Building energy-saving curtain wall with stable and safe structure

By using the sliding groove connection between the main frame and the sub-frame, the embedded adjustment mechanism, and the double sealing device, the shortcomings of curtain wall products in terms of energy-saving performance and structural stability are solved, achieving stable sealing and high-efficiency energy saving under extreme climatic conditions.

CN224281689UActive Publication Date: 2026-05-26SUZHOU SANYUAN SIDU DECORATION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU SANYUAN SIDU DECORATION CO LTD
Filing Date
2025-06-30
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing curtain wall products have shortcomings in terms of energy-saving performance and structural stability, especially in terms of reduced sealing performance, thermal expansion and contraction, and insufficient structural stability under extreme climatic conditions.

Method used

The main frame and the sub-frame are connected by sliding grooves, with an embedded adjustment mechanism and a double sealing device. Combined with the design of limit blocks, drainage grooves and buffer springs, dynamic sealing, stable guidance and water drainage are achieved.

Benefits of technology

It improves the overall structural stability and energy-saving performance of the curtain wall, ensures good sealing performance under extreme climatic conditions, extends service life and enhances operational comfort.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a building energy-saving curtain wall with a stable and safe structure, which relates to the technical field of building curtain walls and comprises an outer frame component, an embedded adjusting mechanism and a double-sealing device. The outer frame assembly is composed of a main frame and an auxiliary frame, the main frame and the auxiliary frame are connected through a sliding groove, and the sliding groove is formed in the length direction of the main frame. The embedded adjusting mechanism is installed in the main frame and is in linkage with the auxiliary frame through a threaded rod. And the double-sealing device is arranged at the joint part of the main frame and the auxiliary frame and is used for realizing dynamic sealing. According to the building energy-saving curtain wall with the stable and safe structure, through the sliding groove connection of the main frame and the auxiliary frame and the design of the embedded adjusting mechanism, the position of the auxiliary frame can be adjusted according to actual requirements, so that the building energy-saving curtain wall adapts to installation spaces of different sizes, and meanwhile the overall structural stability of the curtain wall is improved.
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Description

Technical Field

[0001] This utility model relates to the field of building curtain wall technology, specifically to a structurally stable and safe energy-saving building curtain wall. Background Technology

[0002] As an important component of modern architecture, building curtain walls are widely used in the design of various building facades. Their main functions include providing building envelope, thermal insulation, sound insulation, and aesthetic decoration. However, curtain walls still have some shortcomings in practical use, particularly in terms of energy efficiency and structural stability. For example, some curtain wall products fail to meet thermal insulation requirements under long-term use or extreme weather conditions, leading to increased energy consumption inside the building. Simultaneously, under wind loads, the curtain wall structure may vibrate or deform, affecting its safety and service life.

[0003] A search revealed a patent for an energy-saving curtain wall, CN112177211B, published on May 13, 2022. This design integrates the keel with the curtain wall body and utilizes baffles and rotating columns for rapid installation and sealing. However, this structure relies on torsion springs to drive the baffles' rotation. Over time, the springs are prone to fatigue and failure, leading to decreased sealing performance and consequently affecting the overall airtightness and energy efficiency of the curtain wall. Furthermore, this design does not adequately consider the thermal expansion and contraction effects of the curtain wall under extreme weather conditions, potentially causing gaps between the curtain wall body and the keel, further reducing its energy-saving performance.

[0004] A search revealed a reverse-mounted curtain wall with patent number CN110700461B, published on April 8, 2025. This design combines exterior vertical frames with interior horizontal frames, achieving a visually striking effect of visible vertical and concealed horizontal frames. Load-bearing supports enhance the curtain wall panels' load-bearing capacity. While this design offers advantages in structural strength and aesthetics, its fixing method relies heavily on short indoor vertical connectors. Loosening of these connections directly impacts the overall stability of the curtain wall. Furthermore, the design does not address the thermal bridging effect, potentially leading to condensation in cold regions and affecting the comfort of the building's interior environment.

