Recyclable electric shutter curtain control system and control method

Abstract

The application provides a recyclable electric shutter control system and control method, which comprises a frame, a shutter, a driving motor, a transmission assembly and a linkage assembly. The shutter is composed of shutter groups which are movably connected between two side frames. The transmission assembly comprises a driving wheel, a driven wheel and a synchronous belt in the side frame. The linkage assembly comprises a driving link, a plurality of swing links arranged longitudinally and a folding link therebetween. The end of the shutter is connected to the swing link through a turnover shaft seat. A longitudinal opening is formed in the side frame, and the turnover shaft seat is arranged in the longitudinal opening. A linkage seat is fixedly arranged on the synchronous belt. The driving link is connected to the first swing link through the linkage seat. The first swing link is connected to the first shutter. A track groove is longitudinally arranged in the side frame, and a sliding trolley is arranged in the track groove. The driving motor drives the driving wheel to drive the linkage seat on the synchronous belt to move longitudinally, and the opening and closing of the shutter are controlled through the linkage assembly. The transmission assembly is simple, and the opening and closing of the shutter are stable.

Description

Technical Field

[0001] The present invention relates to a Venetian blind, and in particular to a retractable electric Venetian blind control system and a control method thereof, which controls the flipping of blinds on the Venetian blind and the overall retraction of the blind through a motor-driven transmission and linkage system, thereby realizing the opening and closing of the blind. Background Art

[0002] In daily life, the blinds can be turned by pulling the control rope to open or close the blinds, and the entire blinds can be further raised or lowered to adjust the light entering the room through the blinds.

[0003] In recent years, smart homes have become widely popular, and large-scale blinds have also been widely used in building curtain walls, awnings, photovoltaic power generation and other fields. The traditional manual control of blind flipping and retraction can no longer meet the development needs of the blind field, and electric-controlled blinds have come into being.

[0004] For example, the invention patent with application publication number CN114000817A discloses a retracting and extending mechanism for a Venetian blind and an electric Venetian blind, including a scissor-type lifting mechanism, a Venetian blind clamp clamped at the end of the blind, and a rotating mechanism for controlling the rotation of the Venetian blind clamp, wherein the scissor-type lifting mechanism includes a plurality of intersecting connecting rods, two intersecting connecting rods form a group, and are hinged by the Venetian blind clamp; the rotating mechanism includes a rotatable polygonal shaft and a bevel gear assembly, and the bevel gear assembly includes a large bevel gear slidably connected to the polygonal shaft and a small bevel gear fixed to the Venetian blind clamp, and the two are engaged and driven.

[0005] The problem with this type of blinds is that the connecting rods of the scissor-type lifting mechanism cross each other, and each blind is driven by a set of bevel gear assemblies. This results in a large number of parts and cross-meshing relationships between them, which can easily cause jamming and wear. The parts are prone to obstruction, resulting in the blinds not being able to flip and retract smoothly.

[0006] For example, the invention patent with application publication number CN111379512A discloses a blinds control device, which is installed in a slide groove and includes: a rear flip hinge, a front flip hinge, a plurality of flip arms, equally spaced hinges, a blade clamp, a blade clamp slider, a plurality of flip arm pressure plates, a plurality of directional springs, a front traction rope and a rear traction rope. The front traction rope is connected to the front flip hinge, and the rear traction rope is connected to the rear flip hinge to achieve unified steering of all blinds.

[0007] Although this type of blind control device has simplified the number of parts and optimized the connection relationship, the blinds still have the problem of shaking and instability due to the transmission through traction ropes and flip hinges. This problem is particularly prominent in scenarios where it is used in large curtain walls because the blinds are often long. Summary of the Invention

[0008] Based on the problem that the existing electric control venetian blinds system has the problem of difficulty in balancing the complexity of the mechanism and the smoothness and stability of the blinds' flipping and retraction. The present invention provides a retractable electric venetian blinds control system, and further provides a control method for controlling the opening, closing and retraction of the venetian blinds by the control system, so as to achieve stable opening, closing and retraction of the venetian blinds on the basis of maximally simplifying the mechanism.

[0009] The technical solution adopted by the present invention to solve the above technical problems is: a retractable electric venetian blind control system, comprising a frame, a venetian blind, a drive motor, a transmission assembly, and a linkage assembly; the frame comprises an upper frame, a lower frame, and two side frames; the venetian blind is composed of a plurality of venetian blinds arranged longitudinally within the frame;

[0010] Each of the louvers is movably connected between the two side frames, the drive motor drives the transmission assembly, and the transmission assembly controls the opening, closing, and retraction of the louver curtain through the linkage assembly;

[0011] The transmission assembly includes a driving wheel, a driven wheel and a synchronous belt; the synchronous belt connects the driving wheel and the driven wheel; the driving motor can drive the driving wheel to rotate, thereby driving the synchronous belt to rotate around the driving wheel and the driven wheel;

[0012] The driving wheel is located in the upper frame, the driven wheel is located in the lower frame, and the synchronous belt is located in the side frame;

[0013] The linkage assembly is located in the side frame and includes an active link, a plurality of swing links arranged longitudinally in the side frame, and a folding link connected between two adjacent swing links;

[0014] The end of each louver is connected to the swing link at the corresponding position through a flip shaft seat, and the swing link can drive the louver connected thereto to rotate synchronously;

[0015] The side frame is provided with a longitudinal opening, the flip shaft seat is arranged in the longitudinal opening and can move longitudinally along the longitudinal opening;

[0016] A linkage seat is fixedly provided on the synchronous belt; one end of the active link is axially connected to the linkage seat, and the other end is axially connected to the end of the first swing link; the first swing link is connected to the end of the first louver through the first flip shaft seat;

[0017] A track groove is longitudinally provided in the side frame, and a sliding trolley is provided in the track groove and can slide longitudinally along the track groove; the sliding trolley is connected to the linkage seat;

[0018] When the driving motor drives the driving wheel to rotate, driving the synchronous belt to rotate, causing the linkage seat to move longitudinally between the first position and the second position, the linkage seat drives the active link to push and pull the first swing link to rotate, synchronously driving the first louver to flip and switch between the longitudinal closed state and the transverse open state;

[0019] Under the linkage transmission of each folding link, each swing link synchronously drives the shutter connected to it to flip and switch between the longitudinal closed state and the transverse open state, thereby closing or opening the shutter curtain;

[0020] When the driving motor drives the linkage seat to move longitudinally upward from the second position, the linkage seat pushes the first swing link to move upward, and then each of the swing links moves upward layer by layer from bottom to top, and each of the flip shaft seats moves upward layer by layer from bottom to top in the longitudinal opening, and drives the connected louvers to move upward layer by layer from bottom to top synchronously, so that the louver curtains are recovered from bottom to top;

[0021] When the synchronous belt drives the linkage seat to move longitudinally, the sliding trolley synchronously slides longitudinally along the track groove to maintain the stable operation of the synchronous belt.

