Transmission box used in electric curtains

Abstract

This application is a divisional application. The application number of the original application is 202111164412.5, the filing date is September 30, 2021, and the name of the invention is “An electric curtain device”. The combination structure of an L-shaped base plate and an L-shaped upper cover can realize the installation of dual motors. In addition, the opening and closing motor and the dimming motor are installed perpendicular to each other, making the overall structure more compact, which does not take up too much installation space and is also conducive to the overall beauty of the curtain. In addition, the upper cover of this solution is directly snapped into the installation positioning box, so that after the opening and closing motor and the dimming motor are assembled on the base plate, they can be directly docked with the installation positioning at the end of the guide rail body, thereby realizing transmission docking, making the overall size small, not taking up too much installation space, and not affecting the beauty of the curtain.

Description

Technical Field

[0001] This application is a divisional application. The application number of the original application is 202111164412.5, the application date is September 30, 2021, and the name of the invention is "An electric curtain device". Background Art

[0002] With the development of technology, more and more smart furniture is appearing in people's lives. Smart homes are based on residential units and utilize IoT technology. A smart home ecosystem consisting of hardware, software systems, and cloud platforms provides users with a safe and convenient home living environment, improving their quality of life and comfort. Electric curtains are widely used because they can be electrically controlled by motors, eliminating the need for manual opening and closing of curtains. This is in line with the development trend of smart homes.

[0003] The diverse demands for curtain lighting have made dimmable curtains extremely popular. Dimmable curtains primarily adjust the amount of light passing through by adjusting the angle of the curtain blades. With the increasing automation of home products, curtain dimming is also trending towards automatic control. To this end, electric dimmable curtains require both opening and closing power and dimming power. The dimming power drives the transmission rod, which in turn connects to the hook, causing the hook to rotate horizontally, while the opening and closing power drives the hook to move horizontally. Existing dual-powered electric curtains have a complex arrangement of their two motors, requiring an additional motor box to install the motors. This results in a bulky guide rail and inconvenient assembly. Summary of the Invention

[0004] The purpose of the present invention is to provide a transmission box for electric curtains, which has a simple structure and can limit the dimmer rod from falling from the opening on the lower side of the shell, thereby effectively improving the installation efficiency.

[0005] Based on this, the present invention provides a transmission box for electric curtains, comprising an L-shaped bottom plate and an L-shaped top cover, wherein the long side of the L-shaped bottom plate is parallel to the guide rail body and the short side is perpendicular to the guide rail body;

[0006] The long side of the L-shaped bottom plate is used to install the opening and closing motor, and the short side of the L-shaped bottom plate is used to install the dimming motor and the dimming transmission wheel assembly;

[0007] The upper cover is buckled on the top of the bottom plate. A mounting groove is provided on the upper cover above the dimming motor. The mounting groove is used to mount an opening and closing transmission wheel assembly.

[0008] The transmission box used in the electric curtain as described above also includes an installation positioning box connected to the guide rail body, and the installation positioning box is clamped on the upper cover to enable the opening and closing transmission wheel set to dock with the active pulley, and enable the dimming transmission wheel set to drive the transmission rod to rotate.

[0009] As described above, the transmission box used for the electric curtain has a first opening on the side of the installation slot facing the installation positioning box, and a first transmission port on one side of the installation positioning box. When the installation positioning box is clamped on the upper cover, the first opening is opposite to the first transmission port.

[0010] As described above, the transmission box used for the electric curtain has a second opening on the side of the upper cover facing the installation positioning box, and a second transmission port on one side of the installation positioning box. When the installation positioning box is clamped on the upper cover, the second opening is opposite to the second transmission port.

[0011] In the transmission box used for the electric curtain as described above, the first opening is located above the second opening.

[0012] As described above, the transmission box applied to the electric curtain, the opening and closing transmission gear set includes a gear set and two second bevel gears meshing with each other, namely second bevel gear one and second bevel gear two, the gear set includes three transmission gears, namely an input gear, an intermediate gear and an output gear, wherein the input gear is close to one end of the opening and closing motor assembly and is coaxially arranged with the second bevel gear two, the second bevel gear one is connected to the output end of the opening and closing motor, the intermediate gear is located in the mounting groove and meshes with the input gear and the output gear, and the output gear is located in the mounting positioning box and is coaxially mounted with the driving pulley.

