the control links on both sides can lift and lower at the same speed and direction, thereby realizing the smooth opening and closing of the louver blades. Through this design, the synchronous drive mechanism can not only effectively ensure the synchronicity of the control links on both sides of the louver and avoid structural deformation caused by uneven force, but also improve the overall stability and service life of the louver.

[0012] The aforementioned high-stability concealed louver can be further configured such that: the transmission mechanism includes a power input component and a transmission rod disposed at the output end of the power input component; a steering mechanism is provided between the transmission rod and the screws on both sides; the power input component drives the transmission rod to rotate, and the transmission rod drives the screws to rotate synchronously through the steering mechanisms at both ends.

[0013] Using the above technical solution, the transmission mechanism is the core component of the synchronous drive mechanism. Its main function is to input power and convert it into the synchronous rotation of the screws on both sides, thereby realizing the axial synchronous lifting and lowering of the control link. The transmission mechanism includes a power input component and a transmission rod. The power input component provides the initial power for the entire transmission process, which can be hand-cranked or motor-driven. Its output end is connected to the transmission rod, which is connected to the screws on both sides through steering gears at both ends. When the power input component works, it drives the transmission rod to rotate. The rotational motion of the transmission rod is transmitted to the screws on both sides through the steering gears, making the screws rotate synchronously. The steering gear plays a key role in steering and power distribution, ensuring that the screws on both sides can rotate at the same speed and direction, thereby realizing the synchronous lifting and lowering of the control link. This further improves the stability and reliability of the louver opening and closing process. In addition, through precise power transmission and synchronous control, it effectively avoids structural deformation caused by uneven force on both sides, significantly improving the overall performance and service life of the louver.

[0014] The aforementioned high-stability concealed louver can be further configured such that: the steering mechanism includes a steering box body disposed at the end of the screw, an axial worm gear disposed at the end of the screw, and a transverse worm gear disposed at the end of the transmission rod and meshing with the axial worm gear.

[0015] Using the above technical solution, the steering box is located at the end of the screw, serving to support and protect the internal transmission components. The axial worm is also installed at the end of the screw, coaxially with it, to transmit the rotational motion of the screw to the steering gear. The transverse worm is located at the end of the transmission rod and meshes with the axial worm. When the transmission rod rotates, the transverse worm rotates accordingly and transmits power to the screw through meshing with the axial worm, simultaneously reversing the direction of power so that the screw can rotate along its axial direction. This worm gear transmission method not only achieves precise power transmission and steering functions but also has high transmission stability and self-locking performance, effectively preventing the screw from reversing due to external forces when it stops rotating. This ensures the smoothness and reliability of the louvers during opening and closing, further improving the stability and service life of the louvers.

[0016] The aforementioned high-stability concealed louver can be further configured such that: the power input component includes a hand-cranked gearbox, a hand crank, and a transmission helical gear fixedly mounted on a transmission rod; one end of the hand crank passes through the hand-cranked gearbox and is provided with an input helical gear that meshes with the transmission helical gear.

[0017] Using the above technical solution, one end of the hand crank is inserted into the hand crank gearbox and connected to an input helical gear. The transmission helical gear is fixedly mounted on the transmission rod and meshes with the input helical gear on the hand crank. When the user manually rotates the hand crank, the hand crank drives the input helical gear to rotate. Since the input helical gear and the transmission helical gear mesh, the rotation of the input helical gear drives the rotation of the transmission helical gear. The rotation of the transmission helical gear is further transmitted to the transmission rod, causing the transmission rod to rotate. In this way, the power of manual operation is effectively transmitted to the transmission mechanism, thereby driving the screw to rotate, realizing the raising and lowering of the control linkage, and finally completing the opening and closing operation of the blinds. This design not only provides a simple and reliable manual drive method for blinds, but also ensures the smoothness and efficiency of power transmission through helical gear transmission. At the same time, the setting of the hand crank gearbox also provides protection for the transmission components, preventing external factors from interfering with or damaging them, further improving the stability and service life of the blinds.