[0022] The preferred technical solution adopted by the present invention to solve the above technical problems is: the sliding trolley includes a frame, and the frame is connected to the linkage seat through a trolley connecting rod;

[0023] The bottom of the frame is provided with a plurality of bottom wheels, and the side is provided with a plurality of side wheels; the bottom wheels roll on the bottom wall of the track groove, and the side wheels roll on the side walls of the track groove, so that the sliding trolley slides along the track groove.

[0024] The preferred technical solution adopted by the present invention to solve the above technical problems is: an axis hole is opened laterally through the flip shaft seat;

[0025] A connecting column is protruding from the end of the louver, and the connecting column includes a shaft connecting portion matching the shaft hole, and a limiting portion at the front end of the shaft connecting portion;

[0026] The shaft connection portion is inserted into the shaft hole so that the louver forms a flip shaft connection with the flip shaft seat;

[0027] The limiting portion is inserted into the corresponding swing link so that the louver and the swing link form a circumferential limiting connection.

[0028] The preferred technical solution adopted by the present invention to solve the above technical problem is: longitudinally extending cylindrical reinforcing ribs are provided on both sides of the longitudinal opening, and a raised clip is provided on the reinforcing rib along the length direction;

[0029] Longitudinal slots are recessed on both sides of the flip shaft seat. The flip shaft seat is clamped in the longitudinal opening, and the clamping strip is clamped in the slots.

[0030] The preferred technical solution adopted by the present invention to solve the above technical problem is: an axle seat top rod is fixedly provided at the bottom end of the side frame;

[0031] When the louver curtain is fully lowered and the louver is in a horizontally opened state, the linkage seat is in the second position, and the shaft seat top rod abuts against the first flip shaft seat;

[0032] When the linkage seat moves longitudinally from the second position to the first position, the linkage seat drives the active link to pull the first swing link to rotate from the horizontal to the longitudinal direction, and the axle seat top rod pushes against the first flip axle seat to prevent the longitudinal position of the first swing link from moving downward.

[0033] The preferred technical solution adopted by the present invention to solve the above technical problems is: a lifting rod extending inward is provided on the linkage seat;

[0034] When the linkage seat moves further upward longitudinally from the second position, the lifting rod lifts the first swing link and moves from bottom to top.

[0035] The preferred technical solution adopted by the present invention to solve the above technical problems is: two folding links are axially connected between two adjacent swing links, and each folding link is axially connected to the two longitudinally opposite ends of the two swing links;

[0036] The folding connecting rod comprises a first support rod and a second support rod axially connected to each other, wherein the first support rod or the second support rod is provided with a boss at the axial connection position thereof, so that a folding angle less than 180 degrees is formed between the first support rod and the second support rod with the opening facing outwards;

[0037] When two adjacent swing links approach each other, the folding angles of the two folding links between them gradually decrease, so that both folding links fold inwards.

[0038] The preferred technical solution adopted by the present invention to solve the above technical problems is: a brake rope and an auxiliary spring are provided at the top end of the linkage assembly, and the upper ends of the brake rope and the auxiliary spring are fixedly connected to the frame;

[0039] The lower end of the brake rope is connected to one end of the second swing link, and the lower end of the auxiliary spring is connected to the other end of the second swing link;

[0040] When the louvers are in the transversely open state, the brake rope is pulled tight; when the louvers are in the longitudinally closed state, the auxiliary spring is lengthened to store energy;

[0041] When the louvers are turned from the longitudinally closed state to the transversely open state, the restoring force of the auxiliary spring assists the turning of the louvers.

[0042] The preferred technical solution adopted by the present application to solve the above technical problems is that the inner ring surface of the synchronous belt is uniformly distributed with transmission racks, and the outer circumferential surfaces of the driving wheel and the driven wheel are uniformly distributed with driving racks.

[0043] The driving racks of the driving wheel and the driven wheel are engaged with the transmission racks of the synchronous belt to drive the synchronous belt to rotate around the driving wheel and the driven wheel.

[0044] The preferred technical solution adopted by the present application to solve the above technical problems is that the linkage seat is clamped on the synchronous belt to be fixed with the synchronous belt.

[0045] The first swing link is the lowermost swing link, the first turnover shaft seat is the lowermost turnover shaft seat, and the first louver is the lowermost louver.

[0046] The second position is higher than the first position.

[0047] The preferred technical solution adopted by the present application to solve the above technical problems is that the driving motor is arranged in the upper frame, the driving wheel is fixed in the upper frame by the upper fixing frame and connected to the driving motor through the driving shaft, and the driven wheel is fixed in the lower frame by the lower fixing frame.

[0048] The transmission assembly and the linkage assembly are symmetrically arranged in the two side frames.

[0049] Another technical solution adopted by the present application to solve the above technical problems is a control method of a recyclable electric louver curtain control system, characterized in that:

[0050] Step 1: the driving wheel rotates in the first direction, and under the assistance of the driven wheel, the synchronous belt is driven to rotate in the first direction, and the linkage seat is longitudinally moved from the first position to the second position;

[0051] The linkage seat drives the first swing link to rotate from the longitudinal direction to the transverse direction, and synchronously drives the first louver to turn from the longitudinally closed state to the transversely open state.