[0013] As described above, the transmission box applied to the electric curtain, the dimming transmission gear set includes two mutually meshing first bevel gears, namely the first bevel gear 1 and the first bevel gear 2, the angle between the axes of the first bevel gear 1 and the first bevel gear 2 is 90°, wherein the first bevel gear 1 is coaxially connected to the output end of the dimming motor, and the indexing cone angles of the first bevel gear 1 and the first bevel gear 2 are both 45°.

[0014] As described above, the transmission box used for the electric curtain is provided with a first mounting structure for mounting the first bevel gear 2 on the dimming transmission gear set, and a second mounting structure for mounting the output gear on the opening and closing transmission gear set. The first mounting structure includes a supporting portion for supporting the rotating shaft of the first bevel gear 2 and a through hole portion adapted to the connecting sleeve of the transmission rod, and the second mounting structure includes a supporting shaft portion for mounting the driving pulley and the rotating shaft of the output gear.

[0015] The implementation of the embodiments of the present invention has the following beneficial effects:

[0016] 1. The present invention provides a transmission box for electric curtains, which adopts a combined structure of an L-shaped bottom plate and an L-shaped upper cover, can realize the installation of dual motors, and makes the opening and closing motor and the dimming motor roughly perpendicular to each other. This makes the overall structure more compact, does not take up too much installation space, and is also conducive to the overall beauty of the curtains.

[0017] 2. The upper cover of this solution is directly snapped into the mounting positioning box, so that after the opening and closing motor and the dimming motor are assembled on the base plate, they can be directly docked with the mounting positioning at the end of the guide rail body, thereby realizing transmission docking, making the overall size small, not taking up too much installation space, and not affecting the beauty of the curtains. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 Schematic diagram of the overall external appearance of an embodiment of the present invention.

[0020] Figure 2 Schematic diagram of the installation structure in the track body in an embodiment of the present invention.

[0021] Figure 3 Schematic diagram of another installation structure in the track body in an embodiment of the present invention.

[0022] Figure 4 Schematic diagram of the installation structure of the pulley in an embodiment of the present invention.

[0023] Figure 5 Schematic diagram of the structural decomposition of the pulley in an embodiment of the present invention.

[0024] Figure 6 Schematic diagram of the cross-sectional structure of the pulley and the hook in an embodiment of the present invention.

[0025] Figure 7 Schematic diagram of the installation of various components inside the track body in an embodiment of the present invention.

[0026] Figure 8 Schematic diagram of the installation of the locking support and the first pulley in an embodiment of the present invention.

[0027] Figure 9 Schematic diagram of the installation of the first pulley and the transmission belt in an embodiment of the present invention.

[0028] Figure 10Schematic diagram of the structure and connection of the transmission rod in an embodiment of the present invention.

[0029] Figure 11 FIG. 2 is another structural schematic diagram of a transmission rod in an embodiment of the present invention.

[0030] Figure 12 FIG. 2 is another structural schematic diagram of a transmission rod in an embodiment of the present invention.

[0031] Figure 13 FIG. 2 is another structural schematic diagram of a transmission rod in an embodiment of the present invention.

[0032] Figure 14 Schematic diagram of the structure and installation of the locking support member in an embodiment of the present invention.

[0033] Figure 15 Schematic diagram of the structure of the locking support member in an embodiment of the present invention.

[0034] Figure 16 Schematic diagram of the structural decomposition of the locking support member in an embodiment of the present invention.

[0035] Figure 17 Schematic diagram of the layout of the track assembly and the drive assembly in an embodiment of the present invention.

[0036] Figure 18 Schematic diagram of the structure and layout of the opening and closing driving component and the dimming driving component in an embodiment of the present invention.

[0037] Figure 19 2 is a schematic diagram of the structure and layout of the opening and closing driving component and the dimming driving component from another perspective in an embodiment of the present invention.

[0038] Figure 20 Schematic diagram of the upper cover structure of the driving assembly in an embodiment of the present invention.

[0039] Figure 21 Schematic diagram of the installation of the upper cover of the drive assembly in an embodiment of the present invention.

[0040] Figure 22 Schematic diagram of the installation of the upper cover and the positioning box of the drive assembly in an embodiment of the present invention.

