Sunshade structure with air flow guiding function under passive control

Abstract

The application discloses a passive control sunshade structure with air flow guiding function, and relates to the technical field of sunshade and heat dissipation. The sunshade structure comprises a frame, a plurality of blades arranged in the frame, a heat dissipation channel formed between each two adjacent blades, a transmission assembly arranged in the frame, and a heat-driven assembly arranged on the frame. The blades in the frame shield sunlight, the heat dissipation channel between the adjacent blades increases the heat dissipation effect of the sunshade structure, the heat accumulated between the sunshade structure and the sheltered object can be quickly discharged, when the air temperature rises to a specified temperature, the heat-driven assembly drives the plurality of blades to rotate synchronously through the transmission assembly, so that the blades are adjusted to the optimal sunshade angle, the rotation adjustment of the blades is driven by the sunlight irradiation temperature, and thus the problem of poor heat dissipation effect of the sunshade structure is solved without using external energy.

Description

Technical Field

[0001] This application relates to the field of sunshade and heat dissipation technology, and in particular to a passively controlled sunshade structure with airflow guiding function. Background Technology

[0002] Sunshade structures are widely used in server racks, electrical cabinets, energy storage cabinets, and other similar applications. Their main function is to block direct sunlight, reduce the surface temperature of the covered object and the ambient temperature, and prevent the covered object from aging, being damaged, or experiencing performance degradation due to prolonged exposure to sunlight. Currently, common sunshade structures mainly include solid sunshades, fixed louvers, or adjustable louvers.

[0003] Solid sunshades and fixed louvers are fixed installations that cannot adapt to changes in sunlight, making it difficult to balance shading and heat dissipation needs. While adjustable louver structures can change the shading angle, most are not optimized for hot air flow, making it difficult to quickly dissipate heat accumulated between the shading structure and the shaded object. Furthermore, adjustable louver structures rely on external power to drive their rotation. First, in remote areas or temporary outdoor structures without power access, a stable and reliable power supply is difficult to provide, rendering electrically adjustable sunshades unusable. Second, even with power available, the introduction of motors, sensors, controllers, and associated wiring significantly increases system cost and maintenance complexity.

[0004] Therefore, there is an urgent need to provide a shading structure that does not rely on external energy, is simple and reliable in structure, and has airflow guiding function, so as to meet the needs of dynamic shading and efficient heat dissipation in scenarios with no power or limited power supply. Summary of the Invention

[0005] To address the issues of poor heat dissipation and reliance on external energy in shading structures, this application provides a passively controlled shading structure with airflow guidance function.

[0006] The passively controlled shading structure with airflow guiding function provided in this application adopts the following technical solution: A passively controlled shading structure with airflow guidance function includes a frame. Multiple blades are evenly spaced along the length of the frame. The middle of each blade is rotatably connected to the frame via a pivot. A heat dissipation channel is formed between each pair of adjacent blades. A transmission component is provided within the frame and is driven by the pivot of the multiple blades. A thermal drive component is provided on the frame and is connected to the transmission component. When the thermal drive component reaches a specified temperature, it drives the multiple blades to rotate synchronously through the transmission component.

[0007] By adopting the above technical solution, the blades within the frame block sunlight, and the heat dissipation channels between adjacent blades increase the heat dissipation effect of the shading structure, allowing the heat accumulated between the shading structure and the shaded object to be quickly dissipated. When the temperature rises to a specified temperature, the heat drive component drives multiple blades to rotate synchronously through the transmission component, so that the blades are adjusted to the optimal shading angle. The rotation adjustment of the blades is driven by the temperature of sunlight, without the need for external energy, thus improving the problem of poor heat dissipation of the shading structure and eliminating the need for external energy.