[0005] The aforementioned problems indicate that existing curtain wall products still have certain limitations in terms of energy-saving performance and structural stability, making it difficult to fully adapt to the needs of use in complex environments. Therefore, this utility model aims to provide a structurally stable and safe energy-saving curtain wall to overcome these shortcomings and meet the development needs of modern green buildings. Utility Model Content

[0006] This utility model provides a structurally stable and safe energy-saving curtain wall for buildings, aiming to address the shortcomings of existing curtain wall products in terms of energy-saving performance and structural stability. The specific solution is as follows:

[0007] A structurally stable and safe energy-saving curtain wall for buildings includes an outer frame assembly, an embedded adjustment mechanism, and a double sealing device. The outer frame assembly consists of a main frame and a sub-frame, which are connected by a sliding groove along the length of the main frame. The embedded adjustment mechanism is installed inside the main frame and is linked to the sub-frame via a threaded rod. The double sealing device is located at the junction of the main frame and the sub-frame to achieve dynamic sealing.

[0008] As a preferred embodiment of the energy-saving curtain wall with stable and safe structure described in this utility model, the main frame is provided with symmetrically arranged guide blocks on both sides, the guide blocks are used in conjunction with sliding grooves, and the top of the guide blocks is provided with a protrusion; the bottom of the sub-frame is provided with a groove corresponding to the protrusion, the groove and the protrusion form a snap-fit ​​relationship to restrict the lateral movement of the sub-frame on the main frame.

[0009] As a preferred embodiment of the structurally stable and safe energy-saving curtain wall of this utility model, the embedded adjustment mechanism includes an adjustment shaft and a drive handle connected thereto. The adjustment shaft passes through the main frame and engages with a threaded rod. One end of the threaded rod is fixedly connected to the sub-frame, and the other end is installed inside the main frame through a bearing. When the drive handle is rotated, the adjustment shaft drives the threaded rod to rotate, thereby pushing the sub-frame to move longitudinally along the sliding groove.

[0010] As a preferred embodiment of the structurally stable and safe energy-saving curtain wall of this utility model, the double sealing device includes a first sealing strip and a second sealing strip. The first sealing strip is fixed to the inner wall of the main frame, and the second sealing strip is fixed to the outer wall of the sub-frame. An elastic gasket is provided between the first sealing strip and the second sealing strip, and the two ends of the elastic gasket are respectively attached to the first sealing strip and the second sealing strip.

[0011] As a preferred embodiment of the structurally stable and safe energy-saving curtain wall of this utility model, the main frame is provided with ventilation holes at the top, and a removable filter screen is installed inside the ventilation holes; the ventilation holes are connected to a double sealing device to balance the air pressure difference between the main frame and the sub-frame.

[0012] As a preferred embodiment of the structurally stable and safe energy-saving curtain wall of this utility model, the sub-frame has multiple evenly distributed limiting blocks on its outer side wall, and the limiting blocks form a clearance fit with the inner side wall of the main frame; the top of the limiting block has an arc-shaped concave surface to reduce friction between the sub-frame and the main frame during movement.

[0013] As a preferred embodiment of the structurally stable and safe energy-saving curtain wall of this utility model, the main frame is provided with a drainage trough at its bottom, with the opening of the drainage trough facing outward; the drainage trough is connected to the sliding groove and is used to drain water that enters the main frame due to the external environment.

[0014] As a preferred embodiment of the structurally stable and safe energy-saving curtain wall of this utility model, wherein: a buffer spring is sleeved on the outer wall of the adjusting shaft, one end of the buffer spring is fixedly connected to the inner wall of the main frame, and the other end is fixedly connected to the flange of the adjusting shaft; the buffer spring is used to absorb the vibration generated by the adjusting shaft during rotation.

[0015] As a preferred embodiment of the structurally stable and safe energy-saving curtain wall of this utility model, the first sealing strip has a cavity inside, and the cross-section of the cavity is wavy; the two ends of the cavity are respectively connected to the joint of the main frame and the sub-frame, which is used to enhance the elastic deformation capability of the first sealing strip.