[0041] Figure 23 Schematic diagram of the installation of the positioning box of the drive assembly in an embodiment of the present invention.

[0042] Figure 24 This is a schematic diagram of the exploded installation of the positioning box of the drive assembly in an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] like Figures 20 to 24 As shown, an embodiment of the present invention provides a transmission box for electric curtains, including an L-shaped base plate 23 and an L-shaped upper cover 24, the long side of the L-shaped base plate 23 is parallel to the guide rail body 11, and the short side is perpendicular to the guide rail body 11; the long side of the L-shaped base plate 23 is used to install the opening and closing motor 211, and the short side of the L-shaped base plate 23 is used to install the dimming motor 221 and the dimming transmission wheel group; the upper cover 24 is snapped on the top of the base plate 23, and a mounting groove 241 is provided on the upper cover 24 above the dimming motor 221, and the mounting groove 241 is used to install the opening and closing transmission wheel group; it also includes an installation positioning box 25 connected to the guide rail body 11, and the installation positioning box 25 is clamped on the upper cover 24 to dock with the dimming transmission wheel group and the active pulley 121, and to enable the dimming transmission wheel group to drive the transmission rod 13 to rotate. The present invention provides a transmission box for electric curtains, which adopts a combined structure of an L-shaped base plate and an L-shaped upper cover, can realize the installation of dual motors, and the opening and closing motor and the dimming motor are installed perpendicular to each other, so that the overall structure is more compact, does not occupy too much installation space, and is also beneficial to the overall beauty of the curtains. In addition, the upper cover of this solution is directly snapped into the installation positioning box, so that after the opening and closing motor and the dimming motor are assembled on the base plate, they can be directly docked with the installation positioning at the end of the guide rail body, thereby realizing transmission docking, making the overall size small, not occupying too much installation space, and not affecting the beauty of the curtains.

[0045] Specifically, if Figure 1 、 Figure 17 The drive assembly 2 is arranged at one end of the track body 11 near the driving pulley 121. The drive assembly 2 includes an opening and closing drive component 21 and a dimming drive component 22. The opening and closing drive component 21 includes an opening and closing motor component and an opening and closing transmission gear set that are connected to each other. In this embodiment, the opening and closing motor component includes an opening and closing motor 211 and an opening and closing motor gearbox 212 that are coaxially mounted. The opening and closing motor gearbox 212 can also be coaxially connected to a clutch 219, and the output shaft of the clutch 219 is further connected to the opening and closing transmission gear assembly. A first O-ring 218 is provided at the connection between the opening and closing motor 211 and the opening and closing motor gearbox 212 for shock absorption and silencing during operation.

[0046] like Figure 18 、 Figure 19The dimming drive component 22 includes a dimming motor assembly and a dimming transmission gear set connected to each other. The dimming motor assembly includes a dimming motor 221 and a dimming motor gearbox 222 installed on a coaxial line. A second O-ring 226 is also provided at the connection between the dimming motor 221 and the dimming motor gearbox 222 for shock absorption and noise reduction during operation.

[0047] The opening and closing motor assembly is linear as a whole and is parallel to the track body 11. The dimming motor assembly is linear as a whole and is perpendicular to the track body 11. The opening and closing motor assembly and the dimming motor assembly are arranged in an L-shape, and the opening and closing transmission gear set is located directly above the dimming drive component 22. Such a double-layer structure can integrate the entire dimming drive component 22 and the opening and closing transmission gear set in the same space, making the structure compact, and the opening and closing motor assembly is arranged in a narrow and long linear shape, parallel to the track body 11, and does not take up too much installation space, making the appearance of the entire curtain track beautiful.

[0048] As one embodiment, the opening and closing transmission gear set includes a gear set and two mutually meshing second bevel gears, namely second bevel gear 1 213 and second bevel gear 2 214. The gear set includes several transmission gears that mesh in sequence, wherein the transmission gear near one end of the opening and closing motor assembly is the input gear 215, and the transmission gear near the end of the driving pulley 121 of the transmission belt 12 is the output gear 217; the angle between the axes of the second bevel gear 1 213 and the second bevel gear 2 214 is 90°, wherein the second bevel gear 1 213 is connected to the output shaft of the opening and closing motor assembly, the second bevel gear 214 is coaxially connected to the input gear 215, and the output gear 217 is coaxially connected to the driving pulley 121 of the transmission belt 12. Compared with the worm gear transmission method, the transmission structure described above is more efficient and saves more space. In this embodiment, the gear set includes three transmission gears, namely input gear 215, intermediate gear 216 and output gear 217, and the transmission gears are all straight-toothed gears. The indexing cone angles of the second bevel gear 1 213 and the second bevel gear 2 214 are both 45°.