[0052] Under the linkage transmission of each folding link, each swing link synchronously drives the louver connected thereto to turn from the longitudinally closed state to the transversely open state.

[0053] The linkage seat comes to the second position, each swing link turns to transverse, each louver turns to transverse open state, the louver curtain is in the down open state;

[0054] Step 2: the driving wheel rotates to the first direction, under the assistance of the driven wheel, the synchronous belt rotates to the first direction, the linkage seat starts to move upward vertically from the second position;

[0055] The linkage seat pushes the first swing link to move upward, and then each swing link is stacked and moved upward layer by layer from bottom to top, and when two adjacent swing links approach each other, the folding link between them is folded inward;

[0056] Each swing link drives the louver connected thereto to be stacked and moved upward layer by layer from bottom to top, so that the louver curtain is retracted from bottom to top;

[0057] When the linkage seat pushes the folding links upward to be stacked together, the linkage seat reaches the third position; all the louvers are stacked at the upper end of the frame, and the louver curtain is completely retracted;

[0058] Step 3: the driving wheel rotates to the second direction, under the assistance of the driven wheel, the synchronous belt rotates to the second direction, and the linkage seat starts to move downward vertically;

[0059] Each swing link is separated and moved downward layer by layer from top to bottom, and when two adjacent swing links move away from each other, the folding link between them is unfolded;

[0060] Each louver is separated and moved downward layer by layer from top to bottom along with the swing link connected thereto, until it returns to the initial position, so that the louver curtain is lowered from top to bottom;

[0061] When the linkage seat returns to the second position, all the folding links are unfolded, and all the swing links and louvers return to the initial position, and the louver curtain is completely lowered;

[0062] Step 4: the driving wheel rotates to the second direction, under the assistance of the driven wheel, the synchronous belt rotates to the second direction, and the linkage seat moves vertically from the second position to the first position;

[0063] The linkage seat drives the driving link to pull the first swing link to rotate from transverse to vertical, and synchronously drives the first louver to turn from transverse open state to vertical closed state;

[0064] Under the linkage transmission of each folding link, each swing link synchronously drives the louver connected thereto to turn from transverse open state to vertical closed state;

[0065] The linkage seat comes to the first position, each swing link rotates to the longitudinal direction, each shutter flips to the longitudinal closed state, and the shutter curtain is in the downward closed state.

[0066] Another technical solution adopted by the present invention to solve the above technical problem is preferably: in the steps 1 and 4, the linkage seat can stay at any position between the first position and the second position, and can reselect to move to the first position or the second position from this position;

[0067] In step 2 and step 3, the linkage seat can stay at any position between the second position and the third position, and can be reselected to move to the second position or the third position from this position.

[0068] Compared with the prior art, the advantages of the present invention are: 1. The driving motor drives the driving wheel, which, with the assistance of the driven wheel, drives the synchronous belt in the side frame to rotate, thereby driving the linkage seat fixed to the synchronous belt to move longitudinally to achieve the control operation of opening, closing and retracting the Venetian blind. In particular, the arrangement of the linkage seat, and the active connecting rod and the first swing connecting rod in the linkage assembly connected thereto form a transmission linkage joint, thereby greatly simplifying the components of the transmission assembly;

[0069] 2. The ends of the louvers are connected to the swing links through the flip shaft seats. Therefore, when the louvers and the swing links are recovered and lowered, the flip shaft seats move up and down in the longitudinal opening, thereby providing a first-level stable guiding effect, that is, it plays a stable guiding role in the up and down longitudinal movement of the swing links and the louvers; at the same time, the linkage seat is connected to the sliding trolley. When the synchronous belt drives the linkage seat to move longitudinally, the sliding trolley slides synchronously along the track groove longitudinally, thereby providing a second-level stable guiding effect, that is, maintaining stable operation when the synchronous belt drives the linkage seat.

[0070] 3. The stable guidance of the first and second levels mentioned above is also the backing and guarantee for the transmission component to be streamlined without affecting the stability of the state conversion action of the blinds. Especially when the retractable electric blinds control system is used in scenes with high heights, the blinds themselves are heavy, and the stability required for flipping the blinds is higher; and the blinds move a long distance when they are retracted or lowered, and the synchronous belt is prone to shaking, resulting in unstable movement of the linkage seat. At the same time, the length of the linkage component is also long, and the requirements for stable coordination between the transmission component and the linkage component are also higher. At this time, the retractable electric blinds control system provided by the present invention has more significant advantages than the existing technology, and has stronger stability due to the clever coordination between the side frames, transmission components, and linkage components. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] The present application will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are merely for illustrative purposes and thus should not be taken as limiting the scope of the present application. In addition, the drawings are only schematically showing the composition or configuration of the described objects and can contain exaggerated display, unless otherwise specified, and the drawings are not necessarily drawn to scale.

[0072] Figure 1 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0073] Figure 2 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0074] Figure 3 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0075] Figure 4 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0076] Figure 5 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0077] Figure 6 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0078] Figure 7 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0079] Figure 8 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0080] Figure 9 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0081] Figure 10 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0082] Figure 11 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0083] Figure 12 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls;

[0084] Figure 13 Schematic diagram of the application of the retractable electric louver curtain control system to a sunshade with louvered walls; DETAILED DESCRIPTION

[0085] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0086] In the description of the present invention, it should be noted that the terms "upper," "lower," "front," "back," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate description and simplify the present invention, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first" and "second" are used solely to facilitate understanding and have no other directional meanings, and should not be construed as limitations on the present invention.

[0087] like Figure 1 The awning 200 with a louver curtain wall provided in this embodiment is shown, comprising a louver roof 201 at the top and louver curtain walls 202 at the side. The louver curtain walls 202 are equipped with the retractable electric louver curtain control system 100 provided in this embodiment.

[0088] Specifically, the retractable electric blinds control system 100:

[0089] like Figures 2 to 6 As shown, the retractable electric Venetian blind control system 100 includes a frame 10 , a Venetian blind 20 , a drive motor (not shown in the figure), a transmission assembly 30 and a linkage assembly 40 .