[0016] As a preferred embodiment of the energy-saving curtain wall with a stable and safe structure as described in this utility model, the end of the drive handle is provided with anti-slip texture, which is evenly distributed along the circumference of the drive handle; the surface of the anti-slip texture is provided with raised dots to increase the friction during operation.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] The curtain wall, through the sliding groove connection between the main frame and the sub-frame and the design of the embedded adjustment mechanism, can adjust the position of the sub-frame according to actual needs, thereby adapting to different sizes of installation space and improving the overall structural stability of the curtain wall.

[0019] This curtain wall, through its dual sealing device design, utilizes the cooperation of the first and second sealing strips, combined with the buffering effect of the elastic gasket, to maintain good sealing performance during long-term use or under extreme weather conditions, avoiding sealing failure caused by thermal expansion and contraction.

[0020] The curtain wall, through the gap fit design between the limiting block and the main frame, can provide a stable guiding effect during the movement of the sub-frame, while the arc concave surface reduces friction and extends the service life of the curtain wall.

[0021] The curtain wall, through its interconnected drainage channels and sliding channels, can effectively drain water from inside the main frame, preventing frame corrosion or sealing failure caused by water accumulation.

[0022] The curtain wall, through a combination of adjusting shaft and buffer spring design, can absorb vibration during the adjustment of the sub-frame position, ensuring the smoothness of the adjustment process and improving the comfort of operation.

[0023] The curtain wall enhances the elastic deformation capability of the sealing strip through the wave-shaped design of the internal cavity of the first sealing strip, enabling it to maintain a good sealing effect when facing different air pressure changes.

[0024] The curtain wall features an anti-slip textured design at the end of the drive handle, which enhances the feel and stability during operation, making it easier for users to precisely control the movement of the sub-frame.

[0025] In summary, this utility model, through a series of innovative structural designs and technical means, solves the shortcomings of existing curtain wall products in terms of energy-saving performance and structural stability, and provides a more efficient, energy-saving and environmentally adaptable solution for modern green buildings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0028] Figure 2 This is a longitudinal sectional view of the present invention.

[0029] Figure 3 for Figure 2 A magnified view of part A in the middle.

[0030] Figure 4 This is a cross-sectional view of the present invention.

[0031] Figure 5 This is a schematic diagram of the connection structure between the drainage channel and the sliding channel of this utility model.

[0032] The attached figures are labeled as follows:

[0033] 1. Main frame; 2. Sub-frame; 3. Sliding groove; 4. Guide block; 5. Protrusion; 6. Groove; 7. Adjusting shaft; 8. Drive handle; 9. Threaded rod; 10. First sealing strip; 11. Second sealing strip; 12. Elastic gasket; 13. Ventilation hole; 14. Filter screen; 15. Limiting block; 16. Arc-shaped concave surface; 17. Drainage groove; 18. Buffer spring; 19. Cavity; 20. Anti-slip texture. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0035] This utility model provides a structurally stable and safe energy-saving curtain wall for buildings, the specific implementation of which is described in conjunction with the appendix. Figure 1 To be continued Figure 5 Detailed explanation follows. The main frame 1 and the sub-frame 2 are connected and used in conjunction with a sliding groove 3. The sliding groove 3 is opened along the length of the main frame 1. Guide blocks 4 are provided on both sides of the main frame 1. The top of the guide block 4 is provided with a protrusion 5. The bottom of the sub-frame 2 is provided with a groove 6. The groove 6 and the protrusion 5 form a locking relationship to restrict the lateral movement of the sub-frame 2 on the main frame 1. The embedded adjustment mechanism includes an adjustment shaft 7, a drive handle 8, and a threaded rod 9. The adjustment shaft 7 passes through the main frame 1 and engages with the threaded rod 9. One end of the threaded rod 9 is fixedly connected to the sub-frame 2, and the other end is installed inside the main frame 1 through a bearing. When the drive handle 8 is rotated, the adjustment shaft 7 drives the threaded rod 9 to rotate, thereby pushing the sub-frame 2 to move longitudinally along the sliding groove 3. The double sealing device consists of a first sealing strip 10, a second sealing strip 11, and an elastic gasket 12. The first sealing strip 10 is fixed to the inner wall of the main frame 1, and the second sealing strip 11 is fixed to the outer wall of the sub-frame 2. The two ends of the elastic gasket 12 are respectively attached to the first sealing strip 10 and the second sealing strip 11. A ventilation hole 13 is provided at the top of the main frame 1. A removable filter screen 14 is installed inside the ventilation hole 13. The ventilation hole 13 is connected to the double sealing device and is used to balance the air pressure difference between the main frame 1 and the sub-frame 2.