[0049] The dimming transmission gear set includes two intermeshing first bevel gears, namely first bevel gear 1 223 and first bevel gear 2 224. The angle between the axes of first bevel gear 1 223 and first bevel gear 2 224 is 90°. First bevel gear 1 223 is coaxially connected to the output shaft of the dimming motor assembly, and first bevel gear 2 224 is coaxially connected to the transmission rod 13. In this embodiment, the indexing cone angle of first bevel gear 1 223 and first bevel gear 2 224 is 45°.

[0050] In this embodiment, Figures 18 to 21The dimming drive component 22 also includes an L-shaped base plate 23 and an L-shaped upper cover 24, with one arm of the L-shaped structure being longer than the other. Generally speaking, the length of the dimming motor assembly is shorter than the length of the opening and closing motor assembly. The opening and closing motor assembly is mounted on the long arm of the L-shaped base plate 23, and the dimming motor assembly is mounted on the short arm of the L-shaped base plate 23. The upper cover 24 snaps onto the top of the base plate 23, enclosing both the opening and closing motor assembly and the dimming motor assembly. A mounting slot 241 is provided on the upper cover 24 above the dimming drive component 22. The opening and closing transmission gear set is mounted within the mounting slot 241, enabling modular positioning.

[0051] At the same time, if Figures 22 to 24 The driving assembly 2 is further provided with an installation positioning box 25, which is snapped onto the upper cover 24 to dock the opening and closing transmission wheel set with the active pulley 121, and to enable the dimming transmission wheel set to drive the transmission rod 13 to rotate.

[0052] Furthermore, the mounting groove 241 has a first opening 2401 on one side facing the mounting and positioning box 25, and a first transmission opening 2501 is provided on one side of the mounting and positioning box 25. When the mounting and positioning box 25 is snapped onto the upper cover 24, the first opening 2401 and the first transmission opening 2501 are opposite each other. This structure facilitates the transmission connection between the opening and closing transmission wheel set and the driving pulley 121.

[0053] In addition, the upper cover 24 has a second opening 2402 on the side facing the mounting and positioning box 25. A second transmission opening 2502 is also provided on one side of the mounting and positioning box 25. When the mounting and positioning box 25 is attached to the upper cover 24, the second opening 2402 and the second transmission opening 2502 are opposite each other. This structure facilitates the transmission and docking between the dimming transmission wheel assembly and the transmission rod 13.

[0054] Moreover, in this solution, the first opening 2401 is located above the second opening 2402, so that the overall size is compact, does not occupy too much installation space, and does not affect the beauty of the curtain.

[0055] The mounting and positioning box 25 is provided with a first mounting structure 251 for mounting the transmission rod 13 and the first bevel gear 224 of the dimming transmission gear set, and a second mounting structure 252 for mounting the driving pulley 121 of the transmission belt 12 and the output gear 217 of the opening and closing transmission gear set. In this embodiment, the first mounting structure 251 includes a supporting portion for supporting the rotating shaft of the first bevel gear 224 and a through-hole portion adapted to fit the connecting sleeve 225 of the transmission rod 13. The second mounting structure 252 includes a supporting shaft portion for mounting the rotating shaft of the driving pulley 121 and the output gear 217. The transmission rod 13 and the second bevel gear 214 of the dimming transmission gear set are mounted to the mounting and positioning box 25 via the first mounting structure 251, while the driving pulley 121 of the transmission belt 12 and the output gear 217 of the opening and closing transmission gear set are mounted to the mounting and positioning box 25 via the second mounting structure 252, thereby achieving modular installation.