[0090] The frame 10 includes an upper frame 11, a lower frame 12, and two side frames 13. A louver curtain 20 is disposed within the area enclosed by the upper frame 11, the lower frame 12, and the side frames 13. The louver curtain 20 comprises a plurality of louvers 21 arranged longitudinally within the frame 10. The louvers 21 are arranged substantially parallel and uniformly longitudinally, with their ends flexibly connected between the side frames 13.

[0091] In this embodiment, the transmission assembly 30 and the linkage assembly 40 are basically symmetrically arranged on both sides of the frame 10. Therefore, the transmission assembly 30 and the linkage assembly 40 on one side and the connection relationship and matching method between them and each louver 21 are specifically described below, and the other side is not repeated.

[0092] like Figure 5 and Figure 6As shown, the transmission assembly 30 includes a driving pulley 31, a driven pulley 32, and a timing belt 33. The driving pulley 31 is fixed to the inner end surface of the upper frame 11 by an upper fixing bracket G1, while the driven pulley 32 is fixed to the inner end surface of the lower frame 12 by a lower fixing bracket G2. The timing belt 33 is located within the side frame 13. Its inner annular surface is wound around the outer circumference of the driving pulley 31 and the outer circumference of the driven pulley 32, thereby longitudinally traversing the interior of the side frame 13 to connect the driving pulley 31 and the driven pulley 32.

[0093] The driving motor is arranged in the upper frame 11 (not shown in the figure), and the driving wheel 31 is connected to the driving motor through the driving shaft Z. Thus, the driving motor drives the driving wheel 31 to rotate through the driving shaft 31Z, and with the assistance of the driven wheel 32, drives the synchronous belt 33 to rotate around the driving wheel 31 and the driven wheel 32.

[0094] like Figure 5 and Figure 6 As shown, the linkage assembly 40 is located in the side frame 13 and is arranged in front and behind the synchronous belt 33. It includes an active link 41 and a plurality of swing links 42 arranged longitudinally in the side frame 13. A folding link 43 is connected between two adjacent swing links 42, so that all the swing links 42 on the same side are connected in series into a vertical column by the folding link 43 to form a linkage.

[0095] Furthermore, if Figure 5 As shown, a longitudinal opening F is defined on the inner sidewall of the side frame 13. Multiple tilting shaft seats 22 are disposed within the longitudinal opening F, each of which is movable longitudinally along the longitudinal opening F. Each end of each louver 21 is connected to a corresponding swing link 42 via a tilting shaft seat 22. The swing link 42 drives the connected louver 21 to rotate synchronously. A series of folding links 43 connect the entire row of swing links 42 in series, creating a linkage. This also creates a linkage between the entire row of louvers 21, allowing the louver curtain 20 to open and close synchronously.

[0096] like Figure 5 、 Figure 8 and Figure 10 As shown, a linkage seat 34 is fixedly mounted on the synchronous belt 33 and is capable of longitudinal movement as the synchronous belt 33 rotates. One end of the active link 41 is pivotally connected to the linkage seat 34, and the other end is pivotally connected to the end of a first swing link 42a. The first swing link 42a is connected to the end of the first louver 21a via a first tilting shaft seat 22a. In this embodiment, the first swing link 42a is the bottommost swing link 42, the first tilting shaft seat 22a is the bottommost tilting shaft seat 22, and the first louver 21a is the bottommost louver 21.

[0097] like Figure 10 and Figure 11As shown, a track groove 14 is longitudinally provided in the side frame 13 , and a sliding trolley 50 is provided in the track groove 14 and can slide longitudinally along the track groove 14 . The sliding trolley 50 is connected to the linkage seat 34 .

[0098] Specifically, in this embodiment, the track groove 14 is longitudinally disposed on the inner bottom wall of the side frame 13. The bottom wall of the track groove 14 is also the inner bottom wall of the side frame 13. The sliding trolley 50 includes a frame 51, which is connected to the linkage seat 34 via a trolley connecting rod 52. A set of bottom wheels 53 are provided on the upper and lower sides of the frame 51, and a set of side wheels 53 are provided on the upper and lower sides of the frame 51. The bottom wheels 53 can roll on the bottom wall of the track groove 14, which is also the inner bottom wall of the side frame 13, and the side wheels can roll on the side walls of the track groove 14. As a result, the sliding trolley 50 is confined within the track groove 14 and can slide stably longitudinally along the length of the track groove 14.

[0099] The retractable electric blind control system 100 provided in this embodiment can be driven by a drive motor to drive the transmission assembly 30, and then the transmission assembly 30 controls the opening and closing of the blind 20 through the linkage assembly 40. The control method of the retractable electric blind control system 100 provided in this embodiment is described in detail below:

[0100] With the blinds 20 in the Figure 2 As shown in the fully lowered closed state, the initial state is taken as an example. At this time, all the shutters 21 are in the longitudinal closed state, and the linkage seat 34 is located as shown in FIG. Figure 7 The control method of the retractable electric blind control system 100 is as follows:

[0101] like Figure 7 and Figure 8 As shown, step 1: the driving motor drives the driving wheel 31 to Figure 7 The first direction D1 shown rotates, and with the assistance of the driven pulley 32, the synchronous belt 33 is driven to rotate in the first direction D1, and the linkage seat 34 moves longitudinally from the first position L1 to the second position L2;

[0102] The linkage seat 34 drives the active link 41 to push the first swing link 42a to rotate from the longitudinal direction to the transverse direction, and synchronously drives the first louver 21a to flip from the longitudinal closed state to the transverse open state;

[0103] Under the linkage transmission of each folding link 43, each swing link 42 synchronously drives the shutter 21 connected to it to flip from the longitudinal closed state to the transverse open state;

[0104] Until the linkage seat 34 reaches the second position L2, each swing link 42 rotates to the horizontal direction, and each shutter 21 flips to the horizontal open state. At this time, the shutter curtain 20 is as shown in FIG. Figure 3 Shown in the lowered, open position.