[0008] Preferably, the thermal drive assembly includes a drive cylinder, a first piston, a thermal expansion medium, and a drive rod. The drive cylinder is mounted on a frame, the thermal expansion medium is stored inside the drive cylinder, the first piston is slidably mounted inside the drive cylinder, the drive rod is fixedly mounted on the first piston and slidably passes through the drive cylinder, and the drive rod is connected to a transmission assembly.

[0009] By adopting the above technical solution, when the temperature rises to the specified temperature, the thermal expansion medium changes from solid to liquid and expands in volume. The thermal expansion medium pushes the first piston to move, the first piston pushes the drive rod to move, and the drive rod then drives multiple blades to rotate synchronously and adjust through the transmission assembly.

[0010] Preferably, a limiting plate is provided inside the frame, the drive rod slides through the limiting plate, a push block is fixedly provided on the drive rod, and a first elastic element is sleeved on the drive rod, with the two ends of the first elastic element abutting against the push block and the limiting plate respectively.

[0011] By adopting the above technical solution, when the temperature rises, the thermal expansion medium pushes the drive rod to move through the first piston. The drive rod drives the blades to rotate through the transmission assembly. At the same time, the drive rod drives the push block to move. The push block moves and squeezes the first elastic element. The first elastic element contracts and deforms and stores elastic potential energy. When the temperature drops and the volume of the thermal expansion medium shrinks, the first elastic element releases elastic potential energy and pushes the drive rod to move and reset through the push block. The drive rod then drives multiple blades to rotate and reset through the transmission assembly.

[0012] Preferably, there are multiple drive rods, which are arranged at equal intervals along the circumference of the first piston, and multiple first elastic elements are provided, which are respectively sleeved on the multiple drive rods.

[0013] By adopting the above technical solution, multiple drive rods are evenly distributed along the circumference of the first piston, making the transmission of the driving force of the first piston by the drive rods more stable. In addition, multiple first elastic elements are sleeved on multiple drive rods, making the reset of the drive rods more stable.

[0014] Preferably, a drive motor is fixedly installed inside the frame, and a lead screw is rotatably installed at the drive end of the drive motor. The end of the lead screw away from the drive motor is rotatably connected to the drive cylinder, and a limiting plate is threaded through the lead screw.

[0015] By adopting the above technical solution, the drive motor drives the lead screw to rotate, and the lead screw drives the limiting plate to move on the drive rod. After the limiting plate moves, it squeezes the first elastic element, changing the elastic force of the first elastic element, so that the reset time of the first elastic element driving the drive rod can be adjusted.

[0016] Preferably, the drive cylinder is provided with multiple buffer cylinders, and a second piston is slidably disposed at the open end of the buffer cylinder. A moving rod is disposed on the side wall of the second piston near the inner cavity of the buffer cylinder. A second elastic element is disposed on the moving rod for pushing the second piston to move and reset. The elastic force of the first elastic element is greater than the elastic force of the second elastic element. Multiple limiting rods are fixedly disposed on the limiting plate. The multiple limiting rods pass through the drive cylinder and extend into the buffer cylinder. The ends of the multiple moving rods away from the second piston respectively abut against the multiple limiting rods. Each limiting rod is provided with an oblong hole, and the length of the oblong hole on the multiple limiting rods gradually increases.

[0017] By adopting the above technical solution, when the external maximum temperature is low, the driving component moves the limiting plate away from the first piston. The limiting plate then moves multiple limiting rods, which abut against the limiting rods, preventing the second pistons from moving. The lower maximum temperature melts only a small portion of the thermal expansion medium, and the melted portion pushes the first piston, causing the blades to rotate and adjust. When the external maximum temperature is high, the driving component moves the limiting plate closer to the first piston, increasing the elastic force of the first elastic element. The limiting plate then moves multiple limiting rods, with some moving rods abutting against the limiting rods and others moving within the oblong hole, allowing some of the second pistons to move. The higher maximum temperature melts most of the thermal expansion medium, which first pushes the second pistons, allowing the expansion medium to enter the buffer chamber, and then pushes the first piston, causing the blades to rotate and adjust. This configuration makes the thermal drive assembly suitable for blade angle adjustment under different temperature conditions.