[0056] During installation, the second bevel gear 214 is first connected to the connecting sleeve 225 of the transmission rod 13 and then installed on the first mounting structure 251. The coaxially connected driving pulley 121 and output gear 217 are then installed on the second mounting structure 252. The entire installation and positioning box 25 is then snapped onto the upper cover 24. This allows direct connection with the transmission rod 13, the second bevel gear 1 213, the intermediate gear 216 and other components to achieve modular installation and positioning. The installation positioning box 25 must also be matched with the upper cover 24, so that the exterior of the entire drive assembly 2 is a regular L-shape, which facilitates connection with the curtain track and ensures overall aesthetics.

[0057] The present invention also discloses an electric curtain device having the integrated drive device, such as Figure 1 、 Figure 17 As shown, it includes a track component 1 and a drive component 2. Figure 7 The track assembly 1 includes a track body 11 and a transmission belt 12, a transmission rod 13, a pulley 14, a linkage piece 18, a hook 15 and a locking support 16 arranged in the track body 11.

[0058] like Figure 2 、 Figure 3 As shown, the track body 11 is a hollow structure 131. In this embodiment, a rubber strip 19 is further provided in the track body 11. The cross section of the track body 11 is roughly rectangular. The four corners of the rectangle are provided with accommodating grooves. The two accommodating grooves at the top are first accommodating grooves 111, and the two accommodating grooves at the bottom are second accommodating grooves 112. Figure 7 、 Figure 23A driving pulley 121 and a driven pulley are respectively provided at both ends of the track body 11 near the top surface. The transmission belt 12 is looped around the driving pulley 121 and the driven pulley, and simultaneously looped around the two first receiving grooves 111 on the track body 11. Driven by the driving pulleys 121, the transmission belt 12 runs horizontally. The first receiving grooves 111 are provided with an avoidance notch 1111 for connecting the connecting member 17 connected to the transmission belt 12 without any gaps.

[0059] The second receiving groove 112 of the track body 11 is provided with an opening 1121. The rubber strip 19 includes an integrally arranged embedding portion 191 and a fitting portion 192. The embedding portion 191 is sized to fit within the second receiving groove 112 and the opening 1121 therein. The embedding portion 191 is embedded within the second receiving groove 112. The two rubber strips 19 are respectively fixed to the two second receiving grooves 112 via the embedding portions 191. The fitting portions 192 of the rubber strips 19 contact the inner side and inner bottom surfaces of the track body 11. During operation, the transmission rod 13 and the pulley 14 will collide with the track body 11 and its connected components, generating noise. The rubber strip 19 covers the inner side of the track body 11 to reduce the noise generated by the operation of the transmission rod 13 and other components.

[0060] like Figure 2 、 Figure 3 The two inner side surfaces of the track body 11 are symmetrically provided with ribs 114. The upper edge of the contact portion 192 of the rubber strip 19 abuts against the lower surface of the ribs 114, thereby limiting the position of the rubber strip 19. At the same time, pulleys 142 are provided on both sides of the pulley 14, and the two pulleys 142 run on the upper surfaces of the ribs 114 on both sides.

[0061] The top surface of the track body 11 has protruding edges 115 extending along both sides of the track length. These protruding edges 115 extend along the length of the track body 11 and are used to engage with the top mounting plate 3 of the curtain track. The top mounting plate 3 is provided with engaging grooves 31 that mate with these protruding edges 115. During installation, the top mounting plate 3 can be attached to the track body 11 by simply sliding the engaging grooves 31 of the top mounting plate 3 along the protruding edges 115 of the track body 11. This makes installation easy and eliminates the need for additional tools such as screws.

[0062] The transmission rod 13 is rotatably mounted below the transmission belt 12 and parallel to the track body 11, and is located in the middle of the cavity of the track body 11. Figure 3 、 Figure 4The plurality of pulleys 14 are mounted on the transmission rod 13 and are movable along the transmission rod 13. The outer shape of the pulleys 14 matches the internal cavity of the track body 11, allowing the pulleys 14 to move through the cavity of the track body 11. A transmission structure 144 is provided within the pulleys 14, and the hooks 15 are connected to the transmission structure 144. The transmission structure 144 is also connected to the transmission rod 13. The transmission structure 144 converts the vertical rotation of the transmission rod 13 into the horizontal rotation of the hooks 15.