[0105] As shown in Figure 8 and Figure 9 , step 2: the driving motor drives the driving wheel 31 to continue rotating in the first direction D1, under the assistance of the driven wheel 32, the synchronous belt 33 is driven to rotate in the first direction D1, and the linkage seat 34 starts to move upward and longitudinally from the second position L2;

[0106] The linkage seat 34 pushes the first swing link 42a to move upward, the first swing link 42a moves upward and approaches the adjacent swing link 42 above it, and the folding link 43 between the two is folded inward until the first swing link 42a and the adjacent swing link 42 above it are stacked and moved upward;

[0107] By analogy, in turn, each swing link 42 is pushed by the linkage seat 34 to move upward layer by layer from bottom to top, and when the adjacent two swing links 42 approach each other, the folding link 43 between them is folded inward;

[0108] Each swing link 42 drives the respective connected louver 21 to move upward layer by layer from bottom to top in synchronization, so that the louver curtain 20 is retracted from bottom to top;

[0109] When the linkage seat 34 pushes the folding link 42 upward to be stacked together, the linkage seat 34 reaches the third position L3; at this time, as shown in Figure 4 , all the louvers 21 are stacked at the upper end of the frame 10, and the louver curtain 20 is completely retracted.

[0110] As shown in Figure 8 and Figure 9 , step 3: the driving motor drives the driving wheel 31 to rotate in the second direction D2 opposite to the first direction D1 as shown in Figure 9 , under the assistance of the driven wheel 32, the synchronous belt 33 is driven to rotate in the second direction D2, and the linkage seat 34 starts to move downward and longitudinally from the third position L3;

[0111] Under the assistance of the gravity of each swing link 42, each swing link 42 moves downward layer by layer from top to bottom, and when the adjacent two swing links 42 move away from each other, the folding link 43 between them is unfolded until it is unfolded to the limit length, and the adjacent two swing links 42 return to the initial distance between them;

[0112] Under the assistance of the gravity of each louver 21, each louver 21 moves downward layer by layer from top to bottom in synchronization with the respective connected swing link 42 until it returns to the initial position, so that the louver curtain 20 is lowered from top to bottom;

[0113] When the linkage seat 34 returns to the second position L2, all the folding links 43 are unfolded, and all the swing links 42 and the louvers 21 return to the initial positions, the louver curtain 20 is completely lowered, and returns to as Figure 3 Shown in the lowered, open position.

[0114] like Figure 7 and Figure 8 As shown, step 4: the driving motor drives the driving wheel 31 to rotate in the second direction D2, and with the assistance of the driven wheel 32, drives the synchronous belt 33 to rotate in the second direction D2, and moves the linkage seat 34 longitudinally from the second position L2 to the first position L1;

[0115] The linkage seat 34 drives the active link 41 to pull the first swing link 42a to rotate from the horizontal to the vertical direction, and synchronously drives the first louver 21a to flip from the horizontal open state to the vertical closed state;

[0116] Under the linkage transmission of each folding link 43, each swing link 42 synchronously drives the shutter 21 connected to it to flip from the horizontal open state to the longitudinal closed state;

[0117] The linkage seat 34 comes to the first position L1, each swing link 42 rotates to the longitudinal direction, each shutter 21 flips to the longitudinal closed state, and the shutter curtain 20 returns to the state as shown in FIG. Figure 2 The initial state shown is the devolved closed state.

[0118] It should be noted that, in this embodiment, the first position L1 is the lowest, close to the bottom end of the side frame 13, the third position L3 is the highest, close to the top end of the side frame 13, and the second position L2 is above the first position L1. The longitudinal distance between the second position L2 and the first position L1 is related to the rotation radius of the swing link 42.

[0119] During steps 1 and 4, the drive motor may be stopped midway, causing the linkage seat 34 to remain at any position between the first position L1 and the second position L2, thereby placing the Venetian blind 20 in a partially open or partially closed state to adjust the brightness of light entering through the Venetian blind 20. Furthermore, when the drive motor is restarted, it may be rotated again in the first direction D1 or the second direction D2, causing the linkage seat 34 to move from the stopped position back to the first position L1 or the second position L2, thereby selectively opening or closing the Venetian blind 20.

[0120] Similarly, during steps 2 and 3, the drive motor can be stopped midway, allowing the linkage seat 34 to remain at any position between the second position L2 and the third position L3, placing the Venetian blind 20 in a semi-retracted state. Furthermore, when the drive motor is restarted, it can be rotated again in the first direction D1 or the second direction D2, allowing the linkage seat 34 to move from the rest position to the second position L2 or the third position L3, thereby selecting whether to retract or lower the Venetian blind 20. This allows for flexible control of the opening and closing modes of the Venetian blind 20.

[0121] In steps 2 and 3, since the ends of the louvers 21 are connected to the swing links 42 through the flip shaft seats 22, when the louvers 21 and the swing links 42 are recovered and lowered, the flip shaft seats 22 are stacked and moved upward layer by layer from bottom to top or separated and moved downward layer by layer from top to bottom in the longitudinal opening F, thereby providing a first level of stable guiding effect, that is, playing a stable guiding role for the up and down longitudinal movement of the swing links 42 and the louvers 21.

[0122] In steps 1 to 4, since the linkage seat 34 is connected to the sliding trolley 50, when the synchronous belt 33 drives the linkage seat 34 to move longitudinally between the first position L1, the second position L2 and the third position L3, the sliding trolley 50 synchronously slides longitudinally along the track groove, thereby providing a second level of stable guiding effect, that is, maintaining stable operation when the synchronous belt 33 drives the linkage seat 34.

[0123] Especially when the retractable electric Venetian blind control system 100 is used in a scenario such as the awning 200 with a Venetian blind curtain wall provided in this embodiment, or in a taller Venetian blind curtain wall such as a building curtain wall, the blinds 21 have a large weight, and the stability required for flipping the blinds is higher. In addition, the distance the blind 20 moves when it is retracted or lowered is long, and the synchronous belt 33 is prone to shaking, resulting in unstable movement of the linkage seat 34. At the same time, the length of the linkage assembly 40 is also long, and the requirement for stable coordination between the transmission assembly 30 and the linkage assembly 40 is also higher. In this case, the retractable electric Venetian blind control system 100 provided in this embodiment has more significant advantages over the existing technology. With the ingenious coordination between the side frame 13, the transmission assembly 30, and the linkage assembly 40, it has stronger stability.