[0036] A limiting block 15 is provided on the outer side wall of the sub-frame 2, forming a clearance fit with the inner side wall of the main frame 1. The top of the limiting block 15 is provided with an arc-shaped concave surface 16, which reduces the friction between the sub-frame 2 and the main frame 1 during movement. A drainage groove 17 is provided at the bottom of the main frame 1, with its opening facing outward. The drainage groove 17 is connected to the sliding groove 3 and is used to drain water that enters the main frame 1 due to the external environment. A buffer spring 18 is sleeved on the outer wall of the adjusting shaft 7. One end of the buffer spring 18 is fixedly connected to the inner wall of the main frame 1, and the other end is fixedly connected to the flange of the adjusting shaft 7. The buffer spring 18 absorbs the vibration generated by the adjusting shaft 7 during rotation. A cavity 19 is provided inside the first sealing strip 10. The cross-section of the cavity 19 is wavy, and both ends of the cavity 19 are connected to the joint of the main frame 1 and the sub-frame 2, respectively, to enhance the elastic deformation capability of the first sealing strip 10. The end of the drive handle 8 is provided with anti-slip texture 20, which is evenly distributed along the circumference of the drive handle 8. The surface of the anti-slip texture 20 is provided with tiny bumps to increase the friction during operation.

[0037] Combined with appendix Figure 1 To be continued Figure 5 The specific implementation methods of the above structure are described in detail. (Appendix) Figure 1 The diagram shows the overall structure. The main frame 1 and the sub-frame 2 are connected by a sliding groove 3. The guide block 4 and the protrusion 5 cooperate to limit the movement of the sub-frame 2. The positions of the adjusting shaft 7, drive handle 8, and threaded rod 9 in the embedded adjusting mechanism are clearly visible. (Attached) Figure 2 This is a longitudinal sectional view, highlighting the structural details of the sliding groove 3, guide block 4, and double sealing device. The cooperation between the sliding groove 3 and guide block 4 ensures the stable movement of the sub-frame 2 within the main frame 1. The arrangement of the first sealing strip 10, the second sealing strip 11, and the elastic gasket 12 in the double sealing device effectively achieves a dynamic sealing effect. (Attached) Figure 3 for Figure 2 The enlarged view of section A shows in detail the mating relationship between the first sealing strip 10, the second sealing strip 11, and the elastic gasket 12. The elastic gasket 12 is located between the first sealing strip 10 and the second sealing strip 11, serving as a buffer and enhancing the sealing performance. (Attached) Figure 4 This is a cross-sectional view showing the clearance fit between the limiting block 15 and the main frame 1, and the design of the arc-shaped concave surface 16. The clearance between the limiting block 15 and the inner wall of the main frame 1 ensures that the sub-frame 2 can maintain stable guidance during movement, while the arc-shaped concave surface 16 reduces friction. (Attached) Figure 5 This is a schematic diagram of the connection structure between the drainage channel 17 and the sliding channel 3, indicating the opening direction of the drainage channel 17 and its connection method with the sliding channel 3. The drainage channel 17 drains the water inside the main frame 1 to avoid water accumulation that could lead to frame corrosion or sealing failure.