[0063] The transmission structure 144 can adopt an existing structure or form that can transmit power between two staggered shafts, such as a turbine and worm structure, or a two-bevel gear structure. As one form, in this embodiment, Figure 5 、 Figure 6 The transmission structure 144 is mainly a turbine and worm structure, including a meshing turbine 1442 and a worm 1441. The worm 1441 is a hollow shaft structure, and its outer surface is provided with conventional spiral teeth meshing with the turbine 1442. The hollow shaft of the worm 1441 has a shape that is compatible with the outer cross-section of the transmission rod 13, or a sleeve 1443 is sleeved in the hollow shaft of the worm 1441, and the sleeve 1443 has a shape that is compatible with the outer cross-section of the transmission rod 13. The worm 1441 is inserted into the transmission rod 13 through the cooperation of the hollow shaft or the sleeve 1443 with the transmission rod 13, and can move along the direction of the transmission rod 13. The transmission rod 13 drives the worm 1441 to rotate by cooperating with the hollow shaft or the sleeve 1443. As an example, as shown in the figure, the transmission rod 13 is a hexagonal rod. The hollow shaft of the worm 1441 is fitted with a sleeve 1443, the inner surface of which is also hexagonal. The transmission rod 13 drives the worm 1441 through the sleeve 1443. The hook 15 is connected to the worm gear 1442 and is coaxial with the worm gear 1442. When the transmission rod 13 rotates vertically, it drives the worm 1441 to rotate vertically, which in turn drives the worm gear 1442 and the hook 15 to rotate horizontally.

[0064] In this embodiment, the pulley 14 includes, in addition to a transmission structure 144 and pulleys 142, a pulley body 141 and a linkage plate receiving plate 143. The pulley body 141 is provided with space and structure corresponding to the installation of the transmission structure 144. Pulleys 142 are mounted on both sides of the pulley body 141 and run along the ribs 114 on the inner side of the track body 11. The linkage plates 18 are mounted on the linkage plate receiving plate 143, and the linkage plates 18 are connected front to back. The first pulley 140 is connected to the transmission belt 12 via a connector 17. The connector 17 connects the first pulley 140 to the transmission belt 12, with one end of the connector connected to the transmission belt 12 and the other end connected to the first pulley 140. In this embodiment, the connecting member 17 includes a belt clamping member 171, a connecting plate 172 and a connecting column 173. The belt clamping member 171 is clamped on one side of the transmission belt 12. The belt clamping member 171 is connected to the upper surface of the connecting plate 172. One end of the connecting column 173 is connected to the lower surface of the connecting plate 172, and the other end of the connecting column 173 is connected to the first pulley 140.

[0065] The bottom of the track body 11 is provided with an opening slot 113 for allowing the hook 15 to pass through. One end of the hook 15 is connected to the transmission structure 144, and the other end extends out of the opening slot 113. The hook 15 is used to hang the curtain; Figures 7 to 9 The locking support 16 is installed in the middle position of the chute body. The locking support 16 mainly plays the role of supporting and locking the partition. The locking support 16 blocks the pulley 14 from passing through. Several pulleys 14 are separated on the left and right sides of the locking support 16, thereby dividing the entire curtain into left and right sides. At the same time, the transmission rod 13 is supported on the locking support 16, which plays the role of intermediate support for the transmission rod 13; the two pulleys 14 located on both sides of the locking support 16 are the first pulleys 140, that is, there is a first pulley 14 on the left and right sides respectively. 0, the two first pulleys 140 are respectively connected to two different sides of the transmission belt 12 through the connecting piece 17. In this way, when the transmission belt 12 rotates, the two sides move in different directions, driving the two first pulleys 140 to move in opposite directions, thereby realizing the simultaneous opening and closing of both sides of the curtain; the remaining pulleys 14 on both sides of the locking support 16 are sequentially connected to the first pulley 140 on the same side through the linkage piece 18, and the first pulley 140 drives the remaining pulleys 14 and the hooks 15 connected to the pulleys 14 to move in sequence to realize opening and closing.

[0066] As one implementation method, in this embodiment, Figure 2 、 Figure 10The transmission rods 13 are hollow structures 131. The two transmission rods 13 are connected by a connecting bar 20. The cross-section of the connecting bar 20 has a shape that matches the cross-section of the hollow structure 131 of the transmission rods 13. The connecting bar 20 is inserted into the two transmission rods 13 at both ends, thereby achieving internal connection of the transmission rods 13. The transmission rods 13 with a hollow structure 131 can achieve internal connection. The advantage of internal connection is that it does not affect the back and forth passage of the pulley 14, which can increase the width of the curtain. Another advantage of the hollow structure 131 is that it reduces the weight of the transmission rods 13 while increasing the outer diameter of the transmission rods 13, thereby increasing their rigidity and reducing the chance of bending. The increased outer diameter also makes it less likely to fall out of the open slot 113.