[0018] Preferably, the movable rod includes a sleeve, a rod body, and a third elastic element. The sleeve is fixedly mounted on the second piston, the rod body is slidably mounted inside the sleeve, and the third elastic element is mounted inside the sleeve and abuts against the rod body. The elastic force of the third elastic element is greater than the elastic force of the first elastic element.

[0019] By adopting the above technical solution, when the thermal expansion medium melts and expands, it pushes the first piston to move to the designated position and causes the blade to rotate. When the thermal expansion medium continues to melt, the melted and expanded thermal expansion medium can push the second piston to move. At this time, the rod abuts against the limiting rod or the bottom wall of the buffer cylinder. The second piston drives the sleeve to move on the rod and squeezes the third elastic element, thereby relieving the pressure of the excessively melted thermal expansion medium.

[0020] Preferably, the transmission assembly includes a drive rack, multiple drive gears, a first drive wheel, a timing belt, and a second drive wheel. The drive rack is slidably disposed within the frame and is connected to a thermal drive assembly. The multiple first drive wheels are rotatably disposed within the frame. The multiple drive gears are fixedly disposed on the multiple first drive wheels and mesh with the drive rack. The multiple second drive wheels are disposed on the rotating shaft of the multiple blades. The timing belt is sleeved on the first drive wheel and the second drive wheel.

[0021] By adopting the above technical solution, the thermal drive component drives the drive gear to move, the moving rack drives multiple first drive wheels to rotate synchronously through the drive gear, the first drive wheels drive the second drive wheels to rotate through the synchronous belt, and the multiple second drive wheels drive the blades to rotate through the rotating shaft, so that multiple blades can rotate synchronously for adjustment.

[0022] Preferably, a movable block is fixedly provided on the drive rack, and two stops are fixedly provided at intervals within the frame. The movable block is located between the two stops, and the movable block moves to abut against the stops.

[0023] By adopting the above technical solution, when the drive rack drives the blade to rotate, it will drive the moving block to move. When the moving block moves to abut against the stop block, the drive rack stops moving. The two stop blocks limit the movement stroke of the drive rack, thereby limiting the rotation angle of the blade.

[0024] Preferably, the drive cylinder includes a heat-insulating cylinder body and a heat-absorbing cylinder cover, the heat-insulating cylinder body being disposed within a frame, and the heat-absorbing cylinder cover being disposed at the top of the heat-insulating cylinder body.