[0038] In practical applications, the sliding groove 3 connecting the main frame 1 and the sub-frame 2, along with the embedded adjustment mechanism, allows for adjustment of the sub-frame 2's position according to actual needs. When adjusting the sub-frame 2's position, rotating the drive handle 8 causes the adjusting shaft 7 to rotate, which in turn drives the threaded rod 9. The threaded rod 9 pushes the sub-frame 2 longitudinally along the sliding groove 3. The cooperation between the guide block 4 and the protrusion 5 ensures the stability of the sub-frame 2 during movement. The double sealing device functions at the junction of the main frame 1 and the sub-frame 2. The first sealing strip 10 and the second sealing strip 11 achieve a dynamic sealing effect through the buffering effect of the elastic gasket 12. The elastic gasket 12 can adapt to dimensional changes caused by thermal expansion and contraction, thus maintaining good sealing performance. The ventilation hole 13 is connected to the double sealing device to balance the air pressure difference between the main frame 1 and the sub-frame 2, preventing sealing failure due to air pressure changes. The clearance fit design between the limiting block 15 and the inner wall of the main frame 1 provides stable guidance for the movement of the sub-frame 2. The arc-shaped concave surface 16 reduces friction between the sub-frame 2 and the main frame 1 during movement, extending the service life of the curtain wall. The drainage groove 17 is connected to the sliding groove 3, which can effectively drain the water inside the main frame 1, avoiding water accumulation that could lead to frame corrosion or seal failure. The buffer spring 18 is sleeved on the outer wall of the adjusting shaft 7, absorbing vibration during the adjustment of the sub-frame 2, ensuring smooth adjustment and improving operational comfort. The wave-shaped design of the cavity 19 inside the first sealing strip 10 enhances the elastic deformation capacity of the sealing strip, allowing it to maintain a good sealing effect even under different air pressure changes. The anti-slip texture 20 at the end of the drive handle 8 improves the feel and stability during operation, facilitating precise control of the sub-frame 2's movement.

[0039] As can be seen from the above specific embodiments, this utility model solves the shortcomings of existing curtain wall products in terms of energy-saving performance and structural stability through a series of innovative structural designs and technical means, providing a more efficient, energy-saving, and environmentally adaptable solution for modern green buildings. The connection relationships, positional relationships, and mutual cooperation relationships between the various components are fully disclosed, enabling those skilled in the art to implement the technology based on the contents of the specification.

[0040] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0041] When installing the energy-saving curtain wall, the main frame 1 is first fixed to a predetermined position on the building facade. The guide blocks 4 on both sides of the main frame 1 engage with the grooves 6 at the bottom of the sub-frame 2 via their top protrusions 5, thus restricting the lateral movement of the sub-frame 2 on the main frame 1. This design ensures that the sub-frame 2 will not deviate during subsequent adjustments and provides a stable guiding foundation for the sliding groove 3. Subsequently, rotating the drive handle 8 drives the adjusting shaft 7 to rotate, which engages with the threaded rod 9. The threaded rod 9 pushes the sub-frame 2 longitudinally along the sliding groove 3. During this process, the clearance fit between the limiting block 15 and the inner wall of the main frame 1 provides additional stability for the movement of the sub-frame 2, while the arc-shaped concave surface 16 effectively reduces friction during movement, ensuring smooth operation and reducing wear.

[0042] Once the sub-frame 2 is adjusted to the desired position, the double sealing device begins to function. The first sealing strip 10 and the second sealing strip 11 are respectively fixed to the inner wall of the main frame 1 and the outer wall of the sub-frame 2, and are connected by an elastic gasket 12. The elastic gasket 12 can automatically adjust its compression degree according to dimensional changes caused by thermal expansion and contraction, thereby maintaining good sealing performance at all times. In addition, the corrugated cavity 19 inside the first sealing strip 10 further enhances its elastic deformation capability, enabling it to maintain tight contact under different air pressure conditions and avoid sealing failure caused by changes in the external environment.

[0043] In actual use, the ventilation opening 13 is connected to a double sealing device to balance the air pressure difference between the main frame 1 and the sub-frame 2. When changes in external wind pressure or temperature cause air pressure fluctuations, the filter 14 inside the ventilation opening 13 filters the incoming air, ensuring clean airflow while preventing dust or other impurities from entering the curtain wall. This design not only improves the airtightness of the curtain wall but also extends its service life.

[0044] Meanwhile, the interconnected structure between the drainage channel 17 and the sliding channel 3 ensures that water accumulated inside the main frame 1 can be drained in a timely manner. When rainwater or condensate seeps into the main frame 1 from the external environment, the water flows along the sliding channel 3 to the drainage channel 17 and is discharged to the outside through the opening of the drainage channel 17, preventing water accumulation from corroding the frame or affecting the sealing performance. In addition, the buffer spring 18 sleeved on the outer wall of the adjusting shaft 7 absorbs vibration during rotation, making the adjustment process smoother and improving the comfort of operation.