[0124] Furthermore, the transmission assembly 30 provided in this embodiment achieves a significant reduction in components compared to the prior art. The key lies in the arrangement of the linkage seat 34 and its cooperation with the active link 41 and the first swing link 42a in the linkage assembly 40 to form a transmission linkage joint. By combining the aforementioned two levels of stable guidance guarantees, the synchronous belt 33 passing through the side frame 13 up and down completes the transmission operation of the blind curtain 20.

[0125] In addition, the frame 10 of the retractable electric blind control system 100 provided in this embodiment is not just a supporting component. In addition to the aforementioned track groove 14 structure that cooperates with the slide trolley 50, the longitudinal opening F cooperates with the flip shaft seat 22 to play a stabilizing and guiding role.

[0126] like Figure 12As shown, a shaft hole H is formed laterally through the tilting shaft seat 22. A connecting post E protrudes from the end of the louver 21. The connecting post E includes a shaft connection portion E1 that mates with the shaft hole H, and a stopper portion E2 at the front end of the shaft connection portion E1. The shaft connection portion E1 is inserted into the shaft hole H of the tilting shaft seat 22, thereby forming a tilting shaft connection between the louver 21 and the tilting shaft seat 22. The stopper portion E2 is inserted into the corresponding swing link 42, thereby forming a circumferentially limited connection between the louver 21 and the swing link 42.

[0127] Therefore, when the swing link 42 drives the louver 21 connected to it to flip, the flip shaft seat 22 does not move. However, when the swing link 42 drives the louver 21 to move up and down longitudinally, the flip shaft seat 22 moves up and down longitudinally along the longitudinal opening F, thereby achieving its first level of stable guiding effect.

[0128] like Figure 11 As shown, longitudinally extending cylindrical reinforcing ribs F1 are provided on both sides of the longitudinal opening F. Raised retaining strips F2 are provided along the length of the reinforcing ribs F1. The reinforcing ribs F1 not only strengthen the mechanical strength of the longitudinal opening F, but also, together with the retaining strips F2, form a track for the longitudinal movement of the flip shaft seat 22. Longitudinal retaining grooves F3 are recessed on both sides of the flip shaft seat 22. The flip shaft seat 22 is retained in the longitudinal opening F, and the retaining strips F2 engage within the retaining grooves F3, allowing the flip shaft seat 22 to move vertically up and down along the track of the longitudinal opening F.

[0129] The two sides of the slot F3 of the flip shaft seat 22 further extend to both sides to form an arc-shaped wrapping groove F4 that matches the outer peripheral surface of the reinforcement rib F1. The slot F3 is clamped on the clamping strip F2, and the wrapping groove F4 wraps a part of the reinforcement rib F1 on both sides of the clamping strip F2, further ensuring that the flip shaft seat 22 moves stably on the shaft seat track.

[0130] like Figure 5 、 Figure 7 and Figure 8 As shown, a pivot pin 16 is fixed to the bottom end of the side frame 13. The lower end of this pivot pin 16 is fixed to the lower fixing bracket G2 and extends upward. When the louver 21 is in the horizontally open position, the louver curtain 20 is gradually lowered until it is fully lowered. When the linkage seat 34 returns to the second position L2, this pivot pin 16 abuts against the first tilting pivot seat 22a, thereby limiting the lowest position to which the louver curtain 20 can be lowered.

[0131] Furthermore, when the linkage seat 34 moves longitudinally from the second position L2 to the first position L1, the linkage seat 34 drives the active link 41 to pull the first swing link 42a to rotate from the horizontal to the longitudinal direction, and the axle seat top rod 16 presses against the first flip axle seat 22a, on the one hand preventing the longitudinal position of the first swing link 42a from moving downward, and on the other hand serving as a lever fulcrum for the first swing link 42a to rotate from the horizontal to the longitudinal direction.

[0132] like Figures 8 to 10 As shown, an inwardly extending lifting rod 35 is provided on the linkage base 34. When the linkage base 34 moves further upward longitudinally from the second position L2, the lifting rod 35 lifts the first swing link 42a from bottom to top. At this time, the active link 41 is axially connected to and supports one end of the first swing link 42a, and the lifting rod 35 supports the other end of the first swing link 42a. The active link 41 and the lifting rod 35 lift the first swing link 42a to a substantially horizontal position. As the linkage base 34 moves upward, the upper swing links 42 are lifted layer by layer, with the first swing link 42a as the base, ensuring that each louver 21 is lifted smoothly during retraction.

[0133] like Figure 13 Combine Figures 7 to 9 As shown, two folding links 43 are axially connected between two adjacent swing links 42, and each folding link 43 is axially connected to the two longitudinally opposite end portions of the two swing links 42 at upper and lower axes, so that the two adjacent swing links 42 and the two folding links 43 axially connected therebetween form a linkage unit 40a, and a series of linkage units 40a are connected in series to form a longitudinal linkage assembly 40 in this embodiment.

[0134] like Figure 13 As shown, the folding link 43 includes a first support rod 43a and a second support rod 43b that are axially connected to each other. The second support rod 43b is provided with a boss T at the axial connection between the first support rod 43a and the second support rod 43b, so that a folding angle R of less than 180 degrees is formed between the first support rod 43a and the second support rod 43b and the folding angle is opened outward. In other embodiments, the boss T can also be provided on the first support rod 43a.

[0135] When the longitudinal distance between two adjacent swing links 42 is the farthest, the folding angle R of the two folding links 43 between them is the largest and the vertex distance is the farthest; when the two adjacent swing links 42 approach each other and the longitudinal distance shortens, the folding angle R of the two folding links 43 between them gradually becomes smaller and the vertex distance gradually approaches, thereby ensuring that both folding links 43 are folded inward until the two adjacent swing links 42 overlap each other and the two folding links 43 are folded inward between the two adjacent swing links 42.