[0025] By adopting the above technical solution, sunlight shines on the heat-absorbing cylinder head, and the heat-absorbing cylinder head transfers heat from top to bottom to the thermal expansion medium, causing the solid thermal expansion medium to gradually melt into a liquid state from top to bottom.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Using a heat-driven component and a transmission component, the blades within the frame block sunlight. The heat dissipation channels between adjacent blades increase the heat dissipation effect of the shading structure, allowing the heat accumulated between the shading structure and the shaded object to be quickly dissipated. When the temperature rises to a specified temperature, the heat-driven component drives multiple blades to rotate synchronously through the transmission component, adjusting the blades to the optimal shading angle. The rotation adjustment of the blades is driven by the temperature of sunlight, eliminating the need for external energy, thus improving the problem of poor heat dissipation of the shading structure and eliminating the need for external energy. 2. With the help of the limiting plate and the first elastic element, when the temperature rises, the thermal expansion medium pushes the drive rod to move through the first piston. The drive rod drives the push block to move. The push block moves and squeezes the first elastic element. The first elastic element contracts and deforms and stores elastic potential energy. When the temperature drops and the volume of the thermal expansion medium shrinks, the first elastic element releases elastic potential energy and pushes the drive rod to move and reset through the push block. The drive rod then drives multiple blades to rotate and reset through the transmission assembly. 3. Through the buffer cylinder, when the outside maximum temperature is low, the driving component moves the limiting plate away from the first piston. The limiting plate moves multiple limiting rods, which then abut against the limiting rods, preventing the second pistons from moving. The low maximum temperature melts only a small portion of the thermal expansion medium, which pushes the first piston to move, thus adjusting the blade rotation. When the outside maximum temperature is high, the driving component moves the limiting plate closer to the first piston, increasing the elastic force of the first elastic element. The limiting plate moves multiple limiting rods, with some moving rods abutting against the limiting rods and others moving within the oblong hole, allowing some of the second pistons to move. The higher maximum temperature melts most of the thermal expansion medium, which first pushes the second pistons to move, allowing the expansion medium to enter the buffer chamber, and then pushes the first piston to move, adjusting the blade rotation. This allows the thermal drive assembly to be suitable for blade angle adjustment under different temperature conditions. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the sunshade structure in this application; Figure 2 This is an exploded sectional view of the overall structure of the sunshade structure in this application; Figure 3 For this application Figure 2 Enlarged view of point A in the middle; Figure 4 This is a partial structural cross-sectional view of the sunshade structure of this application; Figure 5 This is a partial structural cross-sectional view of the sunshade structure of this application, to highlight the limiting plate; Figure 6 This is a partial structural cross-sectional view of the sunshade structure of this application, to highlight the buffer tank; Figure 7 For this application Figure 6 Enlarged view of point B in the middle; Figure 8 This is a partial structural cross-sectional view of the sunshade structure of this application, to highlight the limiting plate; Figure 9 This is a front view of the overall structure of the sunshade structure of this application, to highlight the initial state of the blades; Figure 10 This is a front view of the overall structure of the shading structure of this application, to highlight the state of the blades after adjustment.

[0028] Reference numerals: 1. Frame; 2. Blade; 3. Shaft; 4. Heat dissipation channel; 5. Transmission assembly; 51. Drive rack; 52. Drive gear; 53. First drive wheel; 54. Synchronous belt; 55. Second drive wheel; 6. Thermal drive assembly; 61. Drive cylinder; 611. Heat-insulating cylinder body; 612. Heat-absorbing cylinder head; 62. First piston; 63. Thermal expansion medium; 64. Drive rod; 7. Limiting plate; 8. Push block; 9. 10. First elastic element; 11. Drive motor; 12. Lead screw; 13. Buffer cylinder; 14. Second piston; 15. Moving rod; 16. Sleeve; 17. Rod body; 18. Third elastic element; 19. Second elastic element; 20. Limiting rod; 11. Waist-shaped hole; 21. Moving block; 22. Stop block; 23. Connecting plate; 24. First cavity; 25. Second cavity; 26. Mounting bracket; 27. Cylinder barrel; 28. Support. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-10 This application will be described in further detail.

[0030] This application discloses a passively controlled shading structure with airflow guiding function.

[0031] Reference Figure 1 A passively controlled shading structure with airflow guidance function includes a rectangular frame 1, which is mounted above the object to be shaded via a support structure. A rotating shaft 3 is rotatably mounted within the frame 1 along its width. Multiple rotating shafts 3 are evenly spaced along the length of the frame 1, and each rotating shaft 3 has a blade 2 fixedly mounted on it. The blades 2 are installed at an angle, and a heat dissipation channel 4 is formed between each pair of adjacent blades 2. The surface of the blades 2 is coated with a reflective layer or a heat insulation layer, and the blades 2 are streamlined in shape.

[0032] Reference Figure 2 and Figure 3A first cavity 21 is formed within the frame 1. A transmission assembly 5 is installed within the first cavity 21. The transmission assembly 5 includes a drive rack 51, multiple drive gears 52, a first drive wheel 53, a timing belt 54, and a second drive wheel 55. The multiple second drive wheels 55 are respectively fixedly installed at the ends of multiple rotating shafts 3. The multiple first drive wheels 53 are rotatably installed within the frame 1 and are respectively located above the multiple second drive wheels 55. Each timing belt 54 is rotatably sleeved on one first drive wheel 53 and one second drive wheel 55 in the vertical direction.