[0018] The aforementioned high-stability concealed louver can be further configured as follows: the transmission rod includes transmission sub-rods connected to steering gears at both ends respectively; one end of the transmission sub-rod is connected to a transverse worm gear, and the other end passes through a hand-cranked gear box and is linked to each other via a linkage rod; the inner diameter of the linkage rod is smaller than the inner diameter of the transmission sub-rods; the transmission helical gear is mounted on the linkage rod and meshes with the input helical gear on the hand crank for transmission.

[0019] Using the above technical solution, the transmission rod consists of two transmission branches. One end of each transmission branch is connected to the transverse worm gear in one side of the steering gear, which is used to transmit power to the steering gear and drive the screw to rotate. The other end of the transmission branch passes through the hand crank gear box and is linked to each other through a linkage rod. This segmented design not only ensures the flexibility of the transmission rod, but also realizes the synchronous movement of the two transmission branches through the linkage rod, ensuring that the power can be evenly transmitted to the steering gears on both sides. The inner diameter of the linkage rod is smaller than the inner diameter of the transmission branch. This size difference allows the transmission helical gear to be stably set on the linkage rod, giving the hand crank enough position to connect. When the hand crank is rotated, the input helical gear drives the transmission helical gear to rotate, thereby driving the linkage rod and the transmission branch to rotate.

[0020] The aforementioned high-stability concealed louver can be further configured as follows: the window frame includes side frames on both sides and a top frame and a bottom frame on the upper and lower sides of the side frames. The side frames are provided with receiving cavities. The side frames are provided with connecting grooves at the corresponding rotating pieces for the rotating pieces to enter or leave the receiving cavities. One end of the rotating piece passes through the connecting groove and is connected to a control linkage in the receiving cavity. The transmission mechanism is located in the bottom frame. The screw is located in the receiving cavity, and one end passes through the bottom frame and is connected to the steering mechanism.

[0021] Using the above technical solution, the window frame serves as the overall support structure for the louver, integrating the space and functional layout for concealed transmission components. The window frame consists of side frames on both sides, and a top and bottom frame located on the upper and lower sides of the side frames respectively. The side frames have internal cavities to conceal and accommodate transmission components such as control rods and screws, achieving a concealed transmission structure design, improving aesthetics, and protecting the transmission components from external environmental influences. The side frames have connecting grooves corresponding to the positions of the rotating blades. One end of the rotating blade enters the cavities through these grooves and connects with the control rods within the cavities, thus enabling the connection between the window blades and the control rods. A transmission link is established between the components to control the opening and closing of the louvers. The transmission mechanism is located inside the bottom frame and is responsible for driving the screw to rotate, which in turn drives the control linkage to achieve the opening and closing operation of the louvers. The screw is installed in the receiving cavity of the side frame, with one end passing through the bottom frame and connecting to the steering mechanism. The steering mechanism realizes the transmission and direction conversion of power, driving the screw to rotate synchronously. This window frame structure design not only realizes the concealment and protection of the transmission components, but also ensures the stability, reliability and aesthetics of the louver transmission system through reasonable spatial layout and component connection, while improving the overall performance and service life of the product.

[0022] The aforementioned high-stability concealed louver can be further configured as follows: the side frame is provided with a guide groove at the control link, the control link is a guide rail adapted to the guide groove, the guide rail is set in the guide groove and moves up and down along the guide groove axis, the surface of the guide rail is provided with a hinge seat connected to the rotating plate, and the slider is connected to one of the hinge seats.

[0023] The above technical solution features a guide groove on the side frame corresponding to the control link. This guide groove is adapted to the control link, allowing it to be mounted as a guide rail within the groove and move up and down along its axial direction. This provides precise guidance for the control link's movement, ensuring smooth and linear motion during lifting and lowering. It avoids transmission problems or structural deformation caused by swaying or offset. The surface of the control link (guide rail) is equipped with a hinge seat for connecting to the rotating plate, thus converting the linear motion of the control link into the rotational motion of the window slats. The slider is connected to one of the hinge seats, and the rotation of the screw drives the slider to move along the screw's axial direction, thereby driving the control link to lift and lower. This not only improves the stability and reliability of the transmission but also ensures the smoothness and consistency of the louvers during opening and closing through precise guidance and connection, further enhancing the overall performance and service life of the product.