[0067] The transmission rod 13 can be a hollow hexagonal rod, rectangular rod or spline rod, wherein the cross section of the hollow structure 131 can be hexagonal, rectangular, flower-shaped or circular, and the connecting bar 20 can be a hexagonal, rectangular, flower-shaped or circular cross section that matches the cross section of the hollow structure 131 of the transmission rod 13. The combination of the two can have various implementation methods, such as Figure 2 、 Figure 10 The inner hollow is also a hexagonal hexagonal rod, such as Figure 11 The hexagonal rod with a rectangular interior is shown, Figure 12 The spline rod with a hexagonal interior is shown, Figure 13 The spline rod shown has a rectangular interior.

[0068] As one of the implementation methods, Figures 14 to 16 The locking support member 16 includes an operating component 161 and a supporting component 162. The operating component 161 includes a blocking portion 1611 and a connecting portion 1612 that are connected to each other. The connecting portion 1612 can pass through the opening groove 113 of the track body 11. The size of the blocking portion 1611 is larger than the opening groove 113, so that the blocking portion 1611 can extend out of the opening groove 113 of the track body 11. The connecting portion 1612 is connected to the middle part of the supporting component 162, so that a snap-fit ​​gap is formed between the blocking portion 1611 and the supporting component 162 to accommodate the bottom edge of the track body 11; the supporting component 162 is flat and can pass through the gap of the hook 15 on the curtain track. A supporting portion 1621 for supporting the transmission rod 13 is provided on the supporting component 162.

[0069] After the supporting component 162 passes through the opening slot 113 of the track body 11 in a flat posture and extends into the inner cavity of the track body 11, after the blocking portion is rotated 90 degrees, the connecting portion 1612 is located in the opening slot 113, and the bottom edge of the track body 11 is just engaged in the engaging gap between the blocking portion 1611 and the supporting component 162. At the same time, the transmission rod 13 just falls onto the supporting portion 1621, which supports the transmission rod 13. Moreover, since the locking support 16 is fixed to the track body 11, it can prevent the pulley 14 from sliding in the track body 11, and can separate the pulley 14 on the track body 11 into left and right sides, so that the curtain can be opened and closed on both sides, and it can also limit the pulley 14 located in the middle. The disassembly process is the opposite. It only requires rotating the blocking portion 1611 90 degrees to be parallel to the opening slot 113 of the track body 11, and it can fall off from the track body 11 without any additional tools.

[0070] In this embodiment, the support member 162 is flat and shaped like a Chinese character "⊥." This ⊥-shaped structure forms two support portions 1621. These two support portions 1621 ensure that the transmission rod 13 can rest on one of the support portions 1621 regardless of the direction in which the blocking portion 1611 is rotated 90 degrees. A friction sleeve 163 is sleeved over the blocking portion 1611. The friction sleeve 163 is engraved with friction teeth 1631 at the location where it contacts the bottom edge of the track body 11 to increase friction and prevent the locking support member 16 from sliding on the track body 11. The friction sleeve 163 also facilitates the user's rotation of the blocking portion 1611. The friction sleeve 163 can be made of rubber or plastic.

[0071] In this embodiment, the connecting portion 1612 is roughly columnar and can rotate arbitrarily in the opening slot 113 of the rail body 11. The blocking portion 1611 and the connecting portion 1612 are integrated. The supporting member 162 is provided with a connecting hole 1622 adapted to one end of the connecting portion 1612, and the bottom of the connecting hole 1622 is also provided with a threaded hole (such as Figure 4 The second threaded hole 1623 in the connecting portion 1612 is also provided with a threaded hole (such as Figure 4 The first threaded hole 1613 in the middle), the connecting part 1612 is inserted into the connecting hole 1622 and then the long screw 164 passes through the two threaded holes (the first threaded hole 1613 and the second threaded hole 1623) in sequence to connect with the connecting part 1612, thereby improving the firmness of the connection.