[0033] Multiple drive gears 52 are coaxially fixedly mounted on multiple first drive wheels 53. A drive rack 51 is slidably mounted in the frame 1 in the horizontal direction, and the multiple drive gears 52 mesh with the bottom of the drive rack 51. When the drive rack 51 translates, the drive rack 51 drives the first drive wheels 53 to rotate through the multiple drive gears 52. The first drive wheels 53 then drive the second drive wheels 55 to rotate through the synchronous belt 54. The second drive wheels 55 then drive the blades 2 to rotate through the rotating shaft 3, thereby driving multiple blades 2 to rotate synchronously.

[0034] A movable block 18 is fixedly installed on the top wall of the drive rack 51. Two stop blocks 19 are fixedly installed above the drive rack 51 inside the frame 1. The two stop blocks 19 are located on opposite sides of the movable block 18, and the movable block 18 moves to abut against the stop blocks 19. When the drive rack 51 translates, it will drive the movable block 18 to move synchronously. The two limit blocks limit the movement stroke of the drive rack 51 by abutting against the movable block 18, thereby limiting the rotation angle of the blade 2.

[0035] Reference Figure 4 and Figure 5 A heat-driven assembly 6 is mounted on the frame 1. The driving end of the heat-driven assembly 6 is connected to the driving rack 51 and is used to drive the driving rack 51 to move. The drive assembly includes a drive cylinder 61, a first piston 62, a thermal expansion medium 63, and four drive rods 64. The drive cylinder 61 consists of a heat-insulating cylinder body 611 and a heat-absorbing cylinder cover 612. The heat-insulating cylinder body 611 has an open top and is fixedly mounted on the top of the frame 1. The heat-absorbing cylinder cover 612 is detachably fixedly mounted on the open end of the heat-insulating cylinder body 611 by bolts.

[0036] The thermal expansion medium 63 is stored in the drive cylinder 61. In this application, the thermal expansion medium 63 can be selected as temperature-sensitive wax. When the temperature of the thermal expansion medium 63 is higher than the specified temperature, it will melt. When the thermal expansion medium 63 melts from solid to liquid, its volume will expand. As the external temperature continues to rise, the thermal expansion medium 63 will gradually melt from top to bottom. Similarly, when the temperature of the thermal expansion medium 63 is lower than the specified temperature, it will solidify. When the thermal expansion medium 63 solidifies from liquid to solid, its volume will shrink.

[0037] A cylinder barrel 24 is fixedly installed inside the drive cylinder 61. The first piston 62 is slidably installed inside the cylinder barrel 24 of the drive cylinder 61. Four drive rods 64 are fixedly installed on the side wall of the first piston 62 and slide out of the drive cylinder 61. A connecting plate 20 is fixedly installed at the end of the four drive rods 64 away from the first piston 62. The connecting plate 20 is fixedly connected to the end of the drive rack 51.

[0038] Each drive rod 64 has a push block 8 fixedly installed at one end outside the drive cylinder 61, and a first elastic element 9 is sleeved on the other end of each drive rod 64 outside the drive cylinder 61. In this application, the first elastic element 9 can be a spring, and one end of the first elastic element 9 abuts against the push block 8.

[0039] Limiting plates 7 are slidably mounted on the four drive rods 64, and the ends of the four first elastic elements 9 away from the push block 8 abut against the limiting plates 7. A drive motor 10 is fixedly mounted inside the frame 1 by a mounting bracket 23. A lead screw 11 is fixedly mounted on the drive end of the drive motor 10. The end of the lead screw 11 away from the drive motor 10 is rotatably connected to the outer wall of the drive cylinder 61, and the lead screw 11 is threaded through the middle of the limiting plate 7.