[0024] The aforementioned high-stability concealed louver can be further configured such that: a rotating seat for rotating the screw is fixed at the corresponding screw position on the side frame; a connecting sleeve is provided after one end of the screw passes through the rotating seat; and the connecting sleeve is inserted into the steering gear and linked with the transmission rod.

[0025] By adopting the above technical solution, the rotating seat provides stable support and positioning for the screw's rotation, ensuring that the screw maintains a precise axial position and stable motion state during rotation. One end of the screw passes through the rotating seat and is connected to a connecting sleeve. The function of the connecting sleeve is to connect the power output end of the screw to the steering gear, realizing effective power transmission. The connecting sleeve passes into the steering gear and is linked with the transmission rod, so that the rotational motion of the screw can be transmitted to the transmission rod through the connecting sleeve, thereby driving the worm gear transmission system in the steering gear. This not only ensures the high efficiency and stability of power transmission, but also improves the rotational accuracy of the screw and the reliability of the system through the cooperation of the rotating seat and the connecting sleeve, further enhancing the overall performance and service life of the louver transmission system.

[0026] The aforementioned high-stability concealed louver can be further configured such that: both ends of the bottom frame corresponding to the deflector are provided with deflector fixing brackets, the deflector fixing brackets are L-shaped, and the end facing the screw is provided with a positioning groove for the connecting sleeve to pass through; the outer surface of the side frame is provided with several hinges that are hinged to the window blades.

[0027] Using the above technical solution, the bottom frame is equipped with steering gear fixing brackets at both ends of the corresponding steering gear. These brackets are L-shaped and are used to firmly support and fix the steering gear, ensuring that it remains stable and does not shift or shake during operation. Each steering gear fixing bracket has a positioning groove at the end facing the screw. The connecting sleeve passes through the positioning groove, thereby achieving precise docking and stable connection between the connecting sleeve and the steering gear. The outer surface of the side frame is equipped with several hinges. These hinges are hinged to the ends of the window slats, allowing the window slats to rotate flexibly around the hinge point, thereby realizing the opening and closing function of the blinds. The window slats can maintain smooth and stable movement during opening and closing. At the same time, the hinges also provide necessary support for the window slats, ensuring that they can fit tightly in the closed state, effectively blocking light or external interference.

[0028] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0029] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0030] Figure 2 Explosion of this utility model embodiment Figure 1 .

[0031] Figure 3 Explosion of this utility model embodiment Figure 2 .

[0032] Figure 4 This is a right view of the open state of this utility model embodiment.

[0033] Figure 5 for Figure 4 A three-dimensional sectional view along the AA direction.

[0034] Figure 6 for Figure 5 Enlarged view of point B.

[0035] Figure 7 This is a three-dimensional schematic diagram of an embodiment of the present invention after removing part of the side frame and bottom frame.

[0036] Figure 8 This is the front view of the embodiment of the present invention in its open state.

[0037] Figure 9 for Figure 8 A three-dimensional cross-sectional view along the CC direction.

[0038] Figure 10 This is the front view of the embodiment of the present invention in its closed state.

[0039] Figure 11 for Figure 10DD-direction sectional perspective view.