[0136] like Figure 7 and Figure 8 As shown, a brake rope 44 and an auxiliary spring 45 are provided at the top of the linkage assembly 40. The upper ends of the brake rope 44 and the auxiliary spring 45 are fixedly connected to the upper fixed frame G1 at the upper end of the frame 10. The lower end of the brake rope 44 is connected to one end of the uppermost second swing link 42b, and the lower end of the auxiliary spring 45 is connected to the other end of the second swing link 42b.

[0137] When the shutter 21 is in a laterally open state, the brake rope 44 is tightened to assist the shutter 21 to maintain a basically horizontal state, and the auxiliary spring 45 is basically relaxed; when the shutter 21 is in a longitudinally closed state, the brake rope 44 is relaxed, and the auxiliary spring 45 is stretched to store force; when the shutter 21 flips from the longitudinally closed state to the laterally open state, the restoring force of the contraction of the auxiliary spring 45 can assist the flipping of the shutter 45.

[0138] like Figure 6 As shown, a transmission rack C1 is evenly distributed on the inner ring surface of the synchronous belt 33, and a drive rack C2 is evenly distributed on the outer circumference of the driving wheel 31 and the driven wheel 32. The drive racks C2 of the driving wheel 31 and the driven wheel 32 are engaged with the transmission rack C1 of the synchronous belt 33 to drive the synchronous belt 33 to rotate around the driving wheel 31 and the driven wheel 32.

[0139] The linkage seat 34 is clamped on the synchronous belt 33 by screws to be fixed to the synchronous belt. A clamping rack (not shown in the figure) that meshes with the transmission rack C1 is provided on one side of the inner ring surface of the driving seat 34 that clamps the synchronous belt 33, making the fixed connection between the two more secure. When the synchronous belt 33 drives the driving seat 34 to move up and down longitudinally, the engagement between the transmission rack C1 and the clamping rack further plays a longitudinal limiting function, preventing the linkage seat 34 from falling off from the synchronous belt 33 under the action of the gravity of the heavy louvers 21.

[0140] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0141] The above describes the retractable electric Venetian blind control system and control method provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are intended only to facilitate understanding of the present invention and its core concepts. It should be noted that those skilled in the art will appreciate that various improvements and modifications may be made to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims.

Claims

1. Retractable electric blinds control system, characterized by: It includes a frame, a louver curtain, a drive motor, a transmission assembly and a linkage assembly; the frame includes an upper frame, a lower frame and two side frames; the louver curtain is composed of a plurality of louvers arranged longitudinally in the frame; Each of the louvers is movably connected between the two side frames, the drive motor drives the transmission assembly, and the transmission assembly controls the opening, closing, and retraction of the louver curtain through the linkage assembly; The transmission assembly includes a driving wheel, a driven wheel and a synchronous belt; the synchronous belt connects the driving wheel and the driven wheel; the driving motor can drive the driving wheel to rotate, thereby driving the synchronous belt to rotate around the driving wheel and the driven wheel; The driving wheel is located in the upper frame, the driven wheel is located in the lower frame, and the synchronous belt is located in the side frame; The linkage assembly is located in the side frame and includes an active link, a plurality of swing links arranged longitudinally in the side frame, and a folding link connected between two adjacent swing links; The end of each louver is connected to the swing link at the corresponding position through a flip shaft seat, and the swing link can drive the louver connected thereto to rotate synchronously; The side frame is provided with a longitudinal opening, the flip shaft seat is arranged in the longitudinal opening and can move longitudinally along the longitudinal opening; A linkage seat is fixedly provided on the synchronous belt; one end of the active link is axially connected to the linkage seat, and the other end is axially connected to the end of the first swing link; the first swing link is connected to the end of the first louver through the first flip shaft seat; A track groove is longitudinally provided in the side frame, and a sliding trolley is provided in the track groove and can slide longitudinally along the track groove; the sliding trolley is connected to the linkage seat; When the driving motor drives the driving wheel to rotate, driving the synchronous belt to rotate, causing the linkage seat to move longitudinally between the first position and the second position, the linkage seat drives the active link to push and pull the first swing link to rotate, synchronously driving the first louver to flip and switch between the longitudinal closed state and the transverse open state; Under the linkage transmission of each folding link, each swing link synchronously drives the shutter connected to it to flip and switch between the longitudinal closed state and the transverse open state, thereby closing or opening the shutter curtain; When the driving motor drives the linkage seat to move longitudinally upward from the second position, the linkage seat pushes the first swing link to move upward, and then each of the swing links moves upward layer by layer from bottom to top, and each of the flip shaft seats moves upward layer by layer from bottom to top in the longitudinal opening, and drives the connected louvers to move upward layer by layer from bottom to top synchronously, so that the louver curtains are recovered from bottom to top; When the synchronous belt drives the linkage seat to move longitudinally, the sliding trolley synchronously slides longitudinally along the track groove to maintain the stable operation of the synchronous belt; The sliding trolley includes a frame, and the frame is connected to the linkage seat through a trolley connecting rod; The bottom of the frame is provided with a plurality of bottom wheels, and the side is provided with a plurality of side wheels; the bottom wheels roll on the bottom wall of the track groove, and the side wheels roll on the side walls of the track groove, so that the sliding trolley slides along the track groove; The flip shaft seat is provided with a shaft hole extending through the side thereof; A connecting column is protruding from the end of the louver, and the connecting column includes a shaft connecting portion matching the shaft hole, and a limiting portion at the front end of the shaft connecting portion; The shaft connection portion is inserted into the shaft hole so that the louver forms a flip shaft connection with the flip shaft seat; The limiting portion is inserted into the corresponding swing link so that the louver and the swing link form a circumferential limiting connection.

2. The retractable electric blind control system according to claim 1, characterized in that: The longitudinal opening is provided with longitudinally extending cylindrical reinforcing ribs on both sides, and the reinforcing ribs are provided with raised clips along the length direction; Longitudinal slots are recessed on both sides of the flip shaft seat. The flip shaft seat is clamped in the longitudinal opening, and the clamping strip is clamped in the slots.