[0040] When the temperature rises and exceeds the specified temperature, the thermal expansion medium 63 undergoes a solid-liquid phase change, expanding in volume and thus pushing the first piston 62 to move. The first piston 62 pushes the drive rod 64 to move, and the drive rod 64 drives the push block 8 to move synchronously. During the movement, the push block 8 compresses the first elastic element 9, causing the first elastic element 9 to undergo elastic deformation and store elastic potential energy. At the same time, the drive rod 64 drives the drive rack 51 to move through the connecting disc 20, thereby driving multiple blades 2 to rotate synchronously. When the temperature drops and falls below the specified temperature, the thermal expansion medium 63 undergoes a liquid-solid phase change, shrinking in volume. The first elastic element 9 releases the stored elastic potential energy, pushing the push block 8 to move in the opposite direction. The push block 8 then drives the drive rod 64 to reset, and the drive rod 64 drives the first piston 62 to move and reset. The drive rod 64 also drives multiple blades 2 to rotate in the opposite direction to their initial positions through the transmission assembly 5.

[0041] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 Two buffer cylinders 12 are fixedly installed side by side inside the drive cylinder 61. One end of each buffer cylinder 12 is open, and a second piston 13 is slidably installed inside the open end of each buffer cylinder 12. A moving rod 14 is fixedly installed on the middle of the side wall of the second piston 13 near the inner cavity of the buffer cylinder 12. A second elastic element 15 is installed inside the buffer cylinder 12 and is sleeved on the moving rod 14. In this application, the second elastic element 15 can be a spring. The end of the second elastic element 15 abuts against the second piston 13, and the elastic force of the second elastic element 15 is less than the elastic force of the first elastic element 9.

[0042] Two limiting rods 16 are fixedly installed on the side wall of the limiting plate 7 by a bracket 25. Multiple limiting rods 16 pass through the drive cylinder 61 and slide into multiple buffer cylinders 12 respectively. The end of the moving rod 14 away from the second piston 13 moves to abut against the limiting rod 16, thereby restricting the movement of the second piston 13. Each moving rod 14 has an oblong hole 17 along its own length direction, and the length of the oblong hole 17 on the two moving rods 14 gradually increases.

[0043] When the outside temperature is low, the driving component moves the limiting plate 7 away from the first piston 62. The limiting plate 7 drives multiple limiting rods 16 to move synchronously, so that the multiple limiting rods 16 respectively form abutment and limit with the corresponding moving rods 14. At this time, the multiple second pistons 13 are locked and cannot move. Due to the low temperature, only a small part of the thermal expansion medium 63 at the top melts, and its volume expansion is small. This part of the expansion medium directly pushes the first piston 62 to move, so that the blade 2 produces a corresponding angular displacement adjustment.

[0044] When the outside temperature is high, the driving component moves the limiting plate 7 towards the first piston 62. The limiting plate 7 drives multiple limiting rods 16 to move synchronously. At this time, some of the moving rods 14 remain in contact with the limiting rods 16, while the limiting rods 16 corresponding to other moving rods 14 fall into the oblong hole 17 to form a clearance gap, allowing the corresponding second piston 13 to have freedom of movement. Due to the high temperature, most of the thermal expansion medium 63 melts and generates a large volume expansion. This thermal expansion medium 63 first pushes the movable second piston 13 to move, causing some of the thermal expansion medium 63 to enter the buffer chamber. Subsequently, the remaining thermal expansion medium 63 pushes the first piston 62 to move, thereby driving the blade 2 to rotate and adjust.

[0045] Through the above settings, the thermal drive component 6 can switch the locking and releasing states of the second piston 13 according to the melting degree of the thermal expansion medium 63 under different external temperature conditions, and adjust the diversion path of the expansion medium to the buffer chamber, so that the shading structure can achieve an adaptive blade 2 angle adjustment response under different temperature environments (see reference). Figure 9 and Figure 10 ).