[0040] Figure 12 for Figure 11 Enlarged view of point E. Detailed Implementation

[0041] like Figures 1-12 As shown, a highly stable concealed venetian blind includes a window frame, which includes side frames 1 on both sides and a top frame 2 and a bottom frame 3 on the upper and lower sides of the side frames 1. Each side frame 1 has a receiving cavity 11. Multiple axially arranged window blades 4 and corresponding guide rails 5 are installed within the window frame. Each window blade 4 has a rotating piece 41 connected to both sides of the guide rail 5. One end of the rotating piece 41 is hinged to the lower end of the window blade 4, and the other end passes through the connecting groove of the side frame 1 and is hinged to a hinge seat 51 on the guide rail 5. The upper ends of each window blade 4 away from the rotating piece 41 are hinged to the outer surface of the side frame 1 via hinges 42. The window frame is equipped with a synchronous drive mechanism for driving the guide rails 5 on both sides to move axially and synchronously. The synchronous drive mechanism includes a screw 6 rotating on one side of each guide rail 5 and a... The slider 61 on the outer circumference of the screw 6 and the transmission mechanism that drives the screws 6 on both sides to rotate synchronously. One end of the slider 61 is threadedly connected to the screw 6, and the other end is connected to one of the hinge seats 51 on the guide rail 5. The side frame 1 is fixed with rotating seats 62 for the screw 6 to rotate inside, corresponding to the two ends of the screw 6. The transmission mechanism includes a hand crank 7 and a transmission rod 71 set at the output end of the hand crank 7. A diverter 8 is provided between the transmission rod 71 and the screws 6 on both sides. One end of the screw 6 passes through the rotating seat 62 and is provided with a connecting sleeve 63. The connecting sleeve 63 passes into the diverter 8 and is linked with the transmission rod 71. The hand crank 7 drives the transmission rod 71 to rotate, and the transmission rod 71 drives the screw 6 to rotate synchronously through the diverters 9 at both ends, driving the rotating plate 41 to enter or leave the receiving cavity 11, so as to realize the smooth opening and closing of the window blade 4.

[0042] like Figure 9 , Figure 12 As shown, the steering gear 8 includes a steering box body 81 located at the end where the side frame 1 and the bottom frame 3 meet, an axial worm gear 82 located at the end of the screw 6, and a transverse worm gear 83 located at the end of the transmission rod 71 and meshing with the axial worm gear 82. The bottom frame 3 is provided with steering gear fixing brackets 84 at both ends corresponding to the steering gear 8. The steering gear fixing brackets 84 are L-shaped, and a positioning groove 841 is opened at the end facing the screw 6 for the connecting sleeve 63 to pass through.

[0043] like Figure 6As shown, the hand-cranked actuator 7 (power input assembly) includes a hand-cranked gearbox 72, a hand crank 73, and a transmission helical gear 74 fixedly mounted on the transmission rod 71. One end of the hand crank 73 passes through the bottom frame 3 and the hand-cranked gearbox 72 and is provided with an input helical gear 731 that meshes with the transmission helical gear 74. The transmission rod 71 includes a transmission branch rod 711 that is connected to the steering gears 8 at both ends. One end of the transmission branch rod 712 is connected to the transverse worm gear 83, and the other end passes through the hand-cranked gearbox 72 and is linked to each other through the linkage rod 712. The inner diameter of the linkage rod 712 is smaller than the inner diameter of the transmission branch rod 711. The transmission helical gear 74 is mounted on the outer circumference of the linkage rod 712 and meshes with the input helical gear 731 on the hand crank 73.

[0044] like Figures 2-11 As shown, one end of the rotating plate 41 passes through the connecting groove and connects to the guide rail 5 in the accommodating cavity 11. The transmission mechanism is set in the bottom frame 3. The screw 6 is set in the accommodating cavity 11, and one end passes through the bottom frame 3 and connects to the steering device 8. The side frame 1 is provided with a guide groove 10 corresponding to the guide rail 5. The guide rail 5 is set in the guide groove 10 and moves up and down along the axial direction of the guide groove 10 to achieve stable and smooth lifting of the guide rail 5.

[0045] When using this high-stability concealed venetian blind, the user needs to turn the hand crank 73 to rotate the input helical gear 731. The input helical gear 731 drives the transmission helical gear 74 to rotate, which in turn drives the transmission rod 71 to rotate synchronously. The transmission rod 71 transmits power through the transverse worm 83 and the axial worm 82 in the steering gear 8, driving the screws 6 on both sides to rotate synchronously. The rotation of the screws 6 drives the slider 61 to move axially. The slider 61 drives the control link (guide rail 5) to rise and fall through the hinge seat 51. The rise and fall of the control link drives the rotating plate 41 to enter or leave the side frame 1. The upper end of the window blade 4 is hinged through the hinge 42. When the lower rotating plate 41 moves, the window blade 4 will open and close stably and synchronously.