3. The retractable electric blind control system according to claim 1, characterized in that: An axle seat top rod is fixedly provided at the bottom end of the side frame; When the louver curtain is fully lowered and the louver is in a horizontally opened state, the linkage seat is in the second position, and the shaft seat top rod abuts against the first flip shaft seat; When the linkage seat moves longitudinally from the second position to the first position, the linkage seat drives the active link to pull the first swing link to rotate from the horizontal to the longitudinal direction, and the axle seat top rod pushes against the first flip axle seat to prevent the longitudinal position of the first swing link from moving downward.

4. The retractable electric blind control system according to claim 1, characterized in that: The linkage seat is provided with a lifting rod extending inward; When the linkage seat moves further upward longitudinally from the second position, the lifting rod lifts the first swing link and moves from bottom to top.

5. The retractable electric blind control system according to claim 1, characterized in that: Two folding links are axially connected between two adjacent swing links, and each folding link is axially connected to two longitudinally opposite ends of the two swing links. The folding connecting rod comprises a first support rod and a second support rod axially connected to each other, wherein the first support rod or the second support rod is provided with a boss at the axial connection position thereof, so that a folding angle less than 180 degrees is formed between the first support rod and the second support rod with the opening facing outwards; When two adjacent swing links approach each other, the folding angles of the two folding links between them gradually decrease, so that both folding links fold inwards.

6. The retractable electric blind control system according to claim 1, characterized in that: A brake rope and an auxiliary spring are provided at the top end of the linkage assembly, and the upper ends of the brake rope and the auxiliary spring are fixedly connected to the frame; The lower end of the brake rope is connected to one end of the second swing link, and the lower end of the auxiliary spring is connected to the other end of the second swing link; When the shutter is in a horizontally open state, the brake rope is tightened; when the shutter is in a longitudinally closed state, the auxiliary spring is stretched and stored; When the shutter flips from a longitudinally closed state to a transversely opened state, the restoring force of the auxiliary spring assists the shutter in flipping.

7. The retractable electric blind control system according to claim 1, characterized in that: Transmission racks are evenly distributed on the inner annular surface of the synchronous belt, and drive racks are evenly distributed on the outer circumferences of the driving wheel and the driven wheel; The driving racks of the driving wheel and the driven wheel are engaged with the transmission rack of the synchronous belt to drive the synchronous belt to rotate around the driving wheel and the driven wheel.

8. The retractable electric blind control system according to claim 1, characterized in that: The linkage seat is clamped on the synchronous belt to be fixed to the synchronous belt; The first swing link is the lowest swing link, the first flip shaft seat is the lowest flip shaft seat, and the first louver is the lowest louver; The second position is higher than the first position.

9. The retractable electric blind control system according to claim 1, characterized in that: The driving motor is arranged in the upper frame, the driving wheel is fixed in the upper frame by the upper fixing frame and is connected to the driving motor through the driving shaft; the driven wheel is fixed in the lower frame by the lower fixing frame; The transmission components and linkage components are symmetrically arranged in the two side frames.

10. The control method of the retractable electric blind control system according to any one of claims 1 to 9, characterized in that: Step 1: The driving wheel rotates in a first direction, and with the assistance of the driven wheel, drives the synchronous belt to rotate in the first direction, thereby longitudinally moving the linkage seat from the first position to the second position; The linkage seat drives the active link to push the first swing link to rotate from the longitudinal direction to the transverse direction, and synchronously drives the first louver to flip from the longitudinal closed state to the transverse open state; Under the linkage transmission of each folding link, each swing link synchronously drives the shutter connected to it to flip from the longitudinal closed state to the transverse open state; When the linkage seat reaches the second position, each swing link rotates to the horizontal direction, each shutter flips to the horizontal open state, and the shutter curtain is in the downward open state; Step 2: The driving wheel rotates in the first direction, and with the assistance of the driven wheel, drives the synchronous belt to rotate in the first direction, and the linkage seat starts to move upward longitudinally from the second position; The linkage seat pushes the first swing link to move upward, and then the swing links are stacked and moved upward one by one from bottom to top. When two adjacent swing links approach each other, the folding link between them folds inward; Each swing link drives the connected louver to be stacked and moved upward layer by layer from bottom to top synchronously, so that the louver curtains are recovered from bottom to top; When the linkage seat pushes the folding link upwards until all of them are stacked together, the linkage seat reaches the third position; all of the blinds are stacked at the upper end of the frame, and the blinds are completely retracted; Step 3: The driving wheel rotates in the second direction, and with the assistance of the driven wheel, drives the synchronous belt to rotate in the second direction, and the linkage seat starts to move downward longitudinally; The swing links are separated and moved downward layer by layer from top to bottom, and when two adjacent swing links move away from each other, the folding link between them is unfolded; Each of the louvers is separated and moved downward layer by layer from top to bottom synchronously along with the swing connecting rods connected thereto, until returning to their respective initial positions, so that the louver curtains are lowered from top to bottom; When the linkage seat returns to the second position, all the folding links are unfolded, all the swing links and the blinds return to their respective initial positions, and the blinds are completely lowered; Step 4: The driving wheel rotates in the second direction, and with the assistance of the driven wheel, drives the synchronous belt to rotate in the second direction, and moves the linkage seat longitudinally from the second position to the first position; The linkage seat drives the active link to pull the first swing link to rotate from the horizontal to the vertical, and synchronously drives the first louver to flip from the horizontal open state to the vertical closed state; Under the linkage transmission of each folding link, each swing link synchronously drives the shutter connected to it to flip from the horizontal open state to the longitudinal closed state; When the linkage seat reaches the first position, each swing link rotates to the longitudinal direction, each shutter flips to the longitudinal closed state, and the shutter curtain is in the downward closed state.

11. The control method according to claim 10, characterized in that: In step 1 and step 4, the linkage seat can stay at any position between the first position and the second position, and can reselect to move to the first position or the second position from this position; In step 2 and step 3, the linkage seat can stay at any position between the second position and the third position, and can be reselected to move to the second position or the third position from this position.

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