[0046] The movable rod 14 includes a sleeve 141, a rod body 142, and a third elastic element 143. The sleeve 141 is fixedly connected to the second piston 13. The rod body 142 is slidably mounted on the end of the sleeve 141 away from the second piston 13. The third elastic element 143 is installed inside the sleeve 141. The end of the rod body 142 away from the second piston 13 abuts against the limiting rod 16 and can slide into the oblong hole 17. In this application, the third elastic element 143 can be selected as a spring. The end of the third elastic element 143 abuts against the rod body 142, and the elastic force of the third elastic element 143 is greater than the elastic force of the first elastic element 9.

[0047] When the thermal expansion medium 63 melts and expands upon heating, it first pushes the first piston 62 to move until the blade 2 rotates to a preset limit position. Subsequently, if the thermal expansion medium 63 continues to melt and its volume further increases, the excess expansion will push the second piston 13 to move. During the movement of the second piston 13, the rod 142 connected to it abuts against the limiting rod 16 or the bottom wall of the buffer cylinder 12, thereby restricting the direct translation of the second piston 13. At this time, the second piston 13 drives the sleeve 141 to slide relative to the rod 142, compressing the third elastic element 143, converting the excess volume expansion of the thermal expansion medium 63 into the elastic potential energy of the third elastic element 143 for storage, thereby achieving pressure relief protection for the drive cylinder 61.

[0048] The implementation principle of a passively controlled shading structure with airflow guidance function in this application embodiment is as follows: Multiple blades 2 within the frame 1 effectively block sunlight, and the gaps between adjacent blades 2 form a heat dissipation channel 4. The heat dissipation channel 4 guides hot airflow through, improving the heat dissipation efficiency of the shading structure and allowing the hot air accumulated between the shading structure and the object below to be quickly discharged, preventing heat retention. When the temperature rises and exceeds a specified temperature, the thermal expansion medium 63 undergoes a solid-liquid phase change, expanding in volume, thereby pushing the first piston 62 to move. The first piston 62 pushes the drive rod 64 to move, and the drive rod 64 drives the drive rack 51 to move through the connecting disc 20. The drive rack 51 drives the first drive wheel 53 to rotate through multiple drive gears 52. The first drive wheel 53 then drives the second drive wheel 55 to rotate through the synchronous belt 54. The second drive wheel 55 then drives the blades 2 to rotate through the rotating shaft 3, thereby driving multiple blades 2 to rotate synchronously, allowing the blades 2 to adjust to the optimal shading angle. The rotation adjustment of the blades 2 is driven by the temperature of sunlight, thus eliminating the need for external energy.

[0049] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A passively controlled shading structure with airflow guiding function, characterized in that: The system includes a frame (1), in which multiple blades (2) are arranged at equal intervals along their length. The middle part of each blade (2) is rotatably connected to the frame (1) via a rotating shaft (3). A heat dissipation channel (4) is formed between each pair of adjacent blades (2). A transmission assembly (5) is provided inside the frame (1), and the transmission assembly (5) is connected to the rotating shaft (3) of the multiple blades (2). A heat drive assembly (6) is provided on the frame (1), and the heat drive assembly (6) is connected to the transmission assembly (5). When the heat drive assembly (6) reaches a specified temperature, the heat drive assembly (6) drives the multiple blades (2) to rotate synchronously through the transmission assembly (5).

2. A passively controlled shading structure with airflow guiding function according to claim 1, characterized in that: The thermal drive assembly (6) includes a drive cylinder (61), a first piston (62), a thermal expansion medium (63), and a drive rod (64). The drive cylinder (61) is mounted on the frame (1), the thermal expansion medium (63) is stored inside the drive cylinder (61), the first piston (62) is slidably mounted inside the drive cylinder (61), and the drive rod (64) is fixedly mounted on the first piston (62) and slidably passes through the drive cylinder (61). The drive rod (64) is connected to the transmission assembly (5).