Claims

1. A highly stable concealed venetian blind, comprising a window frame, a plurality of window slats disposed within the window frame, and control links symmetrically disposed on both sides of the window slats, wherein each window slat is connected to a rotating plate on both sides of the control link, characterized in that: One end of the rotating plate is hinged to the window blade, and the other end is hinged to the control linkage. The end of each window blade away from the rotating plate is hinged to the window frame surface. The window frame is provided with a synchronous drive mechanism that drives the control linkages on both sides to move axially and synchronously.

2. The high-stability concealed venetian blind according to claim 1, characterized in that: The synchronous drive mechanism includes a screw that is rotatably mounted on one side of the control linkage on both sides, a slider mounted on the outer circumference of the screw, and a transmission mechanism that drives the screws on both sides to rotate synchronously. One end of the slider is threadedly connected to the screw, and the other end is connected to the control linkage.

3. The high-stability concealed venetian blind according to claim 2, characterized in that: The transmission mechanism includes a power input component and a transmission rod disposed at the output end of the power input component. A steering gear is provided between the transmission rod and the screws on both sides. The power input component drives the transmission rod to rotate, and the transmission rod drives the screws to rotate synchronously through the steering gears at both ends.

4. A highly stable concealed venetian blind according to claim 3, characterized in that: The steering gear includes a steering box body disposed at the end of the screw, an axial worm gear disposed at the end of the screw, and a transverse worm gear disposed at the end of the transmission rod and meshing with the axial worm gear.

5. A highly stable concealed venetian blind according to claim 4, characterized in that: The power input assembly includes a hand-cranked gearbox, a hand crank, and a transmission helical gear fixedly mounted on a transmission rod. One end of the hand crank passes through the hand-cranked gearbox and is equipped with an input helical gear that meshes with the transmission helical gear.

6. A highly stable concealed venetian blind according to claim 5, characterized in that: The transmission rod includes transmission sub-rods that are connected to steering gears at both ends. One end of each transmission sub-rod is connected to a transverse worm gear, and the other end passes through a hand-cranked gearbox and is linked to each other via a linkage rod. The inner diameter of the linkage rod is smaller than the inner diameter of the transmission sub-rods. The transmission helical gear is mounted on the linkage rod and meshes with the input helical gear on the hand crank for transmission.

7. A highly stable concealed venetian blind according to any one of claims 3-6, characterized in that: The window frame includes side frames on both sides and a top frame and a bottom frame on the upper and lower sides of the side frames. Each side frame has a receiving cavity. The side frame has a connecting groove at the corresponding position of the rotating piece for the rotating piece to enter or leave the receiving cavity. One end of the rotating piece passes through the connecting groove and is connected to the control linkage in the receiving cavity. The transmission mechanism is located in the bottom frame. The screw is located in the receiving cavity and one end passes through the bottom frame and is connected to the steering mechanism.

8. A highly stable concealed venetian blind according to claim 7, characterized in that: The side frame is provided with a guide groove at the corresponding control link. The control link is a guide rail adapted to the guide groove. The guide rail is set in the guide groove and moves up and down along the axial direction of the guide groove. The surface of the guide rail is provided with a hinge seat connected to the rotating plate. The slider is connected to one of the hinge seats.

9. A highly stable concealed venetian blind according to claim 7, characterized in that: The side frame is fixed with a rotating seat for the screw to rotate at the corresponding position of the screw. One end of the screw passes through the rotating seat and is provided with a connecting sleeve. The connecting sleeve passes into the steering gear and is linked with the transmission rod.

10. A highly stable concealed venetian blind according to claim 9, characterized in that: The bottom frame is provided with steering gear fixing brackets at both ends corresponding to the steering gear. The steering gear fixing brackets are L-shaped and have a positioning groove for the connecting sleeve to pass through at the end facing the screw. The outer surface of the side frame is provided with several hinges that are hinged to the window blades.

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