[0045] During long-term use, the anti-slip texture 20 at the end of the drive handle 8 significantly improves the feel and stability during operation. Users can precisely control the rotation angle of the drive handle 8 to adjust the position of the sub-frame 2, thereby meeting the installation requirements in different scenarios. This design not only facilitates operation by on-site construction personnel but also improves adjustment accuracy, ensuring the stability and safety of the overall curtain wall structure.

[0046] In summary, this utility model, through the aforementioned steps and the synergistic effect between its components, achieves a comprehensive improvement in the energy-saving performance and structural stability of the building's energy-efficient curtain wall. The design of each component is focused on addressing the shortcomings of existing technologies, ensuring both the curtain wall's adaptability to complex environments and providing reliable protection for its long-term use. Those skilled in the art can accurately implement this technical solution based on the above description, thereby achieving the expected technical effects.

[0047] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A structurally stable and safe energy-saving building curtain wall, comprising an outer frame assembly, an embedded adjustment mechanism, and a double sealing device, characterized in that: The outer frame assembly includes a main frame (1) and a sub-frame (2). The main frame (1) and the sub-frame (2) are connected by a sliding groove (3), which is opened along the length of the main frame (1). The embedded adjustment mechanism includes an adjustment shaft (7), a drive handle (8), and a threaded rod (9). The adjustment shaft (7) passes through the main frame (1) and meshes with the threaded rod (9). One end of the threaded rod (9) is fixedly connected to the sub-frame (2), and the other end is installed inside the main frame (1) through a bearing. The double sealing device includes a first sealing strip (10), a second sealing strip (11), and an elastic gasket (12). The first sealing strip (10) is fixed on the inner side wall of the main frame (1), the second sealing strip (11) is fixed on the outer side wall of the sub-frame (2), and the two ends of the elastic gasket (12) are respectively attached to the first sealing strip (10) and the second sealing strip (11).

2. The structurally stable and safe energy-saving curtain wall for buildings according to claim 1, characterized in that, The main frame (1) has symmetrically arranged guide blocks (4) on both sides. The top of the guide block (4) has a protrusion (5), and the bottom of the sub-frame (2) has a groove (6) corresponding to the protrusion (5). The groove (6) and the protrusion (5) form a snap-fit ​​relationship.

3. The structurally stable and safe energy-saving curtain wall for buildings according to claim 1, characterized in that, The outer side wall of the sub-frame (2) is provided with a limiting block (15), which forms a clearance fit with the inner side wall of the main frame (1), and the top of the limiting block (15) is provided with an arc-shaped concave surface (16).

4. The structurally stable and safe energy-saving curtain wall for buildings according to claim 1, characterized in that, The top of the main frame (1) is provided with a ventilation hole (13), and a removable filter (14) is installed inside the ventilation hole (13). The ventilation hole (13) is connected to a double sealing device.

5. A structurally stable and safe energy-saving building curtain wall according to claim 1, characterized in that, The bottom of the main frame (1) is provided with a drainage groove (17), the opening of the drainage groove (17) faces outward, and the drainage groove (17) is connected to the sliding groove (3).

6. The structurally stable and safe energy-saving curtain wall for buildings according to claim 1, characterized in that, A buffer spring (18) is sleeved on the outer wall of the adjusting shaft (7). One end of the buffer spring (18) is fixedly connected to the inner wall of the main frame (1), and the other end is fixedly connected to the flange of the adjusting shaft (7).

7. A structurally stable and safe energy-saving building curtain wall according to claim 1, characterized in that, The first sealing strip (10) has a cavity (19) inside. The cross-section of the cavity (19) is wavy. The two ends of the cavity (19) are connected to the joint of the main frame (1) and the sub-frame (2), respectively.

8. A structurally stable and safe energy-saving building curtain wall according to claim 1, characterized in that, The end of the drive handle (8) is provided with anti-slip texture (20), which is evenly distributed along the circumference of the drive handle (8), and the surface of the anti-slip texture (20) is provided with raised dots.