3. A passively controlled shading structure with airflow guiding function according to claim 2, characterized in that: A limiting plate (7) is provided inside the frame (1). The drive rod (64) slides through the limiting plate (7). A push block (8) is fixedly provided on the drive rod (64). A first elastic element (9) is sleeved on the drive rod (64). The two ends of the first elastic element (9) abut against the push block (8) and the limiting plate (7) respectively.

4. A passively controlled shading structure with airflow guiding function according to claim 3, characterized in that: Multiple drive rods (64) are provided, and the multiple drive rods (64) are arranged at equal intervals along the circumference of the first piston (62). Multiple first elastic elements (9) are provided, and the multiple first elastic elements (9) are respectively sleeved on the multiple drive rods (64).

5. A passively controlled shading structure with airflow guiding function according to claim 3, characterized in that: A drive motor (10) is fixedly installed inside the frame (1). A lead screw (11) is rotatably installed at the drive end of the drive motor (10). The end of the lead screw (11) away from the drive motor (10) is rotatably connected to the drive cylinder (61), and a limiting plate (7) is threaded through the lead screw (11).

6. A passively controlled shading structure with airflow guiding function according to claim 5, characterized in that: The drive cylinder (61) is provided with multiple buffer cylinders (12). A second piston (13) is slidably provided at the open end of the buffer cylinder (12). A moving rod (14) is provided on the side wall of the second piston (13) near the inner cavity of the buffer cylinder (12). A second elastic element (15) is provided on the moving rod (14) for pushing the second piston (13) to move and reset. The elastic force of the first elastic element (9) is greater than the elastic force of the second elastic element (15). Multiple limiting rods (16) are fixedly provided on the limiting plate (7). The multiple limiting rods (16) pass through the drive cylinder (61) and extend into the buffer cylinder (12). The ends of the multiple moving rods (14) away from the second piston (13) respectively abut against the multiple limiting rods (16). Each limiting rod (16) is provided with a waist-shaped hole (17). The length of the waist-shaped hole (17) on the multiple limiting rods (16) gradually increases.

7. A passively controlled shading structure with airflow guiding function according to claim 6, characterized in that: The movable rod (14) includes a sleeve (141), a rod body (142), and a third elastic element (143). The sleeve is fixedly mounted on the second piston (13). The rod body (142) is slidably mounted inside the sleeve (141). The third elastic element (143) is mounted inside the sleeve (141) and abuts against the rod body (142). The elastic force of the third elastic element (143) is greater than the elastic force of the first elastic element (9).

8. A passively controlled shading structure with airflow guiding function according to claim 1, characterized in that: The transmission assembly (5) includes a drive rack (51), multiple drive gears (52), a first drive wheel (53), a timing belt (54), and a second drive wheel (55). The drive rack (51) is slidably disposed within the frame (1). The drive rack (51) is connected to the thermal drive assembly (6). The multiple first drive wheels (53) are rotatably disposed within the frame (1). The multiple drive gears (52) are fixedly disposed on the multiple first drive wheels (53) and mesh with the drive rack (51). The multiple second drive wheels (55) are disposed on the rotating shaft (3) of the multiple blades (2). The timing belt (54) is sleeved on the first drive wheel (53) and the second drive wheel (55).

9. A passively controlled shading structure with airflow guiding function according to claim 8, characterized in that: A movable block (18) is fixedly provided on the drive rack (51), and two stops (19) are fixedly provided at intervals in the frame (1). The movable block (18) is located between the two stops (19), and the movable block (18) moves to abut against the stops (19).

10. A passively controlled shading structure with airflow guiding function according to claim 2, characterized in that: The drive cylinder (61) includes a heat-insulating cylinder body (611) and a heat-absorbing cylinder cover (612). The heat-insulating cylinder body (611) is disposed inside the frame (1), and the heat-absorbing cylinder cover (612) is disposed at the top of the heat-insulating cylinder body (611).

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