[0072] In order to facilitate installation and disassembly, in this embodiment, Figure 7The aforementioned locking supports 16 are also installed at both ends of the track body 11, near the outermost pulleys 14. These prevent the outermost pulleys 14 from sliding. The locking supports 16 lock the two outermost pulleys 14 to the ends of the track body 11, preventing light leakage from both sides of the curtain. The locking supports 16 are installed near the outermost pulleys 14, as close as possible to the walls on both sides of the curtain, so that the position of the two outermost pulleys 14 is fixed and prevents them from moving along the track body 11. The locking supports 16 can also be installed at any position on the track body 11 according to the user's actual application scenario.

[0073] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information. In addition, the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0074] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. The transmission box used in electric curtains is characterized by: It comprises an L-shaped bottom plate (23) and an L-shaped upper cover (24), wherein the long side of the L-shaped bottom plate (23) is parallel to the guide rail body (11), and the short side is perpendicular to the guide rail body (11); The long side of the L-shaped bottom plate (23) is used to install the opening and closing motor (211), and the short side of the L-shaped bottom plate (23) is used to install the dimming motor (221) and the dimming transmission wheel set; The upper cover (24) is buckled onto the upper portion of the bottom plate (23); a mounting groove (241) is provided on the upper cover (24) above the dimming motor (221); the mounting groove (241) is used to mount an opening and closing transmission wheel assembly; It also includes an installation positioning box (25) connected to the guide rail body (11), wherein the installation positioning box (25) is clamped on the upper cover (24) to enable the opening and closing transmission wheel set to dock with the active pulley (121), and to enable the dimming transmission wheel set to drive the transmission rod (13) to rotate; The installation slot (241) is provided with a first opening (2401) on one side facing the installation positioning box (25), and the installation positioning box (25) is provided with a first transmission opening (2501) on one side. When the installation positioning box (25) is clamped on the upper cover (24), the first opening (2401) is opposite to the first transmission opening (2501).

2. The transmission box for electric curtains according to claim 1, characterized in that: A second opening (2402) is provided on one side of the upper cover (24) facing the installation positioning box (25), and a second transmission port (2502) is provided on one side of the installation positioning box (25). When the installation positioning box (25) is clamped on the upper cover (24), the second opening (2402) and the second transmission port (2502) are opposite to each other.

3. The transmission box for electric curtains according to claim 2, characterized in that: The first opening (2401) is located on the upper side of the second opening (2402).

4. The transmission box for electric curtains according to any one of claims 1 to 3, characterized in that: The opening and closing transmission gear set includes a gear set and two second bevel gears meshing with each other, namely a second bevel gear 1 (213) and a second bevel gear 2 (214); the gear set includes three transmission gears, namely an input gear (215), an intermediate gear (216) and an output gear (217); wherein the input gear (215) is close to one end of the opening and closing motor assembly and is coaxially arranged with the second bevel gear 2 (214); the second bevel gear 1 (213) is connected to the output end of the opening and closing motor (211); the intermediate gear (216) is located in the installation slot (241) and meshes with the input gear (215) and the output gear (217); and the output gear (217) is located in the installation positioning box (25) and is coaxially installed with the driving pulley (121).

5. The transmission box for electric curtains according to claim 4, characterized in that: The dimming transmission gear set includes two mutually meshing first bevel gears, namely the first bevel gear one (223) and the first bevel gear two (224), the angle between the axes of the first bevel gear one (223) and the first bevel gear two (224) is 90 degrees, wherein the first bevel gear one (223) is coaxially connected to the output end of the dimming motor (221), and the indexing cone angles of the first bevel gear one (223) and the first bevel gear two (224) are both 45 degrees.

6. The transmission box for electric curtains according to claim 5, characterized in that: The mounting and positioning box (25) is provided with a first mounting structure (251) for mounting the first bevel gear 2 (224) on the dimming transmission gear set, and a second mounting structure (252) for mounting the output gear (217) on the opening and closing transmission gear set. The first mounting structure (251) includes a supporting portion for supporting the rotating shaft of the first bevel gear 2 (224) and a through hole portion adapted to the connecting sleeve (225) of the transmission rod (13). The second mounting structure (252) includes a supporting shaft portion for mounting the driving pulley (121) and the rotating shaft of the output gear (217).

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